WO2023098596A1 - 防爆阀 - Google Patents

防爆阀 Download PDF

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Publication number
WO2023098596A1
WO2023098596A1 PCT/CN2022/134480 CN2022134480W WO2023098596A1 WO 2023098596 A1 WO2023098596 A1 WO 2023098596A1 CN 2022134480 W CN2022134480 W CN 2022134480W WO 2023098596 A1 WO2023098596 A1 WO 2023098596A1
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WO
WIPO (PCT)
Prior art keywords
valve
opening
explosion
valve body
main body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/134480
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English (en)
French (fr)
Inventor
黄祥斌
吴自强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Publication of WO2023098596A1 publication Critical patent/WO2023098596A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • H01M50/333—Spring-loaded vent valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the application belongs to the field of valves, in particular to an explosion-proof valve.
  • explosion-proof valves as a pressure relief device, are widely used in various industries. For example, installing an explosion-proof valve in the battery pack can effectively avoid explosion accidents caused by a sharp increase in the pressure inside the battery pack.
  • the setting of the explosion-proof valve may easily cause external moisture to enter the battery pack, resulting in damage to the electronic components in the battery pack.
  • An embodiment of the present application provides an explosion-proof valve to solve the problem that external moisture enters equipment such as a battery pack along the explosion-proof valve, causing damage to electronic components.
  • an explosion-proof valve including:
  • valve body has an accommodation chamber, the first end surface of the valve body is provided with a first opening, the second end surface of the valve body is provided with a second opening, and the first opening, the accommodation chamber and the second opening are connected in sequence;
  • Hygroscopic piece the hygroscopic piece is arranged in the accommodation chamber;
  • the valve core assembly is connected with the valve body, and the valve core assembly slides between the first position and the second position relative to the valve body. position, the spool assembly moves away from the first opening.
  • the explosion-proof valve provided by the embodiment of the present application includes a valve body, a hygroscopic member, and a valve core assembly, the valve body has an accommodation cavity, the first end surface of the valve body is provided with a first opening, and the second end surface of the valve body is provided with a second opening , the first opening, the accommodating chamber and the second opening are communicated in sequence, the moisture-absorbing member is arranged in the accommodating chamber, the valve core assembly is connected with the valve body, and the valve core assembly slides between the first position and the second position relative to the valve body. In the first position, the valve core assembly is covered on the first opening, and in the second position, the valve core assembly moves away from the first opening.
  • the sliding connection between the valve body and the valve core assembly can realize the process of explosion-proof and pressure relief.
  • the moisture absorbing member can absorb the moisture entering the containing cavity, so as to avoid moisture damage to the battery, for example.
  • the hygroscopic element needs to be replaced, there is no need to disassemble the battery pack and other equipment, thereby helping to improve the replacement efficiency of the hygroscopic element.
  • the explosion-proof valve further includes a balance valve assembly, a third opening is provided on the third end surface of the valve body, and the third opening communicates with the containing chamber, and the balance valve assembly is fixedly connected to the valve body in the third opening.
  • the third end surface of the valve body is provided with a third opening, and a balance valve assembly is arranged in the third opening, which can balance the internal and external pressure of the explosion-proof valve through the balance valve assembly when the internal pressure difference of the explosion-proof valve is small, and improve the working efficiency of the explosion-proof valve. safety.
  • the balance valve assembly includes a valve plate, a protective frame fixedly connected to the valve body is arranged in the third opening, and the valve plate is arranged on a side of the protective frame away from the accommodating cavity;
  • the valve plate includes a valve body and a movable part that are movably connected.
  • the valve body is fixedly connected to the protective frame. .
  • This embodiment enables the hygroscopic member to fully absorb the moisture in the air entering the accommodating cavity, prevents the moisture from reaching the inside of the equipment such as the battery pack, and effectively protects the electronic components inside the equipment such as the battery pack.
  • the balance valve assembly further includes a limit frame, and the limit frame presses the main body of the valve plate onto the protective frame;
  • the main body of the valve plate can be reliably pressed on the protective frame, and a corresponding movement space can be provided for the movable part, thereby helping to improve the working reliability of the balance valve assembly.
  • the explosion-proof valve also includes a waterproof and breathable membrane and pressure strips;
  • the waterproof breathable membrane and the bead are arranged on the side of the limiting frame away from the valve plate, the bead is fixedly connected with the valve body, and the bead presses the waterproof and breathable membrane on the limit frame.
  • This embodiment can reduce the moisture content reaching the accommodating chamber, thereby also helping to improve the service life of the hygroscopic element.
  • valve body includes a main body and a boss part, and the boss part is fixedly connected to the peripheral surface of the main body;
  • first end surface and the second end surface are two opposite end surfaces of the main body in the height direction, the peripheral surface of the main body is located between the first end surface and the second end surface, and the third end surface is the part of the boss part away from the main body. end face.
  • the third opening can have a larger axial length, thereby facilitating the assembly of components such as the balance valve assembly in the third opening.
  • the valve body includes a main body and a guide part, the accommodating cavity is located in the main body, the guiding part is fixedly connected to the main body in the accommodating cavity, and the valve core assembly is slidably connected to the guiding part.
  • the valve body includes a guide portion, which can be used to guide the movement of the valve core assembly, thereby helping to improve the reliability of the valve core assembly moving between the first position and the second position.
  • valve core assembly includes a push rod, a cover plate and an elastic member, and the push rod is fixedly connected to the cover plate;
  • the push rod is slidably connected in the guide hole, and the two ends of the elastic member are respectively connected to the guide part and the push rod. set at the first opening.
  • This embodiment can improve the working reliability of the explosion-proof valve.
  • valve body further includes a limiting part, which is fixedly connected to the main body in the accommodating cavity, and the limiting part presses the hygroscopic component on the inner wall of the accommodating cavity.
  • the setting of the limiting part helps to better fix the hygroscopic component and the valve body, and improves the stability of the overall structure of the explosion-proof valve.
  • the explosion-proof valve further includes a tray, which is fixedly connected with the valve body at the second opening.
  • a tray is provided at the second opening to connect with the valve body, so that structures such as the hygroscopic component can be confined in the accommodating cavity, and the stability of the overall structure of the explosion-proof valve can be improved.
  • Fig. 1 is the structural representation of explosion-proof valve in the related art
  • Fig. 2 is a schematic diagram of the three-dimensional structure of the explosion-proof valve provided by the embodiment of the present application;
  • Fig. 3 is a top view of the explosion-proof valve provided by the embodiment of the present application.
  • Fig. 4 is a sectional view along A-A direction in Fig. 3;
  • FIG. 5 is a partial detailed view of the balance valve assembly
  • Fig. 6 is a structural schematic diagram of the valve plate in the balance valve assembly.
  • Fig. 1 Shown in Fig. 1: 10-valve body, 20-spool assembly, 21-first opening, 30-spring, 40-sealing washer.
  • 2 to 6 show: 100-valve body, 110-accommodating chamber, 121-first end face, 122-first opening, 131-second end face, 132-second opening, 141-third end face, 142 -Third opening, 151-main body, 152-boss, 153-guide, 154-skirt, 155-limiting part, 200-absorbent, 300-spool assembly, 310-push rod, 320- Cover plate, 330-elastic part, 400-balance valve assembly, 410-valve plate, 411-valve plate main body, 412-movable part, 413-normally open hole, 420-protective frame, 430-limiting frame, 510- Waterproof and breathable membrane, 520-layer, 600-tray.
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two), and “multiple pieces” refers to More than two pieces (including two pieces).
  • explosion-proof valves are widely used in various industries, such as battery packs, pipelines or instruments. To simplify the description, the following will mainly take the application of the explosion-proof valve in the battery pack as an example.
  • FIG. 1 is a structural diagram of an explosion-proof valve in the related art, which includes a valve body 10, a valve core assembly 20, a spring 30, a sealing washer 40, and the like.
  • valve body 10 is provided with openings (not shown in the figure), under normal working conditions, such as when the internal pressure of the battery pack is low, the valve core assembly 20 is covered by the valve body 10 under the action of the spring 30 on the opening. And when the internal pressure of the battery pack is higher than a pressure threshold, the internal and external pressure difference acts on the valve core assembly 20, which can overcome the elastic force of the spring 30, so that the valve core assembly 20 moves away from the opening of the valve body 10 and passes through the opening. Release the pressure in the battery pack.
  • the opening in the valve core assembly 20 can be called the first opening 21, the valve body 10
  • the opening on the top can be referred to as a second opening.
  • the first opening 21 can be used to balance the pressure difference inside and outside the battery pack.
  • valve core assembly 20 When the pressure in the battery pack is higher than a pressure threshold, the valve core assembly 20 will move away from the second opening and release the pressure through the second opening. When the internal and external pressure difference of the battery pack is small, the internal and external pressure difference is balanced through the first opening 21 .
  • the inside of the battery pack may communicate with the external environment through the first opening 21 or the second opening, so that moisture in the external environment may enter the inside of the battery pack.
  • the inside of the battery pack will exchange with the outside air, and the air in the environment contains a certain proportion of moisture. condensation.
  • Moisture entering the inside of the battery pack will adversely affect the operation of the electronic components inside the battery pack, and even cause damage to the electronic components.
  • a hygroscopic agent is usually provided inside the battery pack to avoid damage to electronic components caused by external moisture.
  • the moisture absorption capacity of the hygroscopic agent has an upper limit, when the hygroscopic agent is fully absorbed, the hygroscopic agent needs to be replaced.
  • the battery pack needs to be disassembled for replacement, which leads to low replacement efficiency of the hygroscopic agent.
  • the embodiment of the present application provides an explosion-proof valve, as shown in Figure 2 to Figure 4, the explosion-proof valve includes:
  • the valve body 100 has an accommodating chamber 110 in the valve body 100, the first end surface 121 of the valve body 100 is provided with a first opening 122, the second end surface 131 of the valve body 100 is provided with a second opening 132, the first opening 122, the accommodating chamber 110 and the second opening 132 communicate in turn;
  • Hygroscopic piece 200 the hygroscopic piece 200 is arranged in the accommodation cavity 110;
  • valve core assembly 300 The valve core assembly 300, the valve core assembly 300 is connected with the valve body 100, the valve core assembly 300 slides between the first position and the second position relative to the valve body 100, in the first position, the valve core assembly 300 is covered by the second An opening 122 , when in the second position, the spool assembly 300 moves away from the first opening 122 .
  • the explosion-proof valve can be applied to equipment such as battery packs, pipes, or instruments, and is not specifically limited here. To simplify the description, the following will mainly illustrate the application of the explosion-proof valve in the battery pack as an example.
  • the valve body 100 of the explosion-proof valve can be constructed with a certain strength and rigidity, so as to support the valve core assembly 300 and other structures, and has a certain ability to resist external damage.
  • the valve body 100 may have an accommodating chamber 110, a first end surface 121 and a second end surface 131, the first end surface 121 is provided with a first opening 122, the second end surface 131 is provided with a second opening 132, the first opening 122, the accommodating chamber 110 and the second opening 132 communicate in sequence.
  • the second end face 131 may be an end face for assembling with the battery pack, and the shape of the end face may match the shape of the battery pack, so that the explosion-proof valve and the battery pack can be reliably connected. assembly. When the two are assembled, the inside of the battery pack can communicate with the receiving chamber 110 through the second opening 132 .
  • the first opening 122 in the first end surface 121 can be used to communicate the receiving chamber 110 with the external environment of the battery pack.
  • the first end surface 121 may be an opposite surface to the second end surface 131 , or may be an adjacent surface to the second end surface 131 , which is not specifically limited here.
  • the shapes of the first opening 122 and the second opening 132 can be rectangular, circular or other shapes, which can be designed according to actual needs.
  • the second opening 132 , the accommodating chamber 110 and the first opening 122 may constitute a passage for pressure relief inside the battery pack.
  • a hygroscopic member 200 may be disposed in the housing chamber 110 of the valve body 100, and the hygroscopic member 200 may include an organic or inorganic hygroscopic agent, which is not limited here.
  • the hygroscopic element 200 may include a hygroscopic agent and a porous container, and the hygroscopic agent may be filled in the porous container and fixed on the valve body 100 together with the porous container, or placed in the accommodating cavity 110 .
  • the hygroscopic element 200 may also include a hygroscopic agent and a binder resin, and the hygroscopic agent and the adhesive resin are bonded to form the hygroscopic element 200 with a relatively fixed shape, and assembled into the accommodating cavity 110 .
  • the valve core assembly 300 is slidingly connected with the valve body 100 , and the valve core assembly 300 slides between a first position and a second position relative to the valve body 100 .
  • valve core assembly 300 When the valve core assembly 300 is at the first position, the valve core assembly 300 can cover the first opening 122 .
  • the spool assembly 300 can be a structure with certain strength and rigidity. When the cover is installed on the first opening 122, it can form a seal to the first opening 122, preventing the interior of the battery pack from communicating with the external space through the first opening 122.
  • valve core assembly 300 When the valve core assembly 300 is in the second position, the valve core assembly 300 can move away from the first opening 122 , so that the first opening 122 is exposed, and the inside of the battery pack can communicate with the external space through the first opening 122 . Combined with some practical application scenarios, when the pressure inside the battery pack is high, the pressure difference inside and outside the battery pack can push the spool assembly 300 away from the first opening 122 , thereby releasing the pressure on the battery pack.
  • the valve core assembly 300 may be provided with the above-mentioned first opening for balancing the internal and external pressure of the battery pack, or may not be provided with the first opening, which is not specifically limited here.
  • openings for balancing the internal and external pressures of the battery pack may be provided at other positions of the valve body 100 .
  • the explosion-proof valve includes a valve body 100, a hygroscopic member 200, and a valve core assembly 300.
  • the valve body 100 has a housing cavity 110, and the first end surface 121 of the valve body 100 is provided with a first opening 122.
  • the valve body 100 The second end surface 131 of the second end surface 131 is provided with a second opening 132, the first opening 122, the accommodating chamber 110 and the second opening 132 are connected in sequence, the hygroscopic member 200 is arranged in the accommodating chamber 110, the valve core assembly 300 is connected with the valve body 100, and the valve core The assembly 300 slides relative to the valve body 100 between a first position and a second position.
  • the valve core assembly 300 In the first position, the valve core assembly 300 covers the first opening 122. In the second position, the valve core assembly 300 moves away from the first opening 122. One opening 122 .
  • the sliding connection between the valve body 100 and the valve core assembly 300 can realize the process of explosion-proof pressure relief, and when the valve core assembly 300 moves away from the first opening 122, the moisture-absorbing member 200 can absorb moisture entering the accommodation chamber 110 , to prevent moisture from damaging the internal components of the device such as the battery pack, and at the same time, when the hygroscopic member 200 needs to be replaced, there is no need to disassemble the device such as the battery pack, thereby helping to improve the replacement efficiency of the hygroscopic member 200 .
  • the explosion-proof valve further includes a balance valve assembly 400, the third end surface 141 of the valve body 100 is provided with a third opening 142, and the balance valve assembly 400 is fixed to the valve body 100 in the third opening 142 connect.
  • the balance valve assembly 400 may be a structure for balancing the internal and external pressure of the battery pack.
  • the balance valve assembly 400 may be a single valve plate, or may also be a structure including a valve seat and a valve plate, etc., which is not specifically limited here.
  • the valve core assembly 300 can be kept at the first position, and the first opening 122 can be kept closed. At this time, the pressure inside and outside the battery pack can be balanced by the balance valve assembly 400 .
  • the third end surface 141 of the valve body 100 and the first end surface 121 may be the same end surface or different end surfaces.
  • a third opening 142 is disposed on the third end surface 141 , and the third opening 142 communicates with the receiving cavity 110 .
  • the shape of the third opening 142 can be set as required, and is not specifically limited here.
  • the balance valve assembly 400 can be fixedly connected with the valve body 100 in the third opening 142 .
  • the balance valve assembly 400 may include a valve seat and a valve plate, and the valve seat and the valve body 100 may be fixedly connected by welding, snap-fit connection or other methods.
  • the balance valve assembly 400 may include a valve plate, and the valve plate may be directly bonded or snap-fitted on the valve body 100 .
  • the third end surface 141 of the valve body 100 is provided with a third opening 142, and a balance valve assembly 400 is provided in the third opening 142, which can pass through the balance valve assembly 400 when the internal pressure difference of the explosion-proof valve is small. Balance the pressure inside and outside the explosion-proof valve to improve the safety of the explosion-proof valve.
  • the balance valve assembly 400 includes a valve plate 410 , and the third opening 142 is provided with a protective frame 420 fixedly connected with the valve body 100 , and the valve plate 410 is disposed far from the protective frame 420 .
  • the valve plate 410 includes a valve plate main body 411 and a movable part 412 that are movably connected.
  • the valve plate main body 411 is fixedly connected to the protective frame 420, and part of the movable part 412 is attached to the protective frame 420, so that the movable part 412 is far away from the protective frame 420.
  • the protective frame 420 can be a structure with a certain rigidity.
  • the protective frame 420 can be in the shape of a square or a square, and the specific shape can be set as required to ensure that the accommodating cavity can pass through the first It is sufficient that the three openings 142 communicate with the external environment.
  • connection method between the protective frame 420 and the valve body 100 it may be an integral connection or welding and the like.
  • the balance valve assembly 400 includes a valve plate 410, which may be a silicone valve plate 410 or a rubber valve plate 410, etc., which is not specifically limited here.
  • the valve plate 410 may include a valve plate main body 411 and a movable part 412 that are movably connected, wherein the valve plate main body 411 may be fixedly connected to the protective frame 420 , such as by bonding or hot pressing. on the protective frame 420.
  • the movable part 412 is movably connected with the valve main body 411 , which mainly means that the movable part 412 can move relative to the valve main body 411 .
  • the valve sheet 410 may be of a certain elastic or flexible structure. By cutting the valve sheet 410, the valve sheet 410 is divided into a valve sheet main body 411 and a movable part 412. One end of the movable part 412 remains connected to the valve sheet main body 411. The other end can move relative to the main body 411 of the valve plate, so that the size of the hole on the valve plate 410 changes.
  • the valve plate main body 411 is provided with an opening, and the movable part 412 can be bonded to one side of the opening, and the movable part 412 moves relative to the valve plate main body 411 to block or avoid the opening.
  • the valve plate 410 is disposed on a side of the protective frame 420 away from the accommodating chamber 110 , that is, the valve plate 410 may be disposed outside the protective frame 420 .
  • Part of the movable part 412 is attached to the protective frame 420.
  • the internal and external pressure difference can act on the movable part 412, and push the movable part 412 away from the protective frame 420 movement in the direction of .
  • the movable part 412 of the valve plate 410 can move unidirectionally relative to the valve plate main body 411 in a direction away from the protective frame 420 , and the balance valve assembly 400 can be roughly regarded as a one-way valve.
  • the balance valve assembly 400 is not an absolute one-way valve.
  • other normally open openings 413 can be provided on the valve plate main body 411; perhaps, the area of the movable part 412 will be smaller than the cross-sectional area of the opening on the valve plate main body 411, so that the movable part 412 and the valve plate main body 411 There are normally open gaps between the pore walls.
  • the movable part 412 when the internal pressure of the explosion-proof valve is greater than the external pressure, the movable part 412 can move outward, so that the opening area on the valve body increases and the exhaust rate increases. And when the internal pressure of the explosion-proof valve is lower than the external pressure, since the inward movement of the movable part 412 is hindered, the opening area on the valve body remains unchanged, so as to avoid excessive air intake rate, so that the hygroscopic member 200 can accommodate the entry
  • the moisture in the air in the cavity 110 is fully absorbed to prevent the moisture from reaching the inside of the equipment such as the battery pack, and effectively protect the electronic components inside the equipment such as the battery pack.
  • the balance valve assembly 400 further includes a limit frame 430 , and the limit frame 430 presses the valve plate main body 411 onto the protective frame 420 ;
  • the limiting frame 430 has a space for the movable part 412 to move in one direction.
  • the limiting frame 430 may be a structure with a certain strength, and the above-mentioned valve plate main body 411 may be arranged between the limiting frame 430 and the protective frame 420 .
  • the limiting frame 430 and the protective frame 420 can form a fixed position for the valve plate main body 411 .
  • the limiting frame 430 can be circular, rectangular or other shapes. In one example, the shape of the limiting frame 430 can match the cross-sectional shape of the third opening 142 , so that the limiting frame 430 can be embedded in the third opening 142 .
  • the connection between the limiting frame 430 and the valve body 100 may be through transition fit, welding or other means, which is not specifically limited here.
  • the limiting frame 430 may have a certain thickness, therefore, the limiting frame 430 may enclose and form a space for the movable part 412 to move in one direction.
  • the space may be a cubic space; when the limiting frame 430 is circular, the space may be a cylindrical space, etc.
  • the valve plate main body 411 can be reliably pressed on the protective frame 420 , and a corresponding movement space can be provided for the movable part 412 , thereby helping to improve the working reliability of the balance valve assembly 400 .
  • the explosion-proof valve further includes a waterproof breathable membrane 510 and a bead 520;
  • the waterproof breathable membrane 510 and the bead 520 are arranged on the side of the limiting frame 430 away from the valve plate 410 , the bead 520 is fixedly connected with the valve body 100 , and the bead 520 presses the waterproof and breathable membrane 510 on the limit frame 430 .
  • the waterproof and gas-permeable membrane 510 can allow air to penetrate, but has a certain waterproof ability. In this way, when the external air enters the accommodation chamber 110 from the third opening 142, the moisture can be isolated by the waterproof and breathable film 510, reducing the moisture content reaching the accommodation chamber 110, and further helping to increase the service life of the hygroscopic member 200.
  • the bead 520 may be a structure with a certain strength, and its specific shape may be a rectangle, a field shape or other shapes, which are not specifically limited here.
  • the waterproof and gas-permeable membrane 510 can be pressed on the side of the limiting frame 430 away from the valve plate 410 through the pressing bar 520 .
  • the above-mentioned bead 520 can be embedded in the third opening 142 , and the peripheral edges of the waterproof and breathable membrane 510 can be fixed between the bead 520 and the limiting frame 430 .
  • the waterproof and gas-permeable membrane 510 may be further fixed on the limiting frame 430 or the bead 520 by means of bonding, so as to improve the installation reliability of the waterproof and gas-permeable membrane 510 .
  • the valve body 100 includes a main body portion 151 and a boss portion 152, and the boss portion 152 is fixedly connected to the peripheral surface of the main body portion 151;
  • first end surface 121 and the second end surface 131 are two opposite end surfaces of the main body 151 in the height direction, the peripheral surface of the main body 151 is located between the first end surface 121 and the second end surface 131, and the third end surface 141 is convex. An end surface of the platform portion 152 away from the main body portion 151 .
  • the main body 151 of the valve body 100 can be in the shape of a cylinder or a truncated cone as a whole, and the first end surface 121 and the second end surface 131 can be two opposite end surfaces in the height direction of the main body 151.
  • a peripheral surface may exist between the first end surface 121 and the second end surface 131 .
  • the boss portion 152 can be connected to the peripheral surface of the main body portion 151 , and the specific connection method can be integrated connection or welding, etc., which is not specifically limited here.
  • the third end surface 141 is an end surface of the boss portion 152 away from the main body portion 151 , that is, the third opening 142 may be disposed in the boss portion 152 .
  • the third opening 142 can have a larger axial length, thereby facilitating the assembly of components such as the balance valve assembly 400 in the third opening 142 .
  • the first opening 122 and the third opening 142 are located on different end faces of the valve body 100.
  • the structure for balancing internal and external air pressure in normal working conditions and the structure for explosion-proof and pressure relief can be arranged relatively independently, which helps To reduce the difficulty of design and manufacture of explosion-proof valves.
  • the valve body 100 includes a main body portion 151 and a guide portion 153, the accommodating cavity 110 is located in the main body portion 151, and the guiding portion 153 is fixedly connected with the main body portion 151 in the accommodating cavity 110; the valve core assembly 300 It is slidably connected with the guide part 153 .
  • the valve body 100 may include a main body portion 151 and a guide portion 153 , wherein the above-mentioned accommodating cavity 110 may be located in the main body portion 151 .
  • the guide part 153 can be disposed in the receiving cavity 110 , and at the same time, the guide part 153 can be fixedly connected with the main body part 151 .
  • the guide part 153 and the main body part 151 may be integrally connected or fixed by welding or the like.
  • the guide part 153 is slidingly connected with the valve core assembly 300 , and the guide part 153 can provide guidance for the movement of the valve core assembly 300 .
  • the guide portion 153 may be provided with a guide hole or a guide groove, and the valve core assembly 300 may be slidably connected to the guide hole or the guide groove.
  • the valve body 100 includes a guide portion 153, which can be used to guide the movement of the valve core assembly 300, thereby facilitating the movement of the lift valve core assembly 300 between the first position and the second position. reliability.
  • the valve core assembly 300 includes a push rod 310, a cover plate 320 and an elastic member 330, and the push rod 310 is fixedly connected to the cover plate 320;
  • the guide part 153 is provided with a guide hole, and the push rod 310 is slidably connected in the guide hole.
  • the two ends of the elastic member 330 are connected to the guide part 153 and the push rod 310 respectively.
  • the cover plate 320 covers the first opening 122 .
  • Both the push rod 310 and the cover plate 320 can be structures with a certain rigidity, and both can be fixedly connected. In some examples, the push rod 310 and the cover plate 320 may be fixed by means of welding, screw connection or fastener connection.
  • the shape of the guide hole on the guide portion 153 is not specifically limited, for example, it may be circular or rectangular, and may match with the cross-sectional shape of the push rod 310 .
  • the elastic member 330 may be a spring or an elastic sheet, which is not specifically limited here. Taking the elastic member 330 as an example, as shown in Figure 4, the two ends of the spring can be respectively connected to the guide part 153 and the push rod 310, and when the spring is in the released state, a downward force can be generated on the push rod 310 and the end cover , so that the end cover is closed at the first opening 122 . At this moment, it corresponds to that the valve core assembly 300 is located at the first position.
  • valve core assembly 300 moves downward under the action of the elastic force of the elastic member 330 , and the end cap can be re-covered on the first opening 122 .
  • the valve core assembly 300 includes a push rod 310, a cover plate 320, and an elastic member 330.
  • the push rod 310 is slidably connected to the guide hole provided on the guide part 153, so as to limit the movement direction of the valve core assembly 300 to the pushing position.
  • the axis of the rod 310 is upward.
  • the elastic member 330 can set the end cap stabilizing cover on the first opening 122 when the pressure in the accommodation chamber 110 is low, so as to improve the working reliability of the explosion-proof valve.
  • the first opening 122 may be a stepped hole opened on the first end surface 121 , and when the valve core assembly 300 is in the first position, the peripheral edge of the end cap may fit on the stepped surface of the stepped hole.
  • a sealing ring may be further provided between the end cover and the stepped surface, so as to ensure that the end cover can reliably close the first opening 122 when the valve core assembly 300 is in the first position.
  • the valve body further includes a limiting portion 155 , which is fixedly connected to the main body portion 151 in the accommodating cavity 110 , and the limiting portion 155 presses the moisture-absorbing member 200 onto the accommodating cavity 110 . on the inner wall.
  • the limiting portion 155 and the main body portion 151 may be integrally connected or fixed by welding or the like, which is not specifically limited here.
  • the quantity of the limiting part 155 can be one or more.
  • the limiting portion 155 and the surrounding inner wall of the accommodating cavity 110 may be disposed opposite to each other, so that a space for placing the absorbent member 200 is formed between the limiting portion 155 and the inner wall of the accommodating cavity 110 .
  • the hygroscopic member 200 can be put into the accommodating chamber 110 from the second opening 132 of the valve body 100, and one end of the hygroscopic member 200 can be snapped into the limiting portion 155 and the accommodating chamber The space between the inner walls of the accommodating chamber 110 , so that the hygroscopic component 200 is reliably limited in the accommodating cavity 110 .
  • the setting of the limiting portion 155 helps to fix the hygroscopic component 200 and the valve body 100 better, and improves the stability of the overall structure of the explosion-proof valve.
  • the guiding portion 153 and the limiting portion 155 can be used together to press the absorbent member 200 on the inner wall of the accommodating cavity 110 .
  • the absorbent member 200 can be arranged around the push rod 310 so as to ensure the movement space of the push rod 310 in the axial direction and prevent the absorbent member 200 from interfering with the movement of the push rod.
  • the hygroscopic member 200 can be formed by bonding an adhesive resin and a hygroscopic agent, and has a relatively fixed shape as a whole.
  • An axial through hole is opened in the hygroscopic member 200, and the push rod 310 extends into the through hole. , so as to achieve the arrangement effect that the absorbent member 200 is surrounded by the push rod 310 .
  • the shape of the through hole in the absorbent member 200 may be cylindrical or conical, etc., which is not specifically limited here.
  • the hygroscopic element 200 may also include a porous container and a hygroscopic agent, and moisture may pass through the openings of the porous container and be absorbed by the hygroscopic agent inside the porous container.
  • the porous container can be fixed on the surrounding inner wall of the accommodating chamber 110 , and the moisture absorbent can be filled into the porous container, so that the hygroscopic element 200 is surrounded by the push rod 310 .
  • the explosion-proof valve further includes a tray 600 , and the tray 600 is fixedly connected to the valve body 100 at the second opening 132 .
  • the tray 600 may be a structure with a certain strength, and is fixedly connected with the valve body 100 at the second opening 132 .
  • the connection manner between the tray 600 and the valve body 100 may be welding, snap connection, bonding or fastener connection, etc., which is not specifically limited here.
  • the shape of the tray 600 can be designed as required, and in some examples, the shape of the tray 600 can match the shape of the second opening 132 .
  • an opening may be formed in the tray 600 to avoid completely closing the second opening 132 .
  • the number of openings on the tray 600 may be one or more, and the shape of the openings may be at least one of rectangle, arc, circle and the like, which are not specifically limited here.
  • the tray 600 is provided at the second opening 132 to connect with the valve body 100, so that structures such as the hygroscopic component 200 can be confined in the accommodating cavity 110, and the stability of the overall structure of the explosion-proof valve can be improved.
  • a skirt 160 is provided on a side of the main body 151 of the valve body 100 close to the second opening 132 , and the skirt 160 is arranged around the main body 151 .
  • the skirt 160 can be in contact with the battery pack and fixedly connected to the battery pack by fasteners or welding.
  • a sealing ring is disposed on the side of the skirt 160 close to the second opening 132 , and when the explosion-proof valve is assembled with the battery pack, the sealing ring can effectively ensure the tightness of the two after assembly.

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Abstract

一种防爆阀包括阀体（100）、吸湿件（200）、阀芯组件（300）。阀体（100）中具有容纳腔（110），阀体（100）的第一端面（121）设置有第一开口（122），阀体（100）的第二端面（131）设置有第二开口（132），第一开口（122）、容纳腔（110）以及第二开口（132）依次连通；吸湿件（200）设置于容纳腔（110）中；阀芯组件（300）与阀体（100）连接，阀芯组件（300）相对于阀体（100）在第一位置与第二位置之间滑动，在第一位置时，阀芯组件（300）盖设于第一开口（122），在第二位置时，阀芯组件（300）移离第一开口（122）。该防爆阀可以避免水分对电池包设备内部造成损坏，且便于更换吸湿件。

Description

防爆阀
相关申请的交叉引用
本申请要求享有于2021年12月01日提交的名称为“防爆阀”的中国专利申请202123003978.8的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请属于阀门领域，尤其涉及一种防爆阀。
背景技术
众所周知，防爆阀作为一种卸压装置，广泛应用在各个行业领域中。举例来说，在电池包中设置防爆阀，可以有效避免因电池包内压力急剧增大导致的爆炸事故。然而，相关技术中，防爆阀的设置，容易导致外部水分进入电池包中，导致电池包中的电子元器件发生损坏。
发明内容
本申请实施例提供一种防爆阀，以解决外部水分沿防爆阀进入到电池包等设备中，导致电子元器件损坏的问题。
第一方面，本申请实施例提供一种防爆阀，包括：
阀体，阀体中具有容纳腔，阀体的第一端面设置有第一开口，阀体的第二端面设置有第二开口，第一开口、容纳腔以及第二开口依次连通；
吸湿件，吸湿件设置于容纳腔中；
阀芯组件，阀芯组件与阀体连接，阀芯组件相对于阀体在第一位置与第二位置之间滑动，在第一位置时，阀芯组件盖设于第一开口，在第二位置时，阀芯组件移离第一开口。
本申请实施例提供的防爆阀，包括阀体、吸湿件以及阀芯组件，阀体 中具有容纳腔，阀体的第一端面设置有第一开口，阀体的第二端面设置有第二开口，第一开口、容纳腔以及第二开口依次连通，吸湿件设置在容纳腔中，阀芯组件与阀体连接，阀芯组件相对于阀体在第一位置与第二位置之间滑动，在第一位置时，阀芯组件盖设于第一开口，在第二位置时，阀芯组件移离第一开口。本实施例中，阀体与阀芯组件滑动连接可以实现在防爆卸压的过程，在阀芯组件移离第一开口时，吸湿件可以吸收进入到容纳腔中的水分，避免水分对例如电池包等设备内部的元件造成损坏，与此同时，在吸湿件需要更换时，无需对电池包等设备进行拆卸，进而有助于提高吸湿件的更换效率。
可选地，防爆阀还包括平衡阀组件，阀体的第三端面上设置有第三开口，第三开口与容纳腔连通，平衡阀组件在第三开口中与阀体固定连接。
阀体的第三端面设置有第三开口，在第三开口中设置平衡阀组件，可以在防爆阀内部压差较小的情况下，通过平衡阀组件平衡防爆阀内外压力，提高防爆阀工作的安全性。
可选地，平衡阀组件包括阀片，第三开口中设置有与阀体固定连接的防护框架，阀片设置于防护框架的远离容纳腔的一侧；
阀片包括活动连接的阀片主体与活动部，阀片主体与防护框架固定连接，部分活动部贴设于防护框架上，活动部在远离防护框架的方向上，相对于阀片主体单向运动。
本实施例可以使得吸湿件能够对进入容纳腔的空气中的水分进行充分吸收，避免水分到达例如电池包等设备内部，有效保护电池包等设备内部的电子元器件。
可选地，平衡阀组件还包括限位框架，限位框架将阀片主体压设在防护框架上；
限位框架中具有供活动部单向运动的空间。
通过设置限位框架，可以将阀片主体可靠地压设在防护框架上，并可以为活动部提供相应的运动空间，进而有助于提高平衡阀组件的工作可靠性。
可选地，防爆阀还包括防水透气膜与压条；
防水透气膜与压条设置在限位框架的远离阀片的一侧，压条与阀体固定连接，且压条将防水透气膜压设在限位框架上。
本实施例可以减少到达容纳腔中的水分含量，进而也有助于提高吸湿件的使用寿命。
可选地，阀体包括主体部与凸台部，凸台部固定连接于主体部的周面上；
其中，第一端面与第二端面为主体部在高度方向上的相对两个端面，主体部的周面位于第一端面与第二端面之间，第三端面为凸台部的远离主体部的端面。
通过凸台部的设置，可以使得第三开口处具有较大的轴向长度，进而方便平衡阀组件等部件在第三开口中的装配。
可选地，阀体包括主体部与导向部，容纳腔位于主体部中，导向部在容纳腔中与主体部固定连接；阀芯组件与导向部滑动连接。
本实施例中，阀体包括导向部，该导向部可以用于为阀芯组件的运动提供导向，从而有助于提升阀芯组件在第一位置与第二位置之间运动的可靠性。
可选地，阀芯组件包括推杆、盖板以及弹性件，推杆与盖板固定连接；
导向部上开设有导向孔，推杆滑动连接于导向孔中，弹性件的两端分别连接于导向部与推杆，在弹性件处于释放状态时，阀芯组件位于第一位置，盖板盖设于第一开口。
本实施例可以提高防爆阀的工作可靠性。
可选地，阀体还包括限位部，限位部在容纳腔中与主体部固定连接，限位部将吸湿件压设在容纳腔的内壁上。
本实施例中通过设置限位部，有助于吸湿件与阀体之间更好地固定，提高防爆阀的整体结构的稳定性。
可选地，防爆阀还包括托盘，托盘在第二开口处与阀体固定连接。
在第二开口处设置托盘与阀体连接，可以将吸湿件等结构限制在容纳腔中，提高防爆阀的整体结构的稳定性。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单的介绍，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是相关技术中防爆阀的结构示意图；
图2是本申请实施例提供的防爆阀的立体结构示意图；
图3是本申请实施例提供的防爆阀的俯视图；
图4是沿图3中A-A向的剖视图；
图5是平衡阀组件处的局部详图；
图6是平衡阀组件中的阀片的结构示意图。
图1中示出：10-阀体、20-阀芯组件、21-第一开孔、30-弹簧、40-密封垫圈。
图2至图6中示出：100-阀体、110-容纳腔、121-第一端面、122-第一开口、131-第二端面、132-第二开口、141-第三端面、142-第三开口、151-主体部、152-凸台部、153-导向部、154-裙边、155-限位部、200-吸湿件、300-阀芯组件、310-推杆、320-盖板、330-弹性件、400-平衡阀组件、410-阀片、411-阀片主体、412-活动部、413-常开开孔、420-防护框架、430-限位框架、510-防水透气膜、520-压条、600-托盘。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别 不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
目前，防爆阀比较广泛地应用在各个行业中，例如电池包、管道或者 仪表等。为简化描述，以下将主要以防爆阀应用在电池包中为例进行说明。
图1是相关技术中一种防爆阀的结构示意图，该防爆阀包括阀体10、阀芯组件20、弹簧30以及密封垫圈40等。
其中，阀体10上设置有开孔(图中未示出)，在常规工作状态下，比如电池包内部压力较低时，阀芯组件20在弹簧30的作用下盖设在阀体10的开孔上。而当电池包内部压力高于一压力阈值时，内外压差作用在阀芯组件20上，可以克服弹簧30的弹力，使得阀芯组件20移离阀体10的开孔，并通过该开孔释放电池包中的压力。
如图1所示，在阀芯组件20中也存在一开孔，为便于与阀体10上的开孔区分，阀芯组件20中的开孔可以称为第一开孔21，阀体10上的开孔可以称为第二开孔。第一开孔21可以用于平衡电池包内外压差。
通常情况下，当电池包内的压力高于一压力阈值时，才会使得阀芯组件20移离第二开孔，并通过第二开孔卸压。而在电池包内外压差较小时，则通过第一开孔21来平衡内外压差。
可见，在防爆阀工作的过程中，电池包内部可能通过第一开孔21或第二开孔与外部环境连通，如此，可能导致外部环境中的水分进入到电池包内部。
比如，在通过第一开孔21平衡电池包内外压力时，电池包内部会与外部空气交换，环境中的空气都包含一定比例的水分，当电池包内温度下降与外界存在温差时，会产生冷凝水。
进入电池包内部的水分会对电池包内部的电子元器件的工作造成不利影响，甚至导致电子元器件损坏。
相关技术中，通常会在电池包内部设置吸湿剂，以避免外部水分对电子元器件造成损坏。然而，但由于吸湿剂的吸湿量是有上限的，当吸湿剂吸满后，就需要更换吸湿剂。但因为吸湿剂放置于电池包内部，更换时需要拆解电池包，进而导致吸湿剂更换效率低。
为解决相关技术中存在的问题，本申请实施例提供了一种防爆阀，如图2至图4所示，该防爆阀包括：
阀体100，阀体100中具有容纳腔110，阀体100的第一端面121设置 有第一开口122，阀体100的第二端面131设置有第二开口132，第一开口122、容纳腔110以及第二开口132依次连通；
吸湿件200，吸湿件200设置于容纳腔110中；
阀芯组件300，阀芯组件300与阀体100连接，阀芯组件300相对于阀体100在第一位置与第二位置之间滑动，在第一位置时，阀芯组件300盖设于第一开口122，在第二位置时，阀芯组件300移离第一开口122。
该防爆阀可以应用在电池包、管道或者仪表等设备中，此处不做具体限定，为简化描述，以下将主要就防爆阀应用在电池包中为例进行说明。
防爆阀的阀体100可以是具有一定强度和刚度的构造，以便对阀芯组件300等结构进行支撑，并且一定的抗外力破坏能力。
阀体100可以具有容纳腔110、第一端面121与第二端面131，第一端面121上设置有第一开口122、第二端面131上设置有第二开口132，第一开口122、容纳腔110以及第二开口132依次连通。
结合一些举例，当防爆阀应用在电池包中时，第二端面131可以是用于与电池包进行装配的端面，该端面的形状可以与电池包的形状匹配，以便防爆阀与电池包能够可靠装配。在两者装配的情况下，电池包内部可以通过第二开口132连通至容纳腔110。
相应地，第一端面121中的第一开口122可以是用于将容纳腔110与电池包的外部环境进行连通的。在一些举例中，第一端面121可以是第二端面131的相对面，也可以是第二端面131的相邻面，此处不做具体限定。
至于第一开口122与第二开口132的形状，可以是矩形、圆形或者其他形状，可根据实际需要进行设计。
结合上文中对防爆阀卸压原理的描述，在本实施例中，第二开口132、容纳腔110以及第一开口122可以构成对电池包内部进行卸压的通道。
本实施例中，阀体100的容纳腔110中可以设置有吸湿件200，该吸湿件200可以包括有机吸湿剂或者无机吸湿剂等，此处不做限定。
在一些举例中，吸湿件200可以包括吸湿剂与多孔容器，吸湿剂可以是填充在多孔容器中，并随多孔容器固定在阀体100上，或者放置在容纳腔110中。
在另一些举例中，吸湿件200也可以包括吸湿剂与粘结剂树脂，吸湿剂与粘结剂树脂粘结，形成具有比较固定的形状的吸湿件200，并装配至容纳腔110中。
阀芯组件300与阀体100滑动连接，阀芯组件300相对于阀体100在第一位置与第二位置之间滑动。
当阀芯组件300位于第一位置时，阀芯组件300可以盖设在第一开口122上。阀芯组件300可以是具有一定强度和刚度的结构，在盖设在第一开口122上时，可以形成对第一开口122的封闭，避免电池包内部经第一开口122与外部空间连通。
当阀芯组件300位于第二位置时，该阀芯组件300可以移离第一开口122，从而使得第一开口122暴露，电池包内部可以经第一开口122与外部空间连通。结合一些实际应用场景，当电池包内部的压力较大时，电池包内外压差可以推动阀芯组件300移离第一开口122，从而起到对电池包的卸压作用。
阀芯组件300中可以设置有上述用于平衡电池包内外压力的第一开孔，也可以不设置第一开孔，此处不做具体限定。比如，阀芯组件300上未设置第一开孔时，可以在阀体100的其他位置设置用于平衡电池包内外压力的开孔。
本申请实施例提供的防爆阀，包括阀体100、吸湿件200以及阀芯组件300，阀体100中具有容纳腔110，阀体100的第一端面121设置有第一开口122，阀体100的第二端面131设置有第二开口132，第一开口122、容纳腔110以及第二开口132依次连通，吸湿件200设置在容纳腔110中，阀芯组件300与阀体100连接，阀芯组件300相对于阀体100在第一位置与第二位置之间滑动，在第一位置时，阀芯组件300盖设于第一开口122，在第二位置时，阀芯组件300移离第一开口122。本实施例中，阀体100与阀芯组件300滑动连接可以实现在防爆卸压的过程，在阀芯组件300移离第一开口122时，吸湿件200可以吸收进入到容纳腔110中的水分，避免水分对例如电池包等设备内部的元件造成损坏，与此同时，在吸湿件200需要更换时，无需对电池包等设备进行拆卸，进而有助于提高吸湿件200 的更换效率。
可选地，如图4所示，防爆阀还包括平衡阀组件400，阀体100的第三端面141上设置有第三开口142，平衡阀组件400在第三开口142中与阀体100固定连接。
同样以防爆阀应用于电池包为例，平衡阀组件400可以是用于平衡电池包内外压力的结构。在一些举例中，平衡阀组件400可以是单独的阀片，或者，也可以是包括阀座与阀片的结构等，此处不做具体限定。
一般来说，当电池包内外压差较小时，阀芯组件300可以保持在第一位置，第一开口122保持封闭，此时可以通过平衡阀组件400来平衡电池包内外压力。
在一些可行实施方式中，阀体100的第三端面141与第一端面121可以为同一端面或不同端面。第三端面141上设置有第三开口142，该第三开口142与容纳腔110连通。第三开口142的形状可以根据需要设置，此处不做具体限定。
平衡阀组件400则可以在第三开口142中与阀体100固定连接。比如，平衡阀组件400可以包括阀座与阀片，阀座与阀体100可以通过焊接、卡合连接或者其他方式固定连接。再比如，平衡阀组件400可以包括阀片，该阀片可以是直接粘结或者卡合连接在阀体100上的。
本实施例中，阀体100的第三端面141设置有第三开口142，在第三开口142中设置平衡阀组件400，可以在防爆阀内部压差较小的情况下，通过平衡阀组件400平衡防爆阀内外压力，提高防爆阀工作的安全性。
可选地，如图4和图5所示，平衡阀组件400包括阀片410，第三开口142中设置有与阀体100固定连接的防护框架420，阀片410设置于防护框架420的远离容纳腔110的一侧；
阀片410包括活动连接的阀片主体411与活动部412，阀片主体411与防护框架420固定连接，部分活动部412贴设于防护框架420上，以使活动部412在远离防护框架420的方向上，相对于阀片主体411单向运动。
本实施例中，防护框架420可以是具有一定刚性的结构，在一些举例，该防护框架420可以是田字形状或者井字形状等，具体形状可以根据需要 进行设置，保证容置腔可以通过第三开口142与外部环境连通即可。
至于防护框架420与阀体100的连接方式，可以是一体连接或者焊接等等。
平衡阀组件400包括阀片410，该阀片410可以是硅胶阀片410或者橡胶阀片410等，此处亦不做具体限定。
如图6所示，该阀片410可以包括活动连接的阀片主体411与活动部412，其中，阀片主体411可以与防护框架420固定连接，比如通过粘结或者热压等方式固定连接在防护框架420上。
活动部412与阀片主体411活动连接，主要指活动部412可以相对阀片主体411进行运动。比如，阀片410可以是带有一定弹性或柔性的构造，通过裁剪阀片410，使得阀片410分为阀片主体411与活动部412，活动部412的一端保持与阀片主体411连接，另一端则可以相对阀片主体411发生活动，从而使得阀片410上的开孔大小发生变化。再比如，阀片主体411上设置开孔，而活动部412可以粘结在该开孔的一侧，活动部412相对阀片主体411运动，从而遮挡或避让该开孔。
阀片410设置在防护框架420的远离容纳腔110的一侧，也就是说，阀片410可以设置在防护框架420的外侧。部分活动部412贴设于防护框架420上，当活动部412受到从外到内的力时，比如防爆阀的外部压力大于内部压力时，活动部412朝向容纳腔110的运动被防护框架420所阻挡。
而当防爆阀的内部压力大于外部压力时，由于活动部412存在暴露在第三开口142中的部分，因此，内外压差可以作用到活动部412上，并推动活动部412在远离防护框架420的方向上运动。
综上，阀片410的活动部412可以在远离防护框架420的方向上，相对于阀片主体411单向运动，平衡阀组件400可以大致认为是单向阀。
当然，在实际应用中，为了平衡防爆阀内外压差，第三开口142可以用于进气，也可以用于排气，因此，平衡阀组件400并非是绝对的单向阀。比如，阀片主体411上可以开设有其他的常开开孔413；或者，活动部412的面积要小于阀片主体411上的开孔的横截面积，使得活动部412与阀片主体411的孔壁之间存在常开的缝隙。
结合一些举例，当防爆阀内部压力大于外部压力时，活动部412可以向外运动，使得阀门主体上的开孔面积增大，排气速率加快。而当防爆阀内部压力小于外部压力时，由于活动部412朝内的运动受阻，阀门主体上的开孔面积保持不变，避免进气速率过快，如此，可以使得吸湿件200能够对进入容纳腔110的空气中的水分进行充分吸收，避免水分到达例如电池包等设备内部，有效保护电池包等设备内部的电子元器件。
可选地，如图5所示，平衡阀组件400还包括限位框架430，限位框架430将阀片主体411压设在防护框架420上；
限位框架430中具有供活动部412单向运动的空间。
限位框架430可以是具有一定强度的结构，上述的阀片主体411可以设置在限位框架430与防护框架420之间。限位框架430与防护框架420可以形成了对阀片主体411的位置的固定。
限位框架430可以是圆形、矩形或者其他形状。在一个举例中，限位框架430的形状可以与第三开口142的横截面形状匹配，以使得限位框架430可以嵌设在第三开口142中。限位框架430与阀体100之间可以是通过过渡配合、焊接或者其他方式进行连接的，此处不作具体限定。
限位框架430可以存在一定的厚度，因此，限位框架430可以围合形成有一供活动部412单向运动的空间。比如，当限位框架430为矩形时，该空间可以是立方体形的空间；当限位框架430为圆形时，该空间可以是圆柱形空间等。
通过设置限位框架430，可以将阀片主体411可靠地压设在防护框架420上，并可以为活动部412提供相应的运动空间，进而有助于提高平衡阀组件400的工作可靠性。
可选地，如图2和图5所示，防爆阀还包括防水透气膜510与压条520；
防水透气膜510与压条520设置在限位框架430的远离阀片410的一侧，压条520与阀体100固定连接，且压条520将防水透气膜510压设在限位框架430上。
防水透气膜510可以允许空气穿透，但具有一定的防水能力。如此，当外部空气从第三开口142进入容纳腔110时，可以被防水透气膜510隔 离水分，减少到达容纳腔110中的水分含量，进而也有助于提高吸湿件200的使用寿命。
至于压条520，可以是具有一定强度的结构，具体的形状可以是矩形、田子形或者其他形状，此处不作具体限定。
通过压条520可以将防水透气膜510压设在限位框架430的远离阀片410的一侧。比如，上述的压条520可以嵌设在第三开口142中，防水透气膜510的四周边缘可以固定在压条520与限位框架430之间。
在一些举例中，防水透气膜510还可以进一步通过粘结等方式固定在限位框架430或者压条520上，以提高防水透气膜510的安装可靠性。
可选地，如图3和图4所示，阀体100包括主体部151与凸台部152，凸台部152固定连接于主体部151的周面上；
其中，第一端面121与第二端面131为主体部151在高度方向上的相对两个端面，主体部151的周面位于第一端面121与第二端面131之间，第三端面141为凸台部152的远离主体部151的端面。
如图2和图4所示，阀体100的主体部151可以整体呈圆柱或者圆台等形状，第一端面121与第二端面131可以是主体部151高度方向上相对的两个端面，在第一端面121和第二端面131之间可以存在周面。
而凸台部152可以连接在主体部151的周面上，具体的连接方式可以是一体连接或者焊接等，此处不作具体限定。
第三端面141为凸台部152的远离主体部151的端面，也就是说，第三开口142可以是设置在凸台部152中的。
本实施例中，通过凸台部152的设置，可以使得第三开口142处具有较大的轴向长度，进而方便平衡阀组件400等部件在第三开口142中的装配。
与此同时，第一开口122与第三开口142位于阀体100的不同端面上，相应地，用于常规工况平衡内外气压的结构与用于防爆泄压的结构可以相对独立布置，有助于降低防爆阀的设计与制造难度。
可选地，如图4所示，阀体100包括主体部151与导向部153，容纳腔110位于主体部151中，导向部153在容纳腔110中与主体部151固定连 接；阀芯组件300与导向部153滑动连接。
阀体100可以包括主体部151与导向部153，其中，上述的容纳腔110可以是位于主体部151中。
导向部153可以设置在容纳腔110中，与此同时，导向部153可以与主体部151固定连接。结合一些举例，导向部153与主体部151之间可以是一体连接或者焊接等进行固定的。
导向部153与阀芯组件300滑动连接，导向部153可以为阀芯组件300的运动提供导向。比如，导向部153上可以设置有导向孔或者导向槽，而阀芯组件300可以滑动连接至导向孔或导向槽中。
本实施例中，阀体100包括导向部153，该导向部153可以用于为阀芯组件300的运动提供导向，从而有助于提升阀芯组件300在第一位置与第二位置之间运动的可靠性。
可选地，如图4所示，阀芯组件300包括推杆310、盖板320以及弹性件330，推杆310与盖板320固定连接；
导向部153上开设有导向孔，推杆310滑动连接于导向孔中，弹性件330的两端分别连接于导向部153与推杆310，在弹性件330处于释放状态时，阀芯组件300位于第一位置，盖板320盖设于第一开口122。
推杆310与盖板320均可以是具有一定刚度的结构，两者可以固定连接。在一些举例中，推杆310和盖板320之间可以通过焊接、螺纹连接或者紧固件连接等方式进行固定。
导向部153上的导向孔的形状可以不作具体限制，比如可以是圆形或者矩形等，与推杆310的横截面形状可以相互匹配。
弹性件330可以是弹簧或者弹性片等，此处不作具体限定。以弹性件330为弹簧为例，如图4所示，弹簧的两端可以分别连接导向部153和推杆310，当弹簧处于释放状态下，可以对推杆310与端盖产生一向下的力，以使得端盖盖合在第一开口122处。此时，对应了阀芯组件300位于第一位置。
而当容纳腔110内部压力较大时，内外压差作用在端盖上，对端盖产生向上的推力，内外压差使得推力足以克服弹性件330的弹力时，端盖将 被顶出，第一开口122暴露，从而起到防爆泄压的效果。
而当容纳腔110内部压力泄放到一较低值时，阀芯组件300在弹性件330的回弹力的作用下向下运动，端盖可以重新盖设于第一开口122处。
本实施例中，阀芯组件300包括推杆310、盖板320以及弹性件330，推杆310滑动连接至导向部153上开设的导向孔中，便于将阀芯组件300的运动方向限制在推杆310的轴向上。而弹性件330则可以在容纳腔110压力较小时，将端盖稳定盖设在第一开口122上，提高防爆阀的工作可靠性。
在一个举例中，第一开口122可以是开设在第一端面121的台阶孔，阀芯组件300处于第一位置时，端盖的四周边缘可以是贴合在台阶孔的台阶面上。而在另一个举例中，端盖与台阶面之间还可以进一步设置密封圈，以保证阀芯组件300处于第一位置时，端盖能够可靠封闭第一开口122。
可选地，如图4所示，阀体还包括限位部155，限位部155在容纳腔110中与主体部151固定连接，限位部155将吸湿件200压设在容纳腔110的内壁上。
限位部155与主体部151之间可以是一体连接或者焊接等进行固定的，此处不做具体限定。
限位部155的数量可以是一个或者多个。限位部155与容纳腔110的四周内壁可以相对设置，从而在限位部155与容纳腔110的内壁之间形成用于放置吸湿件200的空间。
如图4所示，结合一个具体应用例，吸湿件200可以从阀体100的第二开口132放入至容纳腔110中，并且吸湿件200的一端可以卡入到限位部155与容纳腔110的内壁之间的空间中，进而使得吸湿件200在容纳腔110中得到可靠限位。
本实施例中通过设置限位部155，有助于吸湿件200与阀体100之间更好地固定，提高防爆阀的整体结构的稳定性。
在一些实施方式中，导向部153与限位部155可以共同用于将吸湿件200压设在容纳腔110的内壁上。
可选地，如图4所示，吸湿件200可以围设在推杆310的四周，从而 保证推杆310在轴向上的运动空间，避免吸湿件200对推杆的运动造成干涉。
结合上文举例，吸湿件200可以是粘结剂树脂与吸湿剂粘结形成，整体具有比较固定的形状，在吸湿件200中开设一轴向的通孔，推杆310伸入到该通孔中，从而达到吸湿件200围设在推杆310的四周的布置效果。在吸湿件200中通孔的形状，可以是呈圆柱形或圆锥形等，此处不做具体限定。
当然，吸湿件200也可以包括多孔容器和吸湿剂，水气可以透过多孔容器上的开孔被多孔容器内部的吸湿剂所吸收。相应地，可以将多孔容器固定在容纳腔110的四周内壁，并将吸湿剂填充至多孔容器中，使得吸湿件200围设在推杆310的四周。
可选地，如图4所示，防爆阀还包括托盘600，托盘600在第二开口132处与阀体100固定连接。
托盘600可以是具有一定强度的结构，在第二开口132处与阀体100固定连接。托盘600与阀体100的连接方式可以是焊接、卡合连接、粘结或者紧固件连接等，此处不做具体限定。
托盘600的形状可以根据需要进行设计，在一些举例中，托盘600的形状可以是与第二开口132的形状匹配的。
由于第二开口132用于与例如电池包等类型设备的内部空间连通，因此，托盘600中可以具有开孔，以避免对第二开口132完全封闭。托盘600上的开孔的数量可以是一个或多个，开孔的形状可以是矩形、弧形以及圆形等形状中的至少一种，此处均不做具体限定。
本实施例中，在第二开口132处设置托盘600与阀体100连接，可以将吸湿件200等结构限制在容纳腔110中，提高防爆阀的整体结构的稳定性。
可选地，如图2和图4所示，阀体100的主体部151的靠近第二开口132的一侧设置有裙边160，该裙边160围绕主体部151设置。当防爆阀与例如电池包的设备进行装配时，裙边160可以与电池包接触，并通过紧固件或者焊接等方式与电池包固定连接。
在一些示例中，裙边160的靠近第二开口132的一侧配置有密封圈，当防爆阀与电池包装配时，该密封圈可以有效保证两者装配后的密封性。
依照本申请如上文的实施例，这些实施例并没有详尽叙述所有的细节，也不限制该申请仅为的具体实施例。显然，根据以上描述，可作很多的修改和变化。本说明书选取并具体描述这些实施例，是为了更好地解释本申请的原理和实际应用，从而使所属技术领域技术人员能很好地利用本申请以及在本申请基础上的修改使用。本申请仅受权利要求书及其全部范围和等效物的限制。

Claims (10)

  1. 一种防爆阀，包括：
    阀体，所述阀体中具有容纳腔，所述阀体的第一端面设置有第一开口，所述阀体的第二端面设置有第二开口，所述第一开口、所述容纳腔以及所述第二开口依次连通；
    吸湿件，所述吸湿件设置于所述容纳腔中；
    阀芯组件，所述阀芯组件与所述阀体连接，所述阀芯组件相对于所述阀体在第一位置与第二位置之间滑动，在所述第一位置时，所述阀芯组件盖设于所述第一开口，在所述第二位置时，所述阀芯组件移离所述第一开口。
  2. 根据权利要求1所述的防爆阀，还包括平衡阀组件，所述阀体的第三端面上设置有第三开口，所述第三开口与所述容纳腔连通，所述平衡阀组件在所述第三开口中与所述阀体固定连接。
  3. 根据权利要求2所述的防爆阀，其中，所述平衡阀组件包括阀片，所述第三开口中设置有与所述阀体固定连接的防护框架，所述阀片设置于所述防护框架的远离所述容纳腔的一侧；
    所述阀片包括活动连接的阀片主体与活动部，所述阀片主体与所述防护框架固定连接，部分所述活动部贴设于所述防护框架上，所述活动部在远离所述防护框架的方向上，相对于所述阀片主体单向运动。
  4. 根据权利要求3所述的防爆阀，其中，所述平衡阀组件还包括限位框架，所述限位框架将所述阀片主体压设在所述防护框架上；
    所述限位框架中具有供所述活动部单向运动的空间。
  5. 根据权利要求4所述的防爆阀，还包括防水透气膜与压条；
    所述防水透气膜与所述压条设置在所述限位框架的远离所述阀片的一侧，所述压条与所述阀体固定连接，且所述压条将所述防水透气膜压设在所述限位框架上。
  6. 根据权利要求2至5任一项所述的防爆阀，其中，所述阀体包括主体部与凸台部，所述凸台部固定连接于所述主体部的周面上；
    所述第一端面与所述第二端面为所述主体部在高度方向上的相对两个端面，所述主体部的周面位于所述第一端面与所述第二端面之间，所述第三端面为所述凸台部的远离所述主体部的端面。
  7. 根据权利要求1所述的防爆阀，其中，所述阀体包括主体部与导向部，所述容纳腔位于所述主体部中，所述导向部在所述容纳腔中与所述主体部固定连接；所述阀芯组件与所述导向部滑动连接。
  8. 根据权利要求7所述的防爆阀，其中，所述阀芯组件包括推杆、盖板以及弹性件，所述推杆与所述盖板固定连接；
    所述导向部上开设有导向孔，所述推杆滑动连接于所述导向孔中，所述弹性件的两端分别连接于所述导向部与所述推杆，在所述弹性件处于释放状态时，所述阀芯组件位于所述第一位置，所述盖板盖设于所述第一开口。
  9. 根据权利要求8所述的防爆阀，其中，所述阀体还包括限位部，所述限位部在所述容纳腔中与所述主体部固定连接，所述限位部将所述吸湿件压设在所述容纳腔的内壁上。
  10. 根据权利要求1所述的防爆阀，还包括托盘，所述托盘在所述第二开口处与所述阀体固定连接。
PCT/CN2022/134480 2021-12-01 2022-11-25 防爆阀 Ceased WO2023098596A1 (zh)

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