Battery pack pressure release valve cover plate for automobile

Abstract

The utility model discloses a battery pack pressure relief valve cover plate for an automobile, which relates to the technical field of battery pressure relief and comprises a cover body, a through hole used for mounting a pressure relief valve is formed in the cover body, injection molding grooves are symmetrically formed in the cover body, aluminum bushes are fixedly arranged in the injection molding grooves, mounting grooves are formed in the inner side of the cover body, and the aluminum bushes are fixedly arranged in the mounting grooves. Liquid silica gel is fixedly arranged in the mounting groove; a pair of aluminum bushings are placed in a mold, then raw materials are injected, injection molding of other parts except liquid silica gel is achieved, after molding and drying are conducted, the liquid silica gel is pressed in, and then manufacturing of the device can be completed, when the device is installed, an installation groove is aligned with a battery pack pressure release valve installation opening, and bolts are arranged in the aluminum bushings, so that the installation of the device is completed. The stability of the connection between the cover body and the pressure release valve is improved by arranging the liquid silica gel, so that the fixed and sealed connection between the cover body and the pressure release valve body can be realized; opening and closing of the pressure release valve are conveniently achieved in a matched mode.

Description

Technical Field

[0001] This utility model relates to the field of battery pressure relief technology, specifically a pressure relief valve cover for an automotive battery pack. Background Technology

[0002] During the charging or discharging process of a battery pack, internal chemical reactions may produce gas, leading to increased pressure. The pressure relief valve cover can automatically open when the pressure reaches a certain threshold to release excess gas, preventing excessive internal pressure from causing an explosion or leak. It is an important component to ensure the safe and stable operation of the battery.

[0003] The utility model patent with authorization announcement number CN213546508U discloses a pressure relief valve and a battery pack, and specifically discloses a cover plate assembly. The cover plate assembly includes a cover plate that can be opened and closed and is disposed in the exhaust channel at an outlet away from the pressure relief port. The cover plate has a closed state that can be closed to the outlet and an open state that can be opened when the pressure in the pressure relief port is greater than a preset value.

[0004] The pressure relief valve cover plate assembly disclosed above does not have an anti-detachment structure, which may cause the pressure relief valve cover plate assembly to detach from the pressure relief valve when there is high air pressure; and it does not have an internal sealing structure, which may cause the pressure relief valve to leak or have unstable air pressure.

[0005] Therefore, this application provides a pressure relief valve cover for an automotive battery pack. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a pressure relief valve cover for automotive battery packs, which solves the problem that in the prior art, the cover does not have an anti-detachment structure, which leads to the pressure relief valve cover assembly potentially detaching from the pressure relief valve when there is high air pressure, affecting the working stability of the pressure relief valve.

[0007] To achieve the above objectives, this utility model proposes a pressure relief valve cover for an automotive battery pack, comprising a cover body, a through hole for installing a pressure relief valve on the cover body, symmetrically arranged injection grooves on the cover body, an aluminum bushing fixedly installed in the injection groove, and an installation groove on the inner side of the cover body, in which liquid silicone is fixedly installed.

[0008] As a further embodiment of this utility model, an annular protrusion is fixedly provided on the through hole.

[0009] As a further embodiment of this utility model, several limiting plates are fixedly provided around the annular convex edge.

[0010] As a further embodiment of this utility model: the outer side of the cover is provided with an outer contour.

[0011] As a further embodiment of this invention: the outer contour is provided with a chamfer for dispersing stress. As a further embodiment of this invention: the inside of the cover is provided with several support plates.

[0012] As a further embodiment of this utility model, the support plates are symmetrically arranged within the cover body.

[0013] As a further embodiment of this utility model, the liquid silicone is injection molded together with the mounting groove and the cover and then pressed in and fixed.

[0014] As a further embodiment of this invention: the limiting plates are equidistantly arranged on the outer side of the annular convex edge. As a further embodiment of this invention: the support plates are symmetrically distributed on the side of the through hole.

[0015] As a further embodiment of this utility model, a bolt is provided inside the aluminum bushing.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By setting an aluminum bushing and mounting groove, with liquid silicone pressed into the mounting groove, and bolts installed inside the aluminum bushing after the cover is installed, the cover and pressure relief valve are fixedly connected. The aluminum bushing design effectively helps the bolts to be positioned during installation, avoiding damage to the cover during installation. At the same time, aluminum is not only lightweight but also has good corrosion resistance and strength, ensuring the stability and reliability of the bolts during use. Furthermore, the use of the aluminum bushing improves installation accuracy and reduces assembly problems caused by errors. The liquid silicone provides excellent sealing performance, ensuring connection stability and thus ensuring the safety of the battery pack. Liquid silicone has good high and low temperature resistance, maintaining stable performance in extreme temperature environments, suitable for the operating conditions of the battery pack. Simultaneously, liquid silicone has good resistance to many chemicals and is not easily corroded by battery fluids or other chemicals, ensuring long-term reliability.

[0018] 2. By placing a pair of aluminum bushings into the mold and then injecting raw materials, it is possible to injection mold other parts except liquid silicone. After molding and drying, liquid silicone is pressed in to complete the manufacturing of this equipment. During installation, the mounting groove is aligned with the mounting port of the battery pack pressure relief valve. By setting bolts in the aluminum bushings, the cover and pressure relief valve are fixedly connected, thus achieving the fixed installation of the cover. The cover plate of this application is simple to manufacture and easy to install and maintain. Attached Figure Description

[0019] Figure 1 The three-dimensional structure of this utility model Figure 1 ;

[0020] Figure 2 The three-dimensional structure of this utility model Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention after removing the aluminum bushing and liquid silicone. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention after removing the aluminum bushing and liquid silicone. Figure 2 .

[0023] In the diagram: 1. Cover; 2. Annular protrusion; 3. Outer contour; 4. Aluminum bushing; 5. Through hole; 6. Liquid silicone; 7. Mounting groove; 8. Injection groove; 9. Support plate; 10. Limiting plate. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] like Figure 1-4 As shown, a pressure relief valve cover for an automotive battery pack includes a cover body 1 with a through hole 5 for installing a pressure relief valve. An annular protrusion 2 is fixedly provided on the through hole 5, and several limiting plates 10 are fixedly provided around the annular protrusion 2. The limiting plates 10 are equidistantly arranged on the outer side of the annular protrusion 2. The annular protrusion 2 provides a clear positioning surface for the installation of the pressure relief valve, ensuring accurate installation and reducing installation errors. Simultaneously, the installation of the limiting plates 10 increases the structural strength of the annular protrusion 2. The cooperation between the annular protrusion 2 and the limiting plates 10 effectively restricts the movement of the pressure relief valve, ensuring that it will not shift or fall off during use, thereby guaranteeing the safety and reliability of the system.

[0026] As one embodiment of this example, the outer side of the cover 1 is provided with an outer contour 3, and the outer contour 3 is provided with a chamfer. The chamfer design can help to distribute stress evenly and reduce stress concentration, thereby improving the overall strength of the cover 1 and enhancing its pressure resistance; at the same time, it can eliminate sharp edges and reduce the risk of scratches or collisions to personnel during installation or operation.

[0027] In one embodiment of this invention, injection grooves 8 are symmetrically arranged on the cover 1, and aluminum bushings 4 are fixedly installed inside the injection grooves 8. After the cover 1 is installed, bolts are installed inside the aluminum bushings 4 to achieve a fixed connection between the cover 1 and the pressure relief valve. The design of the aluminum bushings 4 can effectively help the bolts to be installed and positioned, avoiding damage to the cover 1 during installation. At the same time, aluminum is not only lightweight, but also has good corrosion resistance and strength, which can ensure the stability and reliability of the bolts during use. In addition, the use of aluminum bushings 4 can also improve the installation accuracy and reduce assembly problems caused by errors. In summary, the installation of aluminum bushings 4 in the cover 1 plays an important role in protection and positioning.

[0028] In one embodiment of this invention, an installation groove 7 is provided on the inner side of the cover 1, and a liquid silicone 6 is fixedly disposed in the installation groove 7. The liquid silicone 6 has excellent sealing performance, which can ensure the stability of the connection and thus ensure the safety of the battery pack. The liquid silicone 6 has good high temperature and low temperature resistance, and can maintain stable performance in extreme temperature environments, making it suitable for the working conditions of the battery pack. At the same time, the liquid silicone 6 has good resistance to many chemicals and is not easily corroded by battery liquid or other chemicals, ensuring long-term reliability.

[0029] As one embodiment of this invention, a plurality of support plates 9 are provided inside the cover 1. The support plates 9 are symmetrically arranged inside the cover 1 and are symmetrically distributed on the side of the through hole 5. The purpose of providing the support plates 9 is to improve the structural strength of the cover 1, increase the stability of the cover 1, and save materials.

[0030] As one embodiment of this invention, orange fuel and flame retardant are added inside the cover 1 to serve as an orange warning and facilitate maintenance by staff. During manufacturing, the aluminum bushing 4 is placed in a mold and injection molded together with the cover 1. After drying, liquid silicone 6 is pressed in to complete the manufacturing of this device.

[0031] Working principle:

[0032] A pair of aluminum bushings 4 are placed into the mold, and then raw materials are injected to injection mold other parts except for liquid silicone 6. After molding and drying, liquid silicone 6 is pressed in to complete the manufacturing of this equipment. During installation, the mounting slot is aligned with the mounting port of the battery pack pressure relief valve. By setting bolts in the aluminum bushings 4, the cover 1 and the pressure relief valve are fixedly connected, and the cover 1 is fixedly installed. When the pressure inside the battery pack reaches a certain threshold, the pressure relief valve drives the cover 1 to open and release excess gas.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A pressure relief valve cover for an automotive battery pack, characterized in that, Includes a cover (1), on which a through hole (5) for installing a pressure relief valve is provided, and injection grooves (8) are symmetrically arranged on the cover (1). An aluminum bushing (4) is fixedly installed in the injection groove (8). An installation groove (7) is provided on the inner side of the cover (1), and liquid silicone (6) is fixedly installed in the installation groove (7).

2. The pressure relief valve cover for an automotive battery pack according to claim 1, characterized in that, An annular protrusion (2) is fixedly provided on the through hole (5).

3. The pressure relief valve cover for an automotive battery pack according to claim 2, characterized in that, Several limiting plates (10) are fixedly provided around the annular convex edge (2).

4. The pressure relief valve cover for an automotive battery pack according to claim 1, characterized in that, The cover (1) has an outer contour (3) on its outer side.

5. The pressure relief valve cover for an automotive battery pack according to claim 4, characterized in that, The outer contour (3) is provided with a chamfer for dispersing stress.

6. The pressure relief valve cover for an automotive battery pack according to claim 1, characterized in that, The cover (1) is provided with several support plates (9).

7. A pressure relief valve cover for an automotive battery pack according to claim 6, characterized in that, The support plate (9) is symmetrically arranged inside the cover (1).

8. The pressure relief valve cover for an automotive battery pack according to claim 3, characterized in that, The limiting plate (10) is equidistantly arranged on the outside of the annular convex edge (2).

9. A pressure relief valve cover for an automotive battery pack according to claim 6, characterized in that, The support plate (9) is symmetrically distributed on the side of the through hole (5).

10. A pressure relief valve cover for an automotive battery pack according to claim 6, characterized in that, Bolts are provided inside the aluminum bushing (4).

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