Cover plate assembly and battery

Abstract

The utility model belongs to the technical field of power batteries, and discloses a cover plate assembly and a battery, the cover plate assembly comprises a cover plate body, a combined colloid, a connecting sheet and a clamping piece, and the cover plate body is provided with a tab through hole; the combined colloid comprises upper plastic, the upper plastic is arranged on the upper side of the cover plate body, and the upper plastic is provided with through holes corresponding to the through holes of the tabs; the connecting piece is clamped on the upper plastic through the clamping piece, and the clamping piece is arranged on the connecting piece or the upper plastic. The battery comprises a shell and the cover plate assembly, an opening is formed in the shell, the cover plate assembly blocks the opening to form a containing space so that a battery cell can be placed in the containing space, and when the cover plate assembly blocks the opening, the lower side face of the cover plate body faces the interior of the shell, so that the upper plastic and the connecting piece can be located on the outer side of the shell; and furthermore, the pole can be arranged on the outer side of the shell, so that the utilization space in the shell can be increased, and the space utilization rate is improved.

Description

Technical Field

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

[0002] The cover in the prior art often includes a cover body and a connecting piece. The connecting piece is located on the lower side of the cover body to connect the tab and the pole through the connecting piece. The connecting piece is located inside the battery shell, which is not conducive to the utilization of the internal space of the battery. Utility Model Content

[0003] One of the purposes of the present utility model is to provide a cover plate assembly capable of placing a connecting piece on the outside of the cover plate body;

[0004] A second object of the present invention is to provide a battery that can increase the utilization of the internal space of the battery.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A cover plate assembly comprising:

[0007] A cover plate body, wherein the cover plate body is provided with a tab through hole;

[0008] A combined colloid, the combined colloid comprising an upper plastic, the upper plastic being disposed on the upper side of the cover body, the upper plastic being provided with a perforation corresponding to the tab through-hole;

[0009] The connecting piece is connected to the upper plastic by a clamping piece, and the clamping piece is arranged on the connecting piece or the upper plastic.

[0010] In some embodiments, the upper plastic is provided with a receiving groove, and the connecting piece is clamped in the receiving groove via a clamping member.

[0011] In some embodiments, the two clamping members are located on opposite walls of the accommodating groove.

[0012] In some embodiments, the two clamping members are located on opposite sides of the connecting piece, and the opposite groove walls of the accommodating groove are provided with clamping holes or clamping protrusions, and the clamping members can be clamped with the clamping holes or the clamping protrusions.

[0013] In some embodiments, each of the clamping members includes a clamping block, a limiting protrusion is provided at the first end of the clamping block, and the limiting protrusion is provided with an inclined abutment surface, which extends from the first end of the clamping block to the second end of the clamping block in a direction gradually away from the clamping block.

[0014] In some embodiments, each of the clamping members includes two clamping blocks, and the two clamping blocks are spaced apart and arranged on the slot wall of the accommodating slot or the connecting piece, and the inclined abutting surfaces of the two clamping blocks face each other or away from each other.

[0015] In some embodiments, the composite colloid further includes a lower plastic, the lower plastic is disposed on the lower side of the cover body, and the lower plastic is provided with the through hole corresponding to the tab through hole.

[0016] In some embodiments, a mounting groove is provided on the upper side of the cover body, and the upper plastic and the tab through-hole are located at the bottom of the mounting groove.

[0017] In some embodiments, the bottom surface of the accommodating groove is not higher than the upper side surface of the cover body; the distance between the bottom of the accommodating groove and the upper side surface of the cover body is a, a=0-0.5Hmm, where H is the thickness of the cover body.

[0018] A battery is also provided, which includes a shell having an opening and a cover assembly as described above, wherein the cover assembly is sealed in the opening to form a storage space for accommodating the battery cell, and the lower side of the cover body faces the inside of the shell.

[0019] Beneficial effects of the utility model:

[0020] The connecting piece can be fixed to the upper plastic on the upper side of the cover body by means of a clip-on connection. Thus, when the upper surface of the cover body is placed on the outside of the shell, the tabs in the shell can extend to the outside of the shell through the tab through-holes of the cover body and the through-holes in the upper plastic, so that they can be connected to the connecting piece placed on the upper plastic, replacing the traditional method of arranging the connecting piece inside the shell, thereby improving space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a cover plate assembly in an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 Exploded diagram;

[0023] Figure 3 This is an exploded view of the combined colloid in the embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of a clamping block in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the embodiment of the utility model in which the inclined abutting surfaces of the two clamping blocks face away from each other;

[0026] Figure 6 This is a schematic diagram of the inclined abutting surfaces of two clamping blocks facing each other in an embodiment of the utility model;

[0027] Figure 7 is a top view of the cover plate assembly in an embodiment of the present utility model;

[0028] Figure 8 yes Figure 7 Middle AA section;

[0029] Figure 9 yes Figure 7 Middle BB cross-section.

[0030] In the picture:

[0031] 1. Cover plate body; 11. Tab through hole; 12. Mounting slot; 13. Liquid filling port;

[0032] 2. Assembled colloid; 21. Upper plastic; 211. Receiving groove; 212. Ring edge; 22. Lower plastic; 23. Perforation;

[0033] 3. Clamping block; 31. Limiting protrusion; 32. Inclined abutting surface;

[0034] 4. Connecting piece;

[0035] 5. Explosion-proof valve. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0037] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0040] like Figures 1 to 9 As shown, the utility model provides a cover assembly, which includes a cover body 1, a combined colloid 2, a connecting piece 4 and a clip. The cover body 1 is provided with a tab through-hole 11 for the tab to pass through; the combined colloid 2 includes an upper plastic 21, which is arranged on the upper side of the cover body 1, and the upper plastic 21 is provided with a through-hole 23 corresponding to the tab through-hole 11; the connecting piece 4 is clipped to the upper plastic 21 through the clip, and the clip is arranged on the connecting piece 4 or the upper plastic 21.

[0041] The connecting piece 4 can be fixed to the upper plastic 21 on the upper side of the cover body 1 by means of a clip. Therefore, when the upper surface of the cover body 1 is placed on the outside of the battery shell, the tabs in the shell can extend to the outside of the shell through the tab through-holes 11 of the cover body 1 and the through-holes 23 of the upper plastic 21, so that they can be connected to the connecting piece 4 placed on the upper plastic 21, replacing the traditional method of setting the connecting piece 4 inside the shell, thereby improving space utilization.

[0042] In some embodiments, the cover body 1 is plate-shaped and is provided with a plurality of mounting grooves 12. The tab through-holes 11 are provided at the bottom of the mounting grooves 12. The upper plastic 21 is also provided at the bottom of the mounting grooves 12, so that the through-holes 23 on the upper plastic 21 are opposite to the tab through-holes 11. The tabs can pass through the tab through-holes 11 and the through-holes 23 and be folded over the cover body 1.

[0043] It should be noted that the number of mounting slots 12 can vary depending on the number of positive and negative electrodes, and is not specifically limited here. The number N of tab through-holes 11 can also vary depending on the number of positive and negative electrodes, and can be set differently according to different scenarios. For example, when only a positive electrode or a negative electrode is provided on the cover body 1, the number of tab through-holes 11 N ≥ 1; when a positive electrode is provided at one end of the cover body 1 and a negative electrode is provided at the other end, the number of tab through-holes 11 located at the positive electrode N ≥ 1, and the number of tab through-holes 11 located at the negative electrode N ≥ 1.

[0044] like Figure 3 As shown, the upper plastic 21 is provided with a receiving groove 211, and the connecting piece 4 is engaged with the receiving groove 211. In some embodiments, the engaging members are provided on two opposite groove walls of the receiving groove 211, so that after the connecting piece 4 enters the receiving groove 211, it is restricted by the engaging members on the groove walls; in other embodiments, the engaging members can be provided on opposite sides of the connecting piece 4, and engaging holes or engaging protrusions are provided on the corresponding groove walls of the receiving groove 211, so that the engaging members engage with the engaging holes or engaging protrusions, thereby restricting it within the receiving groove 211. In order to make the engaging member enter the receiving groove 211 more smoothly, the engaging block 3 has a certain degree of deformation ability, for example, it is made of plastic material.

[0045] In some embodiments, each clamping member includes a clamping block 3, a limiting protrusion 31 is provided at the first end of the clamping block 3, and the limiting protrusion 31 is provided with an inclined abutment surface 32, which extends from the first end of the clamping block 3 to the second end of the clamping block 3 in a direction gradually away from the clamping block 3.

[0046] like Figure 4 As shown, when each clamping member includes a clamping block 3, the orientation of the inclined abutting surface 32 on the clamping block 3 is different according to different setting positions; specifically, when the clamping block 3 is set on the groove wall of the accommodating groove 211, the first end of the clamping block 3 protrudes into the accommodating groove 211, and the inclined abutting surface 32 on the clamping block 3 faces the outside of the accommodating groove 211. When the connecting piece 4 is pressed from the outside of the accommodating groove 211 to the inside of the accommodating groove 211, the connecting piece 4 can push against the inclined abutting surface 32 and cause the clamping block 3 to deform slightly, so that the connecting piece 4 quickly enters the accommodating groove 211. Then, after the connecting piece 4 detaches from the clamping block 3 to the bottom of it, the clamping block 3 returns to its original shape, confining it to the accommodating groove 211.

[0047] When the clamping blocks 3 are arranged on the opposite sides of the connecting piece 4, the inclined abutting surfaces 32 on the clamping blocks 3 face the inner side of the accommodating groove 211, and the corresponding groove walls of the accommodating groove 211 are provided with a clamping protrusion or a clamping hole, so that when the connecting piece 4 is pressed from the outside of the accommodating groove 211 to the inside of the accommodating groove 211, the inclined abutting surfaces 32 on the clamping blocks 3 abut against the groove walls of the accommodating groove 211 and undergo a slight deformation, so that it can smoothly enter the clamping hole and then return to its original shape to form a limit; or the inclined abutting surfaces 32 on the clamping blocks 3 abut against the groove walls and the clamping protrusions of the accommodating groove 211 and undergo a slight deformation, so that it can smoothly enter the lower part of the clamping protrusion and return to its original shape to form a limit, thereby restricting the connecting piece 4 in the accommodating groove 211.

[0048] like Figure 5 and Figure 6 As shown, in other alternative embodiments, each clamping member includes two of the aforementioned clamping blocks 3. The two clamping blocks 3 can be spaced apart on the slot wall of the receiving slot 211 or on the connecting piece 4, with the inclined abutting surfaces 32 of the two clamping blocks 3 facing each other or facing away from each other. Specifically, the two clamping blocks 3 can be spaced apart longitudinally on the slot wall of the receiving slot 211, in which case the connecting piece 4 can be directly clamped between the two clamping blocks 3. In other alternative embodiments, the two clamping blocks 3 can be spaced apart longitudinally or horizontally on the connecting piece 4. In this case, the slot wall of the receiving slot 211 needs to be provided with a clamping protrusion or a clamping hole, which can be configured differently depending on whether the inclined abutting surfaces 32 of the two clamping blocks 3 face each other or face away from each other. For example, when the inclined abutting surfaces 32 face each other, a clamping protrusion is provided on the slot wall. When the connecting piece 4 is installed, the clamping protrusion abuts the inclined abutting surface 32, and then slides between the two clamping blocks 3 and is restrained by the limiting protrusion 31. When the inclined abutting surfaces 32 are facing away from each other, a clamping hole is provided on the groove wall, so that when the connecting piece 4 is installed, the groove wall abuts against the inclined abutting surface 32, and the two clamping blocks 3 slide into the clamping hole for positioning.

[0049] like Figures 7 to 9 As shown, in some embodiments, the distance between the bottom of the accommodating groove 211 and the upper side surface of the cover body 1 is a, a=0-0.5Hmm, where H is the thickness of the cover body 1; a should not be too large. If a exceeds the above value, the depth of the installation groove 12 will increase, which will cause the strength of the cover body 1 to decrease; and when a is less than the above value, that is, a is a negative number, the bottom surface of the accommodating groove 211 will be higher than the upper side surface of the cover body 1, so that the depth of the installation groove 12 will be reduced, which is not conducive to improving the utilization rate of the space.

[0050] like Figure 3As shown, the composite colloid 2 is also provided with a lower plastic 22, which is also a plate-shaped structure and is located on the lower side of the cover body 1. The lower plastic 22 is also provided with a perforation 23 for the tab to pass through. Since the tab passes through the tab through-hole 11 of the cover body 1, in order to facilitate insulation, the composite colloid 2 is also provided with a connecting plastic. The connecting plastic is annular and surrounds the inner side of the tab through-hole 11. The upper end of the connecting plastic is connected to the upper plastic 21, and the lower end of the connecting plastic is connected to the lower plastic 22. When the tab passes through the tab through-hole 11, the tab is isolated from the cover body 1 to prevent contact between the two. It is understandable that the connecting plastic can be integrally formed with one of the upper plastic 21 or the lower plastic 22, and then connected to the other. Of course, in another embodiment, the connecting plastic, the upper plastic 21 and the lower plastic 22 are integrally formed by injection molding.

[0051] Continue as Figures 7 to 9 As shown, in some embodiments, the upper plastic 21 is further provided with a ring edge 212. When the upper plastic 21 is provided on the upper side of the cover body 1, the ring edge 212 is fixed to the upper side surface of the cover body 1, and the ring edge 212 and the lower plastic 22 clamp the cover body 1; the width of the ring edge 212 is b, b = 1mm-10mm, and if the ring edge 212 is too small, it will easily lead to difficulty in fixing; and if the ring edge 212 is too large, it will lead to an increase in the overall weight, and will also increase the material cost.

[0052] like Figure 1 and Figure 2 As shown, in some embodiments, an explosion-proof valve 5 and a liquid injection port 13 can also be provided on the cover body 1. The explosion-proof valve 5 and the liquid injection port 13 are both existing technologies, and their structures are no longer described in detail. It should be noted that when the explosion-proof valve 5 and the liquid injection port 13 are provided, an explosion-proof valve mounting groove is provided on the cover body 1, and the lower plastic 22 is provided with through holes corresponding to the explosion-proof valve 5 and the liquid injection port 13.

[0053] The present invention also provides a battery, which includes a shell and the above-mentioned cover assembly. The shell has an opening, and the cover assembly is sealed at the opening to form an accommodating space so that the battery cell can be placed in the accommodating space. When the cover assembly is sealed at the opening, the lower side of the cover body 1 faces the inside of the shell, so that the lower plastic 22 can be located inside the shell, and the upper plastic 21 and the connecting piece 4 can be located outside the shell, so that the pole can also be arranged outside the shell, so as to increase the usable space inside the shell and improve space utilization.

[0054] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Cover plate assembly, characterized in that, include: A cover plate body (1), wherein the cover plate body (1) is provided with a tab through hole (11); A combined colloid (2), the combined colloid (2) comprising an upper plastic (21), the upper plastic (21) being arranged on the upper side of the cover plate body (1), the upper plastic (21) being provided with a through hole (23) corresponding to the tab through hole (11); A connecting piece (4), wherein the connecting piece (4) is connected to the upper plastic (21) via a clamping piece, and the clamping piece is arranged on the connecting piece (4) or the upper plastic (21).

2. The cover plate assembly according to claim 1, wherein: The upper plastic (21) is provided with a receiving groove (211), and the connecting piece (4) is clamped in the receiving groove (211) via a clamping piece.

3. The cover plate assembly according to claim 2, wherein: The two clamping parts are located on opposite groove walls of the accommodating groove (211).

4. The cover plate assembly according to claim 2, wherein: The two clamping members are located on opposite sides of the connecting piece (4), and opposite groove walls of the accommodating groove (211) are provided with clamping holes or clamping protrusions, and the clamping members can be clamped with the clamping holes or the clamping protrusions.

5. The cover plate assembly according to claim 2, wherein: Each of the clamping members comprises a clamping block (3), a first end of the clamping block (3) being provided with a limiting protrusion (31), the limiting protrusion (31) being provided with an inclined abutting surface (32), the inclined abutting surface (32) extending from the first end of the clamping block (3) to the second end of the clamping block (3) in a direction gradually away from the clamping block (3).

6. The cover plate assembly according to claim 5, wherein: Each of the clamping members comprises two clamping blocks (3), the two clamping blocks (3) being spaced apart and arranged on the groove wall of the accommodating groove (211) or the connecting piece (4), and the inclined abutting surfaces (32) of the two clamping blocks (3) facing each other or away from each other.

7. The cover plate assembly according to claim 1, wherein: The combined colloid (2) further comprises a lower plastic (22), the lower plastic (22) being arranged on the lower side of the cover plate body (1), and the lower plastic (22) being provided with the through hole (23) corresponding to the tab through hole (11).

8. The cover plate assembly according to claim 2, wherein: A mounting groove (12) is provided on the upper side of the cover body (1), and the upper plastic (21) and the tab through hole (11) are located at the bottom of the mounting groove (12).

9. The cover plate assembly according to claim 8, wherein: The bottom surface of the accommodating groove (211) is not higher than the upper side surface of the cover plate body (1); the distance between the bottom of the accommodating groove (211) and the upper side surface of the cover plate body (1) is a, a=0-0.5Hmm, where H is the thickness of the cover plate body (1).

10. A battery comprising a housing having an opening, wherein: It also includes a cover assembly according to any one of claims 1 to 9, wherein the cover assembly is sealed at the opening to form an accommodating space for accommodating the battery cell, and the lower side of the cover body (1) faces the inside of the shell.

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