Soft package battery

Abstract

The utility model relates to the technical field of batteries, in particular to a soft package battery which comprises a pole core and a battery tab, a pole core tab is formed at at least one end of the pole core along a first preset direction, and the battery tab is connected with the pole core tab to form a whole tab; a bending groove is formed in the battery tab, and the whole tab can be bent through the bending groove, so that one part of the whole tab, which is positioned on the inner side of the bending groove and is close to the pole core, is arranged along the end surface of the pole core, and the other part of the whole tab, which is positioned on the outer side of the bending groove and is far away from the pole core, extends along a first preset direction. Therefore, after the pole core tab of the pole core is connected with the battery tab in a welding manner, for example, the pole core tab can be bent by 90 degrees along the root of the pole core tab, so that the welding area of the pole core tab and the battery tab is attached to the end face of the pole core, and the space occupied by the welding area of the pole core tab and the battery tab is saved; therefore, the volume of the pole core is greatly increased, namely the energy density of the soft package battery is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular to a soft-pack battery. Background Art

[0002] At present, with the continuous progress of technology and the increasing demand for clean energy by people, lithium-ion batteries, as an efficient and environmentally friendly energy storage device, are gradually becoming an important part of the future energy field. Under the background of the continuously growing industry, the technical requirements for lithium-ion batteries are also getting higher and higher. One of the current development directions of lithium-ion battery technology is to improve the volumetric and mass energy densities, so as to extend the battery life of devices.

[0003] Most of the soft-pack batteries in the current industry include a jelly roll and an aluminum-plastic film. The jelly roll is made by winding or stacking positive and negative electrode sheets and a separator, and is covered with an aluminum-plastic film. The false tab of the jelly roll led out from the jelly roll and the true tab of the extended jelly roll overlap in the 180° horizontal direction and are connected by welding, and then are heat-sealed to the inner glue layer of the aluminum-plastic film through tab glue. In this structure, the tabs occupy a large space, reducing the energy density of the soft-pack battery. Summary of the Utility Model

[0004] The purpose of the present application is to provide a soft-pack battery, which to a certain extent solves the technical problem in the prior art that the false tab of the jelly roll led out from the jelly roll of the soft-pack battery and the true tab of the extended jelly roll overlap in the 180° horizontal direction and are connected by welding, and then are heat-sealed to the inner glue layer of the aluminum-plastic film through tab glue. In this structure, the tabs occupy a large space, reducing the energy density of the soft-pack battery.

[0005] The present application provides a soft-pack battery, including: a jelly roll and battery tabs; wherein, along a first preset direction, at least one end of the jelly roll is formed with tabs of the jelly roll, and the battery tabs are connected to the tabs of the jelly roll to form an integral tab.

[0006] The battery tab is formed with a bending groove, and the integral tab can be bent through the bending groove, so that a part of the integral tab located inside the bending groove close to the jelly roll is arranged along the end face of the jelly roll, and another part of the integral tab located outside the bending groove far from the jelly roll extends along the first preset direction.

[0007] In the above technical solution, further, after the integral tab is bent, another part of the integral tab located outside the bending groove far from the jelly roll extends along the center line of the jelly roll in the first preset direction.

[0008] In any of the above technical solutions, further, the battery tab includes a connecting portion, a bending groove, and a conductive portion. Before the integral tab is bent, the connecting portion, the bending groove, and the conductive portion are sequentially arranged along the first preset direction, and the connecting portion overlaps and is connected to the electrode core together.

[0009] In any of the above technical solutions, further, along the first preset direction, the length of the connecting portion is H.

[0010] In any of the above technical solutions, further, along the second preset direction, the center line of the electrode core extending along the first preset direction is parallel to the connecting portion, and the height difference between the two is T2, and T2 = H.

[0011] In any of the above technical solutions, further, along the second preset direction, the height of the electrode core is T1; along the second preset direction, the height of the tab of the electrode core is T, and T = T1 / 2 + T2.

[0012] In any of the above technical solutions, further, 3mm ≤ H ≤ 10mm.

[0013] In any of the above technical solutions, further, the first preset direction is the length direction of the electrode core, the second preset direction is the thickness direction of the electrode core, and the second preset direction is perpendicular to the first preset direction.

[0014] In any of the above technical solutions, further, the soft-pack battery further includes a bracket. The bracket is formed with an installation cavity, and the electrode core is installed in the installation cavity. Along the circumferential direction of the electrode core, the bracket surrounds the small surface side of the electrode core;

[0015] The bracket is formed with an avoidance through hole, and a part of the structure of the battery tab extends to the outside of the bracket through the avoidance through hole.

[0016] In any of the above technical solutions, further, the bracket includes a first bracket and a second bracket; wherein, the first bracket is arranged on one side of the electrode core assembly, the second bracket is arranged on the other side of the electrode core assembly, and the first bracket and the second bracket are buckled and connected together; both the first bracket and the second bracket are formed with avoidance through holes.

[0017] In any of the above technical solutions, further, the first bracket and the second bracket are detachably connected by a buckle.

[0018] In any of the above technical solutions, further, positioning convex portions are formed at the four circumferential vertex positions of one of the first bracket and the second bracket, positioning holes are formed at the four circumferential vertex positions of the other of the first bracket and the second bracket, and the positioning convex portions are inserted into the corresponding positioning holes.

[0019] In any of the above technical solutions, further, reinforcing ribs are provided on the sides of the first bracket and the second bracket facing away from the electrode core.

[0020] In any of the above technical solutions, further, both the first bracket and the second bracket are rectangular frames.

[0021] In any of the above technical solutions, further, the minimum gap between the battery tab passing through the avoidance through hole and the avoidance through hole is a, and 5mm ≤ a ≤ 10mm.

[0022] In any of the above technical solutions, further, the soft-pack battery further includes a protective film, and the protective film wraps around the outside of the assembly formed by the electrode core and the bracket; the protective film is formed with a through hole, a part of the structure of the integral tab extends to the outside of the protective film through the through hole, and is thermally melted and connected to the protective film by glue.

[0023] Compared with the prior art, the beneficial effects of the present application are as follows:

[0024] For the soft-pack battery provided by the present application, after the electrode tab of the electrode core is connected to the battery tab, for example, by welding, it can be bent by 90° along the root of the electrode tab of the electrode core, so that the connection area between the electrode tab of the electrode core and the battery tab, such as the welding area, is arranged close to the end face of the electrode core, and then bent by 90° along the bending groove, and finally the electrode tab structure located outside the bending groove extends along the first preset direction to meet the conventional use requirements. It can be seen that the space occupied by the connection area between the electrode tab of the electrode core and the battery tab, such as the welding area, is saved, thereby greatly increasing the volume of the electrode core, that is, greatly improving the energy density of the soft-pack battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic structural diagram of the battery tab provided by the embodiment of the present application;

[0027] Figure 2 This is the initial assembly diagram of the battery tab and the tab of the electrode core provided by the embodiment of the present application;

[0028] Figure 3 This is the final state diagram after the battery tab and the tab of the electrode core provided by the embodiment of the present application are connected and bent;

[0029] Figure 4 This is another final state diagram after the battery tab and the tab of the electrode core provided by the embodiment of the present application are connected and bent;

[0030] Figure 5 It is Figure 4 The enlarged structural schematic diagram at A;

[0031] Figure 6 This is the exploded view of the first bracket, the second bracket and the electrode core provided by the embodiment of the present application;

[0032] Figure 7 This is the assembly diagram of the first bracket, the second bracket and the electrode core provided by the embodiment of the present application;

[0033] Figure 8 This is the structural schematic diagram of the first bracket provided by the embodiment of the present application;

[0034] Figure 9 It is Figure 8 The enlarged structural schematic diagram at B;

[0035] Figure 10 It is Figure 8 The enlarged structural schematic diagram at C;

[0036] Figure 11 This is the structural schematic diagram of the second bracket provided by the embodiment of the present application;

[0037] Figure 12 It is Figure 11 The enlarged structural schematic diagram at D;

[0038] Figure 13 It is Figure 11 The enlarged structural schematic diagram at E;

[0039] Figure 14 This is the assembly schematic diagram of the electrode core, the bracket and the protective film provided by the embodiment of the present application.

[0040] Reference numerals:

[0041] 1 - Core, 11 - Core tab, 12 - Center line, 2 - Battery tab, 21 - Connection part, 211 - Welding area, 22 - Bending groove, 23 - Conductive part, 24 - Solid glue layer, 3 - Bracket, 31 - First bracket, 311 - Positioning protrusion, 312 - Male buckle, 32 - Second bracket, 321 - Positioning hole, 322 - Female buckle, 33 - Avoidance through - hole, 34 - Reinforcing rib, 341 - Horizontal reinforcing rib, 342 - Vertical reinforcing rib, 4 - Protective film. Detailed implementation manners

[0042] The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present application.

[0043] Generally, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application.

[0044] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0047] Next, refer to Figures 1 to 14 Describe a soft - package battery according to some embodiments of the present application.

[0048] Refer to Figures 1 to 5As shown in the figure, an embodiment of the present application provides a soft-pack battery, including: a battery core 1 and a battery tab 2; wherein, along a first preset direction, at least one end of the battery core 1 is formed with a battery-core tab 11, and the battery tab 2 is connected to the battery-core tab 11 to form an integral tab;

[0049] The battery tab 2 is formed with a bending groove 22, and the integral tab can be bent through the bending groove 22, so that a part of the integral tab located inside the bending groove 22 close to the battery core 1 is arranged along the end face of the battery core 1, and another part of the integral tab located outside the bending groove 22 away from the battery core 1 extends along the first preset direction.

[0050] According to the above-described structure, it can be known that for the soft-pack battery provided by the present application, after the battery-core tab 11 of the battery core 1 is connected to the battery tab 2, for example, by welding, it can be bent by 90° along the root of the battery-core tab 11, so that the connection area between the battery-core tab 11 and the battery tab 2, such as the welding area 211, is arranged close to the end face of the battery core 1, and then bent by 90° along the bending groove 22, and finally the structure of the battery-core tab 11 located outside the bending groove 22 extends along the first preset direction, meeting the conventional use requirements. It can be seen that the space occupied by the connection area between the battery-core tab 11 and the battery tab 2, such as the welding area 211, is saved, thereby greatly increasing the volume of the battery core 1, that is, significantly improving the energy density of the soft-pack battery.

[0051] In this embodiment, preferably, as Figure 3 shown, after the integral tab completes the above-mentioned two bends, another part of the integral tab located outside the bending groove 22 away from the battery core 1 extends along the center line 12 of the battery core 1 in the first preset direction. That is to say, the battery core 1 has a center line 12 in the first preset direction. After the integral tab is bent, the part of the battery tab 2 outside the bending groove 22 extends along the aforementioned center line 12. Such a structural design helps the later assembly with other components, helps improve the assembly accuracy, and reduces the design difficulty.

[0052] It should be noted that: after the integral tab completes two bends, another part of the integral tab located outside the bending groove 22 away from the battery core 1 may not be arranged along the center line 12 of the battery core 1 in the first preset direction.

[0053] In this embodiment, preferably, as Figures 1 to 3 shown, the battery tab 2 includes a connecting portion 21, a bending groove 22, and a conductive portion 23. Before the integral tab is bent, the connecting portion 21, the bending groove 22, and the conductive portion 23 are arranged in sequence along the first preset direction, and the connecting portion 21 overlaps with the battery core 1 and is connected together, for example, by welding.

[0054] According to the structure described above, the connecting portion 21 is mainly used as the area connected to the electrode tab 11 of the electrode core 1. The bending groove 22 is more convenient for bending the battery tab 2, so that the bent conductive portion 23 can extend along the aforementioned center line. The conductive portion 23 serves as the electrical connection part and is connected to an external electrical connector to output electrical energy.

[0055] Further, preferably, the bending groove 22 can be an arc-shaped groove, which is convenient for processing and bending.

[0056] Further, preferably, the connecting portion 21, the bending groove 22 and the conductive portion 23 are of an integral structure. Of course, it is not limited to this.

[0057] In this embodiment, preferably, as Figure 2 shown, along the first preset direction, the length of the connecting portion 21 is H;

[0058] Along the second preset direction, the center line 12 of the electrode core 1 extending along the first preset direction is parallel to the connecting portion 21, and the height difference between the two is T2, and T2 = H;

[0059] Along the second preset direction, the height of the electrode core 1 is T1; along the second preset direction, the height of the electrode tab 11 of the electrode core 1 is T, and T = T1 / 2 + T2.

[0060] According to the structure described above, the gathering position of the electrode tab 11, that is, the aforementioned connecting portion 21, satisfies the above formula, so that the part of the finally formed integral tab outside the bending groove 22 is located on the center line 12 that bisects the thickness dimension. This increases the design difficulty of the battery module. Such a structural design helps with the assembly with other components later, helps improve the assembly accuracy, and reduces the design difficulty.

[0061] Further, preferably, as Figure 2 and Figure 3 shown, the first preset direction is the length direction of the electrode core 1, the second preset direction is the thickness direction of the electrode core 1, and the second preset direction is perpendicular to the first preset direction. Of course, it is not limited to this. The first preset direction and the second preset direction can also be other directions.

[0062] In this embodiment, preferably, as Figure 2 shown, 3mm ≤ H ≤ 10mm.

[0063] According to the structure described above, along the first preset direction, if the length of the connecting portion 21 is too large, after bending, the area of the connecting portion 21 may exceed the end face of the electrode core 1, which may cause damage or problems such as short circuit; along the first preset direction, if the length of the connecting portion 21 is too small, the space saved is small, which is not conducive to improving the energy density of the battery cell. It can be seen that, in combination with the above, the length H of the connecting portion 21 is preferably between 3 mm and 10 mm along the first preset direction.

[0064] In this embodiment, preferably, as Figure 6 and Figure 7 shown, the soft-pack battery further includes a bracket 3. The bracket 3 is formed with an installation cavity, and the electrode core 1 assembly is installed in the installation cavity. Along the circumferential direction of the electrode core 1, the bracket 3 surrounds the small surface side of the electrode core 1, which can effectively prevent the deformation of the battery cell.

[0065] The bracket 3 is formed with an avoidance through hole 33, and a part of the structure of the battery tab 2 extends to the outside of the bracket 3 through the avoidance through hole 33.

[0066] According to the structure described above, installing the bracket 3 outside the electrode core 1 assembly can prevent the deformation of the battery cell during turnover transportation and use. Moreover, under extreme conditions such as thermal runaway of the battery cell, it can also prevent other substances such as the internal electrode sheets of the battery from contacting the electrical connection portion 21 of the battery module after the sealing position of the electrode core tab 11 is damaged and depressurized, thereby avoiding problems such as short circuit of the module and improving the overall safety and reliability of the battery module.

[0067] In this embodiment, preferably, as Figure 6 、 Figure 7 、 Figure 8 and Figure 11 shown, the bracket 3 includes a first bracket 31 and a second bracket 32; wherein, the first bracket 31 is arranged on one side of the electrode core 1 assembly, the second bracket 32 is arranged on the other side of the electrode core 1 assembly, and the first bracket 31 and the second bracket 32 are buckled and connected together; both the first bracket 31 and the second bracket 32 are formed with avoidance through holes 33.

[0068] According to the structure described above, designing the overall bracket 3 into the split first bracket 31 and second bracket 32 is convenient for the assembly with the electrode core 1 and improves the convenience of operation.

[0069] It should be noted that: the bracket 3 is not limited to being divided into the first bracket 31 and the second bracket 32, and it can also be an integral structure with an installation opening, which is specifically selected according to actual needs. In addition, this soft-pack battery may not be equipped with the bracket 3, which is specifically selected according to actual needs.

[0070] In this embodiment, preferably, as Figure 7 、 Figure 10 andFigure 12 As shown, the first bracket 31 and the second bracket 32 are detachably connected by a buckle.

[0071] According to the structure described above, the first bracket 31 and the second bracket 32 are connected by a buckle for Z-direction fixation of the two brackets 3. Moreover, the connection method of the buckle is more convenient for installation and disassembly, has repeatability, is convenient for adjustment, and has a simple structure, which is convenient for processing and manufacturing.

[0072] Further, preferably, along the second preset direction, such as the thickness direction of the pole core 1, the first bracket 31 and the second bracket 32 are respectively arranged on both sides of the pole core 1. Of course, it is not limited to this. They can also be arranged on both sides of the pole core 1 along the first preset direction or the third preset direction. Here, the third preset direction refers to the direction perpendicular to the first preset direction and the second preset direction.

[0073] Further, preferably, the first bracket 31 is provided with a male buckle 312, the second bracket 32 is provided with a female buckle 322, and the male buckle 312 is clamped in the female buckle 322.

[0074] It should be noted that the connection method of the first bracket 31 and the second bracket 32 is not limited to the above, and other connection methods can also be adopted, such as gluing, hot melting, etc.

[0075] In this embodiment, preferably, as Figure 8 、 Figure 9 and Figure 13 shown, positioning protrusion parts 311 are formed at the four circumferential vertex positions of one of the first bracket 31 and the second bracket 32, positioning holes 321 are formed at the four circumferential vertex positions of the other of the first bracket 31 and the second bracket 32, and the positioning protrusion parts 311 are inserted into the corresponding positioning holes 321.

[0076] According to the structure described above, the XY-direction fixation of the two brackets 3 is achieved by the cooperation of the positioning protrusion parts 311 and the positioning holes 321.

[0077] Further, preferably, the positioning protrusion parts 311 can be of a cylindrical structure, the positioning holes 321 are round holes, the diameter of the positioning protrusion parts 311 is smaller than the diameter of the positioning holes 321, and the difference between the two is 0.1 - 0.5 mm. Of course, it is not limited to this.

[0078] In this embodiment, preferably, as Figure 8 and Figure 11 shown, reinforcing ribs 34 are provided on the sides of the first bracket 31 and the second bracket 32 facing away from the pole core 1, further playing a role in increasing the strength and effectively resisting deformation.

[0079] Further, preferably, the reinforcing ribs 34 include transverse reinforcing ribs 341 and longitudinal reinforcing ribs 342, forming a grid-like structure. Of course, it is not limited thereto.

[0080] In this embodiment, preferably, as Figure 6 , Figure 7 , Figure 8 and Figure 11 shown, both the first bracket 31 and the second bracket 32 are square frames, which are adapted to the shape of the conventional rectangular pole core 1 to meet the assembly requirements. Of course, it is not limited thereto. When the shape of the pole core 1 changes, the shapes of the first bracket 31 and the second bracket 32 can also change.

[0081] In this embodiment, preferably, as Figure 7 shown, the minimum gap between the battery tab 2 passing through the avoidance through hole 33 and the avoidance through hole 33 is a, and 5 mm ≤ a ≤ 10 mm.

[0082] According to the structure described above, making the minimum gap a between the battery tab 2 and the avoidance through hole 33 take values within the range of 5 mm - 10 mm can effectively avoid interference. Of course, it is not limited thereto.

[0083] In this embodiment, preferably, as Figure 14 shown, the soft-pack battery further includes a protective film 4, and the protective film 4 is wrapped around the outside of the assembly of the pole core 1, the first bracket 31, and the second bracket 32; the protective film 4 is formed with a through hole, and a part of the structure of the battery tab 2 extends to the outside of the protective film 4 through the through hole and is thermally melted and connected to the protective film 4 by glue. Preferably, when the material arrives, the solid glue layer 24 is provided on the conductive part 23 of the battery tab 2, and it can be thermally bonded to the protective film 4 later.

[0084] According to the structure described above, the protective film 4 plays a role in protecting the pole core 1. Preferably, the protective film 4 can be an aluminum-plastic film. Of course, it is not limited thereto, and other suitable protective films 4 can also be selected for use.

[0085] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A soft-pack battery, characterized in that, Comprising: A pole core and a battery pole ear; wherein, along a first preset direction, at least one end of the pole core is formed with a pole core ear, and the battery pole ear is connected to the pole core ear to form an integral pole ear; The battery pole ear is formed with a bending groove, and the integral pole ear can be bent through the bending groove, so that a part of the integral pole ear located on the inner side of the bending groove close to the pole core is arranged along the end face of the pole core, and another part of the integral pole ear located on the outer side of the bending groove far from the pole core extends along the first preset direction.

2. The soft-pack battery according to claim 1, wherein When the integral pole ear is bent, another part of the integral pole ear located on the outer side of the bending groove far from the pole core extends along the center line of the pole core in the first preset direction.

3. The soft-pack battery according to claim 1, wherein The battery pole ear includes a connecting portion, a bending groove and a conductive portion, and before the integral pole ear is bent, the connecting portion, the bending groove and the conductive portion are arranged in sequence along the first preset direction, and the connecting portion overlaps and is connected to the pole core.

4. The soft-pack battery according to claim 3, wherein Along the first preset direction, the length of the connecting portion is H.

5. The soft-pack battery according to claim 4, characterized in that, Along a second preset direction, the center line of the pole core extending along the first preset direction is parallel to the connecting portion, and the height difference between the two is T2, and T2 = H.

6. The soft-pack battery according to claim 5, characterized in that, Along the second preset direction, the height of the pole core is T1; along the second preset direction, the height of the pole core ear of the pole core is T, and T = T1 / 2 + T2; and / or 3mm ≤ H ≤ 10mm; and / or The first preset direction is the length direction of the pole core, the second preset direction is the thickness direction of the pole core, and the second preset direction is perpendicular to the first preset direction.

7. The soft-pack battery according to any one of claims 1 to 6, characterized in that, The soft-pack battery further includes a bracket, the bracket is formed with an installation cavity, and the pole core is installed in the installation cavity, and along the circumferential direction of the pole core, the bracket surrounds the small surface side of the pole core; The bracket is formed with an avoidance through hole, and a part of the structure of the battery pole ear extends to the outside of the bracket through the avoidance through hole.

8. The soft-pack battery according to claim 7, characterized in that, The bracket includes a first bracket and a second bracket; wherein, the first bracket is arranged on one side of the pole core assembly, the second bracket is arranged on the other side of the pole core assembly, and the first bracket and the second bracket are buckled and connected together; both the first bracket and the second bracket are formed with avoidance through holes.

9. The soft-pack battery according to claim 8, characterized in that, The first bracket and the second bracket are detachably connected by a buckle; and / or Positioning convex portions are formed at the four vertex positions in the circumferential direction of one of the first bracket and the second bracket, positioning holes are formed at the four vertex positions in the circumferential direction of the other of the first bracket and the second bracket, and the positioning convex portions are inserted into the corresponding positioning holes; and / or Reinforcing ribs are arranged on the sides of the first bracket and the second bracket facing away from the pole core; and / or Both the first bracket and the second bracket are rectangular frames; and / or The minimum gap between the battery pole ear passing through the avoidance through hole and the avoidance through hole is a, and 5mm ≤ a ≤ 10mm.

10. The soft-pack battery according to claim 7, characterized in that, The soft-pack battery further includes a protective film, and the protective film wraps around the outside of the assembly formed by the electrode core and the bracket; the protective film is formed with a through hole, and a part of the integral tab extends to the outside of the protective film through the through hole and is connected to the protective film by hot-melt adhesive.

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