Tab connecting structure, blade battery and electric equipment

Abstract

The utility model provides a tab connecting structure, blade battery and electric equipment, relates to battery technical field, the tab connecting structure includes two tabs of same polarity, first connecting row and second connecting row, said first connecting row and second connecting row are respectively welded with the corresponding tabs, and the surfaces of the sides, far away from the corresponding tabs, of the first connecting bar and the second connecting bar are flush and are used for being connected with a top cover of the battery. According to the tab connecting structure, the surfaces, facing the top cover, of the two connecting rows are flush, so that the connecting area of the tab connecting structure and the top cover can be effectively increased, the connecting stability of the tab connecting structure and the top cover is improved, and the quality of the blade battery is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a tab connection structure, a blade battery and electrical equipment. Background Art

[0002] Blade battery is a new type of high-energy-density lithium-ion battery. Its working principle is to use the migration and embedding reaction of lithium ions between the positive and negative electrodes to achieve electrical energy conversion.

[0003] In related technologies, a blade battery casing generally has multiple, for example two, core packs arranged inside. The two core packs are arranged according to a certain rule, and two pole ears extend from the same level. The two pole ears can be welded to the bus base of the top cover respectively.

[0004] In order to achieve a better connection with the bus base of the top cover, the two tabs are usually bent separately to form a bent portion welded to the bus base, but the bent portions of the two tabs may not be in the same plane, resulting in a smaller connection area between the bent portion with a lower plane and the bus base, which affects the quality of the blade battery. Utility Model Content

[0005] The problem solved by the utility model is how to improve the connection stability between the tab at the end of the core pack body and the top cover in a blade battery.

[0006] To solve the above problems, in the first aspect, the present invention provides a tab connection structure, comprising two tabs with the same polarity, a first connection row and a second connection row, wherein the first connection row and the second connection row are respectively welded to the corresponding tabs, and the first connection row and the second connection row are flush with the surface of one side away from the corresponding tabs, and are used to connect to the top cover of the battery.

[0007] Optionally, the two electrode tabs are respectively a first electrode tab and a second electrode tab, the first connecting row includes a first connecting portion and a second connecting portion connected to each other, and the first connecting portion is welded to the first electrode tab;

[0008] The second connecting row includes a third connecting portion and a fourth connecting portion that are interconnected, the third connecting portion is welded to the second tab, the fourth connecting portion and the second connecting portion are in the same plane and are welded, and a side surface of the fourth connecting portion and the second connecting portion that is away from their respective corresponding tabs is used to connect to the top cover of the battery.

[0009] Optionally, the fourth connecting portion and the second connecting portion are arranged along the extension direction of the two tabs.

[0010] Optionally, the first connecting portion and the second connecting portion are in the same plane. The first connecting portion is a strip-shaped structure and is arranged along the extending direction of the first tab. The first connecting portion is disposed on the first tab, and the second connecting portion is located on the side of the first connecting portion facing the second tab.

[0011] Optionally, the third connecting portion and the fourth connecting portion are stacked. The third connecting portion is a strip-shaped structure and is arranged along the extending direction of the second tab. The second tab includes a second bending portion, and the third connecting portion and the fourth connecting portion are respectively on two opposite sides of the second bending portion;

[0012] The first tab includes a first bending portion, and the bending direction of the first bending portion is opposite to that of the second bending portion.

[0013] Optionally, a second bending hole structure is provided at the bending connection of the third connecting portion and the fourth connecting portion.

[0014] Optionally, the first connecting portion and the second connecting portion are stacked. The first connecting portion is a strip-shaped structure and is arranged along the extending direction of the first tab. The first tab includes a first bending portion, and the first connecting portion and the second connecting portion are respectively on two opposite sides of the first bending portion;

[0015] The third connecting portion and the fourth connecting portion are stacked. The third connecting portion is a strip-shaped structure and is arranged along the extending direction of the second tab. The second tab includes a second bending portion, and the third connecting portion and the fourth connecting portion are respectively on two opposite sides of the second bending portion.

[0016] Optionally, the bending directions of the first bending portion and the second bending portion are the same; or, the bending directions of the first bending portion and the second bending portion are opposite.

[0017] The beneficial effect of the tab connection structure of the present utility model is that the tab connection structure mainly includes two tabs, a first connection row and a second connection row. Among them, the blade battery may include two core pack bodies, and the same-polarity ends of the two core pack bodies, such as the positive extreme or the negative extreme, respectively extend a tab; the two tabs can be connected to the corresponding side of the top cover in the following manner. For example, the first connection row and the second connection row are respectively welded to the corresponding tabs, and the surfaces of the first connection row and the second connection row away from the corresponding tabs, that is, the surfaces facing the top cover, are flush. The first connection row and the second connection row can be welded to the busbar base of the top cover so that the same-polarity electrodes of the two core pack bodies are electrically connected to the busbar base of the top cover through the tab connection structure. At this time, the busbar base can be equivalent to an electrode post at one end of the blade battery.

[0018] Compared with the small connection area between the two tabs of the blade battery in the prior art, which affects the quality of the blade battery, in the present utility model, when the electrodes of the same polarity of the two core pack bodies are connected to the busbar base of the top cover through the tab connection structure during welding, since the surfaces of the first connection row and the second connection row on the side away from their respective corresponding tabs are flush, in other words, the surfaces of the two connection rows in the tab connection structure facing the top cover are flush, the connection area between the tab connection structure and the top cover can be effectively increased, so as to improve the connection stability between the tab connection structure and the top cover, and further ensure the quality of the blade battery.

[0019] In a second aspect, the present utility model provides a blade battery, which includes the tab connection structure as described above, and further includes a casing, at least one top cover, and two core pack bodies. The casing is a hollow shell structure with at least one open end. The two core pack bodies are installed inside the casing, and the top cover is correspondingly arranged at the opening of the casing. One ends of the two core pack bodies facing the same opening are connected to one top cover through one tab connection structure.

[0020] Therefore, since the blade battery includes the above tab connection structure, the blade battery at least has all the technical effects of the tab connection structure, which will not be elaborated here.

[0021] In a third aspect, the present utility model provides an electrical device, which includes the blade battery as described above.

[0022] Therefore, since the electrical device includes the above blade battery, the electrical device at least has all the technical effects of the blade battery, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the tab connection structure and two core pack bodies in an embodiment of the present utility model.

[0024] Figure 2 It is one of the exploded structural diagrams of the tab connection structure and two core pack bodies in an embodiment of the present utility model.

[0025] Figure 3 It is the second of the exploded structural diagrams of the tab connection structure and two core pack bodies in an embodiment of the present utility model.

[0026] Figure 4 It is one of the front view structural diagrams of the tab connection structure and two core pack bodies in an embodiment of the present utility model.

[0027] Figure 5 It is the second of the front view structural diagrams of the tab connection structure and two core pack bodies in an embodiment of the present utility model.

[0028] Figure 6 This is the second exploded structure diagram of the tab connection structure in the embodiment of the present utility model.

[0029] Figure 7 This is the third front view structure diagram of the tab connection structure and two core package bodies in the embodiment of the present utility model.

[0030] Figure 8 This is the third exploded structure diagram of the tab connection structure in the embodiment of the present utility model.

[0031] Figure 9 This is the structure diagram of the blade battery in the embodiment of the present utility model.

[0032] Figure 10 This is the exploded structure diagram of the blade battery in the embodiment of the present utility model.

[0033] Figure 11 It is Figure 10 the enlarged structure diagram at position A in

[0034] Explanation of reference numerals:

[0035] 100 - tab connection structure; 1 - first connection row; 11 - first connection part; 12 - second connection part; 13 - first bending hole structure; 2 - second connection row; 21 - third connection part; 22 - fourth connection part; 23 - second bending hole structure; 3 - tab; 31 - first tab; 311 - first bending part; 32 - second tab; 321 - second bending part; 4 - core package body; 5 - top cover; 51 - busbar base; 52 - top cover body; 53 - separator; 6 - housing. Detailed implementation manners

[0036] In order to make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following will describe the specific embodiments of the present utility model in detail with reference to the drawings. Although some embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be construed as limited to the embodiments described herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present utility model. It should be understood that the drawings and embodiments of the present utility model are only for exemplary purposes and are not used to limit the protection scope of the present utility model.

[0037] The Z-axis in the attached drawings represents the vertical direction, that is, the up-and-down position. The positive direction of the Z-axis represents the upper side, and the negative direction of the Z-axis represents the lower side. The X-axis in the attached drawings represents the horizontal direction and is specified as the left-and-right position. The positive direction of the X-axis represents the right side, and the negative direction of the X-axis represents the left side. The Y-axis in the attached drawings represents the front-and-back position. The positive direction of the Y-axis represents the front side, and the negative direction of the Y-axis represents the back side. It should be noted that the above-described meanings of the Z-axis, Y-axis, and X-axis are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated devices or elements must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0038] As used herein, the term "comprising" and its variations are open-ended, that is, "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules, or units, and do not limit the order or interdependence of the functions performed by these devices, modules, or units.

[0039] It should be noted that the modifications of "one" and "plural" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0040] In view of the problems existing in the above-mentioned related technologies, this embodiment provides a tab connection structure.

[0041] As Figure 1 shown, a tab connection structure provided by an embodiment of the present invention includes two tabs 3 with the same polarity, a first connection row 1, and a second connection row 2. The first connection row 1 and the second connection row 2 are respectively welded to the corresponding tabs 3. One side surfaces of the first connection row 1 and the second connection row 2 away from their respective corresponding tabs 3 are flush and are used to connect to the top cover 5 of the battery.

[0042] Specifically, the two tabs 3 have the same polarity. For example, the electrodes of the same polarity of two core package bodies 4 extend to the same end of the two core package bodies 4 to serve as the two tabs 3 with the same polarity. The first connection row 1 and the second connection row 2 can be metal connection sheet structures, which are convenient for welding to the tabs and the top cover respectively.

[0043] One side surface of the first connection row 1 away from the corresponding tab 3 is flush with one side surface of the second connection row 2 away from the corresponding tab 3, and the first connection row 1 and the second connection row 2 are respectively connected to the top cover 5 of the battery, for example, by welding. The blade battery includes a top cover 5, and the top cover 5 may include a busbar base 51 to enable the welding operation of the two core pack bodies 4 to the busbar base 51 of the top cover 5 through the corresponding tabs 3 via the corresponding connection rows.

[0044] In this embodiment, the tab connection structure 100 mainly includes two tabs 3, a first connection row 1, and a second connection row 2. Among them, the blade battery may include two core pack bodies 4, and one polar end of the two core pack bodies 4, for example, the positive extreme or the negative extreme, respectively extends a tab 3; the two tabs 3 can be connected to the corresponding side of the top cover 5 in the following manner. For example, the first connection row 1 and the second connection row 2 are respectively welded to the corresponding tabs 3, and one side surface of the first connection row 1 and the second connection row 2 away from the corresponding tabs 3, that is, the surface facing the top cover 5, is flush. The first connection row 1 and the second connection row 2 can be welded to the busbar base 51 of the top cover 5 so that the same polar electrodes of the two core pack bodies 4 are electrically connected to the busbar base 51 of the top cover 5 through the tab connection structure 100. At this time, the busbar base 51 can be equivalent to an electrode post at one end of the blade battery.

[0045] Compared with the relatively small connection area between the two tabs 3 of the blade battery in the prior art, which affects the quality of the blade battery, in the present utility model, when the same polar ends of the two core pack bodies 4 are welded to the busbar base 51 of the top cover 5 through the tab connection structure 100, since one side surface of the first connection row 1 and the second connection row 2 away from their respective corresponding tabs 3 is flush, in other words, the surfaces of the two connection rows in the tab connection structure 100 facing the top cover 5 are flush, it is possible to effectively increase the connection area between the tab connection structure 100 and the top cover 5, improve the connection stability between the tab connection structure 100 and the top cover 5, and further ensure the quality of the blade battery.

[0046] Optionally, as shown in Figure 2 and Figure 3 , the two tabs 3 are respectively a first tab 31 and a second tab 32. The first connection row 1 includes a first connection portion 11 and a second connection portion 12 connected to each other, and the first connection portion 11 is welded to the first tab 31;

[0047] The second connection row 2 includes a third connection portion 21 and a fourth connection portion 22 connected to each other. The third connection portion 21 is welded to the second tab 32. The fourth connection portion 22 is in the same plane as the second connection portion 12 and the two are welded. The side surfaces of the fourth connection portion 22 and the second connection portion 12 away from their respective corresponding tabs 3 are used to connect to the top cover 5 of the battery.

[0048] Specifically, the first connecting row 1 can be divided into two parts, namely a first connecting portion 11 and a second connecting portion 12. The first connecting portion 11 and the second connecting portion 12 can be of an integral structure, thereby improving the mechanical strength of the first connecting row 1. The second connecting row 2 can be divided into two parts, namely a third connecting portion 21 and a fourth connecting portion 22. The third connecting portion 21 and the fourth connecting portion 22 can be of an integral structure, thereby improving the mechanical strength of the second connecting row 2.

[0049] The second connecting portion 12 of the first connecting row 1 and the fourth connecting portion 22 of the second connecting row 2 are in the same plane, and the joint between the two is fixed by welding. The surface of the fourth connecting portion 22 away from the second tab 32 and the surface of the second connecting portion 12 away from the first tab 31 are respectively welded and fixed to the current collecting base 51 of the top cover 5.

[0050] In this alternative embodiment, since the fourth connecting portion 22 and the second connecting portion 12 are in the same plane and welded to each other to realize the connection and fixation of the first connecting row 1 and the second connecting row 2. Subsequently, the fourth connecting portion 22 of the second connecting row 2, the second connecting portion 12 of the first connecting row 1 and the current collecting base 51 of the top cover 5 are welded. Thus, on the basis of the fixation of the first connecting row 1 and the second connecting row 2, not only can the convenience of the welding operation of the fourth connecting portion 22 and the second connecting portion 12 with the top cover 5 be improved, but also the connection area of the tab connection structure 100 can be increased to improve the welding stability of the tab connection structure 100 with the top cover 5, and correspondingly improve the quality of the blade battery.

[0051] Optionally, in combination with Figure 2 and Figure 3 as shown, the fourth connecting portion 22 and the second connecting portion 12 are arranged along the extending directions of the two tabs 3.

[0052] Specifically, the two tabs 3 are arranged in parallel, and the extending direction of each tab 3 is parallel to Figure 2 the Y-axis direction in the coordinate system; the arrangement direction of the fourth connecting portion 22 and the second connecting portion 12 is parallel to the extending direction of the tab 3.

[0053] In this alternative embodiment, since the fourth connecting portion 22 and the second connecting portion 12 are arranged along the extending directions of the two tab ears 3, both the fourth connecting portion 22 and the second connecting portion 12 can cover the two tab ears simultaneously, which is beneficial to increasing the extension areas of the fourth connecting portion 22 and the second connecting portion 12, ensuring the flatness of the fourth connecting portion 22 and the second connecting portion 12, and the fourth connecting portion 22 and the second connecting portion 12 are adjacent to each other. When the first connecting row 1 and the second connecting row 2 are welded and fixed, the welding length at the junction of the fourth connecting portion 22 and the second connecting portion 12 can be increased, thereby effectively improving the connection stability between the first connecting row 1 and the second connecting row 2.

[0054] Optionally, as shown in combination with Figure 2 and Figure 3 , the first connecting portion 11 and the second connecting portion 12 are in the same plane. The first connecting portion 11 is in a strip structure and is arranged along the extending direction of the first tab ear 31. The first connecting portion 11 is disposed on the first tab ear 31, and the second connecting portion 12 is located on the side of the first connecting portion 11 facing the second tab ear 32.

[0055] Specifically, the first connecting portion 11 is in a strip shape, and the second connecting portion 12 can be square. At this time, the first connecting portion 11 and the second connecting portion 12 can form a first connecting row 1 similar to an L shape. The first connecting portion 11 and the second connecting portion 12 are in the same plane, that is, the first connecting row 1 has no bend and is in an overall planar structure, so that when the first connecting row 1 is placed on the first tab ear 31, the surfaces of the first connecting portion 11 and the second connecting portion 12 away from the first tab ear 31 are flush.

[0056] In this alternative embodiment, since the first connecting portion 11 is arranged along the extending direction of the first tab ear 31 and the first connecting portion 11 is in a strip structure, the connection length between the first connecting portion 11 and the first tab ear 31 can be increased, thereby correspondingly improving the welding connection stability between the first connecting row 1 and the first tab ear 31. Since the second connecting portion 12 is located on the side of the first connecting portion 11 facing the second tab ear 32, it is helpful for the connection and fixation of the second connecting portion 12 and the first tab ear 31.

[0057] Optionally, as shown in combination with Figure 3 and Figure 4 , the third connecting portion 21 and the fourth connecting portion 22 are stacked. The third connecting portion 21 is in a strip structure and is arranged along the extending direction of the second tab ear 32. The second tab ear 32 includes a second bending portion 321. The third connecting portion 21 and the fourth connecting portion 22 are respectively on the opposite sides of the second bending portion 321;

[0058] The first tab 31 includes a first bent portion 311, and the bending direction of the first bent portion 311 is opposite to the bending direction of the second bent portion 321.

[0059] Specifically, the third connecting portion 21 and the fourth connecting portion 22 can be stacked in the following manner. For example, the third connecting portion 21 is a strip structure, and the extending direction of the third connecting portion 21 is parallel to the extending direction of the second tab 32. A part of the third connecting portion 21 first bends away from the core package body 4 and then bends in the opposite direction of the second bent portion 321 and extends horizontally to form the fourth connecting portion 22. In other words, it is equivalent to the entire second connecting row 2 being bent 180 degrees to form the fourth connecting portion 22 and the third connecting portion 21 that are parallel to each other. Therefore, both the third connecting portion 21 and the fourth connecting portion 22 are parallel to the top cover 5.

[0060] The third connecting portion 21 can be disposed on the side of the second bent portion 321 facing the core package body 4, and the fourth connecting portion 22 can be disposed on the side of the second bent portion 321 facing away from the core package body 4. Therefore, the third connecting portion 21 and the fourth connecting portion 22 are respectively on the opposite sides of the second bent portion 321.

[0061] The first bent portion 311 means that the electrode of a core package body 4 in the blade battery extends out of the end of the core package body 4 and is bent, and this bent part is the first bent portion 311; the second bent portion 321 means that the electrode of another core package body 4 in the blade battery extends out of the end of the core package body 4 and is bent, and this bent part is the second bent portion 321.

[0062] In this alternative embodiment, since the first connecting row 1 is disposed on the bent portion of the first tab 31, and the fourth connecting portion 22 and the third connecting portion 21 of the second connecting row 2 are respectively on the opposite sides of the second bent portion 321, at this time, relying on the stacked third connecting portion 21 and fourth connecting portion 22, not only can the surfaces of the first connecting row 1 and the second connecting row 2 on the side away from the corresponding tab 3 be made flush, so as to improve the welding stability of the first connecting row 1 and the second connecting row 2 with the current collecting base portion 51 of the top cover 5, but also the third connecting portion 21 of the second connecting row 2 is located above the two core package bodies 4. When the second connecting row 2 is welded to the second bent portion 321, the stability of the second connecting row 2 installed on the corresponding core package body 4 can also be effectively increased.

[0063] Optionally, in combination with Figure 3 As shown, a second bent hole structure 23 is provided at the bent connection of the third connecting portion 21 and the fourth connecting portion 22.

[0064] Specifically, the second bent hole structure 23 can be a through hole or a plurality of through holes distributed at intervals along the extending direction of the third connecting portion 21.

[0065] In this alternative embodiment, since a part of the third connecting portion 21 is bent to form the fourth connecting portion 22, by providing a second bending hole structure 23 at the bending connection between the two, the bending difficulty can be effectively reduced, making it easier to bend. At the same time, the bending accuracy can be ensured, and the bending portion between the third connecting portion 21 and the fourth connecting portion 22 can be made smoother.

[0066] Optionally, different from the above embodiment where only one connecting row, such as the second connecting row 2, is bent, in this embodiment, both the first connecting row 1 and the second connecting row 2 are bent. For example, as shown in combination with Figures 5 to 8 the first connecting portion 11 and the second connecting portion 12 are stacked. The first connecting portion 11 is a strip-shaped structure and is arranged along the extending direction of the first tab 31. The first tab 31 includes a first bending portion 311. The first connecting portion 11 and the second connecting portion 12 are respectively on opposite sides of the first bending portion 311;

[0067] the third connecting portion 21 and the fourth connecting portion 22 are stacked. The third connecting portion 21 is a strip-shaped structure and is arranged along the extending direction of the second tab 32. The second tab 32 includes a second bending portion 321. The third connecting portion 21 and the fourth connecting portion 22 are respectively on opposite sides of the second bending portion 321.

[0068] Specifically, the first connecting row can be bent in the following manner. A part of the first connecting portion 11 is first bent away from the core package body 4, and then bent in the opposite direction of the first bending portion and horizontally extended to form the second connecting portion 12. In other words, it is equivalent to the entire first connecting row 1 being bent 180 degrees to form the mutually parallel first connecting portion 11 and the second connecting portion 12. Therefore, both the first connecting portion 11 and the second connecting portion 12 are parallel to the top cover 5.

[0069] Among them, the connection and fixation of the two connecting rows with the corresponding tabs 3 and the top cover 5 can be realized in the following manner. Taking the first connecting row 1 as an example, after bending a part of the structure of the first connecting portion 11 to form the second connecting portion 12, the first connecting row 1 is moved to the first bending portion 311, and the first connecting portion 11 and the second connecting portion 12 are respectively placed on the opposite sides of the first bending portion 311. At this time, the first connecting portion 11 can be welded to the first bending portion 311 to realize the welding operation of the first connecting row 1 and the first tab 31. Taking the second connecting row 2 as an example, after bending a part of the structure of the third connecting portion 21 to form the fourth connecting portion 22, the second connecting row 2 is moved to the second bending portion 321, and the third connecting portion 21 and the fourth connecting portion 22 are respectively placed on the opposite sides of the first bending portion 311. At this time, the third connecting portion 21 can be welded to the second bending portion 321 to realize the welding operation of the second connecting row 2 and the second tab 32; at this time, since the second connecting portion 12 and the fourth connecting portion 22 are arranged along the extending direction of the two tabs 3, the welding operation can be performed on the connection between the second connecting portion 12 and the fourth connecting portion 22 to realize the welding and fixation of the first connecting row 1 and the second connecting row 2. Finally, the connection between the second connecting portion 12 and the fourth connecting portion 22 is welded and fixed to the current collecting base 51 of the top cover 5, so as to realize the connection and fixation of the two tabs 3 of the two core package bodies 4 and the top cover 5 through the above two connecting rows.

[0070] Optionally, as shown in combination with Figure 5 and Figure 6 , the bending directions of the first bending portion 311 and the second bending portion 321 are the same; or, as shown in combination with Figure 7 and Figure 8 , the bending directions of the first bending portion 311 and the second bending portion 321 are opposite.

[0071] Specifically, as shown in combination with Figure 5 and Figure 6 , the bending directions of the first bending portion 311 of the first tab 31 and the second bending portion 321 of the second tab 32 are the same. For example, the bending extension directions of the first bending portion 311 and the second bending portion 321 can both be consistent with the positive direction of the X-axis in the Figure 5 coordinate system, or the bending extension directions of the first bending portion 311 and the second bending portion 321 can both be consistent with the negative direction of the X-axis in the Figure 5 coordinate system. At this time, the extending directions of the second connecting portion 12 and the fourth connecting portion 22 are the same.

[0072] [[ID=!Combined with Figure 7 and Figure 8 shown, the bending directions of the first bending portion 311 of the first tab 31 and the second bending portion 321 of the second tab 32 are opposite. For example, the bending extension direction of the first bending portion 311 is the same as that ofFigure 7 is consistent with the reverse direction of the X-axis in the coordinate system, and the bending extension direction of the second bending portion 321 is Figure 7 consistent with the positive direction of the X-axis in the coordinate system. At this time, the extension direction of the second connecting portion 12 is opposite to the extension direction of the fourth connecting portion 22.

[0073] Combined with Figure 6 and Figure 8 As shown, a first bending hole structure 13 is provided at the bending connection of the first connecting portion 11 and the second connecting portion 12, and a second bending hole structure 23 is provided at the bending connection of the third connecting portion 21 and the fourth connecting portion 22.

[0074] Specifically, the first bending hole structure 13 can effectively reduce the bending difficulty of the first connecting row 1, making it easier to bend. At the same time, it can also ensure the bending accuracy and make the bending at the connection between the first connecting portion 11 and the second connecting portion 12 smoother. Similarly, the second bending hole structure 23 can effectively reduce the bending difficulty of the second connecting row 2, making it easier to bend. At the same time, it can also ensure the bending accuracy and make the bending at the connection between the third connecting portion 21 and the fourth connecting portion 22 smoother.

[0075] Combined with Figure 9 、 Figure 10 As shown, a blade battery provided by an embodiment of the present invention includes the tab connection structure 100 as described in the above embodiment, and further includes a housing 6, at least one top cover 5 and two core package bodies 4. The housing 6 is a hollow shell structure with at least one end open. The two core package bodies 4 are installed in the housing 6, and the top cover 5 is correspondingly arranged at the opening of the housing 6. One ends of the two core package bodies 4 facing the same opening are connected to the top cover 5 through a tab connection structure 100.

[0076] Specifically, the above tab connection structure 100 can be provided only at the same end of the two core package bodies 4, or the above tab connection structure 100 can be provided at two different ends of the core package body 4.

[0077] Taking the example of arranging the above ear connection structure 100 at two different ends of the core package body 4, for example, the blade battery includes two top covers 5 and two ear connection structures 100. The same-polarity ends of the two core package bodies 4, such as the positive ends, extend to the ends of their respective core package bodies 4 to respectively form a first ear 31 and a second ear 32 of an ear connection structure 100. The first ear 31 and the second ear 32 are respectively bent to form a first bent portion 311 and a second bent portion 321. The positive poles of the two core package bodies 4 can be welded and fixed to a top cover 5 through an ear connection structure 100. The same-polarity ends of the two core package bodies 4, such as the negative ends, extend to the ends of their respective core package bodies 4 to respectively form a first ear 31 and a second ear 32 of another ear connection structure 100. The negative poles of the two core package bodies 4 can be welded and fixed to another top cover 5 through another ear connection structure 100.

[0078] In addition, the following specific connection structure can be adopted between an ear connection structure 100 and a top cover 5. For example, as shown in Figure 11 the figure, the top cover 5 includes a top cover body 52, a spacer 53, and a current collecting base 51. The spacer 53 is arranged on the side of the ear connection structure 100 away from the two core package bodies 4, and the top cover body 52 is arranged on the side of the spacer 53 away from the two core package bodies 4. The current collecting base 51 penetrates through the spacer 53 and the top cover body 52. One end of the current collecting base 51 is welded and fixed to the second connection portion 12 of the first connection row 1 and the fourth connection portion 22 of the second connection row 2. The other end of the current collecting base 51 can serve as the electrode post at one end of the entire blade battery.

[0079] Among them, the spacer 53 can be a plate-like structure made of an insulating material such as plastic, which plays an insulating role between the ear connection structure 100 and the top cover body 52, and restricts the movement of the underlying core package body 4 along the extension direction of the casing (i.e., Figure 10 the Z-axis direction of the coordinate system shown). The top cover body 52 can be made of a metal such as aluminum. The top cover body 52 can not only serve as the installation base for the current collecting base 51, but also be connected and fixed to the casing 6 to play a role in sealing the open end of the casing 6.

[0080] The blade battery at least has all the technical effects of the ear connection structure 100, which will not be elaborated here.

[0081] An electrical equipment provided by an embodiment of the present invention includes the blade battery as described in the above embodiment.

[0082] Specifically, the electrical equipment can be an electric vehicle, an electric bus, an electric tourist vehicle, etc. As long as it is an electric vehicle that requires a blade battery, it is applicable to this technical solution, and no specific limitation is made here.

[0083] The beneficial effects of the electrical equipment in this embodiment are the same as those of the blade battery described above, and will not be elaborated here.

[0084] Although the present utility model is disclosed as above, the protection scope of the present utility model is not limited thereto. Without departing from the spirit and scope of the present utility model, those skilled in the art can make various changes and modifications, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims

1. An ear connection structure, characterized in that, It includes two tab ears (3) with the same polarity, a first connection row (1) and a second connection row (2). The first connection row (1) and the second connection row (2) are respectively welded to the corresponding tab ears (3). One side surfaces of the first connection row (1) and the second connection row (2) away from their respective corresponding tab ears (3) are flush, and are used to connect with the top cover (5) of the battery.

2. The tab connection structure according to claim 1, wherein The two tab ears (3) are respectively a first tab ear (31) and a second tab ear (32). The first connection row (1) includes a first connection part (11) and a second connection part (12) connected to each other. The first connection part (11) is welded to the first tab ear (31); The second connection row (2) includes a third connection part (21) and a fourth connection part (22) connected to each other. The third connection part (21) is welded to the second tab ear (32). The fourth connection part (22) and the second connection part (12) are in the same plane and are welded to each other. One side surface of the fourth connection part (22) and the second connection part (12) away from their respective corresponding tab ears (3) is used to connect with the top cover (5) of the battery.

3. The tab connection structure according to claim 2, wherein, The fourth connection part (22) and the second connection part (12) are arranged along the extension direction of the two tab ears.

4. The tab connection structure according to claim 2, wherein, The first connection part (11) and the second connection part (12) are in the same plane. The first connection part (11) is in a strip structure and is arranged along the extension direction of the first tab ear (31). The first connection part (11) is arranged on the first tab ear (31). The second connection part (12) is located on the side of the first connection part (11) facing the second tab ear (32).

5. The tab connection structure according to claim 4, wherein The third connection part (21) and the fourth connection part (22) are stacked. The third connection part (21) is in a strip structure and is arranged along the extension direction of the second tab ear (32). The second tab ear (32) includes a second bending part (321). The third connection part (21) and the fourth connection part (22) are respectively on the opposite sides of the second bending part (321); The first tab ear (31) includes a first bending part (311). The bending direction of the first bending part (311) is opposite to the bending direction of the second bending part (321).

6. The tab connection structure according to claim 5, characterized in that, A second bending hole structure (23) is provided at the bending connection of the third connection part (21) and the fourth connection part (22).

7. The tab connection structure according to claim 2, characterized in that The first connection part (11) and the second connection part (12) are stacked. The first connection part (11) is in a strip structure and is arranged along the extension direction of the first tab ear (31). The first tab ear (31) includes a first bending part (311). The first connection part (11) and the second connection part (12) are respectively on the opposite sides of the first bending part (311); The third connecting part (21) and the fourth connecting part (22) are stacked, the third connecting part (21) is in a strip structure, and the third connecting part (21) is arranged along the extending direction of the second tab (32). The second tab (32) includes a second bending part (321), and the third connecting part (21) and the fourth connecting part (22) are respectively on two opposite sides of the second bending part (321).

8. The tab connection structure according to claim 7, wherein The bending direction of the first bending part (311) is the same as that of the second bending part (321); Alternatively, the bending direction of the first bending part (311) is opposite to that of the second bending part (321).

9. A blade battery, characterized in that, It includes the tab connection structure according to any one of claims 1 to 8, and further includes a casing (6), at least one top cover (5) and two core package bodies (4). The casing (6) is a hollow shell structure with at least one end open. The two core package bodies (4) are installed in the casing (6), and the top cover (5) is correspondingly arranged at the opening of the casing (6). One ends of the two core package bodies (4) facing the same opening are connected to the top cover (5) through a tab connection structure (100).

10. An electrical device, characterized in that, It includes the blade battery according to claim 9.

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