Battery pack and electric equipment
By integrating the chip and nickel sheet into a single design, the printed circuit board is eliminated, solving the problem of numerous components in the battery protection board and achieving cost reduction, simplified processing, and improved space utilization.
Patent Information
- Application Number
- CN202423139116.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The battery protection board has a large number of parts, resulting in high cost, complex processing steps, and large space occupation.
It adopts an integrated chip and nickel plate design, eliminating the printed circuit board. It is connected to the nickel plate through tabs. The integrated chip and tabs are arranged at intervals, and an extension section is added to support and stabilize the connection.
Reduce the number of parts, lower costs and weight, simplify manufacturing processes, improve space utilization and circuit safety, and enhance connection reliability.
Smart Images
Figure CN223712813U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery pack technical field, concretely relates to battery pack and electric equipment. BACKGROUND
[0002] In the related art, the battery pack includes a battery protection plate and a battery cell, the battery protection plate includes a printed circuit board (PCB), an integrated circuit (IC), and a metal oxide semiconductor field effect transistor (MOSFET, MOS), the integrated circuit and the metal oxide semiconductor field effect transistor are both mounted on the printed circuit board, and the printed circuit board is connected to the tab of the battery cell through a nickel sheet.
[0003] The battery pack in the related art has a large number of parts in the battery protection plate, which results in high cost, complex processing steps, and large space occupation. SUMMARY
[0004] Therefore, the utility model provides a battery pack and electric equipment to solve the problem of a large number of parts in the battery protection plate, high cost, complex processing steps, and large space occupation.
[0005] In a first aspect, the utility model provides a battery pack, which includes: a battery cell, the battery cell is provided with a tab on one side along a first direction; a battery protection plate, the tab and the battery protection plate are provided on the same side of the battery cell, the battery protection plate includes an integrated chip and a nickel sheet, the integrated chip and the nickel sheet are integrated into an integrated structure, the nickel sheet is connected to the tab, the integrated chip and the tab are arranged at intervals along a second direction, and the first direction and the second direction are arranged at an intersection.
[0006] Advantages: through integrated chip and nickel sheet integrated design, connecting the tab and the nickel sheet can complete the connection between the battery protection plate and the battery cell, the battery protection plate does not need to be provided with a printed circuit board, the number of parts is reduced, the cost and the weight are reduced, the structure of the battery protection plate is simplified, the connection between the battery protection plate and the battery cell is simple, and the connection between the printed circuit board and the integrated chip is not needed, the patching step is omitted, the processing technology of the battery protection plate is simplified, and the space utilization of the battery pack is improved.
[0007] In an optional implementation, the battery cell comprises a shell, and the tab is connected to one side of the shell along the first direction; the nickel sheet comprises: a first extension section connected to the tab and extending along the first direction, and one end of the first extension section away from the shell beyond one end of the tab away from the shell along the first direction; and a second extension section connected to one end of the first extension section away from the shell along the first direction, the second extension section extending along the second direction, and the integrated chip being connected to the second extension section.
[0008] Beneficial effects: the integrated chip and the tab are spaced apart along the second direction, the probability of contact between the integrated chip and the tab is reduced, the integrated chip does not affect the connection between the tab and the nickel sheet, the safety of the circuit is improved, and the assembly is convenient.
[0009] In an optional implementation, the first extension section is connected to one side of the tab along a third direction, and the first direction, the second direction and the third direction are arranged to intersect with each other; and the second extension section is connected to one side of the first extension section away from the tab along the third direction.
[0010] Beneficial effects: the connection area between the first extension section and the tab is increased, which is conducive to ensuring the stability of the relative position between the battery protection plate and the battery cell.
[0011] In an optional implementation, the nickel sheet further comprises: a third extension section connected to one end of the first extension section away from the shell along the first direction and extending away from the tab along the third direction, and one end of the third extension section away from the first extension section along the third direction being connected to the second extension section.
[0012] Beneficial effects: by arranging the third extension section, the distance between the second extension section and the tab along the third direction is increased, and the probability of contact between the integrated chip and the tab is further reduced.
[0013] In an optional implementation, one side of the second extension section away from the shell along the first direction is connected to the integrated chip.
[0014] Beneficial effects: when the battery pack is vertically placed, the second extension section can support the integrated chip, avoid the integrated chip from being separated from the nickel sheet under the action of gravity, and improve the connection reliability between the integrated chip and the nickel sheet. In addition, the distance between the integrated chip and the battery cell along the first direction is increased, and the probability of interference between the integrated chip and the tab is reduced.
[0015] In an optional implementation, the first extension section abuts against the shell.
[0016] Beneficial effects: the shell can support the nickel sheet, and then the battery cell can support the battery protection plate, which is conducive to ensuring the reliable connection and stable relative position between the battery cell and the battery protection plate.
[0017] In an alternative embodiment, the battery cell includes two of the tabs, one of which is a positive tab and the other is a negative tab, and the positive tab and the negative tab are located on opposite sides of the integrated chip along the second direction; the battery protection plate includes a plurality of nickel sheets, one of which is a positive nickel sheet and the other is a negative nickel sheet, and the positive nickel sheet is connected with the positive tab and the negative nickel sheet is connected with the negative tab.
[0018] Beneficial effects: by connecting the positive nickel sheet and the negative nickel sheet with the battery cell, the connection points between the battery cell and the battery protection plate are increased, which is conducive to ensuring the relative position between the battery cell and the battery protection plate, and when the battery pack is vertically placed, the battery cell can more effectively support the battery protection plate, improving the reliability of the electrical connection between the battery protection plate and the battery cell.
[0019] In an alternative embodiment, the battery protection plate further includes: a flexible circuit board, which is located on the same side of the shell as the battery protection plate along the first direction, and the integrated chip is connected with the flexible circuit board.
[0020] Beneficial effects: by setting the flexible circuit board, the area of the battery protection plate can be increased, the heat dissipation capacity of the battery protection plate can be improved, heat accumulation on the integrated chip can be avoided, and the working performance of the battery protection plate can be improved.
[0021] In an alternative embodiment, the integrated chip includes an integrated circuit module and a field effect tube module, and the integrated circuit module and the field effect tube module are electrically connected, and both the integrated circuit module and the field effect tube module are electrically connected with the nickel sheet.
[0022] Beneficial effects: the integrated circuit module and the field effect tube module are integrated, which can save space, reduce solder joints, simplify the process flow, and improve production efficiency.
[0023] In a second aspect, the utility model also provides a kind of electric equipment, including the battery pack of first aspect.
[0024] Beneficial effects: the electric equipment of the utility model utilizes the battery pack of first aspect, can not need to set printed circuit board, can reduce cost, simplify production step, improve space utilization. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0026] Fig. 1 The connection schematic diagram of the battery protection plate and the battery cell of the embodiment of the present application;
[0027] Fig. 2 The partial schematic diagram one of the connection of the battery protection plate and the battery cell of the embodiment of the present application;
[0028] Fig. 3 The partial schematic diagram two of the connection of the battery protection plate and the battery cell of the embodiment of the present application.
[0029] Explanation of reference signs:
[0030] 100, battery cell; 110, tab; 111, positive tab; 112, negative tab; 120, shell;
[0031] 200, battery protection plate; 210, integrated chip; 220, nickel sheet; 221, first extension section; 222, second extension section; 223, third extension section; 230, positive nickel sheet; 240, negative nickel sheet; 250, flexible circuit board;
[0032] X, first direction; Y, second direction; Z, third direction. Specific embodiments
[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0034] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.
[0035] In the description of the utility model, the meaning of "multiple" is two or more than two. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0036] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0037] The embodiments of the utility model will be described below in combination with Figs. 1-3
[0038] According to the embodiments of the utility model, on the one hand, a battery pack is provided, the battery pack has a first direction X and a second direction Y intersecting, the battery pack includes a battery cell 100 and a battery protection plate 200. Wherein, the battery pack can be a lithium battery pack.
[0039] The battery cell 100 is provided with a tab 110 on one side along the first direction X, specifically, the battery cell 100 includes a shell 120, the shell 120 is connected with the tab 110 on one side along the first direction X, the battery protection plate 200 is arranged on the same side of the shell 120 along the first direction X with the tab 110, the battery protection plate 200 includes an integrated chip 210 and a nickel sheet 220, the integrated chip 210 and the nickel sheet 220 are integrated into an integral structure, the nickel sheet 220 is connected with the tab 110, and the integrated chip 210 and the tab 110 are arranged along the second direction Y. Wherein, the tab 110 and the nickel sheet 220 can be welded.
[0040] By integrating the chip 210 and the nickel sheet 220, and connecting the tab 110 and the nickel sheet 220, the connection between the battery protection plate 200 and the battery cell 100 can be completed, the battery protection plate 200 does not need to be provided with a printed circuit board, the number of parts is reduced, the cost and weight are reduced, the structure of the battery protection plate 200 is simplified, the connection between the battery protection plate 200 and the battery cell 100 is simple, and the connection between the printed circuit board and the integrated chip 210 is not needed, the patching step is omitted, the processing technology of the battery protection plate 200 is simplified, and the space utilization of the battery pack is improved.
[0041] In the technical scheme of the embodiment, the integrated chip 210 includes an integrated circuit module and a field effect tube module, the integrated circuit module and the field effect tube module are electrically connected, and the integrated circuit module and the field effect tube module are electrically connected with the nickel sheet 220.
[0042] That is, the integrated circuit module and the field effect tube module are integrated, the integrated circuit module and the field effect tube module are arranged more compactly, the space for arranging parts can be saved, the integrated circuit module and the field effect tube module can share the welding points with the nickel sheet 220, and the integrated circuit module and the field effect tube module can share the welding points with the flexible circuit board 250, which is beneficial to reduce the welding points, simplify the process flow, and improve the production efficiency.
[0043] As shown in Figs. 1-3 In the technical scheme of the embodiment, the nickel sheet 220 includes a first extension section 221 and a second extension section 222.
[0044] The first extension section 221 is connected with the tab 110 and extends along the first direction X, and along the first direction X, one end of the first extension section 221 away from the shell 120 is beyond one end of the tab 110 away from the shell 120. The second extension section 222 is connected with one end of the first extension section 221 away from the shell 120 along the first direction X, the second extension section 222 extends along the second direction Y, and the integrated chip 210 is connected with the second extension section 222.
[0045] In this way, the integrated chip 210 and the tab 110 can be arranged at intervals along the second direction Y, the probability of contact between the integrated chip 210 and the tab 110 is reduced, the tab 110 is prevented from being affected by the integrated chip 210 when the tab 110 is connected with the nickel sheet 220, the circuit safety is improved, and the assembly convenience is improved.
[0046] Specifically, the first extending section 221 abuts against the shell 120 of the battery cell 100. In this way, the shell 120 of the battery cell 100 can support the nickel sheet 220, and then the battery cell 100 can support the battery protection plate 200. When the battery pack is vertically placed, that is, the side of the battery pack along the first direction X away from the battery protection plate 200 is located below, and the side of the battery pack along the first direction X toward the battery protection plate 200 is located above, the battery cell 100 can support the battery protection plate 200, which is conducive to ensuring the reliable connection and stable relative position between the battery cell 100 and the battery protection plate 200, and improving the use reliability of the battery pack.
[0047] In addition, the second extending section 222 is connected to the integrated chip 210 on the side away from the shell 120 along the first direction X. In this way, when the battery pack is vertically placed, the second extending section 222 can support the integrated chip 210, avoiding the integrated chip 210 from being separated from the nickel sheet 220 under the action of gravity, and improving the connection reliability between the integrated chip 210 and the nickel sheet 220. Moreover, the distance between the integrated chip 210 and the battery cell 100 along the first direction X can be increased, and the probability of interference between the integrated chip 210 and the tab 110 can be reduced.
[0048] Further, the battery pack also has a third direction Z intersecting the first direction X and the second direction Y, wherein the first direction X, the second direction Y and the third direction Z can be arranged perpendicular to each other. The first extending section 221 is connected to the side of the tab 110 along the third direction Z, so that the connection area between the first extending section 221 and the tab 110 increases the connection strength between the first extending section 221 and the tab 110, which is conducive to ensuring the stable relative position between the battery protection plate 200 and the battery cell 100.
[0049] In addition, the second extending section 222 is connected to the side of the first extending section 221 away from the tab 110 along the third direction Z. In this way, the second extending section 222 and the tab 110 are arranged staggered along the third direction Z, which can reduce the probability of contact between the integrated chip 210 and the tab 110.
[0050] Further, the nickel sheet 220 also includes a third extending section 223, the third extending section 223 is connected to the end of the first extending section 221 away from the shell 120 along the first direction X, and the third extending section 223 extends away from the tab 110 along the third direction Z, and the end of the third extending section 223 away from the first extending section 221 along the third direction Z is connected to the second extending section 222.
[0051] Among them, the first extending section 221, the second extending section 222 and the third extending section 223 can be integrally formed, so as to increase the connection strength between the first extending section 221, the second extending section 222 and the third extending section 223, and be conducive to improving the structural strength of the nickel sheet 220.
[0052] By setting the third extension segment 223, the spacing between the second extension segment 222 and the tab 110 along the third direction Z can be increased, further reducing the probability of contact between the integrated chip 210 and the tab 110.
[0053] like Figs. 1-3 As shown, in this embodiment, the battery cell 100 includes two tabs 110, one of which is a positive tab 111 and the other is a negative tab 112. The positive tab 111 and the negative tab 112 are located on opposite sides of the integrated chip 210 along the second direction Y. The battery protection board 200 includes multiple nickel plates 220, one of which is a positive nickel plate 230 and the other is a negative nickel plate 240. The positive nickel plate 230 is connected to the positive tab 111, and the negative nickel plate 240 is connected to the negative tab 112. The positive nickel plate 230 is located between the integrated chip 210 and the positive tab 111 along the second direction Y, and the negative nickel plate 240 is located between the integrated chip 210 and the negative tab 112 along the second direction Y.
[0054] In this way, a conductive circuit can be formed between the battery cell 100 and the nickel sheet 220. Moreover, since the positive electrode tab 111 and the negative electrode tab 112 are located on the same side of the battery cell 100 along the first direction X, it is convenient to realize the electrical connection between the nickel sheet 220 and the battery cell 100. The extension length of the positive electrode nickel sheet 230 and the negative electrode nickel sheet 240 can be set to be shorter, saving materials and reducing costs and weight.
[0055] Furthermore, by connecting the positive nickel sheet 230 and the negative nickel sheet 240 together with the cell 100, the number of connection points between the cell 100 and the battery protection board 200 is increased, which helps to ensure the relative position between the cell 100 and the battery protection board 200. Moreover, when the battery pack is placed vertically, the cell 100 can more effectively support the battery protection board 200, thereby improving the reliability of the electrical connection between the battery protection board 200 and the cell 100.
[0056] like Fig. 1 As shown, in this embodiment, the battery protection board 200 further includes a flexible printed circuit board 250 (FPC). The flexible printed circuit board 250 and the battery protection board 200 are located on the same side of the housing 120 along the first direction X. The integrated chip 210 is connected to the flexible printed circuit board 250. The flexible printed circuit board 250 and the integrated chip 210 can be soldered together.
[0057] By setting the flexible circuit board 250, the area of the battery protection board 200 can be increased, the heat dissipation capacity of the battery protection board 200 is improved, heat accumulation on the integrated chip 210 is avoided, and the working performance of the battery protection board 200 is improved.
[0058] In addition, the flexible circuit board 250 can be reserved with a line connected with a filter circuit and the like module and a pad, so as to facilitate subsequent improvement of the battery protection board 200 and improve the performance of the battery protection board 200.
[0059] According to the embodiments of the utility model, on the other hand, a kind of electric equipment is also provided, including above-mentioned battery pack.
[0060] The electric equipment of the utility model utilizes above-mentioned battery pack, can not need to set printed circuit board, can reduce cost, simplify production step, improve space utilization.
[0061] Although the embodiments of the utility model are described in combination with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. A battery pack, characterized in that, include: A battery cell (100) having a tab (110) on one side along a first direction (X); A battery protection board (200) is disposed on the same side of the battery cell (100) as the tab (110). The battery protection board (200) includes an integrated chip (210) and a nickel sheet (220). The integrated chip (210) and the nickel sheet (220) are integrated into a single structure. The nickel sheet (220) is connected to the tab (110). The integrated chip (210) and the tab (110) are arranged at intervals along a second direction (Y). The first direction (X) intersects with the second direction (Y).
2. The battery pack according to claim 1, characterized in that, The battery cell (100) includes a housing (120), and the electrode tab (110) is connected to the housing (120) on one side along the first direction (X); The nickel sheet (220) includes: A first extension segment (221) is connected to the tab (110) and extends along the first direction (X). Along the first direction (X), one end of the first extension segment (221) away from the outer shell (120) extends beyond the end of the tab (110) away from the outer shell (120). The second extension segment (222) is connected to one end of the first extension segment (221) away from the housing (120) along the first direction (X), the second extension segment (222) extends along the second direction (Y), and the integrated chip (210) is connected to the second extension segment (222).
3. The battery pack according to claim 2, characterized in that, The first extension segment (221) is connected to one side of the electrode (110) along the third direction (Z), and the first direction (X), the second direction (Y) and the third direction (Z) are arranged to intersect each other; The second extension (222) is connected to the side of the first extension (221) facing away from the tab (110) along the third direction (Z).
4. The battery pack according to claim 3, characterized in that, The nickel sheet (220) also includes: The third extension segment (223) is connected to the end of the first extension segment (221) away from the outer shell (120) along the first direction (X), and extends away from the tab (110) along the third direction (Z). The end of the third extension segment (223) away from the first extension segment (221) along the third direction (Z) is connected to the second extension segment (222).
5. The battery pack according to claim 2, characterized in that, The second extension (222) is connected to the integrated chip (210) on the side facing away from the housing (120) along the first direction (X).
6. The battery pack according to claim 2, characterized in that, The first extension (221) abuts against the outer shell (120).
7. The battery pack according to any one of claims 1-6, characterized in that, The battery cell (100) includes two electrodes (110), one of which is a positive electrode (111) and the other is a negative electrode (112). The positive electrode (111) and the negative electrode (112) are located on opposite sides of the integrated chip (210) along the second direction (Y). The battery protection board (200) includes a plurality of nickel plates (220), one of which is a positive nickel plate (230) and the other is a negative nickel plate (240). The positive nickel plate (230) is connected to the positive electrode tab (111), and the negative nickel plate (240) is connected to the negative electrode tab (112).
8. The battery pack according to any one of claims 1-6, characterized in that, The battery protection board (200) also includes: The flexible circuit board (250) is located on the same side of the battery cell (100) along the first direction (X) as the battery protection board (200), and the integrated chip (210) is connected to the flexible circuit board (250).
9. The battery pack according to any one of claims 1-6, characterized in that, The integrated chip (210) includes an integrated circuit module and a field-effect transistor module. The integrated circuit module and the field-effect transistor module are electrically connected, and both the integrated circuit module and the field-effect transistor module are electrically connected to the nickel sheet (220).
10. An electrical appliance, characterized in that, Includes the battery pack according to any one of claims 1-9.