Battery top cover structure and battery monomer

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery top cover structure and a battery monomer, which comprise a top cover sheet, lower plastic and a pole. A clamping groove is formed in the end face of the top cover piece, a buckle assembly is arranged on the end face of the lower plastic, and the lower plastic is attached to the top cover piece so that the buckle assembly can be clamped and hooked in the clamping groove. And the pole sequentially penetrates through the lower plastic and the top cover plate, and is respectively connected with the top cover plate and the lower plastic in a riveting manner. According to the battery top cover structure, the lower plastic and the top cover sheet are not only riveted and connected by the pole, but also clamped and connected by clamping the buckle assembly on the lower plastic into the clamping groove of the top cover sheet, so that the connection strength between the lower plastic and the top cover sheet is increased, and the phenomenon that a gap between the lower plastic and the top cover sheet is too large can be avoided; and the structural strength and the product performance of the battery top cover can be improved. The single battery comprises a battery shell, a battery cell and the battery top cover structure, the battery cell is arranged in the battery shell, and the battery top cover structure is plugged at the opening of the battery shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery top cover structure and battery monomer. BACKGROUND

[0002] With the increasingly mature lithium ion battery technology, lithium ion battery as power battery is widely used in electric vehicles and energy storage fields. The top cover plate of lithium battery includes light aluminum sheet and lower plastic, and the light aluminum sheet needs to be fixed with the lower plastic. In the prior art, the light aluminum sheet and the lower plastic are usually connected by riveting the pole column. However, the lower plastic is only connected with the light aluminum sheet by riveting the pole column, and the connection strength is not high, especially for the long top cover plate, due to the large size of the lower plastic, under the action of gravity, the lower plastic is drooping, which causes the gap between the lower plastic and the light aluminum sheet to be large, affecting the product performance of the top cover plate.

[0003] Therefore, it is urgent to provide a battery top cover structure and battery monomer to solve the above problems. INVENTION CONTENTS

[0004] The first purpose of the utility model is to provide a battery top cover structure with high structural strength and good product performance.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A battery top cover structure comprises:

[0007] A top cover sheet is provided with a clamping groove on one side end face close to the battery cell;

[0008] A lower plastic is provided with a buckle assembly on one side end face away from the battery cell, and the lower plastic is arranged in close contact with the top cover sheet, so that the buckle assembly is hooked in the clamping groove;

[0009] A pole column is sequentially arranged in the lower plastic and the top cover sheet, and the pole column is respectively riveted and connected with the top cover sheet and the lower plastic.

[0010] As an optional technical scheme of the battery top cover structure, the buckle assembly comprises an elastic hook, and an opposite force is applied to the lower plastic and the top cover sheet until the elastic hook is squeezed and clamped into the clamping groove.

[0011] As an optional technical scheme of the battery top cover structure, a plurality of clamping grooves are arranged on the top cover sheet, the buckle assembly comprises a plurality of elastic hooks, and a plurality of clamping grooves correspond to a plurality of elastic hooks one by one.

[0012] As an optional technical scheme of the battery top cover structure, a plurality of clamping grooves are uniformly distributed.

[0013] As an optional technical scheme of the battery top cover structure, the plurality of clamping grooves are arranged in an array.

[0014] As an optional technical scheme of the battery top cover structure, the plurality of clamping grooves are evenly divided into two groups, and the plurality of clamping grooves in each group are arranged uniformly along the length direction of the top cover sheet.

[0015] As an optional technical scheme of the battery top cover structure, each elastic clamping hook comprises a connecting rod and a clamping head, the connecting rod is connected to the lower plastic, and the clamping head is located at the end of the connecting rod and can be clamped into the clamping groove.

[0016] As an optional technical scheme of the battery top cover structure, the two clamping heads of the two elastic clamping hooks in the two groups that are opposite along the width direction of the top cover sheet are arranged away from each other along the width direction of the top cover sheet.

[0017] As an optional technical scheme of the battery top cover structure, the battery top cover structure further comprises a sealing ring, the sealing ring is sleeved on the pole, and the pole is sealingly connected with the top cover sheet and the lower plastic.

[0018] The second purpose of the utility model is to provide a battery monomer, and the product has good performance.

[0019] To achieve the purpose, the utility model adopts the following technical scheme.

[0020] The battery monomer comprises a battery shell, a battery cell and the above-mentioned battery top cover structure, the battery cell is arranged in the battery shell, and the battery top cover structure is blocked at the opening of the battery shell.

[0021] The utility model has the advantages of:

[0022] The battery top cover structure comprises a top cover sheet, a lower plastic and a pole. The end surface of the top cover sheet is provided with a clamping groove, the end surface of the lower plastic is provided with a buckle assembly, the lower plastic is arranged in close contact with the top cover sheet, and the buckle assembly is clamped in the clamping groove. The pole is sequentially arranged in the lower plastic and the top cover sheet, and the pole is riveted and connected with the top cover sheet and the lower plastic, respectively. The pole is riveted to the bottom end surface of the top cover sheet. The lower plastic and the top cover sheet in the battery top cover structure are not only riveted and connected by the pole, but also clamped and connected by the buckle assembly on the lower plastic to the clamping groove of the top cover sheet, thereby increasing the connection strength between the lower plastic and the top cover sheet, avoiding the gap between the lower plastic and the top cover sheet being too large, and improving the structural strength and product performance of the battery top cover.

[0023] The battery cell provided by the utility model comprises a battery shell, a battery core and the above-mentioned battery top cover structure. The battery core is arranged in the battery shell, and the battery top cover structure is sealed at the opening of the battery shell. The structural strength of the battery top cover structure is high, so that the battery cell product has good performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an exploded view of the battery top cover structure provided by an embodiment of the present utility model;

[0025] Figure 2 This is a cross-sectional view of the battery top cover structure provided by the embodiment of the utility model

[0026] Figure 3 This is a schematic diagram of the structure of the lower plastic in the battery top cover structure provided by an embodiment of the present utility model;

[0027] Figure 4 yes Figure 3 Enlarged view at point A;

[0028] Figure 5 It is a structural schematic diagram of the top cover piece in the battery top cover structure provided by an embodiment of the present utility model.

[0029] In the picture:

[0030] 100, top cover; 101, snap-in groove; 200, lower plastic; 310, elastic hook; 312, connecting rod; 311, clamp; 400, pole; 500, sealing ring; 600, upper plastic; 700, aluminum block. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] In the description of this embodiment, the terms "upper," "lower," "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 a specific orientation, 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.

[0035] The battery top cover structure provided in this embodiment has high structural strength and good product performance.

[0036] Specific as Figures 1 to 5 As shown, the battery top cover structure includes a top cover sheet 100, a lower plastic 200, and a terminal 400. A snap-fit ​​groove 101 is provided on the end face of the top cover sheet 100, which is closest to the battery cell. A snap-fit ​​assembly is provided on the end face of the lower plastic 200, which faces away from the battery cell. The lower plastic 200 and the top cover sheet 100 are fitted together, with the snap-fit ​​assembly hooked into the snap-fit ​​groove 101. The terminal 400 passes through the lower plastic 200 and the top cover sheet 100, and is riveted to the top cover sheet 100 and the lower plastic 200, respectively.

[0037] Based on the above design, the pole 400 sequentially penetrates the lower plastic 200 and the top cover 100, and is riveted to the top cover 100 and the lower plastic 200. The pole 400 rivets the lower plastic 200 to the end surface of the top cover 100 near the battery cell (i.e., the bottom end surface of the top cover 100). The lower plastic 200 and the top cover 100 are placed in close contact, and the snap assembly hooks into the snap groove 101, resulting in a simple snap connection and high structural strength. In addition to riveting the lower plastic 200 and the top cover sheet 100 together through the terminal 400, the battery top cover structure also achieves a snap connection between the lower plastic 200 and the top cover sheet 100 by hooking the snap assembly on the lower plastic 200 into the snap groove 101 of the top cover sheet 100. This increases the connection strength between the lower plastic 200 and the top cover sheet 100, avoids excessive gap between the lower plastic 200 and the top cover sheet 100, and thus improves the structural strength and product performance of the battery top cover.

[0038] Optionally, the top cover sheet 100 is an aluminum sheet.

[0039] During the installation of the battery top cover, the lower plastic 200 is first placed on the aluminum sheet near the battery cell (i.e., the bottom of the aluminum sheet), and the buckle assembly is buckled in the clamping groove 101 of the aluminum sheet. Then, the pole 400 is arranged through the lower plastic 200 and the aluminum sheet from the side of the lower plastic 200 near the battery cell, and the lower plastic 200 and the aluminum sheet are connected by riveting and pressing the pole 400.

[0040] In order to facilitate the riveting and pressing of the lower plastic 200 to the aluminum sheet by the pole 400, in this embodiment, the pole 400 includes a column body and a base, the column body is connected with the base, the column body is arranged through the lower plastic 200 and the aluminum sheet from the bottom of the lower plastic 200 in sequence, the side wall of the column body connects the lower plastic 200 and the aluminum sheet, and the base abuts against the end face of the lower plastic 200 near the battery cell, i.e., the bottom of the lower plastic 200.

[0041] Optionally, in order to increase the connection strength of the pole 400, the side wall of the column body is usually welded to connect the lower plastic 200 and the aluminum sheet.

[0042] Further, the buckle assembly includes the elastic buckle 310, which applies a force in the opposite direction to the lower plastic 200 and the top cover sheet 100 until the elastic buckle 310 is squeezed and buckled into the clamping groove 101. By using the elasticity of the elastic buckle 310, the elastic buckle 310 can be elastically squeezed into the clamping groove 101, and the squeezing and installation are simple. Moreover, the elastic buckle 310 is made of elastic material, which has good elasticity and is not easy to break, thereby increasing the connection strength of the lower plastic 200 and the top cover sheet 100, and further increasing the stability of the battery top cover structure. In addition, since the lower plastic 200 has a certain elasticity, the elastic buckle 310 is arranged on the lower plastic 200, the lower plastic 200 and the elastic buckle 310 can be made of the same material, and the assembly and processing of the lower plastic 200 and the elastic buckle 310 are simple.

[0043] Optionally, the lower plastic 200 and the elastic buckle 310 are integrally formed.

[0044] Further, as shown in Figure 3 , Figure 4 and Figure 5 , in order to increase the connection strength of the lower plastic 200 and the top cover sheet 100, the top cover sheet 100 is provided with a plurality of clamping grooves 101, and the buckle assembly includes a plurality of elastic buckles 310, and the plurality of clamping grooves 101 and the plurality of elastic buckles 310 correspond one by one.

[0045] In order to make the connection strength of the lower plastic 200 and the top cover sheet 100 consistent everywhere, the plurality of clamping grooves 101 are uniformly distributed. Of course, the plurality of elastic buckles 310 are also uniformly distributed.

[0046] In the embodiment, the top cover sheet 100 is rectangular, and the plurality of clamping grooves 101 are arranged in an array.

[0047] From the economic point of view, the shape characteristics of the top cover sheet 100, and the structural strength, the plurality of clamping grooves 101 are evenly divided into two groups, and the plurality of clamping grooves 101 in each group are evenly arranged along the length direction of the top cover sheet 100, and the two groups of clamping grooves 101 are located near the two ends of the width direction of the top cover sheet 100. And the clamping grooves 101 are arranged at the peripheral position of the side of the top cover sheet 100 close to the battery cell, avoiding other structures on the battery top cover structure, and further increasing the adhesion of the lower plastic 200 and the top cover sheet 100.

[0048] It should be noted that in other embodiments, the clamping grooves 101 can also extend through the length direction of the top cover sheet 100, and the two clamping grooves 101 are located near the two ends of the width direction of the top cover sheet 100. Each elastic clamping hook 310 extends continuously along the length direction of the lower plastic 200.

[0049] As shown in Figure 4 each elastic clamping hook 310 includes a connecting rod 312 and a clamping head 311, the connecting rod 312 is connected to the lower plastic 200, and the clamping head 311 is located at the end of the connecting rod 312 and can be clamped into the clamping groove 101. The structure of the elastic clamping hook 310 is simple, easy to process, and the clamping head 311 is arranged to clamp into the clamping groove 101, so that the lower plastic 200 and the top cover sheet 100 are connected and installed simply.

[0050] In some embodiments, the clamping heads 311 of the two groups of elastic clamping hooks 310 which are opposite along the width direction of the top cover sheet 100 are arranged opposite to each other along the width direction of the top cover sheet 100.

[0051] In the embodiment, the clamping heads 311 of the two groups of elastic clamping hooks 310 which are opposite along the width direction of the top cover sheet 100 are arranged opposite to each other along the width direction of the top cover sheet 100.

[0052] Of course, in other embodiments, the direction of the clamping head 311 of the elastic clamping hook 310 can be other directions, and the utility model does not make specific limitation on this.

[0053] As shown in Figure 1 and Figure 2 The battery top cover structure further includes a sealing ring 500, the sealing ring 500 is sleeved on the pole 400 and seals the connection between the pole 400 and the top cover sheet 100 and the lower plastic 200.

[0054] The battery top cover structure further includes an upper plastic 600 and an aluminum block 700, the upper plastic 600 and the aluminum block 700 are arranged on the side of the top cover sheet 100 away from the battery cell, and the pole 400 is sequentially arranged through the lower plastic 200, the top cover sheet 100, the upper plastic 600 and the aluminum block 700.

[0055] Further, the upper plastic 600 is wrapped around the outer periphery of the aluminum block 700 to isolate the aluminum block 700 from the top cover sheet 100.

[0056] The upper plastic 600 and the lower plastic 200 are both made of insulating material.

[0057] It should be noted that in the present embodiment, the pole 400 of the battery top cover structure includes a positive pole and a negative pole, and two first mounting holes symmetrically distributed along the length direction of the lower plastic 200 and two second mounting holes symmetrically distributed along the length direction of the top cover sheet 100 are provided, the first mounting holes and the second mounting holes are corresponding, and the positive pole and the negative pole are both sequentially arranged through the corresponding first mounting holes and second mounting holes. Of course, the clamping groove 101 and the buckle assembly both avoid the positions of the positive pole and the negative pole. And a certain number of elastic buckles 310 are distributed between the positive pole and the negative pole 400 to avoid the length of the battery top cover structure being too long, so that the middle part of the lower plastic 200 sags.

[0058] Therefore, the battery top cover structure includes two sealing rings 500, two upper plastics 600 and two aluminum blocks 700. In the present embodiment, the structure and assembly mode of the positive pole and the negative pole are the same, and will not be described here. In other embodiments, the structure and assembly mode of the positive pole and the negative pole can also be different, and can be set according to the use needs.

[0059] An explosion-proof valve is further provided at the middle part of the length direction of the top cover sheet 100 and the lower plastic 200, i.e. before the positive pole and the negative pole.

[0060] Of course, the positions of the elastic buckle 310 and the clamping groove 101 also avoid the position of the explosion-proof valve.

[0061] The battery monomer provided in the present embodiment has good product performance.

[0062] The battery monomer includes a battery shell, a battery cell and the above-mentioned battery top cover structure, the battery cell is arranged in the battery shell, and the battery top cover structure is blocked at the opening of the battery shell.

[0063] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A battery top cover structure, characterized by, The battery top cover structure comprises: a top cover sheet (100) provided with a clamping groove (101) near one side end face of an electric core; a lower plastic (200) provided with a buckle assembly away from one side end face of the electric core, the lower plastic (200) is arranged in close contact with the top cover sheet (100), and the buckle assembly is hooked in the clamping groove (101); a pole (400) sequentially penetrating the lower plastic (200) and the top cover sheet (100), and the pole (400) is respectively riveted and connected with the top cover sheet (100) and the lower plastic (200).

2. The battery cup structure of claim 1, wherein, The buckle assembly comprises an elastic hook (310), and opposite forces are applied to the lower plastic (200) and the top cover sheet (100) until the elastic hook (310) is squeezed and clamped into the clamping groove (101).

3. The battery cup structure of claim 2, wherein, The top cover sheet (100) is provided with a plurality of clamping grooves (101), the buckle assembly comprises a plurality of elastic hooks (310), and the plurality of clamping grooves (101) and the plurality of elastic hooks (310) correspond one by one.

4. The battery cup structure of claim 3, wherein, The plurality of clamping grooves (101) are uniformly distributed.

5. The battery cup structure of claim 4, wherein, The plurality of clamping grooves (101) are arranged in an array.

6. The battery cup structure of claim 5, wherein, The plurality of clamping grooves (101) are divided into two groups on average, the plurality of clamping grooves (101) in each group of clamping grooves (101) are uniformly arranged along the length direction of the top cover sheet (100), and the two groups of clamping grooves (101) are located near the two ends of the width direction of the top cover sheet (100).

7. The battery cup structure of claim 6, wherein, Each elastic hook (310) comprises a connecting rod (312) and a clamping head (311), the connecting rod (312) is connected to the lower plastic (200), and the clamping head (311) is located at the end of the connecting rod (312) and can be clamped into the clamping groove (101).

8. The battery cup structure of claim 7, wherein, Two clamping heads (311) in the two groups of elastic hooks (310) that are opposite to each other along the width direction of the top cover sheet (100) are arranged away from each other along the width direction of the top cover sheet (100).

9. The battery cup structure of claim 1, wherein, The battery top cover structure further comprises a sealing ring (500) sleeved on the pole (400) and sealingly connecting the pole (400) with the top cover sheet (100) and the lower plastic (200).

10. A battery cell, characterized by The battery top cover structure comprises a battery shell, an electric core and the battery top cover structure of any one of claims 1-9, the electric core is arranged in the battery shell, and the battery top cover structure is blocked at the opening of the battery shell.

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