Battery cover plate structure for improving pole post settlement

Abstract

The utility model discloses a battery cover plate structure that improves pole post subsidence, including cover plate, the top both ends of cover plate symmetry are equipped with the communicating groove, and the communicating groove is connected with the pole post in, and the bottom of cover plate is connected with insulating pad, and the end of insulating pad is located between pole post and cover plate, and the outside of pole post is equipped with annular groove, and the one end of annular groove located pole post outside is provided with the chamfer, and the outside of cover plate top located pole post is provided with plastic, and plastic is connected with pole post and is pasted, and the outside of cover plate bottom located communicating groove is provided with sealing washer, and the bottom of sealing washer is closely pasted with pole post, and this battery cover plate structure is through the mechanical interlocking structure of annular groove of pole post outside and the annular boss of plastic inner wall, and makes PPS plastic and pole post closely pasted with in -mold injection molding process, and the contact area and the bonding strength are increased greatly, can effectively restrain pole post in -use displacement or subsidence, avoids the high and low difference between pole post and cover plate, and promotes structural stability.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a battery cover structure that improves electrode settling. Background Technology

[0002] With the widespread adoption of new energy vehicles, there is a growing trend of them gradually replacing gasoline-powered vehicles. Lithium-ion batteries meet automotive requirements due to their high capacity, long lifespan, and high safety performance. Ensuring the safety performance of structural components hinges on guaranteeing the safety performance of the sealing components. However, traditional structural components struggle to control electrode settlement. Excessive electrode settlement during battery production can lead to insufficient compression of the sealing ring, resulting in poor sealing. Therefore, we propose a battery cover structure to improve electrode settlement. Utility Model Content

[0003] The purpose of this invention is to provide a battery cover structure that improves electrode post settling, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a battery cover structure for improving terminal post settlement, comprising a cover plate, wherein the top two ends of the cover plate are symmetrically provided with connecting grooves, and the connecting grooves are connected to the terminals; an insulating pad is connected to the bottom of the cover plate, the end of the insulating pad is located between the terminal post and the cover plate; an annular groove is provided on the outer side of the terminal post, and the end of the annular groove located outside the terminal post is provided with a chamfer; and plastic is provided on the top of the cover plate outside the terminal post, and the plastic is bonded to the terminal post.

[0005] Preferably, a sealing gasket is provided at the bottom of the cover plate outside the connecting groove, the bottom of the sealing gasket is in close contact with the pole post, and the outer side of the sealing gasket is in contact with the end of the insulating gasket.

[0006] Preferably, the top of the cover plate is integrally provided with an annular protrusion outside the pole, and the bottom of the plastic is provided with an annular groove, and the annular protrusion is engaged in the annular groove at the bottom of the plastic.

[0007] Preferably, the inner wall of the plastic is integrally provided with an annular protrusion, and the annular protrusion is fitted and connected in an annular groove.

[0008] Preferably, the height of the bottom of the insulating pad is less than the height of the bottom of the pole post.

[0009] Preferably, an L-shaped support rod is integrally connected to the bottom end of the insulating pad on one side of the pole post, and the end of the L-shaped support rod is in contact with the bottom of the pole post.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This utility model uses a mechanical interlocking structure between the annular groove on the outer side of the electrode post and the annular protrusion on the inner wall of the plastic, combined with in-mold injection molding process, to make the PPS plastic and the electrode post fit tightly together, which greatly increases the contact area and bonding strength. This can effectively suppress the displacement or settlement of the electrode post during use, avoid the height difference between the electrode post and the cover plate, and improve the structural stability.

[0012] 2. The dual design of the bottom insulating pad and sealing pad in this utility model not only prevents electrical short circuits between the terminal post and the cover plate, but also prevents electrolyte leakage through the tight fit of the sealing pad. The L-shaped support rod of the insulating pad further reinforces the bottom support of the terminal post while maintaining insulation, thereby improving battery safety and durability.

[0013] 3. This utility model adopts in-mold injection molding process to complete the integrated assembly of the pole, seal and cover plate in one go, reducing manual intervention; the snap-fit ​​design of the annular protrusion and the plastic annular groove, as well as the pre-processing of the pole chamfer, ensure that the injection material is filled evenly, avoid stress concentration, reduce the production defect rate and improve the overall structure.

[0014] 4. The electrode post and cover plate of this utility model are connected by plastic to form an elastic buffer. The matching structure of the annular groove and the protrusion disperses the external vibration or impact stress. Combined with the rigid support at the bottom of the L-shaped support rod, the battery can still maintain the stability of the electrode post position under dynamic working conditions, thus extending its service life. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the main view of this utility model;

[0016] Figure 2 This is a schematic diagram of the pole post structure of this utility model;

[0017] Figure 3 This is an enlarged structural diagram of point A of this utility model.

[0018] In the diagram: 1. Cover plate; 2. Pole post; 3. Insulating gasket; 4. Sealing gasket; 5. Plastic; 6. Annular groove; 7. Chamfer; 8. Annular protrusion; 9. Annular protrusion; 10. L-shaped support rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 and Figure 2This utility model provides a technical solution: a battery cover plate structure for improving terminal post settlement, including a cover plate 1, with symmetrical connecting grooves at both ends of the top of the cover plate 1, and a terminal post 2 connected in the connecting grooves; an insulating pad 3 connected to the bottom of the cover plate 1, with the end of the insulating pad 3 located between the terminal post 2 and the cover plate 1; an annular groove 6 provided on the outer side of the terminal post 2, and a chamfer 7 provided at one end of the annular groove 6 outside the terminal post 2; and a plastic 5 provided on the top of the cover plate 1 outside the terminal post 2, with the plastic 5 bonded to the terminal post 2.

[0021] Please see Figure 3 A sealing gasket 4 is provided at the bottom of the cover plate 1 outside the connecting groove. The bottom of the sealing gasket 4 is in close contact with the pole post 2, and the outer side of the sealing gasket 4 is in contact with the end of the insulating gasket 3.

[0022] It should be noted that during the production and processing of this utility model, the pole post 2, sealing gasket 4, insulating gasket 3, and cover plate 1 are first pre-assembled into the injection mold. Finally, the plastic 5 is injected into the gap between the pole post 2 and the cover plate 1 through the in-mold injection molding process. The annular groove 6 in the middle of the pole post 2 is pre-machined with a chamfer 7 by CNC machining. After injection molding, the contact area between the plastic 5 and the pole post 2 is larger. In this way, the cover plate 1 will have almost no height difference when the pole post 2 settles, which can effectively improve the settlement of the pole post 2 and improve the safety performance of the structural components.

[0023] Please see Figure 3 The top of the cover plate 1 is integrally provided with an annular protrusion 9 outside the pole post 2, and the bottom of the plastic 5 is provided with an annular groove, and the annular protrusion 9 is engaged in the annular groove at the bottom of the plastic 5.

[0024] It should be noted that the annular protrusion 9 enhances the stability of the connection between the plastic 5 and the cover plate 1, allowing the plastic 5 to be tightly connected to the cover plate 1 and the pole post 2.

[0025] Please see Figure 3 The inner wall of the plastic 5 is integrally provided with an annular protrusion 8, and the annular protrusion 8 is connected in conjunction with the annular groove 6.

[0026] It should be noted that the terminal post 2 and the cover plate 1 can form an elastic buffer connection through the plastic 5. The matching structure of the annular groove 6 and the annular protrusion 8 can disperse external vibration or impact stress. Combined with the rigid support at the bottom of the L-shaped support rod 10, the battery can still maintain the stable position of the terminal post 2 under dynamic operating conditions, thus extending its service life.

[0027] Please see Figure 1 and Figure 3 The height of the bottom of the insulating pad 3 is less than the height of the bottom of the pole post 2.

[0028] It should be noted that the height of the bottom of the insulating pad 3 is less than the height of the bottom of the pole post 2, which can enhance the stability of the connection between the cover plate 1 and the battery.

[0029] Please see Figure 3 An L-shaped support rod 10 is integrally connected to the bottom end of the insulating pad 3 on one side of the pole post 2, and the end of the L-shaped support rod 10 is in contact with the bottom of the pole post 2.

[0030] It should be noted that the L-shaped support rod 10 can support the terminal post 2. The terminal post 2 and the cover plate 1 are connected by plastic 5 to form an elastic buffer. The matching structure of the annular groove 6 and the annular protrusion 8 disperses external vibration or impact stress, so that the battery can still maintain the stability of the terminal post 2 under dynamic conditions and extend its service life.

[0031] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] 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 battery cover structure for improving electrode post settlement, comprising a cover (1), characterized in that, The top two ends of the cover plate (1) are symmetrically provided with connecting grooves, and the connecting grooves are connected with pole posts (2). The bottom of the cover plate (1) is connected with an insulating pad (3). The end of the insulating pad (3) is located between the pole post (2) and the cover plate (1). The outer side of the pole post (2) is provided with an annular groove (6), and the end of the annular groove (6) located outside the pole post (2) is provided with a chamfer (7). The top of the cover plate (1) is provided with plastic (5) located outside the pole post (2), and the plastic (5) is attached to the pole post (2).

2. The battery cover structure for improving electrode post settlement according to claim 1, characterized in that: The bottom of the cover plate (1) is provided with a sealing gasket (4) outside the connecting groove. The bottom of the sealing gasket (4) is in close contact with the pole post (2), and the outer side of the sealing gasket (4) is in contact with the end of the insulating gasket (3).

3. The battery cover structure for improving electrode post settlement according to claim 1, characterized in that: The top of the cover plate (1) is integrally provided with an annular protrusion (9) outside the pole post (2), and the bottom of the plastic (5) is provided with an annular groove, and the annular protrusion (9) is engaged in the annular groove at the bottom of the plastic (5).

4. The battery cover structure for improving electrode post settlement according to claim 1, characterized in that: The inner wall of the plastic (5) is integrally provided with an annular protrusion (8), and the annular protrusion (8) is connected in conjunction with the annular groove (6).

5. The battery cover structure for improving electrode post settlement according to claim 1, characterized in that: The height of the bottom of the insulating pad (3) is less than the height of the bottom of the pole (2).

6. The battery cover structure for improving electrode post settlement according to claim 1, characterized in that: The insulating pad (3) is integrally connected to an L-shaped support rod (10) at the bottom end on one side of the pole post (2), and the end of the L-shaped support rod (10) is in contact with the bottom of the pole post (2).

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