Switching device and vehicle

Abstract

A switching device and a vehicle, the switching device comprising: a contact assembly for turning on a switching electrical loop in a first state and turning off the switching electrical loop in a second state; the tripping device is used for directly contacting with the contact assembly and driving the contact assembly to switch from the first state to the second state so as to cut off a switch electric loop; the contact assembly comprises a static contact assembly and a moving contact assembly, the first state is that the moving contact assembly is in contact with the static contact assembly, and the second state is that the moving contact assembly is separated from the static contact assembly; the tripping device can be in direct contact with the moving contact assembly and drive the moving contact assembly to move, so that the moving contact assembly is separated from the static contact assembly to disconnect a switch electric loop. The switch device is simple in structure and few in related parts, and the tripping device can directly apply impulsive force to the contact assembly to drive the contact of the switch to be disconnected, so that a conductive loop of the switch is disconnected.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a switch device and a vehicle. Background Art

[0002] In existing technology, when the primary protection fails, intelligent protection switches typically require backup protection to prevent abnormally high current from overcurrenting components and loads in the conductive circuit, potentially damaging them. Existing switch backup protection structures are complex, typically requiring a trip mechanism to first unlock the drive mechanism, which then drives the switch contacts to open, thereby disconnecting the switch's conductive circuit. This design is complex, involves numerous intermediate links, requires numerous components, and is costly. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art.

[0004] To this end, one object of the present invention is to provide a switch device, comprising:

[0005] a contact assembly configured to connect a switch circuit in a first state and disconnect the switch circuit in a second state; a trip device configured to directly contact and drive the contact assembly to switch from the first state to the second state to disconnect the switch circuit;

[0006] The contact assembly includes a static contact assembly and a moving contact assembly. In a first state, the moving contact assembly is in contact with the static contact assembly, and in a second state, the moving contact assembly is separated from the static contact assembly.

[0007] The tripping device can directly contact and drive the moving contact assembly to move, so that the moving contact assembly is separated from the static contact assembly to disconnect the switch electrical circuit.

[0008] The tripping device of the switch device can directly contact and drive the contact assembly, so that the contact assembly switches from the first state to the second state, thereby disconnecting the switch conductive circuit. The intermediate driving device is no longer required, the intermediate links are reduced, and the reliability of the tripping device is improved.

[0009] In some embodiments, the contact assembly includes a first connection terminal and a second connection terminal, and the contact assembly is connected in series to the switch electrical circuit through the first connection terminal and the second connection terminal.

[0010] In some embodiments, the static contact assembly includes a first static contact and a second static contact spaced apart from each other, the first static contact and the second static contact being connected to the first connection terminal and the second connection terminal, respectively;

[0011] When the moving contact assembly contacts the static contact assembly, the first static contact and the second static contact are connected via the moving contact assembly, so that the first connecting terminal and the second connecting terminal are connected to conduct the switch circuit;

[0012] When the trip device directly contacts and drives the moving contact assembly to separate from the static contact assembly, the first static contact and the second static contact are disconnected from the moving contact assembly, and the circuit between the first connecting terminal and the second connecting terminal is broken to disconnect the switch electrical circuit.

[0013] In some embodiments, the moving contact assembly and the static contact assembly are connected to a first connection terminal and a second connection terminal, respectively;

[0014] When the moving contact assembly is in contact with the static contact assembly, the first connecting terminal and the second connecting terminal are connected through the moving contact assembly and the static contact assembly to conduct the switch electrical circuit; when the trip device directly contacts and drives the moving contact assembly to separate from the static contact assembly, the first connecting terminal and the second connecting terminal are disconnected to disconnect the switch electrical circuit.

[0015] In some embodiments, the moving contact assembly includes a first moving contact and a second moving contact arranged at intervals, and the first moving contact and the second moving contact are respectively connected to a first connecting terminal and a second connecting terminal; when the moving contact assembly contacts the static contact assembly, the first moving contact and the second moving contact are connected through the static contact assembly, so that the first connecting terminal and the second connecting terminal are conductive, thereby conducting the switch electrical circuit; when the tripping device directly contacts and drives the moving contact assembly to separate from the static contact assembly, the first moving contact and the second moving contact are both disconnected from the moving contact assembly, and the circuit between the first connecting terminal and the second connecting terminal is broken, thereby disconnecting the switch electrical circuit.

[0016] In some embodiments, the switch device further includes a second electromagnetic driver connected to the moving contact assembly and configured to drive the moving contact assembly into contact with the static contact assembly, thereby conducting the switch electrical circuit.

[0017] In some embodiments, the trip device includes:

[0018] A first push rod, which is used to apply an impulse to the contact assembly when it is in action; a first electromagnetic drive component, which is fixedly connected to the first end of the first push rod; a conductive wire, which surrounds the first electromagnetic drive component and is suitable for conductive connection with the switch circuit. When the magnetic field generated by the current flowing through the conductive wire exerts a force on the first electromagnetic drive component that is greater than the pre-tightening force on the first electromagnetic drive component, the first electromagnetic drive component drives the first push rod to directly contact the moving contact assembly and push the moving contact assembly to move, so that the moving contact assembly is separated from the static contact assembly to disconnect the switch circuit.

[0019] In some embodiments, the first electromagnetic drive component includes a moving iron core and a stationary iron core that are relatively arranged, and the moving iron core and the stationary iron core can switch between a separated state and an abutted state. When the moving iron core and the stationary iron core are in the separated state, the moving contact assembly is in contact with the stationary contact assembly; the moving iron core is configured to move toward the stationary iron core and drive the first push rod to directly contact the moving contact assembly and push the moving contact assembly to move when the force applied to the magnetic field is greater than the pre-tightening force applied to the moving iron core, until the moving iron core and the stationary iron core are in an abutted state and the moving contact assembly is separated from the stationary contact assembly; the moving iron core is also configured to keep the moving iron core and the stationary iron core in a separated state when the force applied to the magnetic field is less than or equal to the pre-tightening force applied to the moving iron core.

[0020] In some embodiments, the first electromagnetic driving component further includes a first spring, through which the moving iron core and the static iron core are connected. The first spring is used to provide a pre-tightening force to the moving iron core, so that the moving iron core and the static iron core are in a separated state.

[0021] In some embodiments, an arc extinguishing assembly is included, which includes a first arc extinguishing member and a second arc extinguishing member arranged at intervals, and the moving contact is located between the first arc extinguishing member and the second arc extinguishing member; the first arc extinguishing member is used to extinguish the arc generated by the first moving contact and the first static contact, and the second arc extinguishing member is used to extinguish the arc generated by the second moving contact and the second static contact.

[0022] The present solution also provides a vehicle comprising the above-mentioned switch device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0024] Figure 1 A schematic diagram of the structure of a switch device provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of a switch device in a closed state provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the disconnected state of a switch device provided in an embodiment of the present application.

[0027] Figure 4 A schematic diagram of a tripping device provided in an embodiment of the present application;

[0028] Figure 5 Schematic diagram of the separation state of the moving iron core and the static iron core of the trip device provided in an embodiment of the present application;

[0029] Figure 6 Schematic diagram of the engaged state of the moving iron core and the static iron core of the trip device provided in an embodiment of the present application;

[0030] Description of reference numerals:

[0031] 1. Trip device; 11. First push rod; 12. Striking head; 13. First electromagnetic drive member; 14. Moving iron core; 15. Stationary iron core;

[0032] 16. First spring; 17. Wire; 18. Mounting frame; 19. Insulation cavity

[0033] 2. Moving contact assembly; 3. Stationary contact assembly; 33. First stationary contact; 34. Second stationary contact

[0034] 4. Contact assembly; 41. Moving contact; 42. Second spring; 43. Support member; 44. Limit member

[0035] 5. Arc extinguishing assembly; 6. Second electromagnetic drive component; 61. Second moving iron core; 62. Second push rod; DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0037] like Figures 1-6 The present application discloses a switch device, which includes:

[0038] The contact assembly 4 is used to connect the switch circuit in a first state and disconnect the switch circuit in a second state. The contact assembly 4 is used to connect or disconnect the switch circuit. The trip device 1 is used to directly contact and drive the contact assembly 4 from the first state to the second state to disconnect the switch circuit. The trip device of the embodiment of the present application can directly contact and drive the contact assembly, eliminating the intermediate retaining mechanism, thereby simplifying the structure, shortening the reaction time, and improving the reliability of the device.

[0039] In some optional embodiments, the contact assembly 4 includes a static contact assembly 3 and a moving contact assembly 2, the first state is that the moving contact assembly 2 is in contact with the static contact assembly 3, and the second state is that the moving contact assembly 2 is separated from the static contact assembly 3; wherein, the tripping device 1 can directly contact and drive the moving contact assembly 2 to move, so that the moving contact assembly 2 is separated from the static contact assembly 3 to disconnect the switch electrical circuit.

[0040] The trip device 1 of the embodiment of the present application can directly connect to the moving contact assembly 2 and drive the contact assembly 4 to operate, eliminating the intermediate retaining mechanism, thereby simplifying the structural components, shortening the reaction time, and improving the reliability of the device. When the large fault current exceeds the preset current, the trip device 1 can directly strike the contact assembly 4 under the action of the impact force, thereby disconnecting the switch electrical connection. No additional parts are required, and no tripping and unlocking action is required. The switch device is highly integrated and inexpensive. It should be noted that the trip device 1 has an inductor, which is connected in series to the system where the switch assembly is located. When a fault occurs in the circuit where the switch assembly is located and a large current appears, the inductor can limit the rise rate of the short-circuit current, preventing the short-circuit current from increasing too quickly in a short period of time and damaging the switch assembly.

[0041] In some optional embodiments, the contact assembly 4 includes a first connecting terminal and a second connecting terminal; the contact assembly 4 is connected in series to the switch electrical circuit through the first connecting terminal and the second connecting terminal.

[0042] In some optional embodiments, the static contact assembly 4 includes a first static contact 33 and a second static contact 34 arranged at intervals, and the first static contact 33 and the second static contact 34 are respectively connected to the first connection terminal and the second connection terminal; when the moving contact assembly 2 is in contact with the static contact assembly 3, the first static contact and the second static contact are connected through the moving contact assembly 3, so that the first connection terminal and the second connection terminal are conductive, thereby conducting the switch electrical circuit; when the tripping device 1 directly contacts and drives the moving contact assembly 2 to separate from the static contact assembly 3, the first static contact 33 and the second static contact 34 are both disconnected from the moving contact assembly, and the circuit between the first connection terminal and the second connection terminal is broken to disconnect the switch electrical circuit.

[0043] The first state proposed by the present invention is that the moving contact assembly 2 is in contact with the static contact assembly 3, and the second state is that the moving contact assembly 2 is separated from the static contact assembly 3. Specifically, the tripping device 1 can directly contact and drive the moving contact assembly 2 to move, so that the moving contact assembly 2 is separated from the static contact assembly 3 to disconnect the switch circuit; the moving contact assembly 3 is provided with a first moving contact and a second moving contact, the first moving contact is used to abut or separate with the first static contact 33, and the second moving contact is used to abut or separate with the second static contact 34. The first static contact and the second static contact are connected through the moving contact assembly 3, so that the first connecting terminal and the second connecting terminal are conductive, thereby conducting the switch circuit; the tripping device 1 can directly contact and drive the moving contact assembly 2 to move, so that the moving contact assembly 2 is separated from the static contact assembly 3 to disconnect the switch circuit. As described above, the tripping device 1 directly strikes and drives the moving contact assembly 2 to switch from the first state to the second state under the impact of the first electromagnetic drive 13 force to cut off the switch electrical circuit. The tripping device 1 can realize the switching of the first moving contact 41 and the first static contact, and the second moving contact 41 and the second static contact from the closed state to the open state under the action of the driving force. It can be understood that the first state is the closed state of the switch. When the switch is in the first state, the electrical circuit is connected. The second state is the open state of the switch. When the switch is in the second state, the electrical circuit is disconnected. The tripping device 1 can drive the contact assembly 4 to move and disconnect the electrical circuit.

[0044] In some optional embodiments, the moving contact assembly 2 and the static contact assembly 3 are respectively connected to the first connecting terminal and the second connecting terminal; when the moving contact assembly 2 is in contact with the static contact assembly 3, the first connecting terminal and the second connecting terminal are connected through the moving contact assembly 2 and the static contact assembly 3 to conduct the switch electrical circuit; when the tripping device 1 directly contacts and drives the moving contact assembly 2 and the static contact assembly 3 to separate, the circuit between the first connecting terminal and the second connecting terminal is broken to disconnect the switch electrical circuit.

[0045] See also Figure 1-Figure 3 In the present application, the static contact assembly 3 is arranged in an electrical circuit, and the electrical circuit can be electrically connected when energized. The static contact assembly includes a first static contact 33 and a second static contact 34. The first static contact 33 and the second static contact 34 are arranged at intervals. The first static contact is arranged on the copper bus 33, and the second static contact is arranged on the copper bus 34. In the present application, the moving contact assembly 2 can abut against the first static contact 33, or contact with the second static contact 34, or abut against the first static contact 33 and the second static contact 34 at the same time to achieve the conduction of the electrical circuit. The tripping device 1 directly contacts and drives the moving contact assembly 2 to separate from the static contact 33, or separate from the second static contact 34, or separate from the first static contact 33 and the second static contact 34 at the same time to achieve the disconnection of the electrical circuit.

[0046] In the present application, the moving contact assembly 2 and the first static contact 33 form a break when separated, and the moving contact assembly 2 and the second static contact 34 form a break when separated. By forming two breaks, the opening distance is increased, which is conducive to arc extinguishing. The opening distance is the sum of the distance between the moving contact assembly 2 and the first static contact 33 and the distance between the moving contact assembly 2 and the second static contact 34 when the switch assembly is disconnected. Optionally, the trip device 1 can be located between the first static contact 33 and the second static contact 34. When a short circuit occurs and the current flowing through the trip device 1 instantly exceeds a preset current value, it can directly drive the moving contact assembly 2, so that the moving contact assembly 2 moves to the disconnected position and separates from the first static contact 33 and the second static contact 34, and the switch switches from the closed state to the open state to disconnect the electrical circuit.

[0047] In some optional embodiments, the moving contact assembly 2 includes a first moving contact and a second moving contact arranged at intervals, and the first moving contact and the second moving contact are respectively connected to a first connecting terminal and a second connecting terminal; when the moving contact assembly 2 contacts the static contact assembly 3, the first moving contact and the second moving contact are connected through the static contact assembly, so that conduction is made between the first connecting terminal and the second connecting terminal to conduct the switch electrical circuit; when the tripping device 1 directly contacts and drives the moving contact assembly 2 to separate from the static contact assembly 3, the first moving contact and the second moving contact are both disconnected from the moving contact assembly, and the circuit between the first connecting terminal and the second connecting terminal is broken to disconnect the switch electrical circuit.

[0048] See also Figure 1-Figure 3 In some optional embodiments, the first moving contact is arranged opposite to the first static contact 33, and the second moving contact is arranged opposite to the second static contact 34. The first moving contact is used to abut or separate from the first static contact, and the second moving contact is used to abut or separate from the second static contact. When the current in the electrical circuit exceeds the preset current, when the main protection (the switch or vehicle recognizes the current overload, controls the drive system to realize the tripping action, and the switch is disconnected) does not respond, the switch tripping device 1 is started, and when the moving iron 14 in the tripping device is subjected to an electromagnetic force greater than the reaction force of the first spring 16, the moving iron core 14 moves until it moves to be attracted by the static iron core 15. Under the action of the first electromagnetic driving force, the first push rod 11 moves, and the striking head 12 provided at the other end of the first push rod 11 strikes the contact assembly 4, causing the contact assembly 4 to overcome the stable magnetic holding state. The first push rod 11 moves with the moving iron core 14 until the moving contact 41 moves to the off position, and the moving contact 41 is separated from the first static contact 33 and the second static contact 34 in the conductive circuit. The switch is switched from the first state to the second state, that is, the switch is switched from the closed state to the off state, and the conductive circuit is switched from connected to disconnected, thereby avoiding overcurrent of component loads in the electrical circuit, which may cause damage to the device.

[0049] In the present application, the moving contact assembly 2 further includes a second spring 42, a support member 43, and a stopper 44. One side of the support member 43 is provided with a mounting groove, and the other side is provided with spaced mounting structures. The mounting structures may be one or more, and the purpose of providing the mounting structures is to mount the second spring 42. The second spring 42 is located between the moving contact 41 and the support member 43. One end of the second spring 42 is connected to the mounting structure provided on the support member 43, and the other end is connected to the moving contact 41 provided on the moving contact assembly, so that the moving contact 41 and the support member 43 are elastically connected via the second spring 42. It is understood that the selection of the second spring 42 and the first spring 16 in the present application is related to the preset value of the current passing through the main contact circuit. The stopper 44 is provided on the periphery of the moving contact 41, the second spring 42, and the support member 43, and is used to limit the range of movement of the moving contact 41 and the support member 43, so that they can move within the range defined by the stopper 44.

[0050] In some optional embodiments, the switch device further includes a second electromagnetic driver 6, which is connected to the moving contact assembly 2 and is used to drive the moving contact assembly 2 to contact the static contact assembly 3, thereby conducting the switch circuit. In the present application, the second electromagnetic driver 6 includes a second push rod 62 and a moving iron core 61, wherein the second push rod 62 drives the moving iron core 61 to move. The second electromagnetic driver 6 is also connected to the moving contact assembly 2 and is used to drive the first moving contact to abut or separate from the first static contact 33 and the second moving contact to abut or separate from the second static contact 34 in the power-on state, thereby conducting or disconnecting the switch circuit. Specifically, the second electromagnetic driver 6 is connected to a support member 43 provided on the moving contact assembly 2, and the support member 43 drives the moving contact assembly 2 to move under the drive of the second electromagnetic driver 6.

[0051] In the present application, the support member 43 is connected to the second push rod 62 provided with the second electromagnetic drive member 6. Under the electromagnetic driving force, the second push rod 62 drives the support member 43 to move, and further, the support member 43 drives the moving contact 41 to move. In the present application, a mounting accommodating groove is provided on one side of the support member 43, and a mounting limiter is provided on the other end of the second push rod 62. The accommodating groove of the support member 43 is connected to the mounting limiter of the second push rod 62, wherein the mounting limiter at the other end of the second push rod 62 is inserted into the accommodating groove provided on the support member 43. One end of the above second push rod 62 is connected to the moving iron core 61, and the other end is connected to the moving contact assembly 2. The second electromagnetic drive assembly 6 may or may not be provided with a spring. The second electromagnetic drive member assembly 6 is connected to the conductive circuit. When the conductive circuit is short-circuited, the second electromagnetic drive assembly 6 can move, drive the contact head 41 to move to the off position, and separate from the first static contact 33 and the second static contact 34 to protect the switch device. The second electromagnetic drive member 6 is used to drive the switch to switch between closing and opening. The second electromagnetic drive member 6 drives the moving contact assembly 2 to move until the moving contact assembly 2 moves to abut against the static contact assembly 3 and is in the closing position, and the electrical circuit is connected. When an abnormally large current passes through the electrical circuit due to a fault, the second electromagnetic drive assembly 6 is also used to drive the moving contact assembly 2 to separate from the static contact assembly 3 and until it reaches the off position, and the electrical circuit is disconnected. In the embodiment provided by the present application, after the fault of the switch assembly is eliminated, when the switch assembly is switched from the off state to the closed state, the circuit board receives a signal to control the movement of the second electromagnetic drive member 6, wherein the second push rod 62 can drive the moving contact assembly 2 to move during the movement until the moving contact assembly 2 abuts against the static contact assembly 3 and is in the closing position, achieving electrical circuit connection and the switch is closed.

[0052] In some optional embodiments, the trip device 1 includes a first push rod 11, which is used to apply an impulse to the contact assembly 4 when actuated; a first electromagnetic driver 13, which is fixedly connected to the first end of the first push rod 11; and a conductive wire, which surrounds the first electromagnetic driver 13 and is suitable for being electrically connected to the switch circuit. When the magnetic field generated by the current flowing through the conductive wire exerts a force on the first electromagnetic driver 13 that is greater than the preload force on the first electromagnetic driver 13, the first electromagnetic driver 13 drives the first push rod 11 to directly contact the movable contact assembly 2 and push the movable contact assembly 2 to move, thereby separating the movable contact assembly from the static contact assembly 3 to disconnect the switch circuit. The first electromagnetic driver 13 is connected to the first end of the first push rod 11, is suitable for being connected to the conductive wire of the switch circuit, and provides a driving force to drive the first push rod 11 to actuate when the current flowing through the switch circuit is greater than or equal to a preset current. It can be understood that the tripping device 1 can detect and determine the abnormally large current in the electrical circuit and provide electromagnetic driving force to drive the first push rod 11 to move. Compared with the electronic trip device, signal transmission loss may occur, and there is no need to add additional structural parts to provide driving force. The magnetic force generated by the abnormally large current in the electrical circuit can be directly used to provide driving force. The tripping device proposed in this solution has higher reliability and lower cost.

[0053] like Figure 4-Figure 6 As shown, the tripping device 1 also includes a wire 17, a mounting frame 18 and an insulating cavity 19; the mounting frame 18 surrounds the periphery of the first electromagnetic driving member 13, and the mounting frame 18 is suitable for setting the wire 17, and the wire 17 is used to electrically connect the first electromagnetic driving member 13 with the switch circuit, and the mounting frame 18 surrounds the radial periphery of the moving iron core 14 and the static iron core 15; one side of the static iron core 15 is fixed to the insulating cavity 19, and the insulating cavity 19 is used to accommodate at least the static iron core 15, and the static iron core 15 is provided with a first through hole, and the insulating cavity 19 is provided with a second through hole, and the first through hole and the second through hole are connected to each other for the first push rod 11 is inserted through the conductor; under normal current, the moving iron core 14 and the static iron core 15 in the trip device 1 are separated by the spring force of the first spring 16. When an abnormally large current passes through the conductor 17 during a fault, the magnetic field of the conductor is enhanced, and the electromagnetic force on the moving iron core 14 increases sharply. When the electromagnetic force is greater than the spring force of the first spring 16, the moving iron core 14 moves until it is attracted to the static iron core 15. Since the first end of the first push rod 11 is fixedly connected to the moving iron core 14, and the static iron core 15 is provided with a first through hole for the first push rod 11 to pass through, the movement of the moving iron core 14 can drive the movement of the first push rod 11. Furthermore, the striking head 12 provided on the first push rod 11 directly contacts and strikes the contact assembly 4. The huge striking force plus the electric repulsion between the high-current contacts causes the contact assembly 4 to move, which can realize the switch switching from the first state to the second state.

[0054] In some optional embodiments, the first electromagnetic drive member 13 includes a moving iron core 14 and a stationary iron core 15 arranged opposite to each other, and the moving iron core 14 and the stationary iron core 15 can switch between a separated state and an abutted state. When the moving iron core 14 and the stationary iron core 15 are separated, the moving contact assembly 2 is in contact with the stationary contact assembly 3; the moving iron core 14 is configured to move toward the stationary iron core 15 and drive the first push rod 11 to directly contact the moving contact assembly 2 and push the moving contact assembly 2 to move when the force acting on the magnetic field is greater than the preload force on the moving iron core, until the moving iron core 14 and the stationary iron core 15 are in an abutted state and the moving contact assembly 2 is separated from the stationary contact assembly 3;

[0055] The moving iron core 14 is further configured to keep the moving iron core 14 and the static iron core 15 in a separated state when the force applied by the magnetic field is less than or equal to the pre-tightening force applied to the moving iron core.

[0056] In the present application, the first electromagnetic driver 13 further includes a first spring 16. The movable iron core 14 is provided with a first limiting structure, and the stationary iron core 15 is provided with a second limiting structure. The first limiting structure and the second limiting structure are arranged opposite each other. One end of the first spring 16 is connected to the first limiting structure, and the other end of the first spring 16 is connected to the second limiting structure. It can be understood that the movable iron core 14 and the stationary iron core 15 are connected by the first spring 16, and the movable iron core 14 and the stationary iron core 15 can switch between a separated state and an abutting state to provide driving force. Specifically, when the current in the switch circuit is less than the preset current, the first spring 16 keeps the moving iron core 14 and the static iron core 15 in a separated state, the moving contact assembly 2 is in contact with the static contact assembly 3, and the electrical circuit is connected; when the current in the switch circuit is greater than or equal to the preset current, the current in the conductive circuit rises rapidly, a large amount of magnetic field is generated in the conductive wire, and the moving iron core 14 is magnetized. When the magnetic force acting on the moving iron core 14 is greater than the pre-tightening force of the spring 16 on the moving iron core, it moves toward the static iron core 15 and drives the first push rod 11 to directly contact the moving contact assembly 2 and push the moving contact assembly 2 to move until the moving iron core 14 and the static iron core 15 are in abutment, and the moving contact assembly 2 is separated from the static contact assembly 3, thereby disconnecting the electrical circuit.

[0057] It is understood that when the movable iron core 14 and the stationary iron core 15 are switched from a separated state to an abutted state, or from an abutted state to a separated state, the first electromagnetic driving member 13 is connected to the first push rod 11, thereby driving the first push rod 11 to move, providing a driving force to drive the first push rod 11. Furthermore, a striking head 12 may be provided at the second end of the first push rod 11, and the striking head 12 is adapted to directly contact the contact assembly 4.

[0058] In some optional embodiments, the first electromagnetic driver 13 further includes a first spring 16, and the movable iron core 14 and the stationary iron core 15 are connected via the first spring 16. The first spring is used to provide a preload force to the movable iron core 14, thereby separating the movable iron core 14 and the stationary iron core 15. It is understood that the selection of the first spring 16 is related to the preset current, and the movable iron core 14 and the stationary iron core 15 can switch between a separated state and an abutting state.

[0059] The switch device proposed in the present application further includes an arc extinguishing assembly 5 , which includes a first arc extinguishing member and a second arc extinguishing member that are spaced apart, and a moving contact 41 is located between the first arc extinguishing member and the second arc extinguishing member.

[0060] In some optional embodiments, the first arc extinguishing member is used to extinguish the arc generated by the first moving contact and the first static contact 33, and the second arc extinguishing member is used to extinguish the arc generated by the second moving contact and the second static contact 34. The arc extinguishing assembly 5 includes an insulating member, a grid group, a grid support plate, and an outlet barrier assembly. The present application includes at least one arc extinguishing assembly, the first arc extinguishing assembly is located near the first static contact 33, and the second arc extinguishing assembly is located near the second static contact 34. The first arc extinguishing assembly and the second arc extinguishing assembly both include an arc extinguishing chamber and a plurality of grids. The plurality of grids are arranged in the arc extinguishing chamber and are spaced apart. Along the arrangement direction of the plurality of grids, one of the two outermost grids has an arc striking pin, which extends out of the arc extinguishing chamber. The gas discharged from the arc extinguishing chamber may contain charged particles, and the grids can absorb the charged particles in the gas.

[0061] In the present application, the arc is led to the arc extinguishing chamber grid through the arc-starting pin. Multiple grids arranged at intervals can divide the arc into multiple sections, and the arc voltage will increase. When the arc voltage is higher than the power supply voltage, the arc extinguishing conditions are met to achieve the arc extinguishing effect. At the same time, the grid also plays a role in cooling the arc; the switch assembly also includes a first arc-starting member and a second arc-starting member, and the first arc-starting member and the second arc-starting member are respectively arranged at both ends of the moving contact 41, one end of the first arc-starting member is connected to the moving contact 41, and the other end of the first arc-starting member extends toward the direction of the first arc-extinguishing assembly, and the first arc-starting member is used to lead the arc generated by the moving contact 41 and the first static contact 33 to the first arc-extinguishing assembly, one end of the second arc-starting member is connected to the moving contact 41, and the other end of the second arc-starting member extends toward the direction of the second arc-extinguishing assembly, and the second arc-starting member is used to lead the arc generated by the moving contact 41 and the second static contact 34 to the second arc-extinguishing assembly.

[0062] The present application also proposes a vehicle, which includes the above-mentioned switching device. Through the above-mentioned arrangement, when a short circuit occurs in the vehicle circuit, the safety and reliability of the vehicle's electronic components are greatly improved.

[0063] The relevant descriptions of the embodiments of the switching device in the above embodiments are also applicable to the switching circuits and vehicles of the embodiments of the present application and will not be repeated. It should be noted that the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0066] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A switch device, characterized in that: include: a contact assembly, the contact assembly being used to connect a switch circuit in a first state and to disconnect the switch circuit in a second state; a tripping device, the tripping device being configured to directly contact and drive the contact assembly to switch from the first state to the second state, thereby disconnecting the switch electrical circuit; The contact assembly includes a static contact assembly and a moving contact assembly, the first state is that the moving contact assembly is in contact with the static contact assembly, and the second state is that the moving contact assembly is separated from the static contact assembly; a second electromagnetic driving member connected to the moving contact assembly and configured to drive the moving contact assembly into contact with the static contact assembly, thereby conducting the switch circuit; The tripping device can directly contact and drive the moving contact assembly to move, so that the moving contact assembly is separated from the static contact assembly to disconnect the switch electrical circuit.

2. The switch device according to claim 1, characterized in that The contact assembly includes a first connecting terminal and a second connecting terminal; the contact assembly is connected in series to the switch circuit through the first connecting terminal and the second connecting terminal.

3. The switch device according to claim 2, characterized in that The static contact assembly includes a first static contact and a second static contact arranged at intervals, wherein the first static contact and the second static contact are connected to the first connecting terminal and the second connecting terminal respectively; When the moving contact assembly contacts the static contact assembly, the first static contact and the second static contact are connected via the moving contact assembly, so that the first connecting terminal and the second connecting terminal are electrically connected, thereby conducting the switch circuit; When the tripping device directly contacts and drives the moving contact assembly to separate from the static contact assembly, the first static contact and the second static contact are both disconnected from the moving contact assembly, and the circuit between the first connecting terminal and the second connecting terminal is broken to disconnect the switch electrical circuit.

4. The switch device according to claim 2, characterized in that The moving contact assembly and the static contact assembly are connected to the first connecting terminal and the second connecting terminal respectively; When the moving contact assembly contacts the static contact assembly, the first connecting terminal and the second connecting terminal are electrically connected via the moving contact assembly and the static contact assembly, thereby conducting the switch electrical circuit; When the tripping device directly contacts and drives the moving contact assembly to separate from the static contact assembly, the circuit between the first connecting terminal and the second connecting terminal is broken, thereby disconnecting the switch electrical circuit.

5. The switch device according to claim 2, characterized in that: The moving contact assembly includes a first moving contact and a second moving contact arranged at an interval, wherein the first moving contact and the second moving contact are connected to the first connecting terminal and the second connecting terminal respectively; When the moving contact assembly contacts the static contact assembly, the first moving contact and the second moving contact are connected via the static contact assembly, so that the first connecting terminal and the second connecting terminal are electrically connected to complete the switch circuit; When the tripping device directly contacts and drives the moving contact assembly to separate from the static contact assembly, the first moving contact and the second moving contact are both disconnected from the moving contact assembly, and the circuit between the first connecting terminal and the second connecting terminal is broken to disconnect the switch electrical circuit.

6. The switch device according to claim 1, characterized in that The tripping device comprises: a first push rod, the first push rod being used to apply an impulse to the contact assembly when in action; a first electromagnetic driving member, the first electromagnetic driving member being fixedly connected to the first end of the first push rod; A conductive wire, the conductive wire surrounds the first electromagnetic drive component, the conductive wire is suitable for being conductively connected to the switch electrical circuit, and the first electromagnetic drive component drives the first push rod to directly contact the moving contact assembly and push the moving contact assembly to move when the magnetic field generated by the current flowing through the conductive wire exerts a force on the first electromagnetic drive component that is greater than the pre-tightening force on the first electromagnetic drive component, thereby separating the moving contact assembly from the static contact assembly to disconnect the switch electrical circuit.

7. The switch device according to claim 6, characterized in that The first electromagnetic driving member includes a moving iron core and a stationary iron core arranged opposite to each other, wherein the moving iron core and the stationary iron core can be switched between a separation state and an abutment state. When the movable iron core and the static iron core are in the separated state, the movable contact assembly contacts the static contact assembly; The movable iron core is configured to move toward the stationary iron core and drive the first push rod to directly contact the movable contact assembly and push the movable contact assembly to move when the force applied to the magnetic field is greater than the preload force applied to the movable iron core, until the movable iron core and the stationary iron core are in the abutment state and the movable contact assembly is separated from the stationary contact assembly; The moving iron core is further configured to keep the moving iron core and the static iron core in the separated state when the force applied to the magnetic field is less than or equal to the pre-tightening force applied to the moving iron core.

8. The switch device according to claim 7, characterized in that The first electromagnetic driving member further includes a first spring; The movable iron core and the static iron core are connected via the first spring, and the first spring is used to provide the pre-tightening force to the movable iron core so that the movable iron core and the static iron core are in a separated state.

9. The switch device according to claim 3, characterized in that: Also includes: An arc extinguishing assembly, the arc extinguishing assembly comprising a first arc extinguishing member and a second arc extinguishing member arranged at intervals; The moving contact assembly comprises a first moving contact and a second moving contact which are spaced apart from each other, and the moving contact assembly is located between the first arc extinguishing member and the second arc extinguishing member; The first arc extinguishing member is used to extinguish the arc generated by the first moving contact and the first static contact, and the second arc extinguishing member is used to extinguish the arc generated by the second moving contact and the second static contact.

10. A vehicle, characterized in that: A switch device comprising the switch device according to any one of claims 1 to 9.

Images