Battery nickel sheet and battery module
By introducing buffer sections and folds into the battery nickel sheets, the problem of nickel sheet breakage caused by vibration is solved, achieving safety and stable connection of the battery module and extending the service life of the battery nickel sheets.
Patent Information
- Application Number
- CN202520316616.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-26
AI Technical Summary
During use, vibration can cause deformation of the nickel sheets in the battery module, generating stress that may lead to breakage after prolonged use.
Design a battery nickel sheet, including a nickel sheet body and a buffer section, the buffer section having folds and buffer holes for cushioning protection during vibration, reducing stress concentration and extending service life.
The buffer section provides buffer protection, reducing the impact of vibration on the nickel plates, ensuring the safety and stable connection of the battery module, and extending the service life of the battery nickel plates.
Smart Images
Figure CN223911819U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to battery parts technical field, concretely relates to a battery nickel sheet and battery module. BACKGROUND
[0002] Battery module is the key part in power battery system, has the advantages of high energy density, long cycle life and light weight, is widely used in electric automobile, energy storage system and consumer electronics etc. fields. Battery module mainly includes electric core, battery management system and shell etc., wherein, electric core is the basic unit of battery module, plays the role of storing and releasing electric energy. In battery module, a plurality of electric cores are connected through parallel or series connection to increase total voltage or total capacity.
[0003] At present, electric core and electric core, electric core and BMS can be connected through nickel sheet, nickel sheet is welded with electric core, can ensure that current is smoothly transmitted between electric cores.
[0004] However, battery module will produce more vibration in horizontal or vertical direction in actual use, nickel sheet produces stress due to vibration deformation, and the nickel sheet can be broken after long-term use. UTILITY MODEL CONTENTS
[0005] In order to solve the deficiencies of the prior art, the utility model provides a battery nickel sheet and battery module, the buffer part can play the role of buffering protection to the nickel sheet body when vibration occurs, which is helpful to improve the problem that the battery nickel sheet is easy to be broken due to stress in long-term use.
[0006] The technical effects achieved by the utility model are realized through the following technical aspects:
[0007] Firstly, the utility model provides a battery nickel sheet, which comprises a nickel sheet body for connecting with an electric core, and a buffer section connected with the nickel sheet body, wherein the buffer section comprises a folding part for shock absorption and buffering, the folding part comprises a plurality of bends, the plurality of bends are arranged alternately, and a buffer hole is formed in the folding part.
[0008] In some implementation modes, a connecting section is further arranged between the nickel sheet body and the buffer section, and a folding part is arranged between the connecting section and the buffer section.
[0009] In some implementation modes, the connecting section comprises a connecting area and a transition area, the connecting section is connected with the buffer section at the connecting area, and the connecting section is connected with the nickel sheet body at the transition area, wherein the width of the connecting area is greater than that of the transition area.
[0010] In some implementation modes, the bending angle of the bend is 20°-160°.
[0011] In some implementations, the folding part is divided into a plurality of fusing areas by the buffer hole in the width direction, and the fusing areas overcurrent protect the battery cell.
[0012] In some implementations, the width of the fusing area is 75% to 92% of the width of the folding part.
[0013] In some implementations, the nickel sheet body is provided with a positioning hole for fixing the nickel sheet body.
[0014] In some implementations, the nickel sheet body is provided with a connecting hole for connecting with the battery cell.
[0015] In some implementations, the thickness of the buffer section is 0.1mm to 2.0mm.
[0016] In the second aspect, the utility model provides a battery module which comprises the battery nickel sheet.
[0017] In summary, the utility model has at least the following advantages:
[0018] 1. The battery nickel sheet provided by the utility model is connected with the battery cell, and the current is transmitted between the battery cells through the nickel sheet body. During use, the battery nickel sheet may be subjected to horizontal or vertical vibration, the buffer section deforms under the influence of the vibration stress, the plurality of bending parts are straightened in the horizontal or vertical direction, and the folding part restores to the original state under the elastic action when the vibration ends, i.e. the stress disappears, so that the buffering protection effect is realized. The setting of the buffer hole can enhance the structural strength of the folding part, reduce stress concentration, and further ensure that the battery nickel sheet can maintain good buffering protection effect during long-time use.
[0019] 2. The battery module provided by the utility model is stably connected with the battery cell, can reduce the influence of the vibration of the battery module on the battery nickel sheet, and ensures the safety of the battery module in use. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a whole structure schematic view of the battery nickel sheet of the embodiment of the utility model.
[0021] Figure 2 It is a side view of the battery nickel sheet of the embodiment of the utility model.
[0022] Figure 3 It is a structure schematic view of the buffer section of the embodiment of the utility model.
[0023] Figure 4 It is a structure schematic view of the connecting section and the buffer section of the embodiment of the utility model.
[0024] Figure 5 For Figure 1 Another angle of the structural schematic view.
[0025] Marked in the figure:
[0026] 1, nickel sheet body; 11, positioning hole; 12, connecting hole; 13, welding part;
[0027] 2, buffer section; 21, folding part; 211, bending; 22, buffer hole; 23, fuse area; 24, extension;
[0028] 3, connecting section; 31, folding part; 32, connecting area; 33, transition area. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, rather than all the embodiments.
[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.
[0031] Example 1:
[0032] Please see Figures 1-3 The battery nickel sheet of the present application comprises a nickel sheet body 1 and a buffer section 2. When vibrating, the buffer section 2 can play a buffering protection role to improve the problem of easy breakage of the battery nickel sheet, thereby prolonging the service life of the battery nickel sheet and ensuring the safety of use.
[0033] The nickel sheet body 1 is connected with the battery cell. Specifically, the nickel sheet body 1 can be welded with the battery cell to realize series connection or parallel connection between multiple battery cells. The buffer section 2 is connected with the nickel sheet body 1. In a preferred embodiment, the thickness of the buffer section 2 is 0.1mm~2.0mm, such as 0.15mm, 0.1mm, 1.5mm or 2.0mm, etc. The buffer section 2 has good structural strength, thereby realizing good buffering effect.
[0034] The buffer section 2 comprises a folding part 21 for shock absorption and buffering, the folding part 21 comprises a plurality of bends 211, the plurality of bends 211 are staggered, the folding part 21 is in the shape of a folded sheet and in the shape of a wave in cross section, the folding part 21 has good shock absorption effect in both horizontal and vertical directions due to the staggered arrangement of the bends 211, and the battery nickel sheet can adapt to different assembly directions.
[0035] In some specific embodiments, the bends 211 can be provided with two, at this time, the cross section of the folding part 21 is Z-shaped, it can be understood that this is not a specific limitation on the number of bends 211, and those skilled in the art can select according to the actual specifications of the battery nickel sheet, for example, in another specific embodiment, the bends 211 can be provided with three, and the cross section of the folding part 21 is M-shaped.
[0036] In a preferred embodiment, the bending angle of the bend 211 is 20°-160°, for example, the bending angle can be 30°, 50°, 80°, 100°, 140° or 160°, etc., the buffer section 2 can be formed by one-time molding of the nickel-plated steel strip by the bend 211 mold, the stamping processing efficiency is high, and it is beneficial to ensure the structural strength of the folding part 21.
[0037] The folding part 21 is provided with a buffer hole 22, specifically, the buffer hole 22 can be a square hole, the provision of the buffer hole 22 can provide a space for deformation of the folding part 21 and reduce stress concentration, thereby enhancing the structural strength of the folding part 21, so that the buffer section 2 still has a certain shock absorption effect after long-term use.
[0038] When the buffer section 2 is deformed due to horizontal or vertical vibration, the bend 211 is straightened, the folding part 21 is in a state of extrusion or stretching, when the vibration ends, the straightened bend 211 restores to the original state under the action of elasticity, the folding part 21 plays a buffering protection role, at the same time, the buffer hole 22 can enhance the structural strength of the folding part 21, and the service life of the buffer section 2 can be relatively prolonged.
[0039] Embodiment 2:
[0040] The difference between this embodiment and embodiment 1 is that, please refer to Figure 4The battery nickel sheet of the embodiment further comprises a connecting section 3 arranged between the nickel sheet body 1 and the buffer section 2, and a folding portion 31 is arranged between the connecting section 3 and the buffer section 2. Specifically, the folding angle of the folding portion 31 can be 90°. It can be understood that this is not a specific limitation on the folding angle, and those skilled in the art can adjust it according to the actual assembly mode of the battery module. The buffer portion is flipped by a certain angle through the folding portion 31 relative to the connecting section 3, which is conducive to reducing the influence of the buffer deformation on the nickel sheet body 1, and the nickel sheet body 1 and the battery cell can be kept in stable connection. The folding portion 31 is formed by bending once through the bending die 211, which is convenient to process and simple in structure, and is conducive to improving the efficiency of battery nickel sheet production and battery module assembly.
[0041] In a preferred embodiment, the connecting section 3 can be a long strip-shaped sheet. The connecting section 3 comprises a connecting area 32 and a transition area 33. The connecting section 3 is connected to the buffer section 2 at the connecting area 32, and is connected to the nickel sheet body 1 at the transition area 33. The width of the connecting area 32 is greater than that of the transition area 33. The width adjustment of the connecting section 3 through the connecting area 32 and the transition area 33 can play a certain overcurrent protection role while ensuring the structural strength, thereby improving the safety in use.
[0042] In a preferred embodiment, the folding portion 21 is divided into a plurality of fuse areas 23 in the width direction through the buffer hole 22. When the battery nickel sheet is connected to the battery cell, the fuse area 23 can protect the battery cell from overcurrent. As shown in some specific embodiments, two fuse areas 23 are arranged, and the battery nickel sheet can detect the size of the current flowing through the buffer hole 22. When an abnormally large current flows in the buffer section 2, the fuse area 23 is fused to act as a fuse to play a safety protection role. Further, the width of the fuse area 23 is 75% to 92% of the width of the folding portion 21. For example, when the width of the folding portion 21 is 8 mm, the width of the fuse area 23 can be 3 mm, and the overcurrent capacity of the fuse area 23 can be 1 mm² overcurrent 8A. Those skilled in the art can adjust the width of the fuse area 23 according to the size of the current.
[0043] In a preferred embodiment, the folding portion 21 extends to form an extension portion 24 away from the nickel sheet body 1. The battery nickel sheet can be electrically connected to external elements such as FPC, etc. at the extension portion 24 to realize the transmission of electrical signals and the circulation of current.
[0044] Please refer to Figure 5 In a preferred embodiment, a plurality of positioning holes 11 for fixing the nickel sheet body 1 are arranged on the nickel sheet body 1. The positioning holes 11 are evenly distributed on the nickel sheet body 1. The nickel sheet body 1 can be locked on the BMS through the positioning holes 11 by screws to realize the positioning and assembly of the nickel sheet body 1.
[0045] In some specific embodiments, the nickel sheet body 1 is provided with a connecting hole 12 for connecting with the battery cell, and the nickel sheet body 1 can be welded with the battery cell at the connecting hole 12. Further, the nickel sheet body 1 comprises a welding portion 13, and the connecting hole 12 is provided on the welding portion 13, and the welding portion 13 is adapted to the battery cell, and specifically, the battery cell can be a cylindrical battery cell, and the welding portion 13 is in a round sheet shape adapted to the cylindrical battery cell, so as to ensure the structural strength of the welding of the nickel sheet body 1 with the battery cell.
[0046] Embodiment 3:
[0047] The embodiment provides a battery module based on the above-mentioned embodiments.
[0048] The battery module comprises the battery nickel sheet, wherein one side of the nickel sheet body 1 is provided with a battery cell, the battery cell can be connected with the nickel sheet body 1 through spot welding, the battery nickel sheet can be stably connected with the battery cell, meanwhile, the influence of the vibration of the battery module on the battery nickel sheet can be reduced by the buffer portion, and the safety of the battery module in use is ensured.
[0049] In the utility model, unless there is definite stipulation and limitation, the terms "mount", "link", "connect", "fix" and the like should be understood in a broad sense, for example, can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the communication of two elements or the interaction of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.
[0050] In the description of the utility model, it needs to be explained that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawing, or the orientation or positional relationship commonly placed when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.
[0051] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0052] In the utility model, unless another definite provision and limitation, first feature is above or below second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through additional feature between them.
[0053] Although the description of the utility model is combined with above specific embodiment, it is obvious that many substitutions, modifications and changes can be made according to the above-mentioned content by the person skilled in the art. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. A battery nickel sheet, characterized by, Comprising a nickel sheet body (1) for connecting with an electric cell; and a buffer section (2) connected with the nickel sheet body (1), the buffer section (2) comprising a folding part (21) for shock absorption and buffering, the folding part (21) comprising a plurality of bending parts (211) arranged alternately, and a buffer hole (22) being formed on the folding part (21).
2. The battery nickel sheet according to claim 1, wherein, Further comprising a connecting section (3) arranged between the nickel sheet body (1) and the buffer section (2), and a folding part (31) being arranged between the connecting section (3) and the buffer section (2).
3. The battery nickel sheet according to claim 2, wherein, The connecting section (3) comprises a connecting area (32) and a transition area (33), the connecting section (3) being connected with the buffer section (2) at the connecting area (32), and the connecting section (3) being connected with the nickel sheet body (1) at the transition area (33), the width of the connecting area (32) being greater than that of the transition area (33).
4. The battery nickel sheet according to claim 1, wherein, The bending angle of the bending part (211) is 20°-160°.
5. The battery nickel sheet of claim 1, wherein, The folding part (21) is divided into a plurality of fusing areas (23) in the width direction through the buffer hole (22), and the fusing areas (23) are used for over-current protection of the electric cell.
6. The battery nickel sheet according to claim 5, wherein, The width of the fusing area (23) is 75%-92% of the width of the folding part (21).
7. The battery nickel sheet of claim 1, wherein, The nickel sheet body (1) is provided with a positioning hole (11) for fixing the nickel sheet body (1).
8. The battery nickel sheet of claim 1, wherein, The nickel sheet body (1) is provided with a connecting hole (12) for connecting with the electric cell.
9. The battery nickel sheet of claim 1, wherein, The thickness of the buffer section (2) is 0.1mm-2.0mm.
10. A battery module, characterized by The battery nickel sheet comprises the battery nickel sheet according to any one of claims 1-9.