Bidirectional explosion-proof valve, battery assembly and electric device

Abstract

The utility model relates to a two-way anti-explosion valve, a battery assembly and an electric device, the two-way anti-explosion valve comprises a valve body, the valve body is provided with a top groove used for being communicated with external gas, and the bottom of the top groove is provided with a gas inlet channel and a gas exhaust channel; the air inlet assembly is mounted in the air inlet channel, and the air inlet assembly is used for opening or closing the air inlet channel under the action of air pressure; and the exhaust assembly is installed in the exhaust channel and used for opening or closing the exhaust channel under the action of air pressure. The air inlet channel and the air outlet channel are both independent air channels, the air inlet assembly independently controls opening and closing of the air inlet channel, the air outlet assembly independently controls opening and closing of the air outlet channel, and the air inlet channel and the air outlet channel are correspondingly arranged, so that the two-way anti-explosion valve can be independently assembled in the assembling process, and the assembling precision requirement of the two-way anti-explosion valve is lowered; and when the air inlet assembly or the exhaust assembly is damaged and needs to be maintained, the air inlet assembly or the exhaust assembly can be independently maintained and replaced, and therefore the practicability of the two-way anti-explosion valve is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of power batteries, and more specifically, to a two-way explosion-proof valve, a battery assembly, and an electrical device. Background Art

[0002] The safe and reliable operation of the core components of the electric vehicle power system, such as the battery PACK, electronic control, and motor, is crucial. To ensure its safe and stable operation, it needs to be waterproof and dustproof, that is, in theory it needs to be sealed. However, in a sealed state, once the power battery short-circuits and thermally runs away, it will produce a large amount of high-temperature mixed gas containing solid or colloidal substances. If it cannot be discharged in time, violent fires and explosions will usually occur, causing heavy casualties and property losses. Therefore, the current existing technical solution is to install a waterproof, breathable, explosion-proof balancing valve (commonly known as an explosion-proof valve) on the battery pack box to meet the waterproof and explosion-proof requirements of the power battery system.

[0003] Among them, the use of two-way explosion-proof valves is more common. The existing two-way explosion-proof valves are installed in a box to achieve waterproof and explosion-proof. They mainly include a valve body and a two-way valve. In addition to airflow exchange in the channel of the valve body through a two-way valve, airflow exchange also depends on the channel in the internal structure of the two-way valve, that is, the two-way valve also needs to include an airflow exchange structure, resulting in high assembly accuracy requirements. If the two-way valve is damaged, the entire valve needs to be repaired and replaced, and its practicality needs to be further improved. Utility Model Content

[0004] In order to overcome the problem that the practicality described in the above background technology needs to be further improved, the present application provides a two-way explosion-proof valve, a battery assembly and an electrical device.

[0005] In order to solve the above technical problems, the technical solution adopted in this application is:

[0006] A two-way explosion-proof valve, comprising:

[0007] A valve body, wherein the valve body is provided with a top groove for communicating with external gas, and the top groove is provided with an air intake channel and an air exhaust channel respectively;

[0008] An air intake assembly, installed in the air intake passage, and used to open or close the air intake passage under the action of air pressure;

[0009] The exhaust assembly is installed in the exhaust passage and is used to open or close the exhaust passage under the action of air pressure.

[0010] In one embodiment, the air intake assembly and the air exhaust assembly are staggered or arranged in parallel.

[0011] In one embodiment, the air intake assembly includes an air intake unit, and an end of the air intake unit away from the top groove opens or closes the air intake channel under the action of air pressure, and an air intake elastic member is clamped between an end of the air intake unit close to the top groove and a side wall of the air intake channel, so that the air intake unit normally closes the air intake channel; and / or

[0012] The exhaust assembly includes an exhaust unit, and the exhaust unit opens or closes the exhaust channel under the action of air pressure at one end close to the top groove. An exhaust elastic member is clamped between the end of the exhaust unit away from the top groove and the side wall of the exhaust channel so that the exhaust unit closes the exhaust channel under normal conditions.

[0013] In one embodiment, the air intake assembly and the exhaust assembly are staggered vertically:

[0014] The exhaust unit is arranged close to the top groove, and a connecting rod is arranged at one end of the exhaust unit close to the top groove, and the connecting rod protrudes from the valve body; or

[0015] The air intake unit is arranged close to the top groove, and a connecting rod is arranged at one end of the air intake unit close to the top groove, and the connecting rod protrudes from the valve body.

[0016] In one embodiment, the air intake unit includes an air intake limit plate and an air intake piston, an air intake seat is provided on the side wall of the air intake channel, one end of the air intake limit plate movably closes or opens the air intake channel, the other end of the air intake limit plate passes through the air intake seat and is connected to the air intake piston, and the air intake elastic member is clamped between the air intake piston and the air intake seat; and / or

[0017] The exhaust unit includes an exhaust limit plate and an exhaust piston. An exhaust seat is provided on the side wall of the exhaust channel. One end of the exhaust limit plate is movably closed or opened to close the exhaust channel. The other end of the exhaust limit plate passes through the exhaust seat and is connected to the exhaust piston. The exhaust elastic member is clamped between the exhaust piston and the exhaust seat.

[0018] In one embodiment, the outer surface of the air intake seat is connected to the side wall of the air intake passage, the air intake limit plate movably blocks the air intake seat, and an air intake sealing ring is provided between the air intake limit plate and the air intake seat; and / or

[0019] The outer surface of the exhaust seat is connected to the side wall of the exhaust channel, the exhaust limit plate movably blocks the exhaust seat, and an exhaust sealing ring is arranged between the exhaust limit plate and the exhaust seat.

[0020] In one embodiment, a mounting groove is provided on the side wall of the top groove, a cover body is installed on the side wall of the mounting groove, and air holes are provided on the cover body or a gap is provided between the cover body and the mounting groove.

[0021] In one embodiment, a bottom groove for communicating with the outside of the explosion-proof valve is formed on the valve body, and the bottom groove is communicated with the air intake channel and the exhaust channel respectively.

[0022] A battery assembly comprises the two-way explosion-proof valve described in any of the above embodiments, and also comprises a battery and a box body, wherein the battery is installed in the box body, and the two-way explosion-proof valve is penetrated on the box body to connect the inner and outer sides of the box body.

[0023] An electrical device comprises the battery assembly for providing electrical energy as described in the previous embodiment.

[0024] Compared with the prior art, the beneficial effect is: because the air intake channel and the exhaust channel are both separate air channels, and the air intake component independently controls the switch of the air intake channel, and the exhaust component independently controls the switch of the exhaust channel, and they are respectively set correspondingly, so that the two-way explosion-proof valve can be assembled separately during assembly, thereby reducing its assembly accuracy requirements, and when the air intake component or the exhaust component is damaged and needs to be repaired, it can be repaired and replaced separately, thereby effectively increasing the practicality of the two-way explosion-proof valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the three-dimensional structure of a two-way explosion-proof valve according to an embodiment of the present application;

[0026] Figure 2 is a schematic diagram of the three-dimensional structure of a two-way explosion-proof valve according to an embodiment of the present application;

[0027] Figure 3 is a schematic cross-sectional structural diagram of a two-way explosion-proof valve in an air intake state according to an embodiment of the present application;

[0028] Figure 4 is a schematic cross-sectional structural diagram of a two-way explosion-proof valve in an exhaust state according to an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of the exploded structure of a two-way explosion-proof valve according to an embodiment of the present application;

[0030] Figure 6 It is a cross-sectional structural schematic diagram of the air intake state of the two-way explosion-proof valve in the box body of the embodiment of the present application;

[0031] Figure 7 It is a schematic cross-sectional structure diagram of the exhaust state of the two-way explosion-proof valve in the box body of the embodiment of the present application.

[0032] 10. Two-way explosion-proof valve; 20. Box body; 100. Valve body; 110. Top groove; 120. Bottom groove; 130. Inlet channel; 131. Inlet seat; 140. Exhaust channel; 141. Exhaust seat; 150. Abutment sealing ring; 200. Inlet assembly; 210. Inlet unit; 211. Inlet limit plate; 212. Inlet piston; 220. Inlet elastic part; 300. Exhaust assembly; 310. Exhaust unit; 311. Exhaust limit plate; 312. Exhaust piston; 320. Exhaust elastic part; 400. Connecting rod; 500. Inlet sealing ring; 600. Exhaust sealing ring; 700. Cover body; 710. Air hole. DETAILED DESCRIPTION

[0033] The technical solution of the present application is further described in detail below through specific embodiments and in combination with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0034] Example 1

[0035] like Figures 1 to 5 As shown, in this embodiment, a two-way explosion-proof valve includes: a valve body 100, the valve body 100 is provided with a top groove 110 for connecting to external gas, and the bottom of the top groove 110 is respectively provided with an intake channel 130 and an exhaust channel 140; an intake component 200, installed in the intake channel 130, the intake component 200 is used to open or close the intake channel 130 under the action of air pressure; an exhaust component 300, installed in the exhaust channel 140, the exhaust component 300 is used to open or close the exhaust channel 140 under the action of air pressure.

[0036] Specifically, a top groove 110 is provided at the top of the valve body 100, and when the valve body 100 is installed and used, the top end is located in the outside atmosphere, and the bottom end is located in the box body 20, and the air intake channel 130 and the exhaust channel 140 in the valve body 100 are used to exchange the internal and external gases. The outer surface of the air intake component 200 is connected to the side wall of the air intake channel 130. The outer surface of the exhaust component 300 is connected to the side wall of the exhaust channel 140. When the air pressure inside and outside the box body 20 is balanced, the air intake component 200 and the exhaust component 300 seal the gas in the box body 20; when the air pressure inside the box body 20 is less than the external air pressure, the reference Figure 3 , the air intake assembly 200 opens the air intake passage 130 to balance the internal and external pressure difference, and the exhaust assembly 300 keeps the air intake passage 130 closed. When the internal air pressure of the box body 20 is greater than the external air pressure, Figure 4 , the exhaust assembly 300 opens the exhaust passage 140 to balance the internal and external pressure differences, and the intake assembly 200 keeps the intake passage 130 closed;

[0037] It is worth noting that since the air intake passage 130 and the exhaust passage 140 are both separate air passages, and the air intake component 200 independently controls the switch of the air intake passage 130, and the exhaust component 300 independently controls the switch of the exhaust passage 140, and they are respectively set accordingly, the two-way explosion-proof valve 10 can be assembled separately during assembly, thereby reducing its assembly accuracy requirements, and when the air intake component 200 or the exhaust component 300 is damaged and needs to be repaired, it can be repaired and replaced separately, thereby effectively increasing the practicality of the two-way explosion-proof valve 10.

[0038] In order to facilitate the layout and installation of the two-way explosion-proof valve 10, in one embodiment, the air intake assembly 200 and the exhaust assembly 300 are staggered or arranged in parallel.

[0039] The air intake assembly 200 and the exhaust assembly 300 are arranged according to actual production conditions. For example, the air intake assembly 200 and the exhaust assembly 300 are arranged staggered with each other, and the air intake channel 130 and the exhaust channel 140 are arranged correspondingly. For another example, the air intake assembly 200 and the exhaust assembly 300 are arranged in parallel with each other, and the air intake channel 130 and the exhaust channel 140 are arranged correspondingly.

[0040] In order to facilitate the use of the air intake assembly 200 or the exhaust assembly 300, as Figure 3 and Figure 4 As shown, in one embodiment, the air intake component 200 includes an air intake unit 210, and the end of the air intake unit 210 away from the top groove 110 opens or closes the air intake channel 130 under the action of air pressure, and an air intake elastic member 220 is clamped between the end of the air intake unit 210 close to the top groove 110 and the side wall of the air intake channel 130, so that the air intake unit 210 normally closes the air intake channel 130; and / or the exhaust component 300 includes an exhaust unit 310, and the end of the exhaust unit 310 close to the top groove 110 opens or closes the exhaust channel 140 under the action of air pressure, and an exhaust elastic member 320 is clamped between the end of the exhaust unit 310 away from the top groove 110 and the side wall of the exhaust channel 140, so that the exhaust unit 310 normally closes the exhaust channel 140.

[0041] Specifically, the specific structures of the air intake assembly 200 and the exhaust assembly 300 are set according to actual production conditions:

[0042] For example, the air intake component 200 includes an air intake unit 210, and the end of the air intake unit 210 away from the top groove 110 opens or closes the air intake channel 130 under the action of air pressure, and an air intake elastic member 220 is clamped between the end of the air intake unit 210 close to the top groove 110 and the side wall of the air intake channel 130, so that the air intake unit 210 can normally close the air intake channel 130; and the exhaust component 300 includes an exhaust unit 310, and the end of the exhaust unit 310 close to the top groove 110 opens or closes the exhaust channel 140 under the action of air pressure, and an exhaust elastic member 320 is clamped between the end of the exhaust unit 310 away from the top groove 110 and the side wall of the exhaust channel 140, so that the exhaust unit 310 can normally close the exhaust channel 140.

[0043] In this way, the bottom end of the air intake unit 210 opens or closes the air intake channel 130 under the action of air pressure, and there is a gap between the part above the bottom end of the air intake unit 210 and the side wall of the air intake channel 130 to circulate gas. An air intake elastic member 220 is arranged between the top end of the air intake unit 210 and the side wall of the air intake channel 130, which can ensure that the air intake unit 210 closes the air intake channel 130 under normal circumstances. When air intake is needed, the bottom end of the air intake unit 210 opens the air intake channel 130 under the action of air pressure and compresses the air intake elastic member 220. The top of the exhaust unit 310 opens or closes the exhaust channel 140 under the action of air pressure. There is a gap between the portion below the top of the exhaust unit 310 and the side wall of the exhaust channel 140 to allow gas to flow. An exhaust elastic member 320 is provided between the bottom of the exhaust unit 310 and the side wall of the exhaust channel 140 to ensure that the exhaust unit 310 closes the exhaust channel 140 under normal conditions. When exhaust is required, the top of the exhaust unit 310 opens the exhaust channel 140 under the action of air pressure and compresses the exhaust elastic member 320. The air intake elastic member 220 and the exhaust elastic member 320 are configured as springs.

[0044] For another example, the air intake assembly 200 includes an air intake unit 210, and one end of the air intake unit 210 away from the top groove 110 opens or closes the air intake channel 130 under the action of air pressure. An air intake elastic member 220 is clamped between one end of the air intake unit 210 close to the top groove 110 and the side wall of the air intake channel 130, so that the air intake unit 210 closes the air intake channel 130 under normal conditions.

[0045] For another example, the exhaust assembly 300 includes an exhaust unit 310, and one end of the exhaust unit 310 close to the top groove 110 opens or closes the exhaust channel 140 under the action of air pressure. An exhaust elastic member 320 is clamped between the end of the exhaust unit 310 away from the top groove 110 and the side wall of the exhaust channel 140, so that the exhaust unit 310 closes the exhaust channel 140 under normal conditions.

[0046] To facilitate the layout of the air intake assembly and the exhaust assembly, in one embodiment, the air intake assembly 200 and the exhaust assembly 300 are staggered up and down: the exhaust unit 310 is arranged close to the top groove 110, and a connecting rod 400 is arranged at one end of the exhaust unit 310 close to the top groove 110, and the connecting rod 400 protrudes from the valve body 100; or the air intake unit 210 is arranged close to the top groove 110, and a connecting rod 400 is arranged at one end of the air intake unit 210 close to the top groove 110, and the connecting rod 400 protrudes from the valve body 100.

[0047] Specifically, the specific arrangement of the air intake assembly 200 and the exhaust assembly 300 in an up-and-down staggered manner is arranged according to actual production conditions:

[0048] For example, refer to Figure 3 and Figure 4 As shown, the exhaust unit 310 is arranged near the top groove 110, and a connecting rod 400 is arranged at one end of the exhaust unit 310 near the top groove 110, and the connecting rod 400 protrudes from the valve body 100, and the exhaust assembly 300 is arranged in the top end of the valve body 100, and the air intake assembly 200 is arranged in the lower end of the valve body 100. In this way, the top width of the air intake channel 130 is smaller than the bottom width, and the top width of the exhaust channel 140 is larger than the bottom width, and by arranging the connecting rod 400 at the top of the exhaust unit 310, the connecting rod 400 protrudes from the top surface of the valve body 100, so that the exhaust unit 310 can be manually pulled up for exhaust, thereby increasing the practicality of the two-way explosion-proof valve 10.

[0049] For another example, the air intake unit 210 is arranged near the top groove 110, and a connecting rod 400 is arranged at one end of the air intake unit 210 near the top groove 110, and the connecting rod 400 is arranged protruding from the valve body 100. In this way, the air intake component 200 is arranged in the top end of the valve body 100, and the exhaust component 300 is arranged in the lower end of the valve body 100. The top width of the air intake channel 130 is greater than the bottom width, and the top width of the exhaust channel 140 is less than the bottom width. In addition, by arranging the connecting rod 400 at the top of the air intake unit 210, and the connecting rod 400 protruding from the top surface of the valve body 100, the air intake unit 210 can be manually pressed down to intake air, thereby increasing the practicality of the two-way explosion-proof valve 10.

[0050] In order to facilitate the use of the air intake unit 210 and the exhaust unit 310, as shown in FIG. Figures 3 to 5As shown, in one embodiment, the intake unit 210 includes an intake limit plate 211 and an intake piston 212, an intake seat 131 is provided on the side wall of the intake channel 130, one end of the intake limit plate 211 is movably closed or opened, the other end of the intake limit plate 211 passes through the intake seat 131 and is connected to the intake piston 212, and the intake elastic member 220 is clamped between the intake piston 212 and the intake seat 131; and / or the exhaust unit 310 includes an exhaust limit plate 311 and an exhaust piston 312, an exhaust seat 141 is provided on the side wall of the exhaust channel 140, one end of the exhaust limit plate 311 is movably closed or opened, the other end of the exhaust limit plate 311 passes through the exhaust seat 141 and is connected to the exhaust piston 312, and the exhaust elastic member 320 is clamped between the exhaust piston 312 and the exhaust seat 141.

[0051] Specifically, the specific structures of the air intake assembly 200 and the exhaust assembly 300 are set according to actual production conditions:

[0052] For example, the intake unit 210 includes an intake limit plate 211 and an intake piston 212, an intake seat 131 is provided on the side wall of the intake channel 130, one end of the intake limit plate 211 is movably closed or opened for closing the intake channel 130, the other end of the intake limit plate 211 is connected to the intake piston 212 through the intake seat 131, and the intake elastic member 220 is clamped between the intake piston 212 and the intake seat 131; and the exhaust unit 310 includes an exhaust limit plate 311 and an exhaust piston 312, an exhaust seat 141 is provided on the side wall of the exhaust channel 140, one end of the exhaust limit plate 311 is movably closed or opened for closing the exhaust channel 140, the other end of the exhaust limit plate 311 is connected to the exhaust piston 312 through the exhaust seat 141, and the exhaust elastic member 320 is clamped between the exhaust piston 312 and the exhaust seat 141.

[0053] In this way, the air intake limit plate 211 is used to open or close the air intake channel 130 under the action of air pressure, and the bottom end of the air intake limit plate 211 closes the air intake channel 130 under normal conditions, and the top end of the air intake limit plate 211 and the side wall of the air intake seat 131 are arranged to circulate gas, and the top end of the air intake limit plate 211 passes through the air intake seat 131 and is connected to the air intake piston 212, so that the air intake elastic member 220 can be located between the air intake piston 212 and the air intake seat 131, so that the air intake limit plate 211 closes the air intake channel 130 under normal conditions through the elastic action of the air intake elastic member 220. 0; The exhaust limit plate 311 is used to open or close the exhaust channel 140 under the action of air pressure, and the top of the exhaust limit plate 311 closes the exhaust channel 140 under normal conditions, and the bottom end of the exhaust limit plate 311 and the side wall of the exhaust seat 141 are spaced apart from each other to circulate gas, and the bottom end of the exhaust limit plate 311 passes through the exhaust seat 141 and is connected to the exhaust piston 312, so that the exhaust elastic member 320 can be located between the exhaust piston 312 and the exhaust seat 141, so that the exhaust limit plate 311 can close the exhaust channel 140 under normal conditions through the elastic action of the exhaust elastic member 320.

[0054] For another example, the air intake unit 210 includes an air intake limit plate 211 and an air intake piston 212. An air intake seat 131 is provided on the side wall of the air intake channel 130. One end of the air intake limit plate 211 can be movably closed or opened for the air intake channel 130. The other end of the air intake limit plate 211 passes through the air intake seat 131 and is connected to the air intake piston 212. The air intake elastic member 220 is clamped between the air intake piston 212 and the air intake seat 131.

[0055] For another example, the exhaust unit 310 includes an exhaust limit plate 311 and an exhaust piston 312. An exhaust seat 141 is provided on the side wall of the exhaust channel 140. One end of the exhaust limit plate 311 is movably closed or opened for the exhaust channel 140. The other end of the exhaust limit plate 311 passes through the exhaust seat 141 and is connected to the exhaust piston 312. The exhaust elastic member 320 is clamped between the exhaust piston 312 and the exhaust seat 141.

[0056] In order to achieve better sealing effect, Figures 3 to 5 As shown, in one embodiment, the outer surface of the intake seat 131 is connected to the side wall of the intake channel 130, the intake limit plate 211 movably blocks the intake seat 131, and an intake sealing ring 500 is arranged between the intake limit plate 211 and the intake seat 131; and / or the outer surface of the exhaust seat 141 is connected to the side wall of the exhaust channel 140, the exhaust limit plate 311 movably blocks the exhaust seat 141, and an exhaust sealing ring 600 is arranged between the exhaust limit plate 311 and the exhaust seat 141.

[0057] Specifically, the specific structures of the air intake assembly 200 and the exhaust assembly 300 are set according to actual production conditions:

[0058] For example, the outer surface of the intake seat 131 is connected to the side wall of the intake channel 130, the intake limit plate 211 movably blocks the intake seat 131, and an intake sealing ring 500 is arranged between the intake limit plate 211 and the intake seat 131; and the outer surface of the exhaust seat 141 is connected to the side wall of the exhaust channel 140, the exhaust limit plate 311 movably blocks the exhaust seat 141, and an exhaust sealing ring 600 is arranged between the exhaust limit plate 311 and the exhaust seat 141.

[0059] In this way, the outer surface of the air intake seat 131 blocks the air intake channel 130, so that the gas flows through the inside of the air intake seat 131, thereby limiting the air intake unit 210 and clamping it in the air intake channel 130, which is convenient for the abutment installation of the air intake elastic member 220, and the bottom end face of the air intake seat 131 is installed with an air intake sealing ring 500, so that when the air intake limiting plate 211 approaches the air intake seat 131 until the air intake channel 130 is blocked, the air intake sealing ring 500 can play a sealing role, thereby ensuring the sealing effect of the two-way explosion-proof valve 10. The outer surface of the exhaust seat 141 blocks the exhaust channel 140 to allow the gas to flow through the inside of the exhaust seat 141, thereby limiting the position of the exhaust unit 310 and clamping it in the exhaust channel 140, which is convenient for abutting and installing the exhaust elastic member 320, and an exhaust sealing ring 600 is installed on the top end face of the exhaust seat 141, so that when the exhaust limiting plate 311 approaches the exhaust seat 141 until the exhaust channel 140 is blocked, the exhaust sealing ring 600 can play a sealing role, thereby further ensuring the sealing effect of the two-way explosion-proof valve 10.

[0060] For another example, the outer surface of the air intake seat 131 is connected to the side wall of the air intake passage 130 , the air intake limiting plate 211 movably blocks the air intake seat 131 , and an air intake sealing ring 500 is disposed between the air intake limiting plate 211 and the air intake seat 131 .

[0061] For another example, the outer surface of the exhaust seat 141 is connected to the side wall of the exhaust channel 140 , the exhaust limiting plate 311 movably blocks the exhaust seat 141 , and an exhaust sealing ring 600 is disposed between the exhaust limiting plate 311 and the exhaust seat 141 .

[0062] In order to increase the dustproof effect inside the two-way explosion-proof valve 10, Figures 3 to 5 As shown, in one embodiment, a mounting groove is provided on the side wall of the top groove 110, a cover body 700 is installed on the side wall of the mounting groove, and an air hole 710 is provided on the cover body 700 or a gap is provided between the cover body 700 and the mounting groove.

[0063] Specifically, the specific structure of the valve body 100 is set according to actual production conditions:

[0064] For example, a mounting groove is provided on the side wall of the top groove 110, a cover body 700 is installed on the side wall of the mounting groove, and air holes 710 are provided on the cover body 700. In this way, a mounting groove is provided on the top of the valve body 100, the connecting rod 400 is spaced apart from the inner surface of the mounting groove, and the air holes 710 are surrounded and evenly provided on the cover body 700, which is convenient for airflow to enter and flow out, and the protective effect of the cover body 700 effectively prevents dust from contaminating the inside of the two-way explosion-proof valve 10.

[0065] For another example, a mounting groove is formed on the side wall of the top groove 110 , a cover body 700 is mounted on the side wall of the mounting groove, and a gap is formed between the cover body 700 and the mounting groove.

[0066] In order to improve the airflow exchange efficiency of the valve body 100, as Figure 3 and Figure 4 As shown, in one embodiment, a bottom groove 120 for communicating with the outside of the explosion-proof valve is opened on the valve body 100, and the bottom groove 120 is communicated with the intake channel 130 and the exhaust channel 140 respectively.

[0067] Specifically, a bottom groove 120 is opened on the bottom end surface of the valve body 100 to shorten the length of the intake channel 130 and the exhaust channel 140. The width of the bottom groove 120 is large, so airflow exchange can be performed in time, thereby effectively speeding up the airflow exchange efficiency of the valve body 100.

[0068] Example 2

[0069] In this embodiment, Figure 6 and Figure 7 As shown, a battery assembly is provided, including the two-way explosion-proof valve 10 in Example 1, and also including a battery (not shown) and a box body 20. The battery is installed in the box body 20, and the two-way explosion-proof valve 10 is penetrated on the box body 20 to connect the inside and outside of the box body 20.

[0070] Specifically, a positioning hole is provided on the box body 20, and the two-way explosion-proof valve 10 is connected to the side wall of the positioning hole, so that the top groove 110 of the two-way explosion-proof valve 10 is located outside the box body 20, and one end of the two-way explosion-proof valve 10 away from the top groove 110 is located inside the box body 20. The outer surface of the two-way explosion-proof valve 10 is threadedly connected to the directional hole.

[0071] Furthermore, an abutting sealing ring 150 is connected to the top of the valve body 100, and the abutting sealing ring 150 abuts against the outer surface of the box body 20, so that when the two-way explosion-proof valve 10 is installed in the positioning hole, the sealing between the two-way explosion-proof valve 10 and the box body 20 is better.

[0072] The battery in the battery assembly can be a lithium battery, a sodium ion battery, a fuel cell, etc., and the type of the battery is not limited. The box can adopt a variety of different structures such as metal and non-metal, as long as it can be used to protect and support the battery. The specific submodules included in the battery assembly are not limited in this application.

[0073] like Figures 5 to 7 As shown, the working principle of the two-way explosion-proof valve 10 in the box 20 is as follows:

[0074] automatic:

[0075] When the external air pressure is greater than the internal air pressure: Figure 6 , the outside air will flow inward, the outside air will enter the top groove 110 from the air hole 710 of the cover body 700, and then flow in from the air inlet channel 130, and flow through the gap between the air inlet unit 210 and the air inlet seat 131, that is, the gap between the air inlet limit plate 211 and the air inlet seat 131, and the air inlet limit plate 211 will move downward due to the internal and external pressure difference. At the same time, the air inlet elastic member 220 is compressed, and the air inlet channel 130 is opened, so that the outside air can enter the box body 20, thereby balancing the internal and external pressure difference of the box body 20. In this process, the exhaust assembly 300 closes the exhaust channel 140.

[0076] When the internal air pressure is greater than the external air pressure: Figure 7 , the internal gas will flow outward, the internal gas will enter the bottom groove 120, flow through the exhaust channel 140, and then flow into the gap between the exhaust unit 310 and the exhaust seat 141, that is, the gap between the exhaust limit plate 311 and the exhaust seat 141, and the exhaust limit plate 311 will move upward due to the internal and external pressure difference. At the same time, the exhaust elastic member 320 is compressed, and the exhaust channel 140 is opened, so that the internal gas is discharged outside the box body 20, thereby balancing the internal and external pressure difference of the box body 20. In this process, the air intake assembly 200 closes the air intake channel 130.

[0077] Manual:

[0078] By pulling the top of the connecting rod 400 , the exhaust is manually controlled to achieve the internal and external circulation of gas and balance the pressure difference between the inside and outside of the sealed box 20 .

[0079] Example 3

[0080] In this embodiment, an electrical device is provided, including the battery assembly for providing electrical energy in Embodiment 2.

[0081] The drawings are only for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limitations on this patent. In addition, it should also be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device are only for illustrative purposes and should not constitute any limitation on this application.

[0082] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those generally understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions. The same or similar reference numerals in the drawings of the embodiments of this application correspond to the same or similar components; in the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short" and the like indicating the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the position relationship in the drawings are only used for exemplary description and cannot be understood as a limitation of this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0083] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but within the error tolerance range. "Parallel" is not strictly parallel, but within the error tolerance range. In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of the embodiments of the present application, the orientation or position relationship indicated by the technical terms "thickness", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0084] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation methods of the present application. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A two-way explosion-proof valve, characterized in that: include: A valve body (100), wherein the valve body (100) is provided with a top groove (110) for communicating with external gas, and the top groove (110) is provided with an air intake channel (130) and an air exhaust channel (140); An air intake assembly (200) is installed in the air intake passage (130) and is used to open or close the air intake passage (130) under the action of air pressure; An exhaust assembly (300) is installed in the exhaust passage (140) and is used to open or close the exhaust passage (140) under the action of air pressure.

2. The two-way explosion-proof valve according to claim 1, characterized in that: The air intake assembly (200) and the air exhaust assembly (300) are staggered or arranged in parallel.

3. The two-way explosion-proof valve according to claim 1, characterized in that: The air intake assembly (200) comprises an air intake unit (210), wherein one end of the air intake unit (210) away from the top groove (110) opens or closes the air intake channel (130) under the action of air pressure, and an air intake elastic member (220) is clamped between one end of the air intake unit (210) close to the top groove (110) and the side wall of the air intake channel (130), so that the air intake unit (210) closes the air intake channel (130) in a normal state; and / or The exhaust assembly (300) comprises an exhaust unit (310), wherein one end of the exhaust unit (310) close to the top groove (110) opens or closes the exhaust channel (140) under the action of air pressure, and an exhaust elastic member (320) is clamped between one end of the exhaust unit (310) away from the top groove (110) and the side wall of the exhaust channel (140), so that the exhaust unit (310) closes the exhaust channel (140) under normal conditions.

4. The two-way explosion-proof valve according to claim 3, characterized in that: The air intake assembly (200) and the exhaust assembly (300) are arranged in an up-and-down manner. The exhaust unit (310) is arranged close to the top groove (110), and a connecting rod (400) is arranged at one end of the exhaust unit (310) close to the top groove (110), and the connecting rod (400) is arranged to protrude from the valve body (100); or The air intake unit (210) is arranged close to the top groove (110), and a connecting rod (400) is arranged at one end of the air intake unit (210) close to the top groove (110), and the connecting rod (400) is arranged to protrude from the valve body (100).

5. The two-way explosion-proof valve according to claim 3, characterized in that: The air intake unit (210) comprises an air intake limit plate (211) and an air intake piston (212); an air intake seat (131) is arranged on the side wall of the air intake channel (130); one end of the air intake limit plate (211) movably closes or opens the air intake channel (130); the other end of the air intake limit plate (211) passes through the air intake seat (131) and is connected to the air intake piston (212); and the air intake elastic member (220) is clamped between the air intake piston (212) and the air intake seat (131); and / or The exhaust unit (310) comprises an exhaust limit plate (311) and an exhaust piston (312); an exhaust seat (141) is provided on the side wall of the exhaust channel (140); one end of the exhaust limit plate (311) movably closes or opens the exhaust channel (140); the other end of the exhaust limit plate (311) passes through the exhaust seat (141) and is connected to the exhaust piston (312); and the exhaust elastic member (320) is clamped between the exhaust piston (312) and the exhaust seat (141).

6. The two-way explosion-proof valve according to claim 5, characterized in that: The outer surface of the air intake seat (131) is connected to the side wall of the air intake passage (130), the air intake limit plate (211) movably blocks the air intake seat (131), and an air intake sealing ring (500) is provided between the air intake limit plate (211) and the air intake seat (131); and / or The outer surface of the exhaust seat (141) is connected to the side wall of the exhaust channel (140), the exhaust limit plate (311) movably blocks the exhaust seat (141), and an exhaust sealing ring (600) is provided between the exhaust limit plate (311) and the exhaust seat (141).

7. The two-way explosion-proof valve according to claim 1, characterized in that: A mounting groove is provided on the side wall of the top groove (110), a cover body (700) is installed on the side wall of the mounting groove, and an air hole (710) is provided on the cover body (700) or a gap is provided between the cover body (700) and the mounting groove.

8. The two-way explosion-proof valve according to claim 1, characterized in that: The valve body (100) is provided with a bottom groove (120) for communicating with the outside of the explosion-proof valve, and the bottom groove (120) is respectively communicated with the air intake channel (130) and the air exhaust channel (140).

9. A battery assembly, characterized in that: The invention comprises a two-way explosion-proof valve (10) as claimed in any one of claims 1 to 8, and further comprises a battery and a box (20), wherein the battery is installed in the box (20), and the two-way explosion-proof valve (10) is passed through the box (20) to connect the inner and outer sides of the box (20).

10. An electrical device, characterized in that: A battery assembly for providing electrical energy comprising the battery assembly as claimed in claim 9.

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