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 upper insulating part is arranged on the first side face of the cover plate body, a second through hole is formed in the upper insulating part, and the second through hole is communicated with the first through hole; wherein the upper insulating part and the cover plate body are clamped through the buckle and the clamping block, the buckle is arranged on one of the upper insulating part and the cover plate body, and the clamping block is arranged on the other one of the upper insulating part and the cover plate body. According to the utility model, the cover plate body and the upper insulating part are clamped by utilizing the buckle and the clamping block, the first through hole and the second 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 second 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; an upper insulating member, arranged on the first side surface of the cover body, the upper insulating member provided with a second through-hole, the second through-hole being connected to the first through-hole; wherein the upper insulating member and the cover body are connected by a clip and a clip block, the clip is arranged on one of the upper insulating member and the cover body, and the clip block is arranged on the other of the upper insulating member and the cover body.

[0005] Beneficial effect: The cover body and the upper insulating member are clamped together by means of clips and blocks, and the first through-hole and the second 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 second through-hole, and then electrically connected to the connecting piece and / or the pole. Therefore, the connection method of the pole and the pole 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 upper 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 upper insulating member, thereby improving the overall space utilization of the battery.

[0008] In an optional embodiment, a receiving groove is provided on the first side of the cover body, the upper insulating member is arranged corresponding to the receiving groove, the clip is connected to the bottom wall of the receiving groove or the card interface is provided at the bottom wall of the receiving groove.

[0009] 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.

[0010] In an optional embodiment, the upper insulating member includes a flat plate portion and a boss portion, the flat plate portion is arranged in the accommodating groove, the boss portion is protrudingly arranged on a side of the flat plate portion facing away from the cover body, the snap fastener is arranged on one of a side of the flat plate portion facing the cover body and a bottom wall of the accommodating groove, and the card interface is opened on the other side of the flat plate portion facing the cover body and the bottom wall of the accommodating groove.

[0011] In an optional embodiment, along the thickness direction of the battery cover, the thickness of the cover body is H, and the distance between a side of the flat portion facing away from the cover body and the first side surface of the cover body is h, satisfying 0≤h≤0.5H.

[0012] Beneficial effect: While ensuring the overall space utilization of the battery, it avoids the accommodating groove being too deep to affect the structural strength of the cover body.

[0013] 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.

[0014] In an optional embodiment, the upper insulating member and the cover body are connected by one clip and a corresponding clip block; or, the upper insulating member and the cover body are connected by several clips and several corresponding clip blocks.

[0015] Beneficial effect: The number and positions of the clips and blocks used to clamp the upper insulating member and the cover body can be specifically set according to actual needs to ensure the stability of the connection between the upper insulating member and the cover body.

[0016] In an optional embodiment, the battery cover further includes a lower insulating member, which is arranged on the second side of the cover body and connected to the cover body, and the lower insulating member is provided with a third 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 a second aspect, the present invention further provides a battery, comprising the above-mentioned battery cover.

[0019] In a third aspect, the present invention further provides a battery pack comprising the above-mentioned battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 This is a schematic structural diagram of a battery cover according to an embodiment of the present invention at one angle;

[0022] Figure 2 for Figure 1 A schematic structural diagram of the battery cover shown in another angle;

[0023] Figure 3 for Figure 1 The exploded structural diagram of the battery cover shown;

[0024] Figure 4 for Figure 2 The exploded structural diagram of the battery cover shown;

[0025] Figure 5 for Figure 1 A top view of the battery cover shown;

[0026] Figure 6 for Figure 5 Partial cross-sectional view of AA;

[0027] Figure 7 This is a structural diagram of a buckle according to an embodiment of the present utility model;

[0028] Figure 8 This is a schematic structural diagram of another buckle according to an embodiment of the present utility model;

[0029] Figure 9 This is a schematic structural diagram of another buckle according to an embodiment of the present utility model.

[0030] Description of reference numerals:

[0031] 1. Cover plate body; 11. First through-hole; 12. Accommodation groove; 2. Upper insulating member; 21. Second through-hole; 22. Flat plate portion; 23. Boss portion; 3. Buckle; 31. Fastener; 311. Main body; 312. Hook; 4. Block; 5. Card interface; 6. Lower insulating member; 61. Third through-hole. DETAILED DESCRIPTION

[0032] 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.

[0033] The following combination Figures 1 to 9 , describing the embodiments of the present utility model.

[0034] 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; an upper insulating member 2, which is arranged on a first side surface of the cover body 1, and the upper insulating member 2 is provided with a second through-hole 21, and the second through-hole 21 is connected to the first through-hole 11; wherein, the upper 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 upper insulating member 2 and the cover body 1, and the block 4 is provided on the other of the upper insulating member 2 and the cover body 1.

[0035] The battery cover of this embodiment uses a clip 3 and a block 4 to clamp the cover body 1 and the upper insulating member 2, and the first through-hole 11 and the second 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 second 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.

[0036] It should be noted that when the upper insulating member 2 is provided with a snap 3, a corresponding block 4 is provided at a corresponding position on the cover body 1; and when the upper insulating member 2 is provided with a block 4, a corresponding snap 3 is provided at a corresponding position on the cover body 1. With this arrangement, the upper insulating member 2 and the cover body 1 are connected by the coordinated engagement of the snap 3 and the block 4.

[0037] Specifically, in this embodiment, Figure 3 and Figure 4As shown, the buckle 3 is provided on the upper 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 upper insulating member 2 accordingly.

[0038] 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 2 is located above the cover body 1.

[0039] It should be noted that a buckle 3 and a clamping block 4 are combined to form a clamping assembly, that is, the upper insulating member 2 and the cover body 1 are connected via the clamping assembly.

[0040] Specifically, in one embodiment, Figure 3 and Figure 4 As shown, the upper insulating member 2 and the cover body 1 are connected by a snap 3 and a corresponding clamping block 4. That is, the upper insulating member 2 is connected to the cover body 1 by a clamping assembly.

[0041] Of course, in other alternative embodiments, the upper insulating member 2 and the cover body 1 can also be connected via a plurality of clips 3 and corresponding plurality of clamping blocks 4. That is, a single upper insulating member 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 upper insulating member 2 and the cover body 1, and correspondingly, the clamping blocks 4 in each clamping assembly can be provided on the other of the upper insulating member 2 and the cover body 1.

[0042] With this arrangement, the number and positions of the clips 3 and the blocks 4 for clamping the upper 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 upper insulating member 2 and the cover body 1.

[0043] In one embodiment, Figure 3 and Figure 4 As shown, the cover body 1 is provided with a card interface 5, the 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 upper 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 upper insulating member 2, thereby improving the overall space utilization of the battery.

[0044] Of course, in other alternative embodiments, the card interface 5 is opened on the upper 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 .

[0045] Furthermore, in this 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.

[0046] 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 first side of the cover body 1 along the thickness direction of the battery cover, and does not pass through the second side of the cover body 1.

[0047] In one embodiment, Figures 7 to 9 As shown, the buckle 3 includes a fastener 31 , and there is one or more fasteners 31 , and each fastener 31 is engaged with the clamping block 4 .

[0048] 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.

[0049] In summary, an upper 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.

[0050] In one embodiment, Figures 3 to 9 As shown, the fastener 31 includes a main body 311 and a hook 312. One end of the main body 311 is connected to the upper 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 upper insulating member 2 to the side of the block 4 facing away from the upper insulating member 2, so that the hook 312 is hooked on the side of the block 4 facing away from the upper insulating member 2.

[0051] 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.

[0052] Furthermore, 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 in opposite directions. Further, the distance between the two fasteners 31 can be set to be no less than 5 mm.

[0053] 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.

[0054] In one embodiment, Figure 1 、 Figure 3 、 Figure 5 and Figure 6 As shown, a receiving groove 12 is provided on the first side of the cover body 1, the upper insulating member 2 is provided corresponding to the receiving groove 12, and the card interface 5 is provided at the bottom wall of the receiving groove 12. At this time, the buckle 3 is provided on the side of the upper insulating member 2 facing the cover body 1.

[0055] Of course, in other alternative embodiments, the buckle 3 may be connected to the bottom wall of the accommodating groove 12 , and the card interface 5 may be provided on a side of the upper insulating member 2 facing the cover body 1 .

[0056] The provision of the receiving groove 12 facilitates the installation and positioning of the upper insulating member 2 and prevents the upper insulating member 2 from protruding too far 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 far from the cover body 1, the overall volume of the battery will increase, and the overall space utilization of the battery will decrease.

[0057] Specifically, such as Figure 3 As shown, the upper insulating member 2 includes a flat plate portion 22 and a boss portion 23. The flat plate portion 22 is disposed in the receiving groove 12. The boss portion 23 protrudes from the side of the flat plate portion 22 facing away from the cover body 1. The buckle 3 is disposed on one of the side of the flat plate portion 22 facing the cover body 1 and the bottom wall of the receiving groove 12. The card interface 5 is provided on the other side of the side of the flat plate portion 22 facing the cover body 1 and the bottom wall of the receiving groove 12. That is, as shown in FIG. Figure 4 As shown, the snap fastener 3 is arranged on the side of the flat plate portion 22 facing the cover body 1. At this time, the bottom wall of the accommodating groove 12 is correspondingly provided with a snap interface 5; or, the snap fastener 3 is arranged on the bottom wall of the accommodating groove 12. At this time, the side of the flat plate portion 22 facing the cover body 1 is correspondingly provided with a snap interface 5.

[0058] In one embodiment, Figure 6As shown, along the thickness direction of the battery cover, the cover body 1 has a thickness H, and the distance between the side of the flat portion 22 facing away from the cover body 1 and the first side surface of the cover body 1 is h, satisfying 0≤h≤0.5H. This arrangement ensures overall battery space utilization while preventing the accommodating groove 12 from being too deep, thereby affecting the structural strength of the cover body 1. In other words, the groove area and groove depth of the accommodating groove 12 are sufficient to fully accommodate the flat portion 22. At the same time, the groove area and groove depth of the accommodating groove 12 do not need to be excessively large, otherwise it will easily lead to insufficient structural strength of the cover body 1.

[0059] In one embodiment, Figure 3 and Figure 4 As shown, the battery cover also includes a lower insulating member 6, which is disposed on the second side of the cover body 1 and connected to the cover body 1. The lower insulating member 6 defines a third through-hole 61, which communicates with the first through-hole 11. The first through-hole 11, the second through-hole 21, and the third through-hole 61 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.

[0060] 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 6 is located below the cover body 1.

[0061] It should be noted that the lower insulating member 6 can be connected to the cover body 1 by bonding, snapping, plugging, etc.

[0062] According to an embodiment of the present invention, on the other hand, a battery is provided, comprising the above-mentioned battery cover.

[0063] 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 21, and the third perforation 61, and can then be electrically connected to a connecting piece and / or a pole post.

[0064] According to an embodiment of the present invention, in another aspect, a battery pack is provided, comprising the above-mentioned battery.

[0065] 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; an upper insulating member disposed on the first side surface of the cover body, the upper insulating member being provided with a second through-hole, the second through-hole being in communication with the first through-hole; The upper insulating member and the cover body are connected by a clip and a block, the clip is provided on one of the upper insulating member and the cover body, and the block is provided on the other of the upper insulating member and the cover body.

2. The battery cover according to claim 1, characterized in that: A card interface is provided on the upper 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: A receiving groove is provided on the first side surface of the cover body, the upper insulating member is arranged corresponding to the receiving groove, the buckle is connected to the bottom wall of the receiving groove or the card interface is provided at the bottom wall of the receiving groove.

4. The battery cover according to claim 3, characterized in that: The upper insulating member includes a flat plate portion and a boss portion, the flat plate portion is arranged in the accommodating groove, the boss portion is protrudingly arranged on a side of the flat plate portion facing away from the cover body, the clip is arranged on one of a side of the flat plate portion facing the cover body and a bottom wall of the accommodating groove, and the card interface is opened on the other side of the flat plate portion facing the cover body and the bottom wall of the accommodating groove.

5. The battery cover according to claim 4, characterized in that: Along the thickness direction of the battery cover, the thickness of the cover body is H, and the distance between a side of the flat portion facing away from the cover body and the first side surface of the cover body is h, satisfying 0≤h≤0.5H.

6. The battery cover according to any one of claims 1 to 5, 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.

7. The battery cover according to any one of claims 1 to 5, characterized in that: The upper insulating member and the cover body are connected by one buckle and a corresponding clamping block; or, the upper insulating member and the cover body are connected by several buckles and several corresponding clamping blocks.

8. The battery cover according to any one of claims 1 to 5, characterized in that: The battery cover further includes a lower insulating member, which is disposed on the second side of the cover body and connected to the cover body. The lower insulating member is provided with a third through-hole, which is connected to the first through-hole.

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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