Static contact assembly, switching device and vehicle

Abstract

The utility model relates to a static contact assembly, a switching device and a vehicle, the static contact assembly comprises a static terminal, a static contact, a communication section and a first arc striking structure, the two ends of the communication section are connected with the static terminal and the static contact respectively, and the communication section comprises a bending part, so that the communication section can generate magnetic blow-out force for guiding an electric arc to move towards one side of an arc extinguishing assembly of the switching device; the first arc striking structure is arranged on the communication section and is connected with one end, provided with the static contact, of the communication section. The static contact and the first arc striking structure are equipotential, so that the electric arc on the static contact can quickly enter the arc extinguishing assembly when the switching device is switched off, in addition, the bending part of the communication section can also increase the magnetic blow-out force for blowing the electric arc into the arc extinguishing assembly, and the arc extinguishing effect is improved. Therefore, the electric arc can enter the arc extinguishing assembly more quickly, the staying time of the electric arc at the static contact is reduced, the situation that the electric arc burns out the static contact is reduced or even avoided, and the service life and the quality of the switching device are ensured.

Description

Technical Field

[0001] The present disclosure relates to the field of switch technology, and in particular, to a stationary contact assembly, a switch device and a vehicle. Background Art

[0002] The static contacts of the static contact assembly in the switch are used to connect with the moving contacts to achieve the connection of the switch. When the switch is disconnected, that is, when the static contacts and the moving contacts are separated, an arc will be generated. Most of the current switches cannot guide the arc quickly, which may cause the arc to stay at the static contacts or the moving contacts for too long, thereby burning the contacts and damaging the switch device. Utility Model Content

[0003] The purpose of the present disclosure is to provide a static contact assembly, a switch device and a vehicle, so that the arc can quickly enter the arc extinguishing assembly, so as to at least partially solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the present disclosure provides a static contact assembly, including: a static terminal; a static contact; a connecting section, whose two ends are respectively connected to the static terminal and the static contact, and the connecting section includes a bending portion so that the connecting section can generate a magnetic blowing force to guide the arc to move to one side of the arc extinguishing assembly of the switching device; and a first arc-striking structure, which is arranged on the connecting section and connected to one end of the connecting section where the static contact is arranged.

[0005] Optionally, the connecting section includes a first connecting section, a second connecting section and a third connecting section connected in sequence, the first connecting section and the third connecting section are arranged in parallel with each other, the second connecting section and the first connecting section are arranged perpendicular to the first connecting section to connect an end of the first connecting section away from the static terminal and an end of the third connecting section away from the static contact; the first arc-starting structure is arranged in the first connecting section, and the static contact is arranged in the third connecting section.

[0006] Optionally, the third connecting section has an arc section at one end away from the second connecting section, the static contact is arranged on the arc section, and the arc section is provided with a first arc-striking portion extending toward one side of the first arc-striking structure and connected to the first arc-striking structure.

[0007] Optionally, the first arc-striking structure includes a second arc-striking portion extending toward one side of the first arc-striking portion to be connected to the first arc-striking portion.

[0008] Optionally, an angle between the first arc-starting portion and the second arc-starting portion is configured to be 135°-180°.

[0009] Optionally, the distance between the static terminal and the first arc-striking structure is configured to be 0-15 mm.

[0010] According to a second aspect of the present disclosure, a switching device is provided, comprising: a moving contact assembly, comprising two moving contacts; two arc extinguishing assemblies, comprising an arc extinguishing chamber and a plurality of arc extinguishing sheets located in the arc extinguishing chamber and stacked along the extension direction of the arc extinguishing chamber, wherein the two arc extinguishing chambers are respectively arranged adjacent to the two moving contacts; a driving assembly, connected to the moving contact assembly, to drive the moving contact and the static contact to close or open; and the above-mentioned static contact assembly, wherein the number of the static contact assemblies is configured to be two, the two moving contacts can be respectively connected to the static contacts of the two static contact assemblies in an on-off manner, and at least part of the first arc-striking structure is stacked with the arc extinguishing sheets.

[0011] Optionally, the switch device further comprises a second arc-striking structure connected to the drive assembly and extending toward one side of the moving contact, and at least a portion of the second arc-striking structure is stacked with the arc-extinguishing sheet.

[0012] Optionally, the second arc-striking structure includes a connecting piece and a third arc-striking portion, the connecting piece is connected to the driving assembly and extends to one side of the arc extinguishing assembly, and a portion of the third arc-striking portion is fitted with the connecting piece and extends to one side of the moving contact, so as to be stacked with the arc extinguishing sheet and enable the moving contact and the third arc-striking portion to be connected to the same potential.

[0013] Optionally, the driving assembly includes a yoke, a driving structure and a push rod, the driving structure is arranged in the yoke, one end of the push rod is connected to the driving structure, and the other end passes through the yoke and is connected to the moving contact assembly, and the second arc-striking structure is connected to the yoke.

[0014] Optionally, the switching device also includes a shell and an electronic control protection drive board, the moving contact assembly, the arc extinguishing assembly, the drive assembly and the static contact assembly are arranged in the shell, and the electronic control protection drive board is arranged outside the shell and connected to the connecting section of the static contact assembly.

[0015] Optionally, a groove is provided on the outer peripheral side of the housing, and at least part of the static terminals of at least one of the two static contact assemblies are inserted into the groove.

[0016] According to a third aspect of the present disclosure, a vehicle is provided, comprising the above-mentioned switch device.

[0017] Through the above technical scheme, the static contact assembly of the present invention is provided with a first arc-striking structure on the connecting section, and the first arc-striking structure is also connected to one end of the connecting section where the static contact is provided, so that the static contact is at the same potential as the first arc-striking structure, thereby facilitating the arc on the static contact to quickly enter the arc extinguishing assembly when the switching device is disconnected. In addition, the bending portion of the connecting section will also increase the magnetic blowing force used to blow the arc into the arc extinguishing assembly, thereby further enabling the arc to enter the arc extinguishing assembly more quickly, reducing the time it stays at the static contact, reducing or even avoiding the situation where the arc burns the static contact, and ensuring the service life and quality of the switching device.

[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0020] Figure 1 is a structural schematic diagram of a stationary contact assembly provided by an embodiment of the present disclosure;

[0021] Figure 2 is a schematic diagram of the structure of a switch device provided by an embodiment of the present disclosure from a first perspective;

[0022] Figure 3 is a schematic diagram of the structure of the switch device provided by the embodiment of the present disclosure from a second viewing angle;

[0023] Figure 4 is a schematic diagram of the structure of a drive assembly provided in an embodiment of the present disclosure;

[0024] Figure 5 is a schematic diagram of the structure of a drive assembly provided in an embodiment of the present disclosure;

[0025] Figure 6 is a structural schematic diagram of an arc extinguishing assembly provided in an embodiment of the present disclosure;

[0026] Figure 7 is a schematic structural diagram of a switch device provided by an embodiment of the present disclosure from a third viewing angle;

[0027] Figure 8 A schematic diagram of the structure of a switch device provided by an embodiment of the present disclosure from a fourth perspective.

[0028] Description of Reference Numerals

[0029] 1-static terminal; 2-static contact; 3-connecting section; 31-first connecting section; 32-second connecting section; 33-third connecting section; 3301-arc section; 4-bending portion; 5-first arc-striking structure; 51-second arc-striking portion; 6-first arc-striking portion; 7-moving contact assembly; 71-moving contact; 8-arc extinguishing assembly; 81-arc extinguishing chamber; 82-arc extinguishing sheet; 9-driving assembly; 91-yoke; 92-driving structure; 93-push rod; 10-second arc-striking structure; 1001-connecting piece; 1002-third arc-striking portion; 11-housing; 12-groove; 13-electronic control protection driving board. DETAILED DESCRIPTION

[0030] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0031] In the present disclosure, unless otherwise specified, directional words such as "inside" and "outside" refer to "inside" and "outside" relative to the corresponding component's own contour. In addition, the terms "first", "second", "third", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limitations on the present disclosure.

[0032] The stationary contact assembly and the switch device in exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0033] like Figures 1 to 8As shown, in the first aspect of the present disclosure, a static contact assembly is provided, comprising a static terminal 1, a static contact 2, a connecting section 3 and a first arc-striking structure 5, wherein the two ends of the connecting section 3 are respectively connected to the static terminal 1 and the static contact 2, and the connecting section 3 includes a bending portion 4 so that the connecting section 3 can generate a magnetic blowing force to guide the arc to move toward one side of the arc extinguishing assembly 8 of the switching device; the first arc-striking structure 5 is arranged on the connecting section 3 and is electrically connected to one end of the connecting section 3 where the static contact 2 is arranged. Both ends of the first arc-striking structure 5 are connected to the connecting section 3, which enables the first arc-striking structure 5 to form a closed loop with the connecting section 3, so that the static contact 2 and the first arc-striking structure 5 are connected at the same potential, which can reduce the resistance encountered during the arc transfer process, thereby facilitating the arc on the static contact 2 to enter the arc extinguishing component 8 when the switching device is disconnected; and the bent portion 4 of the connecting section 3 will increase the magnetic field strength, thereby increasing the magnetic blowing force that can blow the arc into the arc extinguishing component 8, so as to further enable the arc to enter the arc extinguishing component 8 more quickly, reduce the time it stays at the static contact 2, reduce or even avoid the situation where the arc burns the static contact 2, and ensure the service life and quality of the switching device. Of course, in addition to enabling the first arc-striking structure 5 to be connected to the static contact 2 at the same potential, it can also exist as a branch circuit, that is, the current entering the static terminal 1 can either flow directly to the static contact 2 through the connecting section 3 to form a first conductive circuit, or flow to the static contact 2 through the first arc-striking structure 5 after entering the connecting section 3 to form a second conductive circuit, thereby reducing the current flowing on the connecting section 3 to a certain extent, reducing the heat generated by the static contact assembly, and ensuring the use efficiency of the static contact assembly. Specifically, the ratio of the resistance between the first conductive circuit and the second conductive circuit can be no more than 1:2, so as to better reduce the high temperature generated after the static contact assembly is turned on, and ensure the current-carrying capacity of the static contact assembly.

[0034] In some embodiments of the present disclosure, Figures 1 to 3 As shown, the connecting section 3 includes a first connecting section 31, a second connecting section 32 and a third connecting section 33 which are connected in sequence, the first connecting section 31 and the third connecting section 33 are arranged in parallel with each other at intervals, the second connecting section 32 is arranged perpendicular to the first connecting section 31 to connect the end of the first connecting section 31 away from the static terminal 1 and the end of the third connecting section 33 away from the static contact 2; that is, the connecting section 3 as a whole forms a U-shaped structure, the U-shaped structure can increase the magnetic field strength around the connecting section 3, thereby increasing the magnetic blowing force that blows the arc into the arc extinguishing component 8, the first arc-starting structure 5 is arranged on the first connecting section 31, and the static contact 2 is arranged on the third connecting section 33, so that the connection between the first arc-starting structure 5 and the connecting section 3 at the static contact 2 can be more convenient, for example, the first arc-starting structure 5 located on the first connecting section 31 can be at the same horizontal height as the static contact 2 located on the third connecting section 33, so that the first arc-starting structure 5 can be connected to the connecting section 3 at the static contact 2 at the shortest distance.

[0035] It should be noted that the connecting section 3 may also be constructed as other structures as long as it can increase the magnetic blowing force that blows the arc into the arc extinguishing assembly 8 .

[0036] In some embodiments, Figures 1 to 3 As shown, the end of the third connecting section 33 away from the second connecting section 32 has an arc section 3301, and the static contact 2 is arranged on the arc section 3301. The arc section 3301 can make the connecting line of the static contact 2 and the moving contact 71 arranged in parallel with the third connecting section 33, so that the moving contact assembly 7 with the moving contact 71 can be perpendicular to the third connecting section 33. Figure 7 The projections in the paper direction partially overlap, thereby reducing the space occupied by the switch device after assembly, reducing the overall volume of the switch device, and facilitating the subsequent use and installation of the switch device; and the arc segment 3301 is provided with a first arc-striking portion 6 extending toward one side of the first arc-striking structure 5 and connected to the first arc-striking structure 5. The first arc-striking portion 6 can facilitate the connection between the first arc-striking structure 5 and the side of the connecting segment 3 close to the static contact 2.

[0037] In order to further facilitate the connection between the first arc-striking structure 5 and the first arc-striking portion 6, as shown in FIG. Figures 1 to 3 As shown, the first arc-striking structure 5 may include a second arc-striking portion 51 extending toward one side of the first arc-striking portion 6 to be connected to the first arc-striking portion 6. In this way, it is possible to avoid over-striking the size of the first arc-striking portion 6 or the first arc-striking structure 5, which may affect assembly, and ensure the stability and efficiency of the two after connection. Specifically, the first arc-striking structure 5 may also include an arc-striking plate, which is an L-shaped structure as a whole, one side of the L-shaped arc-striking plate is connected to one side of the first connecting section 31 close to the static terminal 1, and the other side is connected to the second arc-striking portion 51, and then connected to the side of the third connecting section 33 close to the static contact 2 through the second arc-striking portion 51 and the first arc-striking portion 6 connected to the second arc-striking portion 51.

[0038] Alternatively, in some embodiments not shown, the first arc-striking structure 5 may not be connected to the first arc-striking portion 6, that is, there is a certain gap between the two, and this gap allows the arc generated at the static contact 2 to enter the first arc-striking structure 5 by arc jumping, and then enter the arc extinguishing assembly 8 under the guidance of the first arc-striking structure 5.

[0039] Specifically, the angle between the first arc-striking portion 6 and the second arc-striking portion 51 can be configured to be 135°-180°; the distance between the static terminal 1 and the first arc-striking structure 5 is configured to be 0-15mm, so that the staff can adjust the position of the above components according to different usage environments, thereby facilitating the installation of the static contact assembly.

[0040] In a second aspect of the present disclosure, a switch device is provided. Figures 3 to 8As shown, it includes a moving contact assembly 7, an arc extinguishing assembly 8, a driving assembly 9 and the above-mentioned static contact assembly, wherein the moving contact assembly 7 includes two moving contacts 71; the arc extinguishing assembly 8 is provided with two, including an arc extinguishing chamber 81 and a plurality of arc extinguishing sheets 82 located in the arc extinguishing chamber 81 and stacked along the extension direction of the arc extinguishing chamber 81, and the two arc extinguishing chambers 81 are respectively arranged adjacent to the two moving contacts 71; the driving assembly 9 is connected to the moving contact assembly 7 to drive the moving contact 71 and the static contact 2 to close or open; the number of static contact assemblies is configured to be two, and the two moving contacts 71 can be connected to the static contacts 2 of the two static contact assemblies in a switching manner, respectively, and at least part of the first arc-striking structure 5 is stacked with the arc extinguishing sheets 82. When the switch device is closed, the driving component 9 will drive the moving contact component 7 to move toward the side close to the static contact component, so that the two moving contacts 71 on the moving contact component 7 are respectively connected to the static contacts 2 on the two static contact components to connect the two static contact components. At this time, the current will enter the connecting section 3 from the static terminal 1 of one of the static contact components. Part of the current entering the connecting section 3 will directly flow into the static contact 2 through the connecting section 3, and the other part of the current will flow into the static contact 2 through the first arc-starting structure 5, so as to reduce the high temperature generated after the static contact component is connected by shunting, thereby ensuring the working efficiency of the static contact component. Subsequently, the current flows from the static contact 2 to the moving contact 71 connected to it, and flows to the other moving contact 71 through other components on the static contact component, such as the connecting bridge, so that the current flows into the other static contact. The static contact 2 on the component, the current on the other static contact 2 then flows to the static terminal 1 through the connecting section 3 and the first arc-striking structure 5, and thus the current conduction work is completed; when the switching device is disconnected, the driving component 9 drives the moving contact 71 and the static contact 2 to separate to disconnect the current path. In the process of separation of the moving contact 71 and the static contact 2, an arc will be generated between the two. At this time, since the first arc-striking structure 5 and the static contact 2 are connected at the same potential, it is convenient for the arc to quickly enter the arc extinguishing component 8; and the bending portion 4 of the connecting section 3 will increase the magnetic blowing force that can blow the arc into the arc extinguishing component 8, thereby further enabling the arc to enter the arc extinguishing component 8 more quickly, reducing the time it stays at the static contact 2, reducing or even avoiding the situation where the arc burns the static contact 2, and ensuring the service life and quality of the switching device.

[0041] In some embodiments of the present disclosure, Figure 3 and Figure 7As shown, the switch device further includes a second arc-striking structure 10 which is electrically connected to the drive assembly 9 and extends toward one side of the moving contact 71, and at least a portion of the second arc-striking structure 10 is stacked with the arc-extinguishing piece 82. The second arc-striking structure 10 arranged in this way can form a closed loop among the moving contact assembly 7, the second arc-striking structure 10 and the drive assembly 9, that is, the moving contact 71 can be connected to the side of the second arc-striking structure 10 close to the arc-extinguishing piece 82 at the same potential, thereby reducing the resistance encountered by the arc on the moving contact 71 during the transfer process, facilitating the arc on the moving contact 71 to quickly enter the arc-extinguishing assembly 8, and preventing the arc from damaging the moving contact 71.

[0042] Specifically, Figure 3 As shown, the second arc-striking structure 10 includes a connecting member 1001 and a third arc-striking portion 1002. The connecting member 1001 is connected to the driving assembly 9 and extends to one side of the arc extinguishing assembly 8. Part of the third arc-striking portion 1002 is in contact with the connecting member 1001 and extends to one side of the moving contact 71 so as to be stacked with the arc extinguishing sheet 82 and enable the moving contact 71 and the third arc-striking portion 1002 to be connected to the same potential. The connector 1001 can be arranged at the bottom of the driving assembly 9 and extend to the outside of the driving assembly 9 until it is stacked with the arc extinguishing piece 82, and the third arc-starting portion 1002 can be connected to the connector 1001 by fasteners such as screws or bolts to reduce the distance between the moving contact 71 and the connector 1001, so that the arc generated at the moving contact 71 can be guided into the arc extinguishing chamber 81 through the third arc-starting portion 1002 by arc jumping and eliminated by the arc extinguishing piece 82, and because the moving contact 71 and the third arc-starting portion 1002 are connected at the same potential, it is also convenient for the arc to quickly enter the arc extinguishing chamber 81. Of course, the moving contact 71 can also be provided with an arc-starting piece extending to one side of the third arc-starting portion 1002 to further facilitate the transfer of the arc.

[0043] In addition, if Figure 3 , Figure 7 and Figure 8 As shown, two arc extinguishing assemblies 8 are arranged on opposite sides of the driving assembly 9. Based on this, the connecting piece 1001 can extend to both sides of the driving assembly 9 at the bottom of the driving assembly 9 at the same time. In this way, the third arc striking parts 1002 are respectively provided on both sides of a connecting piece 1001, and there is no need to set another connecting piece 1001 to extend to the other side of the driving assembly 9, so as to reduce the number of connecting pieces 1001.

[0044] In some embodiments of the present disclosure, Figures 3 to 5As shown, the driving assembly 9 includes a yoke 91, a driving structure 92 and a push rod 93. The driving structure 92 is arranged in the yoke 91. One end of the push rod 93 is connected to the driving structure 92, and the other end passes through the yoke 91 and is connected to the moving contact assembly 7. The second arc-starting structure 10 is connected to the yoke 91. Specifically, the driving structure 92 can be a bistable electromagnet, which can include two coils spaced apart inside the yoke 91, a permanent magnet is arranged between the two coils, and a static iron core and a moving iron core connected to the push rod 93 are arranged inside. When the switching device needs to be turned on, a positive current can be passed into the coil, and the magnetic force of the coil will drive the moving iron core to move toward the side close to the static contact 2, so that the push rod 93 drives the moving contact 71 on the moving contact assembly 7 to move toward the static contact 2 until the two are connected, and then the coil is de-energized, and the moving iron core can also remain stationary under the action of the magnetic force of the permanent magnet; and when the switching device needs to be disconnected, a reverse current can be passed into the coil to move the moving iron core in the opposite direction, so that the moving contact 71 and the static contact 2 are separated.

[0045] In some embodiments, Figure 8 As shown, the switch device also includes a housing 11 and an electronic control protection drive board 13. The moving contact assembly 7, the arc extinguishing assembly 8, the drive assembly 9 and the static contact assembly are arranged in the housing 11. The electronic control protection drive board 13 is arranged outside the housing 11 and is connected to the connecting section 3 of the static contact assembly. The electronic control protection drive board 13 can collect the current signal on the connecting section 3 and control the drive assembly 9 according to the current signal. For example, a current collector can be provided on the connecting section 3, and the current collector is connected to the electronic control protection drive board 13 by signal. The electronic control protection drive board 13 controls the movement of the drive assembly 9 according to the magnitude of the current collected by the current collector and the current threshold value set in advance.

[0046] The current collector may be a shunt or a current sensor.

[0047] In addition, if Figure 7 and Figure 8 As shown, the outer peripheral side of the housing 11 of the present disclosure is provided with a groove 12, and at least part of the static terminal 1 of at least one of the two static contact assemblies is inserted into the groove 12. In this way, during the wiring process of the static terminal 1, the groove 12 can reduce the torque and overturning moment received by the static terminal 1 to a certain extent, thereby ensuring that the external force will not be transmitted to the inside of the switch device, and ensuring the stability of the switch device during wiring.

[0048] A third aspect of the present disclosure provides a vehicle, comprising the above-mentioned switch device, and the vehicle has all the beneficial effects of the above-mentioned switch device, which are not limited herein by the present disclosure.

[0049] In summary, the present disclosure exemplarily illustrates the use process of the stationary contact assembly and the switch device.

[0050] When the switch device is closed, the push rod 93 of the drive assembly 9 will push the moving contact assembly 7 to move in the direction of the static contact assembly, so that the moving contact 71 and the static contact 2 are connected to achieve circuit conduction; when the switch device is disconnected, the push rod 93 of the drive assembly 9 will drive the moving contact assembly 7 to move in the direction away from the static contact assembly, and when the moving contact 71 and the static contact 2 are separated, an arc will be generated between the two. Since the first arc-starting structure 5 on the static contact assembly and the static contact 2 are connected at the same potential, the resistance encountered during the arc transfer process can be reduced, thereby facilitating the arc on the static contact 2 to enter the arc extinguishing assembly 8 when the switch device is disconnected; and the bent portion 4 of the connecting section 3 will increase the magnetic field strength, thereby increasing the magnetic blowing force that can blow the arc into the arc extinguishing assembly 8, so as to further enable the arc to enter the arc extinguishing assembly 8 more quickly, reduce the time it stays at the static contact 2, reduce or even avoid the situation where the arc burns the static contact 2, and ensure the service life and quality of the switch device.

[0051] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0053] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A stationary contact assembly, characterized in that: include: Static terminal; static contact; A connecting section, both ends of which are connected to the static terminal and the static contact respectively, and the connecting section includes a bending portion so that the connecting section can generate a magnetic blowing force to guide the arc to move toward one side of the arc extinguishing component of the switch device; and The first arc striking structure is arranged in the connecting section and connected to one end of the connecting section where the static contact is arranged.

2. The stationary contact assembly according to claim 1, characterized in that: The communication section comprises a first communication section, a second communication section and a third communication section connected in sequence, the first communication section and the third communication section are arranged in parallel with each other, and the second communication section is arranged perpendicular to the first communication section to connect an end of the first communication section away from the static terminal and an end of the third communication section away from the static contact; The first arc-striking structure is arranged in the first connecting section, and the static contact is arranged in the third connecting section.

3. The stationary contact assembly according to claim 2, characterized in that: The third connecting section has an arc section at one end away from the second connecting section, the static contact is arranged in the arc section, and the arc section is provided with a first arc-striking portion extending toward one side of the first arc-striking structure and connected to the first arc-striking structure.

4. The stationary contact assembly according to claim 3, characterized in that: The first arc-striking structure includes a second arc-striking portion extending toward one side of the first arc-striking portion to be connected to the first arc-striking portion.

5. The stationary contact assembly according to claim 4, characterized in that: The included angle between the first arc-starting portion and the second arc-starting portion is configured to be 135°-180°.

6. The stationary contact assembly according to any one of claims 1 to 5, characterized in that: The distance between the static terminal and the first arc-starting structure is configured to be 0-15 mm.

7. A switch device, characterized in that: include: A moving contact assembly, comprising two moving contacts; There are two arc extinguishing assemblies, including an arc extinguishing chamber and a plurality of arc extinguishing sheets located in the arc extinguishing chamber and stacked along the extending direction of the arc extinguishing chamber, and the two arc extinguishing chambers are respectively arranged adjacent to the two moving contacts; a driving assembly connected to the moving contact assembly to drive the moving contact and the stationary contact to close or open; and The static contact assembly described in any one of claims 1 to 6, wherein the number of the static contact assemblies is configured to be two, the two moving contacts can be respectively connected to the static contacts of the two static contact assemblies in an on-off manner, and at least part of the first arc-striking structure and the arc-extinguishing sheet are arranged in a stacked manner.

8. The switch device according to claim 7, characterized in that: The switch device further comprises a second arc-striking structure connected to the driving assembly and extending toward one side of the moving contact, and at least a portion of the second arc-striking structure is stacked with the arc-extinguishing sheet.

9. The switch device according to claim 8, characterized in that: The second arc-striking structure includes a connecting piece and a third arc-striking portion, the connecting piece is connected to the driving assembly and extends to one side of the arc extinguishing assembly, and a portion of the third arc-striking portion is fitted with the connecting piece and extends to one side of the moving contact, so as to be stacked with the arc extinguishing sheet and enable the moving contact and the third arc-striking portion to be connected to the same potential.

10. The switch device according to claim 8 or 9, characterized in that: The driving assembly includes a yoke, a driving structure and a push rod. The driving structure is arranged in the yoke. One end of the push rod is connected to the driving structure, and the other end passes through the yoke and is connected to the moving contact assembly. The second arc-starting structure is connected to the yoke.

11. The switch device according to claim 7, characterized in that: The switch device also includes a shell and an electronic control protection drive board. The moving contact assembly, the arc extinguishing assembly, the drive assembly and the static contact assembly are arranged in the shell. The electronic control protection drive board is arranged outside the shell and connected to the connecting section of the static contact assembly.

12. The switch device according to claim 11, characterized in that A groove is provided on the outer peripheral side of the housing, and at least part of the static terminals of at least one of the two static contact assemblies are inserted into the groove.

13. A vehicle, characterized in that: A switch device comprising any one of claims 7 to 12.

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