CN210517868U - Energy storage power supply - Google Patents
Energy storage power supply Download PDFInfo
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- CN210517868U CN210517868U CN201921154699.1U CN201921154699U CN210517868U CN 210517868 U CN210517868 U CN 210517868U CN 201921154699 U CN201921154699 U CN 201921154699U CN 210517868 U CN210517868 U CN 210517868U
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Abstract
The application discloses energy storage power supply, including input interface, first output interface, second output interface, first switch unit, energy storage unit, dc-to-ac converter, second switch unit, main control unit and third switch unit. The first switch unit is electrically connected between the input interface and the first output interface and is automatically conducted when the first load is connected to the first output interface. The inverter is electrically connected with the energy storage unit and is electrically connected with the second output interface through the second switch unit. A first detection pin of the main control unit is electrically connected between the first switch unit and the first output interface; a second detection pin of the main control unit is electrically connected with the input interface through a third switch unit; the third switching unit is automatically turned on when the second load is connected to the second output interface; when the main control unit judges that the second output interface is connected with the load, the main control unit controls the second switch unit to be conducted so that the energy storage unit supplies power to the load connected with the second output interface. The power supply efficiency can be improved.
Description
Technical Field
The application relates to the technical field of energy storage application, in particular to an energy storage power supply.
Background
The maximum power consumption of the existing household appliances (refrigerators, washing machines and the like) or commercial appliances (coffee makers, ice frying machines and the like) generally does not exceed 2200w-3520w so as to meet the power supply requirement of the commercial power. However, when the total power of a plurality of electrical appliances exceeds the maximum power provided by the mains supply, the electrical appliances cannot work simultaneously, and only different electrical appliances can be supplied with power in a time-sharing manner, which results in low power supply efficiency.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application discloses an energy storage power supply to solve the problem.
The embodiment of the application discloses energy storage power supply includes:
the input interface is used for electrically connecting commercial power;
the first output interface and the second output interface are respectively used for being electrically connected with a first load and a second load;
the first switch unit is electrically connected between the input interface and the first output interface, and is automatically conducted when the first load is connected to the first output interface;
the inverter is electrically connected with the energy storage unit and is electrically connected with the second output interface through the second switch unit, and the inverter is used for converting direct current output by the energy storage unit into alternating current; and
the circuit comprises a main control unit and a third switch unit, wherein the main control unit comprises a first detection pin, a second detection pin and a first control pin; the first detection pin is electrically connected between the first switch unit and the first output interface, and the main control unit detects a first signal through the first detection pin and judges whether the first output interface is connected with the first load according to the first signal; the second detection pin is electrically connected with the input interface through the third switch unit, the main control unit detects a second signal through the second detection pin, and judges whether the second output interface is connected with the second load according to the second signal; wherein the third switching unit is automatically turned on when the second load is connected to the second output interface; the first control pin is electrically connected with the second switch unit, and the main control unit controls the second switch unit to be conducted through the first control pin when judging that the second output interface is connected with the second load, so that the energy storage unit supplies power to the load connected with the second output interface.
The energy storage power supply comprises the energy storage unit and the inverter, so that the working voltage can be provided for the first load through the energy storage unit and the inverter while the commercial power provides the working voltage for the second load, and therefore the first load and the second load can still work simultaneously under the condition that the power of the first load and the power of the second load are greater than the power of the commercial power, and therefore the working efficiency of the loads is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic block diagram of an energy storage power supply in an embodiment of the present application.
Fig. 2 is a schematic block diagram of an energy storage power supply in another embodiment of the present application.
Fig. 3 is a schematic block diagram of an energy storage power supply in yet another embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The terminology used in the following embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" 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 listed items. For example, a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone.
Referring to fig. 1, fig. 1 is a schematic block diagram of an energy storage power supply according to an embodiment of the present disclosure. The energy storage power supply 100 is electrically connected to the utility power 200, the first load 300 and the second load 400. In this embodiment, the energy storage power supply 100 includes an input interface 101, a first output interface 102, and a second output interface 103. The energy storage power supply 100 is electrically connected to the commercial power 200 through the input interface 101, and the energy storage power supply 100 is further electrically connected to the first load 300 and the second load 400 through the first output interface 102 and the second output interface 103, respectively. Wherein a sum of the power of the first load 300 and the second load 400 is greater than the power of the commercial power 200.
In some embodiments, the energy storage power supply 100 further includes a first switching unit K1, an energy storage unit 10, an inverter 20, a second switching unit K2, a main control unit 30, and a third switching unit K3. The first switch unit K1 is electrically connected between the input interface 101 and the first output interface 102, and is configured to establish or break an electrical connection between the input interface 101 and the first output interface 102. Wherein the first switching unit K1 is automatically turned on when the first load 300 is connected to the first output interface 102. When the first switch unit K1 is in a conducting state, the utility power 200 may provide an operating voltage for the first load 300 to operate the first load 300.
The energy storage unit 10 is used for storing and providing electric energy. Specifically, the energy storage unit 10 includes, but is not limited to, a lead-acid battery or a lithium battery, etc., and is not limited thereto. It can be understood that, in order to increase the electric energy output by the energy storage unit 10, the battery pack included in the energy storage unit 10 is composed of a plurality of single batteries connected in series and in parallel. Obviously, the number of the unit cells included in the battery pack may be set according to specific design requirements, and is not limited herein.
The inverter 20 is electrically connected to the energy storage unit 10, and is configured to convert the direct current output by the energy storage unit 10 into an alternating current.
The second switching unit K2 is electrically connected between the inverter 20 and the second output interface 103, and is used for establishing or breaking an electrical connection between the inverter 20 and the second output interface 103. When the second switching unit K2 is in a conducting state, the energy storage unit 10 may provide an operating voltage to the second load 400 through the inverter 20, so as to operate the second load 400.
In some embodiments, the first output interface 102 and the second output interface 103 have different interface types, so that different types of loads can be prevented from being connected, and thus only the load matched with the first output interface 102 preferentially uses the commercial power 200. In other embodiments, the interface types of the first output interface 102 and the second output interface 103 may also be the same, so that the user is free to choose whether to use the utility power 200 or the energy storage unit 10 preferentially.
The main control unit 30 includes a first test pin P1, a second test pin P2, and a first control pin P3. The first detection pin P1 is electrically connected between the first switch unit K1 and the first output interface 102, and the main control unit 30 detects a first signal through the first detection pin P1 and determines whether the first output interface 102 is connected to the first load 300 according to the first signal. The second test pin P2 is electrically connected to the input interface 101 through the third switch unit K3, and the main control unit 30 detects a second signal through the second test pin P2 and determines whether the second output interface 103 is connected to the second load 400 according to the second signal. Wherein the third switching unit K3 is automatically turned on when the second load 400 is connected to the second output interface 103.
The first control pin P3 is electrically connected to the second switch unit K2, and the main control unit 30 controls the second switch unit K2 to be turned on or off through the first control pin P3. When the main control unit 30 determines that the second output interface 103 is connected to the second load 400, the second switch unit K2 is controlled to be turned on by the first control pin P3, so that the energy storage unit 10 supplies power to the second load 400 connected to the second output interface 103 through the inverter 20. The main control unit 30 is further configured to control the second switch unit K2 to be turned off through the first control pin P3 when it is determined that the second output interface 103 is not connected to a second load, so that the energy storage unit 10 stops providing a working voltage for the second load 400.
In some embodiments, the first switch unit K1 is controlled by the first load 300, that is, the first switch unit K1 is automatically in a conducting state when the first load 300 is connected to the first output interface 102. At this time, the first signal detected by the first detection pin P1 is converted from a low level signal to a high level signal. Therefore, in this embodiment, when the first signal detected by the first detection pin P1 changes from low level to high level, the main control unit 30 determines that the first load 300 is connected to the first output interface 102, and at this time, the commercial power 200 may provide an operating voltage for the first load 300.
In this embodiment, the power of the first load 300 is smaller than the power of the utility power 200. When the first load 300 is connected to the first output interface 102, the first switch unit K1 is closed, so that the utility power 200 can continuously supply power to the first load 300 after the first load 300 is connected to the first output interface 102, and therefore, when a user needs to use the first load 300, the first load 300 can be directly started to work, thereby improving the working efficiency of the energy storage power supply 100. In addition, the frequency of use of the energy storage unit 10 can be reduced, and the service life of the energy storage unit 10 can be prolonged.
In some embodiments, the third switching unit K3 is controlled by the second load 400, i.e. the third switching unit K3 is automatically in a conducting state when the second load 400 is connected with the second output interface 103. At this time, the second signal detected by the second detection pin P2 is converted from a low level signal to a high level signal. Therefore, in this embodiment, when the second signal detected by the second detection pin P2 changes from low level to high level, the main control unit 30 determines that the second load 400 is connected to the second output interface 103. In this embodiment, the power of the second load is greater than the power of the utility power 200.
The energy storage power supply 100 provided in the embodiment of the application includes the energy storage unit 10 and the inverter 20, and further, the commercial power 200 can provide the working voltage for the first load 300 and simultaneously provide the working voltage for the second load 400 through the energy storage unit 10 and the inverter 20, so that the first load 300 and the second load 400 can still work simultaneously under the condition that the power of the first load 300 and the power of the second load 400 are greater than the power of the commercial power 200, thereby improving the working efficiency of the loads.
Referring to fig. 2, fig. 2 is a schematic block diagram of an energy storage power supply according to another embodiment of the present application. In order to facilitate charging of the energy storage unit 10 for the convenience of the user, as shown in fig. 2, in some embodiments, the energy storage power supply 100 further includes a fourth switching unit K4. The fourth switching unit K4 is electrically connected between the input interface 101 and the inverter 20, and is controlled by the main control unit 30. Specifically, the master control unit 30 further includes a second control pin P4, and the master control unit 30 controls the fourth switch unit K4 to be turned on or off through the second control pin P4. When the fourth switching unit K4 is in a conducting state, the energy storage unit 10 may be charged by the commercial power through the inverter 20. In the present embodiment, inverter 20 is a bidirectional inverter, that is, inverter 20 is also used for converting the ac power output by utility power 200 into dc power to charge the energy storage unit.
In this embodiment, when the first load 300 is connected to the first output interface 102 and/or the second load 400 is connected to the second output interface 103, the main control unit 30 controls the fourth switching unit K4 to be in a cut-off state, so as to prohibit the commercial power 200 from charging the energy storage unit 10. When the first load 300 is not connected to the first output interface 102 and the second load 400 is not connected to the second output interface 103, the main control unit 30 controls the fourth switch unit K4 to be turned on and controls the second switch unit K2 to be turned off, so that the utility power 200 can charge the energy storage unit 10. Thus, when the energy storage power supply 100 is in an idle state, the commercial power 200 can charge the energy storage unit 10 without an additional charger, thereby facilitating the use of the user and saving the cost.
Referring to fig. 3, in some embodiments, in order to protect the energy storage unit 10 from the over-charge or over-discharge of the energy storage unit 10, the energy storage power supply 100 further includes a fifth switching unit K5. The fifth switching unit K5 is electrically connected between the energy storage unit 10 and the inverter 20 and controlled by the main control unit 30. When the energy storage unit 10 is in an abnormal state, the main control unit 30 controls the fifth switch unit K5 to be turned off to disconnect the electrical connection between the energy storage unit 10 and the inverter 20, so as to prevent the utility power 200 from charging the energy storage unit 10 or prevent the energy storage unit 20 from supplying power to the second load 400 connected to the second output interface 103. The abnormal state of the energy storage unit 10 includes at least one of an overvoltage state, an undervoltage state, an overheat state, or an overcurrent state of the energy storage unit 10.
In one embodiment, the energy storage unit 10 further includes a power supply assembly 11 and a battery voltage detection circuit 12. Wherein the power supply assembly 11 includes a plurality of battery modules 1111. The main control unit 30 is also electrically connected to the battery voltage detection circuit 12. In the present embodiment, the battery voltage detection circuit 12 is electrically connected to each of the battery module groups 111, and detects the remaining voltage of each of the battery module groups 111 in real time.
When the energy storage unit 10 is in a charging state, if the voltage of at least one of the battery modules 111 is higher than a first preset voltage, the main control unit 30 controls the fifth switch unit K5 to be turned off to disconnect the electrical connection between the energy storage unit 10 and the inverter 20, so as to control the utility power supply 200 to stop charging the energy storage unit 10, thereby preventing the battery module 111 from being overcharged, and thus protecting the power supply assembly 11.
When the energy storage unit 10 is in a discharging state, if the voltage of at least one of the battery modules 111 is lower than a second preset voltage, the main control unit 30 controls the fifth switch unit K5 to be turned off to disconnect the electrical connection between the energy storage unit 10 and the inverter 20, so as to control the energy storage unit 10 to stop supplying power to the second load 400 connected to the second output interface 103, thereby preventing the battery module 111 from being over-discharged, and thus protecting the power supply assembly 11. In this embodiment, the second predetermined voltage is smaller than the first predetermined voltage.
It is understood that the first preset voltage is a charge cut-off voltage, and the second preset voltage is a discharge cut-off voltage. The first and second preset voltages may be determined according to the material and characteristics of the battery module 111, and are not limited herein.
In some embodiments, the energy storage unit 10 may further include a battery temperature detection circuit 14 and a battery equalization circuit 15, where the battery temperature detection circuit 14 is configured to detect the temperature of each group of battery modules 111. The battery equalization circuit 15 is electrically connected to each group of battery modules 111, the main control unit 30 is electrically connected to the battery temperature detection circuit 14 and the battery equalization circuit 15, respectively, and the main control unit 30 is further configured to control the working state of each group of battery modules 111 through the battery equalization circuit 15 in an equalization manner according to the temperature of each group of battery modules 111, so that some battery modules 111 can be temporarily turned off through the equalization control of the battery equalization circuit 15 when the temperature of some battery modules 111 is too high, so as to avoid affecting the use performance of the power supply assembly 11.
For example, the main control unit 30 may determine, according to one or more parameters of the temperature and the remaining voltage value of each group of battery modules 111, an unbalanced battery and an unsafe or incorrect operating environment, such as an overvoltage, an undervoltage, an overheat, and the like, and balance-control the operating states of each group of battery modules 111 of the power supply assembly 11 through the battery balancing circuit 15, such as turning on some rechargeable batteries with lower temperature and/or higher voltage, and turning off some rechargeable batteries with higher temperature and/or lower voltage, so as to perform controllable protective management on the power supply assembly 11, and ensure safe and reliable use of the power supply assembly 11.
It is understood that the battery temperature detection circuit 14 may be disposed on the same circuit substrate as the respective sets of battery modules 111, so as to more accurately detect the temperature of the respective battery modules. The specific circuit structure of the battery temperature detection circuit 14 is not limited in the embodiment of the present application, as long as the battery temperature detection circuit 14 can detect the temperature of each set of battery modules 111 respectively. For example, the battery temperature detection circuit 14 may include a plurality of temperature detection sub-circuits, each for detecting the temperature of one or more groups of battery modules 111. It is understood that the number of charging sub-circuits may also correspond to the number of battery modules 111, in order to specifically detect the respective temperature of the respective battery module.
The specific circuit structure of the battery equalization circuit 15 is not limited in the embodiment of the present application, as long as the battery equalization circuit 15 can control the operating states of the battery modules 111 respectively. For example, the battery equalization circuit 15 may include a plurality of equalization sub-circuits, each for controlling the operating status of one or more groups of battery modules 111.
It is understood that, in order to make the energy storage unit 10 compact and reduce the volume of the energy storage power supply 100, the battery voltage detection circuit 12, the battery temperature detection circuit 14 and the battery equalization circuit 15 may be integrated on the same circuit substrate 16.
In the present embodiment, the first to fifth switching units K1 to K5 are all electronic switches, for example, transistors, thyristors, field effect transistors, relays, and the like.
In this embodiment, the main control unit 30 may be a single chip microcomputer, a Micro Control Unit (MCU), or the like. The main control unit 30 may include a plurality of signal acquisition ports, a communication port, a plurality of control ports, and the like, wherein the main control unit 30 may be electrically connected to the battery voltage detection circuit 12, the battery temperature detection circuit 14, and the like through the plurality of signal acquisition ports, respectively, so as to obtain a plurality of electrical information of the energy storage power source 100, for example, the remaining voltage and the temperature of each group of battery modules 111 of the power supply assembly 20. The main control unit 30 may also be electrically connected to each switch unit, the battery balancing circuit 15, and the like through a plurality of control ports thereof, so as to correspondingly control the corresponding electronic device or circuit structure according to different control requirements.
The present application is described in detail with reference to the above embodiments, but these are not to be construed as limitations of the present application. The protection scope of the present application is not limited to the above embodiments, but equivalent modifications or changes made by those skilled in the art according to the disclosure of the present application should be included in the protection scope of the claims.
Claims (10)
1. An energy storage power supply, comprising:
the input interface is used for electrically connecting commercial power;
the first output interface and the second output interface are respectively used for being electrically connected with a first load and a second load;
the first switch unit is electrically connected between the input interface and the first output interface, and is automatically conducted when the first load is connected to the first output interface;
the inverter is electrically connected with the energy storage unit and is electrically connected with the second output interface through the second switch unit, and the inverter is used for converting direct current output by the energy storage unit into alternating current; and
the circuit comprises a main control unit and a third switch unit, wherein the main control unit comprises a first detection pin, a second detection pin and a first control pin; the first detection pin is electrically connected between the first switch unit and the first output interface, and the main control unit detects a first signal through the first detection pin and judges whether the first output interface is connected with the first load according to the first signal; the second detection pin is electrically connected with the input interface through the third switch unit, the main control unit detects a second signal through the second detection pin, and judges whether the second output interface is connected with the second load according to the second signal; wherein the third switching unit is automatically turned on when the second load is connected to the second output interface; the first control pin is electrically connected with the second switch unit, and the main control unit controls the second switch unit to be conducted through the first control pin when judging that the second output interface is connected with the second load, so that the energy storage unit supplies power for the second load.
2. The energy storage power supply according to claim 1, wherein the main control unit is further configured to control the second switch unit to be turned off through the first control pin when it is determined that the second output interface is not connected to the second load, so that the energy storage unit stops providing the operating voltage for the second load.
3. The energy-storing power supply according to claim 1, wherein the main control unit determines that the second output interface is connected to the second load when the second signal changes from a low level to a high-low level.
4. The energy-storing power supply according to claim 1, wherein the main control unit determines that the first output interface is connected to the first load when the first signal changes from a low level to a high-low level.
5. The energy storage power supply according to claim 1, further comprising a fourth switching unit electrically connected between the input interface and the inverter; the main control unit further comprises a second control pin, and the main control unit controls the fourth switch unit to be switched on or switched off through the second control pin.
6. The energy storage power supply according to claim 5, wherein the main control unit is further configured to control the fourth switching unit to be turned off when it is detected that the first output interface is connected to the first load and/or the second output interface is connected to the second load, so as to control the commercial power to stop charging the energy storage unit.
7. The energy storage power supply according to claim 5, wherein the main control unit is further configured to control the fourth switching unit to be turned on and control the second switching unit to be turned off when the first output interface is not connected to the first load and the second output interface is not connected to the second load, so that the commercial power charges the energy storage unit.
8. The energy storage power supply according to claim 5, further comprising a fifth switching unit; the fifth switching unit is electrically connected between the energy storage unit and the inverter; the main control unit is further used for controlling the fifth switch unit to be cut off when the energy storage unit is in an abnormal state so as to disconnect the electric connection between the energy storage unit and the inverter and prevent the mains supply from charging the energy storage unit or the energy storage unit from supplying power to the second load connected with the second output interface.
9. The energy storage power supply according to claim 8, wherein the energy storage unit comprises a power supply assembly and a battery voltage detection circuit; wherein the power supply assembly comprises a plurality of battery modules;
the battery voltage detection circuit is electrically connected with each group of battery modules and is used for detecting the residual voltage of each group of battery modules in real time;
when the power supply assembly is in a charging state, the main control unit is further used for controlling the fifth switch unit to be turned off when the voltage of at least one battery module is higher than a first preset voltage so as to disconnect the electrical connection between the energy storage unit and the inverter and control the commercial power to stop charging the energy storage unit; or, when the power supply assembly is in a discharging state, the main control unit is further configured to control the fifth switching unit to be turned off when the voltage of at least one of the battery modules is lower than a second preset voltage, so as to disconnect the electrical connection between the energy storage unit and the inverter, and to control the energy storage unit to stop supplying power to the second load connected to the second output interface; wherein the first preset voltage is greater than the second preset voltage.
10. The energy storage power supply of claim 8, further comprising:
the battery temperature detection circuit is used for detecting the temperature of each group of battery modules; and
the battery equalization circuit is electrically connected with each group of battery modules;
the main control unit is electrically connected with the battery temperature detection circuit and the battery equalization circuit respectively, and is further used for controlling the working state of each group of battery modules in an equalization mode through the battery equalization circuit according to the temperature of each group of battery modules.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921154699.1U CN210517868U (en) | 2019-07-22 | 2019-07-22 | Energy storage power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921154699.1U CN210517868U (en) | 2019-07-22 | 2019-07-22 | Energy storage power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445230A (en) * | 2019-07-22 | 2019-11-12 | 深圳市华思旭科技有限公司 | Accumulation power supply |
| CN113690961A (en) * | 2021-07-06 | 2021-11-23 | 美律电子(深圳)有限公司 | Energy storage device and power supply method thereof |
-
2019
- 2019-07-22 CN CN201921154699.1U patent/CN210517868U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445230A (en) * | 2019-07-22 | 2019-11-12 | 深圳市华思旭科技有限公司 | Accumulation power supply |
| CN113690961A (en) * | 2021-07-06 | 2021-11-23 | 美律电子(深圳)有限公司 | Energy storage device and power supply method thereof |
| US20230008320A1 (en) * | 2021-07-06 | 2023-01-12 | Merry Electronics(Shenzhen) Co., Ltd. | Energy storage device and method thereof for supplying power |
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Effective date of registration: 20210423 Address after: 516000 No. 333 Xinhua Avenue, Tongqiao Town, Zhongkai high tech Zone, Huizhou City, Guangdong Province (office only) Patentee after: HUIZHOU KAERKU TECHNOLOGY Co.,Ltd. Address before: 518000 Tongsheng Community, Dalang Street, Longhua District, Shenzhen City, Guangdong Province, 2 buildings 202 Patentee before: SHENZHEN CARKU TECHNOLOGY Co.,Ltd. |
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