CN111295001A - High-frequency discharge system for solar outdoor street lamp - Google Patents
High-frequency discharge system for solar outdoor street lamp Download PDFInfo
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- CN111295001A CN111295001A CN202010083582.XA CN202010083582A CN111295001A CN 111295001 A CN111295001 A CN 111295001A CN 202010083582 A CN202010083582 A CN 202010083582A CN 111295001 A CN111295001 A CN 111295001A
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- 238000004146 energy storage Methods 0.000 claims abstract description 29
- 238000005286 illumination Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims description 29
- 238000005265 energy consumption Methods 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 13
- 238000012423 maintenance Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 description 12
- 230000001276 controlling effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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Abstract
The invention discloses a high-frequency discharge system for a solar outdoor street lamp, and particularly relates to the field of solar power generation. The invention adopts the high-frequency discharge device to perform stepped discharge regulation and control according to the capacity of the storage battery and the LED parameters, can use the limited electric quantity generated in the electric energy storage device to a greater extent, solves the problem of street lamp power failure caused by less electric quantity generated in rainy days, can use the output of equal electric quantity to generate the effects of increasing the light illumination degree and the irradiation range, can reasonably save the consumption of the electric quantity, and is mainly used for outdoor equipment of solar integrated street lamps and garden landscape lamps.
Description
Technical Field
The embodiment of the invention relates to the field of solar power generation, in particular to a high-frequency discharge system for a solar outdoor street lamp.
Background
Solar power generation is a device that directly converts solar energy into electrical energy using a battery module. Solar cell modules (Solar cells) are solid devices which utilize the electronic characteristics of semiconductor materials to realize P-V conversion, in vast areas without power grids, the devices can conveniently realize illumination and living power supply for users, and some developed countries can realize complementation with regional power grid connection. At present, from the civil perspective, the technical research tends to be mature at abroad and the technology is the technology of 'photovoltaic-building (lighting) integration', and the domestic main research and production are suitable for the small-sized solar power generation system for household lighting in the electroless region.
The use of solar energy is mainly divided into several areas: the solar energy power station comprises a household small-sized solar power station, a large-sized grid-connected power station, a building integrated photovoltaic glass curtain wall, a solar street lamp, a wind-solar complementary power supply system and the like.
The solar street lamp is powered by a crystalline silicon solar cell, a maintenance-free valve-controlled sealed storage battery (a colloid battery) stores electric energy, and the ultra-high-brightness LED lamp is used as a light source and is controlled by an intelligent charging and discharging controller and used for replacing the traditional public power lighting street lamp. Cables do not need to be laid, alternating current power supply is not needed, and electric charge is not generated; DC power supply and photosensitive control are adopted; the LED lamp has the advantages of good stability, long service life, high luminous efficiency, simple and convenient installation and maintenance, high safety performance, energy conservation, environmental protection, economy, practicability and the like.
Because solar energy power generation receives the influence round the clock, weather, season, consequently, solar street lamp also has the problem that receives the weather influence easily, and in rainy weather, the electric quantity that produces is few, can not guarantee that the street lamp has the electricity in all weather, and also has very big influence to its illumination brightness.
Disclosure of Invention
Therefore, the embodiment of the invention provides a high-frequency discharge system for a solar outdoor street lamp, which adopts a high-frequency discharge device to perform stepped discharge regulation and control according to the capacity of a storage battery and LED parameters, can enable the limited electric quantity generated in an electric energy storage device to be used to a greater extent, solves the problem that the street lamp is powered off due to the fact that the electric quantity generated in rainy days is small, can enable the whole system to use the output of the equal electric quantity to generate the effects of increasing the illumination degree and the illumination range, can reasonably save the consumption of the electric quantity, and solves the problems that the solar power generation cannot be used for all-weather illumination and the illumination brightness is influenced due to the influence of the rainy days in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: a high-frequency discharge system for a solar outdoor street lamp comprises a solar component, an electric energy storage device, a PWM (pulse-width modulation) controller and an LED (light-emitting diode) lamp, wherein the solar component collects light energy and converts the light energy into electric energy to be stored in the electric energy storage device, voltage is output to the LED lamp after being subjected to constant voltage control by the PWM controller, illumination of the LED lamp is realized, a high-frequency discharge device is connected between the electric energy storage device and the PWM controller, and the high-frequency discharge device is used for detecting the stored electric quantity of the electric energy storage device, calculating the electric quantity required by the LED lamp and controlling the discharge quantity by adopting a stepped discharge method;
the high-frequency discharging device comprises an electric quantity detection module, an energy consumption electric quantity calculation module, a light source database and a discharging control module;
the electric quantity detection module is used for detecting the electric quantity stored in the electric energy storage device;
the energy consumption electric quantity calculation module is used for calculating electric energy required by the LED lamp during the illumination period according to the electric power and time of the LED lamp, is connected with the light source database and is used for acquiring basic parameters of the LED lamp stored in the light source database;
the discharge control module is used for controlling the discharge quantity of the high-frequency discharge device by adopting a stepped discharge method.
Further, the solar module is specifically a solar panel and is used for collecting solar energy.
Further, the electric energy storage device comprises a solar controller and a storage battery, wherein the solar controller is used for converting the light energy collected by the solar component into direct current electric energy to be stored in the storage battery.
Further, the storage batteries are arranged into two groups, the two groups of storage batteries are connected with the solar controller in parallel, and the storage batteries are specifically lithium iron phosphate batteries.
Furthermore, the electric quantity detection module is an online storage battery capacity detection instrument, and specifically can be a BOSCH storage battery electric quantity sensor.
Further, the discharge control module is connected with the PWM controller and the solar controller and used for controlling the storage battery to discharge in a stepped high-frequency mode.
Further, the high-frequency discharge device further comprises a timing module, a temperature detection module and a service life estimation module, wherein the temperature detection module is used for detecting the operating temperature of the storage battery, the timing module is used for detecting the charging and discharging time of the storage battery, the output ends of the timing module and the temperature detection module are connected with the input end of the service life estimation module and used for estimating the service life of the storage battery through the calculation of time and temperature detection values, the high-frequency discharge device is connected with a street lamp control system through a wireless communication module, and the output end of the street lamp control system is connected with a maintenance terminal.
Furthermore, the high-frequency discharge device also comprises a forecast precaution module, the forecast precaution module is connected with a weather forecast interface through a 4G/5G network, and the weather forecast interface is specifically an interface which is provided by the national weather bureau and other weather forecast websites and used for acquiring weather information.
Furthermore, the output end of the forenotice precaution module is connected with the discharge control module, the solar controller and the street lamp control system and used for reasonably arranging electric energy storage, consumption and power supply modes according to weather conditions.
The embodiment of the invention has the following advantages:
1. the invention adopts the high-frequency discharge device, performs stepped discharge regulation and control according to the capacity of the storage battery and the LED parameters, can use the limited electric quantity generated in the electric energy storage device to a greater extent, solves the problem of street lamp power failure caused by less electric quantity generated in rainy days, can use the output of equal electric quantity to generate the effects of increasing the light illumination degree and increasing the irradiation range, can reasonably save the consumption of electric quantity, and is mainly used for outdoor equipment of solar integrated street lamps and garden landscape lamps;
2. according to the invention, through the matching use of the timing module, the temperature detection module and the service life estimation module, the service life estimation can be carried out through the operation temperature, the operation time and the like of the storage battery, when the storage battery is seriously worn, the alarm information can be sent to the street lamp control system and uniformly allocated, and a maintenance terminal informs a maintenance worker to maintain or replace the storage battery, so that the intelligent management is facilitated;
3. according to the invention, the forenotice precaution module is arranged, the weather forecast interface is used for visiting the national weather bureau or other weather forecast websites to acquire the weather conditions of the area where the street lamp is located, the storage electric quantity and the electric energy consumption before rainy weather are intelligently regulated and controlled according to the weather forecast information, sufficient electric quantity is prepared for the forecasted rainy weather period, and the quantity of the illuminating street lamps can be regulated through the street lamp control system, so that all-weather illumination in rainy weather is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a block diagram of an overall system provided by the present invention;
FIG. 2 is a block diagram of a discharge control structure of the high-frequency discharge device according to the present invention;
FIG. 3 is a block diagram of a life estimation structure of the high-frequency discharging device according to the present invention;
FIG. 4 is a block diagram of a forenotice and prevention structure of the high-frequency discharge device provided by the present invention;
in the figure: the system comprises a solar component 1, an electric energy storage device 2, a storage battery 21, a solar controller 22, a high-frequency discharge device 3, an electric quantity detection module 31, an energy consumption electric quantity calculation module 32, a discharge control module 33, a light source database 34, a temperature detection module 35, a service life estimation module 36, a timing module 37, a forecast precaution module 38, a PWM controller 4, an LED lamp 5, a weather forecast interface 6, a street lamp control system 7 and a maintenance terminal 8.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1-2 of the specification, the high-frequency discharge system for the solar outdoor street lamp comprises a solar component 1, an electric energy storage device 2, a PWM controller 4 and an LED lamp 5, wherein the solar component 1 collects light energy and converts the light energy into electric energy to be stored in the electric energy storage device 2, voltage is output to the LED lamp 5 after being subjected to constant voltage control by the PWM controller 4, and illumination of the LED lamp 5 is realized, a high-frequency discharge device 3 is connected between the electric energy storage device 2 and the PWM controller 4, and the high-frequency discharge device 3 is used for detecting the stored electric quantity of the electric energy storage device 2, calculating the electric quantity required by the LED lamp 5, and controlling the discharge quantity by adopting a stepped discharge method;
the high-frequency discharging device 3 comprises an electric quantity detection module 31, an energy consumption electric quantity calculation module 32, a light source database 34 and a discharging control module 33;
the electric quantity detection module 31 is used for detecting the electric quantity stored in the electric energy storage device 2;
the energy consumption and electric quantity calculation module 32 is used for calculating the electric energy required by the LED lamp 5 during the illumination period according to the electric power and time of the LED lamp, and the energy consumption and electric quantity calculation module 32 is connected with the light source database 34 and is used for acquiring the basic parameters of the LED lamp 5 stored in the light source database 34;
the discharge control module 33 is for controlling the discharge amount of the high-frequency discharge device 3 by a stepped discharge method.
Further, the solar module 1 is specifically a solar panel, and is used for collecting solar energy.
Further, the electric energy storage device 2 comprises a solar controller 22 and a storage battery 21, wherein the solar controller 22 is used for converting the light energy collected by the solar module 1 into direct current electric energy to be stored in the storage battery 21.
Further, the storage batteries 21 are arranged into two groups, and the two groups of storage batteries 21 are connected with the solar controller 22 in parallel, wherein the storage batteries 21 are specifically lithium iron phosphate batteries.
Further, the electric quantity detection module 31 is an online capacity detection instrument for the storage battery 21, and may specifically be a BOSCH storage battery electric quantity sensor.
Further, the discharge control module 33 is connected with the PWM controller 4 and the solar controller 22, and is used for controlling the battery 21 to discharge in a stepped high frequency manner.
The implementation scenario is specifically as follows: when the LED lamp is used, the solar panel collects solar energy and converts the solar energy into direct current electric energy through the solar controller 22 to be stored in the storage battery 21, so that illumination is realized through the electric energy, the electric energy stored in the storage battery 21 is transmitted to the high-frequency discharge device 3 through the solar controller 22 to realize high-frequency discharge, and the PWM controller 4 controls the voltage to be constant to supply power to the LED lamp 5 so as to realize illumination;
when the LED lamp 5 is turned on, the electric quantity detection module 31 can detect the electric energy remaining in the storage battery 21 at this time, and meanwhile, according to the parameters such as electric power of the LED lamp 5 stored in the light source database 34, the energy consumption electric quantity calculation module 32 calculates the electric energy required by the LED lamp 5 in a unit time, and according to the electric energy, the discharge control module 33 collects the corresponding electric energy in the storage battery 21, and discharges the electric energy to the LED lamp 5 to generate brightness, so that the problem that the street lamp is powered all day long due to less electric quantity generated in rainy weather is solved, and illumination is generated;
and the high-frequency discharge device 3 is used, so that the frequency of the voltage which is also 3V can be increased to a higher multiple within the same time, the specific increase multiple is determined by the bearing range of a specific output light source, the finally generated illumination brightness is larger, and the illuminable range is larger.
When the discharge control module 33 is in operation, the discharge amount is specifically controlled by adopting a stepped discharge method:
parameters of the solar module 1:
the actual power does not take into account the added value of the back reflection: open-circuit voltage 4.8V, working voltage 4.32V, short-circuit current 9.6A, working current 9.2A and maximum output power 38.40W;
minimum power output: open circuit voltage 4.5V and minimum short circuit current 800 mA.
Parameters of the LED lamp 5:
adopting a plane light source, wherein the working voltage is 3V, the number of LEDs is 1186, the LEDs are all connected in parallel, the electric power is 3.5W, and the tolerance of the voltage value of each LED is as follows: +/-0.1V, and dark spots on the plane can be avoided when the current is small.
Discharge mode: the working voltage is 3V, the high-frequency discharge is 2K, and the duty ratio is 3: 1;
step discharge is adopted:
a first period of 2 hours, 2000mA (1000mA full work) discharged;
a second period of 4 hours, 2000mA (500mA half work) discharged;
a third period of 4 hours, 1200mA discharged (300mA 30% work);
or a third period of 2 hours, 800mA was discharged (200mA 20% full work).
Parameters of the storage battery 21:
the material is as follows: lithium iron phosphate battery, capacity: 8000mAhX2 groups, two groups in parallel, nominal voltage: 3.2V;
during charging: the charging time is designed to be 4.5 hours, the charging current of 8000mAh full charge is 1700mA, and in places without direct sunlight, the solar component 1 is enlarged, 2 or 3 are connected in parallel to increase the charging current;
on average, 2 batteries 21 were measured every two hours, charging the low voltage battery.
The high-frequency discharge device 3 is adopted, so that the limited electric quantity generated in the electric energy storage device 2 can be used to a greater extent, the phenomenon that the street lamp is powered off due to the fact that the electric quantity generated in rainy days is small is solved, the whole system can use the output of equal electric quantity to generate the effect of enlarging the irradiation range, the consumption of the electric quantity can be reasonably saved, and the high-frequency discharge device is mainly used for outdoor equipment of solar integrated street lamps and garden landscape lamps.
Referring to the attached drawing 3 of the specification, the high-frequency discharging device 3 further comprises a timing module 37, a temperature detection module 35 and a life estimation module 36, the temperature detection module 35 is used for detecting the operating temperature of the storage battery 21, the timing module 37 is used for detecting the charging and discharging time of the storage battery 21, the output ends of the timing module 37 and the temperature detection module 35 are connected with the input end of the life estimation module 36 and used for estimating the service life of the storage battery 21 through time and temperature detection numerical calculation, the high-frequency discharging device 3 is connected with the street lamp control system 7 through a wireless communication module, and the output end of the street lamp control system 7 is connected with the maintenance terminal 8.
The implementation scenario is specifically as follows: in the invention, during the whole operation period of the LED lamp 5, the temperature detection module 35 detects and records the operation temperature of the storage battery 21 in real time, the timing module 37 calculates the charging and discharging time of the storage battery 21, and records the high-frequency discharging time in detail, the service life estimation module 36 can calculate the wear degree of the storage battery 21 through the temperature and the time, then calculates the service life, and through the estimated value, when the storage battery 21 is seriously worn, the alarm information can be sent to the street lamp control system 7, the existing street lamps can be controlled and detected through the network by the street lamp control system 7, the street lamp control system 7 uniformly allocates maintenance personnel in related areas, the allocation information is sent to the maintenance terminal 8, and the maintenance personnel can maintain or replace the storage battery 21 after receiving the information, thereby facilitating the intelligent management.
Referring to fig. 4 of the specification, the high-frequency discharge device 3 further includes a forecast precaution module 38, the forecast precaution module 38 is connected to the weather forecast interface 6 through a 4G/5G network, and the weather forecast interface 6 is specifically an interface provided by the national weather bureau and other weather forecast websites for acquiring weather information.
Further, the output end of the forenotice precaution module 38 is connected with the discharge control module 33, the solar controller 22 and the street lamp control system 7, and is used for reasonably arranging electric energy storage, consumption and power supply modes according to weather conditions.
The implementation scenario is specifically as follows: according to the invention, the forenotice precaution module 38 is arranged, the weather forecast interface 6 provided by the national weather bureau and other weather forecast websites is connected by using a 4G/5G network, the national weather bureau or other weather forecast websites are visited, the weather condition of the area where the street lamp is located is obtained, the solar controller 22 is intelligently controlled through the weather forecast information, the storage condition of the electric energy storage device 2 on the electric energy is adjusted, the discharge control module 33 is controlled to realize the low energy consumption on the day, and sufficient electric quantity is prepared for the forecast rainy weather period;
in addition, when weather forecast shows that the duration of rainy weather is long and the electric quantity stored in the two storage batteries 21 is insufficient, information can be reported to the street lamp control system 7, the street lamp control system 7 adjusts the number of the lighting street lamps, and electric energy is saved.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. The utility model provides a high frequency discharge system for solar energy outdoor street lamp, includes solar energy component (1), electric energy storage device (2), PWM controller (4) and LED lamp (5), solar energy component (1) are collected light energy and are converted into the electric energy storage in electric energy storage device (2), and voltage exports LED lamp (5) after PWM controller (4) constant voltage control, realizes LED lamp (5) illumination, its characterized in that: a high-frequency discharge device (3) is connected between the electric energy storage device (2) and the PWM controller (4), and the high-frequency discharge device (3) is used for detecting the storage electric quantity of the electric energy storage device (2), calculating the electric quantity required by the LED lamp (5) and controlling the discharge quantity by adopting a stepped discharge method;
the high-frequency discharge device (3) comprises an electric quantity detection module (31), an energy consumption electric quantity calculation module (32), a light source database (34) and a discharge control module (33);
the electric quantity detection module (31) is used for detecting the electric quantity stored in the electric energy storage device (2);
the energy consumption and electricity quantity calculation module (32) is used for calculating the electric energy required by the LED lamp (5) during the illumination period according to the electric power and time of the LED lamp, and the energy consumption and electricity quantity calculation module (32) is connected with the light source database (34) and is used for acquiring basic parameters of the LED lamp (5) stored in the light source database (34);
the discharge control module (33) is used for controlling the discharge amount of the high-frequency discharge device (3) by adopting a stepped discharge method.
2. A high frequency discharge system for a solar outdoor street light according to claim 1, characterized in that: the solar component (1) is specifically a solar panel and is used for collecting solar energy.
3. A high frequency discharge system for a solar outdoor street light according to claim 1, characterized in that: the electric energy storage device (2) comprises a solar controller (22) and a storage battery (21), wherein the solar controller (22) is used for converting light energy collected by the solar component (1) into direct current electric energy to be stored in the storage battery (21).
4. A high frequency discharge system for a solar outdoor street light according to claim 3, characterized in that: the solar energy storage battery pack is characterized in that the storage batteries (21) are arranged into two groups, the two groups of storage batteries (21) are connected with the solar energy controller (22) in parallel, and the storage batteries (21) are specifically lithium iron phosphate batteries.
5. A high frequency discharge system for a solar outdoor street light according to claim 1, characterized in that: the electric quantity detection module (31) is an online storage battery (21) capacity detection instrument, and specifically can be a BOSCH storage battery electric quantity sensor.
6. A high frequency discharge system for a solar outdoor street light according to claim 4, characterized in that: the discharge control module (33) is connected with the PWM controller (4) and the solar controller (22) and is used for controlling the storage battery (21) to discharge in a stepped high-frequency mode.
7. A high frequency discharge system for a solar outdoor street light according to claim 6, characterized in that: high frequency discharge device (3) still include timing module (37), temperature detection module (35) and life-span estimation module (36), temperature detection module (35) are used for detecting the operating temperature of battery (21), and timing module (37) are used for detecting the charge-discharge time of battery (21), timing module (37) and temperature detection module (35) output are connected with life-span estimation module (36) input for through time and temperature detection numerical calculation estimation battery (21) life, high frequency discharge device (3) are through wireless communication module connection street lamp control system (7), maintenance terminal (8) are connected to street lamp control system (7) output.
8. A high frequency discharge system for a solar outdoor street light according to claim 7, characterized in that: the high-frequency discharge device (3) further comprises a forecast precaution module (38), the forecast precaution module (38) is connected with a weather forecast interface (6) through a 4G/5G network, and the weather forecast interface (6) is specifically an interface which is provided by a national weather bureau and other weather forecast websites and used for acquiring weather information.
9. A high frequency discharge system for a solar outdoor street light according to claim 8, characterized in that: the output end of the forenotice precaution module (38) is connected with the discharge control module (33), the solar controller (22) and the street lamp control system (7) and used for reasonably arranging electric energy storage, consumption and power supply modes according to weather conditions.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115076645A (en) * | 2022-06-15 | 2022-09-20 | 江西瑞宇新能源科技有限公司 | Solar street lamp that non-induction formula was tracked |
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