CN220493215U - Flexible circuit board with flexible connection structure and battery module - Google Patents
Flexible circuit board with flexible connection structure and battery module Download PDFInfo
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- CN220493215U CN220493215U CN202322089534.3U CN202322089534U CN220493215U CN 220493215 U CN220493215 U CN 220493215U CN 202322089534 U CN202322089534 U CN 202322089534U CN 220493215 U CN220493215 U CN 220493215U
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- circuit board
- bonding pad
- flexible circuit
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- 238000003466 welding Methods 0.000 claims abstract description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 68
- 229910052759 nickel Inorganic materials 0.000 claims description 34
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 239000011889 copper foil Substances 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 5
- 210000000988 bone and bone Anatomy 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 description 14
- 230000000670 limiting effect Effects 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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- Battery Mounting, Suspending (AREA)
Abstract
The application provides a flexible circuit board with flexible connection structure and battery module. The flexible circuit board main body comprises a flexible circuit board main body and a flexible connection structure. The flexible circuit board main body is used for being stuck on the surface of the bracket in the power battery; the flexible connection structure comprises a flexible line network structure and a bonding pad which are connected, and the flexible line network structure is connected with the flexible circuit board main body; the bonding pad is arranged on one side of the flexible line network structure far away from the flexible circuit board main body; the bonding pad is used for accommodating a welding structure, the bonding pad is used for being connected with the welding structure, and the flexible circuit board main body, the bonding pad and the flexible line network structure are of an integrated structure; the flexible connection structure and the bonding pads are all used for being movably arranged on the surface of the support inside the power battery. The flexible circuit board can simultaneously ensure the convenience of operation and the effectiveness of the voltage acquisition circuit.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a flexible circuit board with a flexible connection structure and a battery module.
Background
Generally, the internal wire harness of the battery module can be divided into a charging and discharging wire harness, a communication wire harness, a single-power-saving voltage acquisition wire harness and a temperature acquisition wire harness, wherein the communication wire harness, the single-power-saving voltage acquisition wire harness and the temperature acquisition wire harness are small-current circuits, and are connected by small-wire-diameter wires, so that the battery module is large in number, large in occupied space and high in path uncertainty of each wire, and the risks of line pressing and skin scraping and breaking are very easy to occur in the production process. At present, the light-weight requirement of the electric automobile is gradually improved, and the electric automobile is particularly outstanding on a two-wheeled electric automobile, so that the size of a battery pack shell is extremely compressed, the grouping process and the wire harness arrangement process of a battery pack module are more severe, the wire harness arrangement is usually considered in the design module stage, but the space requirement cannot be met by the ordinary wire harness connection process along with the compression of the battery pack space.
The flexible circuit board FPC's flexibility and plasticity can adapt to the different sizes and the shape of battery package, has good conductivity, high temperature resistant and corrosion resistance simultaneously, can ensure transmission and the stability of electric energy, is applicable to the aspect such as collection, the temperature signal collection of battery package module voltage signal, electric core heating, and because of FPC thickness is thin, the circuit is compact, but multilayer design, can reduce space occupation by a wide margin.
The current connection mode of the FPC and the module pressure electrode lug is as follows:
1) Rigid connection
The FPC is stuck to the surface of the bracket in the power battery through glue, and when the FPC is used as a single-voltage signal acquisition line, the pressure collecting lug of the single-string battery cell of the module is directly soldered or spot-welded on the FPC, so that the pressure collecting lug is fixedly connected to the FPC. Although the operation of rigid connection is simple and convenient, the FPC is used as an inner part of the power battery, so that the FPC and the pressure collecting electrode lugs welded on the FPC bear vibration and impact in the use process, a network in the FPC is easily pulled out, the pressure collecting electrode lugs fixedly connected with the FPC are easily broken, and the pressure collecting circuit is further disabled;
2) Flexible connection
The flexible connection mode is that a lead is used for connecting the FPC with the module pressure-collecting lug;
the flexible connection has the advantages that: the lead is arranged between the FPC and the pressure collecting tab, so that vibration and impact of the power battery are reduced, a buffering effect is achieved on pulling between the FPC and the pressure collecting tab, breakage of the pressure collecting tab is reduced, loosening and falling of welding spots are reduced, and failure of a pressure collecting circuit of the battery module is further reduced;
however, flexible connections suffer from the following disadvantages: because the wire is thinner, when connecting the wire in FPC and adopting and pressing the utmost point ear respectively, the operation is loaded down with trivial details, and the manual work is consuming time longer.
That is, the conventional connection manner of the FPC and the mining-pressing tab makes it difficult to simultaneously ensure the operational convenience and the effectiveness of the mining-pressing circuit.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a flexible circuit board with a flexible connection structure and a battery module, wherein the flexible circuit board can ensure the operation convenience and the effectiveness of a voltage acquisition circuit.
The aim of the utility model is realized by the following technical scheme:
a flexible circuit board with a flexible connection structure, comprising:
the flexible circuit board main body is used for being stuck on the surface of the bracket in the power battery;
the flexible connection structure comprises a flexible line network structure and a bonding pad which are connected, and the flexible line network structure is connected with the flexible circuit board main body; the bonding pad is arranged on one side of the flexible line network structure far away from the flexible circuit board main body; the bonding pad is used for accommodating a welding structure, the bonding pad is used for being connected with the welding structure, and the flexible circuit board main body, the bonding pad and the flexible line network structure are of an integrated structure;
the flexible connection structure and the bonding pads are all used for being movably arranged on the surface of the support inside the power battery.
In one embodiment, the length of the flexible line network structure is not less than 2mm.
In one embodiment, the width of the flexible line network structure is not less than 1.5mm.
In one embodiment, the flex network structure is a copper wire.
In one embodiment, the number of copper wires is one.
In one embodiment, the flexible circuit board main body comprises a bracket surrounding bone assembly and a main body network structure, wherein the main body network structure is arranged on the bracket surrounding bone assembly; and/or, the bonding pad is provided with a copper foil, and the copper foil is connected to the flexible line network structure.
The battery module comprises a support, single-string battery cells and the flexible circuit board with the flexible connection structure, wherein the flexible circuit board with the flexible connection structure is arranged on the surface of the support, the single-string battery cells are arranged in the support, the single-string battery cells are provided with pressure collecting lugs, and the pressure collecting lugs are connected to the bonding pads.
In one embodiment, the pressure collecting tab is welded to the bonding pad through a welding structure.
In one embodiment, the welding structure is a nickel sheet, the nickel sheet is attached to the bonding pad, and one surface of the nickel sheet, which is away from the bonding pad, is welded to the pressure collecting tab.
In one embodiment, the thickness of the nickel sheet is greater than the thickness of the mining-pressing tab.
In one embodiment, the bonding pad is provided with a patch area, and the nickel sheet is arranged in the patch area.
In one embodiment, the nickel plate is provided with an exhaust hole.
In one embodiment, the pressure collecting tab is provided with a welding end, and the welding end is welded on the nickel sheet.
In one embodiment, the part of the nickel sheet exposed to the pressure collecting tab is covered with a polyimide film.
In one embodiment, the support is provided with a calibration portion, the flexible circuit board main body is provided with a calibration hole, and the calibration portion is arranged in the calibration hole in a penetrating mode.
Compared with the prior art, the utility model has at least the following advantages:
1) According to the flexible circuit board with the flexible connection structure, the flexible circuit board main body, the flexible line network structure and the bonding pad are sequentially connected, and the bonding pad is welded to the pressure collecting lug through the welding structure, so that a pressure collecting circuit is formed.
2) The flexible circuit board with the flexible connection structure has the advantages that the flexible network structure replaces the traditional lead, the flexible network structure and the flexible circuit board main body are of an integrated structure, the problems that the traditional flexible connection mode needs to connect a thinner lead to the flexible circuit board main body to cause complex operation and higher operation difficulty are solved, the bonding pad is relatively wider than the traditional lead, the bonding pad is relatively easy to connect with the pressure collecting electrode lug, the welding area is enlarged, the flexible connection structure and the bonding pad are both used for being movably arranged on the surface of the support in the power battery, the damage of the support to the pressure collecting electrode lug caused by the limiting effect of the support on the pressure collecting electrode lug is reduced, the flexible network structure has better flexibility, the flexible network structure plays a better buffering role on the flexible circuit board main body and the pressure collecting electrode lug, the breakage of the pressure collecting electrode lug is reduced, the loosening and the falling of the welding point are reduced, the operation convenience and the effectiveness of the pressure collecting circuit are ensured, and the labor time is shortened.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a partial schematic view of a battery module according to an embodiment of the present utility model;
fig. 2 is a partial schematic view of the battery module shown in fig. 1 at a;
fig. 3 is a schematic structural diagram of a flexible circuit board with a flexible connection structure according to an embodiment of the present utility model;
FIG. 4 is a partial schematic view of the flexible circuit board with flexible connection structure shown in FIG. 3 at B;
fig. 5 is a partial schematic view of the flexible circuit board with flexible connection structure shown in fig. 3 at C.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 3 to 4 together, a flexible circuit board 10 with a flexible connection structure according to an embodiment includes a flexible circuit board main body 100 and a flexible connection structure 200. The flexible circuit board main body 100 is used for being stuck on the surface of a bracket inside the power battery; the flexible connection structure 200 includes a flexible line network structure 210 and a pad 220 connected. The flexible line network structure 210 is connected to the flexible circuit board main body 100; the bonding pad 220 is disposed at a side of the flexible line network structure 210 away from the flexible circuit board main body 100; the bonding pad 220 is used for accommodating the soldering structure 300, the bonding pad 220 is used for being connected with the soldering structure 300, and the flexible circuit board main body 100, the bonding pad 220 and the flexible line network structure 210 are integrated into a whole; the flexible connection structure 200 and the bonding pad 220 are both used for movably arranging the surface of the bracket 20 inside the power battery.
The flexible circuit board 10 with the flexible connection structure, the flexible circuit board main body 100, the flexible network structure 210 and the bonding pad 220 are sequentially connected, and the bonding pad 220 is welded to the voltage collecting tab 400 through the welding structure 300, so as to form a voltage collecting circuit.
Further, the flexible line network structure 210 has replaced traditional wire, and flexible line network structure 210 with flexible line way 100 is integrated into one piece structure, avoided traditional flexible connection mode to need connect thinner wire in flexible line way board main part and cause the problem that complex operation and operation degree of difficulty are higher, and pad 220 is wider than traditional wire for pad 220 is easier to connect in adopting and presses utmost point ear 400, and has increased the area that can be used for the welded, and flexible connection structure 200 with pad 220 all is used for the activity to set up the inside support 20 surface of power battery, has reduced the damage that the spacing effect of support 20 to adopting and pressing utmost point ear 400 led to the fact to adopting and pressing utmost point ear 400, and flexible line network structure 210 has better flexibility for flexible line network structure 210 plays better cushioning effect to flexible line way board main part 100 and adopting and pressing between the utmost point ear 400, has reduced the fracture of adopting and has reduced the solder joint and has fallen, and has ensured the efficiency of operation convenience and adopting and the circuit simultaneously, and has reduced the manual work is consuming time.
Referring to fig. 3 to 4, in one embodiment, the length of the flexible network structure 210 is not less than 2mm. It can be appreciated that the length of the flexible line network structure 210 is longer, so that a better buffering effect can be achieved between the flexible circuit board main body 100 and the pressure collecting and pressing tab 400, the breakage of the pressure collecting and pressing tab 400 is reduced, the loosening and falling of welding spots are reduced, and the effectiveness of the pressure collecting and pressing circuit is further ensured.
Referring to fig. 3 to 4, in one embodiment, the width of the flexible network structure 210 is not less than 1.5mm. It can be appreciated that the width of the flexible network structure 210 is large, so that the flexible network structure 210 is not easy to break, and thus the flexible circuit board is easy to manufacture.
Referring to fig. 3 to 4, in one embodiment, the flexible network structure 210 is a copper wire. It can be appreciated that the copper wire has better conductivity, thereby forming a voltage acquisition circuit.
Referring to fig. 3, in one embodiment, the number of copper wires is one. It can be understood that the structural strength of the copper wire is improved, and the production convenience of the flexible circuit board is improved.
Referring to fig. 3 to 4, in one embodiment, the flexible circuit board main body 100 includes a bracket 20 surrounding frame assembly and a main body network structure 110, and the main body network structure 110 is disposed on the bracket 20 surrounding frame assembly. It can be appreciated that the frame 20 provides support for the main body network structure 110, thereby improving the structural strength of the flexible circuit board main body 100.
Referring to fig. 3 to 4, in one embodiment, a copper foil is disposed on the pad 220, and the copper foil is connected to the flexible network structure 210. It can be appreciated that the copper foil has better conductivity, thereby forming a voltage acquisition circuit.
Referring to fig. 1 to 2, a battery module 10A is provided. The battery module 10A includes a support 20, a single-string battery cell 30, and the flexible circuit board 10 with a flexible connection structure according to any of the foregoing embodiments, where the flexible circuit board 10 with a flexible connection structure is disposed on the surface of the support 20, the single-string battery cell 30 is disposed in the support 20, the single-string battery cell 30 is provided with a voltage collecting tab 400, and the voltage collecting tab 400 is connected to the bonding pad 220.
In the above battery module 10A, the bracket 20 protects the single-string battery cells 30, and supports and limits the flexible circuit board and the pressure-collecting tab 400; the flexible circuit board forms a circuit with the single-string battery cells 30 through the voltage collecting lugs 400 on the single-string battery cells 30.
Referring to fig. 1 to 2, in one embodiment, the pick-and-press tab 400 is welded to the bonding pad 220 through the welding structure 300, so as to ensure the connection stability between the pick-and-press tab 400 and the bonding pad 220.
Referring to fig. 1 to 2, in one embodiment, the welding structure 300 is a nickel sheet 310, the nickel sheet 310 is attached to the bonding pad 220, and one surface of the nickel sheet 310 facing away from the bonding pad 220 is welded to the pressure collecting tab 400, and the nickel sheet 310 is a better welding material.
Referring to fig. 1 to 2, in one embodiment, the thickness of the nickel sheet 310 is greater than the thickness of the pressure electrode tab 400, so as to facilitate resistance welding.
Referring to fig. 3 to 4, in one embodiment, the pad 220 is provided with a patch area 510, and the nickel sheet 310 is disposed in the patch area 510. It can be appreciated that one surface of the nickel sheet 310 is adhered to the patch area 510 of the bonding pad 220, and the other surface of the nickel sheet 310 is welded to the pressure electrode tab 400, so as to connect the pressure electrode tab 400 with the bonding pad 220.
Referring to fig. 3 to 4, in one embodiment, the nickel plate 310 is provided with a vent hole for exhausting.
Referring to fig. 3 to 4, in one embodiment, the pressure collecting tab 400 is provided with a welding end, and the welding end is welded to the nickel plate 310. It can be understood that the welding end of the collecting and pressing tab 400 is welded on the nickel sheet 310, that is, the collecting and pressing tab 400 is partially welded on the nickel sheet 310, so that the damage of welding to the collecting and pressing tab 400 is reduced, and the quality of the battery module 10A is further ensured.
Referring to fig. 3 to fig. 4, in one embodiment, a portion of the nickel plate 310 exposed to the pressure electrode tab 400 is covered with a polyimide film. It can be understood that after the welding of the nickel sheet 310 and the pressure collecting tab 400 is completed, the pressure collecting tab 400 is not completely covered on the nickel sheet 310, i.e. the nickel sheet 310 is partially exposed on the pressure collecting tab 400, so that after the welding is completed, the portion of the nickel sheet 310 exposed on the pressure collecting tab 400 is covered with a polyimide film, and the polyimide film protects the nickel sheet 310.
Referring to fig. 5, in one embodiment, the bracket 20 is provided with a calibration portion, the flexible circuit board main body 100 is provided with a calibration hole 101, and the calibration portion is disposed through the calibration hole 101. It can be understood that when the flexible circuit board is mounted on the support 20, the calibration portion of the support 20 is made to penetrate through the calibration hole 101, so that the bonding pad 220 is aligned with the pressure collecting tab 400, connection stability between the bonding pad 220 and the pressure collecting tab 400 is ensured, breakage of the pressure collecting tab 400 is reduced, loosening and falling of welding spots are reduced, welding is easy after calibration, operation convenience and effectiveness of the pressure collecting circuit are ensured, and labor time consumption is reduced.
Compared with the prior art, the utility model has at least the following advantages:
1) According to the flexible circuit board 10 with the flexible connection structure, the flexible circuit board main body 100, the flexible network structure 210 and the bonding pad 220 are sequentially connected, and the bonding pad 220 is welded to the voltage collecting tab 400 through the welding structure 300, so that a voltage collecting circuit is formed.
2) According to the flexible circuit board 10 with the flexible connection structure, the flexible line network structure 210 replaces the traditional lead, the flexible line network structure 210 and the flexible circuit board main body 100 are of an integrated structure, the problems that the traditional flexible connection mode needs to connect a thinner lead with the flexible circuit board main body to cause complex operation and higher operation difficulty are solved, the bonding pad 220 is wider than the traditional lead, the bonding pad 220 is easier to connect with the pressure collecting tab 400, the welding area is enlarged, the flexible connection structure 200 and the bonding pad 220 are both used for being movably arranged on the surface of the support 20 in the power battery, the damage of the support 20 on the pressure collecting tab 400 caused by the limiting effect of the support 20 on the pressure collecting tab 400 is reduced, the flexible line network structure 210 has better flexibility, the flexible line network structure 210 has a better buffering effect on the space between the flexible circuit board main body 100 and the pressure collecting tab 400, the breakage of the pressure collecting tab 400 is reduced, the looseness and the falling of the pressure collecting tab 400 are reduced, and the convenience in operation and the time consumption of a manual operation is reduced.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A flexible circuit board with a flexible connection structure, comprising:
the flexible circuit board main body is used for being stuck on the surface of the bracket in the power battery;
the flexible connection structure comprises a flexible line network structure and a bonding pad which are connected, and the flexible line network structure is connected with the flexible circuit board main body; the bonding pad is arranged on one side of the flexible line network structure far away from the flexible circuit board main body; the bonding pad is used for accommodating a welding structure, the bonding pad is used for being connected with the welding structure, and the flexible circuit board main body, the bonding pad and the flexible line network structure are of an integrated structure;
the flexible connection structure and the bonding pads are all used for being movably arranged on the surface of the support inside the power battery.
2. The flexible wiring board with flexible connection structure according to claim 1, wherein the length of the flexible wiring network structure is not less than 2mm; and/or the number of the groups of groups,
the width of the flexible line network structure is not less than 1.5mm.
3. The flexible circuit board with flexible connection structure of claim 1 wherein the flexible line network structure is copper wire.
4. The flexible wiring board with flexible connection structure as claimed in claim 3, wherein the number of copper wires is one.
5. The flexible circuit board with flexible connection structure of claim 1, wherein the flexible circuit board body comprises a bracket surrounding bone assembly and a main body line network structure, the main body line network structure being disposed on the bracket surrounding bone assembly; and/or the number of the groups of groups,
and the bonding pad is provided with a copper foil which is connected with the flexible line network structure.
6. The battery module is characterized by comprising a support, a single-string battery cell and the flexible circuit board with the flexible connection structure, wherein the flexible circuit board with the flexible connection structure is arranged on the surface of the support, the single-string battery cell is arranged in the support, the single-string battery cell is provided with a pressure collecting tab, and the pressure collecting tab is connected to the bonding pad.
7. The battery module of claim 6, wherein the crimp tabs are welded to the bonding pads by a welded structure.
8. The battery module of claim 7, wherein the welding structure is a nickel sheet, the nickel sheet is attached to the bonding pad, and one surface of the nickel sheet, which is away from the bonding pad, is welded to the pressure collecting tab.
9. The battery module of claim 8, wherein the nickel plate has a thickness greater than the thickness of the crimp tab; and/or the number of the groups of groups,
the bonding pad is provided with a patch area, and the nickel sheet is arranged in the patch area; and/or the number of the groups of groups,
the nickel sheet is provided with an exhaust hole; and/or the number of the groups of groups,
the pressure collecting tab is provided with a welding end which is welded on the nickel sheet; and/or the number of the groups of groups,
and polyimide films are covered on the parts of the nickel plates exposed out of the pressure collecting lugs.
10. The battery module according to claim 7, wherein the bracket is provided with a calibration portion, the flexible circuit board main body is provided with a calibration hole, and the calibration portion is provided through the calibration hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322089534.3U CN220493215U (en) | 2023-08-03 | 2023-08-03 | Flexible circuit board with flexible connection structure and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322089534.3U CN220493215U (en) | 2023-08-03 | 2023-08-03 | Flexible circuit board with flexible connection structure and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220493215U true CN220493215U (en) | 2024-02-13 |
Family
ID=89827071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322089534.3U Active CN220493215U (en) | 2023-08-03 | 2023-08-03 | Flexible circuit board with flexible connection structure and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220493215U (en) |
-
2023
- 2023-08-03 CN CN202322089534.3U patent/CN220493215U/en active Active
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