Insulating member and battery

Abstract

The application provides an insulating piece and a battery. The insulating piece comprises an insulating layer and a reinforcing piece, the insulating piece is used for winding to the outer circumferential surface of the winding core of the battery, the reinforcing piece is protruded on the side of the insulating layer away from the winding core, and at least one side of the reinforcing piece is used for forming an exhaust passage. By protruding the reinforcing piece on one side of the insulating layer, when the insulating layer is wound to the outer circumferential surface of the winding core, the strength of the winding core against deformation can be improved, if the winding core occurs thermal runaway, the setting of the reinforcing piece can avoid the winding core from blocking the exhaust passage due to excessive deformation, so that the smoothness of the exhaust passage is maintained, and the risk of disintegration or explosion of the battery is reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to an insulating component and a battery. Background Technology

[0002] In power batteries, an insulating component is often wound around the outer circumference of the battery core to improve battery safety. When the battery is subjected to abuse such as being punctured, thermal runaway can occur. However, the insulating component used in this technology lacks structural strength. During thermal runaway, the core may deform severely and directly block the battery's pressure relief channels, leading to cracks in the battery casing or even explosion. Utility Model Content

[0003] The embodiments of this application provide an insulating component and a battery that can improve the problem of low structural strength of the insulating component.

[0004] In a first aspect, embodiments of this application provide an insulating member for use in a battery, the insulating member comprising:

[0005] An insulating layer for winding onto the outer peripheral surface of the battery core;

[0006] A reinforcing member protrudes from the side of the insulation layer opposite to the winding core, and at least one side of the reinforcing member is used to form an exhaust channel.

[0007] By protruding a reinforcing member on one side of the insulation layer, the core's resistance to deformation is increased when the insulation layer is wound to the outer circumference of the core. If thermal runaway occurs in the core, the reinforcing member can prevent the core from blocking the exhaust channel due to excessive deformation, thereby maintaining the smooth flow of the exhaust channel and reducing the risk of battery disintegration or explosion.

[0008] In one embodiment, the insulating member includes a plurality of reinforcing members extending along a first direction and disposed along a second direction, which is the winding direction of the insulating layer and forms an angle with the first direction. The plurality of reinforcing members are disposed circumferentially along the wound insulating layer, while the reinforcing members themselves can be disposed axially along the wound insulating layer. This allows the exhaust channel formed between two adjacent reinforcing members to extend axially along the core, thereby facilitating the discharge of gas in the event of thermal runaway of the core.

[0009] In one embodiment, along the second direction, the width of the side of the reinforcing member facing away from the insulating layer is smaller than the width of the side of the reinforcing member facing the insulating layer. That is, the cross-section of the reinforcing member has a trapezoidal structure. This arrangement ensures sufficient contact area between the reinforcing member and the insulating layer to guarantee the stability of the connection between them. Simultaneously, it reduces the winding width of the reinforcing member when the entire insulating member is wound circumferentially around the core, thereby reducing the risk of cracking due to bending during winding.

[0010] In one embodiment, along the first direction, the reinforcing member extends from one edge of the insulating layer to the other edge of the insulating layer. That is, the reinforcing member extends along the entire axial direction of the insulating layer to strengthen the insulating layer throughout the entire axial direction. This prevents one end of the insulating layer from being blocked by severe deformation due to thermal runaway deformation of the core, thereby further ensuring that the reinforcing member can maintain the unobstructed venting channel and reducing the risk of battery disintegration or explosion.

[0011] In one embodiment, along the second direction, the spacing L1 between two adjacent reinforcing members is greater than or equal to 3 mm and less than or equal to 15 mm. By setting the spacing L1 between two adjacent reinforcing members to be greater than or equal to 3 mm and less than or equal to 15 mm, it is possible to ensure that the insulation component as a whole has good structural strength, avoid the core from blocking the exhaust channel due to excessive deformation, and thus maintain the unobstructed exhaust channel.

[0012] In one embodiment, the plurality of reinforcing members are distributed in at least two rows along the first direction, with the reinforcing members spaced apart from adjacent rows. By distributing the plurality of reinforcing members in at least two rows along the first direction, the length of a single reinforcing member along the first direction can be reduced, thereby reducing the risk of cracking due to winding and bending. At the same time, an exhaust channel can be formed between two adjacent reinforcing members along the first direction to increase the gas discharge path and reduce the risk of blockage of the exhaust channel.

[0013] In one embodiment, along the first direction, the spacing between two adjacent reinforcing members is greater than or equal to 3 mm and less than or equal to 15 mm. By setting the spacing L2 between two adjacent reinforcing members to be greater than or equal to 3 mm and less than or equal to 15 mm, it is possible to ensure that the insulation component as a whole has good structural strength, avoid the core from blocking the exhaust channel due to excessive deformation, and thus maintain the unobstructed exhaust channel.

[0014] In one embodiment, the reinforcing members between adjacent rows are staggered along the first direction. By staggering the reinforcing members between adjacent rows along the first direction, the uniformity of the distribution of the reinforcing members on the outer peripheral surface of the insulation layer can be improved, thereby improving the overall structural strength uniformity of the insulation. At the same time, it can also increase the gas discharge path and reduce the risk of blockage of the exhaust channel.

[0015] In one embodiment, the thickness of the reinforcing member is greater than or equal to 0.3 mm and less than or equal to 1.0 mm. By setting the thickness of the reinforcing member to be greater than or equal to 0.3 mm and less than or equal to 1.0 mm, the risk of cracking of the reinforcing member can be reduced while ensuring that the reinforcement effectively enhances the structural strength of the insulation layer.

[0016] Secondly, embodiments of this application provide a battery, comprising:

[0017] Core;

[0018] The insulating element described in any of the preceding claims is wound onto the outer peripheral surface of the core.

[0019] The beneficial effects of the embodiments of this application are as follows:

[0020] In embodiments of this application, the insulating member includes an insulating layer and a reinforcing member. The insulating member is wound onto the outer peripheral surface of the battery core, and the reinforcing member protrudes from the side of the insulating layer opposite to the core. At least one side of the reinforcing member is used to form an exhaust channel. By providing a reinforcing member protruding from one side of the insulating layer, the core's resistance to deformation is increased when the insulating layer is wound onto the outer peripheral surface of the core. If thermal runaway occurs in the core, the reinforcing member can prevent the core from blocking the exhaust channel due to excessive deformation, thereby maintaining the unobstructed exhaust channel and reducing the risk of battery disintegration or explosion. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the unfolded structure of the first type of insulating component provided in the embodiments of this application;

[0023] Figure 2 This is a schematic diagram of the structure of the first type of insulating element wound to the outer circumferential surface of the core provided in the embodiments of this application;

[0024] Figure 3This is a schematic diagram of the unfolded structure of the second type of insulating member provided in the embodiments of this application;

[0025] Figure 4 This is a schematic diagram of the structure of the second type of insulating element wound to the outer peripheral surface of the core, provided in the embodiments of this application;

[0026] Figure 5 This is a schematic diagram of the structure of a battery provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Insulating component; 11. Insulating layer; 12. Reinforcing component; 13. Exhaust channel; X, first direction; Y, second direction;

[0029] 2. Battery; 21. Core; 22. Casing. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0031] First, this application provides an insulating component; please refer to [link to relevant documentation]. Figure 1 and Figure 2 The insulating component 1 is used in the battery 2. The insulating component 1 includes an insulating layer 11, which is used to be wound onto the outer peripheral surface of the core 21 of the battery 2. That is, when the insulating component 1 is applied to the battery 2, the insulating layer 11 in the insulating component 1 directly covers the outer peripheral surface of the core 21 to separate the core 21 as a whole from the casing 22 of the battery 2, thereby improving the safety of the battery 2.

[0032] The insulating member 1 includes a reinforcing member 12, which protrudes from the side of the insulating layer 11 away from the core 21. At least one side of the reinforcing member 12 forms an exhaust channel 13. That is, when the insulating layer 11 is wound to the outer peripheral surface of the core 21, the reinforcing member 12 is located on the side of the insulating layer 11 away from the core 21 and protrudes from the outer peripheral surface of the insulating layer 11. When the core 21 deforms due to thermal runaway, even if the core 21 is severely deformed and the insulating layer 11 is attached to the inner surface of the outer casing, the reinforcing member 12 protrudes from the outer peripheral surface of the insulating layer 11, so that at least one side of the reinforcing member 12 can form an exhaust channel 13 to facilitate the discharge of gas inside the battery 2 and reduce the risk of disintegration or explosion of the battery 2.

[0033] The reinforcing member 12 can be a ceramic component, which, while strengthening the insulation layer 11, ensures the overall insulation performance of the insulation component 1. The reinforcing member 12 can be fabricated on the insulation layer 11 using spraying or other processes. The specific fabrication process can be selected and adjusted according to actual design requirements, and no special restrictions are imposed here.

[0034] In the embodiments of the application, the insulating member 1 includes an insulating layer 11 and a reinforcing member 12. The insulating member 1 is used to wind onto the outer peripheral surface of the core 21 of the battery 2. The reinforcing member 12 protrudes from the side of the insulating layer 11 away from the core 21, and at least one side of the reinforcing member 12 is used to form an exhaust channel 13. By providing a reinforcing member 12 protruding from one side of the insulating layer 11, the strength of the core 21 against deformation can be improved when the insulating layer 11 is wound onto the outer peripheral surface of the core 21. If the core 21 experiences thermal runaway, the reinforcing member 12 can prevent the core 21 from blocking the exhaust channel 13 due to excessive deformation, thereby maintaining the unobstructed flow of the exhaust channel 13 and reducing the risk of the battery 2 disintegrating or exploding.

[0035] In some embodiments, the insulating member 1 includes a plurality of reinforcing members 12, which extend along a first direction X and are disposed along a second direction Y, with an exhaust channel 13 formed between adjacent reinforcing members 12; wherein, the second direction Y is the winding direction of the insulating layer 11, and the second direction Y forms an angle with the first direction X. That is, the reinforcing members 12 have a strip-shaped structure, and the plurality of reinforcing members 12 are disposed circumferentially after the insulating layer 11 is wound, while the reinforcing members 12 themselves can be disposed axially after the insulating layer 11 is wound, so that the exhaust channel 13 formed between adjacent reinforcing members 12 can extend axially along the core 21, thereby facilitating the discharge of gas when the core 21 experiences thermal runaway.

[0036] In some examples, the first direction X can also be set as the winding direction of the insulating layer 11, that is, the reinforcing member 12 can extend circumferentially along the insulating layer 11 after winding, but the reinforcing member 12 has an outlet for gas discharge in the extension direction, that is, the reinforcing member 12 is an incomplete annular structure, so that the gas generated when the core 21 undergoes thermal runaway can be discharged in time.

[0037] It should be noted that, in addition to being long and narrow, the reinforcing member 12 can also be configured in other structural shapes, such as a zigzag or serpentine shape, to increase the contact area between the reinforcing member 12 and the insulating layer 11, thereby improving the overall structural strength of the insulating member 1.

[0038] In some embodiments, when the second direction Y is the winding direction of the insulating layer 11, the width of the side of the reinforcing member 12 away from the insulating layer 11 along the second direction Y is smaller than the width of the side of the reinforcing member 12 facing the insulating layer 11. That is, the cross-section of the reinforcing member 12 has a trapezoidal structure. This arrangement can ensure that there is sufficient contact area between the reinforcing member 12 and the insulating layer 11 to ensure the connection stability between the reinforcing member 12 and the insulating layer 11. At the same time, it can also reduce the winding width of the reinforcing member 12 when the insulating member 1 is wound around the core 21 in the circumferential direction, thereby reducing the risk of cracking of the reinforcing member 12 due to winding bending.

[0039] In some cases, when the reinforcing member 12 is formed on the insulating layer 11, the side of the reinforcing member 12 away from the insulating layer 11 can be directly set as a curved surface to adapt to the bending state when the insulating member 1 is wound around the core 21 in the circumferential direction, thereby further reducing the risk of cracking of the reinforcing member 12 due to winding bending.

[0040] It should be noted that when selecting the material of the reinforcing member 12, an insulating material with an appropriate elastic modulus can be selected to further reduce the risk of cracking of the reinforcing member 12 due to winding and bending.

[0041] In some embodiments, when the second direction Y is the winding direction of the insulating layer 11, the reinforcing member 12 extends from one edge of the insulating layer 11 to the other edge of the insulating layer 11 along the first direction X. That is, the reinforcing member 12 extends along the entire axial direction of the insulating layer 11 to strengthen the insulating layer 11 throughout the entire axial direction. This prevents one end of the insulating layer 11 from being blocked by severe deformation due to thermal runaway deformation of the core 21, thereby further ensuring that the reinforcing member 12 can maintain the unobstructed flow of the exhaust channel 13 and reduce the risk of the battery 2 disintegrating or exploding.

[0042] In some embodiments, along the second direction Y, the distance L1 between two adjacent reinforcing members 12 is greater than or equal to 3 mm and less than or equal to 15 mm. If the distance L1 between two adjacent reinforcing members 12 is too large, the strength of the insulation layer 11 between the two adjacent reinforcing members 12 may not be effectively strengthened. When the core 21 deforms due to thermal runaway, the insulation layer 11 between the two adjacent reinforcing members 12 may also be severely deformed, which is not conducive to maintaining the unobstructed flow of the exhaust channel 13. If the distance L1 between two adjacent reinforcing members 12 is too small, the exhaust channel 13 between the two adjacent reinforcing members 12 may be too small, which is not conducive to the exhaust of gas. By setting the distance L1 between two adjacent reinforcing members 12 to be greater than or equal to 3 mm and less than or equal to 15 mm, it is possible to ensure that the insulation member 1 has good overall structural strength, avoid the core 21 from blocking the exhaust channel 13 due to excessive deformation, and thus maintain the unobstructed flow of the exhaust channel 13.

[0043] In the actual manufacturing process, the spacing L1 between two adjacent reinforcing members 12 can be set to 3mm, 5mm, 8mm, 10mm, 12mm or 15mm, etc. The specific value of the spacing can be selected and adjusted according to the actual design requirements, and there are no special restrictions here.

[0044] In some embodiments, please refer to Figure 3 and Figure 4 Multiple reinforcing members 12 are distributed in at least two rows along the first direction X, with the reinforcing members 12 spaced apart between adjacent rows. That is, when the insulating member 1 is wound to the outer circumferential surface of the core 21, the reinforcing members 12 are distributed in at least two turns along the circumference of the core 21, and the reinforcing members 12 are spaced apart between adjacent turns. By distributing multiple reinforcing members 12 in at least two rows along the first direction X, the length of a single reinforcing member 12 along the first direction X can be reduced, thereby reducing the risk of cracking of the reinforcing member 12 due to winding and bending. At the same time, an exhaust channel 13 can be formed between two adjacent reinforcing members 12 along the first direction X to increase the gas exhaust path and reduce the risk of blockage of the exhaust channel 13.

[0045] In some embodiments, the distance L2 between two adjacent reinforcing members 12 along the first direction X is greater than or equal to 3 mm and less than or equal to 15 mm. If the distance L2 between two adjacent reinforcing members 12 is too large, the strength of the insulation layer 11 between the two adjacent reinforcing members 12 may not be effectively strengthened. When the core 21 deforms due to thermal runaway, the insulation layer 11 between the two adjacent reinforcing members 12 may also be severely deformed, which is not conducive to maintaining the unobstructed flow of the exhaust channel 13. If the distance L2 between two adjacent reinforcing members 12 is too small, the exhaust channel 13 between the two adjacent reinforcing members 12 may be too small, which is not conducive to the exhaust of gas. By setting the distance L2 between two adjacent reinforcing members 12 to be greater than or equal to 3 mm and less than or equal to 15 mm, it is possible to ensure that the insulation member 1 has good overall structural strength, avoid the core 21 from blocking the exhaust channel 13 due to excessive deformation, and thus maintain the unobstructed flow of the exhaust channel 13.

[0046] In the actual manufacturing process, the spacing L2 between two adjacent reinforcing members 12 can be set to 3mm, 5mm, 8mm, 10mm, 12mm or 15mm, etc. The specific value of the spacing can be selected and adjusted according to the actual design requirements, and there are no special restrictions here.

[0047] In some embodiments, the reinforcing members 12 in adjacent rows are staggered along the first direction X. That is, along the first direction X, any reinforcing member 12 in any row is located in the gap region between two adjacent reinforcing members 12 in the adjacent row, thereby achieving the staggered arrangement of the reinforcing members 12 in adjacent rows along the first direction X. By staggering the reinforcing members 12 in adjacent rows along the first direction X, the uniformity of the distribution of the reinforcing members 12 on the outer peripheral surface of the insulation layer 11 can be improved, thereby improving the overall structural strength uniformity of the insulation member 1. At the same time, it can also increase the gas discharge path and reduce the risk of blockage of the exhaust channel 13.

[0048] In some embodiments, the thickness of the reinforcing member 12 is greater than or equal to 0.3 mm and less than or equal to 1.0 mm. If the thickness of the reinforcing member 12 is too large, the risk of cracking during the winding and bending process of the insulating member 1 will increase; if the thickness of the reinforcing member 12 is too small, the reinforcing member 12 will have a poor effect on enhancing the strength of the insulating layer 11, which is not conducive to improving the overall structural stability of the insulating member 1. By setting the thickness of the reinforcing member 12 to be greater than or equal to 0.3 mm and less than or equal to 1.0 mm, the risk of cracking of the reinforcing member 12 can be reduced while ensuring that the reinforcement member 12 effectively enhances the structural strength of the insulating layer 11.

[0049] In the actual manufacturing process, the thickness of the reinforcing member 12 can be set to 0.3mm, 0.5mm, 0.8mm or 1.0mm, etc. The specific value of its thickness can be selected and adjusted according to the actual design requirements, and there are no special restrictions here.

[0050] It should be noted that the insulating layer 11 in this embodiment can be made of high-temperature adhesive paper to ensure the high-temperature stability of the insulating layer 11, thereby ensuring that the insulating component 1 can still have good structural strength when the core 21 experiences thermal runaway, preventing the core 21 from blocking the exhaust channel 13 due to excessive deformation, so as to maintain the unobstructed exhaust channel 13 and reduce the risk of the battery 2 disintegrating or exploding.

[0051] Secondly, this application provides a battery that includes an insulating component. The specific structure of the insulating component is as described in the above embodiments. Since this battery adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0052] Please see Figure 5 The battery 2 includes a core 21 and an insulating member 1. The insulating member 1 is wound to the outer peripheral surface of the core 21. The battery 2 also includes a housing 22. The core 21 and the insulating member 1 are integrally disposed inside the housing 22. The insulating member 1 is used to separate the core 21 and the housing 22 to improve the overall safety of the battery 2.

[0053] Please refer to Figure 1 and Figure 2 The insulating member 1 includes an insulating layer 11 and a reinforcing member 12. The insulating member 1 is used to wind onto the outer peripheral surface of the core 21 of the battery 2. The reinforcing member 12 protrudes from the insulating layer 11 on the side opposite to the core 21, and at least one side of the reinforcing member 12 is used to form an exhaust channel 13. By providing a reinforcing member 12 protruding from one side of the insulating layer 11, the strength of the core 21 against deformation can be improved when the insulating layer 11 is wound onto the outer peripheral surface of the core 21. If the core 21 experiences thermal runaway, the reinforcing member 12 can prevent the core 21 from blocking the exhaust channel 13 due to excessive deformation, thereby maintaining the unobstructed flow of the exhaust channel 13 and reducing the risk of the battery 2 disintegrating or exploding.

[0054] Specifically, the following needle penetration tests were conducted on batteries 2 with different structures, and the test results further illustrate that the setting of the reinforcing member 12 can improve the deformation resistance of the core 21 and maintain the unobstructed flow of the exhaust channel 13.

[0055] Comparative example: The outer periphery of the core 21 is only wrapped with a layer of high-temperature adhesive paper, and then placed in the casing 22 to assemble into battery 2.

[0056] Example 1: Using the same core 21 as the comparative example, an insulating member 1 is wound around the outer periphery of the core 21. The reinforcing member 12 in the insulating member 1 extends from one edge of the insulating layer 11 to the other edge of the insulating layer 11 along the first direction X. Multiple reinforcing members 12 are distributed along the second direction Y. Then, the core 21 and the insulating member 1 are placed in the housing 22 as a whole and assembled into a battery 2.

[0057] Example 2: Using the same core 21 as the comparative example, an insulating member 1 is wound around the outer periphery of the core 21. The reinforcing member 12 in the insulating member 1 extends along the first direction X and is distributed in two rows along the first direction X. Multiple reinforcing members 12 in each row are distributed along the second direction Y. Then, the core 21 and the insulating member 1 are placed in the housing 22 as a whole and assembled into a battery 2.

[0058] During the needle penetration test, all three test cases used a 5mm steel needle and a needle penetration speed of 25mm / s. The test results showed that the battery 2 in the comparative example disintegrated directly, while the battery 2 in Example 1 and Example 2 opened the valve to release pressure normally, and the casing 22 of the battery 2 remained structurally intact.

[0059] According to the above test results, conventional battery 2 will experience blockage of the venting channel 13 during the nail penetration abuse test, resulting in cracking and disintegration of the battery casing 22. In this embodiment, an insulating member 1 is wound around the core 21. The insulating member 1 includes an insulating layer 11 and a reinforcing member 12. The insulating member 1 is wound onto the outer peripheral surface of the core 21 of the battery 2. The reinforcing member 12 protrudes from the side of the insulating layer 11 away from the core 21, and at least one side of the reinforcing member 12 forms the venting channel 13. By protruding the reinforcing member 12 on one side of the insulating layer 11, the deformation resistance of the core 21 is improved when the insulating layer 11 is wound onto the outer peripheral surface of the core 21. If thermal runaway occurs in the core 21, the reinforcing member 12 can prevent the core 21 from blocking the venting channel 13 due to excessive deformation, thereby maintaining the unobstructed flow of the venting channel 13 and reducing the risk of disintegration or explosion of the battery 2, ensuring that the nail penetration test does not fail.

[0060] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An insulating component (1), characterized in that, The insulating element (1) is used in the battery (2), and the insulating element (1) includes: An insulating layer (11) is used to be wound onto the outer peripheral surface of the core (21) of the battery (2); A reinforcing member (12) protrudes from the side of the insulating layer (11) away from the core (21), and at least one side of the reinforcing member (12) is used to form an exhaust channel (13).

2. The insulating component (1) according to claim 1, characterized in that, The insulating member (1) includes a plurality of reinforcing members (12), which extend along a first direction (X) and are arranged along a second direction (Y). The space between two adjacent reinforcing members (12) is used to form the exhaust channel (13). The second direction (Y) is the winding direction of the insulating layer (11), and the second direction (Y) forms an angle with the first direction (X).

3. The insulating component (1) according to claim 2, characterized in that, Along the second direction (Y), the width of the side of the reinforcing member (12) facing away from the insulating layer (11) is smaller than the width of the side of the reinforcing member (12) facing the insulating layer (11).

4. The insulating element (1) according to claim 2, characterized in that, Along the first direction (X), the reinforcement (12) extends from one edge of the insulating layer (11) to the other edge of the insulating layer (11).

5. The insulating component (1) according to claim 2, characterized in that, Along the second direction (Y), the distance L1 between two adjacent reinforcing members (12) is greater than or equal to 3 mm and less than or equal to 15 mm.

6. The insulating element (1) according to claim 2, characterized in that, The plurality of the reinforcing members (12) are distributed in at least two rows along the first direction (X), with the reinforcing members (12) spaced apart between adjacent rows.

7. The insulating element (1) according to claim 6, characterized in that, Along the first direction (X), the distance L2 between two adjacent reinforcing members (12) is greater than or equal to 3 mm and less than or equal to 15 mm.

8. The insulating element (1) according to claim 6, characterized in that, Along the first direction (X), the reinforcing members (12) between adjacent rows are staggered.

9. The insulating member (1) according to any one of claims 1 to 8, characterized in that, The thickness of the reinforcing member (12) is greater than or equal to 0.3 mm and less than or equal to 1.0 mm.

10. A battery (2), characterized in that, include: Core (21); The insulating member (1) according to any one of claims 1 to 9, the insulating member (1) is wound to the outer peripheral surface of the core (21).

Images