Tab switching structure

Abstract

The utility model relates to and discloses a tab switching structure. Relates to the technical field of new energy batteries. The battery pack specifically comprises a tab arranged on a battery cell, and an adapter plate for fixing the tab on a top cover, a notch part is formed in the adapter piece, the tab comprises a penetrating part penetrating through the notch part from the bottom of the adapter piece and a bending part extending towards one side at the top of the penetrating part, the bending part is fixedly connected with the upper surface of the adapter piece, and the adapter piece is fixedly connected with the top cover. According to the utility model, the penetrating part of the tab penetrates through the notch part from the bottom of the adapter sheet, and the bending part of the tab extends on the upper surface of the adapter sheet, so that when the bending part is fixed on the upper surface of the adapter sheet, the bending part is separated from the battery cell by the adapter sheet, and the bending part is fixedly connected with the adapter sheet in the process of fixedly connecting the bending part with the adapter sheet; and in the subsequent use process of the lithium ion battery, the bent part is prevented from being inversely inserted into the battery cell to cause short circuit of the battery cell, so that the safety performance of the lithium ion battery is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy battery technical field especially relates to a pole lug adapter structure. BACKGROUND

[0002] Current square shell lithium ion battery is applied in new energy automobile increasingly widely, demand quantity expands rapidly, and battery safety guarantee is the cornerstone of promoting lithium battery new energy application, the current battery assembly process usually is with the pole lug of electricity core, through adapter piece and battery top cover's pole post are connected, thereby realizing the conduction of pole lug and pole post, again electricity core is installed into battery shell, finally battery top cover and battery shell fixed connection, make battery top cover close to battery shell, thereby through the pole post of battery top cover exposed, the pole lug of electricity core in the battery shell is led out, realizes the charge and discharge function of lithium ion battery.

[0003] In the prior art, when the adapter piece is used to connect the pole lug of the electricity core and the battery top cover, the pole lug of the electricity core is usually laid flat on the adapter piece, and the pole lug is fixed on the adapter piece by welding (such as Figure 9 ), then the electricity core is turned to a vertical state, and the pole lug is bent between the bottom of the adapter piece and the electricity core (such as Figure 10 ), then the top of the adapter piece is fixedly connected with the pole post on the battery top cover, so as to realize the conduction of the pole lug of the electricity core and the pole post.

[0004] In order to ensure that the electricity core can be turned to a vertical state and facilitate the entry of the electricity core into the shell, a certain amount of the pole lug is usually reserved. In the process of turning the electricity core and bending the pole lug, the state of the bent pole lug is uncontrollable, and the part of the pole lug bent between the bottom of the adapter piece and the electricity core may be inserted into the electricity core in reverse, causing short circuit of the electricity core, thereby causing safety accidents and reducing the safety performance of the battery. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiency of the prior art, and provides a pole lug adapter structure which can prevent the pole lug from being inserted into the electricity core in reverse and causing short circuit of the electricity core, thereby ensuring the safety performance of the lithium ion battery.

[0006] The utility model provides a pole lug adapter structure, which comprises a pole lug arranged on an electricity core, and an adapter piece used for fixing the pole lug on a top cover; the adapter piece is provided with a notch portion, the pole lug comprises a penetrating portion penetrating the notch portion from the bottom of the adapter piece, and a bent portion extending to one side at the top of the penetrating portion, the bent portion is fixedly connected with the upper surface of the adapter piece, and the adapter piece is fixedly connected with the top cover.

[0007] Further, the adapter sheet comprises two connection parts arranged at intervals, the gap part is arranged between the two connection parts, the two tabs are respectively arranged on the two battery cells, the penetrating parts of the two tabs penetrate the gap part at the same time, and the bending parts of the two tabs are fixedly connected with the upper surfaces of the two connection parts respectively.

[0008] Further, the tab adapter structure further comprises a flexible pad arranged at the bottom of the adapter sheet, and the flexible pad is used to protect the battery cell when the bending part is fixedly connected with the upper surface of the adapter sheet.

[0009] Further, the bending part is provided with a welding area, and the welding area is used for welding the bending part and the upper surface of the adapter sheet.

[0010] Further, the welding area is a plurality of parallel and interval arranged welding areas on the bending part, and the plurality of welding areas are used for welding the bending part and the upper surface of the adapter sheet at the same time.

[0011] Further, the top cover comprises a cover plate body, a lower plastic arranged at the bottom of the cover plate body, and a pole arranged on the cover plate body, the pole penetrates from the top of the cover plate body to the bottom of the lower plastic, and the adapter sheet is fixedly connected with the pole.

[0012] Further, the adapter sheet is provided with a clamping piece, the bottom of the pole is provided with a clamping groove, the clamping piece and the clamping groove are inserted and matched, and the adapter sheet and the pole are fixedly connected.

[0013] Further, the clamping piece comprises two clamping columns arranged at intervals on the upper surface of the adapter sheet, the ends of the two clamping columns away from the adapter sheet extend towards each other, the clamping groove is arranged at the bottom of the pole, the two clamping grooves are arranged at the opposite sides of the bottom of the pole respectively, and the ends of the two clamping columns away from the adapter sheet are inserted and matched with the two clamping grooves respectively.

[0014] Further, the end of the clamping piece away from the adapter sheet is provided with a buckle, the inner side of the clamping groove is provided with a locking groove, and the buckle is inserted and matched with the locking groove when the clamping piece is inserted and matched with the clamping groove.

[0015] Further, the buckle is made of elastic material.

[0016] The tab adapter structure has the following beneficial effects:

[0017] (1) The tab penetrating portion of the adapter structure penetrates the bottom of the adapter sheet from the gap portion, and the bent portion of the tab extends on the upper surface of the adapter sheet. Therefore, when the bent portion is fixed on the upper surface of the adapter sheet, the adapter sheet separates the bent portion from the battery cell, thereby preventing the bent portion from being inserted into the battery cell during the process of fixing the bent portion and the adapter sheet, and preventing the battery cell from short-circuiting during the subsequent use of the lithium ion battery, thereby ensuring the safety performance of the lithium ion battery;

[0018] (2) The bottom of the adapter sheet of the adapter structure is provided with a flexible pad. When the adapter sheet is located above the battery cell, the flexible pad separates the adapter sheet from the battery cell. Therefore, when the bent portion and the upper surface of the adapter sheet are welded, the flexible pad is used for heat insulation to prevent the heat generated by welding from burning the battery cell below, thereby protecting the battery cell and further ensuring the safety performance of the lithium ion battery;

[0019] (3) The bent portion of the adapter structure is provided with a welding area. Since the bent portion extends on the upper surface of the adapter sheet, the projection of the welding area provided on the bent portion coincides with the upper surface of the adapter sheet. Therefore, the welding area guides the position of the welding equipment for welding operation, so that the welding equipment performs welding between the bent portion and the upper surface of the adapter sheet in the welding area, thereby making the fixed connection between the bent portion and the upper surface of the adapter sheet more easily realized, and improving the practicality of the adapter structure;

[0020] (4) The adapter sheet of the adapter structure is provided with a clamping piece, and the bottom of the pole is provided with a clamping groove. The clamping piece and the clamping groove are inserted and matched to realize the fixed connection between the adapter sheet and the pole, so that the adapter sheet and the pole do not need to be welded, thereby avoiding the heat generated by welding from affecting the plastic sealing piece on the top cover, and further ensuring the safety performance of the lithium ion battery;

[0021] (5) The clamping piece of the adapter structure is provided with a buckle at the end away from the adapter sheet, and the inner side of the clamping groove is provided with a locking groove. When the clamping piece and the clamping groove are inserted and matched, the buckle at the end away from the adapter sheet is inserted and matched with the locking groove on the inner side of the clamping groove. Therefore, through the insertion and matching of the clamping piece and the clamping groove, and the insertion and matching of the buckle and the locking groove, the adapter sheet and the pole are simultaneously limited, thereby making the fixed connection between the adapter sheet and the pole more stable, and further enhancing the stability of the adapter structure;

[0022] (6) The buckle of the adapter structure is made of elastic material, so that the buckle can be elastically deformed under external force, thereby enabling the buckle to be smoothly inserted into the locking groove through the communication port of the locking groove and the clamping groove, and further enabling the locking groove to limit the buckle, thereby realizing the fixed connection between the adapter sheet and the pole. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements.

[0024] Figure 1 This is a side view of a tab adapter structure according to an embodiment of the present utility model;

[0025] Figure 2 This is a side view of an embodiment of the present invention showing the electrode tab and adapter plate fixedly connected in an electrode tab adapter structure.

[0026] Figure 3 This is a top view of an embodiment of the present invention showing a fixed connection between the electrode tab and the adapter plate in an electrode tab adapter structure.

[0027] Figure 4 This is a top view of an adapter piece of an electrode adapter structure according to an embodiment of the present utility model;

[0028] Figure 5 This is a side view of an adapter piece of an electrode adapter structure according to an embodiment of the present utility model;

[0029] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0030] Figure 7 This is a side view of the top cover of a tab adapter structure according to an embodiment of the present utility model;

[0031] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0032] Figure 9 A top view showing the fixed connection between the battery cell tabs and the adapter plate in the prior art;

[0033] Figure 10 for Figure 9 The battery cell in the image is flipped into a vertical side view.

[0034] In the diagram: 1. Battery cell; 2. Electrode; 21. Through section; 22. Bending section; 221. Welding area; 3. Adapter piece; 31. Notch; 32. Connecting part; 33. Snap-fit ​​piece; 331. Snap-fit ​​post; 332. Buckle; 4. Top cover; 41. Cover plate body; 42. Lower plastic; 43. Electrode post; 431. Snap-fit ​​groove; 432. Locking groove; 5. Flexible pad. Detailed Implementation

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor based on the embodiments in the utility model belong to the scope of protection of the utility model.

[0036] Please refer to Figures 1-10 The utility model discloses an ear switching structure, including the ear 2 of being arranged on the electric core 1, and the switching piece 3 for fixing the ear 2 on the top cap 4, the switching piece 3 is equipped with the notch part 31, the ear 2 includes the through -going portion 21 of the bottom of switching piece 3 through the notch part 31, and the bending portion 22 of the top of through -going portion 21 extends to one side, and the bending portion 22 is fixedly connected with the upper surface of switching piece 3, and the switching piece 3 is fixedly connected with the top cap 4.

[0037] In the application, the ear switching structure includes the ear 2 and the switching piece 3, the ear 2 is arranged at the top of the electric core 1, the ear 2 and the top cap 4 are connected through the switching piece 3, the ear 2 is conducted with the pole 43 on the top cap 4, so that when the top cap 4 is fixedly connected with the battery shell, the battery shell is closed, and then the ear 2 of the electric core 1 closed in the battery shell is led out through the exposed pole 43 on the top cap 4, and the charging and discharging function of the lithium ion battery is realized.

[0038] In the patent, the middle part of the switching piece 3 is provided with the notch part 31, the ear 2 includes the through -going portion 21 and the bending portion 22, the through -going portion 21 is through the notch part 31 from the bottom of switching piece 3, and the bending portion 22 extends to one side at the top of through -going portion 21, so that the bending portion 22 extends to the upper surface of switching piece 3, and then the bending portion 22 is fixedly connected with the upper surface of switching piece 3, so that the fixed connection of the ear 2 and the switching piece 3 is realized.

[0039] Because the through -going portion 21 of the ear 2 is through the notch part 31 from the bottom of switching piece 3, and the bending portion 22 of the ear 2 extends on the upper surface of switching piece 3, when the bending portion 22 is fixed on the upper surface of switching piece 3, the switching piece 3 separates the bending portion 22 from the electric core 1, so that in the process of fixing the bending portion 22 and the switching piece 3, and the subsequent use process of the lithium ion battery, the bending portion 22 is prevented from being inserted into the electric core 1, causing the short circuit of the electric core 1, and then the safety performance of the lithium ion battery is ensured.

[0040] In actual implementation, one switching piece 3 is connected with the ears 2 of two parallel arranged electric cores 1 at the same time, so that when the switching piece 3 is fixedly connected with the top cap 4, the ears 2 of the two electric cores 1 are conducted with the poles 43 on the top cap 4 at the same time. Therefore, in the embodiments, the switching piece 3 includes two connection parts 32, and the two connection parts 32 are arranged at intervals, and the notch part 31 is located between the two connection parts 32.

[0041] The two parallelly arranged battery cells 1 are each provided with a tab 2, and the penetrating portions 21 of the tabs 2 of the two battery cells 1 are simultaneously penetrated through the notch portions 31 of the adapter sheet 3 from the bottom of the adapter sheet 3. The bending portions 22 of the tabs 2 of one of the battery cells 1 are bent towards one side and extend to the upper surfaces of one of the connecting portions 32, and the bending portions 22 of the tabs 2 of the other battery cell 1 are bent towards the other side and extend to the upper surfaces of the other connecting portions 32. Then, the bending portions 22 of the tabs 2 of the two battery cells 1 are fixedly connected with the two connecting portions 32 respectively, so as to realize the fixed connection of the tabs 2 of the two battery cells 1 with the adapter sheet 3, and then realize the fixed connection of the tabs 2 of the two battery cells 1 with the pole 43 on the top cover 4 through the adapter sheet 3.

[0042] In the prior art, when the tabs 2 of the two battery cells 1 are fixedly connected with the adapter sheet 3, the two battery cells 1 are arranged on the two sides of the adapter sheet 3 respectively, the tabs 2 of the two battery cells 1 are laid flat on the adapter sheet 3, the tabs 2 of the two battery cells 1 are fixedly connected with the adapter sheet 3, and finally the two battery cells 1 are turned over to the vertical state, so that the two battery cells 1 are arranged side by side at the bottom of the adapter sheet 3.

[0043] In the process of turning over the two battery cells 1, the tabs 2 are bent between the battery cells 1 and the adapter sheet 3. Since the bending state of the tabs 2 is uncontrollable, the part of the tabs 2 bent between the bottom of the adapter sheet 3 and the battery cells 1 may be inserted into the battery cells 1 reversely, causing the short circuit of the battery cells 1, thereby causing safety accidents and reducing the safety performance of the lithium ion battery.

[0044] In the present application, when the tabs 2 of the two battery cells 1 are fixedly connected with the adapter sheet 3, the bending portions 22 of the tabs 2 extend on the upper surface of the adapter sheet 3. Therefore, when the bending portions 22 are fixedly connected with the upper surface of the adapter sheet 3, the adapter sheet 3 separates the bending portions 22 from the battery cells 1, so as to prevent the bending portions 22 from being inserted into the battery cells 1 reversely in the process of fixing the bending portions 22 with the adapter sheet 3 and in the subsequent use process of the lithium ion battery, thereby ensuring the safety performance of the lithium ion battery.

[0045] In the present embodiment, the tab adapter structure further comprises a flexible pad 5 arranged at the bottom of the adapter sheet 3. In actual implementation, the bending portions 22 are usually fixedly connected with the upper surface of the adapter sheet 3 by welding. Since the adapter sheet 3 is located above the battery cells 1 in the present application, the heat generated by welding the bending portions 22 with the upper surface of the adapter sheet 3 may burn the battery cells 1 below, thereby affecting the safety performance of the lithium ion battery.

[0046] Therefore, in the present application, the bottom of the adapter piece 3 is provided with a flexible pad 5, when the adapter piece 3 is located above the battery cell 1, the flexible pad 5 separates the adapter piece 3 from the battery cell 1, so that when the bending part 22 is welded with the upper surface of the adapter piece 3, the flexible pad 5 can prevent the heat generated by welding from burning the battery cell 1 below, thereby protecting the battery cell 1 and further ensuring the safety performance of the lithium ion battery. Specifically, in the present application, the flexible pad 5 can be a heat-insulating rubber pad.

[0047] In the present embodiment, the bending part 22 is provided with a welding area 221, since the bending part 22 extends on the upper surface of the adapter piece 3, the projection of the welding area 221 provided on the bending part 22 coincides with the upper surface of the adapter piece 3, thereby guiding the welding equipment to the position of the welding operation through the welding area 221, so that the welding equipment can weld the bending part 22 with the upper surface of the adapter piece 3 at the welding area 221, thereby making the fixed connection between the bending part 22 and the upper surface of the adapter piece 3 more easily realized, and improving the practicability of the adapter structure.

[0048] In the present embodiment, the welding area 221 is a plurality of parallel and spaced-apart welding areas on the bending part 22, when the bending part 22 extends on the upper surface of the adapter piece 3, the projections of the plurality of welding areas 221 respectively coincide with the upper surface of the adapter piece 3, thereby guiding the welding equipment to the position of the welding operation through the plurality of welding areas 221, so that the welding equipment can weld the bending part 22 with the upper surface of the adapter piece 3 at the plurality of welding areas 221 respectively, thereby making the fixed connection between the bending part 22 and the adapter piece 3 more stable, and enhancing the stability of the adapter structure.

[0049] In the present embodiment, the top cover 4 includes a cover plate body 41, a lower plastic 42 and a pole 43, the lower plastic 42 is arranged at the bottom of the cover plate body 41, and the pole 43 penetrates the cover plate body 41 and the lower plastic 42, that is, the pole 43 penetrates from the top of the cover plate body 41 to the bottom of the lower plastic 42, so that the top of the pole 43 extends above the cover plate body 41, and the bottom of the pole 43 extends below the cover plate body 41.

[0050] In the present application, since the bottom of the pole 43 extends below the cover plate body 41, the adapter piece 3 is fixedly connected with the tab 2 and the bottom of the pole 43, so that the adapter piece 3 connects the tab 2 and the pole 43 in conduction, thereby when the cover plate body 41 is fixedly connected with the battery shell and the battery shell is closed, the tab 2 of the battery cell 1 closed in the battery shell is led out through the end of the pole 43 extending above the cover plate body 41, and the charging and discharging function of the lithium ion battery is realized.

[0051] Specifically, in the embodiment, the adapter piece 3 is provided with a clamping piece 33, the bottom of the pole 43 is provided with a clamping groove 431, and the clamping piece 33 and the clamping groove 431 are inserted and matched to realize the fixed connection of the adapter piece 3 and the pole 43. In the prior art, the fixed connection of the adapter piece 3 and the pole 43 is generally realized by welding. Since the top cover 4 is generally provided with a plastic sealing piece, such as a lower plastic 42, to insulate and seal the pole 43 and the cover plate body 41, when the fixed connection of the adapter piece 3 and the pole 43 is realized by welding, the heat generated by welding is easy to damage the plastic sealing piece on the top cover 4, thereby affecting the safety performance of the lithium ion battery.

[0052] In the present application, the fixed connection of the adapter piece 3 and the pole 43 is realized by the insertion and matching of the clamping piece 33 and the clamping groove 431, so that the adapter piece 3 and the pole 43 do not need to be welded, the heat generated by welding is avoided to damage the plastic sealing piece on the top cover 4, and the safety performance of the lithium ion battery is ensured.

[0053] In the embodiment, the clamping piece 33 includes two clamping columns 331 arranged in a spaced-apart manner on the upper surface of the adapter piece 3, and the ends of the two clamping columns 331 away from the adapter piece 3 extend towards each other. The clamping groove 431 is provided at the bottom of the pole 43, and the two clamping grooves 431 are respectively arranged on the opposite sides of the bottom of the pole 43. The ends of the two clamping columns 331 away from the adapter piece 3 are respectively inserted and matched with the two clamping grooves 431.

[0054] In the present application, the clamping piece 33 includes two clamping columns 331 arranged in a spaced-apart manner on the upper surface of the adapter piece 3, and the ends of the two clamping columns 331 away from the adapter piece 3 extend towards each other. The clamping groove 431 is provided at the bottom of the pole 43, and the two clamping grooves 431 are respectively arranged on the opposite sides of the bottom of the pole 43. The ends of the two clamping columns 331 away from the adapter piece 3 are respectively inserted and matched with the two clamping grooves 431.

[0055] When the fixed connection of the adapter piece 3 and the pole 43 is realized, the ends of the two clamping columns 331 away from the adapter piece 3 are respectively inserted and matched with the two clamping grooves 431, so that the part of the pole 43 below the two clamping grooves 431 is located in the accommodation area, thereby realizing the fixed connection of the adapter piece 3 and the pole 43, and making the fixed connection of the adapter piece 3 and the pole 43 more stable, thereby enhancing the stability of the adapter structure.

[0056] In the foregoing embodiment, it is mentioned that the bent part 22 of the tab 2 extends on the upper surface of the adapter piece 3, and the fixed connection between the tab 2 and the adapter piece 3 is achieved by the fixed connection between the bent part 22 and the upper surface of the adapter piece 3. In the present application, the upper surface of the adapter piece 3 is provided with two oppositely spaced clamping columns 331 for fixedly connecting the adapter piece 3 and the pole 43, and it can be foreseen that the projection of the clamping column 331 on the adapter piece 3 does not coincide with the projection of the bent part 22 on the adapter piece 3, i.e., the positions of the clamping column 331 and the bent part 22 on the upper surface of the adapter piece 3 do not coincide, thereby preventing the fixed connection between the tab 2 and the adapter piece 3 and the fixed connection between the adapter piece 3 and the pole 43 from interfering with each other.

[0057] In addition, since the tab 2 has a certain thickness, the bent part 22 occupies the space above the adapter piece 3 when extending on the upper surface of the adapter piece 3, and therefore when fixedly connecting the bottom of the pole 43 on the cover plate body 41 and the adapter piece 3, the lower plastic 42 at the bottom of the cover plate body 41 needs to be higher than the bent part 22, thereby preventing the bent part 22 from interfering with the fixed connection between the adapter piece 3 and the pole 43.

[0058] Further, in the present embodiment, the clamping member 33 is provided with a buckle 332 at the end away from the adapter piece 3, and the inner side of the clamping groove 431 is provided with a locking groove 432. When fixedly connecting the adapter piece 3 and the pole 43, the clamping member 33 is inserted and matched with the clamping groove 431 until the buckle 332 at the end of the clamping member 33 away from the adapter piece 3 is inserted and matched with the locking groove 432 at the inner side of the clamping groove 431, thereby limiting the adapter piece 3 and the pole 43 through the insertion and matching of the clamping member 33 and the clamping groove 431 and the insertion and matching of the buckle 332 and the locking groove 432, and further making the fixed connection between the adapter piece 3 and the pole 43 more stable, thereby enhancing the stability of the adapter structure.

[0059] In the present embodiment, when the buckle 332 at the end of the clamping member 33 away from the adapter piece 3 is inserted and matched with the locking groove 432 at the inner side of the clamping groove 431, the locking groove 432 limits the buckle 332, thereby limiting the clamping member 33 in the clamping groove 431 and achieving the fixed connection between the adapter piece 3 and the pole 43. Specifically, in actual implementation, the cross-sectional area of the communication port between the locking groove 432 and the clamping groove 431 is designed to be smaller than the maximum cross-sectional area of the buckle 332, so that when the buckle 332 is inserted in the locking groove 432, the locking groove 432 can limit the buckle 332.

[0060] In order to enable the buckle 332 to be smoothly inserted into the lock slot 432, in the present application, the buckle 332 is made of a flexible material, such as plastic, so that the buckle 332 can be elastically deformed under the action of an external force, thereby enabling the buckle 332 to be smoothly inserted into the lock slot 432 through the communication opening of the lock slot 432 and the clamping groove 431, and then enabling the lock slot 432 to limit the buckle 332, so as to realize the fixed connection between the adapter piece 3 and the pole 43.

[0061] The above-described content can be implemented individually or in various combinations, and these variants are within the protection scope of the present application.

[0062] It should be noted that, in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment containing a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including one" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0063] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit it. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tab adapter structure, characterized by: The application relates to a tab switching structure of a battery cell, which comprises a tab (2) arranged on a battery cell (1) and a switching piece (3) used for fixing the tab (2) on a top cover (4); the switching piece (3) is provided with a notch part (31), the tab (2) comprises a penetrating part (21) penetrating through the notch part (31) from the bottom of the switching piece (3), and a bending part (22) extending to one side at the top of the penetrating part (21), the bending part (22) is fixedly connected with the upper surface of the switching piece (3), and the switching piece (3) is fixedly connected with the top cover (4).

2. A tab adaptor structure as defined in claim 1, characterized in that: The switching piece (3) comprises two spaced apart connecting parts (32), the notch part (31) is arranged between the two connecting parts (32), and the two tabs (2) are arranged on the two battery cells (1) respectively, the penetrating parts (21) of the two tabs (2) simultaneously penetrate through the notch part (31), and the bending parts (22) of the two tabs (2) are fixedly connected with the upper surfaces of the two connecting parts (32) respectively.

3. A tab adaptor structure as defined in claim 1, wherein: The tab switching structure further comprises a flexible pad (5) arranged at the bottom of the switching piece (3), and the flexible pad (5) is used for protecting the battery cell (1) when the bending part (22) is fixedly connected with the upper surface of the switching piece (3).

4. A tab adaptor structure as defined in claim 1, wherein: The bending part (22) is provided with a welding area (221) used for welding the bending part (22) with the upper surface of the switching piece (3).

5. A tab adaptor structure as claimed in claim 4, wherein: The welding area (221) is a plurality of parallel and spaced apart welding areas (221) on the bending part (22), and the plurality of welding areas (221) are simultaneously used for welding the bending part (22) with the upper surface of the switching piece (3).

6. A tab adaptor structure as defined in claim 1, characterized in that: The top cover (4) comprises a cover plate body (41), a lower plastic (42) arranged at the bottom of the cover plate body (41), and a pole (43) arranged on the cover plate body (41), the pole (43) penetrates through from the top of the cover plate body (41) to the bottom of the lower plastic (42), and the switching piece (3) is fixedly connected with the pole (43).

7. A tab adaptor structure as claimed in claim 6, characterized in that: The switching piece (3) is provided with a clamping piece (33), the bottom of the pole (43) is provided with a clamping groove (431), the clamping piece (33) and the clamping groove (431) are inserted and matched, and the switching piece (3) is fixedly connected with the pole (43).

8. A tab adaptor structure as claimed in claim 7, characterized in that: The clamping piece (33) comprises two clamping columns (331) arranged on the upper surface of the switching piece (3) in a relatively spaced apart mode, the ends, away from the switching piece (3), of the two clamping columns (331) extend towards each other, the clamping groove (431) is two clamping grooves (431) arranged at the bottom of the pole (43), the two clamping grooves (431) are arranged at the opposite two sides of the bottom of the pole (43) respectively, and the ends, away from the switching piece (3), of the two clamping columns (331) are respectively inserted and matched with the two clamping grooves (431).

9. A tab adaptor structure as defined in claim 7, characterized by: The clamping piece (33) is provided with a buckle (332) at one end away from the adapter piece (3), and the inner side of the clamping groove (431) is provided with a locking groove (432); when the clamping piece (33) is inserted into the clamping groove (431), the buckle (332) is inserted into the locking groove (432).

10. A tab adaptor structure as claimed in claim 9, wherein: The buckle (332) is made of elastic material.

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