Insulation structure and battery

Abstract

The utility model provides an insulation structure and a battery. The insulation structure comprises an insulation body and baffles, the baffles are arranged on at least one side of the insulation body in the width direction, the baffles are rotationally connected with the insulation body, and the rotation axis of the baffles extends in the length direction of the insulation body. The baffle comprises a baffle main body and a connecting part which are mutually connected, the baffle main body extends along the length direction of the insulating body, the connecting part is rotatably connected with the insulating body, and the baffle main body and the insulating body are separately arranged. According to the application, the tab of the battery cell and the shell of the battery are isolated by utilizing the rotary connection of the baffle plate and the insulating body, so that the risk of short circuit caused by contact between the tab of the battery cell and the shell of the battery in a bending state is reduced; the baffle main body and the insulating body are separately arranged, so that the stress generated after the baffle is bent relative to the insulating body and when the baffle is extruded by the tab can be reduced, and the structural stability of the insulating structure in the use process can be ensured.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly relates to an insulating structure and a battery. Background Art

[0002] A battery generally includes a battery cell, a housing, a cover plate, an insulating structure, a tab, and a terminal post. The cover plate is sealed on the housing to form a protective housing with the housing. The battery cell is accommodated in the protective housing. The insulating structure is used to isolate the cover plate from the battery cell. The terminal post is usually passed through the cover plate and the insulating structure to lead the positive and negative electrodes of the battery cell out of the protective housing respectively. In the related art, in order to prevent short circuit when the battery cell tab is bent and contacts the inner wall of the housing, a bendable baffle is provided in the insulating structure to isolate the battery cell tab from the housing. However, the baffle in the related art will generate a large stress concentration when bent, thus affecting the stability of the insulating structure itself and further affecting the overall performance of the battery. Summary of the Utility Model

[0003] Embodiments of this application provide an insulating structure and a battery, which can improve the technical problem of stress concentration generated by the baffle during the process of isolating the battery cell tab from the battery housing.

[0004] In a first aspect, embodiments of this application provide an insulating structure, including:

[0005] An insulating body for isolating the cover plate from the battery cell in the battery; the insulating body includes opposite first and second surfaces, the first surface is used to connect with the cover plate, and the second surface is used to face the battery cell;

[0006] A baffle provided on at least one side of the insulating body in the width direction, the baffle is rotatably connected to the insulating body, and the rotation axis of the baffle extends along the length direction of the insulating body;

[0007] Wherein, the baffle includes a baffle main body and a connecting portion connected to each other. The baffle main body extends along the length direction of the insulating body to isolate the tab of the battery cell from the housing of the battery. The connecting portion is rotatably connected to the insulating body, and the baffle main body is separated from the insulating body.

[0008] In an embodiment, the baffle includes two connecting portions oppositely arranged along the length direction of the insulating body, and the baffle main body is connected between the two connecting portions.

[0009] In an embodiment, the baffle has an unfolded position and a buckled position. When the baffle rotates from the unfolded position to the buckled position, the baffle rotates towards the second surface relative to the insulating body. When the baffle rotates from the buckled position to the unfolded position, the baffle rotates towards the first surface relative to the insulating body.

[0010] In one embodiment, when the baffle is rotated to the locking position, a side of the baffle body facing the cover plate is used to abut against the cover plate.

[0011] In one embodiment, a snap-fitting portion is protruding from the surface of the baffle, and a snap-fitting groove is provided on the side of the insulating body facing the baffle at a position corresponding to the snap-fitting portion; when the baffle is rotated relative to the insulating body toward the second surface to the engaging position, the snap-fitting portion is used to snap-fit ​​with the snap-fitting groove.

[0012] In one embodiment, the clamping portion includes a connecting sub-portion connected to the baffle, and two clamping sub-portions connected to the side of the connecting sub-portion facing away from the baffle, and the two clamping sub-portions are arranged at intervals along the length direction of the insulating body; when the baffle is rotated relative to the insulating body toward the second surface to the locking position, the clamping sub-portion is used to clamp with the clamping groove.

[0013] In one embodiment, in the width direction of the insulating body, the connecting sub-portion has a first orthographic projection on the insulating body, and the first orthographic projection is located in the snap-in groove on opposite sides of the length direction of the insulating body, and the spacing between the first orthographic projection on opposite sides of the length direction of the insulating body and the side walls of the corresponding snap-in groove is less than or equal to 0.2 mm.

[0014] In one embodiment, in the width direction of the insulating body, one side of the two snap-fit ​​sub-portions facing away from each other has a second orthographic projection on the insulating body, and the second orthographic projection portion is located outside the snap-fit ​​groove, and the ratio of the maximum value of the spacing between the portion of the second orthographic projection located outside the snap-fit ​​groove and the side wall corresponding to the snap-fit ​​groove to the thickness of the insulating body is greater than or equal to 0.25 and less than or equal to 1.

[0015] In one embodiment, the baffle is integrally formed with the insulating body, a bending zone is formed at the connection between the connecting portion and the insulating body, and the maximum thickness of the bending zone is smaller than the thickness of the connecting portion, so that the connecting portion is rotatably connected to the insulating body.

[0016] In one embodiment, the baffle body is provided with reinforcing ribs, and the reinforcing ribs extend along the length direction of the insulating body.

[0017] In one embodiment, mounting holes are formed in the insulating body, the mounting holes penetrate through the insulating body along the thickness direction of the insulating body, and the mounting holes are used for mounting the electrode posts of the battery; at least two grooves are formed on one side of the insulating body in the width direction, and the grooves extend along the width direction of the insulating body; in the length direction of the insulating body, the grooves are distributed on opposite sides of the mounting holes.

[0018] In a second aspect, an embodiment of the present application provides a battery, which includes:

[0019] A housing, which forms a receiving cavity;

[0020] A cover plate, which is connected to the housing, and a through hole communicating with the receiving cavity is formed in the cover plate;

[0021] The insulating structure according to any one of the above, the insulating structure is located on the side of the cover plate facing the receiving cavity, and the insulating structure is connected to the cover plate; the baffle in the insulating structure is bent towards the receiving cavity relative to the insulating body;

[0022] An electrode post, which is connected to the cover plate, and the electrode post sequentially passes through the through hole and the mounting hole on the insulating body;

[0023] A battery cell, which is located in the receiving cavity, the electrode tab of the battery cell is electrically connected to the electrode post, and the electrode tab of the battery cell is located on the side of the baffle away from the housing.

[0024] In one embodiment, the electrode tabs are in a dispersed shape, and the electrode tabs protrude towards the baffle to form a protruding portion.

[0025] The beneficial effects of the embodiments of the present application:

[0026] In an embodiment of the present application, the insulating structure includes an insulating body and a baffle. The insulating body is used to isolate the cover plate and the battery cell in the battery. The insulating body includes opposite first and second surfaces. The first surface is used to connect with the cover plate, and the second surface is used to face the battery cell. The baffle is arranged on at least one side of the insulating body along the width direction. The baffle is rotatably connected to the insulating body, and the rotation axis of the baffle extends along the length direction of the insulating body. Wherein, the baffle includes a baffle main body and a connecting portion connected to each other. The baffle main body extends along the length direction of the insulating body to isolate the tab of the battery cell from the outer shell of the battery. The connecting portion is rotatably connected to the insulating body, and the baffle main body is separated from the insulating body. In the present application, by arranging the baffle on at least one side of the insulating body along the width direction and using the rotational connection between the baffle and the insulating body to isolate the tab of the battery cell from the outer shell of the battery, the risk of short circuit caused by the contact between the tab of the battery cell and the outer shell of the battery when the tab is bent is reduced. At the same time, in the present application, by separating the baffle main body of the baffle from the insulating body and only connecting the connecting portion to the insulating body, the stress generated after the baffle is bent relative to the insulating body and the stress generated when the tab of the battery cell presses the baffle when the tab is bent can be reduced, thereby helping to ensure the structural stability of the insulating structure during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 is a three-dimensional structural schematic diagram of an insulating structure provided by an embodiment of the present application;

[0029] Figure 2 is a kind provided by an embodiment of the present application Figure 1 amplified structural schematic diagram of area A therein;

[0030] Figure 3 is a top-view structural schematic diagram of an insulating structure provided by an embodiment of the present application;

[0031] Figure 4 is a front-view structural schematic diagram of an insulating structure provided by an embodiment of the present application;

[0032] Figure 5 is a kind provided by an embodiment of the present application Figure 4 amplified structural schematic diagram of area B therein;

[0033] Figure 6 is a three-dimensional structural schematic diagram of the insulating structure from another perspective provided by an embodiment of the present application;

[0034] Figure 7 This is a schematic diagram of a partial structure of a battery provided by an embodiment of the present application.

[0035] Explanation of reference numerals:

[0036] 10, battery;

[0037] 100, insulating structure; 110, insulating body; 111, first surface; 112, second surface; 113, clamping groove; 114, mounting hole; 115, groove; 120, baffle; 121, connecting portion; 122, baffle body; 123, clamping portion; 1231, connecting sub-portion; 1232, clamping sub-portion; 130, bending region; 140, reinforcing rib; a, rotation axis; X, length direction; Y, width direction; Z, thickness direction;

[0038] 200, outer shell; 210, accommodating cavity;

[0039] 300, cover plate; 310, through hole;

[0040] 400, terminal;

[0041] 500, battery cell; 510, tab; 511, protruding portion. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; and "inner" and "outer" refer to the outline of the device.

[0043] First, an embodiment of the present application provides an insulating structure, as Figure 1 and Figure 2As shown, the insulation structure 100 includes an insulation body 110 which is used to isolate the cover plate 300 and the battery cell 500 in the battery 10. The insulation body 110 includes opposite first and second surfaces 111 and 112. The first surface 111 is used to connect with the cover plate 300, and the second surface 112 is used to face the battery cell 500. That is, when assembling the battery 10, the insulation body 110 is located between the cover plate 300 and the battery cell 500 to prevent the direct contact between the battery cell 500 and the cover plate 300, thus facilitating the electrical connection or insulation design between the battery cell 500 and the cover plate 300.

[0044] The insulation structure 100 further includes a baffle 120 which is arranged on at least one side of the insulation body 110 along the width direction Y. The baffle 120 is rotatably connected to the insulation body 110, and the rotation axis a of the baffle 120 extends along the length direction X of the insulation body 110. That is, the baffle 120 can rotate relative to the insulation body 110 towards the first surface 111 or the second surface 112, that is, the baffle 120 can rotate relative to the insulation body 110 towards the direction close to or away from the battery cell 500. When assembling the battery 10, a pole post 400 penetrates through the cover plate 300 and the insulation body 110. After welding the tab 510 of the battery cell 500 to the pole post 400, the tab 510 of the battery cell 500 will be bent. At this time, the baffle 120 is bent relative to the insulation body 110 towards the direction close to the battery cell 500, so that the baffle 120 is isolated between the tab 510 of the battery cell 500 and the battery housing 200, which can effectively prevent the tab 510 from short-circuiting due to direct contact with the battery housing 200 in the bent state, thus ensuring the normal use of the battery 10.

[0045] Among them, as Figure 3As shown, the baffle 120 includes a baffle main body 122 and a connecting portion 121 that are connected to each other. The baffle main body 122 extends along the length direction X of the insulating body 110 to isolate the tab 510 of the battery cell 500 from the outer shell 200 of the battery 10. The connecting portion 121 is rotatably connected to the insulating body 110, and the baffle main body 122 is separated from the insulating body 110. That is, the baffle 120 is rotatably connected to the insulating body 110 through the connecting portion 121, and the baffle main body 122 for isolating the tab 510 of the battery cell 500 from the outer shell 200 of the battery 10 is completely separated from the insulating body 110. This structural design method enables that when the insulating structure 100 is applied to the battery 10, after the baffle 120 is rotated and bent toward the battery cell 500 relative to the insulating body 110, no stress will be generated between the insulating body 110 and the baffle main body 122. Relatively speaking, the area of the baffle main body 122 is larger than that of the connecting portion 121, which helps to reduce the stress between the insulating body 110 and the whole baffle 120, and also helps to reduce the stress generated when the tab 510 of the battery cell 500 presses the baffle 120 in the bent state, thereby ensuring the structural stability of the insulating structure 100 during use.

[0046] It should be noted that after the tab 510 of the battery cell 500 is welded to the terminal post 400, the whole tab 510 of the battery cell 500 will be bent in one direction. Therefore, the baffle 120 can be provided only on one side corresponding to the bending direction of the tab 510 of the battery cell 500 in the width direction Y of the insulating body 110 to isolate the tab 510 of the battery cell 500 from the outer shell 200 of the battery 10. Of course, according to the different structures of the battery 10, the baffle 120 can also be provided on both opposite sides in the width direction Y of the insulating body 110 at the same time to further reduce the risk of short circuit caused by the contact between the tab 510 of the battery cell 500 and the outer shell 200 of the battery 10. The specific setting method of the baffle 120 can be selected and adjusted according to the actual design requirements, and no special limitation is made here.

[0047] The insulation structure 100 in the embodiments of the present application includes an insulation body 110 and a baffle 120. The insulation body 110 is used to isolate the cover plate 300 and the battery cell 500 in the battery 10. The insulation body 110 includes opposite first surface 111 and second surface 112. The first surface 111 is used to connect with the cover plate 300, and the second surface 112 is used to face the battery cell 500. The baffle 120 is disposed on at least one side of the insulation body 110 along the width direction Y. The baffle 120 is rotatably connected to the insulation body 110, and the rotation axis a of the baffle 120 extends along the length direction X of the insulation body 110. Wherein, the baffle 120 includes a baffle main body 122 and a connecting portion 121 connected to each other. The baffle main body 122 extends along the length direction X of the insulation body 110 to isolate the tab 510 of the battery cell 500 from the outer shell 200 of the battery 10. The connecting portion 121 is rotatably connected to the insulation body 110, and the baffle main body 122 is separated from the insulation body 110. In the present application, by disposing the baffle 120 on at least one side of the insulation body 110 along the width direction Y, and using the rotatable connection between the baffle 120 and the insulation body 110 to isolate the tab 510 of the battery cell 500 from the outer shell 200 of the battery 10, the risk of short circuit caused by the contact between the tab 510 of the battery cell 500 and the outer shell 200 of the battery 10 in the bent state can be reduced. At the same time, in the present application, by separating the baffle main body 122 of the baffle 120 from the insulation body 110 and only connecting the connecting portion 121 to the insulation body 110, the stress generated after the baffle 120 is bent relative to the insulation body 110 and the stress generated when the tab 510 of the battery cell 500 presses the baffle 120 in the bent state can be reduced, thereby helping to ensure the structural stability of the insulation structure 100 during use.

[0048] In some embodiments, the baffle 120 includes two connecting portions 121 oppositely disposed along the length direction X of the insulation body 110. The baffle main body 122 is connected between the two connecting portions 121, that is, the baffle main body 122 is connected to the insulation body 110 through the connecting portions 121 located at both ends thereof. While reducing the stress generated after the baffle 120 is bent relative to the insulation body 110 and the stress generated when the tab 510 of the battery cell 500 presses the baffle 120 in the bent state, it also helps to improve the connection stability between the baffle 120 and the insulation body 110, thereby further improving the structural stability of the overall insulation structure 100 during use.

[0049] Optionally, the baffle 120 has an unfolded position and a buckled position. When the baffle 120 is in the unfolded position, the baffle 120 and the insulating body 110 can be in the same plane, so that before welding the tab 510 of the battery cell 500 to the terminal 400, the entire insulating structure 100 can be laid flat on the cover plate 300, which helps the welding of the tab 510 of the battery cell 500 to the terminal 400. After the welding of the tab 510 of the battery cell 500 to the terminal 400 is completed, the baffle 120 needs to be bent relative to the insulating body 110 so that the baffle 120 is in the buckled position. At this time, the baffle 120 and the insulating body 110 form an angle (such as perpendicular), and the baffle 120 and the insulating body 110 are buckled with each other, which is convenient for subsequent shelling operations. At the same time, the bent baffle 120 can also isolate the tab 510 of the battery cell 500 from the outer shell 200 of the battery 10 to avoid short circuit.

[0050] Wherein, when the baffle 120 rotates from the unfolded position to the buckled position, the baffle 120 rotates relative to the insulating body 110 towards the second surface 112, that is, the baffle 120 rotates relative to the insulating body 110 towards the direction close to the battery cell 500; when the baffle 120 rotates from the buckled position to the unfolded position, the baffle 120 rotates relative to the insulating body 110 towards the first surface 111, that is, the baffle 120 rotates relative to the insulating body 110 towards the direction away from the battery cell 500.

[0051] In some embodiments, when the baffle 120 rotates to the buckled position, the side of the baffle body 122 facing the cover plate 300 is used to abut against the cover plate 300. That is, when the insulating structure 100 is applied to the battery 10, the baffle 120 is in the bent buckled position, and the side of the bent baffle body 122 facing the cover plate 300 directly abuts against the cover plate 300. The mutual acting force between the cover plate 300 and the baffle body 122 can reduce the risk of the baffle 120 deforming under the action of the extrusion force of the tab 510 of the battery cell 500, and further reduce the risk of short circuit caused by the contact between the tab 510 of the battery cell 500 and the outer shell 200 of the battery 10.

[0052] Wherein, the height of the baffle 120 can be designed according to the height of the tab 510 of the battery cell 500 after bending, and it is only necessary to ensure that the height of the baffle 120 is not less than the height of the tab 510 of the battery cell 500 after bending, and no special limitation is made here.

[0053] Optionally, such as Figure 4 and Figure 5As shown, a clamping portion 123 protrudes from the surface of the baffle 120, and a clamping groove 113 is provided at a position corresponding to the clamping portion 123 on the side of the insulating body 110 facing the baffle 120. When the baffle 120 rotates relative to the insulating body 110 towards the second surface 112 to the fastening position, the clamping portion 123 is used to be clamped with the clamping groove 113. That is, when applying the insulating structure 100 to the battery 10, the baffle 120 will be rotated and bent relative to the insulating body 110 towards the second surface 112. After rotation, the clamping portion 123 on the baffle 120 will snap into the clamping groove 113 on the insulating body 110 to ensure the relative stability of the position of the baffle 120 after rotation and bending, and to prevent the baffle 120 from rebounding under the action of stress between the connecting portion 121 and the insulating body 110, or from rebounding under the extrusion action of the tab 510 of the battery cell 500, thereby ensuring the structural stability of the overall insulating structure 100 during use.

[0054] Among them, the clamping portion 123 can be provided on the connecting portion 121, or on the baffle body 122, or on both the connecting portion 121 and the baffle body 122 at the same time. Its specific setting position can be selected and adjusted according to actual design requirements, as long as it is ensured that when the baffle 120 is in the fastening position, the clamping portion 123 can be stably clamped with the clamping groove 113 to ensure the structural stability of the overall insulating structure 100. There is no special limitation here.

[0055] It should be noted that the setting positions of the clamping portion 123 and the clamping groove 113 can be interchanged, that is, the clamping portion 123 is provided on the side of the insulating body 110 facing the connecting portion 121, and the clamping groove 113 is correspondingly provided on the surface of the baffle 120. Its specific setting method can be selected and adjusted according to actual design requirements. There is no special limitation here.

[0056] In some embodiments, the clamping portion 123 includes a connecting sub-portion 1231 connected to the baffle 120, and two clamping sub-portions 1232 connected to the side of the connecting sub-portion 1231 facing away from the baffle 120. The two clamping sub-portions 1232 are spaced apart along the length direction X of the insulating body 110. When the baffle 120 rotates relative to the insulating body 110 towards the second surface 112 to the fastening position, the clamping sub-portions 1232 are used to be clamped with the clamping groove 113. That is, when the baffle 120 rotates and bends relative to the insulating body 110 towards the second surface 112, when the two clamping sub-portions 1232 contact the side wall of the clamping groove 113, they will deform in the direction of approaching each other under the action of the side wall of the clamping groove 113. When the two clamping sub-portions 1232 pass through the clamping groove 113, they will spring open in the opposite direction under the action of the resilience force, thereby realizing the clamping of the two clamping sub-portions 1232 with the clamping groove 113.

[0057] In some other embodiments, such as Figure 5As shown, in the width direction Y of the insulating body 110, the connecting sub - part 1231 has a first orthographic projection on the insulating body 110. The first orthographic projection is located within the clamping grooves 113 on opposite sides in the length direction X of the insulating body 110. The distance D1 between the opposite sides of the first orthographic projection in the length direction X of the insulating body 110 and the side walls of the corresponding clamping grooves 113 is less than or equal to 0.2 mm. If this distance D1 is too large, it may lead to a poor clamping effect between the clamping sub - part 1232 and the clamping groove 113, making it easy for the clamping sub - part 1232 to disengage from the clamping groove 113 under the action of an external force, thus affecting the overall structural stability of the insulating structure 100.

[0058] Specifically, during the actual manufacturing process, the distance D1 can be set to 0.05 mm, 0.1 mm, 0.15 mm, or 0.2 mm, etc. Its specific value can be selected and adjusted according to actual design requirements, as long as the effective clamping between the clamping sub - part 1232 and the clamping groove 113 is ensured, and there is no special limitation here.

[0059] In some other embodiments, in the width direction Y of the insulating body 110, the opposite sides of the two clamping sub - parts 1232 have a second orthographic projection on the insulating body 110. The second orthographic projection is partially located outside the clamping groove 113. The maximum value D2 of the distance between the part of the second orthographic projection located outside the clamping groove 113 and the side wall of the corresponding clamping groove 113 and the thickness T of the insulating body 110 has a ratio greater than or equal to 0.25 and less than or equal to 1. If this ratio is too large, it means that D2 is larger, that is, the protruding part of the clamping sub - part 1232 is more, which may cause the clamping sub - part 1232 to not be able to be clamped into the clamping groove 113; if this ratio is too small, it means that D2 is smaller, that is, the protruding part of the clamping sub - part 1232 is less, which may cause the clamping sub - part 1232 to disengage from the clamping groove 113 during use.

[0060] Specifically, during the actual manufacturing process, the ratio can be set to 0.25, 0.5, 0.75, or 1, etc. Its specific value can be selected and adjusted according to actual design requirements, as long as the effective clamping between the clamping sub - part 1232 and the clamping groove 113 is ensured, and there is no special limitation here.

[0061] Among them, the outer surface of the clamping sub - part 1232 can be set as an arc surface, and the clamping sub - part 1232 is generally spherical - like, which helps the clamping sub - part 1232 to smoothly pass through the side wall of the clamping groove 113 and be clamped with the clamping groove 113; of course, the clamping sub - part 1232 can also be set to other shapes, as long as the clamping sub - part 1232 can be smoothly clamped with the clamping groove 113, and there is no special limitation here.

[0062] Optionally, the baffle 120 is integrally formed with the insulating body 110. A bending area 130 is formed at the connection between the connecting portion 121 and the insulating body 110. The maximum value of the thickness of the bending area 130 is smaller than the thickness of the connecting portion 121, so that the connecting portion 121 is rotatably connected to the insulating body 110. That is to say, the baffle 120 and the insulating body 110 are an integral structure, and the bending area 130 is the thinning area between the baffle 120 and the insulating body 110. By setting the maximum value of the thickness of the bending area 130 to be smaller than the thickness of the connecting portion 121, the baffle 120 can be rotationally bent relative to the insulating body 110 through the bending area 130, so as to realize the isolation of the tab 510 of the battery cell 500 from the housing 200 of the battery 10.

[0063] Wherein, in addition to the thinning treatment method that can be adopted for the bending area 130, a plurality of through holes can also be provided at intervals in the bending area 130 to improve the bendability of the bending area 130. Its specific setting method can be selected and adjusted according to actual design requirements, as long as it is ensured that the baffle 120 can be bent relative to the insulating body 110 through the bending area 130, and no special restrictions are made here.

[0064] In some embodiments, as Figure 3 shown, reinforcing ribs 140 are provided on the baffle body 122. The reinforcing ribs 140 extend along the length direction X of the insulating body 110, that is, strip-shaped reinforcing ribs 140 are convexly provided on the baffle body 122. Since the material of the baffle 120 itself is relatively soft and is prone to deformation during use, by providing the reinforcing ribs 140 on the baffle 120, the baffle 120 can be effectively prevented from bending during use and affecting the insertion of the insulating structure 100 into the housing.

[0065] In other embodiments, as Figure 6 shown, mounting holes 114 are provided in the insulating body 110. The mounting holes 114 penetrate the insulating body 110 along the thickness direction Z of the insulating body 110. The mounting holes 114 are used for mounting the pole posts 400 of the battery 10; at least two grooves 115 are provided on one side of the insulating body 110 along the width direction Y. The grooves 115 extend along the width direction Y of the insulating body 110. In the length direction X of the insulating body 110, the grooves 115 are distributed on opposite sides of the mounting hole 114. That is, the grooves 115 distributed on opposite sides of the mounting hole 114 constitute a shockproof structure. During the use of the battery 10, when the pole post 400 is subjected to pressure, this shockproof structure can play a buffering role, so as to protect the tab 510 of the battery cell 500 from being damaged, and further ensure the use performance of the battery 10.

[0066] Secondly, an embodiment of the present application provides a battery, which includes an insulating structure. For the specific structure of the insulating structure, refer to the above embodiments. Since this battery adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here.

[0067] As Figure 7 shown, the battery 10 includes a housing 200, a cover plate 300, an insulating structure 100, a terminal post 400, and an electric core 500. The housing 200 forms a receiving cavity 210. The cover plate 300 is connected to the housing 200, and a through hole 310 communicating with the receiving cavity 210 is formed on the cover plate 300. The insulating structure 100 is located on the side of the cover plate 300 facing the receiving cavity 210. The insulating structure 100 is connected to the cover plate 300. The baffle 120 in the insulating structure 100 is bent toward the receiving cavity 210 relative to the insulating body 110. The terminal post 400 is connected to the cover plate 300, and the terminal post 400 sequentially passes through the through hole 310 and the mounting hole 114 on the insulating body 110. The electric core 500 is located in the receiving cavity 210, and the tab 510 of the electric core 500 is electrically connected to the terminal post 400. The tab 510 of the electric core 500 is located on the side of the baffle 120 away from the housing 200.

[0068] That is, when assembling the battery 10, the terminal post 400 is passed through the cover plate 300 and the insulating body 110. After the tab 510 of the electric core 500 is welded to the terminal post 400, the tab 510 of the electric core 500 will be bent. At this time, the baffle 120 is bent relative to the insulating body 110 toward the direction close to the electric core 500, so that the baffle 120 is in the buckling position, and the baffle 120 is isolated between the tab 510 of the electric core 500 and the housing 200 of the battery 10, which can effectively prevent the tab 510 from short-circuiting due to direct contact with the housing 200 of the battery 10 in the bent state, thus ensuring the normal use of the battery 10.

[0069] Among them, when the baffle 120 is bent relative to the insulating body 110 toward the direction close to the electric core 500, the baffle 120 will squeeze the tab 510, so that the whole tab 510 is in a dispersed state under the extrusion of the baffle 120, that is, the adjacent two tabs 510 are not in a tightly attached state, so as to avoid the tab 510 from having a high temperature due to overcurrent. At the same time, the tab 510 will bulge toward the baffle 120 under the extrusion of the baffle 120 to form a bulge 511. Since the whole tab 510 is in a dispersed state, the formation of the bulge 511 helps to increase the heat dissipation area of the tab 510, thus helping to improve the overall heat dissipation effect of the tab 510, further avoiding the temperature being too high due to overcurrent, and then improving the use performance of the battery 10.

[0070] Specifically, as Figures 1 to 3As shown in the figure, the insulation structure 100 includes an insulation body 110 and a baffle 120. The insulation body 110 is used to isolate the cover plate 300 and the battery cell 500 in the battery 10. The insulation body 110 includes opposite first and second surfaces 111 and 112. The first surface 111 is used to connect with the cover plate 300, and the second surface 112 is used to face the battery cell 500. The baffle 120 is disposed on at least one side of the insulation body 110 along the width direction Y. The baffle 120 is rotatably connected to the insulation body 110, and the rotation axis a of the baffle 120 extends along the length direction X of the insulation body 110. Among them, the baffle 120 includes a baffle main body 122 and a connecting portion 121 that are connected to each other. The baffle main body 122 extends along the length direction X of the insulation body 110 to isolate the tab 510 of the battery cell 500 from the outer shell 200 of the battery 10. The connecting portion 121 is rotatably connected to the insulation body 110, and the baffle main body 122 is separated from the insulation body 110.

[0071] In this application, by disposing the baffle 120 on at least one side of the insulation body 110 along the width direction Y, and using the rotatable connection between the baffle 120 and the insulation body 110 to isolate the tab 510 of the battery cell 500 from the outer shell 200 of the battery 10, the risk of short circuit caused by the contact between the tab 510 of the battery cell 500 and the outer shell 200 of the battery 10 in the bent state can be reduced. At the same time, in this application, by separating the baffle main body 122 of the baffle 120 from the insulation body 110 and only connecting the connecting portion 121 to the insulation body 110, the stress generated after the baffle 120 is bent relative to the insulation body 110 and the stress generated when the tab 510 of the battery cell 500 presses the baffle 120 in the bent state can be reduced, which helps to ensure the structural stability of the insulation structure 100 during use, and further ensures the performance of the battery 10.

[0072] The embodiments of the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An insulation structure, characterized in that: include: An insulating body, used to isolate the cover plate and the battery cell in the battery; the insulating body comprises a first surface and a second surface opposite to each other, the first surface is used to connect with the cover plate, and the second surface is used to face the battery cell; A baffle, disposed on at least one side of the insulating body along the width direction, the baffle being rotatably connected to the insulating body, and a rotation axis of the baffle extending along the length direction of the insulating body; Among them, the baffle includes a baffle body and a connecting part that are connected to each other, the baffle body extends along the length direction of the insulating body to isolate the pole ear of the battery cell from the battery shell, the connecting part is rotatably connected to the insulating body, and the baffle body is separately arranged from the insulating body.

2. The insulation structure according to claim 1, characterized in that: The baffle includes two connecting parts that are arranged opposite to each other along the length direction of the insulating body, and the baffle body is connected between the two connecting parts.

3. The insulation structure according to claim 1, characterized in that: The baffle has an extended position and a locked position. When the baffle rotates from the extended position to the locked position, the baffle rotates relative to the insulating body toward the second surface. When the baffle rotates from the locked position to the extended position, the baffle rotates relative to the insulating body toward the first surface.

4. The insulation structure according to claim 3, characterized in that: When the baffle is rotated to the buckling position, the side of the baffle body facing the cover plate is used to abut against the cover plate.

5. The insulation structure according to claim 3, characterized in that: A snap-fitting portion is protruding from the surface of the baffle, and a snap-fitting groove is provided on a side of the insulating body facing the baffle corresponding to the position of the snap-fitting portion; when the baffle is rotated relative to the insulating body toward the second surface to the engaging position, the snap-fitting portion is used to snap-fit ​​with the snap-fitting groove.

6. The insulation structure according to claim 5, characterized in that: The clamping portion includes a connecting sub-portion connected to the baffle, and two clamping sub-portions connected to the side of the connecting sub-portion away from the baffle, and the two clamping sub-portions are arranged at intervals along the length direction of the insulating body; when the baffle is rotated relative to the insulating body toward the second surface to the locking position, the clamping sub-portion is used to clamp with the clamping groove.

7. The insulation structure according to claim 6, characterized in that: In the width direction of the insulating body, the connecting sub-portion has a first orthographic projection on the insulating body, and the first orthographic projection is located in the clip-on groove on opposite sides of the length direction of the insulating body, and the spacing between the first orthographic projection on opposite sides of the length direction of the insulating body and the side walls of the corresponding clip-on groove is less than or equal to 0.2 mm.

8. The insulation structure according to claim 6, characterized in that: In the width direction of the insulating body, one side of the two snap-fit ​​sub-portions facing away from each other has a second orthographic projection on the insulating body, and the second orthographic projection portion is located outside the snap-fit ​​groove. The ratio of the maximum value of the spacing between the portion of the second orthographic projection located outside the snap-fit ​​groove and the side wall corresponding to the snap-fit ​​groove to the thickness of the insulating body is greater than or equal to 0.25 and less than or equal to 1.

9. The insulation structure according to any one of claims 1 to 8, characterized in that: The baffle is integrally formed with the insulating body, a bending zone is formed at the connection between the connecting portion and the insulating body, and the maximum thickness of the bending zone is smaller than the thickness of the connecting portion, so that the connecting portion is rotatably connected to the insulating body.

10. The insulation structure according to any one of claims 1 to 8, characterized in that: The baffle body is provided with reinforcing ribs, and the reinforcing ribs extend along the length direction of the insulating body.

11. The insulation structure according to any one of claims 1 to 8, characterized in that: The insulating body is provided with a mounting hole, the mounting hole penetrates the insulating body along the thickness direction of the insulating body, and the mounting hole is used to mount the pole of the battery; the insulating body is provided with at least two grooves on one side along the width direction, and the grooves extend along the width direction of the insulating body; along the length direction of the insulating body, the grooves are distributed on opposite sides of the mounting hole.

12. A battery, characterized in that: The battery comprises: A housing is formed with a receiving cavity; A cover plate connected to the housing, wherein the cover plate is provided with a through hole communicating with the accommodating cavity; The insulating structure according to any one of claims 1 to 11, wherein the insulating structure is located on a side of the cover plate facing the accommodating cavity, and the insulating structure is connected to the cover plate; and the baffle in the insulating structure is bent toward the accommodating cavity relative to the insulating body; A pole connected to the cover plate, the pole passing through the through hole and the mounting hole on the insulating body in sequence; A battery cell is located in the accommodating cavity, a pole ear of the battery cell is electrically connected to the pole, and the pole ear of the battery cell is located on a side of the baffle away from the shell.

13. The battery according to claim 12, characterized in that The pole ears are dispersed and protrude toward the baffle to form a protrusion.

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