Cover plate of battery and battery

Abstract

The utility model discloses a cover plate of a battery and the battery. The cover plate of the battery comprises a cover plate piece, the outer leading-out piece is arranged on one side of the cover plate piece and comprises an insulating piece and a conductive piece, the conductive piece is used for leading out electricity of the battery outwards, and the conductive piece and the insulating piece are integrally formed. Therefore, the conductive part and the insulating part are subjected to integral injection molding, so that the number of split parts of the cover plate can be reduced, the assembly efficiency can be improved, the assembly process of the battery can be reduced, and assembly management and production control can be facilitated.

Description

Technical Field

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

[0002] In the prior art, during the assembly process of the battery, the lugs of the battery cell need to be electrically connected to the poles, and then the poles need to be electrically connected to the cover plate, so as to conduct the current inside the battery, and in order to ensure the insulation performance of the battery, corresponding insulating parts need to be provided. This will result in a large number of separate parts of the battery, resulting in low assembly efficiency of the battery. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a battery cover plate, which has fewer parts and is easier and more efficient to assemble.

[0004] The utility model further provides a battery.

[0005] The cover plate of the battery according to the embodiment of the utility model includes: a cover plate member; an external lead-out member, which is arranged on one side of the cover plate member and includes an insulating member and a conductive member, the conductive member is used to lead the electricity of the battery outward, and the conductive member and the insulating member are integrally formed.

[0006] Therefore, by integrally injection molding the conductive part and the insulating part, the number of separate parts of the cover plate can be reduced, which can not only improve the assembly efficiency and reduce the assembly process of the battery, but also facilitate component management and production control.

[0007] In some embodiments of the present invention, the insulating member is provided with a receiving groove, the receiving groove is used to receive the conductive member, and one side of the receiving groove is open.

[0008] In some embodiments of the present invention, a surface of the insulating member corresponding to the open side of the accommodating groove and a surface of the conductive member corresponding to the open side of the accommodating groove are flush with each other.

[0009] In some embodiments of the present invention, the distance between the conductive member from one side of the first direction to the other side of the first direction is W1, and W1 satisfies the relationship: 0.8mm≤W1≤1.5mm.

[0010] In some embodiments of the present invention, the conductive member includes a main body and a limiting protrusion, and the limiting protrusion is arranged on the circumferential outer side wall of the main body and extends in the length direction of the insulating member.

[0011] In some embodiments of the utility model, the accommodating groove includes a first accommodating groove and a limiting groove, the limiting groove is arranged on the circumferential outer side of the first accommodating groove and is connected to the first accommodating groove, the depth of the limiting groove is less than the depth of the first accommodating groove and both sides of the first direction are closed, the first accommodating groove is used to accommodate the main body, and the limiting groove is used to accommodate the limiting protrusion.

[0012] In some embodiments of the present invention, the main body is provided with a first matching hole, and the first matching hole is used to electrically connect and match with the pole of the battery.

[0013] In some embodiments of the present invention, the distance between the outer peripheral wall of the main body and the inner peripheral wall of the main body corresponding to the first matching hole is W2, and W2 satisfies the relationship: W2≥1mm.

[0014] In some embodiments of the present invention, a dimension of the limiting protrusion in the width direction of the insulating member is W3, and W3 satisfies the relationship: W3 ≥ 0.5 mm.

[0015] In some embodiments of the present invention, the conductive member further includes an external connection portion, the external connection portion is disposed on a side of the limiting protrusion away from the main body portion, and the external connection portion is extended in a width direction of the insulating member.

[0016] In some embodiments of the present invention, the accommodating groove also includes a second accommodating groove, which is arranged on the side of the limiting groove away from the first accommodating groove, the second accommodating groove has the same depth as the first accommodating groove, the second accommodating groove is open on one side corresponding to the open side of the first accommodating groove, and the external connection portion is arranged in the second accommodating groove.

[0017] In some embodiments of the present invention, the external connection part includes a first external connection part and a second external connection part, and the first external connection part and the second external connection part are symmetrically arranged with respect to the main body.

[0018] In some embodiments of the present invention, a first matching hole is provided on the conductive member, and a first avoidance hole is provided on the insulating member, and the first avoidance hole is correspondingly connected to the first matching hole.

[0019] In some embodiments of the present invention, the conductive member further includes an extension portion, the extension portion is arranged at a position of the inner circumferential wall of the insulating member corresponding to the first avoidance hole, the extension portion is provided with a second matching hole, and the second matching hole is correspondingly connected to the first matching hole.

[0020] In some embodiments of the utility model, the cover plate of the battery also includes a pole, a first matching hole is provided on the conductive part, a first avoidance hole is provided on the insulating part, the first avoidance hole is correspondingly connected to the first matching hole, a second avoidance hole is provided on the cover plate part, the second avoidance hole is correspondingly connected to the first avoidance hole, and the pole is sequentially penetrated by the second avoidance hole and the first avoidance hole and is electrically connected to the first matching hole.

[0021] In some embodiments of the utility model, the cover of the battery also includes an inner lead-out piece, which is arranged on the side of the cover member facing away from the outer lead-out piece, the inner lead-out piece includes an insulating bracket, the cover member is arranged on one side of the insulating bracket, and the pole is arranged on the side of the insulating bracket facing the cover member.

[0022] In some embodiments of the utility model, the cover plate of the battery also includes a lead-out plate, which is used to be electrically connected to the pole lug of the battery, and the lead-out plate is arranged on the insulating bracket and is welded and electrically connected to the pole; or the lead-out plate, the insulating bracket and the pole are integrally injection molded, and the lead-out plate is electrically connected to the pole.

[0023] In some embodiments of the present utility model, a positioning protrusion is provided on the insulating bracket, and a positioning groove is provided on the cover plate, and the positioning protrusion is positioned and matched with the positioning groove.

[0024] In some embodiments of the present invention, the cover member is provided with a mounting groove, the external lead-out member is arranged in the mounting groove, one side of the mounting groove is open, and the open side of the mounting groove corresponds to the open side of the accommodating groove.

[0025] In some embodiments of the present invention, the distance between the conductive member and the cover member corresponding to the inner wall of the mounting groove in the first direction in the first direction is W4, and W4 satisfies the relationship: W4≥0.5mm.

[0026] In some embodiments of the present invention, the distance between the conductive member and the inner wall of the cover member corresponding to the second direction of the mounting groove is W5 in the second direction, and W5 satisfies the relationship: W5≥0.5mm, wherein the first direction and the second direction are perpendicular to each other.

[0027] The battery according to the embodiment of the utility model comprises: a battery cell; and the battery cover plate mentioned above, wherein the cover plate is arranged at one end of the battery cell and is electrically connected to the battery cell.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 is an exploded view of a cover plate of a battery according to an embodiment of the utility model;

[0031] Figure 2 is a cross-sectional view of a cover plate of a battery according to an embodiment of the utility model;

[0032] Figure 3 is a schematic diagram of an inner lead-out member according to an embodiment of the utility model;

[0033] Figure 4 is a cross-sectional view of an external lead-out member according to an embodiment of the utility model;

[0034] Figure 5 is a cross-sectional view of the external lead-out member according to another embodiment of the utility model;

[0035] Figure 6 is a cross-sectional view of an external lead-out member according to another embodiment of the utility model;

[0036] Figure 7 It is a cross-sectional view of an external lead-out member according to yet another embodiment of the utility model.

[0037] Reference numerals:

[0038] 100, cover plate;

[0039] 10. Internal lead-out parts; 11. Pole; 12. Insulation bracket;

[0040] 20. Cover plate; 21. Second avoidance hole; 22. Mounting groove;

[0041] 30. external lead-out member; 31. conductive member; 311. main body; 3111. first matching hole; 312. limiting protrusion; 313. external connection; 3131. first external connection; 3132. second external connection; 314. extension; 3141. second matching hole; 32. insulating member; 321. first avoidance hole; 322. limiting groove; 323. second receiving groove; 324. positioning groove; 325. first receiving groove; 326. receiving groove;

[0042] 40. Sealing ring; 50. Lead-out piece. DETAILED DESCRIPTION

[0043] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0044] Reference below Figure 1-Figure 7 A battery cover plate 100 according to an embodiment of the present invention is described, and the battery cover plate 100 can be applied to a battery.

[0045] Combination Figure 1-Figure 7 As shown, the cover plate 100 of the battery according to the utility model may mainly include: a cover plate member 20 and an external lead-out member 30, wherein the external lead-out member 30 is arranged on one side of the cover plate member 20, and the external lead-out member 30 may mainly include an insulating member 32 and a conductive member 31, the conductive member 31 is used to lead the electricity of the battery to the outside, the insulating member 32 is arranged on the outside of the conductive member 31 and is used to protect the conductive member 31, and the conductive member 31 and the insulating member 32 are integrally formed.

[0046] Specifically, during the battery production and assembly process, the cover plate 100 needs to be placed on the shell opening of the battery. By placing the external lead-out member 30 on one side of the cover plate member 20, the cover plate member 20 can be welded and sealed with the shell opening, and the pole 11 can be electrically connected to the external lead-out member 30, so that the electricity of the battery can be led outward, ensuring the normal operation of the cover plate 100 and even the battery.

[0047] Furthermore, the external lead-out member 30 may mainly include an insulating member 32 and a conductive member 31. The conductive member 31 may be connected to the pole 11 to lead the electricity of the battery outward. The insulating member 32 is arranged on the outside of the conductive member 31. The insulating member 32 may protect the conductive member 31 and play an insulating role to prevent the cover member 20 from being charged.

[0048] Furthermore, by integrally injection molding the conductive member 31 and the insulating member 32 , the number of separate components of the cover plate 100 can be reduced, which can not only improve assembly efficiency and reduce battery assembly steps, but also facilitate component management and production control.

[0049] Among them, the insulating part 32 can be at least one of PET (polyethylene terephthalate) insulating parts, PPS (polyphenylene sulfide) insulating parts, PBT (polybutylene terephthalate) insulating parts and PC (polycarbonate) insulating parts, the conductive part 31 can be at least one of a copper conductive part, an aluminum conductive part or a nickel conductive part, and the pole 11 can be at least one of a copper pole, an aluminum pole or a nickel pole, and no specific limitation is made here.

[0050] Therefore, by integrally injection molding the conductive member 31 and the insulating member 32 , the number of separate components of the cover plate 100 can be reduced, which can not only improve assembly efficiency and reduce battery assembly steps, but also facilitate component management and production control.

[0051] Combination Figure 4-Figure 7As shown, the insulating member 32 is provided with a receiving groove 326, and the receiving groove 326 is used to receive the conductive member 31, and one side of the receiving groove 326 is open. Specifically, by providing the receiving groove 326 on the insulating member 32, and making one side of the receiving groove 326 open, it is only necessary to directly set the conductive member 31 in the receiving groove 326, and make the conductive member 31 and the insulating member 32 integrally injection molded, so as to realize the connection between the conductive member 31 and the insulating member 32, and realize the integral molding between the conductive member 31 and the insulating member 32, so that the implementation of the integral molding between the conductive member 31 and the insulating member 32 can be simpler and more convenient.

[0052] Furthermore, combined with Figure 4-Figure 7 As shown, the surface of the insulating member 32 corresponding to the open side of the receiving groove 326 is flush with the surface of the conductive member 31 corresponding to the open side of the receiving groove 326. Specifically, by controlling the depth of the receiving groove 326, after the conductive member 31 is arranged on the insulating member 32, the surface of the insulating member 32 corresponding to the open side of the receiving groove 326 is flush with the surface of the conductive member 31 corresponding to the open side of the receiving groove 326, so that the side of the external lead-out member 30 away from the cover member 20 can be flush, which can not only avoid the existence of sharp structures on the upper surface of the external lead-out member 30, but also ensure the reliable insulation of the conductive member 31 by the insulating member 32, so that the structural design of the external lead-out member 30 can be optimized and the structural reliability of the external lead-out member 30 can be improved.

[0053] Combination Figure 4 As shown, the distance between the conductive member 31 from one side in the first direction to the other side in the first direction is W1, and W1 satisfies the relationship: 0.8 mm≤W1≤1.5 mm.

[0054] Specifically, the direction in which the external lead-out member 30 and the cover member 20 are stacked is defined as the first direction. When the main body 311 is welded and electrically connected to the pole 11, a welding area exists between the main body 311 and the pole 11 in the first direction. By setting the thickness of the main body 311 in the first direction within a reasonable range, it is possible to prevent the insulating member 32 from being burned in the first direction due to insufficient penetration when welding the pole 11 and the main body 311. This can further optimize the structural design of the main body 311, which can not only ensure sufficient penetration between the pole 11 and the main body 311 and ensure the welding strength between the pole 11 and the main body 311, but also avoid burning of the insulating member 32, thereby further improving the structural reliability of the cover 100.

[0055] Combination Figure 4-Figure 7As shown, the conductive member 31 can mainly include a main body 311 and a limiting protrusion 312. The limiting protrusion 312 is arranged on the circumferential outer wall of the main body 311 and extends in the length direction of the insulating member 32. In this way, the limiting protrusion 312 can cooperate with the insulating member 32 to limit the movement of the conductive member 31 relative to the insulating member 32 without affecting the connection between the main body 311 and the pole 11, thereby improving the stability of the conductive member 31 in the insulating member 32 and improving the structural reliability of the external lead-out member 30.

[0056] Furthermore, combined with Figure 4-Figure 7 As shown, the accommodating groove 326 can mainly include a first accommodating groove 325 and a limiting groove 322. One side of the first accommodating groove 325 is open, and the limiting groove 322 is arranged on the circumferential outer side of the first accommodating groove 325 and is connected to the first accommodating groove 325. The depth of the limiting groove 322 is less than the depth of the first accommodating groove 325 and both sides of the first direction are closed. The first accommodating groove 325 is used to accommodate the main body 311, and the limiting groove 322 is used to accommodate the limiting protrusion 312.

[0057] Specifically, the limiting protrusion 312 is arranged on the circumferential outer wall of the main body 311, and the thickness of the limiting protrusion 312 in the first direction is less than the thickness of the main body 311 in the first direction. By opening one side of the first accommodating groove 325, the limiting groove 322 is arranged on the circumferential outer side of the first accommodating groove 325 and is connected to the first accommodating groove 325, the depth of the limiting groove 322 is less than the depth of the first accommodating groove 325 and both sides of the first direction are closed. In this way, the structure of the accommodating groove 326 can match the structure of the conductive member 31, the main body 311 can be set in the first accommodating groove 325, and the limiting protrusion 312 can be set in the limiting groove 322. The limiting protrusion 312 and the limiting groove 322 can cooperate with each other to improve the structural reliability of the external lead-out member 30.

[0058] Combination Figure 4-Figure 6 As shown, the main body 311 is provided with a first matching hole 3111, and the first matching hole 3111 is used to electrically connect and cooperate with the pole 11 of the battery. Specifically, the external lead-out member 30 needs to be electrically connected with the pole 11 to lead out the electricity inside the battery. By providing the first matching hole 3111 on the main body 311, it is only necessary to extend the pole 11 into the first matching hole 3111 and weld the pole 11 with the conductive member 31, so that the pole 11 can be directly electrically connected with the conductive member 31, which can not only make the electrical connection between the pole 11 and the conductive member 31 simpler and more reliable, but also eliminate the need for the provision of a rivet block, which can save the size of the rivet block in the first direction, and can improve the space utilization of the battery.

[0059] Combination Figure 4As shown, the distance between the outer peripheral wall of the main body 311 and the inner peripheral wall of the first matching hole 3111 corresponding to the main body 311 is W2, and W2 satisfies the relationship: W2 ≥ 1mm. Specifically, by setting the distance between the outer peripheral wall of the main body 311 and the inner peripheral wall of the first matching hole 3111 corresponding to the main body 311 within a reasonable range, it is prevented that when the pole 11 and the main body 311 are welded, the thickness of the main body 311 is insufficient, resulting in the burning of the insulating member 32 on the circumferential outside of the main body 311, thereby optimizing the structural design of the main body 311, and further improving the structural reliability of the cover plate 100.

[0060] Among them, the main body 311 can be set to a circular ring shape, so that the structure of the main body 311 can match the cylindrical structure of the pole 11, so that after the pole 11 is inserted into the first matching hole 3111 of the main body 311 and welded and electrically connected thereto, the distance between the pole 11 and the edge of the main body 311 can be the same, so that the structure of the cover plate 100 is more symmetrical, and the structural reliability of the cover plate 100 can be improved. It should be noted that the main body can also be other shapes, which are not specifically limited here.

[0061] Combination Figure 4 As shown, the size of the limiting protrusion 312 in the width direction of the insulating member 32 is W3, and W3 satisfies the relationship: W3 ≥ 0.5 mm. Specifically, the limiting protrusion 312 is circumferentially extended on the outer wall of the main body 311, and protrudes in a direction perpendicular to the first direction relative to the main body 311. Considering that the width of the insulating member 32 is less than the length of the insulating member 32, the space for setting the limiting groove 322 in the width direction of the insulating member 32 is limited. By setting the size of the limiting protrusion in the width direction of the insulating member 32 within a reasonable range, the reliability of the limiting cooperation between the limiting protrusion 312 and the limiting groove 322 can be ensured, and insufficient fixing strength can be prevented, thereby further improving the structural reliability of the external lead-out member 30 and even the cover plate 100.

[0062] In some embodiments of the present invention, Figure 6 As shown, the conductive member 31 may further include an external connection portion 313 , which is disposed on a side of the limiting protrusion 312 away from the main body 311 , and the external connection portion 313 extends in the width direction of the insulating member 32 .

[0063] Specifically, by making the conductive part 31 also include an external connection part 313, the external connection part 313 is arranged on the side of the limiting protrusion 312 away from the main body 311, so that the external connection part 313 can be spaced apart from the main body 311, and by making the external connection part 313 extend in the width direction of the insulating part 32, after the cover plate 100 is applied to the battery, the external connection part 313 can provide a welding electrical connection point for the external component, and it is only necessary to electrically connect the external component to the external connection part 313 without connecting the external component to the main body 311, thereby avoiding secondary welding on the main body 311, improving the structural reliability of the main body 311, and improving the reliability of the electrical connection between the conductive part 31 and the external component.

[0064] Furthermore, combined with Figure 6 As shown, the receiving groove 326 may also include a second receiving groove 323, which is arranged on the side of the limiting groove 322 away from the first receiving groove 325, and the second receiving groove 323 has the same depth as the first receiving groove 325. The second receiving groove 323 is open on one side corresponding to the open side of the first receiving groove 325. In this way, the external connection part 313 can be arranged in the second receiving groove 323, so that the movement of the external connection part 313 relative to the insulating member 32 can be limited, and the stability and reliability of the installation of the external connection part 313 and even the conductive member 31 in the insulating member 32 are ensured. The surface of one side of the external connection part 313 away from the second receiving groove 323 is exposed to the outside, and is flush with the surface of one side of the insulating member 32 facing the second receiving groove 323, which can facilitate the connection between the external connection part 313 and the external component. In addition, a positioning groove 324 can be provided on the insulating member 32, and when the external connection part 313 is electrically connected to the external component by welding, the positioning groove 324 can be used to position the welding jig.

[0065] Among them, the size of the external connection part 313 in the length direction of the insulating part 32 can be set to be greater than 1 mm. This can prevent the insulating part 32 from being burned in the length direction of the insulating part 32 due to the insufficient size of the external connection part 313 when the external component is welded to the external connection part 313. Therefore, the structural design of the external connection part 313 and even the conductive part 31 can be optimized, and the structural reliability of the cover plate 100 can be further improved.

[0066] Combination Figure 6As shown, the external connection part 313 can mainly include a first external connection part 3131 and a second external connection part 3132, and the first external connection part 3131 and the second external connection part 3132 are symmetrically arranged with respect to the main body part 311. Such an arrangement, on the one hand, can increase the area of ​​the external connection part 313, thereby increasing the weldable area between the external connection part 313 and the external component, and making it easier to electrically connect the external connection part 313 with the external component; on the other hand, can make the distribution of the first external connection part 3131 and the second external connection part 3132 more uniform, and make the structure of the conductive member 31 more uniform and symmetrical, thereby further improving the structural reliability of the cover plate 100 and even the battery.

[0067] Combination Figure 6 As shown, the conductive member 31 is provided with a first matching hole 3111 , and the insulating member 32 is provided with a first avoiding hole 321 , and the first avoiding hole 321 is connected to and through the first matching hole 3111 .

[0068] Specifically, the insulating pole is located between the conductive member 31 and the base of the pole 11 to play an insulating role. By setting a first avoidance hole 321 in the insulating member 32, the pole 11 can pass through the insulating member 32 through the first avoidance hole 321, and then extend into the first matching hole 3111, thereby optimizing the structural design of the external lead-out member 30 and facilitating the electrical connection between the pole 11 and the external lead-out member.

[0069] Furthermore, by designing the aperture of the first matching hole 3111, the circumferential outer portion of the pole 11 extending into the first matching hole 3111 is fit with the circumferential inner wall of the first matching hole 3111 corresponding to the conductive member 31. This not only increases the contact area between the pole 11 and the conductive member 31 and ensures the current carrying capacity of the cover plate 100, but also facilitates welding at the contact position between the pole 11 and the conductive member 31, thereby making the electrical connection between the pole 11 and the conductive member 31 simpler and more reliable, and further reducing the size of the cover plate 100 and even the battery.

[0070] In other embodiments of the present invention, Figure 7As shown, the conductive member 31 may further include an extension portion 314, which is arranged at a position of the inner circumferential wall of the insulating member 32 corresponding to the second avoidance hole 21, and the extension portion 314 is provided with a second matching hole 3141, and the second matching hole 3141 is correspondingly connected to the first matching hole 3111, so that the pole 11 can be sequentially extended into the second matching hole 3141 and the first matching hole 3111, and the circumferential outer wall of the pole 11 is welded to the circumferential inner wall of the second matching hole 3141 corresponding to the extension portion 314. On the one hand, the extension portion 314 can cooperate with the insulating member 32, thereby improving the setting stability between the conductive member 31 and the insulating member 32, and improving the structural reliability of the insulating member 32. On the other hand, the extension portion 314 can increase the matching length of the conductive member 31 and the pole 11 in the first direction, thereby increasing the welding penetration, and improving the welding strength and welding reliability between the conductive member 31 and the pole 11.

[0071] Combination Figure 1-Figure 3 As shown, the cover plate 100 of the battery may also include an inner lead-out member 10, which is arranged on the side of the cover plate member 20 away from the outer lead-out member 30, and a pole 11 is arranged on the inner lead-out member 10, a first matching hole 3111 is arranged on the conductive member 31, a first avoidance hole 321 is arranged on the insulating member 32, and the first avoidance hole 321 is connected with the first matching hole 3111 correspondingly, a second avoidance hole 21 is arranged on the cover plate member 20, and the second avoidance hole 21 is connected with the first avoidance hole 321 correspondingly, and the pole 11 is sequentially penetrated by the second avoidance hole 21 and the first avoidance hole 321 and is electrically connected with the first matching hole 3111.

[0072] Specifically, during the battery production and assembly process, the cover plate 100 needs to be placed on the opening of the battery shell. By placing the cover plate member 20 on the outside of the inner lead-out member 10, and the outer lead-out member 30 on the outside of the cover plate member 20, and the inner lead-out member 10 and the outer lead-out member 30 are electrically connected, the overall structure of the cover plate 100 can be formed, the cover plate member 20 can be welded and sealed with the shell opening, and the pole 11 of the inner lead-out member 10 can be electrically connected with the battery tab, so that the current can be sequentially led out through the tab, the inner lead-out member 10 and the outer lead-out member 30, ensuring the normal operation of the cover plate 100. In addition, the cover plate 100 is also provided with a sealing ring 40, which is sleeved on the pole 11 and abuts against the cover plate member 20 and the insulating member 32, so that the sealing of the cover plate 100 can be ensured.

[0073] By setting a first matching hole 3111 on the conductive part 31 and a first avoidance hole 321 on the insulating part 32, the first avoidance hole 321 is connected to the first matching hole 3111 correspondingly, and a second avoidance hole 21 is set on the cover plate 20, and the second avoidance hole 21 is connected to the first avoidance hole 321 correspondingly, so that the pole 11 can pass through the second avoidance hole 21 and the first avoidance hole 321 in sequence, and extend into the first matching hole 3111, and the pole 11 can be electrically connected and matched with the first matching hole 3111, so that the structural design of the cover plate 20 and the external lead-out part 30 can be optimized, and the electrical connection between the pole 11 and the external lead-out part 30 is convenient.

[0074] Combination Figure 3 As shown, the inner lead-out member 10 may further include: an insulating support 12 , a cover member 20 covering the insulating support 12 , and a pole 11 disposed on a side of the insulating support 12 facing the cover member 20 .

[0075] Specifically, the pole 11 also includes a base. By covering the cover plate 20 on the insulating bracket 12, the pole 11 is arranged on the side of the insulating bracket 12 facing the cover plate 20. In this way, the insulating bracket 12 can play an insulating role and prevent the base from contacting the cover plate 20 and causing the cover plate 20 to be charged, thereby further improving the structural reliability of the cover plate 100 and even the battery.

[0076] Furthermore, the pole 11 and the insulating bracket 12 can be integrally injection molded, which not only reduces the number of separate parts of the cover plate 100 and improves the assembly efficiency of the cover plate 100, but also enables the pole ear of the pole core to be welded to the pole 11 and then integrated into the shell, and then the battery shell and cover plate member 20 are selectively welded first and then the inner lead-out member 10 and the outer lead-out member 30 are welded, or the inner lead-out member 10 and the outer lead-out member 30 are welded first and then the battery shell and cover plate member 20 are welded, thereby adjusting the assembly process of the battery, reducing the length required for the pole ear surplus, and improving the structural compactness of the battery.

[0077] Combination Figure 1 As shown, the battery cover 100 may further include a lead-out sheet 50, which is used to be electrically connected to the battery tab. Specifically, one end of the lead-out sheet 50 may be electrically connected to the battery tab, and the other end of the lead-out sheet 50 may be electrically connected to the pole 11, thereby achieving electrical connection between the pole 11 and the tab.

[0078] In some embodiments of the utility model, the lead-out piece 50 is arranged on the insulating bracket 12, and the lead-out piece 50 is welded and electrically connected to the pole 11, which can facilitate the welding between the lead-out piece 50 and the pole ear and the pole 11 respectively, and can facilitate the assembly of the cover plate 100 and even the battery.

[0079] In other embodiments of the present invention, the lead-out piece 50, the insulating bracket 12 and the pole 11 are integrally injection molded, and the lead-out piece 50 is electrically connected to the pole 11, which can further reduce the number of separate parts of the cover plate 100, not only facilitating the component management and production control of the cover plate 100, but also facilitating the assembly of the cover plate 100, reducing the assembly steps of the cover plate 100, and improving the assembly efficiency of the cover plate 100 and even the battery.

[0080] In addition, a positioning protrusion is provided on the insulating bracket 12, and a positioning groove is provided on the cover plate member 20, and the positioning protrusion is positioned and matched with the positioning groove. Specifically, by providing the positioning protrusion on the insulating bracket 12 and the positioning groove on the cover plate member 20, when the cover plate member 20 is covered on the insulating bracket 12, the positioning protrusion and the positioning groove can be positioned and matched accordingly, so that the cover plate member 20 can be located at the correct assembly position relative to the inner lead-out member 10, the position of the inner lead-out member 10 relative to the cover plate member 20 can be fixed, the assembly speed and assembly accuracy between the cover plate member 20 and the inner lead-out member 10 can be improved, and the assembly efficiency of the cover plate 100 can be improved.

[0081] Combination Figure 1 As shown, the cover member 20 is provided with a mounting groove 22 , and the external lead-out member 30 is arranged in the mounting groove 22 . One side of the mounting groove 22 is open, and the open side of the mounting groove 22 corresponds to the open side of the accommodating groove 326 .

[0082] Specifically, by providing a mounting groove 22 on the cover plate member 20 and leaving one side of the mounting groove 22 open, the external lead-out member 30 can be arranged in the mounting groove 22 during assembly, and the external lead-out member 30 can be sunk, thereby not only achieving a stable arrangement between the external lead-out member 30 and the cover plate member 20, but also reducing the size of the cover plate 100 in the first direction, thereby improving the space utilization of the battery.

[0083] Furthermore, the open side of the mounting groove 22 is made to correspond to the open side of the receiving groove 326, so that the insulating member 32 can be located between the cover member 20 and the conductive member 31. The insulating member 32 can play an insulating role, thereby preventing the conductive member 31 from directly contacting the cover member 20, causing the cover member 20 to be short-circuited and charged, thereby ensuring the normal operation of the cover 100 and even the battery.

[0084] Combination Figure 4As shown, the distance between the conductive member 31 and the inner wall of the first direction of the mounting groove 22 corresponding to the cover member 20 in the first direction is W4, and W4 satisfies the relationship: W4 ≥ 0.5 mm. Specifically, by setting the distance between the conductive member 31 and the inner wall of the first direction of the mounting groove 22 corresponding to the cover member 20 in the first direction within a reasonable range, it can be ensured that the thickness of the insulating member 32 between the cover member 20 and the conductive member 31 in the first direction is sufficient, and the short circuit between the cover member 20 and the conductive member 31 can be more reliably and effectively avoided, and the reliability of the cover 100 and even the battery can be improved.

[0085] Furthermore, combined with Figure 4 As shown, the distance between the conductive member 31 and the inner wall of the second direction of the mounting groove 22 corresponding to the cover member 20 in the second direction is W5, and W5 satisfies the relationship: W5 ≥ 0.5 mm, wherein the first direction and the second direction are perpendicular to each other. Specifically, the second direction is defined to be perpendicular to the first direction, and the distance between the conductive member 31 and the inner wall of the second direction of the mounting groove 22 corresponding to the cover member 20 in the second direction is set within a reasonable range, so that the thickness of the insulating member 32 between the cover member 20 and the conductive member 31 in the second direction can be ensured to be sufficient, and the short circuit between the cover member 20 and the conductive member 31 can be more reliably and effectively avoided, and the reliability of the cover 100 and even the battery can be improved.

[0086] The battery according to the embodiment of the utility model may include: a battery cell and the above-mentioned battery cover 100, the cover 100 is arranged at one end of the battery cell and is electrically connected to the battery cell. Specifically, by applying the cover 100 to the battery, when assembling the battery, the pole ear of the battery cell can be first welded to the inner lead-out member 10 and insulated, and then the sealing structure such as the sealing ring 40 can be assembled. After assembly, the pole 11 is inserted into the shell, and then the pole 11 passes through the cover 20 and is electrically connected to the outer lead-out member 30 by welding, and finally the cover 100 is welded and sealed with the shell, thereby improving the assembly efficiency and reducing the necessary sequence of the front and rear steps in the battery production process. Among them, the battery can be a structure with cover plates 100 on both sides, or a structure with cover plates 100 on one side.

[0087] In the description of the present invention, 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", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 invention 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 invention.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0089] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery cover, characterized in that: include: A cover plate member (20); An external lead-out member (30), the external lead-out member (30) being arranged on one side of the cover member (20) and comprising an insulating member (32) and a conductive member (31), the conductive member (31) being used to lead electricity of the battery outwardly, the conductive member (31) and the insulating member (32) being integrally formed.

2. The battery cover (100) according to claim 1, characterized in that: The insulating member (32) is provided with a receiving groove (326), the receiving groove (326) is used to receive the conductive member (31), and one side of the receiving groove (326) is open.

3. The battery cover according to claim 2, characterized in that: The surface of the insulating member (32) corresponding to the open side of the accommodating groove (326) and the surface of the conductive member (31) corresponding to the open side of the accommodating groove (326) are flush with each other.

4. The battery cover according to claim 1, characterized in that: The distance between the conductive member (31) from one side in the first direction to the other side in the first direction is W1, and W1 satisfies the relationship: 0.8 mm ≤ W1 ≤ 1.5 mm.

5. The battery cover according to claim 2, characterized in that: The conductive member (31) comprises a main body (311) and a limiting protrusion (312); the limiting protrusion (312) is arranged on the circumferential outer side wall of the main body (311) and extends in the length direction of the insulating member (32).

6. The battery cover (100) according to claim 5, characterized in that: The accommodating groove (326) comprises a first accommodating groove (325) and a limiting groove (322); the limiting groove (322) is arranged on the circumferential outer side of the first accommodating groove (325) and is connected to the first accommodating groove (325); the depth of the limiting groove (322) is less than the depth of the first accommodating groove (325) and both sides of the first direction are closed; the first accommodating groove (325) is used to accommodate the main body (311), and the limiting groove (322) is used to accommodate the limiting protrusion (312).

7. The battery cover according to claim 5, characterized in that: The main body (311) is provided with a first matching hole (3111), and the first matching hole (3111) is used for electrically connecting and matching with the pole (11) of the battery.

8. The battery cover according to claim 7, characterized in that: The distance between the outer peripheral wall of the main body (311) and the inner peripheral wall of the main body (311) corresponding to the first matching hole (3111) is W2, and W2 satisfies the relationship: W2≥1mm.

9. The battery cover according to claim 5, characterized in that: The dimension of the limiting protrusion (312) in the width direction of the insulating member (32) is W3, and W3 satisfies the relationship: W3≥0.5 mm.

10. The battery cover according to claim 6, characterized in that: The conductive member further comprises an external connection portion (313), wherein the external connection portion (313) is arranged on a side of the limiting protrusion (312) away from the main body (311), and the external connection portion (313) is extended in the width direction of the insulating member (32).

11. The battery cover according to claim 10, characterized in that: The accommodating groove (326) further comprises a second accommodating groove (323), wherein the second accommodating groove (323) is arranged on a side of the limiting groove (322) away from the first accommodating groove (325), the second accommodating groove (323) has the same depth as the first accommodating groove (325), the second accommodating groove (323) is openly arranged on a side corresponding to the open side of the first accommodating groove (325), and the external connecting portion (313) is arranged in the second accommodating groove (323).

12. The battery cover according to claim 10, characterized in that: The external connection part (313) includes a first external connection part (3131) and a second external connection part (3132), and the first external connection part (3131) and the second external connection part (3132) are symmetrically arranged with respect to the main body part (311).

13. The battery cover according to claim 1, characterized in that: The conductive member (31) is provided with a first matching hole (3111), and the insulating member (32) is provided with a first avoidance hole (321), and the first avoidance hole (321) is connected to and communicates with the first matching hole (3111).

14. The battery cover according to claim 13, characterized in that: The conductive member (31) further comprises an extension portion (314), wherein the extension portion (314) is arranged at a position of the inner peripheral wall of the insulating member (32) corresponding to the first avoidance hole (321), and the extension portion (314) is provided with a second matching hole (3141), and the second matching hole (3141) is correspondingly connected to the first matching hole (3111).

15. The battery cover according to claim 1, characterized in that: The battery cover (100) further comprises a pole (11); the conductive member (31) is provided with a first matching hole (3111); the insulating member (32) is provided with a first avoidance hole (321); the first avoidance hole (321) is correspondingly connected to the first matching hole (3111); the cover member (20) is provided with a second avoidance hole (21); the second avoidance hole (21) is correspondingly connected to the first avoidance hole (321); the pole (11) is sequentially penetrated by the second avoidance hole (21) and the first avoidance hole (321) and is electrically connected to the first matching hole (3111).

16. The battery cover according to claim 15, characterized in that: The battery cover (100) further comprises an inner lead-out member (10), the inner lead-out member (10) being arranged on a side of the cover member (20) facing away from the outer lead-out member (30), the inner lead-out member (10) comprising an insulating support (12), the cover member (20) being arranged on a side of the insulating support (12), and the pole (11) being arranged on a side of the insulating support (12) facing the cover member (20).

17. The battery cover according to claim 16, characterized in that: The battery cover plate (100) further comprises a lead-out piece (50), the lead-out piece (50) being used to be electrically connected to a pole lug of the battery, the lead-out piece (50) being arranged on the insulating support (12) and being electrically connected to the pole (11) by welding; or The lead-out piece (50), the insulating support (12) and the pole (11) are integrally injection-molded, and the lead-out piece (50) is electrically connected to the pole (11).

18. The cover plate of the battery according to claim 16, characterized in that: The insulating bracket (12) is provided with a positioning protrusion, and the cover plate (20) is provided with a positioning groove, and the positioning protrusion is positioned and matched with the positioning groove.

19. The battery cover according to claim 2, characterized in that: The cover plate member (20) is provided with a mounting groove (22), the external lead-out member (30) is arranged in the mounting groove (22), one side of the mounting groove (22) is open, and the open side of the mounting groove (22) corresponds to the open side of the accommodating groove (326).

20. The battery cover according to claim 19, characterized in that: The distance between the conductive member (31) and the inner wall of the mounting groove (22) corresponding to the cover member (20) in the first direction is W4, and W4 satisfies the relationship: W4≥0.5mm.

21. The cover plate of the battery according to claim 19, characterized in that: The distance between the conductive member (31) and the inner wall of the cover member (20) corresponding to the second direction of the mounting groove (22) in the second direction is W5, and W5 satisfies the relationship: W5≥0.5mm, wherein the first direction and the second direction are perpendicular to each other.

22. A battery, characterized in that: include: Battery cells; The cover plate (100) of the battery according to any one of claims 1 to 21, wherein the cover plate (100) is arranged at one end of the battery cell and is electrically connected to the battery cell.

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