Novel gas guide explosion-proof valve

Abstract

The utility model discloses a novel gas guide explosion-proof valve, which relates to the field of explosion-proof valves, and comprises a valve body, a support member is arranged in the valve body, and a pressure relief channel is formed between the support member and the interior of the valve body; the valve cover is movably arranged on the supporting component and covers the pressure relief channel, a pressure relief opening is formed between the valve cover and the valve body, and an air guide structure is arranged on the valve cover so that the direction of the pressure relief opening can be controlled; and the elastic piece is connected between the supporting component and the valve cover. When the internal air pressure of the battery is larger than the external air pressure and reaches a certain degree, gas penetrates through the pressure relief channel to jack up the valve cover, the elastic piece is compressed, the valve cover and the valve body are separated to form the pressure relief opening, so that the gas is discharged through the pressure relief opening, the internal and external pressure difference of the battery is balanced, and normal operation of equipment is guaranteed; due to the fact that the air guide structure is arranged on the valve cover, air can only be exhausted in the set direction, the pressure relief direction can be controlled according to the actual situation, and losses are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof valves, in particular to a novel gas-guided explosion-proof valve. Background Art

[0002] With the popularization and development of new energy vehicle technology, battery safety has received more and more attention.

[0003] The battery contains a large amount of chemical substances. During the operation of the battery, a thermal reaction will occur between the electrolyte and the electrode material to produce gas. The gas accumulates and expands inside the battery. If the internal pressure is not released in time, it will not only seriously affect the battery life, but may even cause the battery to explode.

[0004] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0005] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, a new type of gas-conducting explosion-proof valve is provided, which aims to solve the problem that during the operation of the battery, the electrolyte and the electrode material will react thermally to generate gas, and the gas will accumulate inside the battery and cause the battery to explode.

[0006] The present application provides a new type of gas-guided explosion-proof valve, which adopts the following technical solution:

[0007] A new type of gas-guided explosion-proof valve, comprising:

[0008] A valve body, in which a support member is provided, and a pressure relief passage is formed between the support member and the interior of the valve body;

[0009] A valve cover is movably arranged on the supporting member and covers the pressure relief channel, a pressure relief port is formed between the valve cover and the valve body, and an air guide structure is provided on the valve cover so that the direction of the pressure relief port is controllable;

[0010] An elastic member is connected between the supporting member and the valve cover.

[0011] Further, the valve body is provided with a first sealing groove and a second sealing groove, the first sealing groove is used to place a first sealing member, the second sealing groove is used to place a second sealing member, and a connecting hole is provided between the first sealing groove and the second sealing groove, so that a connection is formed between the first sealing member and the second sealing member;

[0012] The side of the valve body away from the valve cover is set as the first connecting surface, and the side of the valve body close to the valve cover is called the second connecting surface. The first sealing member is located on the first connecting surface and is used to seal the valve body and the battery. The second sealing member is located on the second connecting surface and is used to seal the valve body and the valve cover.

[0013] Furthermore, the first sealing member and the second sealing member are fixedly connected.

[0014] Furthermore, the first sealing member and the second sealing member are movably connected.

[0015] Furthermore, the first sealing component includes a first sealing ring and a U-shaped groove, the second sealing component includes a second sealing ring and a connecting column, the first sealing ring is fixedly connected to the U-shaped groove, the second sealing ring is fixedly connected to the connecting column, the end of the connecting column away from the second sealing ring can be inserted into the U-shaped groove, and the connecting column is adapted to the U-shaped groove.

[0016] Furthermore, the air guide structure includes a fan-shaped piece, and the fan-shaped piece is annularly arranged on the side of the valve cover.

[0017] Further, the valve cover comprises a cover body and a guide rod connected to a side surface of the cover body, the cover body covers the pressure relief channel, and the guide rod is movably arranged on the supporting member;

[0018] One end of the elastic member is fixedly connected to the supporting member, and the other end is fixedly connected to an end of the guide rod away from the cover body.

[0019] Furthermore, the support members are arranged in four groups to form four exhaust passages; guide holes are formed between the support members, and the guide rods are passed through the guide holes.

[0020] Furthermore, a magnetic component is included, and the magnetic component is located between the valve body and the valve cover.

[0021] Furthermore, fixing holes are provided on both sides of the valve cover, and the fixing holes are used to fix the gas-guiding explosion-proof valve on the battery.

[0022] Beneficial effects of the utility model: the present application fixes the gas-guiding explosion-proof valve at the opening of the battery through the valve body, and when the internal air pressure is not greater than the external air pressure, a seal is formed between the gas-guiding explosion-proof valve and the battery, and as the battery continues to operate, gas is gradually generated inside it, causing the internal air pressure of the battery to be greater than the external air pressure, and when it reaches a certain level, the gas passes through the pressure relief channel to lift the valve cover, and under the action of the elastic member, the elastic member is compressed until the valve cover is separated from the valve body to form a pressure relief port, so that the gas is discharged through the pressure relief port, so that the pressure difference between the inside and outside of the battery is balanced, thereby ensuring the normal operation of the equipment. In addition, since the valve cover is provided with a gas-guiding structure, the gas can only be discharged in a set direction, so that the pressure relief direction can be controlled according to actual conditions to reduce losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the overall structure of a new type of gas-guiding explosion-proof valve provided in an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the overall structure of the novel gas-guiding explosion-proof valve provided by an embodiment of the present invention from another perspective.

[0025] Figure 3 It is an exploded view of a novel gas-guiding explosion-proof valve provided in an embodiment of the present invention.

[0026] Figure 4 It is a pressure relief state diagram of the novel gas-guiding explosion-proof valve provided in an embodiment of the present invention.

[0027] Figure 5 It is a gas guide structure diagram of a novel gas guide explosion-proof valve provided in an embodiment of the present invention.

[0028] Figure 6 It is a structural diagram of the first connecting surface of the valve body provided by an embodiment of the present invention.

[0029] Figure 7 It is a structural diagram of the second connecting surface of the valve body provided by an embodiment of the present invention.

[0030] Figure 8 1 is a structural diagram of a valve cover and a sealing member provided in an embodiment of the present invention.

[0031] Fig. 9 It is a first cross-sectional view of the novel gas-guiding explosion-proof valve provided by an embodiment of the present invention.

[0032] Fig.10 It is a second cross-sectional view of the novel gas-guiding explosion-proof valve provided by an embodiment of the present invention.

[0033] Description of the drawings: 1. Valve body; 11. Support member; 12. Pressure relief channel; 13. First sealing groove; 14. Second sealing groove; 15. First sealing member; 151. First sealing ring; 152. U-shaped groove; 16. Second sealing member; 161. Second sealing ring; 162. Connecting column; 17. Connecting hole; 2. Valve cover; 21. Cover body; 22. Guide rod; 221. First guide member; 222. Second guide member; 23. Pressure relief port; 24. Air guide structure; 25. Guide hole; 3. Elastic member; 4. Magnetic member. DETAILED DESCRIPTION

[0034] The present application discloses a novel gas-guided explosion-proof valve. To make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and are not used to limit the present application.

[0035] like Figure 1-4As shown, the embodiment of the present application discloses a novel gas-guided explosion-proof valve, which includes: a valve body 1, a valve cover 2 and an elastic member 3. A support member 11 is provided in the valve body 1, and a pressure relief channel 12 is formed between the support member 11 and the inside of the valve body 1; the valve cover 2 is movably arranged on the support member 11 and covers the pressure relief channel 12, a pressure relief port 23 is formed between the valve cover 2 and the valve body 1, and an gas-guide structure 24 is provided on the valve cover 2, so that the direction of the pressure relief port 23 is controllable; the elastic member 3 is connected between the support member 11 and the valve cover 2.

[0036] In actual use, the battery is usually provided with an explosion-proof valve. When the internal air pressure increases to a certain level, the explosion-proof valve opens, so that the flame, smoke or gas and other combustible materials inside the battery are discharged through the explosion-proof valve. Specifically, the valve body 1 is provided with fixing holes on both sides, and the gas-conducting explosion-proof valve is fixed at the opening of the battery through the fixing holes. When the internal air pressure is not greater than the external air pressure, a seal is formed between the gas-conducting explosion-proof valve and the battery. As the battery continues to operate, gas is gradually generated inside, causing the internal air pressure of the battery to be greater than the external air pressure. When it reaches a certain level, the gas passes through the pressure relief channel 12 to lift the valve cover 2. Under the action of the elastic member 3, the elastic member 3 is compressed until the valve cover 2 is separated from the valve body 1 to form a pressure relief port 23, so that the gas is discharged through the pressure relief port 23, so that the pressure difference between the inside and outside of the battery is balanced, ensuring the normal operation of the equipment. In addition, since the valve cover 2 is provided with a gas-conducting structure 24, the gas can only be discharged in a set direction, so that the pressure relief direction can be controlled according to actual conditions to reduce losses.

[0037] Specifically, Figure 5 As shown, the gas guide structure 24 includes a fan-shaped sheet, which is annularly arranged on the side of the valve cover 2, and the fan-shaped sheet is provided with two sheets. When the valve cover 2 is lifted up, the gas is discharged through the pressure relief port 23, and the fan-shaped sheet blocks the gas flow direction, so the gas can only be exhausted in other directions, so that the exhaust direction is controllable and the loss is reduced.

[0038] In some embodiments, Figure 6-8 As shown, the valve body 1 is provided with a first sealing groove 13 and a second sealing groove 14, the first sealing groove 13 is used to place a first sealing member 15, the second sealing groove 14 is used to place a second sealing member 16, and a connecting hole 17 is provided between the first sealing groove 13 and the second sealing groove 14, so that a connection is formed between the first sealing member 15 and the second sealing member 16; specifically, the side of the valve body 1 away from the valve cover 2 is set as a first connecting surface, and the side of the valve body 1 close to the valve cover 2 is called a second connecting surface, the first sealing member 15 is located on the first connecting surface, and is used to seal the valve body 1 and the battery, and the second sealing member 16 is located on the second connecting surface, and is used to seal the valve body 1 and the valve cover 2.

[0039] During actual use, the first seal 15 is located on the first connecting surface to seal the valve body 1 and the battery, and the second seal 16 is located on the second connecting surface to seal the valve body 1 and the valve cover 2. The first seal 15 and the second seal 16 can isolate external air and water vapor, so that when the internal air pressure of the battery is not greater than the external air pressure, the battery and the gas-conducting explosion-proof valve are in a completely sealed state, preventing external air and water vapor from entering the battery, causing condensation, and leading to safety problems such as equipment insulation failure, short circuit, and fire.

[0040] In some embodiments, Fig. 9 As shown, the first sealing member 15 and the second sealing member 16 are fixedly connected.

[0041] Specifically, the first seal 15 and the second seal 16 can be integrally formed by encapsulation, so that the first seal 15 and the second seal 16 can be firmly placed on the valve body 1 and will not fall off or move easily. Compared with the traditional sealing structure, not only the sealing effect is improved, but also the connection stability is improved. The first seal 15 includes a first sealing ring 151, and the second seal 16 includes a second sealing ring 161 and a connecting column 162. The second sealing ring 161 is fixedly connected to the connecting column 162. The end of the connecting column 162 away from the second sealing ring 161 is fixedly connected to the first sealing ring 151. The first sealing ring 151, the second sealing ring 161 and the connecting column 162 are integrally formed by encapsulation.

[0042] In another embodiment, if Fig.10 As shown, the first seal 15 and the second seal 16 are movably connected. Specifically, the first seal 15 includes a first seal ring 151 and a U-shaped groove 152, and the second seal 16 includes a second seal ring 161 and a connecting column 162. The first seal ring 151 is fixedly connected to the U-shaped groove 152, and the second seal ring 161 is fixedly connected to the connecting column 162. The end of the connecting column 162 away from the second seal ring 161 can be inserted into the U-shaped groove 152, and the connecting column 162 is adapted to the U-shaped groove 152. The second seal 16 is molded by overmolding, and the first seal 15 and the second seal 16 are set to a snap-on mode, which is convenient for assembly, and also improves the connection stability and the sealing effect. In addition, the movable connection mode can also adopt rivet point connection, dovetail groove, R-shaped groove, etc. When plastic material is used, the U-shaped groove 152 on the first seal 15 has a large draft angle, and is connected by a rivet point structure to prevent the second seal 16 from falling off.

[0043] In some embodiments, Figure 8 As shown, combined with Figure 6 or Figure 7 The valve cover 2 includes a cover body 21 and a guide rod 22 connected to the side of the cover body 21. The cover body 21 covers the pressure relief channel 12. The guide rod 22 is movably arranged on the support member 11. One end of the elastic member 3 is fixedly connected to the support member 11, and the other end is fixedly connected to the end of the guide rod 22 away from the cover body 21. The support members 11 are arranged in four groups to form four exhaust channels. Guide holes 25 are formed between the support members 11, and the guide rod 22 is penetrated by the guide holes 25. The guide rod 22 includes a first guide member 221 and a second guide member 222. The first guide member 221 is fixedly connected to the side of the cover body 21, and the second guide member 222 is screwed. The second guide member 222 is hollow and has a weight-reducing effect.

[0044] It can be understood that when a seal is formed between the gas-guiding explosion-proof valve and the battery, the elastic member 3 is in a compressed state, so that the elastic member 3 has a tendency to release elastic potential energy and compresses the valve cover 2 along the direction of the valve body 1, so that the connection between the valve body 1 and the valve cover 2 is tighter, thereby ensuring the sealing.

[0045] When the battery is continuously operating and produces gas, and the internal pressure of the battery is greater than the external pressure to a certain extent, the gas passes through the pressure relief channel 12 to lift the cover 21 upward, and the guide rod 22 slides upward along the guide hole 25. Specifically, the gas exerts an upward pressure on the cover 21, causing the cover 21 to move upward, and then the first guide member 221 drives the second guide member 222 to slide along the guide hole 25, and the distance between the end of the second guide member 222 away from the valve body 1 and the valve body 1 gradually decreases, and the elastic member 3 is continuously compressed, and the cover 21 and the valve body 1 are separated to form a pressure relief port 23, so that the gas is discharged in a directional manner through the pressure relief port 23, so that the pressure difference between the inside and outside of the battery is balanced, ensuring the normal operation of the device. Then, under the action of the elastic member 3, the elastic member 3 is reset, and the second guide member 222 drives the first guide member 221 to slide downward along the guide hole 25, thereby driving the cover 21 to move downward to completely cover the pressure relief channel 12 and form a seal with the valve body 1, and the pressure relief port 23 is closed, and a pressure relief process is completed.

[0046] In some embodiments, Figure 3 and Figure 8 As shown, the air-guided explosion-proof valve also includes a magnetic component 4, which is located between the valve body 1 and the valve cover 2 and fixed on the second connecting surface of the valve body 1. At this time, the valve cover 2 and the guide rod 22 can be set to magnetic materials to realize the function of rapid valve opening of the magnetic tooling.

[0047] Compared with the prior art, the utility model has the following advantages:

[0048] 1. The present application fixes the gas-conducting explosion-proof valve at the opening of the battery through the valve body 1. When the internal air pressure is not greater than the external air pressure, a seal is formed between the gas-conducting explosion-proof valve and the battery. As the battery continues to operate, gas is gradually generated inside, causing the internal air pressure of the battery to be greater than the external air pressure. When it reaches a certain level, the gas passes through the pressure relief channel 12 to lift the valve cover 2. Under the action of the elastic member 3, the elastic member 3 is compressed until the valve cover 2 is separated from the valve body 1 to form a pressure relief port 23, so that the gas is discharged through the pressure relief port 23, so that the pressure difference between the inside and outside of the battery is balanced, ensuring the normal operation of the equipment. In addition, since the valve cover 2 is provided with a gas-conducting structure 24, the gas can only be discharged in a set direction, so that the pressure relief direction can be controlled according to actual conditions to reduce losses.

[0049] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A new type of gas-guided explosion-proof valve, characterized in that: include: A valve body, in which a support member is provided, and a pressure relief passage is formed between the support member and the interior of the valve body; A valve cover is movably arranged on the supporting member and covers the pressure relief channel, a pressure relief port is formed between the valve cover and the valve body, and an air guide structure is provided on the valve cover so that the direction of the pressure relief port is controllable; An elastic member is connected between the supporting member and the valve cover.

2. The novel gas-guided explosion-proof valve according to claim 1 is characterized in that: The valve body is provided with a first sealing groove and a second sealing groove, the first sealing groove is used to place a first sealing member, the second sealing groove is used to place a second sealing member, and a connecting hole is provided between the first sealing groove and the second sealing groove, so that the first sealing member and the second sealing member are connected; The side of the valve body away from the valve cover is set as the first connecting surface, and the side of the valve body close to the valve cover is called the second connecting surface. The first sealing member is located on the first connecting surface and is used to seal the valve body and the battery. The second sealing member is located on the second connecting surface and is used to seal the valve body and the valve cover.

3. The novel gas-guided explosion-proof valve according to claim 2 is characterized in that: The first sealing member and the second sealing member are fixedly connected.

4. The novel gas-guided explosion-proof valve according to claim 2 is characterized in that: The first sealing member is movably connected to the second sealing member.

5. The novel gas-guided explosion-proof valve according to claim 4 is characterized in that: The first sealing component includes a first sealing ring and a U-shaped groove, and the second sealing component includes a second sealing ring and a connecting column. The first sealing ring is fixedly connected to the U-shaped groove, and the second sealing ring is fixedly connected to the connecting column. The end of the connecting column away from the second sealing ring can be inserted into the U-shaped groove, and the connecting column is adapted to the U-shaped groove.

6. The novel gas-guided explosion-proof valve according to claim 1 is characterized in that: The air guide structure comprises a sector-shaped piece, and the sector-shaped piece is annularly arranged on the side surface of the valve cover.

7. The novel gas-guided explosion-proof valve according to claim 1 is characterized in that: The valve cover comprises a cover body and a guide rod connected to a side of the cover body, the cover body covers the pressure relief channel, and the guide rod is movably arranged on the supporting member; One end of the elastic member is fixedly connected to the supporting member, and the other end is fixedly connected to an end of the guide rod away from the cover body.

8. The novel gas-guided explosion-proof valve according to claim 7 is characterized in that: The support members are arranged in four groups to form four exhaust passages; guide holes are formed between the support members, and the guide rods are passed through the guide holes.

9. The novel gas-guided explosion-proof valve according to claim 1 is characterized in that: It also includes a magnetic component, which is located between the valve body and the valve cover.

10. The novel gas-guided explosion-proof valve according to claim 1 is characterized in that: The valve cover is provided with fixing holes on both sides, and the fixing holes are used to fix the gas-guiding explosion-proof valve on the battery.

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