CN219832941U - Battery device - Google Patents
Battery device Download PDFInfo
- Publication number
- CN219832941U CN219832941U CN202321348011.XU CN202321348011U CN219832941U CN 219832941 U CN219832941 U CN 219832941U CN 202321348011 U CN202321348011 U CN 202321348011U CN 219832941 U CN219832941 U CN 219832941U
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- Prior art keywords
- battery
- support
- circuit board
- flexible circuit
- main body
- Prior art date
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- 230000008093 supporting effect Effects 0.000 claims description 28
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000006261 foam material Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to the technical field of batteries and discloses a battery device. The device comprises a battery, a busbar, a flexible circuit board and a support; the battery comprises a first surface, wherein the battery is provided with two polar posts on the first surface, and the two polar posts are arranged at intervals along a first direction; the bus bar is positioned on one side of the pole away from the first surface, and is in conductive connection with the pole; the flexible circuit board is positioned on one side of the battery corresponding to the first surface; the flexible circuit board comprises a main body part and a collecting part, wherein the main body part extends along a second direction, and the collecting part is positioned at the edge of the main body part extending along the second direction; the collecting part extends towards the bus bar relative to the main body part, and the collecting part is in conductive connection with the bus bar; the support is located between the flexible circuit board and the battery, and an absolute value of a height difference between a surface of the support facing away from the battery and a surface of the bus bar facing away from the battery is not more than 5mm.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery device.
Background
The battery device is an energy storage device and can supply power for electric equipment such as new energy automobiles. The battery device comprises a plurality of batteries, and adjacent batteries are in conductive connection through a bus bar at the position of a pole. In order to monitor the running state of the battery, a flexible circuit board is arranged in the battery device and comprises a collecting part, and the collecting part can be in conductive connection with the busbar so as to collect the voltage information of the battery. In addition, the output end of the flexible circuit board is connected with a battery management system (Battery Management System, BMS for short) through a low-voltage circuit, so that the BMS can monitor the running condition of the battery, discover the abnormal condition of the battery in time and reduce the risk of safety accidents of the battery device.
In the prior art, the flexible circuit board is located the surface of battery, and the busbar is located the surface of utmost point post, because the surface of utmost point post higher than the battery, consequently, there is the difference in height between flexible circuit board and the busbar, when connecting collection portion and busbar, the collection portion need take place great buckling to press close to the surface of busbar, the deformation of collection portion leads to taking place the pine easily between collection portion and the busbar and takes place to take off, connection reliability is not high, and then influences the collection of signal.
Disclosure of Invention
The utility model provides a battery device for improving connection reliability between a collection part of a flexible circuit board and a busbar.
The embodiment of the utility model provides a battery device, which comprises a battery, a busbar, a flexible circuit board and a support piece;
the battery comprises a first surface, wherein the first surface of the battery is provided with two polar posts, and the two polar posts are arranged at intervals along a first direction;
the bus bar is positioned on one side of the pole away from the first surface, and the bus bar is in conductive connection with the pole;
the flexible circuit board is positioned on one side of the battery corresponding to the first surface; the flexible circuit board comprises a main body part and a collecting part, wherein the main body part extends along a second direction, and the collecting part is positioned at the edge of the main body part extending along the second direction; the collecting part extends towards the busbar relative to the main body part, and the collecting part is in conductive connection with the busbar; the second direction and the first direction are parallel to the first surface, and the second direction and the first direction are perpendicular to each other;
the support is located between the flexible circuit board and the battery, and an absolute value of a height difference between a surface of the support facing away from the battery and a surface of the busbar facing away from the battery is not greater than 5mm.
The battery device provided by the embodiment of the utility model has the following beneficial effects:
in this battery device, be provided with support piece between flexible circuit board and the battery, support piece can raise the height of flexible circuit board to reduce the difference in height between flexible circuit board and the busbar, make when carrying out conductive connection with collection portion and busbar, can reduce the degree of buckling of collection portion, improve the reliability of being connected between collection portion and the busbar, make the connection of collection portion and busbar more firm, be difficult to take place to loosen.
Drawings
Fig. 1 is a schematic structural diagram of a battery device according to an embodiment of the present utility model;
fig. 2 is an exploded view of the battery device shown in fig. 1;
fig. 3 is a sectional view of A-A of the battery device shown in fig. 1.
Reference numerals:
10-battery; 11-pole; 11 A-A first pole; 11 b-a second pole; 12-an explosion-proof valve; 101-a first surface; 20-bus bars; 30-a flexible circuit board; 31-a main body; 32-an acquisition part; 40-supporting member; 401-a first via; 50-base.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to the accompanying drawings, it being apparent that the described embodiments are only some, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the battery device according to the embodiment of the present utility model includes a battery 10, where the battery 10 is the smallest energy storage unit inside the battery device, and a plurality of batteries 10 may be stacked along the second direction Y to form a battery pack, and one or more battery packs may be included in the battery device. For any battery 10, the battery 10 includes a first surface 101, and the battery 10 is provided with two poles 11 on the first surface 101, the polarities of the two poles 11 being opposite, and the two poles 11 being arranged at intervals along the first direction X. Wherein, the first direction X and the second direction Y are parallel to the first surface 101, and the first direction X and the second direction Y are perpendicular to each other.
The side of the pole 11 of the battery 10 facing away from the first surface 101 is provided with a busbar 20, the busbar 20 and the pole 11 being electrically connected, the busbar 20 being used for connecting different batteries 10 in series or in parallel.
With continued reference to fig. 1, the battery device further includes a flexible circuit board 30, where the flexible circuit board 30 is located on a side of the battery 10 corresponding to the first surface 101, and the flexible circuit board 30 specifically includes a main body portion 31, where the main body portion 31 has a strip-shaped structure and extends along the second direction Y. In particular, the position of the body 31 relative to the poles 11 includes a plurality of possibilities, and in one possible embodiment, the body 31 may be disposed between two poles 11 of the battery 10. In another possible embodiment, the first pole 11a and the second pole 11b are used to distinguish the two poles 11 of opposite polarity of the battery 10, and then the main body 31 may be disposed on a side of the first pole 11a of the battery 10 facing away from the second pole 11b, or on a side of the second pole 11b facing away from the first pole 11 a.
In addition to the main body 31, the flexible circuit board 30 further includes a collecting portion 32, the collecting portion 32 is located at an edge of the main body 31 extending in the second direction Y, and the collecting portion 32 protrudes toward the bus bar 20 with respect to the main body 31 and is electrically connected to the bus bar 20. In a state in which the collecting part 32 and the bus bar 20 are conducted, the flexible circuit board 30 can collect voltage information, temperature information, and other parameters of the battery 10 and transmit them to the BMS system, so that the BMS system can monitor the operating state of the battery 10.
In the embodiment shown in fig. 1, the main body 31 is disposed between the first pole 11a and the second pole 11b of the battery 10, and the main body 31 includes a first side edge and a second side edge extending along the second direction Y, where the first side edge is close to the first pole 11a, the second side edge is close to the second pole 11b, and the collecting portion 32 may be disposed at the first side edge or may be disposed at the second side edge.
The number of the collection units 32 is not limited, and may be specifically set according to the collection needs. When a plurality of collecting portions 32 are provided on the same side edge of the main body 31, different collecting portions 32 are provided at intervals.
Fig. 2 is an exploded view of the battery device shown in fig. 1, and as shown in fig. 2, a support 40 is further provided between the flexible circuit board 30 and the battery 10. In particular, the surface of the support 40 facing away from the battery 10 may be brought into contact with the bottom surface of the flexible circuit board 30, and the surface of the support 40 facing the battery 10 may be brought into contact with the first surface 101 of the battery 10. After the support member 40 is disposed between the flexible circuit board 30 and the battery 10, the support member 40 may serve as a support under the flexible circuit board 30, thereby lifting the flexible circuit board 30 away from the first surface 101 of the battery 10, so that a height difference between the flexible circuit board 30 and the bus bar 20 is reduced. Thus, when the collection portion 32 of the flexible circuit board 30 is electrically connected with the bus bar 20, the bending degree of the collection portion 32 can be reduced, the connection reliability between the collection portion 32 and the bus bar 20 is improved, and the collection portion 32 and the bus bar 20 are not easy to loose.
In order to reduce the height difference between the flexible circuit board 30 and the bus bar 20 as much as possible, the absolute value of the height difference between the surface of the support member 40 facing away from the battery 10 and the surface of the bus bar 20 facing away from the battery 10 may be not more than 5mm, for example, may be 0, 1mm, 2mm, 3mm, 4mm, 5mm, or other values between 0 and 5mm, when specifically provided, and the present utility model is not limited.
In the unfolded state, the relative positional relationship between the surface of the support 40 facing away from the battery 10 and the surface of the bus bar 20 facing away from the battery 10 includes the following cases: the surface of the support 40 facing away from the battery 10 is slightly higher than the surface of the busbar 20 facing away from the battery 10; alternatively, the surface of the support 40 facing away from the battery 10 and the surface of the busbar 20 facing away from the battery 10 are flush; still alternatively, the surface of the support 40 facing away from the battery 10 is slightly lower than the surface of the bus bar 20 facing away from the battery 10.
Fig. 3 is a cross-sectional view A-A of a battery device according to an embodiment of the present utility model, and as shown in fig. 3, a surface of the support member 40 facing away from the battery 10 is flush with a surface of the busbar 20 facing away from the battery 10. In consideration of the existence of errors, the surface of the support member 40 facing away from the battery 10 and the surface of the bus bar 20 facing away from the battery 10 allow a certain height difference to exist, and the absolute value of the height difference is not more than 5mm, so that under the support effect of the support member 40, the collecting portion 32 of the flexible circuit board 30 can be connected with the bus bar 20 in a straight state or a nearly straight state, thereby reducing the deformation amount of the collecting portion 32, increasing the contact area between the collecting portion 32 and the bus bar 20, and improving the connection reliability between the collecting portion 32 and the bus bar 20.
In the case of the number of the specific supporting members 40, the supporting members 40 may be two, three, four or other numbers, and the present utility model is not limited thereto.
In some embodiments, as shown in fig. 2, the number of the supporting members 40 is plural, and different supporting members 40 are disposed at intervals along the second direction Y. The length of each support 40 in the second direction Y is smaller than the length of the flexible circuit board 30 in the second direction Y with respect to the flexible circuit board 30. Because the length of the supporting member 40 along the second direction Y is shorter, when the supporting member 40 is disposed at the bottom of the flexible circuit board 30, the alignment between the supporting member 40 and the flexible circuit board 30 is more precise, so that the supporting member 40 can be prevented from deflecting relative to the flexible circuit board 30, and the mounting error is reduced.
In particular selecting the material from which the support member 40 is made, an insulating material may be used to make the support member 40 described above to ensure insulating contact between the support member 40 and the battery 10. The specific type of insulating material is not limited, and alternatively, the insulating material may be a foam material or a plastic material. Because of the lighter weight of the foam material, in an alternative embodiment, the support 40 may be made of a foam material to reduce the weight of the battery device.
In particular, the size of the support 40 is not limited, and the width of the support 40 in the first direction X and the length of the support 40 in the second direction Y are not limited. In a specific arrangement, taking the width of the flexible circuit board 30 along the first direction X as a reference, the width of the supporting member 40 along the first direction X may be slightly greater than the width of the flexible circuit board 30 along the first direction X, or may be equal to or slightly less than the width of the flexible circuit board 30 along the first direction X, which is not limited by the present utility model.
The length of the support 40 in the second direction Y may be such that the support 40 spans one cell 10 or a plurality of cells 10 in that direction, with reference to the number of cells 10. Also, the lengths of the supports 40 in the second direction Y may be the same or different for different supports 40. In the embodiment shown in fig. 1 and 2, the bottom of the flexible circuit board 30 is provided with two kinds of supporting members 40 having different lengths, and the supporting members 40 having different lengths can be flexibly combined to support the flexible circuit board 30 in the length direction of the flexible circuit board 30.
In connecting the support 40 and the flexible circuit board 30, various connection methods may be employed. In one possible connection, the main body 31 of the flexible circuit board 30 and the support 40 are bonded by glue. The above connection method does not need to provide other structures on the supporting member 40 and/or the flexible circuit board 30, and is simple to operate and can obtain a good fixing effect.
In another possible connection manner, one of the main body portion 31 of the flexible circuit board 30 and the supporting member 40 may be provided with a positioning protrusion, and the other may be provided with a positioning groove adapted to the positioning protrusion, and the positioning protrusion is caught in the positioning groove. Through locating the protruding card of location in the constant head tank, on the one hand can realize the relative fixation of flexible circuit board 30 and support 40, on the other hand can also realize the location in the connection process, guarantees the assembly precision of flexible circuit board 30 and support 40.
In yet another possible connection manner, the main body portion 31 of the flexible circuit board 30 and the supporting member 40 may be fixed by adhesion, or may be positioned by providing the above-mentioned positioning protrusions and positioning grooves to achieve positioning while adhesion.
In addition to the bonding or clamping manner for connecting the support member 40 and the flexible circuit board 30, other manners for connecting the support member 40 and the flexible circuit board 30 may be used, which is not illustrated in the present utility model.
When the support 40 and the battery 10 are connected, the support 40 and the battery 10 may be connected by adhesion, clamping, or the like. Alternatively, the support member 40 and the battery 10 may be provided in an unconstrained state, i.e., there is no connection between the support member 40 and the battery 10, so that the battery 10 may relatively move between the support member 40 and the battery 10 during expansion or contraction to reduce deformation of the support member 40.
In some embodiments, the battery 10 is further provided with an explosion-proof valve 12 at the first surface 101, the explosion-proof valve 12 being located between the two poles 11. In the case that the pressure inside the battery 10 is large, the structure of the explosion-proof valve 12 is damaged, so that the electrolyte, gas and other substances inside the battery 10 can be discharged through the damaged part, the pressure relief effect is achieved, and the explosion of the battery 10 is prevented.
When the support member 40 is disposed above the battery 10, the support member 40 may be disposed between the two poles 11, and in order to avoid the pressure release path of the battery 10, a first through hole 401 corresponding to the explosion-proof valve 12 may be disposed in the support member 40, so that the electrolyte, gas and other substances in the battery 10 may be smoothly discharged through the first through hole 401.
As shown in fig. 2, the support 40 and the flexible circuit board 30 are stacked in the third direction Z and are located between the two poles 11 of the battery 10. When specifically provided, the flexible circuit board 30 is provided with a second through hole corresponding to the explosion-proof valve 12 of the battery 10, and the second through hole and the first through hole 401 are at least partially overlapped. The second through hole 401 and the first through hole are formed by the explosion-proof valve 12 after explosion, and the exhaust of the gas provides an avoidance space, so that the smoothness of an exhaust path is ensured.
In particular, the number of the first through holes 401 of the support member 40 may be one, two, three or other, which is not limited by the present utility model. And since the length of the support 40 in the second direction Y is smaller than the length of the flexible circuit board 30 in the second direction Y, the number of the first through holes 401 may be smaller than the number of the second through holes.
Referring to fig. 1 and 2 together, the battery device further includes a plurality of bases 50, and the bases 50 are spaced apart along the first direction. For any one of the bases 50, the base 50 is located between the main body 31 of the flexible circuit board 30 and the battery 10, and the base 50 is connected to the main body 31 of the flexible circuit board 30 and the battery 10 at the same time, or it is understood that the flexible circuit board 30 is connected and fixed to the battery 10 through the base 50.
There are a variety of possible connection forms between the base 50 and the main body 31 of the flexible circuit board 30 and between the base 50 and the battery 10, such as adhesive or snap-fit, and the present utility model is not limited.
In particular, as shown in fig. 2, the base 50 is provided with a locking groove 501 adapted to the peripheral surface of the pole 11, and the base 50 is locked to the outside of the pole 11 by the locking groove 501 at the time of assembly, thereby being fixed to the battery 10.
The number of the card slots 501 is not limited, and specifically, the number of the card slots 501 may be one, two, or other numbers, which is not limited by the present utility model. When the number of the clamping grooves 501 corresponds to the number of the poles 11, the base 50 is connected to different poles 11 through the plurality of clamping grooves 501, and the poles 11 corresponding to the clamping grooves 501 may belong to the same battery 10 or different batteries 10.
The shape of the clamping groove 501 is not limited, and is specifically adapted to the shape of the pole 11, for example, when the pole 11 has a cylindrical structure, the clamping groove 501 is an arc-shaped clamping groove.
As shown in fig. 2, in one possible structure of the base 50, the base 50 extends along the first direction X, and the base 50 is provided with two arc-shaped clamping grooves 501, the two clamping grooves 501 are located at two ends of the base 50 along the first direction X, and when assembled, the base 50 is clamped on two poles 11 of the same battery 10 through the clamping grooves 501 at the ends.
Of course, in order to avoid the explosion-proof valve 12, the base 50 is also provided with a through hole at a position corresponding to the explosion-proof valve 12.
For any adjacent two bases 50, at least one of the above-described supports 40 is provided between the two bases 50. For example, one support member 40, two support members 40, or other number of support members 40 may be disposed between two adjacent bases 50, and the number of support members 40 is not limited by the present utility model.
It should be understood that the longer the length of the supporting member 40 along the second direction Y, the better the supporting effect on the flexible circuit board 30, however, when the length of the supporting member 40 along the second direction Y is too long, the supporting member 40 and the base 50 may interfere spatially, whereas when the length of the supporting member 40 along the second direction Y is too short, the supporting effect on the flexible circuit board 30 may be affected. In the concrete setting, L is 0 Representing the spacing of two adjacent pedestals 50 in the second direction Y, at L 1 Indicating the length of the support 40 in the second direction Y, L is as described above 0 And L 1 The size relationship between them can be set to 0.4L 0 ≤L 1 ≤0.99L 0 For example, L 1 Specifically, it may be 0.4L 0 、0.5L 0 、0.6L 0 、0.7L 0 、0.8L 0 、0.9L 0 、0.99L 0 Or other values that meet the above ranges.
In this way, the length of the supporting member 40 along the second direction Y is not too short, the supporting effect of the supporting member 40 on the flexible circuit board 30 is ensured, and a certain gap is reserved between the supporting member 40 and the base 50, so that a space is provided for deformation of the supporting member 40 and the base 50.
Optionally, the L 0 And L 1 The magnitude relation between the two can be further set to 0.6L 0 ≤L 1 ≤0.8L 0 For example, L 1 Specifically, it may be 0.6L 0 、0.65L 0 、0.7L 0 、0.75L 0 、0.8L 0 Or other values that meet the above ranges. By optimizing L 0 And L 1 The size relation between the base 50 and the adjacent support members 40 can make the support effect of the support members 40 better, and a certain gap is formed between the base 50 and the adjacent support members 40, so that the base 50 and the support members 40 cannot interfere in the expansion and deformation process of the battery 10.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A battery device, comprising a battery, a bus bar, a flexible circuit board and a support;
the battery comprises a first surface, wherein the first surface of the battery is provided with two polar posts, and the two polar posts are arranged at intervals along a first direction;
the bus bar is positioned on one side of the pole away from the first surface, and the bus bar is in conductive connection with the pole;
the flexible circuit board is positioned on one side of the battery corresponding to the first surface; the flexible circuit board comprises a main body part and a collecting part, wherein the main body part extends along a second direction, and the collecting part is positioned at the edge of the main body part extending along the second direction; the collecting part extends towards the busbar relative to the main body part, and the collecting part is in conductive connection with the busbar; the second direction and the first direction are parallel to the first surface, and the second direction and the first direction are perpendicular to each other;
the support is located between the flexible circuit board and the battery, and an absolute value of a height difference between a surface of the support facing away from the battery and a surface of the busbar facing away from the battery is not greater than 5mm.
2. The battery device of claim 1, wherein the number of the supporting members is plural, and the plural supporting members are arranged at intervals along the second direction.
3. The battery device according to claim 1 or 2, further comprising a plurality of bases, a plurality of the bases being disposed at intervals along the second direction; each base is positioned between the main body part and the battery, each base is connected with the main body part, and each base is connected with the battery;
at least one supporting piece is arranged between two adjacent bases.
4. A battery device according to claim 3, wherein the spacing between two adjacent bases in the second direction and the length of the support in the second direction satisfy the following relationship:
0.4L 0 ≤L 1 ≤0.99L 0
wherein L is 0 The distance between two adjacent bases along the second direction is set;
L 1 is the length of the support in the second direction.
5. The battery device of claim 4, wherein a spacing between two adjacent bases in the second direction and a length of the support in the second direction satisfy the following relationship:
0.6L 0 ≤L 1 ≤0.8L 0 。
6. the battery device according to claim 3, wherein the base is provided with a clamping groove adapted to the peripheral side surface of the pole, and the base is clamped outside the pole through the clamping groove.
7. The battery device according to claim 1 or 2, wherein one of the main body portion and the support member is provided with a positioning projection, and the other is provided with a positioning groove adapted to the positioning projection, and the positioning projection is caught in the positioning groove.
8. The battery device according to claim 1 or 2, wherein the main body portion and the support member are bonded.
9. The battery device according to claim 1 or 2, wherein the battery is further provided with an explosion-proof valve at the first surface, and the explosion-proof valve is located between the two poles;
the support piece is located between the two polar posts, and the support piece is provided with a first through hole corresponding to the explosion-proof valve.
10. The battery device of claim 1 or 2, wherein the support member is a foam structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321348011.XU CN219832941U (en) | 2023-05-30 | 2023-05-30 | Battery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321348011.XU CN219832941U (en) | 2023-05-30 | 2023-05-30 | Battery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219832941U true CN219832941U (en) | 2023-10-13 |
Family
ID=88278250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321348011.XU Active CN219832941U (en) | 2023-05-30 | 2023-05-30 | Battery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219832941U (en) |
-
2023
- 2023-05-30 CN CN202321348011.XU patent/CN219832941U/en active Active
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