Battery cover plate, battery and battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a battery cover plate, a battery and a battery pack, and the battery cover plate comprises a cover plate body which is provided with two first through holes at intervals; the upper insulating part is arranged on the first side face of the cover plate body, and two second through holes are formed in the upper insulating part at intervals; the lower insulating part is arranged on the second side surface of the cover plate body, and two third through holes are formed in the lower insulating part at intervals; and the adhesive tape ring simultaneously penetrates through the first through hole, the second through holes and the third through holes which are communicated with one another, and is adhered between the two second through holes of the upper insulating part and between the two third through holes of the lower insulating part. According to the utility model, the first through hole, the second through hole and the third through hole which are communicated are used as the tab through holes, and the tabs of the pole group in the shell are led out of the shell through the tab through holes and then are electrically connected with the connecting sheets and / or the pole columns, so that the connection mode of the pole columns and the tabs does not occupy the internal space of the shell, and the reliability of the shell is improved. Therefore, the utilization rate of the internal space of the shell can be improved.

Description

Technical Field

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

[0002] A battery primarily consists of an external structure and an internal structure. The external structure typically includes a cover plate and a housing, which are welded together to form a housing. The internal structure typically includes a pole group, which is disposed within the housing. In the prior art, poles are disposed on the cover plate and typically inserted into the housing. Within the housing, the pole tabs of the pole group are electrically connected to the poles on the cover plate via connecting tabs. However, this connection between the poles and tabs results in excessive occupancy of the housing's internal space, resulting in low internal space utilization. Utility Model Content

[0003] In view of this, the present invention provides a battery cover, a battery and a battery pack to solve the problem of low utilization of the internal space of the shell in the prior art.

[0004] In the first aspect, the utility model provides a battery cover, comprising: a cover body, with two first perforations spaced apart; an upper insulating member, arranged on the first side surface of the cover body, the upper insulating member having two second perforations spaced apart, the two second perforations being connected to the two first perforations respectively; a lower insulating member, arranged on the second side surface of the cover body, the lower insulating member having two third perforations spaced apart, the two third perforations being connected to the two first perforations respectively; a tape ring, simultaneously passing through the first, second and third perforations that are connected, and being pasted between the two second perforations of the upper insulating member and between the two third perforations of the lower insulating member.

[0005] Beneficial effect: The upper insulating member, the cover plate body and the lower insulating member are wound and pasted together by using a tape ring and the first perforation, the second perforation and the third perforation that are connected. In addition, the first perforation, the second perforation and the third perforation that are connected are used as the tab perforations. The tabs of the pole group in the shell are led out to the outside of the shell through the tab perforations and are then electrically connected to the connecting piece and / or the pole. Therefore, the connection method between the pole and the tab will not occupy the internal space of the shell, thereby improving the utilization rate of the internal space of the shell.

[0006] In an optional embodiment, the tape ring includes two first segments and two second segments, the two first segments are relatively spaced apart, the two second segments are relatively spaced apart, the first segments and the second segments are connected in sequence along the circumferential direction, each first segment is located in the first through-hole, the second through-hole and the third through-hole that are connected, one of the second segments is pasted between the two second through-holes of the upper insulating member, and the other second segment is pasted between the two third through-holes of the lower insulating member.

[0007] In an optional embodiment, a tape groove is provided on a side of the upper insulating member facing away from the cover body, and the second segment is arranged in the tape groove.

[0008] Beneficial effect: By providing a tape groove to accommodate the tape ring, the tape ring is prevented from protruding from the side of the upper insulating member facing away from the cover body, thereby avoiding affecting the arrangement of other components on the battery cover.

[0009] In an optional embodiment, a convex bulge is formed on a side of the lower insulating member facing the cover body around the outer periphery of the third through-hole, and the convex bulge is inserted into the first through-hole and abuts against a side of the upper insulating member facing the cover body; or,

[0010] A convex bump is formed on a side of the upper insulating member facing the cover body around the outer periphery of the second through hole, the convex bump is inserted into the first through hole and abuts against a side of the lower insulating member facing the cover body; or,

[0011] A bulge is formed on one side of the lower insulating member facing the cover body around the outer periphery of the third through-hole, and a bulge is formed on one side of the upper insulating member facing the cover body around the outer periphery of the second through-hole. The bulge of the lower insulating member and the bulge of the upper insulating member are both inserted into the first through-hole and abut against each other.

[0012] Beneficial effect: The convex bump formed by the lower insulating member and / or the upper insulating member is inserted into the first through-hole, thereby ensuring the insulation of the cover plate body at the first through-hole.

[0013] In an optional embodiment, a receiving groove is formed on the first side surface of the cover body, the upper insulating member is arranged corresponding to the receiving groove, and a side of the upper insulating member facing the cover body abuts against the bottom wall of the receiving groove.

[0014] Beneficial effect: By providing the accommodating groove, the installation and positioning of the upper insulating member are facilitated, and the upper insulating member is prevented from protruding too much from the cover body, thereby affecting the overall space utilization of the battery.

[0015] In an optional embodiment, the tape loop has a width of 5 mm to 30 mm.

[0016] Beneficial effect: while ensuring the bonding strength of the tape ring and the connection strength to the cover plate body, the upper insulating member and the lower insulating member, the tape ring is ensured to cooperate smoothly with the first perforation, the second perforation and the third perforation.

[0017] In an optional embodiment, the tape loop is provided in one loop or is stacked with several loops.

[0018] Beneficial effect: ensuring the connection strength of the tape ring to the cover body, the upper insulating member and the lower insulating member.

[0019] In an optional embodiment, the first perforation, the second perforation and the third perforation are extended in the same direction to form a strip-shaped hole body, and the tape ring is provided with one ring or several rings are sequentially provided along the extension direction of the strip-shaped hole body.

[0020] Beneficial effect: ensuring the connection strength of the tape ring to the cover body, the upper insulating member and the lower insulating member.

[0021] In a second aspect, the present invention further provides a battery, comprising the above-mentioned battery cover.

[0022] In a third aspect, the present invention further provides a battery pack comprising the above-mentioned battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of a battery cover according to an embodiment of the present invention at one angle;

[0025] Figure 2 for Figure 1 A schematic structural diagram of the battery cover shown in another angle;

[0026] Figure 3 for Figure 1 The exploded structural diagram of the battery cover shown;

[0027] Figure 4 for Figure 2 The exploded structural diagram of the battery cover shown;

[0028] Figure 5 for Figure 1 A top view of the battery cover shown;

[0029] Figure 6 for Figure 5 Partial cross-sectional view along the AA direction;

[0030] Figure 7 for Figure 6 The schematic diagram of the structure of the battery cover shown is when no tape groove is provided.

[0031] Description of reference numerals:

[0032] 1. Cover plate body; 11. First perforation; 12. Accommodation groove; 2. Upper insulating member; 21. Second perforation; 22. Tape groove; 3. Lower insulating member; 31. Third perforation; 4. Tape ring; 41. First segment; 42. Second segment; 5. Bump. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0034] The following combination Figures 1 to 7 , describing the embodiments of the present utility model.

[0035] According to an embodiment of the present utility model, on the one hand, a battery cover is provided, including: a cover body 1, having two first through-holes 11 spaced apart; an upper insulating member 2, arranged on a first side surface of the cover body 1, the upper insulating member 2 having two second through-holes 21 spaced apart, the two second through-holes 21 being connected to the two first through-holes 11 respectively; a lower insulating member 3, arranged on a second side surface of the cover body 1, the lower insulating member 3 having two third through-holes 31 spaced apart, the two third through-holes 31 being connected to the two first through-holes 11 respectively; a tape ring 4, simultaneously passing through the first through-hole 11, the second through-hole 21 and the third through-hole 31 connected thereto, and being pasted between the two second through-holes 21 of the upper insulating member 2 and between the two third through-holes 31 of the lower insulating member 3.

[0036] The battery cover of this embodiment uses a tape ring 4 and a first through-hole 11, a second through-hole 21 and a third through-hole 31 to wrap and stick the upper insulating member 2, the cover body 1 and the lower insulating member 3 together. In addition, the first through-hole 11, the second through-hole 21 and the third through-hole 31 are used as tab through-holes. The tabs of the pole group in the shell are led out to the outside of the shell through the tab through-holes and are then electrically connected to the connecting piece and / or the pole post. Therefore, the connection method between the pole post and the tab will not occupy the internal space of the shell, thereby improving the utilization rate of the internal space of the shell.

[0037] It is worth noting that the head end of the tape strip is passed through a first through-hole 11, a second through-hole 21 and a third through-hole 31 that are connected, and is pasted on the upper insulating member 2 or the lower insulating member 3, and then the tail end of the tape strip is passed through another first through-hole 11, another second through-hole 21 and another third through-hole 31 that are connected, and the tail end of the tape strip is connected (spliced ​​or overlapped) to the head end of the tape strip, so that the tape strip forms a tape loop 4.

[0038] Please note that Figure 3 The first side of the cover body 1 is the upper side of the cover body 1, and the second side of the cover body 1 is the lower side of the cover body 1. Therefore, it can be understood that the upper insulating member 2 is located above the cover body 1, and the lower insulating member 3 is located below the cover body 1.

[0039] Specifically, in one embodiment, Figure 3 and Figure 4 As shown, the tape ring 4 includes two first segments 41 and two second segments 42. The two first segments 41 are relatively spaced apart, and the two second segments 42 are relatively spaced apart. The first segments 41 and the second segments 42 are sequentially connected along the circumferential direction. Each first segment 41 is located in the first through-hole 11, the second through-hole 21 and the third through-hole 31 that are connected. One of the second segments 42 is pasted between the two second through-holes 21 of the upper insulating member 2, and the other second segment 42 is pasted between the two third through-holes 31 of the lower insulating member 3.

[0040] In one embodiment, Figures 1 to 6 As shown, a tape groove 22 is defined on the side of the upper insulating member 2 facing away from the cover body 1, and the second segment 42 is disposed within the tape groove 22. Providing the tape groove 22 to accommodate the tape ring 4 prevents the tape ring 4 from protruding beyond the side of the upper insulating member 2 facing away from the cover body 1, thereby preventing it from affecting the arrangement of other components on the battery cover.

[0041] Of course, in other alternative embodiments, such as Figure 7 As shown, the side of the upper insulating member 2 facing away from the cover body 1 may not have the tape groove 22 .

[0042] In one embodiment, Figure 3 As shown, a convex bump 5 is formed around the outer periphery of the third through hole 31 on the side of the lower insulating member 3 facing the cover body 1 . The convex bump 5 is inserted into the first through hole 11 and abuts against the side of the upper insulating member 2 facing the cover body 1 .

[0043] Of course, in other alternative embodiments, a bulge 5 may be formed on the side of the upper insulating member 2 facing the cover body 1 around the outer periphery of the second through-hole 21, the bulge 5 may be inserted into the first through-hole 11, and abut against the side of the lower insulating member 3 facing the cover body 1; or, a bulge 5 may be formed on the side of the lower insulating member 3 facing the cover body 1 around the outer periphery of the third through-hole 31 and on the side of the upper insulating member 2 facing the cover body 1 around the outer periphery of the second through-hole 21, and the bulge 5 of the lower insulating member 3 and the bulge 5 of the upper insulating member 2 may be inserted into the first through-hole 11 and abut against each other.

[0044] Therefore, the convex bulge 5 formed by the lower insulating member 3 and / or the upper insulating member 2 is inserted into the first through-hole 11 to ensure the insulation of the cover body 1 at the first through-hole 11. It can be understood that the tab is inserted into the space enclosed by the convex bulge 5, so insulation is formed between the tab and the cover body 1 through the convex bulge 5.

[0045] In one embodiment, Figure 1 and Figure 3 As shown, a receiving groove 12 is provided on the first side surface of the cover body 1, and the upper insulating member 2 is provided corresponding to the receiving groove 12. The side of the upper insulating member 2 facing the cover body 1 abuts against the bottom wall of the receiving groove 12. By providing the receiving groove 12, the installation and positioning of the upper insulating member 2 are facilitated, and the upper insulating member 2 is prevented from protruding too much from the cover body 1 and affecting the overall space utilization of the battery. In other words, if the upper insulating member 2 protrudes too much from the cover body 1, the overall volume of the battery will increase, and the overall space utilization of the battery will decrease. Of course, the provision of the receiving groove 12 on the cover body 1 must also take into account the impact on the structural strength of the cover body 1.

[0046] In one embodiment, the width of the tape ring 4 is 5 mm to 30 mm. While ensuring the adhesive strength of the tape ring 4 and the connection strength to the cover body 1, the upper insulating member 2, and the lower insulating member 3, the tape ring 4 is ensured to smoothly fit with the first through-hole 11, the second through-hole 21, and the third through-hole 31.

[0047] It is worth noting that if the bandwidth of the tape ring 4 is too small, the bonding strength between the tape ring 4 and the upper insulating member 2 and the lower insulating member 3 is too low, and the structural strength of the tape ring 4 itself is also too low, and the upper insulating member 2, the cover body 1 and the lower insulating member 3 will not be firmly connected; if the bandwidth of the tape ring 4 is too large, it is not convenient to pass the tape ring 4 through the first through-hole 11, the second through-hole 21 and the third through-hole 31, and it may even interfere with the upper insulating member 2, the cover body 1 and the lower insulating member 3.

[0048] In one embodiment, the adhesive tape ring 4 is provided with one ring or a plurality of rings are stacked to ensure the connection strength of the adhesive tape ring 4 to the cover body 1, the upper insulating member 2 and the lower insulating member 3.

[0049] In one embodiment, the first through-hole 11, the second through-hole 21, and the third through-hole 31 extend in the same direction to form a strip-shaped hole, and the tape loop 4 is provided with one loop or multiple loops sequentially provided along the extending direction of the strip-shaped hole. This arrangement ensures the connection strength of the tape loop 4 to the cover body 1, the upper insulating member 2, and the lower insulating member 3.

[0050] It is worth noting that, please refer to Figures 1 to 5 The extension direction of the strip-shaped hole body (the first perforation 11, the second perforation 21 and the third perforation 31) is the length direction of the battery cover. Furthermore, when the tape ring 4 is provided with several circles, the several circles of tape ring 4 can be arranged in sequence along the length direction of the battery cover, and the adjacent tape rings 4 can be spliced, overlapped, or spaced apart.

[0051] According to an embodiment of the present invention, on the other hand, a battery is provided, comprising the above-mentioned battery cover.

[0052] In one embodiment, the battery further comprises a housing, the interior of the housing being hollow, at least one end of the housing having an opening, a battery cover being connected to the housing and sealing the opening, and the battery cover and the housing together forming a housing space. Furthermore, the battery further comprises a pole group, which is disposed corresponding to the housing space and includes a tab. The tab extends through a tab perforation formed within the housing space by connecting the first perforation 11, the second perforation 21, and the third perforation 31, and can then be electrically connected to a connecting piece and / or a pole post.

[0053] According to an embodiment of the present invention, in another aspect, a battery pack is provided, comprising the above-mentioned battery.

[0054] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A battery cover, characterized in that: include: The cover body is provided with two first through holes at intervals; An upper insulating member is provided on the first side surface of the cover body, and the upper insulating member is provided with two second through-holes spaced apart from each other, and the two second through-holes are respectively connected to the two first through-holes; A lower insulating member is provided on the second side surface of the cover body, and the lower insulating member is provided with two third through-holes spaced apart from each other, and the two third through-holes are respectively connected to the two first through-holes; The tape ring passes through the first through-hole, the second through-hole and the third through-hole that are connected to each other, and is adhered between the two second through-holes of the upper insulating member and between the two third through-holes of the lower insulating member.

2. The battery cover according to claim 1, characterized in that: The tape ring includes two first segments and two second segments, the two first segments are arranged at relative intervals, the two second segments are arranged at relative intervals, the first segment and the second segment are connected in sequence along the circumferential direction, each first segment is located in the first through-hole, the second through-hole and the third through-hole that are connected, one of the second segments is pasted between the two second through-holes of the upper insulating member, and the other second segment is pasted between the two third through-holes of the lower insulating member.

3. The battery cover according to claim 2, characterized in that: A tape groove is formed on a side of the upper insulating member facing away from the cover body, and the second segment is arranged in the tape groove.

4. The battery cover according to any one of claims 1 to 3, characterized in that: A convex bulge is formed on a side of the lower insulating member facing the cover body around the outer periphery of the third through-hole, the convex bulge is inserted into the first through-hole, and abuts against a side of the upper insulating member facing the cover body; Or, A convex bulge is formed on a side of the upper insulating member facing the cover body around the outer periphery of the second through-hole, the convex bulge is inserted into the first through-hole and abuts against a side of the lower insulating member facing the cover body; Or, A bulge is formed on one side of the lower insulating member facing the cover body around the outer periphery of the third through-hole, and a bulge is formed on one side of the upper insulating member facing the cover body around the outer periphery of the second through-hole. The bulge of the lower insulating member and the bulge of the upper insulating member are both inserted into the first through-hole and abut against each other.

5. The battery cover according to any one of claims 1 to 3, characterized in that: A receiving groove is formed on the first side surface of the cover body, and the upper insulating member is arranged corresponding to the receiving groove. A side of the upper insulating member facing the cover body abuts against the bottom wall of the receiving groove.

6. The battery cover according to any one of claims 1 to 3, characterized in that: The width of the tape ring is 5 mm to 30 mm.

7. The battery cover according to any one of claims 1 to 3, characterized in that: The adhesive tape loop is provided with one loop or is stacked with a plurality of loops.

8. The battery cover according to any one of claims 1 to 3, characterized in that: The first perforation, the second perforation and the third perforation are extended in the same direction to form a strip-shaped hole body, and the tape loop is provided with one loop or is sequentially provided with several loops along the extending direction of the strip-shaped hole body.

9. A battery, characterized in that: A battery cover according to any one of claims 1 to 8.

10. A battery pack, characterized in that: A battery comprising the battery of claim 9.

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