Firmly-connected battery top cover

Abstract

The utility model discloses a firmly-connected battery top cover, which comprises a stop frame, a top cover plate, a top cover plate, a top cover plate, a top cover plate, a top cover plate, a top cover plate, a top cover plate, a top cover plate and a top cover plate, and is characterized in that the top cover plate is arranged on the stop frame; the anti-explosion valve plate is arranged between the top cover plate and the stop frame so as to relieve the pressure of the gas; the buckling and pressing piece is arranged on the inner side of the mounting hole, and the outer surface of the buckling and pressing piece is sleeved with a sealing ring; the welding ring sleeves the upper end of the outer surface of the buckling piece; according to the cover plate assembly, the base, the ring groove and the turnup are arranged, so that the positive pole and the negative pole press the welding ring to be fixed with the top cover plate through riveting, and then are fixed through welding, the connection firmness and strength and the tight connection relation of the whole cover plate assembly are improved, the contact internal resistance is easily reduced, and the current conduction effect is guaranteed.

Description

Technical Field

[0001] This utility model specifically relates to a battery top cover that is securely connected. Background Technology

[0002] As a core component of new energy vehicles, the performance of power batteries directly affects the safety, range, and lifespan of the entire vehicle. With the rapid development of the electric vehicle market, the demand for power batteries is also increasing. During battery assembly, the battery cover assembly is formed by welding or riveting the terminals with a sealing ring. The main function of the sealing ring is to ensure that the battery interior is not affected by external environmental factors such as moisture and dust.

[0003] When installing the terminals onto the top cover, simple welding or riveting can result in poor connection between the terminals and the cover. Welding may lead to incomplete welds and poor connection tightness, which may affect current conduction later and even cause the terminals to fall off. Riveting also carries the risk of loosening and falling off, making it difficult to ensure a stable connection between the terminals and the top cover and to guarantee the structural strength of the entire cover. Therefore, we propose a battery top cover with a firm connection. Utility Model Content

[0004] The purpose of this invention is to provide a securely connected battery top cover to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a securely connected battery top cover, comprising:

[0006] A stop frame, wherein a top cover plate is provided on the stop frame, and a mounting hole is provided on the inner side of the stop frame;

[0007] An explosion-proof valve plate is installed between the top cover plate and the stop frame to relieve gas pressure;

[0008] A clamping element is disposed inside the mounting hole, and a sealing ring is fitted on the outer surface of the clamping element;

[0009] A welding ring is fitted onto the upper end of the outer surface of the clamping component;

[0010] Positive and negative terminals are disposed inside the clamping member and electrically connected to it, so that the clamping member deforms during riveting to compress the welding ring.

[0011] Preferably, the fastening member includes a base, an annular groove, and a flange. The annular groove is disposed inside the mounting hole, the lower end of the annular groove is integrally formed with a base, and the upper end of the annular groove is flanged outward to form a flange.

[0012] Preferably, the outer diameter of the annular groove is smaller than the diameter of the base.

[0013] Preferably, the cross-sections of the annular groove and the flanging are in the shape of "丿".

[0014] Preferably, there are two welding rings. A positive electrode guide piece is provided on the lower surface of one of the welding rings, and a negative electrode insulating piece is provided on the lower surface of the other welding ring.

[0015] Preferably, there are two positive and negative electrode columns, and the cross-section of the positive and negative electrode columns is in the shape of "T".

[0016] Preferably, the top cover sheet is rectangular, and the mounting hole penetrates through the top cover sheet.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] By providing a base, an annular groove and a flanging, the present utility model avoids the traditional battery cover plate electrode column being fixed with a sealing ring through simple riveting or welding forms, and the overall connection firmness of the cover plate is poor. In this device, first, through riveting, the positive and negative electrode columns press the welding rings to fix with the top cover sheet, and then through welding for fixation, so as to improve the connection firmness strength of the entire cover plate assembly. The tight connection relationship is also conducive to reducing the contact internal resistance and ensuring the current conduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is an exploded structural diagram of the present utility model;

[0021] Figure 3 is a sectional structural diagram of the buckle of the present utility model;

[0022] Figure 4 is a sectional structural diagram of the annular groove of the present utility model.

[0023] In the figure: 1, stop bracket; 2, top cover sheet; 3, explosion-proof valve sheet; 4, welding ring; 5, positive and negative electrode columns; 6, sealing ring; 7, base; 8, annular groove; 9, flanging; 10, positive electrode guide piece; 11, negative electrode insulating piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-4, the present utility model provides a technical solution: a battery top cover with firm connection, including:

[0026] A stop bracket 1, on which a top cover piece 2 is provided, and an installation hole is opened inside the stop bracket 1;

[0027] An explosion-proof valve piece 3, arranged between the top cover piece 2 and the stop bracket 1 to relieve pressure on gas;

[0028] A fastening member, arranged inside the installation hole, and a sealing ring 6 is sleeved on the outer surface of the fastening member, which is convenient to press and fix the welding ring 4 to the top cover piece 2 through the fastening member, thereby sealing the installation hole on the top cover piece 2, and is also convenient for welding and fixing the positive and negative electrode posts 5 later;

[0029] A welding ring 4, sleeved on the upper end of the outer surface of the fastening member;

[0030] Positive and negative electrode posts 5, arranged inside the fastening member and electrically connected to it, and when riveting, the fastening member is deformed to press and fix the welding ring 4, which is convenient to make the positive and negative electrode posts 5 form an integral body with the top cover piece 2 through riveting first by the welding ring 4, and then the fixing firmness effect of the positive and negative electrode posts 5 is improved through welding.

[0031] In this embodiment, preferably, the fastening member includes a base 7, a ring groove 8 and a flanging 9. The ring groove 8 is arranged inside the installation hole, the base 7 is integrally formed at the lower end of the ring groove 8, and the upper end of the ring groove 8 is turned outwards to form the flanging 9, which is convenient to press the positive and negative electrode posts 5 into the inside of the ring groove 8. Then when riveting, the positive and negative electrode posts 5 squeeze the ring groove 8 to form the flanging 9 at the upper end of the ring groove 8, and press and fix the welding ring 4 to the top cover piece 2 to form an integral body.

[0032] In this embodiment, preferably, the outer diameter of the ring groove 8 is smaller than the diameter of the base 7, which is convenient to better extend into the installation hole for assembly.

[0033] In this embodiment, preferably, the cross-section of the ring groove 8 and the flanging 9 is a "丿" shape.

[0034] In this embodiment, preferably, there are two welding rings 4. A positive electrode guide piece 10 is arranged on the lower surface of one welding ring 4, which is convenient for the positive electrode to be electrically connected to the top cover piece 2, and a negative electrode insulating piece 11 is arranged on the lower surface of the other welding ring 4, which is convenient for the negative electrode to be insulated and installed with the top cover piece 2.

[0035] In this embodiment, preferably, there are two positive and negative electrode posts 5, and the cross-section of the positive and negative electrode posts 5 is a "T" shape.

[0036] In this embodiment, preferably, the top cover piece 2 is rectangular, and the installation hole penetrates through the top cover piece 2, which is convenient for the negative electrode to be better electrically connected to the battery cell.

[0037] The working principle and usage process of this utility model are as follows: During use, the positive and negative terminals 5 are pressed into the annular groove 8 under the action of the riveting mold, causing the flange 9 at the upper end of the annular groove 8 to turn outward. Then, the flange 9 presses down on the welding ring 4, thereby fixing the entire top cover 2 onto the stop frame 1. Subsequently, the fastening part and the welding ring 4 are welded together to ensure the strength of the connection with the top cover 2. The fastening part and the positive and negative terminals 5 are welded together to ensure the overall structural strength and reduce the contact internal resistance, thus ensuring the circuit conduction effect.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A securely connected battery top cover, characterized in that, Comprising: A stop frame (1) with a top cover sheet (2) provided thereon, and mounting holes are formed inside the stop frame (1); An explosion-proof valve sheet (3) disposed between the top cover sheet (2) and the stop frame (1) to relieve pressure on the gas; A clamping member disposed inside the mounting hole, and a sealing ring (6) is sleeved on the outer surface of the clamping member; A welding ring (4) sleeved on the upper end of the outer surface of the clamping member; Positive and negative electrode posts (5) disposed inside the clamping member and electrically connected thereto, and when riveting, the clamping member is deformed to press and fix the welding ring (4).

2. The battery top cover with a secure connection according to claim 1, characterized in that: The clamping member includes a base (7), a ring groove (8) and a flanging (9). The ring groove (8) is disposed inside the mounting hole. The base (7) is integrally formed at the lower end of the ring groove (8), and the upper end of the ring groove (8) is flanged outward to form the flanging (9).

3. The battery top cover with a secure connection according to claim 2, characterized in that: The outer diameter of the ring groove (8) is smaller than the diameter of the base (7).

4. A securely connected battery top cover according to claim 2, characterized in that: The cross-section of the ring groove (8) and the flanging (9) is in the shape of "丿".

5. A securely connected battery top cover according to claim 1, characterized in that: There are two welding rings (4). A positive electrode guide sheet (10) is provided on the lower surface of one of the welding rings (4), and a negative electrode insulating sheet (11) is provided on the lower surface of the other welding ring (4).

6. A securely connected battery top cover according to claim 1, characterized in that: There are two positive and negative electrode posts (5), and the cross-section of the positive and negative electrode posts (5) is in the shape of "T".

7. A securely connected battery top cover according to claim 1, characterized in that: The top cover sheet (2) is rectangular, and the mounting hole penetrates through the top cover sheet (2).

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