Battery cover plate and battery

Abstract

The utility model discloses a battery cover plate and a battery. The battery cover plate comprises a cover body, a first conductive piece, a second conductive piece, an insulating piece and a sealing piece, the top of the cover body and the bottom of the cover body are respectively provided with the insulating parts, the first conductive part and the second conductive part respectively penetrate through and fix the insulating parts and the cover body, and sealing parts are respectively arranged between the circumferential direction of the first conductive part and the cover body and between the circumferential direction of the second conductive part and the cover body. According to the utility model, the first conductive piece and the second conductive piece are respectively arranged on the battery cover plate in a sealing manner, and the hole opening position of the battery cover plate does not need to use sealant, so that the battery cover plate meets the sealing requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to a battery cover and a battery. Background Art

[0002] Lithium batteries need to undergo multiple tests and verifications during the research and development phase to discover potential design problems as much as possible. According to the national standard GB38031-2020, the battery pack needs to undergo a thermal diffusion test, which requires detonating a single battery cell to confirm the heat spread results for the entire battery pack. For blade batteries, a common method is to embed a built-in heating film into the middle of the battery cell electrode during the battery cell manufacturing process, and the leads extending from the heating film are led out from the holes in the cover plate, and finally the holes in the cover plate are sealed with glue.

[0003] However, conventional sealants are not resistant to corrosion by electrolytes, and the manufactured target cells are prone to leakage at the above-mentioned openings when left for a long time, causing the target cells to be unable to be used normally. Utility Model Content

[0004] The purpose of the utility model is to solve the above technical problems and provide a battery cover and a battery, so as to avoid using lead holes on the cover. The first conductive member and the second conductive member are respectively sealed on the battery cover, and the opening position of the battery cover does not need to use sealant, and the battery cover meets the sealing requirements. In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A battery cover plate includes a cover body, a first conductive member, a second conductive member, an insulating member, and a sealing member; the insulating members are respectively arranged on the top of the cover body and the bottom of the cover body, the first conductive member and the second conductive member respectively penetrate and fix the insulating member and the cover body, and sealing members are respectively arranged between the circumference of the first conductive member and the circumference of the second conductive member and the cover body.

[0006] Specifically, the insulating member includes an upper insulator and a lower insulator, a positioning groove is provided on the top of the cover body, and the bottom of the upper insulator is snap-fitted with the positioning groove.

[0007] Specifically, a connection hole located in the positioning groove is opened on the cover body, and the first conductive member and the second conductive member pass through the connection hole respectively.

[0008] Specifically, the lower insulator is provided with a lower partition plate for separating the first conductive member and the second conductive member, and lower mounting holes are respectively provided on both sides of the lower partition plate in the lower insulator, and the lower mounting holes are aligned with the connecting holes.

[0009] Specifically, a mounting groove is provided on the top of the upper insulator, an upper partition plate is provided in the mounting groove, upper mounting holes are respectively provided on both sides of the upper partition plate in the mounting groove, and the upper mounting holes are aligned with the connecting holes.

[0010] Specifically, a convex ring located in the circumferential direction of the upper mounting hole is provided on the bottom surface of the upper insulator, the convex ring extends into the connecting hole, and the convex ring abuts against the sealing member.

[0011] Specifically, riveting blocks are respectively arranged on both sides of the upper partition plate in the installation groove, and riveting holes are arranged in the riveting blocks, and the riveting holes are aligned with the upper installation holes.

[0012] Specifically, the first conductive member and the second conductive member penetrate and fix the lower insulator, the cover, the upper insulator and the riveting block respectively.

[0013] Specifically, the first conductive member and the second conductive member are both provided with a conductive part, the sealing member is arranged in the connecting hole and the lower mounting hole, one end of the sealing member abuts against the bottom surface of the upper insulator, the other end of the sealing member abuts against the conductive part, and the end surface of the conductive part abuts against the bottom surface of the lower insulator.

[0014] A battery, comprising the battery cover.

[0015] Compared with the prior art, the battery cover and battery of the utility model have the following beneficial effects:

[0016] The first conductive member and the second conductive member are arranged on the cover body at intervals, and the first conductive member and the second conductive member respectively penetrate and fix the insulating member and the cover body, and the first conductive member and the second conductive member are respectively insulated from the cover body; sealing members are respectively arranged between the circumference of the first conductive member and the circumference of the second conductive member and the cover body, and the first conductive member and the second conductive member are respectively sealed with the cover body, avoiding the traditional method of using lead perforations on the cover plate, and no sealant is needed, so as to achieve a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An exploded schematic diagram of a battery cover provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the structure of a battery cover provided in an embodiment of the present application;

[0019] Figure 3 A schematic top view of a battery cover provided in an embodiment of the present application;

[0020] Figure 4 A schematic front cross-sectional view of a battery cover provided in an embodiment of the present application;

[0021] Figure 5 for Figure 4 A partial enlarged schematic diagram of .

[0022] Reference numerals:

[0023] Cover body 1, positioning groove 11, connecting hole 12;

[0024] A first conductive member 2, a conductive portion 21;

[0025] A second conductive member 3;

[0026] Insulator 4, upper insulator 41, mounting groove 411, upper partition plate 412, convex ring 413, lower insulator 42, lower partition plate 421, upper mounting hole 43, lower mounting hole 44;

[0027] Sealing member 5, first ring body 51, second ring body 52, step portion 53;

[0028] Riveting block 6 and riveting hole 61 . DETAILED DESCRIPTION

[0029] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0030] Embodiment 1

[0031] Figure 1 An exploded schematic diagram of a battery cover provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of a battery cover provided in an embodiment of the present application; Figure 3 A schematic top view of a battery cover provided in an embodiment of the present application.

[0032] like Figure 1-Figure 3 As shown, this embodiment provides a battery cover, including a first conductive member 2, a second conductive member 3, an insulating member 4, and a sealing member 5; the insulating member 4 is respectively provided at the top of the cover body 1 and the bottom of the cover body 1, the first conductive member 2 and the second conductive member 3 respectively penetrate and fix the insulating member 4 and the cover body 1, and the sealing member 5 is respectively provided between the circumference of the first conductive member 2 and the circumference of the second conductive member 3 and the cover body 1, and the first conductive member 2 and the second conductive member 3 are spaced from each other.

[0033] This embodiment provides a battery cover, one end of the first conductive member 2 and the second conductive member 3 can be connected to an external power source, and the other end of the first conductive member 2 and the second conductive member 3 can be connected to a heating element (not shown in the figure), so that the heating element is powered on for heating. The battery cover is welded and assembled with a battery housing (not shown in the figure) as a single target battery and loaded into a battery pack. The heating element is located in the battery housing. The heating element of the single target battery is powered on for heating to realize the thermal diffusion test function of the battery pack. The single target battery is detonated by heating, so as to obtain the thermal diffusion test result of the entire battery pack.

[0034] The heating element provided in this embodiment is a heating film, which is arranged inside the battery housing; the heating element has a positive terminal and a negative terminal, the first conductive element 2 is electrically connected to the positive terminal, and the second conductive element 3 is electrically connected to the negative terminal. Specifically, the first conductive element 2 is fixed to the positive terminal by welding with a wire, and the second conductive element 3 is fixed to the negative terminal by welding with a wire. The first conductive element 2 and the second conductive element 3 are respectively connected to an external power source, and the heating element is electrically connected to the first conductive element 2 and the second conductive element 3, respectively, so as to realize the power supply to heat the heating element.

[0035] In this embodiment, the first conductive member 2 and the second conductive member 3 are arranged on the cover body 1 at intervals, and the first conductive member 2 and the second conductive member 3 respectively penetrate and fix the insulating member 4 and the cover body 1, and the first conductive member 2 and the second conductive member 3 are respectively insulated from the cover body 1; a sealing member 5 is arranged between the circumference of the first conductive member 2 and the circumference of the second conductive member 3 and the cover body 1 respectively, and the first conductive member 2 and the second conductive member 3 are respectively sealed with the cover body 1, avoiding the traditional method of connecting the heating element by perforating the lead wire, and no sealant is needed, so as to achieve a better sealing effect; the first conductive member 2 and the second conductive member 3 are respectively stably assembled with the cover body 1, and the first conductive member 2 and the second conductive member 3 are respectively electrically connected to the heating element, and the power supply is connected to the heating element through the first conductive member 2 and the second conductive member 3, so as to realize the conductive heating function of the heating element, and the cover body 1 can meet the requirements of thermal diffusion test.

[0036] Embodiment 2

[0037] This embodiment optimizes the battery cover on the basis of the above embodiment, and in particular provides a specific implementation method of the cover:

[0038] The cover body 1 can be made of aluminum-manganese alloy. In this embodiment, the cover body is a rectangular plate structure.

[0039] Figure 1 A schematic diagram of an exploded view of a battery cover provided in an embodiment of the present application.

[0040] like Figure 1As shown, a positioning groove 11 is provided on the top of the cover body 1, and the positioning groove 11 is used to position and install the insulating member 4. The insulating member 4 is in contact with the positioning groove 11, which improves the convenience and accuracy of installing the insulating member 4 to the cover body 1. The cover body 1 is provided with connecting holes 12 located on both sides of the positioning groove 11, and the two connecting holes 12 are arranged at intervals. The first conductive member 2 and the second conductive member 3 respectively pass through the corresponding connecting holes 12.

[0041] Embodiment 3

[0042] This embodiment optimizes the battery cover on the basis of the above embodiment, and in particular provides a specific implementation method of an insulating member:

[0043] Figure 1 An exploded schematic diagram of a battery cover provided in an embodiment of the present application; Figure 4 This is a schematic front cross-sectional view of a battery cover provided in an embodiment of the present application.

[0044] like Figure 1 , Figure 4 As shown, insulating parts 4 are respectively provided at the top and the bottom of the cover body 1. The insulating parts 4 include an upper insulator 41 and a lower insulator 42. The insulating parts 4 can be made of plastic material and are used to insulate and block the first conductive part 2 and the cover body 1, and to insulate and block the second conductive part 3 and the cover body 1.

[0045] The bottom of the upper insulator 41 is engaged with the positioning groove 11, and the upper insulator 41 is stably positioned with the positioning groove 11. A mounting groove 411 is provided at the top of the upper insulator 41, an upper partition plate 412 is provided in the mounting groove 411, and upper mounting holes 43 are respectively provided on both sides of the upper partition plate 412 in the mounting groove 411, and the upper mounting holes 43 are aligned with the connection holes 12.

[0046] The bottom surface of the upper insulator 41 is provided with a convex ring 413 located in the circumference of the upper mounting hole 43, the convex ring 413 extends into the connecting hole 12, and the convex ring 413 abuts against the sealing member 5. The convex ring 413 is in the connecting hole 12, and is closely matched with the sealing member 5, effectively improving the sealing effect of the sealing member 5.

[0047] The mounting groove 411 may be a rectangular groove structure, a square groove structure, a circular groove structure, an elliptical groove structure or an irregular groove structure. In this embodiment, the mounting groove 411 is a rectangular groove structure, and an upper partition plate 412 is provided in the middle of the mounting groove 411, and the upper partition plate 412 divides the mounting groove 411 into two symmetrical groove bodies.

[0048] Riveting blocks 6 are respectively arranged on both sides of the upper partition plate 412 in the installation groove 411, and riveting holes 61 are arranged in the riveting blocks 6, which are aligned with the upper installation holes 43. The riveting blocks 6 are positioned in the installation groove 411, and the surfaces of the riveting blocks 6 are flush with the surfaces of the installation groove 411.

[0049] The upper mounting holes 43 are respectively arranged on both sides of the upper partition plate 412 in the mounting groove 411, and the upper mounting holes 43 are aligned with the connection holes 12. Accordingly, the connection holes 12, the upper mounting holes 43 and the rivet holes 61 are arranged on the same axis. The first conductive member 2 and the second conductive member 3 respectively penetrate the corresponding connection holes 12, the upper mounting holes 43 and the rivet holes 61, and the cover body 1, the upper insulator 41 and the rivet block 6 are riveted and fixed together. The upper partition plate 412 effectively isolates the first conductive member 2 and the second conductive member 3, and the first conductive member 2 and the second conductive member 3 can be externally connected to a power source.

[0050] The first conductive member 2 and the second conductive member 3 are electrically connected to the corresponding riveted blocks 6 respectively. Specifically, the two riveted blocks 6 are respectively connected to the positive terminal and the negative terminal of the power supply. The riveted blocks 6 are connected to the power supply to realize normal power supply of the first conductive member 2 and the second conductive member 3. The surface of the riveted blocks 6 has a large contact area, which is convenient for connection and coordination with the power supply.

[0051] The lower insulator 42 is provided with a lower partition plate 421 for separating the first conductive member 2 and the second conductive member 3. The lower insulator 42 is provided with lower mounting holes 44 on both sides of the lower partition plate 421. The lower partition plate 421 effectively separates the first conductive member 2 and the second conductive member 3, so that the first conductive member 2 and the second conductive member 3 are normally powered on by the power supply. The lower mounting hole 44 is aligned with the connecting hole 12, and the lower mounting hole 44 and the connecting hole 12 are arranged on the same axis. The first conductive member 2 and the second conductive member 3 respectively penetrate the corresponding lower mounting hole 44, the connecting hole 12, the upper mounting hole 43 and the rivet hole 61, and rivet the lower insulator 42, the cover body 1, the upper insulator 41 and the rivet block 6 together. The first conductive member 2 and the second conductive member 3 respectively rivet the lower insulator 42, the cover body 1, the upper insulator 41 and the rivet block 6, and the assembly structure is stable.

[0052] Embodiment 4

[0053] This embodiment optimizes the battery cover on the basis of the above embodiment, and in particular provides a specific implementation method of a seal:

[0054] Figure 1 An exploded schematic diagram of a battery cover provided in an embodiment of the present application; Figure 4 A schematic front cross-sectional view of a battery cover provided in an embodiment of the present application; Figure 5 for Figure 4 A partial enlarged schematic diagram of .

[0055] like Figure 1 , Figure 4 , Figure 5As shown, a sealing member 5 is arranged between the circumference of the first conductive member 2 and the circumference of the second conductive member 3 and the corresponding connecting hole 12 respectively; in this embodiment, the sealing member 5 is a sealing ring, and the sealing member 5 is made of rubber material. The sealing member 5 is respectively mounted on the first conductive member 2 and the second conductive member 3, and the first conductive member 2 and the second conductive member 3 respectively form a good sealing effect with the cover body 1 in the connecting hole 12, and also have an insulating effect.

[0056] The first conductive member 2 and the second conductive member 3 are both provided with a conductive portion 21 for supporting the sealing member 5. The sealing member 5 is stably supported on the conductive portion 21, so that the first conductive member 2 and the second conductive member 3 can be assembled together with the sealing member 5. The sealing member 5 is provided in the connecting hole 12 and the lower mounting hole 44, one end of the sealing member 5 abuts against the bottom surface of the upper insulator 41, the other end of the sealing member 5 abuts against the conductive portion 21, and the end surface of the conductive portion 21 abuts against the bottom surface of the lower insulator 42.

[0057] The sealing member 5 includes a first ring body 51 and a second ring body 52 connected to the first ring body 51; the first ring body 51 and the second ring body 52 have the same inner diameter and different outer diameters, the first ring body 51 and the second ring body 52 are coaxially arranged, and the outer diameter of the second ring body 52 is larger than the outer diameter of the first ring body 51. A step portion 53 is formed at the connecting position of the first ring body 51 and the second ring body 52.

[0058] The connecting hole 12 is matched with the outer diameter of the first ring body 51 . When the seal 5 is assembled in place, the end surface of the first ring body 51 abuts against the bottom surface of the upper insulator 41 , and the end surface of the second ring body 52 abuts against the conductive part 21 .

[0059] The lower mounting hole 44 is arranged to avoid the second ring body 52, and the aperture of the lower mounting hole 44 is not less than the outer diameter of the second ring body 52. ​​When the seal 5 is assembled in place, the step portion 53 abuts against the bottom surface of the cover body 1. The first conductive member 2 and the second conductive member 3 are respectively sealed with the cover body 1 through the seal 5, and the sealing structure is stable, thereby preventing the electrolyte from leaking from the connection hole 12.

[0060] The first conductive member 2 and the second conductive member 3 are electrically connected to the heating member, specifically, the conductive portion 21 of the first conductive member 2 and the conductive portion 21 of the second conductive member 3 are electrically connected to the heating member. The conductive portion 21 is located at one end of the first conductive member 2 and the second conductive member 3 facing the battery housing.

[0061] Embodiment 5

[0062] This embodiment provides a battery, including the battery cover in the above embodiment.

[0063] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0066] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0067] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A battery cover, comprising a cover body (1), characterized in that: The invention also comprises a first conductive member (2), a second conductive member (3), an insulating member (4), and a sealing member (5); the insulating member (4) is respectively arranged at the top of the cover body (1) and the bottom of the cover body (1); the first conductive member (2) and the second conductive member (3) respectively penetrate and fix the insulating member (4) and the cover body (1); and a sealing member (5) is respectively arranged between the circumference of the first conductive member (2) and the circumference of the second conductive member (3) and the cover body (1).

2. The battery cover according to claim 1, characterized in that: The insulating member (4) comprises an upper insulator (41) and a lower insulator (42); a positioning groove (11) is provided on the top of the cover body (1); and the bottom of the upper insulator (41) is snap-fitted with the positioning groove (11).

3. The battery cover according to claim 2, characterized in that: The cover body (1) is provided with a connection hole (12) located in the positioning groove (11), and the first conductive member (2) and the second conductive member (3) respectively pass through the connection hole (12).

4. The battery cover according to claim 3, characterized in that: The lower insulator (42) is provided with a lower partition plate (421) for separating the first conductive member (2) and the second conductive member (3); lower mounting holes (44) are respectively provided on both sides of the lower partition plate (421) in the lower insulator (42); and the lower mounting holes (44) are aligned with the connecting hole (12).

5. The battery cover according to claim 3, characterized in that: A mounting groove (411) is provided at the top of the upper insulator (41), an upper partition plate (412) is provided in the mounting groove (411), upper mounting holes (43) are provided in the mounting groove (411) on both sides of the upper partition plate (412), and the upper mounting holes (43) are aligned with the connection holes (12).

6. The battery cover according to claim 5, characterized in that: The bottom surface of the upper insulator (41) is provided with a convex ring (413) located in the circumferential direction of the upper mounting hole (43); the convex ring (413) extends into the connecting hole (12); the convex ring (413) abuts against the sealing member (5).

7. The battery cover according to claim 5, characterized in that: Riveting blocks (6) are respectively arranged on both sides of the upper partition plate (412) in the installation groove (411), and riveting holes (61) are arranged in the riveting blocks (6), and the riveting holes (61) are aligned with the upper installation holes (43).

8. The battery cover according to claim 7, characterized in that: The first conductive member (2) and the second conductive member (3) respectively penetrate and fix the lower insulator (42), the cover (1), the upper insulator (41) and the riveting block (6).

9. The battery cover according to claim 4, characterized in that: The first conductive member (2) and the second conductive member (3) are both provided with a conductive portion (21); the sealing member (5) is provided in the connecting hole (12) and the lower mounting hole (44); one end of the sealing member (5) abuts against the bottom surface of the upper insulator (41); the other end of the sealing member (5) abuts against the conductive portion (21); and the end surface of the conductive portion (21) abuts against the bottom surface of the lower insulator (42).

10. A battery, characterized in that: Comprising a battery cover as described in any one of claims 1-9.

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