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 provided with a first through hole; the lower insulating part is arranged on the second side face of the cover plate body, a third through hole is formed in the lower insulating part, and the third through hole is communicated with the first through hole; wherein the lower insulating part and the cover plate body are clamped through the buckle and the clamping block, the buckle is arranged on one of the lower insulating part and the cover plate body, and the clamping block is arranged on the other one of the lower insulating part and the cover plate body. According to the utility model, the cover plate body and the lower insulating part are clamped by utilizing the buckle and the clamping block, the first through hole and the third through hole are communicated, and the tabs of the pole group in the shell are led out of the shell through the first through hole and the third through hole and then are electrically connected with the connecting sheet and / or the pole post, so that the structure is simple and convenient. The connection mode of the pole and the tab does not occupy the internal space of the shell, so that 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] Batteries, such as lithium-ion batteries, sodium-ion batteries, solid-state batteries, etc., have outstanding advantages such as high energy density and good cycle performance, and are widely used in portable electronic devices, electric vehicles, power tools, drones, energy storage equipment and other fields. In the existing electric vehicle industry, high energy density is pursued to improve the endurance of the entire vehicle. Therefore, this can be achieved by increasing the volume energy density of the battery, that is, it is necessary to fill more battery materials in a certain volume of the accommodation space formed by the battery cover and the shell. However, in the prior art, the tabs of the electrode group are electrically connected to the poles of the cover through connecting pieces within the accommodation space. Therefore, the connection method between the poles and the tabs results in excessive occupation of the internal space of the shell, and the utilization rate of the internal space of the shell is low. 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, provided with a first through-hole; a lower insulating member, arranged on the second side surface of the cover body, the lower insulating member provided with a third through-hole, the third through-hole being connected to the first through-hole; wherein the lower insulating member and the cover body are connected by a clip and a clip block, the clip is arranged on one of the lower insulating member and the cover body, and the clip block is arranged on the other of the lower insulating member and the cover body.

[0005] Beneficial effect: The cover body and the lower insulating member are clamped together by means of clips and blocks, and the first through-hole and the third through-hole are connected. The pole ears of the pole group in the shell are led out to the outside of the shell through the first through-hole and the third through-hole, and then electrically connected to the connecting piece and / or the pole. Therefore, the connection method of the pole and the ear 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, a card interface is provided on the lower insulating member or the cover body, the card block is located in the card interface, and the buckle is inserted into the card interface and engaged with the card block.

[0007] Beneficial effect: By setting a card interface, the buckle and the card block are connected in the card interface, avoiding the connection between the buckle and the card block occupying the external space of the cover body and the lower insulating member, thereby improving the overall space utilization of the battery.

[0008] In an optional embodiment, the card interface is a slot or a hole.

[0009] In an optional embodiment, the buckle includes a fastener, and there is one or more fasteners, and each of the fasteners is engaged with the clamping block.

[0010] Beneficial effect: The number of fasteners in the buckle can be specifically set according to actual needs, which ensures the stability of the buckle and is easy to process.

[0011] In an optional embodiment, the fastener includes a main body and a hook, one end of the main body is connected to the lower insulating member, and the hook is connected to the other end of the main body, and the main body extends from a side of the card block facing the lower insulating member to a side of the card block facing away from the lower insulating member, so that the hook is hooked on a side of the card block facing away from the lower insulating member; or,

[0012] The fastener includes a main body and a hook, one end of the main body is connected to the cover body, and the hook is connected to the other end of the main body. The main body extends from a side of the card block facing the cover body to a side of the card block facing away from the cover body, so that the hook is arranged on a side of the card block facing away from the cover body.

[0013] Beneficial effect: the main body is used to connect the hook with the lower insulating member or the cover body, and the hook is arranged on the clamping block to realize the clamping connection. The overall structure is simple and the assembly of the lower insulating member and the cover body is convenient.

[0014] In an optional embodiment, the buckle includes two fasteners that are arranged relatively spaced apart, and the two hooks of the two fasteners are arranged relatively to each other or back to back.

[0015] Beneficial effect: The matching mode of the buckle and the block is more flexible, which facilitates the assembly of the lower insulating member and the cover body.

[0016] In an optional embodiment, the battery cover further includes an upper insulating member, which is arranged on the first side of the cover body and connected to the cover body, and the upper insulating member is provided with a second through-hole, which is connected to the first through-hole.

[0017] Beneficial effect: The tab perforation is formed by connecting the first perforation, the second perforation and the third perforation, thereby ensuring the overall insulation performance of the battery cover and the utilization rate of the internal space of the shell.

[0018] 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,

[0019] 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,

[0020] 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.

[0021] 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.

[0022] In a second aspect, the present invention further provides a battery, comprising the above-mentioned battery cover.

[0023] In a third aspect, the present invention further provides a battery pack comprising the above-mentioned battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 This is a schematic structural diagram of a battery cover according to an embodiment of the present invention at one angle;

[0026] Figure 2 for Figure 1 A schematic structural diagram of the battery cover shown in another angle;

[0027] Figure 3 for Figure 1 The exploded structural diagram of the battery cover shown;

[0028] Figure 4 for Figure 2 The exploded structural diagram of the battery cover shown;

[0029] Figure 5 for Figure 1 A top view of the battery cover shown;

[0030] Figure 6 for Figure 5 Partial cross-sectional view of AA;

[0031] Figure 7 This is a structural diagram of a buckle according to an embodiment of the present utility model;

[0032] Figure 8 This is a schematic structural diagram of another buckle according to an embodiment of the present utility model;

[0033] Figure 9 This is a schematic structural diagram of another buckle according to an embodiment of the present utility model.

[0034] Description of reference numerals:

[0035] 1. Cover plate body; 11. First perforation; 2. Lower insulating member; 21. Third perforation; 3. Buckle; 31. Fastener; 311. Main body; 312. Hook; 4. Block; 5. Card interface; 6. Upper insulating member; 61. Second perforation; 7. Bump. DETAILED DESCRIPTION

[0036] 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.

[0037] The following combination Figures 1 to 9 , describing the embodiments of the present utility model.

[0038] According to an embodiment of the present utility model, on the one hand, a battery cover is provided, including: a cover body 1, which is provided with a first through-hole 11; a lower insulating member 2, which is arranged on the second side surface of the cover body 1, and the lower insulating member 2 is provided with a third through-hole 21, and the third through-hole 21 is connected to the first through-hole 11; wherein the lower insulating member 2 and the cover body 1 are connected by a clip 3 and a block 4, the clip 3 is provided on one of the lower insulating member 2 and the cover body 1, and the block 4 is provided on the other of the lower insulating member 2 and the cover body 1.

[0039] The battery cover of this embodiment uses a clip 3 and a block 4 to clamp the cover body 1 and the lower insulating member 2, and the first through-hole 11 and the third through-hole 21 are connected. The tabs of the pole group in the shell are led out to the outside of the shell through the first through-hole 11 and the third through-hole 21, and then electrically connected to the connecting piece and / or the pole. Therefore, the connection method of 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.

[0040] It should be noted that the buckle 3 is provided on the lower insulating member 2, and correspondingly, a clamping block 4 is provided at a corresponding position on the cover body 1; and when the clamping block 4 is provided on the lower insulating member 2, a buckle 3 is provided at a corresponding position on the cover body 1. In this arrangement, the buckle 3 and the clamping block 4 cooperate to connect the lower insulating member 2 and the cover body 1.

[0041] Specifically, in this embodiment, Figure 3 and Figure 4 As shown, the buckle 3 is provided on the lower insulating member 2, and the block 4 is provided on the cover body 1. Of course, in other alternative embodiments, the buckle 3 can also be provided on the cover body 1, and the block 4 can be provided on the lower insulating member 2 accordingly.

[0042] It is worth noting that, please refer to Figure 3 The second side surface of the cover body 1 is the lower side surface of the cover body 1. Therefore, it can be understood that the lower insulating member 2 is located below the cover body 1.

[0043] It should be noted that a clip 3 and a clamping block 4 are combined to form a clamping assembly, that is, the lower insulating member 2 and the cover body 1 are connected via the clamping assembly.

[0044] Specifically, in one embodiment, Figure 3 and Figure 4 As shown, the lower insulator 2 and the cover body 1 are connected by a plurality of clips 3 and corresponding plurality of clamping blocks 4. That is, a lower insulator 2 can be connected to the cover body 1 via a plurality of clamping assemblies. It should be noted that the clips 3 in each clamping assembly can be selectively provided on one of the lower insulator 2 and the cover body 1, and correspondingly, the clamping blocks 4 in each clamping assembly are provided on the other of the lower insulator 2 and the cover body 1.

[0045] Of course, in other alternative embodiments, the lower insulating member 2 and the cover body 1 may be connected by a buckle 3 and a corresponding clamping block 4. That is, the lower insulating member 2 is connected to the cover body 1 by a clamping assembly.

[0046] With this arrangement, the number and positions of the clips 3 and the blocks 4 for clamping the lower insulating member 2 and the cover body 1 can be specifically set according to actual needs to ensure the stability of the connection between the lower insulating member 2 and the cover body 1.

[0047] In one embodiment, Figure 3 and Figure 4 As shown, the cover body 1 is provided with a card interface 5, a card block 4 is located within the card interface 5, and the clip 3 is inserted into the card interface 5 and engaged with the card block 4. It should be noted that the clip 3 is provided on the lower insulating member 2. The provision of the card interface 5 allows the clip 3 and the card block 4 to be engaged within the card interface 5, preventing the connection between the clip 3 and the card block 4 from occupying the space outside the cover body 1 and the lower insulating member 2, thereby improving the overall space utilization of the battery.

[0048] Of course, in other alternative embodiments, the card interface 5 is opened on the lower insulating member 2 , and the card block 4 is located in the card interface 5 . In this case, the buckle 3 is set on the cover body 1 .

[0049] In one embodiment, Figures 3 to 6 As shown, the card interface 5 is a hole. Of course, in other alternative embodiments, the card interface 5 can also be a slot.

[0050] Please note that Figure 3 、 Figure 4 and Figure 6 The hole is set along the thickness direction of the battery cover through the cover body 1. The groove is formed by the second side of the cover body 1 along the thickness direction of the battery cover, and does not pass through the first side of the cover body 1.

[0051] In one embodiment, Figures 7 to 9 As shown, the buckle 3 includes a fastener 31, which is provided with one or more fasteners 31, and each fastener 31 is engaged with the clamping block 4. In this way, the number of fasteners 31 in the buckle 3 can be specifically set according to actual needs, while ensuring the stability of the clamping connection and facilitating processing.

[0052] Furthermore, the clamping block 4 includes a block body, and the block body is provided with one or more. One block body can be correspondingly clamped with one fastener 31, and one block body can also be correspondingly clamped with multiple fasteners 31.

[0053] In summary, a lower insulating member 2 is connected to the cover body 1 through one or several snap-fit ​​components. A snap-fit ​​component includes a buckle 3 and a block 4. A buckle 3 includes one or several fasteners 31, and a block 4 includes one or several blocks.

[0054] In one embodiment, Figures 3 to 9As shown, the fastener 31 includes a main body 311 and a hook 312. One end of the main body 311 is connected to the lower insulating member 2, and the hook 312 is connected to the other end of the main body 311. The main body 311 extends from the side of the block 4 facing the lower insulating member 2 to the side of the block 4 facing away from the lower insulating member 2, so that the hook 312 is hooked on the side of the block 4 facing away from the lower insulating member 2.

[0055] Of course, in other alternative embodiments, the fastener 31 includes a main body 311 and a hook 312, so that one end of the main body 311 is connected to the cover body 1, and the hook 312 is connected to the other end of the main body 311, and the main body 311 extends from the side of the block 4 facing the cover body 1 to the side of the block 4 facing away from the cover body 1, so that the hook 312 is hooked on the side of the block 4 facing away from the cover body 1.

[0056] With this arrangement, the main body 311 is used to connect the hook 312 to the lower insulating member 2 or the cover body 1, and the hook 312 is hooked on the clamping block 4 to achieve clamping. The overall structure is simple and facilitates the assembly of the lower insulating member 2 and the cover body 1.

[0057] In one embodiment, when the buckle 3 includes two buckles 31 arranged relatively spaced apart, such as Figure 9 As shown, the two hooks 312 of the two fasteners 31 can be arranged opposite to each other, such as Figure 8 As shown, the two hooks 312 of the two fasteners 31 can also be arranged back to back.

[0058] Please note that Figure 9 When the two hooks 312 of the two fasteners 31 are arranged relative to each other, the two fasteners 31 can be engaged with a block, that is, the two hooks 312 of the two fasteners 31 are hooked on the same block, and the block is located between the two main bodies 311.

[0059] With such arrangement, the cooperation between the buckle 3 and the clamping block 4 is more flexible, which facilitates the assembly of the lower insulating member 2 and the cover body 1 .

[0060] In one embodiment, Figure 3 and Figure 4 As shown, the battery cover also includes an upper insulating member 6, which is disposed on a first side surface of the cover body 1 and connected to the cover body 1. The upper insulating member 6 defines a second through-hole 61, which communicates with the first through-hole 11. The first through-hole 11, the second through-hole 61, and the third through-hole 21 are connected to form a tab through-hole, thereby ensuring the overall insulation performance of the battery cover while ensuring the utilization of the internal space of the housing.

[0061] Furthermore, a receiving groove is formed on the first side surface of the cover body 1 , and the upper insulating member 6 is arranged corresponding to the receiving groove, and a side of the upper insulating member 6 facing the cover body 1 abuts against the bottom wall of the receiving groove.

[0062] Please note that Figure 3 and Figure 4 The cover body 1 is provided with a card interface 5, which is positioned corresponding to the receiving slot. The card interface 5 is a hole. Preferably, the distance between the edge of the card interface 5 and the edge of the receiving slot is no less than 2 mm. When the card interface 5 is provided on the cover body 1 and is a slot, the thickness of the remaining portion of the cover body 1 where the card interface 5 is provided is no less than 0.5 mm, thereby ensuring the structural strength of the cover body 1 and preventing cracking of the cover body 1 and leakage. Preferably, the distance between the edge of the card interface 5 and the edge of the explosion-proof valve mounting position is no less than 3 mm.

[0063] It is worth noting that, please refer to Figure 3 , the first side surface of the cover body 1 is the upper side surface of the cover body 1. Therefore, it can be understood that the upper insulating member 6 is located above the cover body 1.

[0064] It should be noted that the upper insulating member 6 can be connected to the cover body 1 by bonding, snapping, plugging, etc.

[0065] In one embodiment, Figure 3 As shown, a convex bump 7 is formed around the outer periphery of the third through hole 21 on one side of the lower insulating member 2 facing the cover body 1 . The convex bump 7 is inserted into the first through hole 11 and abuts against the one side of the upper insulating member 6 facing the cover body 1 .

[0066] Of course, in other alternative embodiments, a bulge 7 may be formed on the side of the upper insulating member 6 facing the cover body 1 around the outer periphery of the second through-hole 61, the bulge 7 may be inserted into the first through-hole 11, and abut against the side of the lower insulating member 2 facing the cover body 1; or, a bulge 7 may be formed on the side of the lower insulating member 2 facing the cover body 1 around the outer periphery of the third through-hole 21 and on the side of the upper insulating member 6 facing the cover body 1 around the outer periphery of the second through-hole 61, and the bulge 7 of the lower insulating member 2 and the bulge 7 of the upper insulating member 6 may be inserted into the first through-hole 11 and abut against each other.

[0067] Therefore, the convex bulge 7 formed by the lower insulating member 2 and / or the upper insulating member 6 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 7, so insulation is formed between the tab and the cover body 1 through the convex bulge 7.

[0068] According to an embodiment of the present invention, on the other hand, a battery is provided, comprising the above-mentioned battery cover.

[0069] In one embodiment, the battery further comprises a housing, which is hollow and has an opening at at least one end. A battery cover is connected to the housing and blocks the opening, and the battery cover and the housing together form a storage space. Furthermore, the battery further comprises a pole group, which is disposed in correspondence with the storage space. The pole group includes a tab, which extends through a tab perforation formed within the storage space by connecting the first perforation 11, the second perforation 61, and the third perforation 21, and can then be electrically connected to a connecting piece and / or a pole post.

[0070] According to an embodiment of the present invention, in another aspect, a battery pack is provided, comprising the above-mentioned battery.

[0071] 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 a first through hole; a lower insulating member disposed on the second side surface of the cover body, the lower insulating member being provided with a third through-hole, the third through-hole being in communication with the first through-hole; The lower insulating member and the cover body are connected by a clip and a block, the clip is provided on one of the lower insulating member and the cover body, and the block is provided on the other of the lower insulating member and the cover body.

2. The battery cover according to claim 1, characterized in that: A card interface is provided on the lower insulating member or the cover body, the card block is located in the card interface, and the buckle is inserted into the card interface and engaged with the card block.

3. The battery cover according to claim 2, characterized in that: The card interface is a slot or a hole.

4. The battery cover according to any one of claims 1 to 3, characterized in that: The buckle includes a fastener, and one or more fasteners are provided. Each of the fasteners is connected to the card block.

5. The battery cover according to claim 4, characterized in that: The fastener includes a main body and a hook, one end of the main body is connected to the lower insulating member, and the hook is connected to the other end of the main body, and the main body extends from a side of the clamping block facing the lower insulating member to a side of the clamping block facing away from the lower insulating member, so that the hook is hooked on a side of the clamping block facing away from the lower insulating member; or The fastener includes a main body and a hook, one end of the main body is connected to the cover body, and the hook is connected to the other end of the main body. The main body extends from a side of the card block facing the cover body to a side of the card block facing away from the cover body, so that the hook is arranged on a side of the card block facing away from the cover body.

6. The battery cover according to claim 5, characterized in that: The buckle includes two fasteners that are spaced apart from each other, and the two hooks of the two fasteners are arranged opposite to each other or back to back.

7. The battery cover according to any one of claims 1 to 3, characterized in that: The battery cover further includes an upper insulating member, which is disposed on a first side of the cover body and connected to the cover body. The upper insulating member is provided with a second through-hole, which is communicated with the first through-hole.

8. The battery cover according to claim 7, 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.

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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