Battery protection board and battery

Abstract

The utility model belongs to the technical field of battery external connection protection plates, and particularly relates to a battery protection plate, a first part is connected with a battery cell tab, the first part is welded with the battery cell tab, so that the first part is connected with the battery cell tab more firmly, and a second part is used for being connected with external electric equipment. The second part is connected with the first part through the flexible conductive part, the flexible conductive part is made of a flexible material, and the flexible material has the characteristics of being capable of being bent and folded, so that the second part can be arranged in any direction of the battery through the flexible conductive part, and the output direction of the battery is changed; the thickness of the flexible conductive piece can be greatly reduced, the size and the capacity of the battery cell can be improved, and meanwhile, the flexible conductive piece can be compatible with battery cells with different tab directions. Meanwhile, the utility model further discloses the battery, and the battery protection plate is arranged in the battery.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery external connection protection plates, in particular to a battery protection plate. Background Art

[0002] Batteries stand out among chemical energy storage devices because of their high energy density, no memory effect, long cycle life, and environmental friendliness, and have attracted extensive attention from industries such as electric vehicles and 3C. Batteries are usually used in series and parallel, and the consistency of the batteries has an important impact on the performance of the series-parallel battery pack.

[0003] In existing external batteries, since the direction of the tabs of the battery cells is inconsistent with the output direction of the battery, it is necessary to set an external circuit at the tabs of the battery cells to change the output direction of the battery. In the prior art, the external circuits are generally integrated with the protection board. The size of the existing protection board is usually designed according to the size of the battery cell, so that some protection boards can only be adapted to fixed battery cells. In addition, the existing protection boards generally do not have the ability to bend, so that they cannot fit better with the battery cells, and are not compatible with battery cells with different tab directions. Utility Model Content

[0004] The purpose of the utility model is to provide a battery protection board in view of the deficiencies in the prior art, so as to solve the technical problems that the prior protection board cannot adapt to a variety of battery cells and the battery cells with different directions of the tabs are not compatible.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A battery protection plate comprises a first part and a second part, wherein the first part and the second part are connected via a flexible conductive member, and the first part and the second part are both connected to the flexible conductive member line.

[0007] Furthermore, the flexible conductive element is a single-layer FPC circuit board or a multi-layer FPC circuit board.

[0008] Furthermore, the first part has a first surface and a second surface that are arranged opposite to each other, and a first output portion is arranged on the first surface, and two first output portions are arranged.

[0009] Furthermore, the first output part is made of nickel material.

[0010] Further, a portion of the first output portion is embedded in the first part, and another portion of the first output portion is exposed to the outside.

[0011] Furthermore, a control element is also provided on the first part, and the control element is electrically connected to the first output part.

[0012] Further, the control element is disposed between the two first output parts, and the control element is disposed on the first surface.

[0013] Furthermore, the second part has a third surface and a fourth surface which are arranged opposite to each other, the fourth surface is provided with a second output part, and a plurality of second output parts are provided.

[0014] Furthermore, a plurality of the second output parts are electrically connected to the flexible conductive member, and a portion of the second output part is disposed in the second portion, and another portion is exposed to the outside.

[0015] The utility model also discloses a battery, comprising a battery core and the above-mentioned protection plate, wherein the first output portion is connected to a pole ear of the battery core, and the protection plate is arranged along the outer contour of the battery core.

[0016] The beneficial effect of the utility model is that the utility model provides a battery protection plate, the first part of which is welded to the pole ear of the battery cell, so that the first part is more firmly connected to the pole ear of the battery cell, and the second part is used to connect to an external electrical device, and the second part is connected to the first part through a flexible conductive part, and the flexible conductive part is a flexible material, and the flexible material has the characteristics of being able to bend and fold, so that the second part can be set in any direction of the battery through the flexible conductive part, thereby changing the output direction of the battery, and at the same time, because the flexible conductive part is a flexible material, the size and capacity of the battery cell can be increased, and the battery cells with different pole ear directions can be compatible. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following will refer to the attached Figure 1 to Figure 3 To describe the features, advantages and technical effects of exemplary embodiments of the present utility model.

[0018] Figure 1 It is a schematic diagram of the top view structure of the protection plate in the utility model;

[0019] Figure 2 This is a schematic diagram of the bottom structure of the protection plate in the utility model;

[0020] Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0021] In the figure: 1. first part; 2. second part; 3. flexible conductive member; 4. battery;

[0022] 11. first surface; 12. second surface; 13. first output portion; 14. control element;

[0023] 21. third surface; 22. fourth surface; 23. second output portion;

[0024] 31. Bending area;

[0025] 41. Battery cell; 42. Positive electrode ear; 43. Negative electrode ear. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by technicians in the technical field to which the present invention belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" in the specification and claims of the present invention and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the description of the embodiments of the present utility model, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In the description of the embodiments of the present invention, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and multiple situations exist alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0030] In the description of the embodiments of the present invention, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0031] In the description of the embodiments of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0032] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0033] The following is combined with Figure 1 to Figure 3 The utility model is further described in detail, but it is not intended to limit the utility model.

[0034] Embodiment 1

[0035] A battery protection plate comprises a first part 1 and a second part 2, wherein the first part 1 and the second part 2 are connected via a flexible conductive member 3, and both the first part 1 and the second part 2 are wire-connected to the flexible conductive member 3.

[0036] Specifically, the first part 1 is welded to the tab of the battery cell 41, so that the connection between the first part 1 and the tab of the battery cell 41 is more firmly, the second part 2 is used to connect to an external electrical device, and the second part 2 is connected to the first part 1 through a flexible conductive member 3, the flexible conductive member 3 is a flexible material, and the flexible material has the characteristics of being able to bend and fold, so that the second part 2 can be set in any direction of the battery 4 through the flexible conductive member 3, thereby changing the output direction of the battery 4, and at the same time, because the flexible conductive member 3 is a flexible material, the size and capacity of the battery cell can be increased, and at the same time, it can be compatible with battery cells 41 with different tab directions.

[0037] In some embodiments, the flexible conductive member 3 is an FPC circuit board.

[0038] Specifically, setting the flexible conductive member 3 as an FPC circuit board can ensure that it has the function of transmitting current. At the same time, since the FPC circuit board is flexible, it can be folded and curled at will, so that the flexible conductive member 3 can better fit the contour of the battery 4, increase the size and capacity of the battery cell 41, and at the same time be compatible with battery cells 41 with different pole ear directions.

[0039] In some embodiments, the first portion 1 has a first surface 11 and a second surface 12 that are opposite to each other. The first surface 11 is provided with a first output portion 13 , and two first output portions 13 are provided.

[0040] Specifically, the first output part 13 is arranged facing the tabs of the battery cell 41 , and the first output part 13 is welded to the tabs of the battery cell 41 , and the current of the battery cell 41 is derived through the first output part 13 , and the two first output parts 13 correspond to the positive tab 42 and the negative tab 43 of the battery cell 41 , respectively.

[0041] In some embodiments, the first output portion 13 is made of nickel.

[0042] Specifically, in the structure of the battery cell 4, the positive electrode ear 42 of the battery cell 41 is generally designed with aluminum material, and the negative electrode ear 43 is designed with nickel material. In this embodiment, the first output part 13 can be set to a nickel material structure. Since nickel material has good conductivity, setting the first output part 13 to the above material can better conduct electricity to the battery cell 41.

[0043] In some embodiments, a portion of the first output portion 13 is embedded in the first portion 1 , and another portion of the first output portion 13 is exposed to the outside.

[0044] Specifically, the first output part 13 is fixedly arranged in the first part 1. This arrangement can fix the first output part 13 to prevent disconnection or displacement of the first output part 13, while also ensuring the connection stability between the battery cell 41 tab and the first output part 13.

[0045] In some embodiments, a control element 14 is further disposed on the first portion 1 , and the control element 14 is electrically connected to the first output portion 13 .

[0046] Specifically, the control element 14 is used to control the current output by the battery cell 4 and to stabilize the current when the current is flowing. The control element 14 is arranged in the first part 1, so that the protection board has more functions. When the external electrical appliance is connected to the battery, other control elements 14 are no longer needed to stabilize the battery current or control the battery current, which greatly improves the convenience of using the battery.

[0047] In some embodiments, the control element 14 is disposed between the two first output portions 13 , and the control element 14 is disposed on the first surface 11 .

[0048] Specifically, the tabs of a general battery cell 41 are arranged at both ends of one side of the battery 4. To prevent the tabs from being arranged too close to generate an arc between the tabs, the corresponding two first output parts 13 are also arranged corresponding to the positions of the tabs of the battery 4. Therefore, there is space to arrange the control element 14 only between the two first output parts 13. Arranging the control element 14 between the two first output parts 13 is conducive to the arrangement of the first output part 13 and will not interfere with the first output part 13. At the same time, arranging the control element 14 on the same side as the first output part 13 can greatly reduce the thickness of the first part 1. After the first output part 13 is connected to the tabs of the battery cell 41, there is a cavity between the tabs of the battery cell 41, and the control element 14 corresponds to the cavity and is arranged in the cavity, which greatly utilizes the space.

[0049] In some embodiments, the second portion 2 has a third surface 21 and a fourth surface 22 that are oppositely disposed, and the fourth surface 22 is provided with a second output portion 23 , and a plurality of second output portions 23 are provided.

[0050] Furthermore, the plurality of second output portions 23 are all electrically connected to the flexible conductive member 3 , and a portion of the second output portion 23 is disposed in the second portion 2 , and another portion is exposed to the outside.

[0051] Specifically, the second output part 23 is electrically connected to the flexible conductive part 3, and the second output part 23 is electrically connected to the first output part 13 through the flexible conductive part 3. The first output part 13 draws out the current of the battery cell 41 and transmits it to the external electrical appliance through the second output part 23. Placing a part of the second output part 23 in the second part 2 is conducive to fixing the second output part 23 and improving the installation stability of the second output part 23.

[0052] Embodiment 2

[0053] The utility model further discloses a battery, comprising a battery cell 41 and the above-mentioned protection plate, wherein the first output portion 13 is connected to the pole ear of the battery cell 41 , and the protection plate is arranged along the outer contour of the battery cell 41 .

[0054] Specifically, the battery cell 41 includes a positive ear 42 and a negative ear 43, and the two first output parts 13 are laser welded to the positive ear 42 and the negative ear 43 respectively. The connection stability between the positive ear 42 and the negative ear 43 and the first output part 13 is ensured by laser welding. At the same time, in the utility model, the flexible conductive member 3 is arranged around the outer contour of the battery cell 41, so the flexible conductive member 3 also has a bending area 31, which is adapted to the outer contour of the battery cell 41 through the bending area 31. The setting position of the bending area 31 can be set according to the actual size of the battery cell 41. By setting the bending area 31, the protective plate is more closely fitted to the outer contour of the battery cell 41, so that the overall size of the battery is smaller.

[0055] in Figure 3 The arrow in the figure indicates the direction in which the protection board is connected to the battery 4.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0057] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A battery protection board, characterized in that: The invention comprises a first part and a second part, wherein the first part and the second part are connected via a flexible conductive member, and both the first part and the second part are electrically connected to the flexible conductive member.

2. The battery protection board according to claim 1, characterized in that: The flexible conductive element is a single-layer FPC circuit board or a multi-layer FPC circuit board.

3. The battery protection board according to claim 2, characterized in that: The first part has a first surface and a second surface which are arranged opposite to each other. A first output portion is arranged on the first surface, and two first output portions are arranged.

4. The battery protection board according to claim 3, characterized in that: The first output part is made of nickel material.

5. The battery protection board according to claim 4, characterized in that: A portion of the first output portion is embedded in the first part, and another portion of the first output portion is exposed to the outside.

6. The battery protection board according to claim 5, characterized in that: The first part is also provided with a control element, and the control element is electrically connected to the first output part.

7. The battery protection board according to claim 6, characterized in that: The control element is disposed between the two first output parts, and the control element is disposed on the first surface.

8. The battery protection board according to claim 7, characterized in that: The second part has a third surface and a fourth surface which are arranged opposite to each other. The fourth surface is provided with a second output part, and a plurality of second output parts are provided.

9. The battery protection board according to claim 8, characterized in that: The plurality of second output parts are all electrically connected to the flexible conductive member, and a portion of the second output part is disposed in the second portion, and another portion is exposed to the outside.

10. A battery, characterized in that: It comprises a battery cell and the protection plate according to any one of claims 1 to 9, wherein the first output portion is connected to a pole ear of the battery cell, and the protection plate is arranged along the outer contour of the battery cell.

Images