Valve, battery, electrical equipment, valve manufacturing equipment and method

Abstract

The embodiments of the present application provide a valve, a battery, an electrical device, a valve manufacturing device and a method, which belong to the field of battery technology. The valve includes a valve body and a closure member, the valve body is used to be installed on a box body, and the valve body is provided with a medium injection port for connecting to a fire-fighting device. The closure member is connected to the valve body and closes the medium injection port, and the closure member is configured to open the medium injection port when the internal pressure or temperature of the box body reaches a threshold value to release the pressure inside the box body and allow the fire-fighting device to inject a fire-fighting medium into the box body through the medium injection port. The fire-fighting device can be connected to the medium injection port, and the fire-fighting medium provided by the fire-fighting device can enter the box body through the medium injection port to cool the battery cells in the box body, reduce the risk of large-area heat diffusion of the battery cells inside the box body, thereby quickly and effectively controlling the fire inside the box body and reducing the economic losses caused by the fire.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular, to a valve, a battery, an electrical device, a valve manufacturing device and a method. Background Art

[0002] At present, the batteries most commonly used in vehicles are generally lithium-ion batteries. As a rechargeable battery, lithium-ion batteries have the advantages of small size, high energy density, high power density, many cycles and long storage time.

[0003] A battery generally includes a housing and a battery cell (rechargeable battery) contained in the housing. The housing can provide a sealed environment for the battery cell to prevent liquid or foreign matter from affecting the charging or discharging of the battery cell. For a general battery, it is difficult to control the fire when the battery cell inside the battery thermally runs away. Summary of the invention

[0004] The embodiments of the present application provide a valve, a battery, an electrical device, a valve manufacturing device and a method to improve the problem that it is difficult to control the fire when the battery cells inside the battery have thermal runaway.

[0005] In a first aspect, an embodiment of the present application provides a valve, comprising a valve body and a closure member; the valve body is used to be installed on a box body, and the valve body is provided with a medium injection port for connecting to a fire-fighting device; the closure member is connected to the valve body and closes the medium injection port, and the closure member is configured to open the medium injection port when the internal pressure or temperature of the box body reaches a threshold value, so as to release the pressure inside the box body and allow the fire-fighting device to inject fire-fighting medium into the box body through the medium injection port.

[0006] In the above scheme, the medium injection port can be connected to the fire-fighting device so that the fire-fighting medium can be injected into the box through the fire-fighting device. When the battery monomer in the box thermally runs away and causes the internal pressure or temperature of the box to reach a threshold, the closure opens the medium injection port and the pressure in the box can be released through the medium injection port. After the medium injection port is opened, the fire-fighting device can be connected to the medium injection port, and the fire-fighting medium provided by the fire-fighting device can enter the box through the medium injection port to cool the battery monomer in the box, reduce the risk of large-area heat diffusion of the battery monomer inside the box, thereby quickly and effectively controlling the fire inside the box and reducing the economic losses caused by the fire.

[0007] In some embodiments, the valve body is provided with a pressure relief port, the closure member closes the pressure relief port, and the closure member is configured to open the pressure relief port and the medium injection port to release the pressure inside the box when the internal pressure or temperature of the box reaches a threshold.

[0008] In the above scheme, the valve body is also provided with a pressure relief port, and the pressure relief port and the medium injection port can be opened by the closure. After the closure opens the pressure relief port and the medium injection port, the pressure inside the box can be released through the pressure relief port and the medium injection port, and the fire fighting medium provided by the fire fighting device can also enter the box through the medium injection port and the pressure relief port in sequence to control the fire inside the box.

[0009] In some embodiments, the valve body includes a main body and a mounting member; the pressure relief port is provided on the main body, and the closure member is connected to the main body; the mounting member is installed on the main body, and the medium injection port is provided on the mounting member.

[0010] In the above scheme, the valve body is a split structure, which is simple and convenient for arranging the closing member. Since the medium injection port is arranged on the mounting member, the mounting member is a component connected to the fire fighting device, and the mounting member can be replaced according to demand.

[0011] In some embodiments, the pressure relief port includes an inlet and an outlet; the inlet is used to communicate with the medium injection port when the closure opens the pressure relief port and the medium injection port; the outlet is used to discharge the gas in the box when the fire-fighting medium enters the box through the medium injection port and the inlet in sequence.

[0012] In the above scheme, the inlet and the outlet are part of the pressure relief port. When the pressure inside the box is released, the discharge inside the box can be discharged outside the box through the inlet and the outlet. When the closure opens the pressure relief port and the medium injection port, the inlet is connected to the medium injection port, and the firefighting medium provided by the firefighting device can enter the box through the medium injection port and the inlet in sequence. At the same time, the gas inside the box can be discharged outside the box through the outlet to achieve the purpose of balancing the pressure inside and outside the box, reducing the risk of the firefighting medium provided by the firefighting device not being easy to enter the box due to the gradual increase of the pressure inside the box.

[0013] In some embodiments, the pressure relief port includes a plurality of the inlets distributed at intervals in the circumferential direction and a plurality of the outlets distributed at intervals in the circumferential direction; the plurality of the outlets are located at the periphery of the plurality of the inlets.

[0014] In the above scheme, the pressure relief port has multiple inlets and outlets that are circumferentially spaced, so that the fire-fighting medium can enter the box more quickly through the multiple inlets, and the gas in the box can be discharged out of the box more quickly through the multiple outlets. The multiple outlets are located on the periphery of the multiple inlets and are arranged reasonably. In the process of the fire-fighting medium continuously entering the box, it is more conducive to the gas in the box to be discharged out of the box through the multiple outlets.

[0015] In some embodiments, the mounting member is provided with an exhaust port independent of the medium injection port; when the closure member opens the pressure relief port and the medium injection port, the gas can be discharged out of the box through the outlet and the exhaust port in sequence.

[0016] In the above scheme, an exhaust port independent of the medium injection port is provided on the mounting member. The setting of the exhaust port can reduce the blocking effect of the mounting member on the outlet after being installed on the main body, so that the gas in the box can be discharged to the outside of the box through the outlet and the exhaust port in turn, thereby improving the smoothness of the gas discharge to the outside of the box and allowing the gas in the box to be discharged more quickly.

[0017] In some embodiments, the mounting member includes a tube body, a ring body and a connector; the medium injection port is arranged inside the tube body, and the tube body is used to be connected to the main body; the ring body is sleeved outside the tube body; the connector, the tube body and the ring body are connected through the connector; the exhaust port is formed between the inner circumferential wall of the ring body and the outer circumferential wall of the tube body.

[0018] In the above solution, the medium injection port is arranged in the tube body, and the exhaust port is formed between the inner peripheral wall and the outer peripheral wall of the ring body, so that the medium injection port and the exhaust port are independent of each other. The structure of this mounting piece is simple and easy to shape and manufacture.

[0019] In some embodiments, the mounting member is plug-fitted into the body.

[0020] In the above solution, the mounting piece and the body are plugged together to achieve quick assembly and disassembly of the two.

[0021] In some embodiments, the mounting member is inserted into the body.

[0022] In the above solution, the mounting member is plugged into the body, which can reduce the space outside the body occupied by the mounting member, making the overall structure of the valve more compact.

[0023] In some embodiments, a plurality of support portions are provided at intervals in the circumferential direction of the body, and the support portions are used to support the outer circumferential surface of the mounting member.

[0024] In the above scheme, a plurality of support parts for supporting the outer peripheral surface of the mounting part are arranged at intervals in the circumferential direction of the body. That is to say, after the mounting part is inserted into the body, each support part will support the outer peripheral surface of the mounting part, thereby realizing the positioning of the mounting part and ensuring that the mounting part has good stability after being inserted into the body.

[0025] In some embodiments, the support portion includes a support surface and a guide slope connected to the support surface;

[0026] The guide slope is used to guide the mounting member into the body so that the support surface contacts the outer peripheral surface of the mounting member.

[0027] In the above solution, the guiding inclined surface of the support portion plays a good guiding role in the process of inserting the mounting piece into the body, so that the mounting piece can more easily enter the body and contact the supporting surface of the support portion.

[0028] In some embodiments, the fire fighting device has a docking portion, and the medium injection port includes a plurality of coaxially arranged docking holes of different diameters for docking with the docking portion.

[0029] In the above solution, a plurality of docking holes with different diameters can be suitable for docking parts with different diameters, and docking parts with different diameters can all be docked with the medium injection port.

[0030] In some embodiments, the valve further comprises a fixing member, wherein the fixing member is used to be connected to the valve body so as to secure the valve body to the housing.

[0031] In the above solution, the valve body can be fixedly secured on the box body by the fixing member.

[0032] In some embodiments, the fixing member is detachably connected to the valve body, and the fixing member is used to cooperate with the valve body to clamp the box wall of the box body.

[0033] In the above scheme, the fixing member cooperates with the box body to clamp the box wall of the box body, so that the valve body can be firmly fixed on the box body. The solid member and the valve body are detachably connected, and the fixing member and the valve body are connected together, and the valve is installed on the box body. The fixing member is removed from the valve body, and the valve body can be removed from the box body, which is convenient for disassembly and installation of the valve.

[0034] In a second aspect, an embodiment of the present application provides a battery, comprising a housing, a battery cell, and a valve provided by any one embodiment of the first aspect; the battery cell is accommodated in the housing; and the valve body is installed in the housing.

[0035] In the above scheme, a fire-fighting medium can be injected into the box through a valve with a pressure relief function to cool the battery cells in the box, thereby reducing the risk of large-area heat diffusion of the battery cells inside the box, thereby quickly and effectively controlling the fire inside the box and reducing the economic losses caused by the fire.

[0036] In a third aspect, an embodiment of the present application provides an electrical device, comprising a battery provided by any embodiment of the second aspect.

[0037] In a fourth aspect, an embodiment of the present application provides a method for manufacturing a valve, comprising: providing a valve body, the valve body being provided with a medium injection port for connecting to a fire-fighting device, the valve body being used to be installed on a box body; providing a closure member; connecting the closure member to the valve body so that the closure member closes the medium injection port; wherein the closure member is configured to open the medium injection port when the internal pressure or temperature of the box body reaches a threshold value, so as to release the pressure inside the box body and allow the fire-fighting device to inject fire-fighting medium into the box body through the medium injection port.

[0038] In the fifth aspect, an embodiment of the present application also provides a valve manufacturing device, comprising a first providing device, a second providing device and an assembling device; the first providing device is used to provide a valve body, the valve body is provided with a medium injection port for connecting to a fire-fighting device, and the valve body is used to be installed on a box body; the second providing device is used to provide a closure; the assembling device is used to connect the closure to the valve body so that the closure closes the medium injection port; wherein the closure is configured to open the medium injection port when the internal pressure or temperature of the box body reaches a threshold value, so as to release the pressure inside the box body and allow the fire-fighting device to inject fire-fighting medium into the box body through the medium injection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0040] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0041] Figure 2 An exploded view of a battery provided for some embodiments of the present application;

[0042] Figure 3 A schematic diagram of the structure of a valve provided in some embodiments of the present application;

[0043] Figure 4 for Figure 3 An exploded view of the valve is shown;

[0044] Figure 5 for Figure 4 A schematic diagram of the structure of the mounting parts shown;

[0045] Figure 6 for Figure 5 a cross-sectional view of the mounting shown;

[0046] Figure 7 for Figure 4 A partial enlarged view of the body shown;

[0047] Figure 8 A schematic diagram of the structure of a valve provided in some other embodiments of the present application;

[0048] Fig. 9 A schematic diagram of the installation of a valve and a box provided in some embodiments of the present application;

[0049] Fig.10 A flow chart of a method for manufacturing a valve provided in some embodiments of the present application;

[0050] Fig.11 A schematic block diagram of a valve manufacturing device provided in some embodiments of the present application;

[0051] In the drawings, the drawings are not drawn to scale.

[0052] Marking description: 10-box; 11-first part; 12-second part; 13-box wall; 131-installation hole; 20-battery cell; 30-valve; 31-valve body; 311-medium injection port; 3111-docking hole; 3112-connection hole; 312-pressure relief port; 3121-inlet; 3122-outlet; 313-body; 3131-cylinder; 3132-separator; 3133-support part; 3133a-support surface; 3134-barrel; 3135-seat; 3136-seat; 3137-seat; 3138-seat; 3139-seat; 3140-seat; 3141-seat; 3142-seat; 3143-seat; 3144-seat; 3145-seat; 3146-seat; 3147-seat; 3148-seat; 3149-seat; 3150-seat; 3151-seat; 3152-seat; 3153-seat; 3154-seat; 3155-seat; 3156-seat; 3157-seat; 3158-seat; 3159-seat; 3160-seat; 3161-seat; 3162-seat; 3163-seat; 3164-seat; 3165-seat; 3166-seat; 3167-seat; 3168-seat; 3169-seat; 3170-seat; 3171-seat; 3 133b-guide slope; 314-mounting part; 3141-exhaust port; 3142-tube body; 3143-ring body; 3144-connecting body; 3145-boss; 32-closing part; 33-fixing part; 40-collecting part; 100-battery; 200-controller; 300-motor; 1000-vehicle; 2000-manufacturing equipment; 2100-first providing device; 2200-second providing device; 2300-assembling device. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not 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 this application.

[0054] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this 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 drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0055] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0056] 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 a direct connection, or an indirect connection 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 specific circumstances.

[0057] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of 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 exemplary descriptions and should not constitute any limitation to the present application.

[0058] The term "plurality" used in the present application refers to two or more (including two).

[0059] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0060] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0061] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that a large current can pass without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a laminated structure, and the embodiments of the present application are not limited thereto.

[0062] At present, batteries generally include a box and a battery cell contained in the box. The box provides a sealed environment for the battery cell. To ensure the safety of the battery, an explosion-proof valve is provided on the box to release the pressure inside the box when the battery cell thermally runs away.

[0063] The inventors found that when the battery cells inside the battery thermally run away, since the battery cells are located inside the box, the fire-fighting medium can only act on the outside of the box and cannot enter the box, resulting in poor fire-fighting effect and difficulty in controlling the fire.

[0064] In view of this, the embodiment of the present application provides a technical solution, in which a medium injection port for connecting to a fire-fighting device is provided on the valve body, a closure is connected to the valve body and closes the medium injection port, and the closure is configured to open the medium injection port when the internal pressure or temperature of the box reaches a threshold value to release the pressure inside the box and allow the fire-fighting device to inject a fire-fighting medium into the box through the medium injection port. After the battery cell in the box thermally runs away and causes the closure to open the medium injection port, the fire-fighting medium can enter the box through the medium injection port to cool the battery cell in the box, reduce the risk of large-area heat diffusion of the battery cell inside the box, thereby quickly and effectively controlling the fire inside the box and reducing the economic losses caused by the fire.

[0065] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical equipment using batteries.

[0066] Electrical equipment may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, and the like. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, and the like; spacecraft include airplanes, rockets, space shuttles, and spacecraft, and the like; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0067] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0068] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 is provided with a battery 100 inside, and the battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000, for example, the battery 100 can be used as an operating power source of the vehicle 1000.

[0069] The vehicle 1000 may further include a controller 200 and a motor 300 , wherein the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .

[0070] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0071] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery 100 provided in some embodiments of the present application. The battery 100 includes a housing 10 , a battery cell 20 , and a valve 30 . The battery cell 20 is accommodated in the housing 10 , and the valve body 31 is installed on the housing 10 .

[0072] The box 10 is used to accommodate the battery cell 20 to provide a sealed environment for the battery cell 20. The box 10 can be in various shapes, such as a rectangular parallelepiped, a cylinder, etc. Figure 2 In the embodiment, the box body 10 is illustratively a rectangular parallelepiped.

[0073] In some embodiments, the box 10 includes a first portion 11 and a second portion 12, and the first portion 11 and the second portion 12 cover each other. The first portion 11 can be a hollow structure with one side open, and the second portion 12 can also be a hollow structure with one side open. The open side of the second portion 12 covers the open side of the first portion 11, thereby forming the box 10 for accommodating the battery cell 20.

[0074] In actual use, the second part 12 may be located on the top of the first part 11 , the first part 11 may also be called a lower box body 10 , and the second part 12 may also be called an upper box body 10 .

[0075] It should be noted that the valve 30 can be installed in the first part 11 of the box body 10, or can be arranged in the second part 12 of the box body 10. Figure 2 In the embodiment shown in FIG. 1 , the valve 30 is installed on the second portion 12 , for example.

[0076] The battery cell 20 inside the box 10 can be one or more. If there are more than one battery cell 20, the battery cells 20 can be connected in series, in parallel or in mixed connection. Mixed connection means that the battery cells 20 are connected in series and in parallel. The battery cells 20 can be directly connected in series, in parallel or in mixed connection, and then the whole formed by the battery cells 20 can be accommodated in the box 10; of course, the battery cells 20 can be connected in series, in parallel or in mixed connection to form a battery 100 module, and the battery 100 modules can be connected in series, in parallel or in mixed connection to form a whole, and then accommodated in the box 10. The battery cell 20 can be cylindrical, flat, rectangular or in other shapes.

[0077] In some embodiments, the battery 100 may further include a busbar component 40 , and the plurality of battery cells 20 may be electrically connected via the busbar component 40 to achieve series connection, parallel connection, or mixed connection of the plurality of battery cells 20 .

[0078] In the battery 100, the valve 30 on the box 10 may be one or more. Figure 2 In the embodiment, for example, two valves 30 are provided on the box body 10 .

[0079] Please refer to Figure 3 , Figure 3 A schematic diagram of the structure of a valve 30 provided in some embodiments of the present application; the valve 30 includes a valve body 31 and a closure member 32. The valve body 31 is used to be installed on the box body 10, and a medium injection port 311 for connecting to a fire-fighting device (not shown) is provided on the valve body 31; the closure member 32 is connected to the valve body 31 and closes the medium injection port 311, and the closure member 32 is configured to open the medium injection port 311 when the internal pressure or temperature of the box body 10 reaches a threshold value, so as to release the pressure inside the box body 10 and allow the fire-fighting device to inject fire-fighting medium into the box body 10 through the medium injection port 311.

[0080] The medium injection port 311 can be connected to a fire-fighting device so that the fire-fighting medium can be injected into the box 10 through the fire-fighting device. When the battery cell 20 in the box 10 thermally runs away and the internal pressure or temperature of the box 10 reaches a threshold value, the closure 32 opens the medium injection port 311, and the pressure in the box 10 can be released through the medium injection port 311. After the medium injection port 311 is opened, the fire-fighting device can be connected to the medium injection port 311, and the fire-fighting medium provided by the fire-fighting device can enter the box 10 through the medium injection port 311 to cool the battery cell 20 in the box 10, reduce the risk of large-area heat diffusion of the battery cell 20 in the box 10, thereby quickly and effectively controlling the fire inside the box 10 and reducing the economic losses caused by the fire.

[0081] It can be seen from the above content that the valve 30 provided in the embodiment of the present application has two functions. First, when the internal pressure or temperature of the box 10 reaches a threshold value, the pressure inside the box 10 is released to reduce the risk of explosion due to excessive internal pressure of the box 10; second, after the medium injection port 311 is opened, the fire-fighting device can be connected to the medium injection port 311, and the valve 30 serves to connect the fire-fighting device and the box 10, so that the fire-fighting medium provided by the fire-fighting medium can enter the box 10 through the valve 30.

[0082] In the embodiment of the present application, when the internal pressure or temperature of the box body 10 reaches a threshold value, the closure member 32 opens the medium injection port 311. The closure member 32 may also open the medium injection port 311 by moving relative to the valve body 31. For example, the closure member 32 is a movable plate, and the closure member 32 is movably arranged on the valve body 31. When the internal pressure or temperature of the box body 10 reaches a threshold value, the closure member 32 moves under the action of the driving mechanism, thereby opening the medium injection port 311. The closure member 32 may also open the medium injection port 311 by being destroyed, for example, Figure 3 As shown, the sealing member 32 is an explosion-proof membrane, which can be destroyed under the action of the internal pressure of the box body 10 or can be destroyed by melting in a high temperature environment, thereby opening the medium injection port 311 .

[0083] In the embodiment of the present application, the fire-fighting medium may be a medium capable of cooling and extinguishing fires. The fire-fighting medium may be a gas, such as an inert gas or carbon dioxide gas. The fire-fighting medium may also be a liquid, such as water.

[0084] The fire fighting device is a device for providing fire fighting medium, which can be of various structures, and the embodiments of the present application are not limited thereto. Exemplarily, the fire fighting device has a docking portion (not shown) for docking with the medium injection port 311. The docking portion can be a fire fighting gun, which is used to connect with the medium injection port 311, and the fire fighting medium sprayed from the fire fighting gun can enter the box body 10 through the medium injection port 311.

[0085] In some embodiments, please refer to Figure 4 , Figure 4 for Figure 3 As shown in the exploded view of the valve 30, a pressure relief port 312 is also provided on the valve body 31, and the closure member 32 closes the pressure relief port 312. The closure member 32 is configured to open the pressure relief port 312 and the medium injection port 311 to release the pressure inside the box body 10 when the internal pressure or temperature of the box body 10 reaches a threshold value.

[0086] The pressure relief port 312 and the medium injection port 311 can be opened through the closure 32. After the closure 32 opens the pressure relief port 312 and the medium injection port 311, the pressure inside the box 10 can be released through the pressure relief port 312 and the medium injection port 311. The fire-fighting medium provided by the fire-fighting device can also enter the box 10 through the medium injection port 311 and the pressure relief port 312 in turn to control the fire situation inside the box 10.

[0087] It should be noted that the closure member 32 closes the pressure relief port 312, which means that when the closure member 32 is not damaged, foreign matter (dust particles, fire-fighting medium, etc.) cannot enter the box body 10 through the pressure relief port 312. Similarly, the closure member 32 closes the medium injection port 311, which means that when the closure member 32 is not damaged, foreign matter (dust particles, fire-fighting medium, etc.) cannot enter the box body 10 through the medium injection port 311.

[0088] The valve body 31 may be an integral structure or a split structure.

[0089] In some embodiments, the valve body 31 is a split structure, the valve body 31 includes a body 313 and a mounting member 314, the pressure relief port 312 is provided on the body 313, the closing member 32 is connected to the body 313, the mounting member 314 is installed on the body 313, and the medium injection port 311 is provided on the mounting member 314. This valve body 31 has a simple structure, is easy to arrange the closing member 32, and the mounting member 314 can be replaced according to needs.

[0090] In some embodiments, the pressure relief port 312 includes an inlet 3121 and an outlet 3122. The inlet 3121 is used to communicate with the medium injection port 311 when the closure 32 opens the pressure relief port 312 and the medium injection port 311. The outlet 3122 is used to discharge the gas in the box body 10 when the fire-fighting medium enters the box body 10 through the medium injection port 311 and the inlet 3121 in sequence.

[0091] The inlet 3121 and the outlet 3122 are part of the pressure relief port 312. When the pressure inside the box 10 is released, the discharge inside the box 10 can be discharged outside the box 10 through the inlet 3121 and the outlet 3122. When the closure 32 opens the pressure relief port 312 and the medium injection port 311, the inlet 3121 is connected with the medium injection port 311, and the firefighting medium provided by the firefighting device can enter the box 10 through the medium injection port 311 and the inlet 3121 in sequence. At the same time, the gas inside the box 10 can be discharged outside the box 10 through the outlet 3122, so as to achieve the purpose of balancing the pressure inside and outside the box 10 and reduce the risk that the pressure inside the box 10 gradually increases, which makes it difficult for the firefighting medium provided by the firefighting device to enter the box 10.

[0092] The inlet 3121 and the outlet 3122 in the pressure relief port 312 may be one or more.

[0093] In some embodiments, Figure 4 As shown, the pressure relief port 312 includes a plurality of inlets 3121 distributed at intervals in the circumferential direction and a plurality of outlets 3122 distributed at intervals in the circumferential direction. The plurality of outlets 3122 are located at the periphery of the plurality of inlets 3121 .

[0094] The inlets 3121 and the outlets 3122 are both circumferentially spaced and distributed in a plurality, so that the firefighting medium can enter the box body 10 more quickly through the plurality of inlets 3121, and the gas in the box body 10 can be discharged to the outside of the box body 10 more quickly through the plurality of outlets 3122. The plurality of outlets 3122 are located at the periphery of the plurality of inlets 3121, and are reasonably arranged, so that in the process of the firefighting medium continuously entering the box body 10, it is more conducive to the gas in the box body 10 to be discharged to the outside of the box body 10 through the plurality of outlets 3122.

[0095] The multiple outlets 3122 mentioned above are located on the outer circumference of the multiple inlets 3121. It can be understood that the outlets 3122 are located outside the inlets 3121 in the radial direction. For example, the multiple outlets 3122 are distributed in a first circumference, the multiple inlets 3121 are distributed in a second circumference, and the first circumference and the second circumference are arranged concentrically. In the radial direction of the first circumference and the second circumference, the outlets 3122 are located outside the inlets 3121, and the inlets 3121 are closer to the centers of the first circumference and the second circumference than the outlets 3122. Figure 4 In the embodiment, for example, there are four inlets 3121 and four outlets 3122 in the pressure relief port 312 .

[0096] Exemplarily, the body 313 includes a cylinder 3131 and a separator 3132. The cylinder 3131 is a hollow structure with two axial ends open. The separator 3132 is fixed in the cylinder 3131. The separator 3132 is a plate-like structure, and the pressure relief port 312 is provided on the separator 3132. Taking the closure member 32 as an explosion-proof membrane as an example, the closure member 32 can be fixed on the separator 3132 to close the inlet 3121 and the outlet 3122 of the pressure relief port 312. When the internal pressure or temperature of the box 10 reaches a threshold value, the closure member 32 is destroyed, thereby opening the inlet 3121 and the outlet 3122.

[0097] It should be noted that, in other embodiments, the pressure relief port 312 may only have the inlet 3121 , and the box body 10 releases pressure through the inlet 3121 , and the firefighting medium also enters the box body 10 through the inlet 3121 .

[0098] In some embodiments, please refer to Figure 5 , Figure 5 for Figure 4 The mounting member 314 is provided with an exhaust port 3141 which is independent of the medium injection port 311. When the closure member 32 opens the pressure relief port 312 and the medium injection port 311, the gas can be discharged to the outside of the box body 10 through the outlet 3122 and the exhaust port 3141 in sequence.

[0099] The setting of the exhaust port 3141 on the mounting member 314 can reduce the blocking effect of the mounting member 314 on the outlet 3122 after being installed on the main body 313, so that the gas in the box body 10 can be discharged to the outside of the box body 10 through the outlet 3122 and the exhaust port 3141 in sequence, thereby improving the smoothness of the gas being discharged to the outside of the box body 10, and allowing the gas in the box body 10 to be discharged more quickly.

[0100] In some embodiments, the mounting member 314 includes a tube body 3142, a ring body 3143, and a connector 3144. The medium injection port 311 is provided in the tube body 3142, and the tube body 3142 is used to connect with the main body 313. The ring body 3143 is sleeved outside the tube body 3142, and the connector 3144 connects the tube body 3142 and the ring body 3143 through the connector 3144. An exhaust port 3141 is formed between the inner peripheral wall of the ring body 3143 and the outer peripheral wall of the tube body 3142.

[0101] The medium injection port 311 is arranged in the tube body 3142, and the exhaust port 3141 is formed between the inner circumferential wall and the outer circumferential wall of the ring body 3143, so that the medium injection port 311 and the exhaust port 3141 are independent of each other. The mounting member 314 of this structure can make the exhaust gas circumferentially distributed on the outer circumference of the medium injection port 311, and adapt to the multiple outlets 3122 of the pressure relief port 312 being located on the outer circumference of the multiple inlets 3121, so that after the mounting member 314 is connected to the body 313, the medium injection port 311 located on the inner circumference corresponds to the multiple inlets 3121 located on the inner circumference, and the exhaust port 3141 located on the outer circumference corresponds to the multiple outlets 3122 located on the outer circumference, and the layout is reasonable, so that the medium injection port 311 and the air inlet form a straight-through channel for the fire-fighting medium to enter the box body 10, and the outlet 3122 and the exhaust port 3141 form a straight-through channel for the gas in the box body 10 to be discharged.

[0102] Exemplarily, the inner diameter of the ring body 3143 is greater than the outer diameter of the tube body 3142 , and the ring body 3143 is coaxially arranged with the tube body 3142 .

[0103] The connecting body 3144 connected between the ring body 3143 and the tube body 3142 can be one or more. Figure 5 In the embodiment, for example, the connectors 3144 are multiple and circumferentially distributed between the ring body 3143 and the tube body 3142 to enhance the firmness of both the ring body 3143 and the tube body 3142 .

[0104] For example, please refer to Figure 6 , Figure 6 for Figure 5In the cross-sectional view of the mounting member 314 shown, the tube body 3142 is a hollow structure with both ends open, and the medium injection port 311 is a channel inside the tube body 3142. A boss 3145 is provided at one axial end of the tube body 3142, and the medium injection port 311 passes through the boss 3145. The boss 3145 is used to abut against the closing member 32 fixed on the partition 3132 after the mounting member 314 is connected to the body 313. The closing member 32 is located between the boss 3145 and the partition 3132. After the closing member 32 is destroyed and the medium injection port 311 and the pressure relief port 312 are opened, the medium injection port 311 is connected to the inlet 3121 of the pressure relief port 312.

[0105] In some embodiments, the medium injection port 311 includes a plurality of coaxially arranged docking holes 3111 of different diameters for docking with a docking portion of a fire-fighting device, so as to accommodate docking portions of different diameters.

[0106] Taking the docking part as an example, when the fire gun is connected to the medium injection port 311 , the fire gun is partially inserted into the docking hole 3111 that matches it.

[0107] The plurality of docking holes 3111 form a stepped hole structure. Exemplarily, the medium injection port 311 also includes a connecting hole 3112 located in the boss 3145, the connecting hole 3112 is connected to the docking hole 3111 with the smallest diameter among the plurality of docking holes 3111, and the hole diameter of the connecting hole 3112 is smaller than the hole diameter of the docking hole 3111 with the smallest diameter.

[0108] In some embodiments, the mounting member 314 is plugged into the body 313 to achieve quick assembly and disassembly of the two.

[0109] The mounting member 314 is plugged into the body 313 , and the mounting member 314 can be plugged into the body 313 , or the body 313 can be plugged into the mounting member 314 .

[0110] In some embodiments, please refer to Figure 4 The mounting member 314 is inserted into the body 313 to reduce the space outside the body 313 occupied by the mounting member 314, so that the overall structure of the valve 30 is more compact.

[0111] Exemplarily, the mounting member 314 is coaxially disposed with the body 313 .

[0112] The ring body 3143 of the mounting member 314 is inserted into the cylinder body 3131 of the main body 313 .

[0113] In some embodiments, a plurality of support portions 3133 are provided at intervals in the circumferential direction of the body 313, and the support portions 3133 are used to support the outer circumferential surface of the mounting member 314. That is, after the mounting member 314 is inserted into the body 313, each support portion 3133 will support the outer circumferential surface of the mounting member 314, thereby realizing the positioning of the mounting member 314 and ensuring that the mounting member 314 has good stability after being inserted into the body 313.

[0114] The plurality of support portions 3133 are circumferentially spaced apart and arranged on the inner wall of the cylinder 3131 of the main body 313. After the mounting member 314 is inserted into the main body 313, each support portion 3133 is supported on the outer circumferential surface of the ring body 3143 of the mounting member 314.

[0115] In some embodiments, please refer to Figure 7 , Figure 7 for Figure 4 The partially enlarged view of the main body 313 shown in the figure shows that the support portion 3133 includes a support surface 3133a and a guide slope 3133b connected to the support surface 3133a, and the guide slope 3133b is used to guide the mounting member 314 into the main body 313 so that the support surface 3133a contacts the outer peripheral surface of the mounting member 314.

[0116] The guiding slope 3133 b of the supporting portion 3133 guides the mounting member 314 well during the process of inserting the mounting member 314 into the main body 313 , so that the mounting member 314 can more easily enter the main body 313 and contact the supporting surface 3133 a of the supporting portion 3133 .

[0117] The supporting surface 3133 a is used to contact the outer peripheral surface of the ring body 3143 of the mounting member 314 .

[0118] In some embodiments, please refer to Figure 8 , Figure 8 This is a schematic structural diagram of a valve 30 provided in some other embodiments of the present application. The valve 30 also includes a fixing member 33. The fixing member 33 is used to connect with the valve body 31 to secure the valve body 31 to the box body 10.

[0119] Optionally, see Fig. 9 , Fig. 9 The schematic diagram of the installation of the valve 30 and the box body 10 provided in some embodiments of the present application, the fixing member 33 is detachably connected to the valve body 31, and the fixing member 33 is used to cooperate with the valve body 31 to clamp the box wall 13 of the box body 10 to stabilize the valve body 31 on the box body 10. When the fixing member 33 and the valve body 31 are connected together, the valve 30 is installed on the box body 10, and when the fixing member 33 is removed from the valve body 31, the valve body 31 can be removed from the box body 10, which facilitates the disassembly and installation of the valve 30.

[0120] Exemplarily, the fixing member 33 is a nut, an external thread is provided on the main body 313 of the valve body 31, a mounting hole 131 is provided on the box wall 13 of the box body 10 for the main body 313 to pass through, the main body 313 partially passes through the mounting hole 131, the fixing member 33 is screwed to the part of the main body 313 provided with the external thread, the fixing member 33 is located on the inner side of the box wall 13, and the part of the main body 313 located on the outer side of the box wall 13 cooperates with the fixing member 33 to clamp the box wall 13 of the box body 10, thereby fixing the valve body 31 to the box body 10.

[0121] Of course, the fixing member 33 may also be other structures. For example, the fixing member 33 is a screw. A through hole for the screw to pass through is provided on the box wall 13 of the box body 10. The fixing member 33 passes through the through hole and is screwed to the main body 313 of the valve body 31, thereby securing the valve body 31 to the box body 10.

[0122] In other embodiments, the valve 30 may also be fixed to the housing 10 in other ways. For example, the body 313 of the valve 30 is directly screwed to a threaded hole on the housing 10 .

[0123] Please refer to Fig.10 , Fig.10 A flowchart of a method for manufacturing a valve 30 provided in some embodiments of the present application, the method for manufacturing the valve 30 comprising:

[0124] S100: providing a valve body 31, on which a medium injection port 311 for connecting to a fire-fighting device is provided, and the valve body 31 is used to be installed in the box body 10;

[0125] S200: providing a closure member 32;

[0126] S300 : Connect the sealing member 32 to the valve body 31 so that the sealing member 32 seals the medium injection port 311 .

[0127] The closure 32 is configured to open the medium injection port 311 when the internal pressure or temperature of the box 10 reaches a threshold value to release the pressure inside the box 10 and allow the fire fighting device to inject fire fighting medium into the box 10 through the medium injection port 311 .

[0128] The relevant structure of the valve 30 manufactured by the above manufacturing method can refer to the valve 30 provided in the above embodiments.

[0129] Please refer to Fig.11 , Fig.11 It is a schematic block diagram of a manufacturing device 2000 for a valve 30 provided in some embodiments of the present application, and the manufacturing device 2000 includes a first providing device 2100 , a second providing device 2200 and an assembling device 2300 .

[0130] The first providing device 2100 is used to provide a valve body 31, on which a medium injection port 311 for connecting to a fire fighting device is provided, and the valve body 31 is used to be installed on the box body 10. The second providing device 2200 is used to provide a closing member 32. The assembling device 2300 is used to connect the closing member 32 to the valve body 31 so that the closing member 32 closes the medium injection port 311.

[0131] The closure 32 is configured to open the medium injection port 311 when the internal pressure or temperature of the box 10 reaches a threshold value to release the pressure inside the box 10 and allow the fire fighting device to inject fire fighting medium into the box 10 through the medium injection port 311 .

[0132] The relevant structure of the valve 30 manufactured by the above-mentioned manufacturing equipment 2000 can refer to the valve 30 provided in the above-mentioned embodiments.

[0133] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0134] The above embodiments are only used to illustrate the technical solution of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A valve, comprising: A valve body, used for installation on the box body, wherein the valve body is provided with a medium injection port for connecting with a fire-fighting device; as well as a closure member connected to the valve body and closing the medium injection port, wherein the closure member is configured to open the medium injection port when the internal pressure or temperature of the box reaches a threshold value, so as to release the pressure inside the box and allow the fire fighting device to inject fire fighting medium into the box through the medium injection port; The valve body is provided with a pressure relief port, the closure member closes the pressure relief port, and the closure member is configured to open the pressure relief port and the medium injection port to release the pressure inside the box when the internal pressure or temperature of the box reaches a threshold value; The valve body comprises: A body, the pressure relief port is arranged on the body, and the closure is connected to the body; The mounting member is mounted on the main body, and the medium injection port is arranged on the mounting member.

2. The valve according to claim 1, wherein: The pressure relief port includes an inlet and an outlet; The inlet is used to communicate with the medium injection port when the closure member opens the pressure relief port and the medium injection port; The outlet is used to discharge the gas in the box when the fire fighting medium enters the box through the medium injection port and the inlet in sequence.

3. The valve according to claim 2, wherein: The pressure relief port includes a plurality of inlets distributed at intervals in the circumferential direction and a plurality of outlets distributed at intervals in the circumferential direction; The plurality of outlets are located at the periphery of the plurality of inlets.

4. The valve according to claim 2, wherein: The mounting member is provided with an exhaust port which is independent of the medium injection port; When the sealing member opens the pressure relief port and the medium injection port, the gas can be discharged out of the box through the outlet and the exhaust port in sequence.

5. The valve according to claim 4, wherein: The mounting member comprises: A tube body, wherein the medium injection port is arranged in the tube body, and the tube body is used to be connected to the main body; A ring body, sleeved outside the tube body; and A connector, through which the tube body and the ring body are connected; Wherein, the exhaust port is formed between the inner peripheral wall of the ring body and the outer peripheral wall of the tube body.

6. The valve according to claim 1, wherein: The mounting piece is plug-fitted with the body.

7. The valve according to claim 6, wherein: The mounting piece is inserted into the body.

8. The valve according to claim 7, wherein: A plurality of support parts are arranged at intervals in the circumferential direction of the main body, and the support parts are used to support the outer circumferential surface of the mounting member.

9. The valve according to claim 8, wherein: The support portion includes a support surface and a guide slope connected to the support surface; The guide slope is used to guide the mounting member into the body so that the support surface contacts the outer peripheral surface of the mounting member.

10. The valve according to claim 1, wherein: The fire fighting device has a docking portion, and the medium injection port includes a plurality of coaxially arranged docking holes with different diameters for docking with the docking portion.

11. The valve according to any one of claims 1 to 10, wherein: The valve further comprises: The fixing member is used to be connected with the valve body so as to fix the valve body to the box body.

12. The valve according to claim 11, wherein The fixing member is detachably connected to the valve body, and is used to cooperate with the valve body to clamp the box wall of the box body.

13. A battery comprising: Box; A battery cell is contained in the box; as well as According to the valve according to any one of claims 1 to 12, the valve body is installed on the box body.

14. An electrical device comprising the battery according to claim 13.

15. A method for manufacturing a valve, comprising: Providing a valve body, the valve body is provided with a medium injection port for connecting to a fire-fighting device, and the valve body is used to be installed on a box body; Provide closures; Connecting the sealing member to the valve body so that the sealing member seals the medium injection port; The closure member is configured to open the medium injection port when the internal pressure or temperature of the box reaches a threshold value, so as to release the pressure inside the box and allow the fire fighting device to inject the fire fighting medium into the box through the medium injection port; The valve body is provided with a pressure relief port, the closure member closes the pressure relief port, and the closure member is configured to open the pressure relief port and the medium injection port to release the pressure inside the box when the internal pressure or temperature of the box reaches a threshold value; The valve body comprises: A body, the pressure relief port is arranged on the body, and the closure is connected to the body; The mounting member is mounted on the main body, and the medium injection port is arranged on the mounting member.

16. A valve manufacturing device, comprising: A first providing device is used to provide a valve body, the valve body is provided with a medium injection port for connecting to a fire-fighting device, and the valve body is used to be installed in a box body; A second providing device for providing a closure member; and An assembling device, used to connect the closure member to the valve body so that the closure member closes the medium injection port; The closure member is configured to open the medium injection port when the internal pressure or temperature of the box reaches a threshold value, so as to release the pressure inside the box and allow the fire fighting device to inject the fire fighting medium into the box through the medium injection port; The valve body is provided with a pressure relief port, the closure member closes the pressure relief port, and the closure member is configured to open the pressure relief port and the medium injection port to release the pressure inside the box when the internal pressure or temperature of the box reaches a threshold value; The valve body comprises: A body, the pressure relief port is arranged on the body, and the closure is connected to the body; The mounting member is mounted on the main body, and the medium injection port is arranged on the mounting member.

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