CN218183046U - Lithium battery charging and discharging equipment and system - Google Patents
Lithium battery charging and discharging equipment and system Download PDFInfo
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- CN218183046U CN218183046U CN202222117280.7U CN202222117280U CN218183046U CN 218183046 U CN218183046 U CN 218183046U CN 202222117280 U CN202222117280 U CN 202222117280U CN 218183046 U CN218183046 U CN 218183046U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a lithium battery charging and discharging equipment and system, wherein, this lithium battery charging and discharging equipment includes: a cabinet having a plurality of bay locations; wherein, each warehouse is provided with a pulse power supply module, a press machine module, a temperature control module and a bearing module; the input end of the pulse power supply module is connected with a high-voltage direct-current power supply, and the output end of the pulse power supply module is connected with the press machine module; when the lithium battery is placed in the bearing module, the press machine module is connected to the lithium battery so as to realize the electrical connection between the pulse power supply module and the lithium battery; the temperature control module is provided with a water inlet and a water outlet so as to realize the cooling of each storage position through water circulation. The utility model discloses an adopt high voltage direct current power as input power to and adopt hydrologic cycle to realize the cooling of equipment, the charge-discharge efficiency who has solved lithium cell battery charging and discharging equipment is low, and the low area of equipment integration degree is big, the poor problem of samming effect in the equipment.
Description
Technical Field
The utility model relates to a lithium cell technical field especially relates to a lithium cell charging and discharging equipment and lithium cell charging and discharging system.
Background
At present, the input power supply of the charging and discharging equipment of the formation section of the lithium battery is AC380V, the input power supply is converted into DC5V through two stages of power supplies on the charging and discharging equipment, the power supply and the press machine are split, and the power supply and the press machine are connected through a lead with the length of about 5 meters, so that the charging and discharging efficiency of the charging and discharging equipment is low (the charging efficiency is 65 percent, the discharging feedback efficiency is 55 percent), the occupied area of the equipment is large, the energy consumption of a plant configuration temperature control system is high, the temperature equalization effect is poor (the temperature is extremely poor above 10 ℃), the whole energy consumption of the formation section is high due to double superposition, and the carbon emission reduction policy of each large lithium battery plant is violated under the current situation. The investment of charging and discharging equipment in the lithium battery formation section accounts for 15% of the equipment investment of a battery cell production line, and the reduction of the equipment investment cost is also the goal pursued by a battery factory; the existing charging and discharging equipment for formation does not have the function of setting square wave pulse output current above 1Hz, and cannot carry out the pulse formation above 1 Hz.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a lithium battery charging and discharging equipment and system are provided to solve lithium battery charging and discharging equipment's charge-discharge efficiency low, the low area of equipment integration degree is big, in the equipment samming effect poor and the single scheduling problem of equipment application scene.
In order to solve or improve above-mentioned technical problem to a certain extent, according to the utility model discloses an aspect provides a charging and discharging equipment of lithium cell, includes: a cabinet having a plurality of bay locations;
wherein, each storehouse position is provided with a pulse power supply module, a press machine module, a temperature control module and a bearing module; the input end of the pulse power supply module is connected to a high-voltage direct-current power supply, and the output end of the pulse power supply module is connected to the press machine module; when the lithium battery is placed in the bearing module, the press machine module is connected to the lithium battery so as to realize the electrical connection between the pulse power supply module and the lithium battery; the temperature control module is provided with a water inlet and a water outlet so as to realize the cooling of each storage position through water circulation.
In some embodiments, the pulsed power module outputs a square-wave pulsed current of 1Hz to 10 Hz.
In some embodiments, the temperature control module comprises: a plurality of condensers, a plurality of fans, and a hot air duct;
the plurality of condensers are provided with the water inlets and the water outlets, the fan is arranged on the hot gas pipeline, and/or the fan is arranged on one side of each condenser;
the cabinet body is provided with a smoke exhaust and heat exhaust pipeline, and hot air pipelines in the storehouses are communicated with the smoke exhaust and heat exhaust pipeline.
In some embodiments, one or more of the condenser and the fan are disposed at one side of the pulse power module, the fan is disposed at the other side opposite to the one side of the power module, and the fan is disposed at a position where the hot gas duct corresponds to the other side of the pulse power module.
In some embodiments, the press module comprises: a probe board, a probe mounting column and a probe;
the probe mounting columns are connected to the probe board and correspond to the poles of the lithium battery one by one, each probe mounting column is provided with the probe, and the probe is used for being connected with the poles of the lithium battery;
the condenser is arranged between every two adjacent probe mounting columns, and the fan is arranged at the position, corresponding to the condenser, of the probe board.
In some embodiments, the carrier module comprises: a carrier and a first lifting device;
the carrying platform is used for placing the lithium battery, the first lifting device is connected to the carrying platform to drive the carrying platform to lift, and after the lithium battery is placed on the carrying platform, the first lifting device drives the carrying platform to move towards the press machine module so that a pole of the lithium battery is electrically connected to the press machine module.
In some embodiments, a second lifting device is arranged on the press module to drive the press module to lift;
after the lithium battery is placed in the bearing module, the second lifting device drives the press module to move towards the bearing module, so that the press module is electrically connected to the pole of the lithium battery.
In some embodiments, at least one fire module is disposed within the depot, and a drain is disposed at a bottom of the depot;
the cabinet body is provided with a main drain pipe which is respectively connected with the drain pipes of the storehouses so as to discharge the liquid sprayed by the fire-fighting module out of the cabinet body.
In some embodiments, an automatic door is disposed at one side of each of the storage locations to access the lithium battery through the automatic door.
According to another aspect of the present invention, there is provided a charging and discharging system for a lithium battery, comprising a high voltage dc power supply, a water inlet pipe, a water return pipe, and at least one lithium battery charging and discharging device according to any one of the above embodiments;
the high-voltage direct-current power supply is connected to the pulse power supply module in each storage position to provide direct current for the lithium battery;
the water inlet pipe is connected with the water inlet of the temperature control module, and the water return pipe is connected with the water return port of the temperature control module.
Compared with the prior art, the utility model obvious advantage and beneficial effect have. Borrow by above-mentioned technical scheme, the utility model relates to a charge-discharge equipment and system of lithium cell can reach considerable technical progress nature and practicality to have the wide use value in industry, it has following advantage at least:
(one) the utility model discloses a lithium cell charge-discharge system adopts high voltage direct current power supply to supply power, has reduced AC-DC's among the prior art conversion for original two-stage conversion becomes and the conversion, has improved electric energy conversion efficiency, has reduced the volume of power, has reduced power module's calorific capacity.
(two) the utility model discloses a lithium cell charging and discharging equipment has all integrated pulse power supply module, press module, temperature control module and has born the module in each storehouse position, has shortened the line length between pulse power supply module and press module, has promoted charging and discharging efficiency, has reduced the area of equipment, has reduced the cost of equipment.
(III) the utility model discloses a lithium battery charging and discharging equipment adopts dynamic formula water accuse temperature, and it is high to have solved among the prior art lithium battery charging and discharging equipment environment accuse temperature energy consumption, the poor problem of samming effect.
(IV) the utility model discloses a lithium cell charging and discharging equipment adopts pulse power supply module, exports 1Hz-10Hz square wave pulse current, satisfies the setting that wide range current frequency becomes the prescription, has shortened the formation and the high temperature time of stewing of lithium cell, has improved SEI (solid electrolyte interface, solid dielectric interface film) film forming effect.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a lithium battery charging and discharging system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a storage location in a lithium battery charging and discharging device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a lithium battery charging and discharging device according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a lithium battery charging and discharging system according to another embodiment of the present invention.
[ description of symbols ]
1: cabinet body
11: smoke exhausting and heat exhausting pipeline
12: main water drainage pipe
10: storehouse position
101: partition plate
102: power module output terminal
103: press module wiring terminal
104: drain pipe
105: automatic door
20: pulse power supply module
30: press module
301: probe card
302: probe mounting column
303: probe needle
40: temperature control module
401: condenser
402: fan with cooling device
403: hot gas pipeline
50: bearing module
501: carrying platform
502: first lifting device
503: first limit unit
60: fire fighting module
100: lithium battery charging and discharging equipment
200: power supply line
300: water inlet pipe
400: water return pipe
500: fire-fighting pipeline
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the objectives of the present invention, the following detailed description will be made in conjunction with the accompanying drawings and preferred embodiments for the specific embodiments and effects of a lithium battery charging and discharging device and system according to the present invention.
The embodiment of the utility model provides a lithium battery charging and discharging equipment 100, as shown in fig. 1, this lithium battery charging and discharging equipment 100 includes: a cabinet 1, wherein the cabinet 1 is provided with a plurality of storage positions 10.
As shown in fig. 2, each storage location 10 is provided with a pulse power supply module 20, a press machine module 30, a temperature control module 40 and a carrying module 50.
Wherein the pulse power supply module 20 is disposed at an upper portion of the magazine 10, and is separated from the press module 30 by a partition plate 101. The input end of the pulse power supply module 20 is connected to the high voltage dc power supply, and the output end of the pulse power supply module 20 is connected to the press machine module 30. The pulse power module 20 converts the high voltage dc power of the high voltage dc power supply into a low voltage square wave pulse current, and transmits the low voltage square wave pulse current to the press module 30, so as to complete the formation process of the lithium battery.
As shown in fig. 3, a power module output terminal 102 and a press module connection terminal 103 are provided on one side of each magazine site 10. The output end of the pulse power supply module 20 is connected to the power supply module output terminal 102, the press machine module 30 is connected to the press machine module connection terminal 103, and the power supply module output terminal 102 and the press machine module connection terminal 103 are connected through a connection line, so that the electrical connection between the pulse power supply module 20 and the press machine module 30 is realized.
In this embodiment, the high voltage DC power supply can provide DC power of 600V or more, which is used as an input power supply of the lithium battery charging and discharging apparatus 100. Compared with the scheme that an alternating current power supply is used as an input power supply in the prior art, the scheme that the high-voltage direct current power supply is used as the input power supply reduces AC-DC conversion, and changes the two-stage conversion of AC-DC and DC-DC in the prior art into one-stage conversion only needing DC-DC. The size of the power module is reduced, and the heat productivity of the power module is reduced. With the reduction of the volume of the power supply module, the pulse power supply module 20 and the press machine module 30 can be integrated, and the length of a connecting line between the pulse power supply module 20 and the press machine module 30 is shortened. Meanwhile, the equipment cost can be reduced, and the occupied area of the equipment is reduced.
Specifically, the length of the connecting line between the pulse power supply module 20 and the press machine module 30 is less than 1 meter, the charging and discharging efficiency of the lithium battery charging and discharging equipment 100 is improved to over 85%, the floor area of the equipment is reduced by about 40%, and the equipment cost is reduced by about 20%.
In one embodiment, the pulse power module 20 is capable of outputting a square wave pulse current of 1Hz-10 Hz. By increasing the range of the output frequency of the pulse power supply module 20, the setting of a formula for a wide-range current frequency formation can be satisfied. It can know, through the promotion of pulse current frequency, can shorten the formation time of lithium cell effectively to and the high temperature time of stewing to promote lithium cell charging and discharging equipment 100's operating efficiency, can improve the SEI film forming effect of lithium cell simultaneously.
As shown in fig. 2, the press module 30 includes a probe card 301, a probe mounting post 302, and a probe 303. The plurality of probe mounting columns 302 are all mounted on the probe board 301, the number of the probes 303 is the same as that of the probe mounting columns 302, and each probe mounting column 302 is provided with one probe 303. The number of probes 303 corresponds one-to-one to the number of poles of the lithium battery placed on the carrier module 50.
After the lithium battery is placed in the supporting module 50, the probes 303 of the pressing module 30 are respectively connected to the poles of the lithium battery, so as to perform charging and discharging operations on the lithium battery.
In an embodiment, as shown in fig. 2, the carrying module 50 includes a stage 501 and a first lifting device 502, where the stage 501 is used for placing a lithium battery, and the first lifting device 502 is connected to the stage 501 and is used for driving the stage 501 to lift.
In this embodiment, after the lithium battery is placed on the carrier 501, the first lifting device 502 drives the carrier 501 to ascend, so that the lithium battery placed on the carrier 501 moves toward the press module 30 until the pole of the lithium battery is electrically connected to the probe 303 of the press module 30.
Specifically, the first lifting device 502 includes an air cylinder and a telescopic rod, and the air cylinder can drive the telescopic rod to extend and retract, so as to lift the carrier 501. Of course, the lifting of the carrier 501 driven by the cylinder and the telescopic rod is only a specific embodiment of the present invention, and is not intended to limit the scope of the present invention.
In this embodiment, the first lifting device 502 is further provided with a first limiting unit 503, and the first limiting unit is configured to limit the lifting height of the carrying platform 501, so as to prevent the carrying platform 501 from being too high in lifting height, and prevent the probe 303 of the press module 30 from being squeezed with the lithium battery post, which may cause damage.
In another embodiment, a second lifting device (not shown) is disposed on the pressing machine module 30, the carrying module 50 is fixedly disposed in the storage position 10, and the pressing machine module 30 is driven by the second lifting device to move towards the lithium battery placed on the carrying module 50, so that the probe 303 of the pressing machine module 30 is connected to the pole of the lithium battery.
In this embodiment, the second lifting device is further provided with a second limiting unit (not shown in the figure), and the moving distance of the press module 30 can be limited by the second limiting unit, so as to prevent the press module 30 from being too far away and prevent the probe 303 of the press module 30 from being pressed against the lithium battery pole, which may cause damage.
As shown in fig. 2, the temperature control module 40 includes a plurality of condensers 401, a plurality of fans 402, and a hot gas duct 403. Wherein, a plurality of condensers 401 dispose water inlet and delivery port, and this water inlet is connected in inlet tube 300, and the return water mouth is connected in wet return 400.
In order to ensure the smooth release of the cooling energy generated by the condensers 401, a fan 402 is disposed on one side of each condenser 401, and the condensation of the condenser 401 is blown into the storage space 10 by the fan 402.
The hot air pipes 403 in the storage space 10 are communicated with each other and are finally connected to the smoke exhausting and heat exhausting pipe 11 disposed on the cabinet 1. In order to remove heat generated in the charging and discharging processes of the lithium battery as soon as possible and smoke generated by fire in the equipment to the outside of the cabinet body 1, a plurality of fans 402 are arranged on the hot air pipeline 403, hot air or smoke in the storage position 10 is extracted into the hot air pipeline 403 through the plurality of fans 402, and finally the hot air or smoke is discharged out of the cabinet body 1 through the smoke exhaust and heat exhaust pipeline 11.
In this embodiment, the ambient temperature in the storage location 10 can be effectively reduced by a dynamic water temperature control manner, and the energy consumption of ambient temperature control is reduced at the same time. Through setting up hot gas pipeline 403 and a plurality of fan 402, discharge the steam in storehouse position 10 rapidly for ambient temperature in storehouse position 10 is more even, has solved the poor problem of the interior ambient temperature samming effect of storehouse position 10.
In an embodiment, as shown in fig. 2, one or more condensers 401 and fans 402 are disposed on one side of the pulse power module 20, and during the charging and discharging processes of the lithium battery, the pulse power module 20 generates a large amount of heat, so that the cold generated by the condensers 401 can be blown to the pulse power module 20 by the fans 402 to rapidly cool the pulse power module 20.
The fan 402 is arranged on the other side of the pulse power supply, so that the fluidity of the cold energy generated by the condenser 401 is increased through the fan 402, and the effect of cooling the pulse power supply module 20 is further improved. A fan 402 is arranged at a position corresponding to the other side of the pulsating power supply on the hot air pipeline 403 corresponding to the other side of the pulsating power supply, the fan 402 is used for rapidly extracting the hot air in the space where the pulsating power supply is located into the hot air pipeline 403, and finally the hot air is discharged out of the cabinet body 1 through the smoke exhaust and heat exhaust pipeline 11.
In one embodiment, a plurality of condensers 401 are disposed at the interval between every two adjacent probe mounting posts 302, and a fan (not shown) is disposed on the probe board 301 at a position corresponding to the condenser 401 disposed between the probe mounting posts 302, so that the cooling energy generated by the condensers 401 is blown to the lithium battery by the fan 402 to cool the lithium battery during charging and discharging.
A plurality of fans 402 are disposed on the hot air duct 403 in the space where the press module 30 and the carrying module 50 are located, so as to draw hot air generated during the charging and discharging processes of the lithium battery into the hot air duct 403, and finally, the hot air is discharged out of the cabinet 1 through the smoke exhaust and heat exhaust duct 11.
In one embodiment, a fire-fighting module 60 is disposed in each storage location 10 of the cabinet 1, so that fire can be extinguished through the fire-fighting module 60 when a fire occurs in the lithium battery. Preferably, the fire fighting module 60 employs a water-air integrated fire fighting system.
A drain 104 is also provided at the bottom of the depot 10 to drain away liquid sprayed during fire fighting. The drain pipes 104 of the respective depot sites 10 are connected to a main drain pipe 12 provided on the cabinet 1 to drain the liquid sprayed by fire fighting out of the cabinet 1.
The connection between the lower plate and the side plate of each storage position 10 is sealed to prevent the liquid sprayed by fire fighting from leaking into the space between the pulse power supply modules 20 in the adjacent storage position 10 below the storage position 10 through the gap at the connection.
The partition plate 101 separating the press module 30 from the pulse power supply module 20 is a flame retardant plate to prevent the lithium battery from reaching the pulse power supply module 20 when a fire occurs during the charging and discharging processes. Preferably, the upper and lower surfaces of the partition 101 are coated with stainless steel.
In an embodiment, as shown in fig. 4, one side of each storage position 10 of the cabinet body 1 is provided with an automatic door 105, and when a lithium battery is placed and taken out, the automatic door is opened and closed automatically, so that the automation of charging and discharging of the lithium battery is realized, the participation of workers is reduced, and the operation efficiency is improved.
The embodiment of the utility model provides a lithium battery charging and discharging system is still provided, as shown in fig. 1, it includes high voltage direct current power supply (not shown in the figure), inlet tube 300, wet return 400 and the lithium battery charging and discharging equipment 100 of any above-mentioned embodiment of at least one.
Wherein, the high voltage dc power is connected to each pulse current module 20 in the lithium battery charging and discharging device 100 through the power supply line 200, respectively, to provide high voltage dc power.
Preferably, the high voltage direct current power supply has a voltage of DC600V and above.
The water inlet pipe 300 is connected to water inlets of the temperature control modules 40 in the lithium battery charging and discharging device 100, and the water return pipe 400 is connected to water return ports of the temperature control modules 40 in the lithium battery charging and discharging device 100.
Further, the lithium battery charging and discharging system further includes a fire fighting pipeline 500, and the fire fighting pipeline 500 is connected to each fire fighting module 60 in the lithium battery charging and discharging device 100.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.
Claims (10)
1. A lithium battery charging and discharging device, comprising: a cabinet body (1), the cabinet body (1) having a plurality of storage locations (10);
wherein, a pulse power supply module (20), a press machine module (30), a temperature control module (40) and a bearing module (50) are arranged in each storehouse position (10); the input end of the pulse power supply module (20) is connected to a high-voltage direct-current power supply, and the output end of the pulse power supply module is connected to the press machine module (30); when the lithium battery is placed in the bearing module (50), the press machine module (30) is connected to the lithium battery so as to realize the electrical connection between the pulse power supply module (20) and the lithium battery; the temperature control module (40) is provided with a water inlet and a water outlet so as to realize the cooling of each storage position (10) through water circulation.
2. Lithium battery charging and discharging device according to claim 1, characterized in that the pulsed power supply module (20) outputs a square wave pulsed current of 1Hz-10 Hz.
3. The lithium battery charging and discharging device according to claim 1, wherein the temperature control module (40) comprises a plurality of condensers (401), a plurality of fans (402), and a hot gas duct (403);
wherein the plurality of condensers (401) are provided with the water inlets and the water outlets, the fan (402) is arranged on the hot gas pipeline (403), and/or the fan (402) is arranged on one side of the condenser (401);
the cabinet body (1) is provided with a smoke exhaust and heat exhaust pipeline (11), and hot air pipelines (403) in each storage position (10) are communicated with the smoke exhaust and heat exhaust pipeline (11).
4. Lithium battery charging and discharging device according to claim 3, characterized in that one or more of said condenser (401) and said fan (402) are provided at one side of said pulsed power supply module (20), said fan (402) being provided at the other side opposite to said one side of said power supply module, said hot gas duct (403) being provided with said fan (402) in correspondence of said other side of said pulsed power supply module (20).
5. Lithium battery charging and discharging device according to claim 3 or 4, characterised in that the press module (30) comprises: a probe board (301), a probe mounting column (302) and a probe (303);
the plurality of probe mounting columns (302) are connected to the probe board (301), the plurality of probe mounting columns (302) correspond to the poles of the lithium battery one by one, each probe mounting column (302) is provided with the probe (303), and the probe (303) is used for being connected with the poles of the lithium battery;
the condenser (401) is arranged between every two adjacent probe mounting columns (302), and the fan (402) is arranged at the position, corresponding to the condenser (401), of the probe board (301).
6. Lithium battery charging and discharging device according to claim 1, characterized in that said carrying module (50) comprises: a stage (501) and a first lifting device (502);
the carrying platform (501) is used for placing the lithium battery, the first lifting device (502) is connected to the carrying platform (501) to drive the carrying platform (501) to lift, and after the lithium battery is placed on the carrying platform (501), the first lifting device (502) drives the carrying platform (501) to move towards the press module (30), so that a pole of the lithium battery is electrically connected to the press module (30).
7. The lithium battery charging and discharging device according to claim 1, wherein a second lifting device is provided on the press module (30) to drive the press module (30) to lift;
after the lithium battery is placed in the bearing module (50), the second lifting device drives the press module (30) to move towards the bearing module (50), so that the press module (30) is electrically connected to a pole of the lithium battery.
8. Lithium battery charging and discharging device according to claim 1, characterized in that at least one fire fighting module (60) is arranged in the depot (10) and a drain (104) is arranged at the bottom of the depot (10);
the cabinet body (1) is provided with a main drainage pipe (12) which is respectively connected with the drainage pipes (104) of the storage positions (10) so as to discharge the liquid sprayed by the fire-fighting module (60) out of the cabinet body (1).
9. Lithium battery charging and discharging equipment according to claim 1, characterised in that one side of each of the storage locations (10) is provided with an automatic door (105) for access of the lithium battery through the automatic door (105).
10. A lithium battery charging and discharging system, characterized by comprising a high voltage dc power supply, a water inlet pipe (300) and a water return pipe (400), and at least one lithium battery charging and discharging device (100) according to any one of claims 1-9;
the high-voltage direct-current power supply is connected to the pulse power supply modules (20) in the storage positions (10) to provide direct current for the lithium batteries;
the water inlet pipe (300) is connected to the water inlet of the temperature control module (40), and the water return pipe (400) is connected to the water return port of the temperature control module (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222117280.7U CN218183046U (en) | 2022-08-11 | 2022-08-11 | Lithium battery charging and discharging equipment and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222117280.7U CN218183046U (en) | 2022-08-11 | 2022-08-11 | Lithium battery charging and discharging equipment and system |
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| Publication Number | Publication Date |
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| CN218183046U true CN218183046U (en) | 2022-12-30 |
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| CN202222117280.7U Active CN218183046U (en) | 2022-08-11 | 2022-08-11 | Lithium battery charging and discharging equipment and system |
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| CN (1) | CN218183046U (en) |
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2022
- 2022-08-11 CN CN202222117280.7U patent/CN218183046U/en active Active
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