CN210839035U - Energy storage power supply - Google Patents
Energy storage power supply Download PDFInfo
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- CN210839035U CN210839035U CN201921157984.9U CN201921157984U CN210839035U CN 210839035 U CN210839035 U CN 210839035U CN 201921157984 U CN201921157984 U CN 201921157984U CN 210839035 U CN210839035 U CN 210839035U
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Abstract
The application discloses energy storage power supply includes input interface, first output interface, second output interface main control unit, energy storage unit and first discharge switch and second discharge switch. The main control unit comprises a first detection pin electrically connected to the first output interface and a second detection pin electrically connected to the second output interface. The first discharge switch is electrically connected between the input interface and the first output interface. The second discharge switch is electrically connected between the energy storage unit and the second output interface. The main control unit is also electrically connected with the first discharge switch and the second discharge switch respectively. When the main control unit judges that the first output interface is connected with the alternating current load, the main control unit controls the first discharge switch to be conducted so that the commercial power supplies power for the alternating current load. And the main control unit also controls the second discharge switch to be conducted when judging that the second output interface is connected with the direct current load, so that the energy storage unit supplies power for the direct current load. The application provides an energy storage power supply can be for direct current load and alternating current load power supply simultaneously, has improved power supply efficiency.
Description
Technical Field
The application relates to the technical field of energy storage application, in particular to an energy storage power supply.
Background
Most of the existing household appliances (refrigerators, washing machines and the like) are directly powered by mains supply, and the power of the mains supply generally does not exceed 2200w-3520w, so that the power of the household appliances is limited. In addition, since the commercial power provides ac power, a conversion circuit is required to be added to the load (microwave oven, motor) requiring dc power supply to convert the ac power outputted from the commercial power into dc power for reuse, thereby increasing the production cost and complexity of the household appliance.
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 is used for being electrically connected with an alternating current load;
the second output interface is used for being electrically connected with the direct current load;
the main control unit comprises a first detection pin electrically connected with the first output interface and a second detection pin electrically connected with the second output interface;
the first discharge switch is electrically connected between the input interface and the first output interface; and
the second discharge switch is electrically connected between the energy storage unit and the second output interface;
the main control unit is also electrically connected with the first discharge switch and the second discharge switch respectively;
the main control unit detects a first signal through the first detection pin, judges whether the first output interface is connected with the alternating current load or not according to the first signal, and controls the first discharge switch to be conducted when the first output interface is judged to be connected with the alternating current load, so that the commercial power supplies power to the alternating current load;
the main control unit further detects a second signal through the second detection pin, judges whether the second output interface is connected with the direct current load according to the second signal, and controls the second discharge switch to be conducted when the second output interface is judged to be connected with the direct current load, so that the energy storage unit supplies power to the direct current load.
The energy storage power supply comprises the first output interface, the second output interface and the energy storage unit, so that the power supply can be simultaneously performed for the alternating current load and the direct current load, the power of the direct current load is not limited, the power supply efficiency is improved, and convenience is brought to users.
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 the energy storage unit in fig. 1.
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 commercial power 200, the ac load 300, and the dc load 400, and is configured to receive power supplied by the commercial power 200 and supply power to the ac load 300 and the dc 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 ac load 300 and the dc load 400 through the first output interface 102 and the second output interface 103, respectively.
In some embodiments, the energy storage power supply 100 further includes an energy storage unit 10, a main control unit 20, a first detection switch K1, a first discharge switch K2, a second detection switch K3, and a second discharge switch K4.
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 main control unit 20 includes a first sensing pin P1 and a second sensing pin P3. The first detection pin P1 is electrically connected to the first output interface 102 through the first detection switch K1. Wherein the first detection switch K1 is automatically turned on when the ac load 300 is connected to the first output interface 102. The main control unit 20 detects a first signal through the first detection pin P1, and determines whether the first output interface 102 is connected to the ac load 300 according to the first signal.
The first discharging switch K2 is electrically connected between the input interface 101 and the first output interface 102, and is used for establishing or breaking an electrical connection between the input interface 101 and the first output interface 102. The main control unit 20 is electrically connected to the first discharge switch K2 to control the first discharge switch K2 to be turned on or off. Specifically, the main control unit 20 further includes a first control pin P2, and the main control unit 20 controls the first discharge switch K2 to be turned on or off through the first control pin P2. When the main control unit 20 determines that the first output interface 102 is connected to the ac load 300, the first control pin P2 controls the first discharge switch K2 to be turned on, so that the utility power 200 supplies power to the ac load 300 connected to the first output interface 102. The main control unit 20 is further configured to control the first discharging switch K2 to be turned off through the first control pin P2 when it is determined that the first output interface 102 is not connected to the ac load 300, so as to disconnect the electrical connection between the utility power 200 and the first output interface 102.
The second detection pin P3 is electrically connected to the second output interface 103 through the second detection switch K3. Wherein the second detection switch K3 is automatically turned on when the dc load 400 is connected to the second output interface 103. The main control unit 20 detects a second signal through the second detection pin P3, and determines whether the second output interface 103 is connected to the dc load 400 according to the second signal.
The second discharge switch K4 is electrically connected between the energy storage unit 10 and the second output interface 103, and is used for establishing or breaking an electrical connection between the energy storage unit 10 and the second output interface 103. The main control unit 20 is electrically connected to the second discharge switch K4 to control the second discharge switch K4 to be turned on or off. Specifically, the main control unit 20 further includes a second control pin P4, and the main control unit 20 further controls the second discharge switch K4 to be turned on or off through the second control pin P4. The main control unit 20 is further configured to control the second discharging switch K4 to be turned on through the second control pin P4 when it is determined that the second output interface 103 is connected to the dc load 400, so that the energy storage unit 10 supplies power to the dc load 400 connected to the second output interface 103. The main control unit 20 is further configured to control the second discharging switch K4 to be turned off through the second control pin P4 when it is determined that the second output interface 103 is not connected to the dc load 400, so as to disconnect the electrical connection between the energy storage unit 10 and the second output interface 103.
In some embodiments, the first output interface 102 and the second output interface 103 have different interface types, for example, only an ac load can be plugged into the first output interface 102, and only a dc load can be plugged into the second output interface 103, so that different types of loads can be prevented from being damaged due to plugging into a wrong interface.
In some embodiments, when the first signal detected by the first detection pin P1 changes from high level to low level, the main control unit 20 determines that the ac load 300 is connected to the first output interface 102. For example, the first output interface 102 may include a plurality of pins, one of which is connected to the control terminal of the first detection switch K1, and the other of which is connected to ground and to the connection terminal of the first detection switch K1. When the ac load 300 is not connected to the first output interface 102, the first detection switch K1 is in an off state, and at this time, the first detection pin P1 is in a high level state rather than floating; when the ac load 300 is connected to the first output interface 102, the pin connected to the control terminal of the first detection switch K1 is grounded due to being connected to the ground pin of the ac load 300, so that the first detection switch K1 is turned on, and at this time, the first detection pin P1 detects a low level signal due to being grounded.
Similarly, when the second signal detected by the second detection pin P3 changes from high level to low level, the main control unit 20 determines that the dc load 400 is connected to the second output interface 103. In this embodiment, the power of the ac load is smaller than the power of the utility power 200. The power of the dc load 400 may be greater than the power of the utility power 200 or less than the power of the utility power 200, which is not limited in this application.
It is understood that in some embodiments, the first detection switch K1 and the second detection switch K3 may be omitted. For example, the first detection pin P1 may be directly connected to one detection pin of the first output interface 102, and when the ac load 300 is connected to the first output interface 102, the detection pin is in a low state due to being connected to the ground of the ac load 300, and when the ac load 300 is not connected to the first output interface 102, the detection pin is in a high state due to being floating two. Obviously, the detection mode of the first signal and the second signal is not limited to this.
The energy storage power supply 100 provided by the embodiment of the application includes the first output interface 102, the second output interface 103 and the energy storage unit 10, and further can supply power for the ac load and the dc load at the same time, and the power of the dc load is not limited, so that the power supply efficiency is improved, and the use by a user is facilitated.
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. 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 charger 30 and a charging control switch K5. The charger 30 is electrically connected to the input interface 101, and the charging control switch K5 is electrically connected between the charger 30 and the energy storage unit 10 and to the main control unit 20. Specifically, the main control unit 20 further includes a third control pin P5, and the main control unit 20 controls the charging control switch K5 to be turned on or off through the third control pin P5. When the charging control switch K5 is in the on state, the commercial power 200 can charge the energy storage unit 10 through the charger 30. The charger 30 is configured to convert ac power output by the utility power 200 into dc power to charge the energy storage unit 10.
In this embodiment, when the ac load 300 is connected to the first output interface 102 and/or the dc load 400 is connected to the second output interface 103, the main control unit 20 controls the charging control switch K5 to be in a cut-off state, so as to prohibit the commercial power 200 from charging the energy storage unit 10. When the ac load 300 is not connected to the first output interface 102 and the dc load 400 is not connected to the second output interface 103, the main control unit 20 controls the charging control switch K5 to be turned on and controls the second discharging switch K4 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 additional operations, thereby facilitating the use of the user.
In some embodiments, in order to facilitate control over the energy storage power supply 100 to facilitate development of the energy storage power supply 100 towards intelligence, the energy storage power supply 100 further includes a communication unit 30 electrically connected to the main control unit 20. When the main control unit 20 further communicates with a mobile terminal (not shown) through the communication unit 30. When the energy storage unit 10 is in a charging state, the main control unit 20 further controls the charging control switch K5 to be turned off according to a first instruction sent by the mobile terminal (such as a mobile phone) and received by the communication unit 30, so as to prohibit the commercial power 200 from continuously charging the energy storage unit 10.
When the energy storage unit 10 is in the discharging state, the main control unit 20 further controls the second discharging switch K4 to be turned off according to a second instruction sent by the mobile terminal and received by the communication unit 30, so as to prohibit the energy storage unit 10 from continuing to supply power to the dc load 400. In this way, the user can remotely control whether the energy storage unit 10 stops charging or whether to stop discharging through the mobile terminal.
Referring to fig. 3, in an 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 111. The main control unit 20 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 20 controls the charging control switch 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 20 controls the charging control switch 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 dc 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.
The embodiment of the present application does not limit the specific circuit structure of the battery voltage detection circuit 12, as long as the battery voltage detection circuit 12 can detect the voltages of the battery modules 111 of each group respectively. For example, the battery voltage detection circuit 12 may include a plurality of voltage detection sub-circuits, each for detecting the voltage of one or more groups of battery modules 111, so as to perform corresponding voltage detection on the corresponding battery module in a targeted manner.
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 20 is electrically connected to the battery temperature detection circuit 14 and the battery equalization circuit 15, respectively, and the main control unit 20 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 20 may determine an unbalanced battery and an unsafe or incorrect operating environment, such as an overvoltage, an undervoltage, an overheat, etc., according to one or more parameters of the temperature and the remaining voltage value of each group of battery modules 111, 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, thereby ensuring 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, so as to perform corresponding temperature detection on the corresponding battery module in a targeted manner.
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 110.
In the present embodiment, the first detection switch K1, the second detection switch K3, the first discharge switch K2, the second discharge switch K4, and the charge control switch K5 are all electronic switches, such as transistors, thyristors, fets, and relays.
In this embodiment, the main control unit 20 may be a single chip microcomputer, a Micro Control Unit (MCU), or the like. The main control unit 20 may include a plurality of signal acquisition ports, a communication port, a plurality of control ports, and the like, wherein the main control unit 20 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 supply 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 20 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 corresponding electronic devices or circuit structures according to different control requirements.
Therefore, in some embodiments, when the energy storage unit 10 is in a charging state, the main control unit 20 is further configured to control the charging control switch K5 to be turned off to prohibit the utility power 200 from charging the energy storage unit 10 when the energy storage unit 10 is in an abnormal state. When the energy storage unit 10 is in the discharging state, the main control unit 20 is further configured to control the second discharging switch K4 to be turned off when the energy storage unit 10 is in the abnormal state, so as to prohibit the energy storage unit 10 from supplying power to the dc 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 addition, the main control unit 20 may further send the battery state information of the energy storage unit 10 to the mobile terminal through the communication unit 30 for the user to refer to. When the state information of the energy storage unit 10 is abnormal, a prompt message can be sent to the mobile terminal to remind a user to maintain the energy storage unit 10.
The battery state information of the energy storage unit 10 includes at least one of voltage information, current information, or temperature information of the energy storage unit 10. The prompt message comprises at least one of pictures and words and sounds.
In this embodiment, the communication unit is a GPRS (General Packet Radio Service) module.
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 is used for being electrically connected with an alternating current load;
the second output interface is used for being electrically connected with the direct current load;
the main control unit comprises a first detection pin electrically connected with the first output interface and a second detection pin electrically connected with the second output interface;
the first discharge switch is electrically connected between the input interface and the first output interface; and
the second discharge switch is electrically connected between the energy storage unit and the second output interface;
the main control unit is also electrically connected with the first discharge switch and the second discharge switch respectively;
the main control unit detects a first signal through the first detection pin, judges whether the first output interface is connected with the alternating current load or not according to the first signal, and controls the first discharge switch to be conducted when the first output interface is judged to be connected with the alternating current load, so that the commercial power supplies power to the alternating current load;
the main control unit further detects a second signal through the second detection pin, judges whether the second output interface is connected with the direct current load according to the second signal, and controls the second discharge switch to be conducted when the second output interface is judged to be connected with the direct current load, so that the energy storage unit supplies power to the direct current load.
2. The energy storage power supply of claim 1, wherein the first output interface and the second output interface are of different types.
3. The energy storage power supply according to claim 1, further comprising a first detection switch electrically connected between the first detection pin and the first output interface; wherein the first detection switch is automatically turned on when the AC load is connected to the first output interface; and when detecting that the first signal is changed from a high-level signal to a low-level signal, the main control unit determines that the first output interface is connected with the alternating current load.
4. The energy storage power supply of claim 1, further comprising a second detection switch; the second detection switch is electrically connected between the second detection pin and the second output interface; wherein the second detection switch is automatically turned on when the DC load is connected to the second output interface; and when detecting that the second signal is changed from a high-level signal to a low-level signal, the main control unit determines that the second output interface is connected with the direct-current load.
5. The energy storage power supply of claim 1, further comprising:
the charger is electrically connected with the input interface; and
the charging control switch is electrically connected between the charger and the energy storage unit;
the main control unit is also electrically connected with the charging control switch and is used for controlling the on/off of the charging control switch.
6. The energy storage power supply according to claim 5, wherein the main control unit is further configured to control the charging control switch to be turned off when it is detected that the first output interface is connected to the ac load and/or the second output interface is connected to the dc 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 charging control switch to be turned on and control the second discharging switch to be turned off when the first output interface is not connected to the ac load and the second output interface is not connected to the dc load, so that the commercial power charges the energy storage unit.
8. The energy storage power supply of claim 5, further comprising:
the communication unit is electrically connected with the main control unit and is used for communicating with a mobile terminal;
when the energy storage unit is in a charging state, the main control unit further controls the charging control switch to be turned off according to a first instruction sent by the mobile terminal and received by the communication unit so as to prohibit the commercial power from continuously charging the energy storage unit; or when the energy storage unit is in a discharging state, the main control unit further controls the second discharging switch to be turned off according to a second instruction sent by the mobile terminal and received by the communication unit, so as to prohibit the energy storage unit from continuing to supply power to the direct-current load.
9. The energy storage power supply according to claim 5, 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 charging control switch to be turned off when the voltage of at least one battery module is higher than a first preset voltage so as to 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 second discharging switch 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 control the energy storage unit to stop supplying power to the dc load; wherein the first preset voltage is greater than the second preset voltage.
10. The energy storage power supply of claim 9, 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 |
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| CN201921157984.9U CN210839035U (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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| CN201921157984.9U CN210839035U (en) | 2019-07-22 | 2019-07-22 | Energy storage power supply |
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| CN210839035U true CN210839035U (en) | 2020-06-23 |
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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 |
| CN110445229A (en) * | 2019-07-22 | 2019-11-12 | 深圳市华思旭科技有限公司 | Accumulation power supply |
-
2019
- 2019-07-22 CN CN201921157984.9U patent/CN210839035U/en active Active
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 |
| CN110445229A (en) * | 2019-07-22 | 2019-11-12 | 深圳市华思旭科技有限公司 | Accumulation power supply |
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