New energy battery anti-explosion valve

Abstract

The utility model discloses an explosion-proof valve for a new energy battery, which belongs to the technical field of new energy batteries and comprises a fixing seat, an explosion-proof valve body is connected onto the fixing seat, a cavity is arranged on the explosion-proof valve body, and a through hole is arranged on the explosion-proof valve body. Through the arranged end limiting structure, when a reset spring is normally limited, the relative height of a connecting column can be adjusted through a screw rod, so that an adjustable plate moves along a guide column, the compression degree of the reset spring is changed, the set pressure is adjusted, and the device is suitable for emergency exhaust under different pressure conditions; the device is simple in structure and high in use adaptability and flexibility, a screw rod and a limiting plate are convenient to mount and dismount through a movable groove and a limiting groove, meanwhile, due to vertical limiting of the limiting groove and the limiting plate and horizontal limiting of the screw rod and a connecting column after mounting, the situation of horizontal displacement of the screw rod can be avoided, the relative stability of adjustment and use is guaranteed, and the device is convenient to use. The structure is simple and the use effect is excellent.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy battery technical field, especially a new energy battery explosion -proof valve. BACKGROUND

[0002] New energy battery produces a lot of heat when charging and using, leads to the sharp rise of air pressure, and even explodes seriously, therefore installs the explosion -proof valve for aeration on new energy battery. In the existing new energy battery, the reversible explosion -proof valve is used to prevent explosion, and the air is taken in through the explosion -proof valve when the external pressure increases, and the air is exhausted through the explosion -proof valve when the internal pressure is large, and the explosion -proof valve can also exhaust in emergency, thereby increasing the protection effect of the explosion -proof valve.

[0003] In the use of the reversible explosion -proof valve, for the emergency exhaust process, when the internal pressure reaches a certain degree, the whole valve body rises and exhausts through the emergency exhaust hole. When the internal pressure decreases, the reset spring is reset. However, in the existing reversible explosion -proof valve, the reset spring is used to apply elastic force, and the size of the force is fixed and cannot be adjusted according to the actual situation, so that the flexibility and adaptability are poor in use, and the use effect is general. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a new energy battery explosion -proof valve, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A new energy battery explosion -proof valve, comprising a fixed seat, the fixed seat is connected with an explosion -proof valve body, and the explosion -proof valve body is provided with a cavity, the explosion -proof valve body is provided with a through hole, the fixed seat is provided with a circular hole, the lower end of the explosion -proof valve body is provided with a connecting rod, and the inside of the connecting rod is provided with a first piston and a second piston, the second piston is provided with a plug, and the plug is connected to the first piston, the lower end of the connecting rod is provided with an end limit structure, and the connecting rod is provided with a reset spring.

[0007] Preferably, the cavity is in communication with the through hole, and the circular holes are arranged in an annular array on the fixed seat.

[0008] Preferably, the first piston is provided with a first spring, and the lower end of the first spring contacts the end limit structure, the second piston is provided with a second spring, and the upper end of the second spring contacts the explosion -proof valve body.

[0009] Preferably, the fixed seat is provided with a mounting seat in a symmetrical manner, and the mounting seat is provided with a mounting hole.

[0010] Preferably, the end limiting structure comprises an end cover, a movable slot, a limiting slot, a guide column, an adjustable plate, a connecting column, a screw rod, a limiting plate and a knob, the movable slot and the limiting slot are arranged on the end cover, the guide column is fixed on the end cover, the adjustable plate is sleeved on the guide column, the adjustable plate is fixedly connected with the connecting column, and a screw hole is arranged on the connecting column.

[0011] Preferably, the screw rod is fixedly connected with the limiting plate, the limiting plate is located in the limiting slot, the screw rod is located in the movable slot, the upper end of the screw rod is connected with the screw hole on the connecting column, and the knob is fixed on the lower end of the screw rod.

[0012] Compared with the prior art, the new energy battery explosion-proof valve has the following beneficial effects: the end limiting structure is arranged, the relative height of the connecting column can be adjusted by the screw rod when the reset spring is normally limited, the adjustable plate moves along the guide column, the compression degree of the reset spring is changed, the set pressure is adjusted, emergency exhaust is suitable for different pressure conditions, the use adaptability and flexibility are high, the movable slot and the limiting slot are arranged, the screw rod and the limiting plate are convenient to install and disassemble, and after installation, the vertical limiting of the limiting slot and the limiting plate and the horizontal limiting of the screw rod and the connecting column can avoid horizontal displacement of the screw rod, relative stability of adjustment and use is guaranteed, the structure is simple, and the use effect is excellent. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the utility model;

[0014] Figure 2 It is an internal structure schematic view of the utility model;

[0015] Figure 3 It is the utility model Figure 2 It is an enlarged view of A in the utility model;

[0016] Figure 4 It is a structure schematic view of the end limiting structure of the utility model.

[0017] In the drawing: 1, fixed seat; 2, explosion-proof valve main body; 3, cavity; 4, through hole; 5, round hole; 6, connecting rod; 7, first piston; 8, second piston; 9, plug; 10, first spring; 11, second spring; 12, end limiting structure; 1201, end cover; 1202, movable slot; 1203, limiting slot; 1204, guide column; 1205, adjustable plate; 1206, connecting column; 1207, screw rod; 1208, limiting plate; 1209, knob; 13, reset spring; 14, mounting seat; 15, mounting hole. DETAILED DESCRIPTION

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-4 As shown, a new energy battery explosion-proof valve includes a fixed base 1, an explosion-proof valve body 2 connected to the fixed base 1, a cavity 3 on the explosion-proof valve body 2, a through hole 4 on the explosion-proof valve body 2, and a circular hole 5 on the fixed base 1. A connecting rod 6 is provided at the lower end of the explosion-proof valve body 2, and a first piston 7 and a second piston 8 are provided inside the connecting rod 6. A connector 9 is provided on the second piston 8 and is connected to the first piston 7. An end limiting structure 12 is provided at the lower end of the connecting rod 6, and a return spring 13 is sleeved on the connecting rod 6. The cavity 3 communicates with the through hole 4, and the circular holes 5 are arranged in a ring array on the fixed base 1. A first spring 10 is provided on the first piston 7, and the lower end of the first spring 10 contacts the end limiting structure 12. A second spring 11 is provided on the second piston 8, and the upper end of the second spring 11 contacts the explosion-proof valve body 2. Mounting seats 14 are symmetrically arranged on the fixed base 1, and mounting holes 15 are provided on the mounting seats 14.

[0020] When installing the explosion-proof valve for new energy batteries, place the valve in the appropriate position on the battery, and fix the mounting base 1 to the mounting base 1 by passing screws through the mounting holes 15 on the mounting base 14. During the use of the explosion-proof valve, within the operating pressure range, the first piston 7 and the second piston 8 in the explosion-proof valve are in normal condition, and the explosion-proof valve is sealed. When the external pressure increases, gas enters the cavity 3 through the through hole 4 and flows through the gap between the second piston 8 and the inner wall of the connecting rod 6, ultimately acting on the first piston 7. The first piston 7 moves downward under force and compresses the first spring 10. The connector 9 and the first piston 7 are no longer in close contact, and a gap exists. Gas enters the first piston 7 through the gap and finally enters the battery through the end limiting structure 12, achieving the effect of air intake. When the internal pressure increases, the internal gas enters the first piston 7 and applies pressure to the connector 9 and the second piston 8. The second piston 8 rises and compresses the second spring 11. Gas flows through the gap between the two pistons, and then flows through the gap between the second piston 8 and the inner wall of the connecting rod 6 into the cavity 3, and finally exits through the through hole 4, thus achieving the effect of system exhaust. When the internal pressure of the battery suddenly increases to a certain level, a force is applied to the explosion-proof valve body 2 through the round hole 5. The explosion-proof valve body 2 rises and compresses the return spring 13, allowing emergency venting through the round hole 5. After venting is completed, the explosion-proof valve body 2 returns to contact the fixed seat 1 under the action of the return spring 13, thus achieving the sealing effect again.

[0021] By the above-mentioned embodiment, the end limiting structure 12 comprises an end cover 1201, a movable slot 1202, a limiting slot 1203, a guide column 1204, an adjustable plate 1205, a connecting column 1206, a screw rod 1207, a limiting plate 1208 and a knob 1209. The movable slot 1202 and the limiting slot 1203 are formed in the end cover 1201, the guide column 1204 is fixed on the end cover 1201, the adjustable plate 1205 is sleeved on the guide column 1204, and the adjustable plate 1205 is fixedly connected with the connecting column 1206, and a screw hole is formed in the connecting column 1206. The screw rod 1207 is fixedly connected with the limiting plate 1208, the limiting plate 1208 is located in the limiting slot 1203, the screw rod 1207 is located in the movable slot 1202, and the upper end of the screw rod 1207 is connected with the screw hole in the connecting column 1206, and the knob 1209 is fixed on the lower end of the screw rod 1207.

[0022] When the end limiting structure 12 is used, the end cover 1201 is fixed on the lower end of the connecting rod 6. During the emergency exhaust process, the explosion-proof valve body 2 is lifted with the connecting rod 6 and the end limiting structure 12, and the end cover 1201 compresses the reset spring 13 by exerting force on the adjustable plate 1205. If it is necessary to change the emergency exhaust pressure, the screw rod 1207 can be rotated by rotating the knob 1209, and the screw rod 1207 is rotated in the movable slot 1202, thereby exerting force on the connecting column 1206. During this process, the vertical position of the screw rod 1207 does not change due to the limiting action of the limiting plate 1208 and the limiting slot 1203, the connecting column 1206 is lifted and lowered, the adjustable plate 1205 moves along the guide column 1204, and the relative compression degree of the reset spring 13 is changed, thereby achieving the effect of adjusting the emergency exhaust pressure.

[0023] It should be noted that by setting the end limiting structure 12, the relative height of the connecting column 1206 can be adjusted by the screw rod 1207 while normally limiting the reset spring 13, thereby moving the adjustable plate 1205 along the guide column 1204, changing the compression degree of the reset spring 13, and adjusting the set pressure. It is suitable for emergency exhaust under different pressure conditions, has high adaptability and flexibility, and the movable slot 1202 and the limiting slot 1203 are provided, which facilitates the installation and removal of the screw rod 1207 and the limiting plate 1208. After installation, the vertical limiting of the limiting slot 1203 and the limiting plate 1208 and the horizontal limiting of the screw rod 1207 and the connecting column 1206 can avoid the horizontal displacement of the screw rod 1207, thereby ensuring the relative stability of the adjustment and use, and the structure is simple and the use effect is excellent.

[0024] The above description describes the use principle, features and beneficial effects of the utility model. According to the above description, the related personnel in the field can understand that the above description does not limit the utility model, and the above embodiment and description describe the basic principle and features of the utility model, under the premise of meeting the utility model concept, the utility model can also be variously changed and improved, and these improvements should fall within the scope of the utility model claimed to be protected.

Claims

1. A new energy battery explosion-proof valve, comprising a fixed base (1), wherein an explosion-proof valve body (2) is connected to the fixed base (1), and the explosion-proof valve body (2) is provided with a cavity (3), the explosion-proof valve body (2) is provided with a through hole (4), and the fixed base (1) is provided with a circular hole (5), characterized in that: The lower end of the explosion-proof valve body (2) is provided with a connecting rod (6), and the inside of the connecting rod (6) is provided with a first piston (7) and a second piston (8), the second piston (8) is provided with a plug (9), and the plug (9) is connected to the first piston (7), the lower end of the connecting rod (6) is provided with an end limiting structure (12), and the connecting rod (6) is provided with a reset spring (13).

2. The explosion-proof valve of a new energy battery according to claim 1, characterized in that: The cavity (3) is communicated with the through hole (4), and the circular holes (5) are arranged in an annular array on the fixed seat (1).

3. The explosion-proof valve of a new energy battery according to claim 2, characterized in that: The first piston (7) is provided with a first spring (10), and the lower end of the first spring (10) contacts the end limiting structure (12), the second piston (8) is provided with a second spring (11), and the upper end of the second spring (11) contacts the explosion-proof valve body (2).

4. The explosion-proof valve of a new energy battery according to claim 3, characterized in that: The fixed seat (1) is provided with a mounting seat (14) symmetrically, and the mounting seat (14) is provided with a mounting hole (15).

5. The explosion-proof valve of a new energy battery according to claim 4, characterized in that: The end limiting structure (12) comprises an end cover (1201), a movable groove (1202), a limiting groove (1203), a guide column (1204), an adjustable plate (1205), a connecting column (1206), a screw rod (1207), a limiting plate (1208) and a knob (1209), the movable groove (1202) and the limiting groove (1203) are arranged on the end cover (1201), the guide column (1204) is fixed on the end cover (1201), the adjustable plate (1205) is sleeved on the guide column (1204), and the adjustable plate (1205) is fixedly connected with the connecting column (1206), and the connecting column (1206) is provided with a screw hole.

6. The explosion-proof valve of a new energy battery according to claim 5, characterized in that: The screw rod (1207) is fixedly connected with the limiting plate (1208), and the limiting plate (1208) is located in the limiting groove (1203), the screw rod (1207) is located in the movable groove (1202), and the upper end of the screw rod (1207) is connected with the screw hole in the connecting column (1206), and the knob (1209) is fixedly connected with the lower end of the screw rod (1207).

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