CN113029391A - Battery temperature detection method and device, household appliance and storage medium - Google Patents
Battery temperature detection method and device, household appliance and storage medium Download PDFInfo
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Abstract
The application discloses battery temperature detection method, device, household appliance and storage medium, and the method comprises the following steps: controlling a temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency; acquiring at least one historical temperature value from a storage unit; determining temperature change information of the battery based on the current temperature value and at least one historical temperature value; when the temperature change information meets the preset adjusting condition, a second temperature detection frequency is obtained; the second temperature detection frequency is used as a new first temperature detection frequency. So, through the temperature variation information of battery in the control a period, adjust first temperature detection frequency according to temperature variation information is nimble, control temperature detecting element detects the battery temperature with a suitable detection time interval, avoids frequently detecting the problem that the temperature leads to MCU consumption increase, perhaps can't in time detect the problem that the battery temperature leads to the battery to damage unusually to extension battery power supply time and life-span.
Description
Technical Field
The present disclosure relates to battery protection technologies, and in particular, to a method and an apparatus for detecting a battery temperature, a household appliance, and a storage medium.
Background
Portable electronic devices are becoming more and more popular, and the requirements for safety and life of the batteries of the electronic devices are becoming higher and higher. In order to ensure the safety of the battery and prolong the service life of the battery, the current scheme is that a Micro Control Unit (MCU) on a battery mainboard continuously collects the temperature of the battery, and once the temperature of the battery pack is found to be high, a discharge switch is turned off to protect the battery. However, the power consumption of the MCU can be increased by this detection method, thereby shortening the power supply time of the battery and causing waste of electric energy.
Disclosure of Invention
In order to solve the technical problem, the application provides a battery temperature detection method, a battery temperature detection device, a household appliance and a storage medium.
The technical scheme of the application is realized as follows:
in a first aspect, a battery temperature detection method is provided, which includes:
controlling a temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
acquiring at least one historical temperature value of the battery from a storage unit;
determining temperature change information of the battery based on the current temperature value and the at least one historical temperature value;
when the temperature change information meets a preset adjusting condition, obtaining a second temperature detection frequency;
and taking the second temperature detection frequency as a new first temperature detection frequency.
In the foregoing solution, the temperature change information includes a temperature change trend, and the adjustment condition includes: the first condition includes that the temperature change trend is an ascending trend; the second condition includes the temperature trend being a downward trend.
In the foregoing solution, the temperature change information further includes a temperature change rate, and the adjustment condition includes: the first condition comprises that the temperature change trend is an ascending trend, and the temperature change rate is in a first temperature change rate range; the second condition includes that the temperature change trend is a downward trend, and the temperature change rate is in a second temperature change rate range.
In the above scheme, when the temperature change information satisfies the preset adjustment condition, a second temperature detection frequency is obtained, which includes: when the temperature change information meets the first condition, taking a first preset frequency corresponding to the preset first condition as the second temperature detection frequency; and when the temperature change information meets the second condition, taking a second preset frequency corresponding to the preset second condition as the second temperature detection frequency.
In the above scheme, the temperature detection interval time of the second temperature detection frequency is equal or unequal.
In the foregoing solution, the controlling the temperature detecting unit to detect the current temperature value of the battery according to the first temperature detecting frequency includes: when the processor is in a dormant state, controlling the processor to be switched from the dormant state to a working state according to the first temperature detection frequency so as to control the temperature detection unit to detect the current temperature value of the battery; the method further comprises the following steps: controlling the processor to switch to a sleep state after detecting a current temperature value of the battery.
In the above scheme, the method further comprises: and when the current temperature value meets the storage condition, storing the current temperature value into the storage unit as the historical temperature value at the latest moment, and deleting the historical temperature value at the farthest moment.
In the above scheme, the method further comprises: generating high-temperature alarm prompt information when the current temperature value is greater than a first temperature threshold value; or, the current temperature value is smaller than a second temperature threshold value, and low-temperature alarm prompt information is generated.
In a second aspect, a battery temperature detection method is provided, which includes: controlling a temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency; when the current temperature value meets a preset temperature value change range, acquiring a second temperature detection frequency corresponding to the temperature value change range; and taking the second temperature detection frequency as a new first temperature detection frequency.
In a third aspect, there is provided a battery temperature detection apparatus, comprising:
the first detection unit is used for controlling the temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
the first acquisition unit is used for acquiring at least one historical temperature value of the battery from the storage unit;
a determination unit for determining temperature change information of the battery based on the current temperature value and the at least one historical temperature value;
the determining unit is further configured to obtain a second temperature detection frequency when the temperature change information meets a preset adjustment condition; and taking the second temperature detection frequency as a new first temperature detection frequency.
In a fourth aspect, there is provided a battery temperature detection apparatus, the apparatus including:
the second detection unit is used for controlling the temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
the second acquisition unit is used for acquiring a second temperature detection frequency corresponding to the temperature value change range when the current temperature value meets the preset temperature value change range; and taking the second temperature detection frequency as a new first temperature detection frequency.
In a fifth aspect, there is provided a household appliance comprising: a processor and a memory configured to store a computer program capable of running on the processor,
wherein the processor is configured to perform the steps of the aforementioned method when running the computer program.
In a sixth aspect, a computer storage medium is provided, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the aforementioned method.
The application provides a battery temperature detection method, which comprises the following steps: controlling a temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency; acquiring at least one historical temperature value of the battery from a storage unit; determining temperature change information of the battery based on the current temperature value and at least one historical temperature value; when the temperature change information meets a preset adjusting condition, obtaining a second temperature detection frequency; and taking the second temperature detection frequency as a new first temperature detection frequency. So, through the temperature variation information of battery in the control a period, adjust first temperature detection frequency according to temperature variation information is nimble, control temperature detecting element detects the battery temperature with a suitable detection time interval, avoids frequently detecting the problem that the temperature leads to MCU consumption increase, perhaps can't in time detect the problem that the battery temperature leads to the battery to damage unusually to extension battery power supply time and life-span.
Drawings
FIG. 1 is a first flowchart of a method for detecting a battery temperature according to an embodiment of the present disclosure;
FIG. 2 is a second flowchart of a method for detecting a battery temperature according to an embodiment of the present disclosure;
FIG. 3 is a third flowchart of a method for detecting a battery temperature according to an embodiment of the present disclosure;
FIG. 4 is a first sampling timing chart of a battery warming process according to an embodiment of the present application;
FIG. 5 is a timing diagram illustrating a sampling process of cooling the battery according to an embodiment of the present disclosure;
FIG. 6 is a second sampling timing chart of the battery warming process according to the embodiment of the present application;
FIG. 7 is a fourth flowchart of a battery temperature detection method according to an embodiment of the present application;
FIG. 8 is a schematic diagram of a first structure of a battery temperature detecting device according to an embodiment of the present disclosure;
FIG. 9 is a second structural diagram of a battery temperature detecting device according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of a household appliance in the embodiment of the present application.
Detailed Description
So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.
Example one
An embodiment of the present application provides a method for detecting a battery temperature, fig. 1 is a schematic diagram of a first flow of the method for detecting a battery temperature in the embodiment of the present application, and as shown in fig. 1, the method for detecting a battery temperature may specifically include:
step 101: controlling a temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
the first temperature detection frequency indicates an interval time during which the temperature detection unit detects the battery. The temperature detection unit is controlled to detect a current temperature value of the battery based on the interval time.
It should be noted that, the larger the first temperature detection frequency is, the shorter the interval time for detecting the battery is; the smaller the first temperature detection frequency, the longer the interval time for detecting the battery.
Illustratively, based on the timing time, a temperature value of a temperature sensor on the battery is detected by an ADC analog-to-digital conversion module in the temperature detection unit, and the temperature value is a current temperature value of the battery.
Here, the battery may be a battery installed in a portable home appliance, and the battery may be a lithium battery. The household appliance may include a vacuum cleaner, among others.
In some embodiments, the step specifically includes: when the processor is in a dormant state, controlling the processor to be switched from the dormant state to a working state according to the first temperature detection frequency so as to control the temperature detection unit to detect the current temperature value of the battery; the method further comprises the following steps: controlling the processor to switch to a sleep state after detecting a current temperature value of the battery.
It should be noted that, when the processor states are different, the method for detecting the current temperature value of the battery is different. Specifically, if the processor is in a working state, the temperature detection unit is controlled to detect the current temperature value of the battery directly according to the first temperature detection frequency. If the processor is in a dormant state, the processor needs to be awakened first, specifically, the processor is controlled to be switched to a working state from the dormant state according to the first temperature detection frequency, then the temperature detection unit is controlled to detect the current temperature value of the battery, and after the processor is detected to be finished, the processor can be controlled to be switched back to the dormant state, so that the power consumption of the MCU is reduced, the power supply time of the battery is prolonged, and certain electric energy is saved.
In some embodiments, the method further comprises: generating high-temperature alarm prompt information when the current temperature value is greater than a first temperature threshold value; or, the current temperature value is smaller than a second temperature threshold value, and low-temperature alarm prompt information is generated.
It should be noted that the first temperature threshold is a lowest temperature value corresponding to the high-temperature alarm prompt information. The second temperature threshold is the highest temperature value corresponding to the low-temperature alarm prompt information.
Specifically, if the current temperature value is detected to be larger than the first temperature threshold value, the display unit is controlled to display high-temperature alarm prompt information on the display screen, if the temperature value is too high, the battery needs to be stopped immediately, or the high-temperature alarm prompt is performed through an indicator lamp with a fixed color. If the current temperature value is detected to be smaller than the second temperature threshold value, the display unit is controlled to display low-temperature alarm prompt information on the display screen, if the temperature value is too low, the battery needs to be stopped immediately, or low-temperature alarm prompt is carried out through an indicator lamp with a fixed color.
Step 102: acquiring at least one historical temperature value of the battery from a storage unit;
it should be noted that the storage unit may be stored in the household appliance, or may be stored in the cloud.
Here, at least one historical temperature value of the battery before the time may be directly acquired from the storage unit when stored in the home appliance. When the temperature values are stored in the cloud, the storage unit may store at least one historical temperature value corresponding to the batteries of the plurality of household appliances, so that when the historical temperature value of the current battery is obtained from the storage unit, the sub-storage unit needs to be determined according to the type of the current battery, and then at least one historical temperature value of the current battery is obtained from the sub-storage unit.
In some embodiments, the method further comprises: and when the current temperature value meets the storage condition, storing the current temperature value into the storage unit as the historical temperature value at the latest moment, and deleting the historical temperature value at the farthest moment.
It should be noted that the storage condition includes at least one of the following: when the current temperature value is determined to be larger than a preset temperature threshold value, storing the current temperature value; storing each detected temperature value; and storing the detected temperature values according to a preset time interval.
Specifically, temperature values larger than a preset temperature threshold value are stored in a storage unit, time information corresponding to each temperature value is recorded, and when a certain number of temperature values are to be stored, historical temperature values at the earliest moment (namely, the farthest moment) are deleted, so that a certain storage space is saved. Or storing each detected temperature value in a storage unit, recording time information corresponding to each temperature value, and deleting the historical temperature value at the earliest time (namely, the farthest time) when a certain number of temperature values are to be stored. Or, if the detected temperature values are stored according to the preset time interval, the stored data also have reference significance, and similarly, when a certain number of temperature values are to be stored, the historical temperature value at the earliest moment (namely, the farthest moment) is deleted, so that a certain storage space is saved.
Step 103: determining temperature change information of the battery based on the current temperature value and the at least one historical temperature value;
it should be noted that the temperature change information includes a temperature change trend and a temperature change rate.
Here, the temperature change tendency includes an upward tendency and a downward tendency. If the current temperature value of the battery is increased relative to the historical temperature value, determining that the temperature change trend of the battery is an increasing trend; and if the current temperature value of the battery is reduced relative to the historical temperature value, determining that the temperature change trend of the battery is a descending trend.
Here, the temperature change rate refers to a change rate of the current temperature value with respect to the historical temperature value. Specifically, the temperature difference between the current temperature value and each historical temperature value in at least one historical temperature value is respectively calculated to obtain at least one temperature difference value; respectively counting and detecting temperature detection frequencies corresponding to the current temperature value and at least one historical temperature value; and then, multiplying each temperature difference value in the at least one temperature difference value by the corresponding temperature detection frequency to obtain at least one temperature change rate. And then, calculating an average change rate corresponding to at least one temperature change rate, and taking the calculated average change rate as the temperature change rate of the battery.
For example, if 3 historical temperature values are obtained from the storage unit, the current temperature values are respectively: the temperature detection frequency corresponding to the first historical temperature value is a first frequency, and the temperature detection frequency corresponding to the second historical temperature value is a second frequency. Calculating the difference between the current temperature value and the first historical temperature value, and multiplying the difference by the first temperature detection frequency to obtain a first temperature change rate; calculating the difference between the current temperature value and the second historical temperature value, and multiplying the difference by the sum of the first temperature detection frequency and the first frequency to obtain a second temperature change rate; and calculating the difference between the current temperature value and the third history temperature value, and multiplying the difference by the sum of the first temperature detection frequency, the first frequency and the second frequency to obtain a third temperature change rate. Then, the average change rate of the first temperature change rate, the second temperature change rate and the third temperature change rate is calculated, and the calculated average change rate is used as the temperature change rate of the battery.
Step 104: when the temperature change information meets a preset adjusting condition, obtaining a second temperature detection frequency;
the preset adjustment condition is a condition for adjusting the first temperature detection frequency. The temperature change information includes a temperature change tendency and a temperature change rate. Namely, when the temperature change trend and the temperature change rate simultaneously meet the preset adjustment condition, the preset frequency corresponding to the adjustment condition is used as the second temperature detection frequency.
In some embodiments, the step specifically includes: when the temperature change information meets the first condition, taking a first preset frequency corresponding to the preset first condition as the second temperature detection frequency; and when the temperature change information meets the second condition, taking a second preset frequency corresponding to the preset second condition as the second temperature detection frequency.
Step 105: and taking the second temperature detection frequency as a new first temperature detection frequency.
Here, the temperature detecting unit is controlled to detect the temperature value of the battery at the next time based on the second temperature detecting frequency. That is, steps 101 to 105 are executed again until the detection work of the battery is finished.
Here, until the battery detection operation is completed, steps 101 to 105 are executed in a loop. The temperature detection interval time of the second temperature detection frequency may be equal or unequal. When the intervals are unequal, the intervals can be increased or decreased, and the intervals are mainly related to temperature change information.
Here, the execution subject of steps 101 to 105 may be a processor of the battery temperature detection apparatus.
By adopting the technical scheme, the temperature change information of the battery within a period of time is monitored, the first temperature detection frequency is flexibly adjusted according to the temperature change information, the temperature detection unit is controlled to detect the temperature of the battery at a proper detection time interval, the problem that the power consumption of an MCU is increased due to frequent temperature detection is avoided, or the problem that the battery is damaged due to abnormal battery temperature cannot be timely detected, so that the power supply time and the service life of the battery are prolonged.
Example two
Fig. 2 is a schematic diagram of a second process of the battery temperature detection method in the embodiment of the present application, and as shown in fig. 2, the battery temperature detection method specifically includes:
step 201: controlling a temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
in some embodiments, the step specifically includes: when the processor is in a dormant state, controlling the processor to be switched from the dormant state to a working state according to the first temperature detection frequency so as to control the temperature detection unit to detect the current temperature value of the battery; the method further comprises the following steps: controlling the processor to switch to a sleep state after detecting a current temperature value of the battery.
It should be noted that, when the processor states are different, the method for detecting the current temperature value of the battery is different. Specifically, if the processor is in a working state, the temperature detection unit is controlled to detect the current temperature value of the battery directly according to the first temperature detection frequency. If the processor is in a dormant state, the processor needs to be awakened first, specifically, the processor is controlled to be switched to a working state from the dormant state according to the first temperature detection frequency, then the temperature detection unit is controlled to detect the current temperature value of the battery, and after the processor is detected to be finished, the processor can be controlled to be switched back to the dormant state, so that the power consumption of the MCU is reduced, the power supply time of the battery is prolonged, and certain electric energy is saved.
In some embodiments, the method further comprises: generating high-temperature alarm prompt information when the current temperature value is greater than a first temperature threshold value; or, the current temperature value is smaller than a second temperature threshold value, and low-temperature alarm prompt information is generated.
Step 202: acquiring at least one historical temperature value of the battery from a storage unit;
in some embodiments, the method further comprises: and when the current temperature value is determined to be stored according to the second temperature detection frequency, storing the current temperature value into the storage unit as the historical temperature value at the latest moment, and deleting the historical temperature value at the farthest moment.
Step 203: determining a temperature trend and a temperature change rate of the battery based on the current temperature value and the at least one historical temperature value;
step 204: when the temperature change trend and the temperature change rate meet preset adjustment conditions, a second temperature detection frequency is obtained;
the preset adjustment condition is a condition for adjusting the first temperature detection frequency. The adjustment condition includes a first condition and a second condition; the first condition comprises that the temperature change trend is an ascending trend, and the temperature change rate is in a first temperature change rate range; the second condition includes that the temperature change trend is a descending trend, and the temperature change rate is in a second temperature change rate range.
In some embodiments, the step specifically includes: when the temperature change trend and the temperature change rate meet the first condition, taking a first preset frequency corresponding to the preset first condition as the second temperature detection frequency; and when the temperature change trend and the temperature change rate meet the second condition, taking a second preset frequency corresponding to the preset second condition as the second temperature detection frequency.
When the battery temperature variation trend is an ascending trend, if it is detected that the temperature variation rate of the battery is in a first temperature variation rate range, taking a first preset frequency corresponding to the first temperature variation rate range as a temperature detection frequency (i.e., a second temperature detection frequency) for detecting the battery temperature value next time; if the temperature change rate of the battery is detected to be out of the first temperature change rate range, the temperature detection frequency for detecting the battery temperature value next time can still be the first temperature detection frequency (i.e. the first temperature detection frequency is used as the second temperature detection frequency). When the battery temperature variation trend is a descending trend, if the current temperature value of the battery is detected to be in a preset second temperature value range, taking a second preset frequency corresponding to the second temperature value range as a temperature detection frequency (namely, a second temperature detection frequency) for detecting the battery temperature value next time; if the current temperature value of the battery is detected to be out of the preset second temperature value range, the temperature detection frequency for detecting the temperature value of the battery next time can still be the first temperature detection frequency (i.e. the first temperature detection frequency is taken as the second temperature detection frequency).
In addition, in order to obtain a more accurate temperature detection frequency, the first temperature change rate range and the second temperature change rate range may be set to be more finely divided. Wherein, the unit of the temperature change rate can be ℃/s or ℃/min.
Illustratively, the first temperature change rate range includes: 0 to 5, 5 to 10, 10 to 15, 15 to 20, 20; likewise, the second temperature change rate range may also include: 0 to 5, 5 to 10, 10 to 15, 15 to 20, 20. Under a first condition, searching a matched temperature change rate range from the first temperature change rate range according to the current temperature change rate of the battery, and taking a first preset frequency corresponding to the matched temperature change rate as a temperature detection frequency (namely, a second temperature detection frequency) for detecting the battery temperature value next time. Under a second condition, searching a matched temperature change rate range from the second temperature change rate range according to the current temperature change rate of the battery, and taking a second preset frequency corresponding to the matched temperature change rate as a temperature detection frequency (namely, a second temperature detection frequency) for detecting the battery temperature value next time.
The smaller the first temperature change rate range and the second temperature change rate range mentioned above, the more accurate the obtained temperature detection frequency is, the better the temperature of the battery is adjusted, and the service life of the battery is prolonged.
When the temperature variation trend of the battery is an ascending trend, the corresponding first preset frequency is also increased along with the increase of the current temperature variation rate of the battery, for example, when the current temperature variation rate of the battery is higher than 20, the corresponding first preset frequency is the largest, that is, the corresponding temperature detection interval time is shorter. When the temperature variation trend of the battery is a descending trend, along with the reduction of the current temperature variation rate of the battery, the corresponding second preset frequency is reduced, that is, the corresponding temperature detection interval time is longer, for example, when the current temperature variation rate of the battery is lower than 5, the corresponding second preset frequency is minimum.
Here, the temperature detection frequency of the battery is mainly related to a temperature change rate, and when the temperature change trend of the battery is an increasing trend, the larger the temperature change rate is, the larger the corresponding temperature detection frequency (i.e., the first preset frequency) is; when the battery temperature variation trend is a descending trend, the larger the absolute value of the temperature variation rate is, the larger the corresponding temperature detection frequency (i.e. the second preset frequency) is. Therefore, the first predetermined frequency and the second predetermined frequency have no absolute relationship, and the first predetermined frequency may be greater than or equal to the second predetermined frequency, or may be smaller than the second predetermined frequency.
Step 205: and taking the second temperature detection frequency as a new first temperature detection frequency.
Here, the temperature detecting unit is controlled to detect the temperature value of the battery at the next time based on the second temperature detecting frequency. That is, steps 201 to 205 are executed again until the detection work of the battery is finished.
Here, step 201 to step 205 are executed in a loop until the battery detection operation is finished. The temperature detection interval time of the second temperature detection frequency may be equal or unequal. When the intervals are unequal, the intervals can be increased or decreased, and the intervals are mainly related to temperature change information.
By adopting the technical scheme, the temperature change information of the battery within a period of time is monitored, the first temperature detection frequency is flexibly adjusted according to the temperature change information, the temperature detection unit is controlled to detect the temperature of the battery at a proper detection time interval, the problem that the power consumption of an MCU is increased due to frequent temperature detection is avoided, or the problem that the battery is damaged due to abnormal battery temperature cannot be timely detected, so that the power supply time and the service life of the battery are prolonged.
EXAMPLE III
Based on the foregoing embodiment, the present application further provides a battery temperature detection method, where fig. 3 is a third schematic flow chart of the battery temperature detection method in the embodiment of the present application, and as shown in fig. 3, the battery temperature detection method specifically includes:
step 301: detecting a current temperature value Temp1 of the battery according to the detection interval time T0 of the first temperature detection frequency;
here, the temperature value of the temperature sensor on the battery, that is, the current temperature value Temp1 of the battery, may be detected by the ADC analog-to-digital conversion module in the temperature detection unit based on the detection interval time T0.
In addition, when the processor state is different, the method for detecting the current temperature value of the battery is different. Specifically, if the processor is in the operating state, the temperature detection unit is controlled to detect the current temperature value Temp1 of the battery directly according to the temperature time interval corresponding to the first temperature detection frequency. If the processor is in a sleep state, the processor needs to be awakened first, specifically, the processor is controlled to be switched to a working state from the sleep state according to a temperature time interval corresponding to the first temperature detection frequency, then the temperature detection unit is controlled to detect the current temperature value Temp1 of the battery, and after the processor is detected to be finished, the processor can be controlled to be switched back to the sleep state, so that the power consumption of the MCU is reduced, the power supply time of the battery is prolonged, and certain electric energy is saved.
If the current temperature value Temp1 is greater than the first temperature threshold value, generating high-temperature alarm prompt information; or the current temperature value Temp1 is smaller than the second temperature threshold value, and low-temperature alarm prompt information is generated. The specific controllable display unit displays high-temperature or low-temperature alarm prompt information on the display screen, for example, if the temperature value is too high and the battery needs to be stopped immediately, or if the temperature value is too low and the battery needs to be stopped immediately, or the high-temperature alarm prompt is performed through an indicator lamp with fixed color.
Step 302: acquiring a historical temperature value Temp2 from a storage unit;
here, the storage unit may be stored in the home appliance, or may be stored in the cloud.
Step 303: judging whether the difference value between Temp1 and Temp2 is greater than or equal to 0; if yes, go to step 304; if not, go to step 305;
step 304: the temperature of the battery is in an increasing trend;
step 305: the temperature of the battery is in a descending trend;
step 306: calculating the difference between Temp1 and Temp2, and then dividing the difference with T0 to obtain the temperature change rate dt;
step 307: judging whether dt is within a preset temperature change rate range; if yes, go to step 308; if not, go to step 309;
here, the preset temperature difference range includes a first temperature change rate range and a second temperature change rate range. Specifically, the temperature change trend is an ascending trend, and it is determined whether the temperature change rate is in a first temperature change rate range, and if the temperature change rate is in the first temperature change rate range, it indicates that the temperature of the battery is increasing too fast, and the first temperature detection frequency needs to be increased, that is, the detection interval time T0 of the first temperature detection frequency is decreased, that is, step 308 is executed; if the temperature value is outside the first temperature change rate range, the temperature of the battery is slow to rise, the first temperature detection frequency of the battery does not need to be adjusted, and the temperature detection unit can be continuously controlled to detect the temperature value of the battery according to the first temperature detection frequency.
If the temperature change trend is a descending trend, determining whether the temperature change rate is in the second temperature change rate range, and if the temperature change rate is in the second temperature change rate range, which indicates that the temperature of the battery is falling too fast, the first temperature detection frequency needs to be decreased, that is, the detection interval time T0 of the first temperature detection frequency is increased, that is, step 309 is executed; if the temperature value is out of the range of the second temperature change rate, the temperature of the battery is reduced slowly, the first temperature detection frequency of the battery does not need to be adjusted, and the temperature detection unit can be controlled to detect the temperature value of the battery continuously according to the first temperature detection frequency.
Step 308: the detection interval time T0 of the first temperature detection frequency is decreased;
here, the first temperature control frequency is decreased, and the above-described steps are repeatedly performed again at a new first temperature control frequency (i.e., the second temperature control frequency).
Step 309: the detection interval time T0 of the first temperature detection frequency is increased.
Here, the first temperature control frequency is increased, and the above-described steps are repeatedly performed again at the new first temperature control frequency (i.e., the second temperature control frequency).
The present application illustrates corresponding fig. 4 and 5 with respect to step 308 and step 309. Fig. 4 is a first sampling timing chart of the battery temperature increasing process in the embodiment of the present application, and as shown in fig. 4, the detection time interval of the temperature detection frequency gradually shortens as the battery temperature increases.
Fig. 5 is a sampling timing chart of the battery cooling process in the embodiment of the present application, and as shown in fig. 5, the detection time interval of the temperature detection frequency gradually increases as the battery temperature decreases.
In addition, fig. 6 is a second sampling timing chart of the battery temperature raising process in the embodiment of the present application, and as shown in fig. 6, when the battery temperature rises suddenly from Temp3 to Temp4, the temperature detection frequency of the battery is adjusted to the highest temperature detection frequency to ensure that the battery is not damaged.
By adopting the technical scheme, the temperature change information of the battery within a period of time is monitored, the first temperature detection frequency is flexibly adjusted according to the temperature change information, the temperature detection unit is controlled to detect the temperature of the battery at a proper detection time interval, the problem that the power consumption of an MCU is increased due to frequent temperature detection is avoided, or the problem that the battery is damaged due to abnormal battery temperature cannot be timely detected, so that the power supply time and the service life of the battery are prolonged.
Fig. 7 is a fourth flowchart of a battery temperature detection method according to an embodiment of the present invention, as shown in fig. 7, specifically,
step 701: controlling a temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
step 702: when the current temperature value meets a preset temperature value change range, acquiring a second temperature detection frequency corresponding to the temperature value change range;
it should be noted that the preset temperature value variation range refers to a variation range of the current temperature value of the battery. If the detected current temperature value meets the preset temperature value change range, taking the temperature detection frequency corresponding to the temperature value change range as a second temperature detection frequency; if the detected current temperature value does not meet the preset temperature value change range, the temperature detection frequency of the battery does not need to be adjusted, namely, the first temperature detection frequency is used as the second temperature detection frequency.
Here, the preset temperature value variation range may be set according to experimental results or may be set by human experience.
In addition, it should be noted that, if a more accurate second temperature detection frequency is desired to be obtained, the preset temperature value variation range may be divided more finely.
Illustratively, the preset temperature value variation range includes: 0 to 10 degrees, 10 to 20 degrees, 20 to 30 degrees, 30 to 40 degrees, 40 to 50 degrees, 50 to 60 degrees, 60 to 70 degrees, 70 degrees. And searching a matched temperature value change range from a preset temperature value change range according to the current temperature value of the battery, and taking a first preset frequency corresponding to the matched temperature value change range as a temperature detection frequency (namely a second temperature detection frequency) for detecting the temperature value of the battery at the next time. Wherein, different temperature value change ranges correspond to different second temperature detection frequencies.
As the current temperature value of the battery increases, the corresponding second temperature detection frequency also increases, for example, when the current temperature value of the battery is higher than 70 degrees, the corresponding second temperature detection frequency is maximum, that is, the corresponding temperature detection interval time is shorter. As the current temperature value of the battery decreases, the corresponding second temperature detection frequency decreases, that is, the corresponding temperature detection interval time is longer, for example, when the current temperature value of the battery is lower than 10 degrees, the corresponding second temperature detection frequency is minimum.
Step 703: and taking the second temperature detection frequency as a new first temperature detection frequency.
By adopting the technical scheme, the change range of the temperature value to which the current temperature value of the battery belongs is determined, the first temperature detection frequency is flexibly adjusted according to the change range of the temperature value to which the current temperature value of the battery belongs, and the temperature detection unit is controlled to detect the temperature of the battery at a proper detection time interval, so that the problem that the power consumption of an MCU is increased due to frequent temperature detection or the battery is damaged due to the fact that abnormal temperature of the battery cannot be detected in time is avoided, and the power supply time and the service life of the battery are.
In order to implement the method of the embodiment of the present application, based on the same inventive concept, an embodiment of the present application further provides a battery temperature detection apparatus, fig. 8 is a schematic diagram of a first structure of the battery temperature detection apparatus in the embodiment of the present application, and as shown in fig. 8, the apparatus includes:
the first detection unit 801 is used for controlling the temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
a first obtaining unit 802, configured to obtain at least one historical temperature value of the battery from a storage unit;
a first determining unit 803, configured to determine temperature change information of the battery based on the current temperature value and the at least one historical temperature value;
the first determining unit 803 is further configured to obtain a second temperature detection frequency when the temperature change information meets a preset adjustment condition; and taking the second temperature detection frequency as a new first temperature detection frequency.
In some embodiments, the temperature change information includes a temperature change trend, and the adjustment condition includes: the first condition includes that the temperature change trend is an ascending trend; the second condition includes the temperature trend being a downward trend.
In some embodiments, the temperature change information further includes a temperature change rate, and the adjustment condition includes: the first condition comprises that the temperature change trend is an ascending trend, and the temperature change rate is in a first temperature change rate range; the second condition includes that the temperature change trend is a downward trend, and the temperature change rate is in a second temperature change rate range.
In some embodiments, the apparatus comprises: a first determining unit 803, configured to, when the temperature change information meets the first condition, use a preset first preset frequency corresponding to the first condition as the second temperature detection frequency; and when the temperature change information meets the second condition, taking a second preset frequency corresponding to the preset second condition as the second temperature detection frequency.
In some embodiments, the temperature detection interval time of the second temperature detection frequency is equally or unequally spaced.
In some embodiments, the apparatus comprises: the first detection unit 801 is specifically configured to, when the processor is in a sleep state, control the processor to switch from the sleep state to a working state according to a first temperature detection frequency, so as to control the temperature detection unit to detect a current temperature value of the battery; the method further comprises the following steps: controlling the processor to switch to a sleep state after detecting a current temperature value of the battery.
In some embodiments, the method further comprises: and when the current temperature value meets the storage condition, storing the current temperature value into the storage unit as the historical temperature value at the latest moment, and deleting the historical temperature value at the farthest moment.
In some embodiments, the method further comprises: generating high-temperature alarm prompt information when the current temperature value is greater than a first temperature threshold value; or, the current temperature value is smaller than a second temperature threshold value, and low-temperature alarm prompt information is generated.
By adopting the technical scheme, the temperature change information of the battery within a period of time is monitored, the first temperature detection frequency is flexibly adjusted according to the temperature change information, the temperature detection unit is controlled to detect the temperature of the battery at a proper detection time interval, the problem that the power consumption of an MCU is increased due to frequent temperature detection is avoided, or the problem that the battery is damaged due to abnormal battery temperature cannot be timely detected, so that the power supply time and the service life of the battery are prolonged.
The embodiment of the present application further provides a battery temperature detection device, fig. 9 is a schematic diagram of a second structure formed by the battery temperature detection device in the embodiment of the present application, and as shown in fig. 9, the device includes:
the second detection unit 901 controls the temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
a second obtaining unit 902, configured to obtain a second temperature detection frequency corresponding to the temperature value change range when the current temperature value meets a preset temperature value change range; and taking the second temperature detection frequency as a new first temperature detection frequency.
By adopting the technical scheme, the change range of the temperature value to which the current temperature value of the battery belongs is determined, the first temperature detection frequency is flexibly adjusted according to the change range of the temperature value to which the current temperature value of the battery belongs, and the temperature detection unit is controlled to detect the temperature of the battery at a proper detection time interval, so that the problem that the power consumption of an MCU is increased due to frequent temperature detection or the battery is damaged due to the fact that abnormal temperature of the battery cannot be detected in time is avoided, and the power supply time and the service life of the battery are.
Based on the hardware implementation of each unit in the battery temperature detection apparatus, an embodiment of the present application further provides a home appliance, fig. 10 is a schematic structural diagram of the home appliance in the embodiment of the present application, and as shown in fig. 10, the home appliance includes: a processor 1001 and a memory 1002 configured to store a computer program capable of running on the processor;
wherein the processor 1001 is configured to execute the method steps in the previous embodiments when running the computer program.
Of course, in actual practice, as shown in fig. 10, the various components in the household appliance are coupled together by a bus system 1003. It will be appreciated that the bus system 1003 is used to enable communications among these components. The bus system 1003 includes a power bus, a control bus, and a status signal bus, in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 1003 in figure 10.
In practical applications, the processor may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, and a microprocessor. It is understood that the electronic devices for implementing the above processor functions may be other devices, and the embodiments of the present application are not limited in particular.
The Memory may be a volatile Memory (volatile Memory), such as a Random-Access Memory (RAM); or a non-volatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (HDD), or a Solid-State Drive (SSD); or a combination of the above types of memories and provides instructions and data to the processor.
In an exemplary embodiment, the present application further provides a computer readable storage medium, such as a memory including a computer program, which is executable by a processor of a home appliance to perform the steps of the foregoing method.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. The expressions "having", "may have", "include" and "contain", or "may include" and "may contain" in this application may be used to indicate the presence of corresponding features (e.g. elements such as values, functions, operations or components) but does not exclude the presence of additional features.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another, and are not necessarily used to describe a particular order or sequence. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention.
The technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.
In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus, and device may be implemented in other ways. The above-described embodiments are merely illustrative, and for example, the division of a unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Claims (13)
1. A method for detecting a temperature of a battery, the method comprising:
controlling a temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
acquiring at least one historical temperature value of the battery from a storage unit;
determining temperature change information of the battery based on the current temperature value and the at least one historical temperature value;
when the temperature change information meets a preset adjusting condition, obtaining a second temperature detection frequency;
and taking the second temperature detection frequency as a new first temperature detection frequency.
2. The method of claim 1, wherein the temperature change information comprises a temperature change trend, and the adjustment condition comprises:
the first condition includes that the temperature change trend is an ascending trend;
the second condition includes the temperature trend being a downward trend.
3. The method of claim 2, wherein the temperature change information further includes a temperature change rate, and the adjustment condition includes:
the first condition comprises that the temperature change trend is an ascending trend, and the temperature change rate is in a first temperature change rate range;
the second condition includes that the temperature change trend is a downward trend, and the temperature change rate is in a second temperature change rate range.
4. The method according to claim 2 or 3, wherein obtaining a second temperature detection frequency when the temperature change information satisfies a preset adjustment condition comprises:
when the temperature change information meets the first condition, taking a first preset frequency corresponding to the preset first condition as the second temperature detection frequency;
and when the temperature change information meets the second condition, taking a second preset frequency corresponding to the preset second condition as the second temperature detection frequency.
5. The method of claim 1, wherein the second temperature detection frequency is equally or unequally spaced in temperature detection interval time.
6. The method according to claim 1, wherein controlling the temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency comprises:
when the processor is in a dormant state, controlling the processor to be switched from the dormant state to a working state according to the first temperature detection frequency so as to control the temperature detection unit to detect the current temperature value of the battery;
the method further comprises the following steps:
controlling the processor to switch to a sleep state after detecting a current temperature value of the battery.
7. The method of claim 1, further comprising:
and when the current temperature value meets the storage condition, storing the current temperature value into the storage unit as the historical temperature value at the latest moment, and deleting the historical temperature value at the farthest moment.
8. The method of claim 1, further comprising:
generating high-temperature alarm prompt information when the current temperature value is greater than a first temperature threshold value;
or, the current temperature value is smaller than a second temperature threshold value, and low-temperature alarm prompt information is generated.
9. A method for detecting a temperature of a battery, the method comprising:
controlling a temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
when the current temperature value meets a preset temperature value change range, acquiring a second temperature detection frequency corresponding to the temperature value change range;
and taking the second temperature detection frequency as a new first temperature detection frequency.
10. A battery temperature detection apparatus, characterized in that the apparatus comprises:
the first detection unit is used for controlling the temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
the first acquisition unit is used for acquiring at least one historical temperature value of the battery from the storage unit;
a determination unit for determining temperature change information of the battery based on the current temperature value and the at least one historical temperature value;
the determining unit is further configured to obtain a second temperature detection frequency when the temperature change information meets a preset adjustment condition; and taking the second temperature detection frequency as a new first temperature detection frequency.
11. A battery temperature detection apparatus, characterized in that the apparatus comprises:
the second detection unit is used for controlling the temperature detection unit to detect the current temperature value of the battery according to the first temperature detection frequency;
the second acquisition unit is used for acquiring a second temperature detection frequency corresponding to the temperature value change range when the current temperature value meets the preset temperature value change range; and taking the second temperature detection frequency as a new first temperature detection frequency.
12. A household appliance, characterized in that the terminal device comprises: a processor and a memory configured to store a computer program capable of running on the processor,
wherein the processor is configured to perform the steps of the method of any one of claims 1 to 9 when running the computer program.
13. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 9.
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