Lithium battery cover plate and lithium battery

Abstract

The lithium battery cover plate comprises a cover plate body, a liquid injection hole is formed in one end of the cover plate body, a first notch is formed in one end of the cover plate body, a first rectangular block is fixedly connected to one end of the first notch, a second notch is formed in one end of the first rectangular block, and a first round hole is formed in one end of the second notch. And two first circular grooves are formed in one end of each second notch. The beneficial effects are that a second notch is formed in a first rectangular block, so that the placement position of upper plastic cement is determined, the outer wall of a first limiting rod at the bottom end of the upper plastic cement is attached to the inner wall of a first circular groove, and the inner wall of a second circular groove at the bottom end of a terminal is attached to the outer wall of a second limiting rod, so that positioning butt joint is facilitated, and the assembly speed is increased; and when the second rectangular block enters the rectangular hole, the clamping block is stressed to retract, the spring is stressed, and after the second rectangular block drives the clamping block to enter, the stress of the spring is released to push the clamping block to pop out, so that the stability of the cover plate and the lower plastic is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery cover plates, and specifically relates to a lithium battery cover plate and a lithium battery. Background Art

[0002] Lithium batteries have the advantages of small size, high energy density, long service life, and green environmental protection. They are widely used in industries such as automobiles, electronic products, and energy storage systems.

[0003] The lithium battery cover is generally insulated and protected by the lower plastic and bracket. Among them, the square aluminum shell lithium battery refers to a battery formed by placing the battery cell in the aluminum shell and then snapping the lithium battery cover on the aluminum shell. In order to prevent a short circuit between the lithium battery cover body and the battery cell, the lower plastic is installed on the lithium battery cover body, and then the bracket is snapped on the lower plastic.

[0004] The existing lithium battery cover is a split type, that is, a lithium battery cover body includes two sub-brackets, and the two sub-brackets are assembled to form a whole bracket, which has high requirements for positioning accuracy and is difficult to position, affecting the speed of lithium battery production and assembly, and lacks mutual stability between the cover and the lower plastic. Utility Model Content

[0005] The purpose of the utility model is to provide a lithium battery cover and a lithium battery to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery cover plate and a lithium battery, comprising a cover plate, a liquid injection hole is opened at one end of the cover plate, a first notch is opened at one end of the cover plate, a first rectangular block is fixedly connected to one end of the first notch, a second notch is opened at one end of the first rectangular block, a first circular hole is opened at one end of the second notch, two first circular grooves are opened at one end of the second notch, an upper plastic is movably connected to one end of the second notch, two first limit rods are fixedly connected to the bottom end of the upper plastic, two second limit rods are fixedly connected to the top end of the upper plastic, and a frame is fixedly connected to the outer wall of the cover plate.

[0007] Preferably, four rectangular holes are provided at one end of the frame, a second rectangular block is movably connected to the inner wall of the rectangular hole, one end of the second rectangular block is fixedly connected to the lower plastic, third slots are provided on both sides of the second rectangular block, one end of the third slot is fixedly connected to a spring, one end of the spring is fixedly connected to a card block, and the cross-section of the card block is trapezoidal.

[0008] Preferably, the bottom end of the lower plastic is fixedly connected to a bottom plate, one end of the bottom plate is fixedly connected to a pole, a sealing ring is sleeved on the outer wall of the pole, and the outer wall of the pole enters the inner wall of the first circular hole.

[0009] Preferably, a second circular hole is formed at one end of the upper plastic, the outer wall of the first limiting rod is fitted with the inner wall of the first circular groove, a terminal is movably connected to the top end of the upper plastic, a second circular groove is formed at the bottom end of the terminal, the outer wall of the second limiting rod is fitted with the inner wall of the second circular groove, a third circular hole is formed at one end of the terminal, and the third circular hole, the second circular hole and the first circular hole are concentric circles of the same size.

[0010] A lithium battery comprises the lithium battery cover plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model provides a lithium battery cover plate and a lithium battery, wherein a second notch is opened in a first rectangular block, thereby determining the position of the upper plastic, an outer wall of a first limiting rod at the bottom end of the upper plastic fits the inner wall of the first circular groove, and an inner wall of a second circular groove at the bottom end of a terminal fits the outer wall of a second limiting rod, thereby facilitating positioning and docking, and improving assembly speed; when the second rectangular block enters the rectangular hole, the card block is retracted by force, and a spring is stressed; after the second rectangular block enters with the card block, the spring is stressed and released to push the card block to pop out, thereby improving the stability of the cover plate and the lower plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall structure of the utility model from another perspective;

[0015] Figure 3 Schematic diagram of the overall structure of the substrate;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the clamping device;

[0017] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the upper plastic.

[0018] In the figure: 1, cover plate; 2, injection hole; 3, first rectangular block; 4, frame; 5, rectangular hole; 6, lower plastic; 7, second rectangular block; 8, clamping block; 9, bottom plate; 10, pole; 11, sealing ring; 12, first notch; 13, second notch; 14, first circular hole; 15, first circular groove; 16, third notch; 17, spring; 18, second circular hole; 19, upper plastic; 20, first limit rod; 21, second circular groove; 22, second limit rod; 23, terminal; 24, third circular hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1 , Figure 3 and Figure 5 The utility model provides a technical solution: a lithium battery cover, comprising a cover 1, a liquid injection hole 2 is provided at one end of the cover 1, a first notch 12 is provided at one end of the cover 1, a first rectangular block 3 is fixedly connected to one end of the first notch 12, a second notch 13 is provided at one end of the first rectangular block 3, a first circular hole 14 is provided at one end of the second notch 13, two first circular grooves 15 are provided at one end of the second notch 13, an upper plastic 19 is movably connected to one end of the second notch 13, two first limiting rods 20 are fixedly connected to the bottom end of the upper plastic 19, and two second limiting rods are fixedly connected to the top end of the upper plastic 19 22, the outer wall of the cover 1 is fixedly connected with the frame 4; the position of the upper plastic 19 is determined by the second notch 13 opened in the first rectangular block 3, the outer wall of the first limiting rod 20 at the bottom of the upper plastic 19 fits the inner wall of the first circular groove 15, and the inner wall of the second circular groove 21 at the bottom of the terminal 23 fits the outer wall of the second limiting rod 22, which is convenient for positioning and docking, and improves the assembly speed. When the second rectangular block 7 enters the rectangular hole 5, the block 8 is retracted by force, and the spring 17 is stressed. After the second rectangular block 7 enters with the block 8, the spring 17 is released by force to push the block 8 to pop out, thereby improving the stability of the cover 1 and the lower plastic 6.

[0022] Embodiment 2

[0023] See also Figure 2-4 In order to achieve relative stability of the cover plate 1 and the lower plastic 6, four rectangular holes 5 are opened at one end of the frame 4, and the inner wall of the rectangular hole 5 is movably connected with the second rectangular block 7, one end of the second rectangular block 7 is fixedly connected with the lower plastic 6, and third slots 16 are opened on both sides of the second rectangular block 7, one end of the third slot 16 is fixedly connected with a spring 17, and one end of the spring 17 is fixedly connected with a block 8, and the cross section of the block 8 is trapezoidal.

[0024] The lower plastic 6 is pushed to drive the second rectangular block 7 to move. When the second rectangular block 7 enters the rectangular hole 5, the card block 8 is forced to retract and squeeze the spring 17. The spring 17 is forced. When the second rectangular block 7 enters the rectangular hole 5, the spring 17 is forced to release and push the card block 8, and the card block 8 pops out of the card frame 4.

[0025] Embodiment 3

[0026] See also Figure 2 , Figure 3 and Figure 5 In order to achieve a simple positioning effect during the installation process, the bottom end of the lower plastic 6 is fixedly connected to the bottom plate 9, one end of the bottom plate 9 is fixedly connected to the pole 10, the outer wall of the pole 10 is sleeved with a sealing ring 11, the outer wall of the pole 10 enters the inner wall of the first circular hole 14, one end of the upper plastic 19 is provided with a second circular hole 18, the outer wall of the first limiting rod 20 is fitted with the inner wall of the first circular groove 15, the top of the upper plastic 19 is movably connected with a terminal 23, the bottom end of the terminal 23 is provided with a second circular groove 21, the outer wall of the second limiting rod 22 is fitted with the inner wall of the second circular groove 21, and one end of the terminal 23 is provided with a third circular hole 24, the third circular hole 24, the second circular hole 18 and the first circular hole 14 are concentric circles of the same size.

[0027] The bottom end of the upper plastic 19 fits the top of the second notch 13 , the outer wall of the first limiting rod 20 fits the inner wall of the first circular groove 15 , the bottom of the terminal 23 fits the top of the upper plastic 19 , and the outer wall of the second limiting rod 22 fits the inner wall of the second circular groove 21 .

[0028] Embodiment 4

[0029] A lithium battery comprises a lithium battery cover plate.

[0030] The working principle and use process of the utility model are as follows: during installation, the bottom end of the upper plastic 19 is placed at one end of the second notch 13, and the outer wall of the first limiting rod 20 fits with the inner wall of the first circular groove 15 to achieve a simple positioning effect. The bottom end of the terminal 23 fits with one end of the upper plastic 19, and the inner wall of the second circular groove 21 fits with the outer wall of the second limiting rod 22. Then the lower plastic 6 is pushed to drive the bottom plate 9 to move, and the bottom plate 9 drives the pole 10 to move. The pole 10 passes through the first circular hole 14, the second circular hole 18 and the third circular hole 24. At the same time, the lower plastic 6 pushes the second rectangular block 7, and the second rectangular block 7 is forced to move toward the rectangular hole 5. When the second rectangular block 7 enters the rectangular hole 5, due to the trapezoidal cross-section of the card block 8, the card block 8 is squeezed and compressed back by the frame 4, and the card block 8 is forced to squeeze the spring 17. The spring 17 is forced. When the second rectangular block 7 enters the rectangular hole 5, the spring 17 is forced to release and push the card block 8, and the card block 8 is forced to pop out to complete the limit.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery cover plate, comprising a cover plate (1), characterized in that: One end of the cover plate (1) is provided with a liquid injection hole (2), one end of the cover plate (1) is provided with a first notch (12), one end of the first notch (12) is fixedly connected to a first rectangular block (3), one end of the first rectangular block (3) is provided with a second notch (13), one end of the second notch (13) is provided with a first circular hole (14), one end of the second notch (13) is provided with two first circular grooves (15), one end of the second notch (13) is movably connected to an upper plastic (19), the bottom end of the upper plastic (19) is fixedly connected to two first limiting rods (20), the top end of the upper plastic (19) is fixedly connected to two second limiting rods (22), and the outer wall of the cover plate (1) is fixedly connected to a frame (4).

2. A lithium battery cover according to claim 1, characterized in that: One end of the frame (4) is provided with four rectangular holes (5), the inner wall of the rectangular hole (5) is movably connected to a second rectangular block (7), one end of the second rectangular block (7) is fixedly connected to a lower plastic (6), both sides of the second rectangular block (7) are provided with third notches (16), one end of the third notch (16) is fixedly connected to a spring (17), one end of the spring (17) is fixedly connected to a clamping block (8), and the cross section of the clamping block (8) is trapezoidal.

3. A lithium battery cover according to claim 2, characterized in that: The bottom end of the lower plastic (6) is fixedly connected to a bottom plate (9), one end of the bottom plate (9) is fixedly connected to a pole (10), the outer wall of the pole (10) is sleeved with a sealing ring (11), and the outer wall of the pole (10) enters the inner wall of the first circular hole (14).

4. The lithium battery cover according to claim 1, characterized in that: A second circular hole (18) is formed at one end of the upper plastic (19), the outer wall of the first limiting rod (20) is fitted with the inner wall of the first circular groove (15), the top of the upper plastic (19) is movably connected with a terminal (23), the bottom of the terminal (23) is formed with a second circular groove (21), the outer wall of the second limiting rod (22) is fitted with the inner wall of the second circular groove (21), and a third circular hole (24) is formed at one end of the terminal (23), and the third circular hole (24), the second circular hole (18) and the first circular hole (14) are concentric circles of the same size.

5. A lithium battery, characterized in that: A lithium battery cover comprising any one of claims 1 to 4.

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