Battery adapter plate

Abstract

The utility model discloses a battery adapter piece which comprises an adapter piece body, and the adapter piece body comprises two tab connecting parts, a middle part and a pole connecting part, wherein each tab connecting part comprises a first area and a second area which are adjacently arranged along the first direction, and the second area is obliquely arranged along the edge of the first area; the middle part is arranged between the two first areas along the second direction; the pole connecting part is arranged between the projections of the two second areas in the second direction, the pole connecting part is adjacent to the middle part, and the projections of the second areas are located on the plane where the first area is located. According to the battery adapter plate provided by the utility model, the second areas and the first areas of the two tab connecting parts form a certain inclined angle, so that when a battery is overheated to trigger a fusing mechanism of the battery adapter plate, the tabs on the second areas close to the pole connecting parts and the pole connecting parts are positioned on different planes; and the tabs cannot be in direct contact with the poles to form a passage. And the safety of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery adapter. Background Art

[0002] During the production process of lithium batteries such as square-shell batteries, the battery's overcurrent usually flows from the current collector to the tab, the tab to the adapter, the adapter to the pole, and the pole is then connected to the external circuit; however, when a short circuit occurs in the battery and a large current passes through, a large amount of heat will be generated at the adapter and the pole, causing the sealing ring to fail due to heat, which in turn causes battery leakage and even thermal runaway, thereby increasing battery safety risks.

[0003] However, the problem with traditional battery adapters is that the adapter area used for welding the tabs and the adapter area used for welding the poles are in the same plane. When the battery overheats and triggers the fuse protection mechanism of the battery adapter, even if the battery adapter has melted, the tabs may still directly contact the adapter area used for welding the poles located in the same plane, thereby forming a path with the poles again, resulting in poor effect of the battery adapter's fuse protection mechanism and failure to completely disconnect the current. Utility Model Content

[0004] In view of the above problems, the present invention provides a battery adapter to solve the above technical problems.

[0005] The utility model provides a battery adapter, comprising an adapter body, wherein the adapter body comprises two tab connecting portions and a middle pole connecting portion;

[0006] In which, each of the tab connection portions includes a first area and a second area adjacently arranged along a first direction, and the second area is arranged obliquely along the edge of the first area; the middle portion is arranged between the two first areas along the second direction; the pole connection portion is arranged between the projections of the two second areas along the second direction, and the pole connection portion is arranged adjacent to the middle portion, wherein the projection of the second area is located in the plane where the first area is located.

[0007] In some embodiments, the length of projections of the two second regions along the first direction is smaller than the length of the pole connecting portion along the first direction.

[0008] In some embodiments, projections of the two second regions are spaced apart from the pole connecting portion at a preset distance along the second direction.

[0009] In some embodiments, the pole connection portion includes:

[0010] The pole connection region and the fuse region are adjacently arranged along the first direction, and the fuse region is arranged between the pole connection region and the middle portion along the first direction.

[0011] In some embodiments, the melting region is a concave bending structure, and a concave portion of the melting region faces the second region.

[0012] In some embodiments, a length of the fusing region along the second direction is the same as a length of the pole connection region along the second direction.

[0013] In some embodiments, a length of a projection of the second region along the first direction is greater than a length of the fuse region along the first direction.

[0014] In some embodiments, the first area and the second area are rectangular in shape.

[0015] In some embodiments, a length of the first region along the second direction is the same as a length of the second region along the second direction.

[0016] In some embodiments, the first direction and the second direction are two directions perpendicular to each other.

[0017] The battery adapter provided by the present invention comprises a first region and a second region adjacently arranged along a first direction, wherein the second region is arranged obliquely along the edge of the first region; a middle region is arranged between the two first regions along a second direction; and a pole connection portion is arranged between the projections of the two second regions along the second direction, wherein the pole connection portion and the middle region are adjacently arranged, wherein the projection of the second region is located in the plane where the first region is located. The present invention forms a certain inclination angle between the second regions of the two pole connection portions and the first regions, so that when the battery overheating triggers the protection mechanism, because the pole tabs on the second regions near the pole connection portions are in different planes from the pole connection portions, the pole tabs will not directly contact the poles, thereby forming a path. This improves the safety of the battery.

[0018] These and other aspects of the present invention will be more clearly understood in the description of the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1A schematic diagram of a battery adapter provided in an embodiment of the present utility model is shown.

[0021] Figure 2 A schematic diagram of the application of the battery adapter provided by an embodiment of the present utility model is shown. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0023] In the embodiments of the present invention, it should be noted that, in this document, relational terms such as first and second, etc., are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0024] Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0025] The embodiment of the utility model provides a battery adapter. Figure 1 A schematic diagram of a battery adapter provided by an embodiment of the present utility model is shown. Figure 1 As shown, the battery adapter provided by the embodiment of the present invention includes an adapter body 10 , and the adapter body 10 includes two tab connecting parts 11 , a middle part 12 and a pole connecting part 13 .

[0026] like Figure 1 As shown, each pole lug connection portion 11 includes a first area 111 and a second area 112 adjacently arranged along a first direction, and the second area 112 is arranged obliquely along the edge of the first area 111; optionally, the embodiment of the utility model does not limit the inclination angle of the second area 112 relative to the first area 111, as long as the second area 112 and the pole connection portion 13 are respectively arranged in different planes.

[0027] The middle portion 12 is disposed along the second direction between the two first regions 111. Optionally, the middle portion 12 is used to enable the battery adapter body 10 to form an integrated structure, thereby preventing the two tab connection portions 11 and the pole connection portion 13 from being separated.

[0028] The pole connecting portion 13 is disposed between the projections of the two second regions 112 along the second direction, and is adjacent to the middle portion 12 , wherein the projection of the second region 112 is located on the plane where the first region 111 is located.

[0029] like Figure 1 In the illustrated battery adapter, the second regions 112 of the two tab connections 11 are smaller than the post connection 13. However, it should be understood that the sizes of the tab and post connections are determined by the sizes of the tabs and posts to be welded, respectively. Typically, the tabs welded to the battery adapter are smaller than the posts. In other words, in the embodiments of the present invention, there are no fixed restrictions on the sizes of the post and tab connections; their actual sizes should be determined based on the actual conditions of the corresponding tabs and posts.

[0030] In some embodiments, Figure 2 The application diagram of the battery adapter provided by the embodiment of the utility model is shown as follows: Figure 2 As shown, the battery adapter provided by the embodiment of the present invention is often used in square batteries. When the battery adapter provided by the embodiment of the present invention is used, the two pole ear connecting parts 11 are used to be welded with the pole ear 21, and the pole connecting part 13 is used to be welded with the pole 22. The middle part 12 does not need to be welded with the pole ear and the pole.

[0031] It is understandable that the purpose of the middle portion 12 is to connect the pole connection portion 13 and the two tab connection portions 11 respectively, so that the battery adapter can form an integrated structure. Therefore, the shape of the middle portion is not limited in the embodiment of the present invention. The shape of the middle portion should be designed according to the area of ​​the battery for placing the battery adapter. For example, Figure 1 and Figure 2 The middle portion 12 shown is curved only because the area inside the battery for placing the battery adapter is insufficient. In fact, when the area inside the battery for placing the battery adapter is sufficient, the middle portion 12 can be set to any shape.

[0032] The battery adapter provided by the present invention forms a certain inclination angle between the second area of ​​the two tab connections and the first area. When the battery overheats and triggers the fuse protection mechanism of the battery adapter, the tabs on the second area near the post connection are located on different planes from the post connection. Therefore, the tabs cannot directly contact the post, thereby forming a path. This improves the safety of the battery.

[0033] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the length of the projection of the second area 112 of the two tab connecting parts 11 along the first direction is smaller than the length of the pole connecting part 13 along the first direction.

[0034] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the projections of the second areas 112 of the two tab connecting portions 11 are provided with a preset spacing distance from the pole connecting portion 13 along the second direction to further avoid the possibility of direct contact between the tab connecting portion 11 and the pole connecting portion 13.

[0035] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the projections of the second areas 112 of the two tab connecting portions 11 are spaced apart from the pole connecting area 131 along the second direction by a preset distance of 2-4 mm.

[0036] It is understandable that the embodiment of the present invention does not impose any specific limitation on the preset spacing distance between the projections of the second areas 112 of the two tab connecting portions 11 and the pole connecting area 131 along the second direction, as long as there is a certain distance between the two.

[0037] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the pole connecting portion 13 includes:

[0038] The pole connection area 131 and the fuse area 132 are adjacently arranged along the first direction, and the fuse area 132 is arranged between the pole connection area 131 and the middle part 12 along the first direction, so that when the battery overheats, the fuse protection mechanism can be triggered to melt the battery adapter and thereby disconnect the battery.

[0039] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the fuse region 132 is a concave bending structure, and the concave portion of the fuse region 132 faces the second region 112 .

[0040] The battery adapter provided by the embodiment of the present invention not only forms a certain inclination angle between the second area and the first area of ​​the two tab connection parts to prevent the tabs from directly contacting the pole connection parts, but also configures the fuse area of ​​the battery adapter to be a concave bend structure. When the fuse area melts, only the downwardly protruding portion of the concave bend structure will melt. At this time, the edge of the pole connection area adjacent to the fuse area will be a certain distance away from the pole, avoiding the situation where the fuse area and the pole connection area may overlap again and thus fail to effectively cut off the power, further improving the safety of battery conversion. In contrast, in traditional battery adapters, the fuse area and the pole connection area are arranged in the same plane and the fuse area is also a planar structure. When the fuse area melts, the fuse part may still overlap with the edge of the pole connection area, thereby completing the circuit.

[0041] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the length of the fusing area 132 along the second direction is the same as the length of the pole connection area 131 along the second direction.

[0042] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the length of the projection of the second area 112 along the first direction is greater than the length of the fuse area 132 along the first direction.

[0043] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the first area 111 and the second area 112 of the two tab connecting parts 11 are rectangular in shape, so as to be applied to square-shell batteries with square tabs.

[0044] It can be understood that the tab connection portion is used for welding the tab, and therefore the shape of the tab connection portion is determined by the shape of the tab.

[0045] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the length of the first area 111 of the two tab connecting parts 11 along the second direction is the same as the length of the second area 112 of the two tab connecting parts 11 along the second direction.

[0046] In some embodiments, as Figure 1 As shown, in the battery adapter provided by the embodiment of the present invention, the first direction and the second direction are two directions perpendicular to each other.

[0047] The battery adapter provided by the present invention forms a certain inclination angle between the second area of ​​the two tab connections and the first area. When the battery overheats and triggers the fuse protection mechanism of the battery adapter, the tabs on the second area near the post connection are located on different planes from the post connection. Therefore, the tabs cannot directly contact the post, thereby forming a path. This improves the safety of the battery.

[0048] Furthermore, the battery adapter provided by the embodiment of the present invention also sets the fuse area of ​​the battery adapter as a concave bending structure, so that when the fuse area melts, only the downward protruding part of the concave bending structure will be melted. At this time, the edge of the pole connection area adjacent to the fuse area will have a certain distance from the pole, thereby avoiding the situation where the fuse area and the pole connection area may overlap again and thus fail to effectively cut off the power, thereby further improving the safety of the battery conversion.

[0049] The above content is a further detailed description of the present invention in conjunction with specific implementation methods, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered as the scope of protection of the present invention.

Claims

1. A battery adapter, characterized in that: The adapter plate body includes two tab connection parts, a middle part and a pole connection part; In which, each of the tab connection portions includes a first area and a second area adjacently arranged along a first direction, and the second area is arranged obliquely along the edge of the first area; the middle portion is arranged between the two first areas along the second direction; the pole connection portion is arranged between the projections of the two second areas along the second direction, and the pole connection portion is arranged adjacent to the middle portion, wherein the projection of the second area is located in the plane where the first area is located.

2. The battery adapter according to claim 1, wherein: The length of the projections of the two second regions along the first direction is smaller than the length of the pole connecting portion along the first direction.

3. The battery adapter according to claim 1, wherein: The projections of the two second areas are spaced apart from the pole connecting portion at a preset distance along the second direction.

4. The battery adapter according to claim 1, wherein: The pole connecting portion includes: The pole connection region and the fuse region are adjacently arranged along the first direction, and the fuse region is arranged between the pole connection region and the middle portion along the first direction.

5. The battery adapter according to claim 4, wherein: The fusing region is a concave bending structure, and a concave portion of the fusing region faces the second region.

6. The battery adapter according to claim 4, wherein: The length of the fusing region along the second direction is the same as the length of the pole connecting region along the second direction.

7. The battery adapter according to claim 6, wherein: A length of a projection of the second region along the first direction is greater than a length of the fuse region along the first direction.

8. The battery adapter according to claim 1, wherein: The first area and the second area are rectangular in shape.

9. The battery adapter according to claim 8, wherein: A length of the first region along the second direction is the same as a length of the second region along the second direction.

10. The battery adapter according to claim 1, wherein: The first direction and the second direction are two directions perpendicular to each other.

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