CN223552626U - Battery pack - Google Patents
Battery packInfo
- Publication number
- CN223552626U CN223552626U CN202422818664.0U CN202422818664U CN223552626U CN 223552626 U CN223552626 U CN 223552626U CN 202422818664 U CN202422818664 U CN 202422818664U CN 223552626 U CN223552626 U CN 223552626U
- Authority
- CN
- China
- Prior art keywords
- shell
- battery pack
- distribution box
- liquid cooling
- cooling plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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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- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model relates to the technical field of batteries and provides a battery pack which comprises a lower box body, a liquid cooling plate and a distribution box assembly, wherein the liquid cooling plate and the distribution box assembly are arranged in the lower box body, the distribution box assembly comprises a shell connected with the liquid cooling plate, and a plurality of electric parts arranged in the shell, all the electric parts are connected through connecting copper bars, and at least part of connection points of the electric parts and the connecting copper bars are arranged close to one side of the liquid cooling plate. The battery pack can realize the cooling design of the severe heating position in the distribution box assembly, is more beneficial to improving the cooling effect of the distribution box assembly, and further can improve the overcurrent capacity of the distribution box assembly in a limited space, thereby being beneficial to meeting the requirement of rapid energy supplement of a high-power rapid charging vehicle.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery pack.
Background
Currently, electric vehicles in the market are mainstream of new energy vehicles, and the main problems of the electric vehicles include relatively low safety, long energy supplementing time, short endurance mileage and the like. In order to shorten the energy supplementing time of the electric vehicle, various manufacturers propose a power conversion scheme and a high-power quick-charging scheme, and the high-power quick-charging scheme has less investment compared with the power conversion scheme and is currently a main stream scheme on the market. The high-power quick charging scheme is to increase charging voltage and charging current simultaneously to increase charging power, so that the energy supplementing time of the electric vehicle is shortened.
The power battery is one of the core parts of the electric vehicle and consists of a module, a high-voltage copper bar, a low-voltage wire harness, a battery management system, a battery distribution box assembly, an upper box body, a lower box body and the like. The battery distribution box assembly is an energy distribution unit of the power battery, plays an important role, and particularly, the scheme design of the battery distribution box assembly is particularly important under the condition that a current high-power quick-charge scheme is adopted. However, the battery distribution box assembly on the market currently uses a low-voltage (400V) platform, the voltage platform selected by the internal electric device is lower, the specification is larger, the cost is higher, and the requirement of quick energy compensation of the high-power quick-charging vehicle cannot be met.
Disclosure of utility model
In view of the foregoing, the present utility model aims to provide a battery pack, which is beneficial to meeting the requirement of rapid energy supplement of a high-power rapid charging vehicle.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
A battery pack comprises a lower box body, a liquid cooling plate and a distribution box assembly, wherein the liquid cooling plate and the distribution box assembly are arranged in the lower box body;
The distribution box assembly comprises a shell connected with the liquid cooling plate, and a plurality of electric parts arranged in the shell, wherein the electric parts are connected through a connecting copper bar, and at least part of the electric parts are arranged close to one side of the liquid cooling plate at the connecting point of the electric parts and the connecting copper bar.
Further, a heat conducting piece is arranged between the shell and the liquid cooling plate.
Further, an insulating part is arranged between the shell and the heat conducting part, and the insulating part is at least arranged corresponding to the connection point of the connection copper bar and each electric part.
Further, the thickness dimension t1 of the insulating member is between 0.1 and 0.3mm, and/or the thickness dimension t2 of the heat conducting member is between 3 and 5mm.
Further, the shell comprises a first sub-shell and a second sub-shell arranged on the first sub-shell, each electric component and the connecting copper bar are arranged in a space surrounded by the first sub-shell and the second sub-shell, and flexible components are arranged between the first sub-shell and each electric component or between the second sub-shell and each electric component.
Further, the electric components comprise a main positive contactor, a main negative contactor, a quick positive contactor and a quick negative contactor, wherein the connection points of the main positive contactor, the main negative contactor, the quick positive contactor and the quick negative contactor and the connection copper bars are close to one side of the liquid cooling plate, and/or the main positive contactor and the quick positive contactor are connected in series through the connection copper bars, and the main negative contactor and the quick negative contactor are connected in series through the connection copper bars.
Further, at least part of the connection copper bars connected with the electric components are injection molded in the shell, and/or a plurality of electric interfaces are arranged on the connection copper bars.
Further, the shell is connected with the lower box body through a connecting piece.
Further, a gasket and a damping bushing are arranged between the shell and the lower box body, the damping bushing is sleeved on the connecting piece, and the gasket is located between the damping bushing and the head of the connecting piece.
Further, the battery pack further comprises a BMS slave plate arranged on the shell, and an electromagnetic shielding piece arranged between the BMS slave plate and the shell.
Compared with the prior art, the utility model has the following advantages:
According to the battery pack, the connection point of at least part of the electric parts and the connection copper bars is arranged close to one side of the liquid cooling plate, so that the cooling design of the position, which is seriously heated, inside the distribution box assembly can be realized, the cooling effect of the distribution box assembly is improved, the overcurrent capacity of the distribution box assembly is improved in a limited space, and the rapid energy supplementing requirement of a high-power rapid charging vehicle can be met.
In addition, through setting up the heat conduction spare, do benefit to the inside serious position that generates heat of block terminal assembly and the liquid cooling board and carry out the heat exchange, and then realize the better cooling to the block terminal assembly. The insulating piece is arranged at the connecting point of the copper bar and each electric piece, so that the electric safety of the distribution box assembly can be improved, and risks such as short circuit, overheating and the like are avoided. The thickness dimension t1 of the insulating piece is between 0.1 and 0.3mm, the thickness dimension t2 of the heat conducting piece is between 3 and 5mm, insulation and heat conducting effects are guaranteed, and the safety of the distribution box assembly is further improved.
And the arrangement of the flexible piece is beneficial to improving the installation stability of each electric piece, and meanwhile, is beneficial to simplifying the assembly process and realizing the design of reducing cost. The main positive contactor, the main negative contactor, the quick-charging positive contactor and the quick-charging negative contactor are all arranged close to one side of the liquid cooling plate, so that the liquid cooling plate can cool the inside of the distribution box assembly better at the serious heating position, and the overcurrent energy of the distribution box assembly is improved. The main positive contactor and the quick-charging positive contactor are connected in series through the connecting copper bars, and the main negative contactor and the quick-charging negative contactor are connected in series through the connecting copper bars, so that the safety level of the whole vehicle function is improved.
In addition, partly connect copper bar injection moulding in the casing, do benefit to and protect connecting copper bar, promote structural stability to and do benefit to the liquid cooling board and cool off the serious position that generates heat in the block terminal assembly is inside. Be equipped with a plurality of electrical interfaces on the connection copper bar to do benefit to the electrical interface requirement that satisfies different motorcycle types, can realize the platform that the block terminal assembly borrowed, greatly reduced block terminal assembly's design development cost. The shell is connected with the lower box body through the connecting piece, so that convenient disassembly and assembly are facilitated. The gasket and the damping bushing are arranged between the shell and the lower box body, so that the damping and noise reduction effects can be achieved. By providing electromagnetic shielding between the BMS slave board and the housing, high and low voltage isolation can be achieved, which is beneficial for the whole pack EMC (battery pack electromagnetic compatibility).
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
Fig. 1 is a schematic view of the overall structure of a battery pack according to an embodiment of the present utility model;
FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;
Fig. 3 is a schematic view illustrating an internal structure of a battery pack according to an embodiment of the present utility model;
fig. 4 is a schematic structural diagram of the distribution box assembly and the liquid cooling plate according to the embodiment of the utility model;
fig. 5 is a schematic view of a portion of a distribution box assembly according to an embodiment of the present utility model;
fig. 6 is a schematic view of an internal structure of a distribution box assembly according to an embodiment of the present utility model;
FIG. 7 is a schematic view of a shock absorbing bushing, gasket and connector assembly according to an embodiment of the present utility model;
Reference numerals illustrate:
11. The lower box body, 111, a frame, 112, a cross beam, 113 and an installation beam;
21. A liquid cooling plate;
31. The shell comprises a shell body 311, a first sub-shell body 3111, a connecting boss 312, a second sub-shell body 313, a flexible piece 32, an electric component 33, a connecting copper bar 331 and an electric interface;
41. a heat conducting member 42, an insulating member;
51. 52, a gasket, 53 and a shock absorption bushing;
6. BMS slave plates.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
In the description of the present utility model, it should be noted that, if terms indicating an orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are presented, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As used in the embodiments, the terms "up, down, left, right, front, and rear" are defined with reference to the up-down direction (also referred to as the height direction, or the entire pack Z direction) of the battery pack, the left-right direction (also referred to as the width direction, or the entire pack Y direction), and the front-rear direction (also referred to as the length direction, or the entire pack X direction). The "inner and outer" are defined with reference to the contours of the corresponding components, for example, "inner" and "outer" are defined with reference to the contours of the battery pack case, and "inner" is defined with reference to the side of the battery pack case near the middle of the battery pack, and "outer" is defined on the contrary.
Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the components may be fixedly connected, detachably connected or integrally connected, mechanically connected or electrically connected, directly connected or indirectly connected through an intermediate medium, or communicated with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
The embodiment relates to a battery pack, which can solve the problem that a distribution box assembly in the prior art cannot meet the requirement of quick energy supplement of a high-power quick-charging vehicle, and has better market product force.
As shown in fig. 1 to 7, the battery pack of the present embodiment includes a lower case 11, and a liquid cooling plate 21 and a distribution box assembly provided in the lower case 11. The distribution box assembly includes a housing 31 connected to the liquid cooling plate 21, and a plurality of electrical components 32 provided in the housing 31, wherein the electrical components 32 are connected to each other by a connection copper bar 33, and at least a part of connection points between the electrical components 32 and the connection copper bar 33 are provided near the liquid cooling plate 21.
At this time, as set up above, the accessible is close to liquid cooling board 21 one side with the tie point that connects copper bar 33 with at least some electric components 32 sets up, can realize carrying out the cooling design to the inside serious position that generates heat of block terminal assembly, more does benefit to the promotion to the cooling effect of block terminal assembly to improve the overflow ability of block terminal assembly in limited space, thereby can be favorable to satisfying the quick demand of mending energy of high-power quick-charging car.
Based on the above description, in detail, in this embodiment, in implementation, the liquid cooling plate 21 may be disposed at the top of the lower case 11 to serve as an upper cover, or may be directly disposed in the lower case 11, and the distribution box assembly is disposed above the liquid cooling plate 21. In this embodiment, the liquid cooling plate 21 is mainly disposed at the top of the lower case 11, and at this time, as shown in fig. 2, an opening for assembling the power supply and distribution box assembly is further formed at the bottom of the battery pack, and of course, the battery pack further includes a cover plate for covering the opening if necessary.
In this embodiment, as a preferred implementation manner, as shown in fig. 3 to 6, the housing 31 includes a first sub-housing 311, and a second sub-housing 312 disposed on the first sub-housing 311, each electrical component 32 and the connection copper bar 33 are disposed in a space enclosed by the first sub-housing 311 and the second sub-housing 312, and a flexible member 313 is disposed between the second sub-housing 312 and each electrical component 32.
In specific implementation, the flexible member 313 of this embodiment may be made of compressed foam, and the arrangement of the flexible member 313 herein is beneficial to improving the installation stability of each electrical component 32, and meanwhile, is beneficial to simplifying the assembly process and realizing the design of cost reduction.
It should be mentioned that the flexible member 312 is disposed between the second sub-housing 312 and each electrical component 32, and is suitable for the case that the second sub-housing 312 is located below the first sub-housing 311 along the up-down direction of the battery pack, and at this time, the first sub-housing 311 is in contact with the liquid cooling plate 21, however, the flexible member 312 may also be disposed between the first sub-housing 311 and each electrical component 32, and this arrangement is suitable for the case that the second sub-housing 312 is located above the first sub-housing 311 and is in contact with the liquid cooling plate 21.
In the present embodiment, as a preferred embodiment, the plurality of electrical components 32 includes a main positive contactor, a main negative contactor, a quick-charge positive contactor, and a quick-charge negative contactor. The connection points of the main positive contactor, the main negative contactor, the quick positive contactor and the quick negative contactor and the connection copper bar 33 are all close to one side of the liquid cooling plate 21, so that the liquid cooling plate 21 can cool the inside of the distribution box assembly better in serious heating position, and overcurrent energy of the distribution box assembly is improved.
It should be mentioned that, in this embodiment, since the liquid cooling plate 21 is used to directly cool the position of the serious heat generating part inside the distribution box assembly, that is, the position of the connecting contact of the large contactor, the distribution box assembly can be adapted to a low voltage (400V) platform, and also be adapted to a high voltage (e.g. 800V) platform, thereby being beneficial to meeting the requirements of high-power quick charging of the battery pack and quick energy supplementing of the electric car.
Furthermore, the parts of the structure not mentioned in the distribution box assembly of the present embodiment may refer to the structures of the distribution box product known to those skilled in the art, for example, the distribution box assembly further includes the electrical components 32 such as the pre-charging contactor, the pre-charging resistor, the current sensor, and the fuse.
Meanwhile, as a preferred implementation form, the main positive contactor and the quick-charging positive contactor are connected in series through the connecting copper bar 33, and the main negative contactor and the quick-charging negative contactor are connected in series through the connecting copper bar 33, so that the safety level of the whole vehicle function is improved.
In addition, in this embodiment, as a preferred implementation manner, with continued reference to fig. 3 to 6, at least part of the connection copper bars 33 connected to each electrical component 32 are injection molded in the housing 31, and in particular, the connection copper bars 33 connected to the input/output contacts of the large-sized contactors (the main positive contactor, the main negative contactor, the quick-charge positive contactor and the quick-charge negative contactor) are injection molded in the housing 31, which is advantageous mainly in that protection of the connection copper bars 33 is facilitated, structural stability is improved, and cooling of the seriously heated position in the interior of the distribution box assembly by the liquid cooling plate 21 is facilitated.
In addition, the connection copper bar 33 of the present embodiment is preferably provided with a plurality of electrical interfaces 331. Therefore, the requirements of the electrical interfaces 331 of different vehicle types are met, the borrowed platformization of the distribution box assembly can be realized, and the design and development cost of the distribution box assembly is greatly reduced.
In specific implementation, the electrical interface 331 of the present embodiment may include interfaces such as battery+, battery-, precursor-, postdriver-, quick-charge+, quick-charge-, PTC (thermistor) +, PTC (thermistor) -, OBC (on-board charger) +, OBC (on-board charger) -, and boost, so as to better adapt to requirements of the electrical interfaces 331 of different vehicle types.
In addition, in this embodiment, as a preferred implementation manner, as shown in fig. 2, 5 and 7, the housing 31 and the lower case 11 are connected by a connecting member 51, so as to facilitate easy assembly and disassembly. In particular, the lower case 11 of the present embodiment preferably includes a frame 111 and a beam 112 disposed in the frame 111, the beam 112 dividing the lower case 11 into a battery compartment and an electrical compartment, and the distribution box assembly is disposed in the electrical compartment.
In order to facilitate installation of the distribution box assembly, the electric cabinet is provided with mounting beams 113 corresponding to two ends of the housing 31 in the length direction, and connection bosses 3111 are respectively provided at two ends of the housing 31 (specifically, the first sub-housing 311) in the length direction, and the connection bosses 3111 are connected to the mounting beams 113 corresponding to the sections through the connection members 51.
As for the number and arrangement of the connection pieces 51, it is possible to set and adjust according to the installation requirement of the housing 31 in the lower case 11, for example, two connection pieces 51 are provided on the two connection bosses 3111, respectively, and the connection pieces 51 and the like are also provided in the middle of the housing 31 in the length direction.
In this embodiment, as a preferred implementation manner, as shown in fig. 2, 5 and 7, a spacer 52 and a shock absorbing bushing 53 are disposed between the housing 31 and the lower case 11, the shock absorbing bushing 53 is sleeved on the connecting piece 51, and the spacer 52 is located between the shock absorbing bushing 53 and the head of the connecting piece 51, so that the effects of shock absorption and noise reduction can be achieved. Meanwhile, in a specific structure, the connecting piece 51 may be a bolt or a screw, the gasket 52 may be a steel gasket 52, and the shock absorbing bushing 53 may be preferably made of rubber.
In addition, in the present embodiment, as a preferred embodiment, as shown in fig. 4 to 6, a heat conductive member 41 is provided between the housing 31 and the liquid cooling plate 21. By arranging the heat conducting piece 41, the heat exchange between the serious heating position in the inside of the distribution box assembly and the liquid cooling plate 21 is facilitated, and better cooling of the distribution box assembly is achieved.
Next, as a preferred embodiment, an insulating member 42 is provided between the case 31 and the heat conductive member 41, and the insulating member 42 is provided at least corresponding to a connection point for connecting the copper bar 33 and each electrical component 32. Therefore, the electrical safety of the distribution box assembly can be improved, and risks such as short circuit and overheating are avoided.
In particular, in this embodiment, as a preferred embodiment, the thickness dimension t1 of the insulating member 42 is between 0.1 and 0.3mm, and the thickness dimension t2 of the heat conductive member 41 is between 3 and 5mm. And specifically, the thickness dimension t1 of the insulating member 42 may be set to 0.1mm, 0.2mm or 0.3mm, and the thickness dimension t2 of the heat conducting member 41 may be set to 3mm, 4mm or 5mm, which is advantageous in that insulation and heat conducting effects are ensured, and the safety of the distribution box assembly is further improved.
Further, as a preferred embodiment, as shown in fig. 4, the battery pack of the present embodiment further includes a BMS (battery management system) slave plate provided on the housing 31, and an electromagnetic shield provided between the BMS slave plate 6 and the housing 31. Therefore, the method is beneficial to improving the utilization rate of the whole package space, can also play a role in high-low voltage isolation, and is beneficial to the whole package EMC (electromagnetic compatibility of battery packages).
It should be noted that, the heat conducting member 41 of the present embodiment may specifically use heat conducting glue or heat conducting pad, the insulating member 42 of the present embodiment may specifically use insulating sheet, the electromagnetic shielding member may specifically use conductive cloth, and meanwhile, the BMS slave plate 6 may be located at one side of the housing 31 far from the liquid cooling plate 21 and connected with the housing 31 through bolts, so as to facilitate disassembly and maintenance.
The battery pack of this embodiment can realize the design of cooling to the serious position that generates heat in the block terminal assembly is inside, does benefit to the promotion to the cooling effect of block terminal assembly to can improve the overflow ability of block terminal assembly in limited space, thereby can do benefit to the demand that satisfies high-power quick charging car quick energy filling. The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A battery pack, characterized in that:
the power distribution box comprises a lower box body, and a liquid cooling plate and a power distribution box assembly which are arranged in the lower box body;
The distribution box assembly comprises a shell connected with the liquid cooling plate, and a plurality of electric parts arranged in the shell, wherein the electric parts are connected through a connecting copper bar, and at least part of the electric parts are arranged close to one side of the liquid cooling plate at the connecting point of the electric parts and the connecting copper bar.
2. The battery pack according to claim 1, wherein:
And a heat conducting piece is arranged between the shell and the liquid cooling plate.
3. The battery pack according to claim 2, wherein:
An insulating part is arranged between the shell and the heat conducting part, and the insulating part is at least arranged corresponding to the connection point of the connection copper bar and each electric part.
4. A battery pack according to claim 3, wherein:
The thickness dimension t1 of the insulation is between 0.1 and 0.3mm, and/or,
The thickness dimension t2 of the heat conducting member is between 3 and 5mm.
5. The battery pack according to claim 1, wherein:
The shell comprises a first sub-shell and a second sub-shell arranged on the first sub-shell, and each electric component and the connecting copper bar are arranged in a space surrounded by the first sub-shell and the second sub-shell;
And flexible pieces are arranged between the first sub-shell and each electrical piece, or between the second sub-shell and each electrical piece.
6. The battery pack according to claim 1, wherein:
The plurality of electrical components comprise a main positive contactor, a main negative contactor, a quick-charging positive contactor and a quick-charging negative contactor;
The main positive contactor, the main negative contactor, the quick charge positive contactor and the connection point of the quick charge negative contactor and the connection copper bar are all close to one side of the liquid cooling plate, and/or the main positive contactor and the quick charge positive contactor are connected in series through the connection copper bar, and the main negative contactor and the quick charge negative contactor are connected in series through the connection copper bar.
7. The battery pack according to claim 1, wherein:
the connection copper bars at least partially connected with the electric components are injection molded in the shell, and/or,
And a plurality of electrical interfaces are arranged on the connecting copper bars.
8. The battery pack according to claim 1, wherein:
the shell is connected with the lower box body through a connecting piece.
9. The battery pack of claim 8, wherein:
The shell body with be equipped with gasket and shock attenuation bush between the lower box, shock attenuation bush cover is located on the connecting piece, the gasket is located shock attenuation bush with between the head of connecting piece.
10. The battery pack according to any one of claims 1 to 9, wherein:
The battery pack also comprises a BMS slave plate arranged on the shell and an electromagnetic shielding piece arranged between the BMS slave plate and the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422818664.0U CN223552626U (en) | 2024-11-19 | 2024-11-19 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422818664.0U CN223552626U (en) | 2024-11-19 | 2024-11-19 | Battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223552626U true CN223552626U (en) | 2025-11-14 |
Family
ID=97633051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422818664.0U Active CN223552626U (en) | 2024-11-19 | 2024-11-19 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223552626U (en) |
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2024
- 2024-11-19 CN CN202422818664.0U patent/CN223552626U/en active Active
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