Gas storage device, circuit breaker and vehicle

Abstract

The invention relates to a gas storage device, a circuit breaker and a vehicle. The gas storage device comprises a gas storage part and a sealing part, a gas storage cavity is formed in the gas storage part, the gas storage cavity is used for storing arc extinguishing gas, the gas storage part is provided with an opening communicated with the gas storage cavity, and the sealing part is fixedly connected with the gas storage part so that the sealing part can be connected to the gas storage part in a sealed mode to seal the opening. According to the gas storage device, the sealing piece and the gas storage piece are directly and fixedly connected, so that the sealing piece and the gas storage piece are connected together in a sealed mode, the sealing performance between the sealing piece and the gas storage piece is guaranteed, the sealing piece can effectively seal the opening, the gas tightness of the gas storage piece can be improved, and the service life of the gas storage piece is prolonged. The gas storage device does not need to be supplemented with gas regularly, and the guarantee period of the gas storage device can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of arc extinguishing technology, and in particular to a gas storage device, a circuit breaker and a vehicle. Background Art

[0002] Gas arc extinguishing refers to the process of using gas (usually a specific gas such as carbon dioxide, fluorinated gas or air) to extinguish the arc in electrical equipment.

[0003] Before the gas is used for arc extinguishing, it is usually stored in a gas storage device such as a gas cylinder. The gas storage device in the related art needs to be replenished with gas regularly, which is relatively troublesome. Summary of the Invention

[0004] An embodiment of the present application provides a gas storage device, which directly fixes the sealing component and the gas storage component to be connected, so that the sealing component and the gas storage component are sealed together, ensuring the sealing performance between the sealing component and the gas storage component, so that the sealing component can effectively close the opening, which is beneficial to improving the airtightness of the gas storage component. There is no need to regularly replenish the gas storage device, and the warranty period of the gas storage device can be increased, so as to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above objectives, according to a first aspect of the present application, a gas storage device is provided, comprising:

[0006] A gas storage member is formed with a gas storage cavity, the gas storage cavity is used to store arc extinguishing gas, and the gas storage member is provided with an opening communicating with the gas storage cavity;

[0007] A sealing member is fixedly connected to the gas storage member so that the sealing member is sealedly connected to the gas storage member to close the opening.

[0008] Optionally, the gas leakage rate of the gas storage member is less than or equal to 1×10 -8 Pa·m 3 / s.

[0009] Optionally, the sealing component is connected to the gas storage component by welding.

[0010] Optionally, the pressure resistance of the gas storage component is greater than 50 MPa.

[0011] Optionally, the gas storage member is formed with a gas charging port connected to the gas storage cavity, and the gas storage device further includes a sealing body, which is fixedly connected to the gas storage member to close the gas charging port.

[0012] Optionally, the sealing body is connected to the gas storage component by welding.

[0013] According to a second aspect of the present application, a circuit breaker is provided, comprising the gas storage device as described above.

[0014] Optionally, the circuit breaker further includes a driving assembly, a piercing member and a conductive member, the piercing member is connected to the driving assembly, the conductive member is located between the driving assembly and the sealing member, and the driving assembly is used to drive the piercing member to move toward the sealing member to break the conductive member and allow the piercing member to pierce the sealing member.

[0015] Optionally, the driving assembly includes a fixing seat and a driving member, the driving member is connected to the fixing seat, and the fixing seat is connected to the gas storage device.

[0016] Optionally, the drive assembly further includes a piston, the fixed seat forms a piston cavity, the piston is located in the piston cavity, the piston is connected to the drive member, the piercing member is connected to the piston, and the drive member is used to drive the piston to move along the piston cavity.

[0017] Optionally, the conductive member is provided between the fixing seat and the gas storage device, and at least part of the conductive member is located between the piston cavity and the gas storage member.

[0018] Optionally, the piston abuts against the inner wall surface of the fixing seat.

[0019] Optionally, the driving member includes an ignition tube, and the ignition tube, the piston and the piercing member are connected in sequence.

[0020] Optionally, the gas storage member is detachably connected to the fixing seat.

[0021] Optionally, the gas storage component includes a gas cylinder, and the gas cylinder is connected to a fixing seat.

[0022] Optionally, the gas storage component includes an outer shell and an end cover, the end cover is connected to the outer shell, and the end cover is fixedly connected to the outer shell so that the end cover is sealed to the outer shell, and the end cover and the outer shell are arranged to form the gas storage cavity.

[0023] Optionally, at least a portion of the end cover protrudes into the air storage chamber, and a receiving chamber connected to the piston cavity is formed on a side of the end cover away from the air storage chamber, and the receiving chamber can be used to accommodate at least a portion of the drive assembly.

[0024] Optionally, the end cover includes an end cover body and an insulating member, and the insulating member is arranged between the end cover body and the conductive member.

[0025] Optionally, the inner wall surface of the fixing seat and the inner wall surface of the end cover are both provided with a guide structure, the piston is connected to the guide structure, and the guide structure is used to guide the movement of the piston.

[0026] Optionally, the accommodating cavity extends along the radial direction of the end cover.

[0027] Optionally, the opening is formed on a side wall of the end cover, and at least a portion of the conductive member is located in the accommodating cavity.

[0028] Optionally, the opening is formed on the bottom wall of the end cover, and the driving member is used to drive the piston to move axially along the end cover.

[0029] Optionally, the number of the conductive members is at least two, the number of the pistons is at least two, the at least two pistons correspond one-to-one to the at least two conductive members, the at least two pistons include a first piston and a second piston, the at least two conductive members include a first conductive member and a second conductive member, the first conductive member is located on the moving path of the first piston, and the second conductive member is located on the moving path of the second piston.

[0030] Optionally, the number of the puncturing members is at least two, the number of the openings is at least two, the at least two puncturing members include a first puncturing member and a second puncturing member, the at least two openings include a first opening and a second opening, the first puncturing member is connected to the first piston, the second puncturing member is connected to the second piston, the first puncturing member is used to puncture the seal at the first opening, and the second puncturing member is used to puncture the seal at the second opening.

[0031] According to a third aspect of the present application, a vehicle is provided, comprising the circuit breaker as described above.

[0032] In the gas storage device of the embodiment of the present application, arc-extinguishing gas is stored in the gas storage cavity of the gas storage member, and then a sealing member is fixedly connected to the opening of the gas storage member, so that the sealing member and the gas storage member are sealed together, and the sealing member can further close the opening, making the gas storage cavity a sealed cavity. In other words, the present application ensures the sealing performance between the sealing member and the gas storage member by directly and fixedly connecting the sealing member and the gas storage member, so that the sealing member and the gas storage member are sealed together, and the sealing member can effectively close the opening, which is conducive to improving the airtightness of the gas storage member, eliminating the need to regularly replenish the gas storage device, and can extend the warranty period of the gas storage device.

[0033] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0035] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0036] Figure 1 is a schematic structural diagram of a gas storage device provided in an exemplary embodiment of the present disclosure;

[0037] Figure 2 A schematic diagram of the structure of a circuit breaker provided in an exemplary embodiment of the present disclosure Figure 1 ;

[0038] Figure 3 is a schematic structural diagram of a circuit breaker provided in an exemplary embodiment of the present disclosure, wherein a piercing member pierces a sealing member;

[0039] Figure 4 is a schematic diagram of a structural decomposition of a circuit breaker provided in an exemplary embodiment of the present disclosure;

[0040] Figure 5 is a schematic structural diagram of a drive assembly provided in an exemplary embodiment of the present disclosure;

[0041] Figure 6 is a schematic structural diagram of an insulating member provided in an exemplary embodiment of the present disclosure;

[0042] Figure 7 is a partial structural schematic diagram of a drive assembly provided in an exemplary embodiment of the present disclosure;

[0043] Figure 8 is a schematic structural diagram of a conductive member provided in an exemplary embodiment of the present disclosure;

[0044] Figure 9 This is the second structural schematic diagram of a circuit breaker provided in an exemplary embodiment of the present disclosure;

[0045] Figure 10 This is the third structural schematic diagram of the circuit breaker provided in the exemplary embodiment of the present disclosure.

[0046] Description of reference numerals:

[0047] 1. Gas storage component; 2. Sealing component; 3. Sealing body; 4. Driving assembly; 5. Puncture component; 6. Conductive component; 11. Gas storage chamber; 12. Opening; 13. Inflating port; 14. Outer shell; 15. End cover; 41. Fixed seat; 42. Driving component; 43. Piston; 151. Accommodating chamber; 152. End cover body; 153. Insulating component; 411. Piston chamber; 412. Guide structure; 421. Ignition tube. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only 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 those skilled in the art without creative work are within the scope of protection of the present application.

[0049] According to the first aspect of this application, see Figures 1 to 10 , the present application provides a gas storage device.

[0050] See Figure 1 The gas storage device includes a gas storage component 1 and a sealing component 2. The gas storage component 1 is formed with a gas storage cavity 11, which is used to store arc-extinguishing gas. The gas storage component 1 is provided with an opening 12 connected to the gas storage cavity 11. The sealing component 2 is fixedly connected to the gas storage component 1 so that the sealing component 2 is sealed to the gas storage component 1 to close the opening 12.

[0051] It can be understood that the arc extinguishing gas is stored in the gas storage cavity 11 of the gas storage member 1, and then the seal 2 is fixedly connected to the opening 12 of the gas storage member 1, so that the seal 2 and the gas storage member 1 are sealed together, and then the seal 2 can close the opening 12, so that the gas storage cavity 11 is a sealed cavity. In other words, the present application ensures the sealing performance between the seal 2 and the gas storage member 1 by directly fixing the seal 2 and the gas storage member 1 so that the seal 2 and the gas storage member 1 are sealed together, so that the seal 2 can effectively close the opening 12, which is beneficial to improving the airtightness of the gas storage member 1. There is no need to regularly replenish the gas storage device, which can improve the warranty period of the gas storage device.

[0052] It is understandable that in the related art, the sealing member 2 and the gas storage member 1 are mainly connected via a sealing ring, that is, the sealing ring and the gas storage member 1 are indirectly connected, and air leakage is prone to occur between the sealing member 2 and the sealing ring, and between the sealing ring and the gas storage member 1, resulting in poor air tightness, which in turn causes the gas storage device to require regular air replenishment, which is more troublesome. However, the present application directly and fixedly connects the sealing member 2 and the gas storage member 1, reducing the number of intermediate components and simplifying the structure. This is conducive to improving the sealing between the sealing member 2 and the gas storage member 1, making the gas in the gas storage chamber 11 less likely to leak, thereby improving the air tightness of the gas storage device, eliminating the need to frequently replenish the gas storage device, making the use of the gas storage device more convenient, and extending the warranty period of the gas storage device.

[0053] It is understandable that the use of gas as the arc extinguishing medium can solve the problem of poor arc extinguishing ability of arc extinguishing grid groups or parallel fuses (using quartz sand to extinguish arcs) used in related technologies.

[0054] In some examples, the sealing member 2 is connected to the gas storage member 1 by welding, pressing, or any other suitable means.

[0055] In some examples, the sealing member 2 is, for example, a sealing film.

[0056] In some examples, the arc extinguishing gas is CO2 / SF6 / N2, etc.

[0057] In some embodiments, the gas leakage rate of the gas storage member 1 is less than or equal to 1×10 -8 Pa·m 3 / s.

[0058] It is understood that the gas leakage rate is designed to be less than or equal to 1×10 -8 Pa·m 3 / s, effectively reducing the gas leakage, so that the gas storage cavity 11 can maintain a sufficient amount of arc-extinguishing gas for a long time, and there is no need to regularly or frequently inflate the gas storage member 1.

[0059] It should be noted that the gas leakage rate can be measured under standard operating conditions by helium mass spectrometry leak detection.

[0060] In some embodiments, the sealing member 2 is connected to the gas storage member 1 by welding.

[0061] It can be understood that by directly welding the seal 2 and the gas storage component 1 together, the sealing of the connection between the seal 2 and the gas storage component 1 is ensured, thereby ensuring the airtightness of the gas storage device, effectively reducing the amount of gas leakage, so that a sufficient amount of arc-extinguishing gas can be maintained in the gas storage chamber 11 for a long time, and there is no need to inflate the gas storage device regularly or frequently.

[0062] In some embodiments, the pressure resistance of the gas storage element 1 is greater than 50 MPa, so that the gas storage element 1 can store high-pressure arc-extinguishing gas without damage, leakage, etc.

[0063] In some embodiments, see Figure 1 The gas storage component 1 is formed with a gas charging port 13 connected to the gas storage cavity 11 , and the gas storage device further includes a sealing body 3 , which is fixedly connected to the gas storage component 1 to close the gas charging port 13 .

[0064] It is understood that gas can be inflated into the gas storage chamber 11 through the gas filling port 13, so that the arc-extinguishing gas can be stored in the gas storage member 1. The sealing body 3 and the gas storage member 1 are sealed to close the gas filling port 13, which ensures the sealing of the gas filling port 13 and prevents gas leakage from the gas filling port 13, thereby ensuring the airtightness of the gas storage member 1.

[0065] Specifically, the sealing body 3 is connected to the gas storage component 1 by welding.

[0066] It can be understood that by directly welding the sealing body 3 and the gas storage component 1 together, the sealing of the connection between the sealing body 3 and the gas storage component 1 is ensured, thereby ensuring the airtightness of the gas storage device, effectively reducing the amount of gas leakage, so that a sufficient amount of arc-extinguishing gas can be maintained in the gas storage chamber 11 for a long time, and there is no need to inflate the gas storage device regularly or frequently.

[0067] According to the second aspect of this application, see Figure 2 , the present application provides a circuit breaker, comprising the above-mentioned gas storage device.

[0068] It can be understood that the arc extinguishing gas is stored in the gas storage cavity 11 of the gas storage component 1, and then the seal 2 is fixedly connected to the opening 12 of the gas storage component 1, so that the seal 2 and the gas storage component 1 are sealed together, and then the seal 2 can close the opening 12, so that the gas storage cavity 11 is a sealed cavity. In other words, the present application ensures the sealing performance between the seal 2 and the gas storage component 1 by directly fixing the seal 2 and the gas storage component 1 so that the seal 2 and the gas storage component 1 are sealed together, so that the seal 2 can effectively close the opening 12, which is beneficial to improving the airtightness of the gas storage component 1. There is no need to regularly replenish the gas storage device, which can extend the warranty period of the gas storage device, thereby improving the convenience of using the circuit breaker.

[0069] In some examples, the circuit breaker is, for example, a gas-filled pyrotechnic switch.

[0070] In some embodiments, see Figure 2 、 Figure 3 、 Figure 4 and Figure 6The circuit breaker also includes a driving component 4, a piercing member 5 and a conductive member 6. The piercing member 5 is connected to the driving component 4. The conductive member 6 is located between the driving component 4 and the sealing member 2. The driving component 4 is used to drive the piercing member 5 to move toward the sealing member 2 to break the conductive member 6 and allow the piercing member 5 to pierce the sealing member 2.

[0071] It will be appreciated that the drive assembly 4 can drive the piercing member 5 toward the seal 2, allowing the piercing member 5 to pierce the seal 2, allowing the arc-extinguishing gas within the gas storage chamber 11 to be released through the opening 12. Because the conductive member 6 is located between the drive assembly 4 and the seal 2, when the drive assembly 4 drives the piercing member 5 toward the seal 2, the conductive member 6 is impacted by the drive assembly 4 and breaks, thereby disconnecting the circuit. When the conductive member 6 breaks, an arc is generated, and the arc-extinguishing gas within the gas storage chamber 11 can move through the opening 12 to the conductive member 6, thereby extinguishing the arc using the arc-extinguishing gas.

[0072] At the same time, since the driving component 4 can drive the broken part to continue to move after breaking the conductive part 6, the arc at the conductive part 6 will be elongated, and the arc intensity will be weakened, which is conducive to extinguishing the arc.

[0073] For example, when smoke or fire is detected, it means that the circuit needs to be disconnected, and the driving component 4 will drive the piercing member 5 to move toward the sealing member 2, pierce the sealing member 2, and break the conductive member 6.

[0074] In some examples, the conductive member 6 has a weak portion that is more susceptible to breaking than other portions, making it easier for the drive assembly 4 to impact the conductive member 6 and break it. Specifically, the weak portion can be provided on the moving path of the drive assembly 4 or the piercing member 5.

[0075] In some examples, the conductive member 6 is, for example, a bus bar or a terminal block.

[0076] In some embodiments, see Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The driving component 4 includes a fixing seat 41 and a driving member 42. The driving member 42 is connected to the fixing seat 41, and the fixing seat 41 is connected to the gas storage device, so that the driving member 42 drives the piercing member 5 to move toward the gas storage device, and the driving component 4 and the gas storage device are connected as one component, which improves the integration of the circuit breaker and is conducive to the miniaturization design of the circuit breaker.

[0077] In some examples, the driving member 42 can be used to impact the conductive member 6 to break the conductive member 6 .

[0078] In some examples, the driving member 42 is, for example, a cylinder or a motor.

[0079] In some embodiments, see Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The driving assembly 4 also includes a piston 43, the fixed seat 41 forms a piston cavity 411, the piston 43 is located in the piston cavity 411, the piston 43 is connected to the driving member 42, the piercing member 5 is connected to the piston 43, and the driving member 42 is used to drive the piston 43 to move along the piston cavity 411.

[0080] It can be understood that the driving member 42 can drive the piston 43 to move along the piston cavity 411, and the piercing member 5 moves with the piston 43, so that the piercing member 5 can move to the sealing member 2 to pierce it, and the piston 43 can be equipped with a conductive member 6 to cause it to break.

[0081] In some embodiments, the conductive member 6 is disposed between the fixing seat 41 and the gas storage device, and at least a portion of the conductive member 6 is located between the piston cavity 411 and the gas storage member 1 .

[0082] It is understood that the fixing seat 41 and the gas storage device can limit and fix the conductive member 6, thereby improving the installation stability of the conductive member 6. At least part of the conductive member 6 is arranged between the piston cavity 411 and the gas storage member 1, so that the piston 43 can collide with the conductive member 6 during movement, causing the conductive member 6 to break.

[0083] Specifically, the piston 43 abuts against the inner wall surface of the fixing seat 41 .

[0084] It can be understood that after the piston 43 hits the conductive part 6 and breaks it, since the piston 43 will abut against the inner wall surface of the fixing seat 41, the piston 43 can separate the different fractures of the conductive part 6 to avoid the arc chain phenomenon at different fractures and avoid the increased difficulty of arc extinguishing.

[0085] In some embodiments, see Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The driving member 42 includes an ignition tube 421, and the ignition tube 421, the piston 43 and the piercing member 5 are connected in sequence.

[0086] It is understandable that when the ignition tube 421 is ignited, it can push the piston 43 to move, and the piston 43 can drive the piercing member 5 to move, so that the piston 43 can break the conductive member 6 and the piercing member 5 can pierce the sealing member 2.

[0087] It can be understood that when the ignition tube 421 is used as the driving part 42, when the ignition tube 421 pushes the piston 43 to move, the ignition tube 421 will generate a certain amount of heat, which will increase the temperature of the arc-extinguishing gas moved to the conductive part 6, thereby facilitating the arc-extinguishing gas to enter a supercritical state and improve the arc-extinguishing effect.

[0088] It can be understood that gas is generally stored under pressure, that is, the pressure of the arc-extinguishing gas in the gas storage chamber 11 is relatively large, and when the piercing member 5 pierces the sealing member 2, the high-pressure gas in the gas storage chamber 11 will quickly move to the conductive member 6, causing the pressure of the gas at the conductive member 6 to increase, and the ignition tube 421 can increase the temperature of the arc-extinguishing gas, thereby causing the gas at the conductive member 6 to enter a supercritical state, thereby improving the arc-extinguishing effect.

[0089] In some examples, propellant may be added to the energy chamber of ignition tube 421 as needed.

[0090] In some examples, a pressure relief port may be provided on the fixing seat 41 as required.

[0091] In some examples, the piercing member 5 is, for example, a deflation needle.

[0092] Specifically, the compressive strength of the piston cavity 411 is not less than 20 MPa.

[0093] It can be understood that the pressure resistance of the piston cavity 411 is designed to be no less than 20 MPa, which ensures that when the high-pressure gas in the gas storage cavity 11 flows into the piston cavity 411, the piston cavity 411 can accommodate high-pressure arc-extinguishing gas without damage or leakage.

[0094] At the same time, the arc-extinguishing gas in the piston cavity 411 can be kept in a high-pressure state, providing conditions for the arc-extinguishing gas to enter a supercritical state.

[0095] In some embodiments, the gas storage element 1 is detachably connected to the fixing seat 41 .

[0096] It is understandable that in some usage scenarios, the gas storage member 1 may not be used, and the gas storage member 1 is designed to be detachably connected to facilitate switching of usage scenarios of the circuit breaker.

[0097] In some embodiments, the gas storage member 1 includes a gas cylinder connected to the fixing seat 41 .

[0098] It is understandable that the gas storage component 1 is designed in the shape of a bottle. After the gas bottle is sealed with the sealing component 2, the gas bottle and the fixing seat 41 can be directly connected without the need for additional structures such as a cover plate, which is conducive to the simplification of the structure of the gas storage component 1.

[0099] In some embodiments, see Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The gas storage component 1 includes a shell 14 and an end cover 15 , the end cover 15 is connected to the shell 14 , and the end cover 15 is fixedly connected to the shell 14 so that the end cover 15 is sealed to the shell 14 , and the end cover 15 and the shell 14 are surrounded to form a gas storage cavity 11 .

[0100] It can be understood that directly fixing the outer shell 14 and the end cover 15 to each other reduces the middle parts and simplifies the structure, which is conducive to improving the sealing between the outer shell 14 and the end cover 15, making it difficult for the gas in the gas storage chamber 11 to leak, thereby improving the airtightness of the gas storage device. There is no need to frequently replenish the gas storage device, making the use of the gas storage device more convenient and improving the warranty period of the gas storage device.

[0101] Specifically, the end cover 15 is connected to the housing 14 by welding.

[0102] It can be understood that the outer shell 14 and the end cover 15 are directly welded together by welding, which ensures the sealing of the connection between the outer shell 14 and the end cover 15, and further ensures the airtightness of the gas storage device, effectively reduces the amount of gas leakage, so that a sufficient amount of arc-extinguishing gas can be maintained in the gas storage chamber 11 for a long time, and there is no need to inflate the gas storage device regularly or frequently.

[0103] It should be noted that the end cover 15 may also be connected to the housing 14 by any suitable means such as pressing.

[0104] In some embodiments, see Figure 1 、 Figure 2 、 Figure 4 and Figure 5 At least part of the end cover 15 protrudes into the air storage chamber 11, and a receiving chamber 151 connected to the piston chamber 411 is formed on the side of the end cover 15 away from the air storage chamber 11. The receiving chamber 151 can be used to accommodate at least part of the drive assembly 4.

[0105] It can be understood that the end cover 15 is designed to be concave toward the gas storage chamber 11, so that a receiving chamber 151 can be formed on the side of the end cover 15 facing away from the gas storage chamber 11. The receiving chamber 151 can accommodate at least part of the drive assembly 4 to improve the integrity of the circuit breaker, making the structure of the circuit breaker more compact, which is conducive to reducing the volume of the circuit breaker.

[0106] It can be understood that the accommodating chamber 151 is connected to the piston chamber 411 , so that the piston 43 and / or the piercing member 5 can move into the accommodating chamber 151 .

[0107] In some examples, the accommodating cavity 151 and the piston cavity 411 are connected to form an arc extinguishing cavity, and the arc extinguishing cavity has a pressure resistance greater than 20 MPa.

[0108] In some embodiments, see Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The end cover 15 includes an end cover body 152 and an insulating member 153 , and the insulating member 153 is arranged between the end cover body 152 and the conductive member 6 .

[0109] It can be understood that by arranging the insulating member 153 between the end cover body 152 and the conductive member 6 , the insulating member 153 can insulate and separate the end cover body 152 and the conductive member 6 , thereby preventing the end cover body 152 and the conductive member 6 from being electrically connected.

[0110] In some examples, the end cover body 152 is concave toward the air storage cavity 11 , and the shape of the insulating member 153 is adapted to the shape of the end cover body 152 .

[0111] In some examples, the opening 12 is formed in the end cover body 152 , and the insulating member 153 is formed with an exhaust channel. When the piercing member 5 pierces the sealing member 2 , the opening 12 is connected to the exhaust channel, so that the arc-extinguishing gas can move to the conductive member 6 .

[0112] In some embodiments, see Figure 6 and Figure 7 The inner wall surface of the fixing seat 41 and the inner wall surface of the end cover 15 are both provided with a guide structure 412, and the piston 43 is connected to the guide structure 412, and the guide structure 412 is used to guide the movement of the piston 43.

[0113] It can be understood that the guide structure 412 can guide the movement of the piston 43 so that the piston 43 can move smoothly along the piston cavity 411 and the accommodating cavity 151.

[0114] In some examples, the guide structure 412 is, for example, a guide groove or a guide rail.

[0115] In some embodiments, see Figure 9 The accommodating cavity 151 extends along the radial direction of the end cover 15 .

[0116] It can be understood that extending the accommodating cavity 151 along the radial direction of the end cover 15 is conducive to increasing the accommodation capacity of the accommodating cavity 151, so that the accommodating cavity 151 can accommodate more structures, that is, more related structures of the drive assembly 4 can be set in the accommodating cavity 151, which is conducive to improving the structural integrity of the circuit breaker.

[0117] For details, see Figure 9 The opening 12 is formed on the side wall of the end cover 15 , and at least part of the conductive member 6 is located in the accommodating cavity 151 .

[0118] It is understood that the opening 12 is formed in the side wall of the end cap 15, and at least a portion of the conductive member 6 is disposed within the accommodating cavity 151, so that the conductive member 6 is located in the moving path of the piston 43. Driven by the driving member 42, the piston 43 can move along the accommodating cavity 151, that is, along the radial direction of the end cap 15, so that the piston 43 can strike the conductive member 6 to break it, and the piston 43 can drive the piercing member 5 to the opening 12 to pierce the sealing member 2.

[0119] In some embodiments, the opening 12 is formed on the bottom wall of the end cover 15 , and the driving member 42 is used to drive the piston 43 to move axially along the end cover 15 .

[0120] It can be understood that since the opening 12 is formed on the bottom wall of the end cover 15, the driving member 42 drives the piston 43 to move axially along the end cover 15, so that the piston 43 can drive the piercing member 5 to the opening 12, so that the piercing member 5 can pierce the sealing member 2 at the opening 12.

[0121] In some embodiments, see Figure 10 The number of conductive parts 6 is at least two, the number of pistons 43 is at least two, at least two pistons 43 correspond one-to-one to at least two conductive parts 6, at least two pistons 43 include a first piston 43 and a second piston 43, at least two conductive parts 6 include a first conductive part 6 and a second conductive part 6, the first conductive part 6 is located on the moving path of the first piston 43, and the second conductive part 6 is located on the moving path of the second piston 43.

[0122] It is understood that since the first conductive member 6 is located in the movement path of the first piston 43, the first piston 43 can strike the first conductive member 6 to cause it to break when it moves. Similarly, since the second conductive member 6 is located in the movement path of the first piston 43, the first piston 43 can strike the first conductive member 6 to cause it to break when it moves. In other words, different pistons 43 can strike different conductive members 6 to cause them to break, causing at least two conductive members 6 to break, thereby disconnecting at least two circuits. This allows the circuit breaker of this application to meet different usage requirements.

[0123] For example, the circuit breaker of the present application can be applied to a three-phase circuit, and the first piston 43 and the second piston 43 can disconnect two phases of the three-phase circuit, thereby completely disconnecting the three-phase circuit.

[0124] In some examples, the first conductive member 6 and the second conductive member 6 are spaced apart from each other.

[0125] In some embodiments, see Figure 10The number of piercing members 5 is at least two, the number of openings 12 is at least two, the at least two piercing members 5 include a first piercing member 5 and a second piercing member 5, the at least two openings 12 include a first opening 12 and a second opening 12, the first piercing member 5 is connected to the first piston 43, the second piercing member 5 is connected to the second piston 43, the first piercing member 5 is used to pierce the seal 2 at the first opening 12, and the second piercing member 5 is used to pierce the seal 2 at the second opening 12.

[0126] It is understood that the first piston 43 can drive the first piercing member 5 to pierce the seal 2 at the first opening 12, so that the arc-extinguishing gas can move through the first opening 12 to the first conductive member 6 to extinguish the arc at the first conductive member 6. The second piston 43 can drive the second piercing member 5 to pierce the seal 2 at the second opening 12, so that the arc-extinguishing gas can move through the second opening 12 to the second conductive member 6 to extinguish the arc at the second conductive member 6.

[0127] According to a third aspect of the present application, the present application provides a vehicle comprising the above-mentioned circuit breaker.

[0128] It can be understood that the arc extinguishing gas is stored in the gas storage cavity 11 of the gas storage component 1, and then the seal 2 is fixedly connected to the opening 12 of the gas storage component 1, so that the seal 2 and the gas storage component 1 are sealed together, and then the seal 2 can close the opening 12, so that the gas storage cavity 11 is a sealed cavity. In other words, the present application ensures the sealing performance between the seal 2 and the gas storage component 1 by directly fixing the seal 2 and the gas storage component 1 so that the seal 2 and the gas storage component 1 are sealed together, so that the seal 2 can effectively close the opening 12, which is beneficial to improving the airtightness of the gas storage component 1. There is no need to regularly replenish the gas storage device, which can extend the warranty period of the gas storage device, thereby improving the convenience of using the vehicle.

[0129] In some examples, the vehicle may be a fuel vehicle, a plug-in hybrid vehicle, or a new energy vehicle, etc., which is not specifically limited in this application.

[0130] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0131] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0132] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0133] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A gas storage device, characterized in that: include: A gas storage member is formed with a gas storage cavity, the gas storage cavity is used to store arc extinguishing gas, and the gas storage member is provided with an opening communicating with the gas storage cavity; A sealing member is fixedly connected to the gas storage member so that the sealing member is sealed to the gas storage member to close the opening.

2. The gas storage device according to claim 1, characterized in that The gas leakage rate of the gas storage element is less than or equal to 1×10 -8 Pa·m 3 / s.

3. The gas storage device according to claim 1, characterized in that The sealing component is connected to the gas storage component by welding.

4. The gas storage device according to any one of claims 1 to 3, characterized in that: The compressive strength of the gas storage component is greater than 50 MPa.

5. The gas storage device according to any one of claims 1 to 3, characterized in that: The gas storage member is formed with a gas charging port communicating with the gas storage cavity. The gas storage device further includes a sealing body fixedly connected to the gas storage member to close the gas charging port.

6. The gas storage device according to claim 5, characterized in that The sealing body is connected to the gas storage component by welding.

7. A circuit breaker, characterized in that: Comprising the gas storage device according to any one of claims 1 to 6.

8. The circuit breaker according to claim 7, characterized in that The circuit breaker further includes a driving assembly, a piercing member and a conductive member, wherein the piercing member is connected to the driving assembly, and the conductive member is located between the driving assembly and the sealing member. The driving assembly is used to drive the piercing member to move toward the sealing member to break the conductive member and allow the piercing member to pierce the sealing member.

9. The circuit breaker according to claim 8, characterized in that The driving assembly includes a fixing seat and a driving member, wherein the driving member is connected to the fixing seat, and the fixing seat is connected to the gas storage device.

10. The circuit breaker according to claim 9, characterized in that The driving assembly also includes a piston, the fixing seat forms a piston cavity, the piston is located in the piston cavity, the piston is connected to the driving member, the piercing member is connected to the piston, and the driving member is used to drive the piston to move along the piston cavity.

11. The circuit breaker according to claim 10, characterized in that The conductive member is arranged between the fixing seat and the gas storage device, and at least a portion of the conductive member is located between the piston cavity and the gas storage member.

12. The circuit breaker according to claim 10, wherein: The piston abuts against the inner wall surface of the fixing seat.

13. The circuit breaker according to any one of claims 10 to 12, characterized in that: The driving member includes an ignition tube, and the ignition tube, the piston and the piercing member are connected in sequence.

14. The circuit breaker according to any one of claims 9 to 12, characterized in that: The gas storage component is detachably connected to the fixing seat.

15. The circuit breaker according to any one of claims 9 to 12, characterized in that: The gas storage component includes a gas cylinder, and the gas cylinder is connected to a fixing seat.

16. The circuit breaker according to claim 10, wherein: The gas storage component includes a shell and an end cover, wherein the end cover is connected to the shell and fixedly connected to the shell so that the end cover is sealed to the shell, and the end cover and the shell are surrounded to form the gas storage cavity.

17. The circuit breaker according to claim 16, wherein: At least part of the end cover protrudes into the air storage cavity, and a receiving cavity communicated with the piston cavity is formed on the side of the end cover away from the air storage cavity, and the receiving cavity can be used to accommodate at least part of the drive assembly.

18. The circuit breaker according to claim 16, wherein: The end cover includes an end cover body and an insulating member, and the insulating member is arranged between the end cover body and the conductive member.

19. The circuit breaker according to claim 16, wherein: The inner wall surface of the fixing seat and the inner wall surface of the end cover are both provided with a guide structure, the piston is connected to the guide structure, and the guide structure is used to guide the movement of the piston.

20. The circuit breaker according to claim 17, wherein: The accommodating cavity extends along the radial direction of the end cover.

21. The circuit breaker according to claim 20, characterized in that The opening is formed on the side wall of the end cover, and at least a portion of the conductive member is located in the accommodating cavity.

22. The circuit breaker according to claim 16, wherein: The opening is formed on the bottom wall of the end cover, and the driving member is used to drive the piston to move along the axial direction of the end cover.

23. The circuit breaker according to any one of claims 10 to 12 or any one of claims 16 to 22, characterized in that: The number of the conductive members is at least two, the number of the pistons is at least two, the at least two pistons correspond one-to-one to the at least two conductive members, the at least two pistons include a first piston and a second piston, the at least two conductive members include a first conductive member and a second conductive member, the first conductive member is located on the moving path of the first piston, and the second conductive member is located on the moving path of the second piston.

24. The circuit breaker according to claim 23, wherein: The number of the piercing members is at least two, the number of the openings is at least two, the at least two piercing members include a first piercing member and a second piercing member, the at least two openings include a first opening and a second opening, the first piercing member is connected to the first piston, the second piercing member is connected to the second piston, the first piercing member is used to pierce the seal at the first opening, and the second piercing member is used to pierce the seal at the second opening.

25. A vehicle, characterized in that: Comprising a circuit breaker according to any one of claims 7 to 24.

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