Explosion-proof valve, battery box and vehicle

Abstract

The invention provides an anti-explosion valve, a battery box and a vehicle, the anti-explosion valve comprises an anti-explosion valve body, the anti-explosion valve is internally provided with a valve cavity, and the anti-explosion valve is provided with an air inlet for air inlet of the valve cavity and an air outlet for air outlet of the valve cavity; the condensation piece is arranged in the valve cavity; and the refrigerating part is connected with the anti-explosion valve body and can be used for cooling the valve cavity of the anti-explosion valve body. According to the explosion-proof valve, the refrigerating part is connected with the explosion-proof valve body, the refrigerating part can directly absorb heat for the explosion-proof valve body, so that the temperature in the valve cavity of the explosion-proof valve is reduced, the condensing part is arranged in the valve cavity, and air can be in contact with the condensing part when entering the valve cavity through the air inlet, so that the temperature of the air can be effectively reduced; according to the anti-explosion valve, the condensation part is arranged on the anti-explosion valve body, water vapor passing through the condensation part is condensed into liquid water, the condensation part and the refrigeration part are integrated on the anti-explosion valve body, the safety of a battery system is guaranteed, effective control over humidity is achieved, and the anti-explosion valve can be more compact.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and mainly to an explosion-proof valve, a battery box, and a vehicle. Background Technology

[0002] In the use of power battery packs in pure electric or hybrid vehicles, condensation easily forms on the surfaces of cooling components (such as refrigerant pipes) inside the battery pack. When condensation reaches a certain level, water accumulates, affecting the battery pack's performance. Current technology uses dehumidifiers inside the battery pack to dehumidify the air, but these built-in devices often fail to remove water vapor that enters the battery pack in a timely manner. Furthermore, since the battery pack is typically sealed, condensation mainly occurs because water vapor can freely enter the battery pack when it is exposed to outside air. If this water vapor is not removed promptly, the warmer, water-rich air can condense on the cooler surfaces of components, leading to charging problems and other malfunctions. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an explosion-proof valve, a battery box and a vehicle that can enter the battery box to remove water vapor, thereby effectively reducing condensation inside the battery box.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: One aspect of the present invention provides an explosion-proof valve, comprising an explosion-proof valve body having a valve cavity, an air inlet for air entering the valve cavity and an air outlet for air exiting the valve cavity; a condenser disposed within the valve cavity; and a cooling component connected to the explosion-proof valve body for cooling the valve cavity of the explosion-proof valve body.

[0005] The first aspect of this application discloses an explosion-proof valve. By connecting a cooling component to the valve body, the cooling component directly absorbs heat from the valve body, thereby lowering the temperature inside the valve cavity. A condenser is located inside the valve cavity. When air enters the valve cavity through the inlet, it comes into contact with the condenser, effectively reducing the air temperature and causing water vapor passing through the condenser to condense into liquid water. The cooling effect of the cooling component further lowers the temperature inside the valve cavity, enhancing the condensation effect. Furthermore, by integrating the condenser and cooling component onto the explosion-proof valve, the valve not only prevents explosions inside the battery box due to excessive gas pressure but also provides dehumidification, ensuring the safety of the battery system, effectively controlling humidity, and making the dehumidification structure more compact.

[0006] According to some technical solutions of the present invention, the cooling element includes a hot end and a cold end, and the explosion-proof valve body includes a sidewall surrounding the valve cavity. The cold end and the condenser are located on opposite sides of the sidewall, and the sidewall transfers heat between the cold end and the condenser. According to some technical solutions of the present invention, the cooling element includes a thermoelectric cooler, which includes the hot end and the cold end. Multiple thermoelectric coolers are arranged circumferentially spaced along the sidewall. Because the thermoelectric cooler is relatively small, it can be easily integrated into the explosion-proof valve without significantly increasing the overall size, thus giving the explosion-proof valve a compact advantage. Furthermore, the thermoelectric cooler has the characteristics of rapid cooling and fast response, which can quickly reduce the temperature inside the valve cavity, achieving efficient cooling of the valve cavity and improving dehumidification. Moreover, multiple thermoelectric coolers can work simultaneously, thereby reducing the temperature inside the valve cavity more quickly. Furthermore, when multiple thermoelectric coolers are arranged circumferentially spaced along the sidewall, the sidewall can be cooled uniformly, preventing localized excessively high or low temperatures.

[0007] According to some technical solutions of the present invention, the condenser is in close contact with the side wall of the valve cavity.

[0008] According to some technical solutions of the present invention, the explosion-proof valve further includes a heat dissipation component, which is disposed at the hot end of the cooling component. By adding the heat dissipation component, the heat generated at the hot end can be quickly dissipated, effectively reducing the temperature of the hot end of the cooling component and preventing the cooling component from being damaged due to overheating.

[0009] According to some technical solutions of the present invention, the outer surface of the sidewall is constructed as a polygon, the heat sink has a polygonal inner surface, the heat sink is sleeved on the outer side of the sidewall, the inner side of the heat sink and the outer side of the sidewall are spaced apart and opposite to each other, the cooling element is located between the inner side of the heat sink and the outer side of the sidewall, the hot end is fitted with the inner side of the heat sink, and the cold end is fitted with the outer side of the sidewall. By constructing the outer surface of the sidewall as a polygon, the polygonal structure can better increase the contact area with the cooling element, and further increase the heat dissipation area of ​​the outer nested heat sink to the cooling element, thereby improving the cooling effect of the cooling element on the valve cavity. Moreover, the polygonal structure can more easily adapt to and cooperate with other components, such as cooling elements and fasteners, simplifying the installation process and improving assembly efficiency.

[0010] According to some technical solutions of the present invention, fasteners and heat insulation components are further included. The fasteners are sleeved on the outer surface of the explosion-proof valve body and are used to fix the heat sink to the explosion-proof valve body. The heat insulation components are sleeved on the outer surface of the explosion-proof valve body, and the axial ends of the heat insulation components abut against the fasteners and the heat sink to block the heat transfer between the heat sink and the fasteners. By providing fasteners, the heat sink can be firmly fixed to the explosion-proof valve. Furthermore, since the heat sink generates heat during operation, by sleeved on the outer surface of the explosion-proof valve, the heat transfer between the heat sink and the fasteners can be prevented, thereby reducing the heat transfer from the heat sink mounting structure to the explosion-proof valve.

[0011] According to some technical solutions of the present invention, the heat sink is provided with heat dissipation fins. The design of the heat dissipation fins can significantly increase the surface area of ​​the heat sink, thereby more efficiently dissipating the heat from the hot end of the thermoelectric cooler to the surrounding environment, preventing heat from accumulating on the heat sink, and ensuring that the hot end of the thermoelectric cooler can maintain a low temperature.

[0012] According to some technical solutions of the present invention, the condenser includes a filter screen. The filter screen can effectively increase the contact area and time between moisture and the condenser, thereby facilitating the acceleration of the condensation and removal process of moisture in the air. At the same time, the filter screen can also intercept dust, dirt and other impurities in the air entering the valve cavity through the air inlet, achieving a good dustproof effect.

[0013] According to some technical solutions of the present invention, the filter screen has a multi-layer structure. By setting a multi-layered filter screen structure, it is beneficial to improve the filter screen's interception effect on water vapor, thereby achieving a better dehumidification effect.

[0014] According to some technical solutions of the present invention, the filter screen is provided with a mounting portion located on the outer periphery of the filter screen, and the mounting portion has an extension section along the side wall, the extension section abutting against the inner surface of the side wall. By providing an extension section along the side wall for the mounting portion, and the extension section abutting against the inner surface of the side wall, it is ensured that the filter screen is securely installed in the valve cavity of the explosion-proof valve, making the filter screen less prone to falling off or moving.

[0015] According to some technical solutions of the present invention, a sensor is also included. The sensor is located inside the valve cavity or disposed at the air inlet or outlet. The sensor is used to sense changes in air pressure inside the valve cavity to trigger a signal for the operation of the refrigeration component. By setting a pressure sensor, real-time monitoring and signal transmission of air pressure inside the valve cavity are achieved. The pressure sensor is electrically connected to the refrigeration component, realizing automatic control of the operating state of the refrigeration component.

[0016] The present invention provides a battery box, comprising a battery box shell, a battery module, and an explosion-proof valve as described in any of the above embodiments. The battery module is installed inside the battery box shell, and the explosion-proof valve passes through the battery box shell and connects the interior of the battery box shell with the external air. By integrating the explosion-proof valve inside the battery box, with the outlet of the explosion-proof valve directly connected to the battery box shell, the explosion-proof valve acts as the air inlet of the battery box. In this way, the air dehumidified by the explosion-proof valve enters the battery box shell, effectively removing moisture from the air entering the battery box at the inlet of the explosion-proof valve, preventing moisture from entering the battery box and greatly reducing the damage and malfunction of components that may be caused by condensation inside the battery box.

[0017] The present invention provides a vehicle comprising a vehicle body and a drive unit disposed on the vehicle body, wherein the drive unit includes a battery box as described in any of the above embodiments. Attached Figure Description

[0018] Figure 1 One of the cross-sectional views of an explosion-proof valve according to an embodiment; Figure 2 This is a second cross-sectional view of an explosion-proof valve according to one embodiment.

[0019] The correspondence between the reference numerals and the component names is as follows: 1. Explosion-proof valve, 101. Valve chamber, 102. Air inlet, 103. Air outlet; 2. Condenser, 21. Filter, 22. Extension section; 3. Refrigeration components; 41 Heat sink, 42 ​​Heat sink fins; 5 Fasteners; 6. Thermal insulation components; 7 sensors. Detailed Implementation

[0020] This invention provides an explosion-proof valve 1, a battery box, and a vehicle. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the scope of protection of the invention.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Please refer to the attached Figure 1 and Figure 2 One embodiment of this application provides an explosion-proof valve, including an explosion-proof valve body 1, a condenser 2, and a refrigeration component 3.

[0024] The explosion-proof valve body 1 has a valve chamber 101 inside, and an air inlet 102 for air to enter the valve chamber 101 and an air outlet 103 for air to exit the valve chamber 101. Specifically, the explosion-proof valve is an important component of the battery box, and its main function is to prevent the battery box from exploding due to excessive gas pressure. The explosion-proof valve body 1 has a valve chamber 101 inside, and air is allowed to enter and exit through the air inlet 102 and the air outlet 103, respectively.

[0025] The cooling component 3 is connected to the explosion-proof valve body 1 and can be used to cool the valve cavity 101 of the explosion-proof valve body 1. By connecting the cooling component 3 to the explosion-proof valve body 1, the cooling component 3 can directly absorb heat from the explosion-proof valve body 1, thereby lowering the temperature inside the valve cavity 101 of the explosion-proof valve body 1. For example, the cooling component 3 can be any device capable of providing cooling capacity, such as a coolant circulation system or an electronic refrigerator, or other components with a cooling effect.

[0026] The condenser 2 is located inside the valve chamber 101. When air enters the valve chamber 101 through the air inlet 102, it will come into contact with the condenser 2, thereby effectively reducing the temperature of the air and causing the water vapor passing through the condenser 2 to condense into liquid water. Under the cooling effect of the refrigeration unit 3, the temperature inside the valve chamber 101 can be further reduced, thereby enhancing the condensation effect of the condenser 2 on water.

[0027] The explosion-proof valve disclosed in this application effectively removes moisture from the air entering the battery box by lowering the temperature of the valve chamber 101 of the explosion-proof valve body 1. This prevents moisture from entering the battery box, thus controlling the humidity inside the battery box, significantly reducing condensation, and protecting the normal operation of the battery system. Furthermore, by integrating the condenser 2 and the cooling component 3 onto the explosion-proof valve body 1, the valve body 1 not only has dehumidification capabilities but also retains its basic functions. In the event of an abnormal situation inside the battery box, the explosion-proof valve body 1 can quickly open to release pressure, preventing the battery box from exploding. This integrated design ensures the safety of the battery system, achieves effective humidity control, and makes the overall structure of the explosion-proof valve more compact, reducing its space requirements.

[0028] In some embodiments, the cooling element 3 includes a hot end and a cold end, and the explosion-proof valve body 1 includes a sidewall that surrounds the valve cavity 101. The cold end and the condenser 2 are located on opposite sides of the sidewall, and the sidewall transfers heat between the cold end and the condenser 2.

[0029] The cooling component 3 includes a thermoelectric cooler, which has a hot end and a cold end. Using a thermoelectric cooler as the cooling component 3 allows for easy integration into the explosion-proof valve body 1 due to its relatively small size, without significantly increasing the overall size. This results in a compact explosion-proof valve body 1. When applied to automotive battery boxes, this helps reduce the size and weight of the battery box, improving the vehicle's energy efficiency and performance. Furthermore, the thermoelectric cooler features rapid cooling and fast response, quickly reducing the temperature inside the valve cavity 101, achieving efficient cooling of the valve cavity 101, and thus improving dehumidification.

[0030] Specifically, a thermoelectric cooler includes a hot end and a cold end. When current passes through the thermoelectric cooler, the hot end releases heat, while the cold end absorbs heat, thereby achieving a cooling effect.

[0031] Please refer to the attached Figure 2 Furthermore, the sidewall of the explosion-proof valve body 1 forms a valve cavity 101, and a semiconductor cooling chip and a condenser 2 are respectively provided on the inner and outer sides of the sidewall. When the semiconductor cooling chip is working, the heat absorption effect of the cold end will cause the sidewall to conduct heat between the cold end and the condenser 2, further reducing the temperature inside the valve cavity 101.

[0032] Specifically, the thermoelectric cooler comprises multiple thermoelectric coolers arranged circumferentially spaced along the sidewall. By incorporating multiple thermoelectric coolers in the explosion-proof valve body 1, their simultaneous operation increases the total cooling capacity, thereby reducing the temperature within the valve cavity 101 more quickly. Furthermore, the circumferentially spaced arrangement of the thermoelectric coolers along the sidewall ensures uniform cooling of the sidewall, preventing localized overheating or underheating. This distribution ensures a more uniform temperature within the valve cavity 101, which is beneficial for maintaining uniform airflow and dehumidification within the valve cavity 101. On the other hand, if one thermoelectric cooler malfunctions or fails, the others can continue to operate, ensuring the normal operation of the explosion-proof valve body 1 and thus improving reliability.

[0033] Furthermore, the condenser 2 contacts the side wall near the valve cavity 101. Through the direct contact between the condenser 2 and the side wall of the valve cavity 101, the heat transfer between the two is more direct and efficient. The cooling capacity transferred by the cooling component 3 to the side wall of the valve cavity 101 can be transferred to the condenser 2 more quickly, thereby accelerating the condensation and removal process of moisture.

[0034] In some embodiments, a heat sink 41 is also included, which is disposed at the hot end of the cooling element. Specifically, the heat sink 41 can be disposed at the hot end of the thermoelectric cooler. Since the hot end of the thermoelectric cooler generates heat when it is working, by adding the heat sink 41, the heat sink 41 can quickly dissipate the heat generated at the hot end, effectively reducing the temperature of the hot end of the thermoelectric cooler, preventing the thermoelectric cooler from being damaged due to overheating, which can not only extend the service life of the thermoelectric cooler and reduce the failure rate, but also maintain the cooling efficiency of the thermoelectric cooler.

[0035] In some embodiments, the outer surface of the sidewall is constructed as a polygon, and the heat sink 41 has a polygonal inner surface. The heat sink 41 is fitted onto the outer side of the sidewall, with the inner side of the heat sink 41 and the outer side of the sidewall spaced apart. The cooling component is located between the inner side of the heat sink 41 and the outer side of the sidewall, with the hot end fitting against the inner side of the heat sink 41 and the cold end fitting against the outer side of the sidewall. By constructing the outer surface of the sidewall as a polygon, the polygonal structure can better increase the contact area with the cooling component 3, and further increase the heat dissipation area of ​​the outer nested heat sink 41 on the cooling component 3, thereby improving the cooling effect of the cooling component 3 on the valve cavity 101. Moreover, the polygonal structure can more easily adapt to and cooperate with other components, such as the cooling component 3 and the fastener 5, simplifying the installation process and improving assembly efficiency.

[0036] Further details are provided in the appendix. Figure 2The semiconductor cooling element 3 is configured in a polygonal shape around the outer surface of the sidewall and is located between the inner side of the heat sink 41 and the outer side of the sidewall. This allows the hot end of the semiconductor cooling element 3 to be in direct contact with the inner side of the heat sink 41, and the cold end of the semiconductor cooling element 3 to be in direct contact with the outer side of the sidewall, enabling the hot and cold ends of the semiconductor cooling element 3 to transfer heat more efficiently.

[0037] To provide a more detailed example, in order to further improve the cooling effect of the cold end of the semiconductor cooling component 3 to the explosion-proof valve body 1, and the heat transfer effect between the hot end of the semiconductor cooling component 3 and the heat sink 41, thermal grease can be applied to the cold end and the hot end respectively to facilitate heat conduction.

[0038] In some embodiments, a fastener 5 and a heat insulation component 6 are also included. The fastener 5 is sleeved on the outer surface of the explosion-proof valve body 1 and is used to fix the heat sink 41 to the explosion-proof valve body 1. The heat insulation component 6 is sleeved on the outer surface of the explosion-proof valve body 1, with its axial ends abutting against the fastener 5 and the heat sink 41 to block heat transfer between the heat sink 41 and the fastener. By providing the fastener 5 and sleeved on the outer surface of the explosion-proof valve body 1, the fastener 5 can firmly fix the heat sink 41 to the explosion-proof valve body 1. This ensures that the heat sink 41 will not loosen or fall off due to vibration or temperature changes during the operation of the explosion-proof valve body 1, thereby maintaining a stable heat conduction effect.

[0039] Furthermore, since the heat sink 41 generates heat during operation, by fitting the heat insulation element 6 onto the outer surface of the explosion-proof valve body 1, heat transfer between the heat sink 41 and the fastener 5 can be prevented, thus preventing heat transfer to the explosion-proof valve body 1 due to the installation and fixing structure of the heat sink 41. In this way, the setting of the heat insulation element 6 can reduce heat transfer and effectively prevent the temperature of the explosion-proof valve body 1 from rising, which would affect the dehumidification effect on the water vapor entering the valve cavity 101.

[0040] Specifically, the heat sink 41 is provided with heat dissipation fins 42. The design of the heat dissipation fins 42 can significantly increase the surface area of ​​the heat sink 41. In this way, when heat is transferred to the heat sink 41, the heat dissipation fins 42 can more effectively dissipate the heat on the hot end side of the thermoelectric cooler to the surrounding environment, prevent heat from accumulating on the heat sink 41, ensure that the hot end of the thermoelectric cooler can maintain a low temperature, and improve the heat dissipation effect.

[0041] More specifically, the heat sink 41 as a whole and the heat sink fins 42 can be made of materials with good thermal conductivity, such as metal.

[0042] In some embodiments, the condenser 2 includes a filter 21. This filter 21 effectively intercepts and captures moisture in the air, increasing the contact area and time between moisture and the condenser 2. This facilitates faster condensation and removal of moisture from the air, thereby improving the dehumidification effect of the explosion-proof valve body 1. Furthermore, in addition to improving condensation, the filter 21 also intercepts dust, dirt, and other impurities in the air entering the valve cavity 101 through the air inlet, providing excellent dust prevention.

[0043] Furthermore, the filter 21 has a multi-layered structure. Each layer of the filter 21 can intercept a portion of moisture and impurities. With multiple layers stacked, the interception capacity of the filter 21 is significantly improved, resulting in better dehumidification. More specifically, the multi-layered filter 21 can more effectively remove moisture and impurities from the air through different levels of interception and filtration. For example, each layer of the filter 21 can be configured to filter particles and pollutants of different sizes. Correspondingly, each layer can use different materials, pore sizes, and filtration mechanisms, thereby providing a more comprehensive filtration effect.

[0044] Furthermore, the filter screen 21 is provided with a mounting portion located on the outer periphery of the filter screen 21. An extension 22 is provided along the side wall of the mounting portion, and the extension 22 abuts against the inner surface of the side wall. By providing the extension 22 along the side wall of the mounting portion, and having the extension 22 abut against the inner surface of the side wall, the filter screen 21 is securely installed within the valve cavity 101 of the explosion-proof valve body 1, making it less likely for the filter screen 21 to fall off or move. Furthermore, the mounting portion is provided around the outer periphery of the filter screen 21, as shown in the attached drawing. Figure 1 It is known that the edge of the filter screen 21 is set along the inner wall surface of the side wall, which can avoid the formation of gaps between the filter screen 21 and the side wall, thereby enabling effective dehumidification and dust removal of all gas passing through the valve chamber 101.

[0045] In some embodiments, the explosion-proof valve body 1 also includes a sensor 7, which is located in the valve cavity 101 or disposed at the air inlet 102 or the air outlet 103. The sensor 7 is used to sense the air pressure change in the valve cavity 101 to trigger the signal for the operation of the cooling component 3.

[0046] Specifically, sensor 7 can be configured as a pressure sensor. Air enters the valve chamber 101 through the air inlet 102 on the explosion-proof valve body 1. By setting sensor 7, the air pressure change inside the explosion-proof valve body 1 can be monitored in real time. Once the air pressure reaches a preset threshold or meets specific conditions, sensor 7 will send a signal to the cooling component 3, triggering the cooling component 3 to operate. In this way, by setting sensor 7, the air pressure inside the valve chamber 101 can be monitored and signal transmitted in real time. Sensor 7 is electrically connected to the cooling component 3, realizing automatic control of the working state of the cooling component 3. The cooling component 3 will only start working when the air pressure reaches the preset condition, avoiding unnecessary energy waste and thus achieving energy saving effect.

[0047] More specifically, the number of pressure sensors can be set to two. Preferably, one sensor is set near the air inlet 102 and the other sensor is set near the air outlet 103. By detecting the air pressure status of the air inlet 102 and the air outlet 103 of the sensor 7 respectively, it is determined whether the valve chamber 101 is in the air intake state. Once the valve chamber 101 is in the air intake state, the cooling component 3 is controlled in time so that the condensing component 2 can condense the gas entering the valve chamber 101 in time.

[0048] The second aspect of this invention discloses a battery box, including a battery box housing, a battery module, and an explosion-proof valve body 1 as described in any of the above embodiments. The battery module is installed inside the battery box housing, and the explosion-proof valve body 1 passes through the battery box housing and connects the interior of the battery box housing with the external air. Specifically, the battery module is installed inside the battery box housing and is responsible for energy storage and power supply. By integrating the explosion-proof valve body 1 inside the battery box, the air outlet 103 of the explosion-proof valve body 1 is directly connected to the battery box housing. In this way, the air dehumidified by the explosion-proof valve body 1 enters the battery box housing, thereby effectively removing moisture from the air entering the battery box at the inlet of the explosion-proof valve body 1, preventing moisture from entering the battery box. Thus, the humidity inside the battery box is controlled, condensation is greatly reduced, and the normal operation of the battery system is protected.

[0049] More specifically, the battery box also includes a dehumidification structure, which is located inside the battery box shell. This results in two dehumidification structures within the battery box: one is the aforementioned explosion-proof valve body 1 located at the air inlet of the battery box shell, and the other is the dehumidification structure located inside the battery box shell. In this way, the explosion-proof valve body 1 can remove most of the moisture in the air entering the battery box shell, while the dehumidification structure can remove any moisture not intercepted by the explosion-proof valve body 1, further reducing the humidity inside the battery box shell and thus ensuring the safety of the internal environment of the battery box.

[0050] For more detailed examples, the dehumidification structure can use any device that can provide cooling capacity, such as a coolant circulation system or an electronic refrigerator, or other components with a cooling effect, or dehumidifying agents, etc.

[0051] A third aspect of this invention discloses a vehicle, including a vehicle body and a drive unit disposed on the vehicle body, the drive unit including the battery box as described above. Because the explosion-proof valve body 1 can effectively remove moisture from the air, reducing the humidity inside the battery box, it reduces battery system failures and damage caused by excessive humidity. This reduces the maintenance cost of the vehicle's battery system and improves the overall economy and reliability of the vehicle.

[0052] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. An explosion-proof valve, characterized in that, include: The explosion-proof valve body has a valve cavity inside, and the explosion-proof valve body has an air inlet for air to enter the valve cavity and an air outlet for air to exit the valve cavity. A condenser is disposed within the valve cavity; A cooling component is connected to the explosion-proof valve body and is used to cool the explosion-proof valve body.

2. The explosion-proof valve according to claim 1, characterized in that, The refrigeration component includes a hot end and a cold end. The explosion-proof valve body includes a sidewall that surrounds the valve cavity. The cold end and the condenser are located on opposite sides of the sidewall, and the sidewall transfers heat between the cold end and the condenser.

3. The explosion-proof valve according to claim 2, characterized in that, The cooling element includes a thermoelectric cooler, the thermoelectric cooler having a hot end and a cold end, and a plurality of thermoelectric coolers being arranged circumferentially spaced along the outer surface of a sidewall away from the valve cavity; and / or The condenser is in contact with the inner surface of the sidewall near the valve chamber.

4. The explosion-proof valve according to claim 2, characterized in that, It also includes a heat sink, which is disposed at the hot end of the cooling component.

5. The explosion-proof valve according to claim 4, characterized in that, The outer surface of the sidewall is polygonal, the heat sink has a polygonal inner surface, the heat sink is fitted onto the outer side of the sidewall, the inner side of the heat sink and the outer side of the sidewall are spaced apart and opposite each other, the cooling element is located between the inner side of the heat sink and the outer side of the sidewall, the hot end is fitted to the inner side of the heat sink, and the cold end is fitted to the outer side of the sidewall; and / or It also includes fasteners and heat insulation components. The fasteners are sleeved on the outer surface of the explosion-proof valve body and are used to fix the heat sink to the explosion-proof valve body. The heat insulation components are sleeved on the outer surface of the explosion-proof valve body, and the axial ends of the heat insulation components abut against the fasteners and the heat sink to block heat transfer between the heat sink and the fasteners; and / or The heat sink is provided with heat dissipation fins.

6. The explosion-proof valve according to any one of claims 2 to 5, characterized in that, The condenser includes a filter screen.

7. The explosion-proof valve according to claim 6, characterized in that, The filter screen has a multi-layer structure; and / or The filter screen is provided with a mounting part located on the outer periphery of the filter screen, and the mounting part is provided with an extension section along the side wall, the extension section abutting against the inner surface of the side wall.

8. The explosion-proof valve according to any one of claims 2 to 5, characterized in that, Also includes: A sensor, located inside the valve chamber or disposed at the air inlet or outlet, is used to sense changes in air pressure within the valve chamber to trigger a signal for the operation of the refrigeration component.

9. A battery box, characterized in that, The device includes a battery housing, a battery module, and an explosion-proof valve as described in any one of claims 1 to 8, wherein the battery module is disposed within the battery housing, and the explosion-proof valve passes through the battery housing and connects the interior of the battery housing with the external air.

10. A vehicle, characterized in that, It includes a vehicle body and a drive unit disposed on the vehicle body, the drive unit including the battery box as described in claim 9.

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