CN219475739U - Energy-saving alternating-current charging pile aging equipment - Google Patents
Energy-saving alternating-current charging pile aging equipment Download PDFInfo
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- CN219475739U CN219475739U CN202320166255.XU CN202320166255U CN219475739U CN 219475739 U CN219475739 U CN 219475739U CN 202320166255 U CN202320166255 U CN 202320166255U CN 219475739 U CN219475739 U CN 219475739U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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Abstract
The utility model relates to energy-saving alternating-current charging pile aging equipment. The problems of single detection, low efficiency, serious energy loss and lack of monitoring and control of the existing ageing equipment are solved. The device comprises a connecting module, wherein a plurality of charging piles are connected in parallel, the input end of the connecting module is connected with a power grid, and the output end of the connecting module is connected with a load control module; the load control module is used for switching the charging pile circuits one by one to carry out loading operation, and the output end of the load control module is connected with a grid-connected feedback load through a grid-connected inverter; and the grid-connected feedback load is connected with the power grid. According to the utility model, parallel aging can be carried out on a plurality of charging piles in batches, the load is controlled by the load control module to automatically and circularly switch and load, and independent aging test is carried out on each charging pile, so that the working efficiency is improved. The output load is fed back to the power grid through the grid-connected inverter and the grid-connected feedback load, so that energy conservation is realized.
Description
Technical Field
The utility model relates to the technical field of ageing detection, in particular to energy-saving alternating-current charging pile ageing equipment.
Background
Along with the rapid growth of new energy industry in China's economic development, the AC charging pile has stable charging, small volume and larger personal demand, and manufacturers for producing the charging pile are increasingly increasing, so that the energy-saving AC charging pile aging equipment becomes an indispensable supporting facility for process control of manufacturers for solving and meeting the production demand of batch aging of charging pile products.
The existing AC charging piles are aged by using single matched load, if the AC charging piles are mass-produced, the energy loss caused by larger load power is serious, certain economic loss is brought to manufacturers, and the aging condition of each pile is difficult to monitor and control, and the efficiency is low.
Disclosure of Invention
The utility model mainly solves the problems of single detection, low efficiency, serious energy loss and lack of monitoring and control of the existing ageing equipment, and provides the energy-saving type alternating-current charging pile ageing equipment.
The technical scheme adopted for solving the technical problems is as follows: an energy-saving AC charging pile aging device comprises,
the connecting module is used for connecting the plurality of charging piles in parallel, the input end of the connecting module is connected with a power grid, and the output end of the connecting module is connected with the load control module;
the load control module is used for switching the charging pile circuits one by one to carry out loading operation, and the output end of the load control module is connected with a grid-connected feedback load through a grid-connected inverter;
and the grid-connected feedback load is connected with the power grid.
According to the utility model, parallel aging can be carried out on a plurality of charging piles in batches, the load is controlled by the load control module to automatically and circularly switch and load, and independent aging test is carried out on each charging pile, so that the working efficiency is improved. The output load is fed back to the power grid through the grid-connected inverter and the grid-connected feedback load, so that energy conservation is realized.
As a preferable scheme of the scheme, the intelligent charging system further comprises a monitoring module, wherein the monitoring module comprises an upper computer, the upper computer is respectively connected with each charging pile through a switch, and the upper computer is connected with the cloud platform through a network. According to the scheme, each charging pile is connected with the upper computer through the data line, each charging pile transmits charging information to the upper computer for real-time monitoring, historical faults of aging information and aging products can be checked at any time, and the problem that the aging condition of the charging pile is difficult to monitor and control by the existing aging equipment is solved. The upper computer can control each charging pile, realizes one-key startup on/off of the charging pile, and is more convenient to operate.
As a preferable scheme of the scheme, the connection module comprises a plurality of connection positions, the connection positions comprise an input end and an output end, the charging pile is connected between the input end and the output end, the input ends of the connection positions are connected in parallel, and then are connected to a power grid through a circuit breaker, and the output ends of the connection positions are respectively connected to the load control module. Each connection position is used for connecting a charging pile for testing, the circuit breaker is a power switch of ageing equipment, and the circuit breaker is connected to an upper computer and is controlled by the upper computer.
As a preferable mode of the above scheme, the load control module includes a plurality of contactors and a load control unit, the number of contactors corresponds to the number of connected charging piles, first ends of the contactor coils are connected with each other, second ends of the contactor coils are connected to the load control unit respectively, first ends of the contactor contacts are connected with the corresponding charging piles, and second ends of the contactor contacts are connected with the grid-connected inverter. In the scheme, each contactor is controlled by a load control unit, and the load control unit controls the contactors to be closed one by one according to set time so as to load and operate the corresponding charging piles. The number of the contactors is consistent with the number of the charging piles, namely, the number of the connection bits.
As a preferred scheme of the scheme, the charging pile further comprises a charging start control unit, the charging start control unit comprises a charging gun and a gun seat, the charging gun is electrically connected with the charging pile, the gun seat is electrically connected with the load control module, the gun seat further comprises a signal output end for confirming that the charging gun is connected in place, and the signal output end is connected with the charging pile. In the scheme, the number of the charging start control units corresponds to the number of the charging piles, the charging start controller is used for judging whether the charging gun is connected in place, and the charging piles can start working after receiving signals of being connected in place. When the electric car charging device is used for detecting, a charging gun is required to be placed on the gun seat, the state that the charging gun is connected with the electric car is simulated, a circuit is conducted after the charging gun is connected in place, and at the moment, the charging pile is started to be connected with the circuit after the charging pile is started through a card swiping or an upper computer.
As a preferred scheme of the scheme, the intelligent charging system comprises a detection cabinet body and an equipment cabinet body, wherein a plurality of placing tables for placing charging piles are arranged on the detection cabinet body, each placing table is provided with a placing door, a grid-connected feedback load is arranged in the equipment cabinet body, and an upper computer is arranged separately from the grid-connected feedback load. This scheme test cabinet is divided and has placed a plurality of platforms, places the bench and sets up the test and use the electric pile that fills, can place one or more electric piles in placing the bench, places the bench and is provided with and places the door, can adopt the left and right movement push-and-pull mode, after electric pile is put into the line of connecing, thereby will place the door and close the ambient temperature when keeping ageing. And the grid-connected feedback load is independently placed in the equipment cabinet body. The upper computer and the grid-connected feedback load are arranged separately and can be arranged on the upper part of the test cabinet or the upper part of the equipment cabinet, so that the upper computer is arranged separately to avoid the influence on the normal operation and use of the equipment caused by the temperature rise and overheat of the equipment.
As a preferred scheme of the scheme, the intelligent heating device further comprises a heating module and a heat dissipation module, wherein the heating module and the heat dissipation module are respectively installed in the placing table, the heating module comprises a first temperature controller and a heater which are connected, and the heat dissipation module comprises a second temperature controller and a heat dissipation fan which are connected. This scheme sets up heating module and heat dissipation module in placing the platform, to placing the platform in design self-heating and the heat dissipation function of airing exhaust voluntarily to simulate high temperature ageing environment. The input end of the first temperature controller is connected with a power supply, the output end of the first temperature controller is connected with one end of the heater, and the other end of the heater is grounded. The input end of the second temperature controller is connected with a power supply, the output end of the second temperature controller is connected with the input end of the heat dissipation fan, and the output end of the heat dissipation fan is grounded. When the temperature in the placing table is lower, the first temperature controller is closed, the heater starts to heat, the temperature in the placing table is increased to the required temperature, and when the temperature exceeds the set temperature of the first temperature controller, the first temperature controller is opened, and the heater stops heating. When the temperature is lower, the second temperature controller is disconnected, the heat radiation fan does not work, when the temperature reaches the set temperature of the second temperature controller, the second temperature controller is closed, the heat radiation fan works, and the temperature in the placing table is reduced by exhausting air and radiating heat, so that the set temperature is always kept at the ageing set temperature.
As a preferable scheme of the scheme, the placing door is provided with a glass observation window, the bottom of the placing table is in an inclined slope shape, and the wall of the placing table is provided with a plurality of ventilation holes. In this scheme set up glass observation window and can conveniently observe the electric pile screen display that fills on placing the door. The bottom of placing the charging pile is designed into an inclined slope, and the charging pile is placed obliquely, so that the monitoring and screen operation setting are facilitated. The placing table wall is provided with vent holes for radiating heat of the placing table.
As a preferred solution of the foregoing solution, the charging gun includes a first power connector of the gun head, a second power connector of the gun head, a third power connector of the gun head, a center line connector of the gun head, a ground wire connector of the gun head, a confirmation connector of the gun head, a control guide connector of the gun head, and a resistor RC, where the first power connector of the gun head, the second power connector of the gun head, and the third power connector of the gun head are respectively connected to an output end of the charging pile, the ground wire connector of the gun head is grounded, the first end of the resistor RC is connected to the ground wire connector of the gun head, and the second end of the resistor RC is connected to the confirmation connector of the gun head; the gun seat comprises a gun seat first power supply connector, a gun seat second power supply connector, a gun seat third power supply connector, a gun seat center line connector, a gun seat ground wire connector, a gun seat confirmation connector, a gun seat control guide connector, a gun seat control unit, a resistor R1, a resistor R2 and a diode D1, wherein the gun seat first power supply connector, the gun seat second power supply connector and the gun seat third power supply connector are respectively connected with a load control module, the gun seat confirmation connector is connected with the gun seat control unit output end, the gun seat control unit input end is connected with the diode D1 cathode, the gun seat control guide connector is connected with the diode D1 anode, the resistor R1 and the resistor R2 are connected in parallel, one end of a circuit is connected with the gun seat ground wire connector after parallel connection, and the other end is connected with the diode D1 cathode.
After the gun head is connected with the gun seat, the power connector, the ground wire connector, the confirmation connector and the control guide connector are respectively connected in one-to-one correspondence. Before the charging gun is inserted into the gun seat, a charging gun control guide connector is connected with an internal circuit board of the charging pile, and the connector voltage is 12VDC. After the gun head is inserted on the gun seat, the gun seat guide connector is grounded after passing through the diode D1 and the resistor R2, the voltage of the gun seat control guide connector is changed into 6VDC, the charging pile detects that the voltage of the point is changed, namely the charging pile detects that the charging gun is connected in place, at the moment, the charging pile starts a charging pile connection circuit after being started through a card or an upper computer, and the charging pile starts to output to realize charging. The gun seat control unit is used for detecting the resistance value between the output end and the ground wire, judging whether the charging gun is connected in place for the vehicle end, wherein the gun seat only simulates the vehicle charging gun seat, and the effect is not needed.
The utility model has the advantages that: the parallel aging can be carried out on a plurality of charging piles in batches, the load is controlled by the load control module to automatically and circularly switch and load, and independent aging test is carried out on each charging pile, so that the working efficiency is improved. The output load is fed back to the power grid through the grid-connected inverter and the grid-connected feedback load, so that energy conservation is realized. The structure is reasonable, and the automatic heating and automatic air exhaust and heat dissipation functions are designed in the placing table, so that the high-temperature aging environment is simulated, and the detection is more accurate.
Drawings
FIG. 1 is a schematic diagram of a principal structure of the present utility model;
FIG. 2 is a schematic circuit diagram of the present utility model;
FIG. 3 is a schematic diagram of a circuit configuration of the load control module of the present utility model;
FIG. 4 is a schematic diagram of a circuit configuration of the charge start control unit according to the present utility model;
fig. 5 is a schematic view of an apparatus structure of the present utility model.
The device comprises a charging pile 2, a load control module 3, a grid-connected inverter 4, a grid-connected feedback load 5, an upper computer 6, a load control unit 7, a charging starting control unit 8, a charging gun 9, a gun seat 10, a detection cabinet 11, a device cabinet 12, a placement table 13 and ventilation holes.
Detailed Description
The technical scheme of the utility model is further described below through examples and with reference to the accompanying drawings.
Examples:
the embodiment of the energy-saving type alternating current charging pile aging equipment comprises a connecting module, a load control module, a grid-connected feedback load and a monitoring module as shown in fig. 1 and 2.
The connecting module is used for connecting the plurality of charging piles 1 in parallel, the input end of the connecting module is connected with a power grid, and the output end of the connecting module is connected with the load control module 2; specifically, the connection module comprises a plurality of connection positions, the connection positions comprise an input end and an output end, the charging pile is arranged on the connection positions and connected between the input end and the output end, the input ends of the connection positions are connected in parallel, and then the connection positions are connected to a power grid through a circuit breaker, and the output ends of the connection positions are respectively connected to the load control module.
The load control module 2 is used for switching the charging pile circuits one by one to carry out loading operation, and the output end of the load control module is connected with the grid-connected feedback load 4 through the grid-connected inverter 3.
And the grid-connected feedback load 4 is connected with the power grid.
The monitoring module comprises an upper computer 5, wherein the upper computer is respectively connected with each charging pile through a switch, and the upper computer is connected with the cloud platform through a network.
The load control module includes a plurality of contactors and load control units, and the contactor quantity corresponds with the electric pile quantity of charging of connection, and this embodiment ageing equipment takes setting up 8 connection module as an example, and 8 electric piles of once connecting detect, and the load control module that corresponds sets up 8 contactors, and load control unit adopts 1/8 output control. As shown in fig. 2 and 3, the first ends of the contactor coils are connected to each other, the second ends of the contactor coils are connected to each other and then connected to the load control unit, the first ends of the contactor contacts are connected to the corresponding charging piles 1, and the second ends of the contactor contacts are connected to each other and then connected to the grid-connected inverter 3.
The charging pile further comprises a charging start control unit 7, the charging start control unit comprises a charging gun 8 and a gun seat 9, the charging gun is electrically connected with the charging pile, the gun seat is electrically connected with the load control module, the gun seat further comprises a signal output end for confirming that the charging gun is connected in place, and the signal output end is connected with the charging pile. The charging gun is inserted into the gun seat and used for simulating the charging state of the electric automobile.
As shown in fig. 4, the charging gun comprises a gun head first power connector, a gun head second power connector, a gun head third power connector, a gun head central line connector, a gun head ground wire connector, a gun head confirmation connector, a gun head control guide connector and a resistor RC, wherein the gun head first power connector, the gun head second power connector and the gun head third power connector are respectively connected with the output end of the charging pile, the gun head ground wire connector is grounded, the gun head ground wire connector is connected with the first end of the resistor RC, and the gun head confirmation connector is connected with the second end of the resistor RC. The gun seat comprises a gun seat first power supply connector, a gun seat second power supply connector, a gun seat third power supply connector, a gun seat center line connector, a gun seat ground wire connector, a gun seat confirmation connector, a gun seat control guide connector, a gun seat control unit, a resistor R1, a resistor R2 and a diode D1, wherein the gun seat first power supply connector, the gun seat second power supply connector and the gun seat third power supply connector are respectively connected with a load control module, the gun seat confirmation connector is connected with the gun seat control unit output end, the gun seat control unit input end is connected with the diode D1 cathode, the gun seat control guide connector is connected with the diode D1 anode, the resistor R1 and the resistor R2 are connected in parallel, one end of a parallel circuit is connected with the gun seat ground wire connector, and the other end is connected with the diode D1 cathode.
The power connector, the ground wire connector, the confirmation connector and the control guide connector of the gun head and the gun seat are respectively in one-to-one correspondence. Before the charging gun is inserted into the gun seat, a charging gun control guide connector is connected with an internal circuit board of the charging pile, and the connector voltage is 12VDC. After the gun head is inserted on the gun seat, the gun seat guide connector is grounded after passing through the diode D1 and the resistor R2, the voltage of the gun seat control guide connector is changed into 6VDC, the charging pile detects that the voltage of the point is changed, namely the charging pile detects that the charging gun is connected in place, at the moment, the charging pile starts a charging pile connection circuit after being started through a card or an upper computer, and the charging pile starts to output to realize charging.
The specific product structure of the equipment in this embodiment is shown in fig. 5, and includes a detection cabinet 10 and an equipment cabinet 11. The detection cabinet body is provided with a plurality of placing tables 12 for placing charging piles, two charging piles are placed on each placing table in the drawing, a gun seat is arranged on the right side of each charging pile for placing a charging gun, a placing door is arranged on each placing table, the placing door is a pushing door, and after the charging piles are placed in a connected line, the placing doors are closed so as to keep the ambient temperature during aging. The glass observation window is arranged on the placing door, so that the screen display of the charging pile can be conveniently observed, the bottom of the placing charging pile is designed to be an inclined slope, and the charging pile is obliquely placed, so that the monitoring and the screen operation setting are convenient. The placement table wall is provided with a vent hole 13 for radiating heat to the placement table. In order to simulate the high-temperature aging environment, a heating module and a heat dissipation module are further arranged in each placing table. As shown in fig. 1, the heating module includes a first temperature controller and a heater R3, which are connected, the heater is a heating resistor R3, and the heat dissipation module includes a second temperature controller and a heat dissipation fan M, which are connected. The input end of the first temperature controller is connected with a power supply, the output end of the first temperature controller is connected with one end of the heater R3, and the other end of the heater R3 is grounded. The input end of the second temperature controller is connected with a power supply, the output end of the second temperature controller is connected with the input end of the heat dissipation fan M, and the output end of the heat dissipation fan M is grounded. When the temperature in the placing table is lower, the first temperature controller is closed, the heater R3 starts to heat, the temperature of the placing table is increased to the required temperature, and when the temperature exceeds the set temperature of the first temperature controller, the first temperature controller is opened, and the heater R3 stops heating. When the temperature is lower, the second temperature controller is disconnected, the heat radiation fan does not work, when the temperature reaches the set temperature of the second temperature controller, the second temperature controller is closed, the heat radiation fan works, and the temperature in the placing table is reduced by exhausting air and radiating heat, so that the set temperature is always kept at the ageing set temperature. The grid-connected feedback load is arranged in the equipment cabinet body, the upper computer and the grid-connected feedback load are arranged separately, and the upper computer is arranged on the upper part of the equipment cabinet body.
The equipment aging process comprises the following steps: connecting an alternating current charging pile product in the equipment, and connecting an input and charging gun; closing an equipment input switch, and starting up a charging pile charging display screen, and starting up each charging pile on an upper computer; loading and running one by one according to the set time by a load control unit, and switching one charging pile for 30 minutes by default; and after the aging is finished, the charging pile without faults is directly sent to be inspected and flows into the next working procedure, and when the aging is abnormal, the charging pile is sent to be maintained, and after the charging pile is qualified through the test, the charging pile is aged.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Although the terms of charging pile, load control module, grid-connected inverter, grid-connected feedback load, host computer, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (9)
1. An energy-saving alternating-current charging pile ageing device is characterized in that: comprising the steps of (a) a step of,
the connecting module is used for connecting the plurality of charging piles in parallel, the input end of the connecting module is connected with a power grid, and the output end of the connecting module is connected with the load control module;
the load control module is used for switching the charging pile circuits one by one to carry out loading operation, and the output end of the load control module is connected with a grid-connected feedback load through a grid-connected inverter;
and the grid-connected feedback load is connected with the power grid.
2. The energy-saving alternating-current charging pile aging device according to claim 1, further comprising a monitoring module, wherein the monitoring module comprises an upper computer, the upper computer is respectively connected with each charging pile through a switch, and the upper computer is connected with the cloud platform through a network.
3. An energy-saving ac charging pile aging apparatus according to claim 1 or 2, wherein the connection module comprises a plurality of connection sites including an input terminal and an output terminal, the charging pile is connected between the input terminal and the output terminal, the connection site input terminals are connected in parallel and then connected to the power grid through a circuit breaker, and the connection site output terminals are respectively connected to the load control module.
4. The energy-saving type alternating current charging pile aging device according to claim 1 or 2, wherein the load control module comprises a plurality of contactors and a load control unit, the number of the contactors corresponds to that of the connected charging piles, the first ends of the contactor coils are connected with each other, the second ends of the contactor coils are respectively connected to the load control unit, the first ends of the contactor contacts are connected with the corresponding charging piles, and the second ends of the contactor contacts are connected with the grid-connected inverter.
5. The energy-saving type alternating-current charging pile aging equipment according to claim 4, wherein the charging pile further comprises a charging start control unit, the charging start control unit comprises a charging gun and a gun seat, the charging gun is electrically connected with the charging pile, the gun seat is electrically connected with the load control module, the gun seat further comprises a signal output end for confirming that the charging gun is connected in place, and the signal output end is connected with the charging pile.
6. The energy-saving alternating current charging pile aging equipment according to claim 1, which is characterized by comprising a detection cabinet body and an equipment cabinet body, wherein a plurality of placing tables for placing charging piles are arranged on the detection cabinet body, each placing table is provided with a placing door, the grid-connected feedback load is arranged in the equipment cabinet body, and the upper computer is separated from the grid-connected feedback load.
7. The energy-saving type alternating current charging pile aging device according to claim 6, further comprising a heating module and a heat dissipation module, wherein the heating module and the heat dissipation module are respectively installed in the placement table, the heating module comprises a first temperature controller and a heater which are connected, and the heat dissipation module comprises a second temperature controller and a heat dissipation fan which are connected.
8. The energy-saving type alternating current charging pile aging equipment according to claim 6, wherein the placing door is provided with a glass observation window, the bottom of the placing table is in an inclined slope shape, and a plurality of ventilation holes are formed in the wall of the placing table.
9. The energy-saving alternating current charging pile aging equipment according to claim 5, wherein the charging gun comprises a gun head first power connector, a gun head second power connector, a gun head third power connector, a gun head center line connector, a gun head ground wire connector, a gun head confirmation connector, a gun head control guide connector and a resistor RC, wherein the gun head first power connector, the gun head second power connector and the gun head third power connector are respectively connected with the charging pile output end, the gun head ground wire connector is grounded, the first end of the resistor RC is connected with the gun head ground wire connector, and the second end of the resistor RC is connected with the gun head confirmation connector; the gun seat comprises a gun seat first power supply connector, a gun seat second power supply connector, a gun seat third power supply connector, a gun seat center line connector, a gun seat ground wire connector, a gun seat confirmation connector, a gun seat control guide connector, a gun seat control unit, a resistor R1, a resistor R2 and a diode D1, wherein the gun seat first power supply connector, the gun seat second power supply connector and the gun seat third power supply connector are respectively connected with a load control module, the gun seat confirmation connector is connected with the gun seat control unit output end, the gun seat control unit input end is connected with the diode D1 cathode, the gun seat control guide connector is connected with the diode D1 anode, the resistor R1 and the resistor R2 are connected in parallel, one end of a circuit is connected with the gun seat ground wire connector after parallel connection, and the other end is connected with the diode D1 cathode.
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| CN202320166255.XU CN219475739U (en) | 2023-02-09 | 2023-02-09 | Energy-saving alternating-current charging pile aging equipment |
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|---|---|---|---|
| CN202320166255.XU CN219475739U (en) | 2023-02-09 | 2023-02-09 | Energy-saving alternating-current charging pile aging equipment |
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| CN219475739U true CN219475739U (en) | 2023-08-04 |
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| CN202320166255.XU Active CN219475739U (en) | 2023-02-09 | 2023-02-09 | Energy-saving alternating-current charging pile aging equipment |
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