A relay and vehicle switch assembly

Abstract

The utility model relates to contactor technical field especially relates to a relay and vehicle switch subassembly, and the relay includes first shell, armature, first connecting piece, first coil, permanent magnet, first movable contact row and first coil framework, first coil framework is fixed in first installation cavity, and first coil is around first coil framework, and first coil framework is equipped with first through -hole, and first through -hole is along the axial penetration first coil framework of coil, and permanent magnet sets up in first through -hole, and armature is movably arranged in permanent magnet, and first movable contact row is located the outside of first shell, and first connecting piece is worn in first through -hole, and first connecting piece is connected between armature and first movable contact row, and first movable contact row is equipped with first movable contact point on the side surface of first coil framework back, and first movable contact point is used for with the static contact point of contactor and the conductive contact point of contactor's conducting plate suction. Can simplify the structure of vehicle switch subassembly, and reduce the space that vehicle switch subassembly occupies.

Description

Technical Field

[0001] This utility model relates to the field of contactor technology, and in particular to a relay and vehicle switch assembly. Background Technology

[0002] The vehicle switch assembly is an automatic safety control device that controls the physical connection between the power battery and the vehicle's high-voltage system.

[0003] An existing vehicle switching assembly includes a contactor, a heating relay, and a fast-charging relay. The contactor is electrically connected between the battery and the load. When connected, the battery supplies power to the load. The input terminal of the fast-charging relay is connected to a fast-charging interface, and the output terminal of the fast-charging relay is connected to the battery. When the moving and stationary contacts of the fast-charging relay are closed, the circuit between the fast-charging interface and the battery is connected, and the charging gun charges the battery through the fast-charging interface. The input terminal of the heating relay is connected to a power source, and the output terminal of the heating relay is connected to a heating element. When the moving and stationary contacts of the heating relay are closed, the circuit between the heating element and the power source is connected, and the heating element heats the battery.

[0004] However, existing vehicle switch components, such as contactors, heating relays, and fast charging relays, are set up independently, occupying a large amount of vehicle space and making installation inconvenient. Summary of the Invention

[0005] This utility model provides a relay and vehicle switch assembly, which aims to solve the problem that existing vehicle switch assemblies, where contactors, heating relays and fast charging relays are set up independently, occupy a large space in the vehicle and are inconvenient to install.

[0006] To address the aforementioned problems, this utility model provides a relay comprising a first housing, an armature, a first connector, a first coil, a permanent magnet, a first movable contact block, and a first coil frame. The first housing has a first mounting cavity, the first coil frame is fixed to the first mounting cavity, the first coil is wound around the first coil frame, the first coil frame has a first through hole, the first through hole penetrates the first coil frame along the axial direction of the coil, the permanent magnet is disposed in the first through hole, and the armature is movably disposed in the permanent magnet. The first movable contact bar is located outside the first housing. The first housing has a first through hole communicating with the first through hole on one side wall facing the first movable contact bar. The first through hole is coaxially arranged with the first coil. The first connector passes through the first through hole and is connected between the armature and the first movable contact bar. The first movable contact bar has a first movable contact on one side facing away from the first coil frame. The first movable contact is used to engage with the stationary contact of the contactor and the conductive contact of the conductive plate of the contactor.

[0007] Optionally, the relay further includes a first elastic element, and a first receiving groove is provided on the side of the armature facing the first through hole. One end of the first elastic element abuts against the inner wall of the groove on the side of the first receiving groove facing the first through hole, and the other end of the first elastic element abuts against the inner wall of the mounting cavity on the side of the cavity facing the armature.

[0008] Optionally, the first elastic element is a first spring, and the first spring is sleeved on the first connecting member.

[0009] Optionally, the relay further includes a second elastic element, and a second receiving groove is provided on the side of the first housing facing the first movable contact block. One end of the second elastic element abuts against the inner wall of the groove on the side of the second receiving groove facing the first movable contact block, and the other end of the second elastic element abuts against the side of the first movable contact block facing the first through hole.

[0010] Optionally, a third receiving groove is provided on the side of the first movable contact bar facing the first through hole, and the end of the second elastic member away from the armature abuts against the inner wall of the third receiving groove facing the first through hole.

[0011] Optionally, the second elastic element is a second spring, which is sleeved on the first connecting member.

[0012] According to the relay provided in this embodiment of the present invention, the first moving contact block is disposed outside the first housing, such that the first moving contact on the first moving contact block is located outside the first housing, and can engage with the stationary contact on the stationary contact block of the contactor outside the first housing. It shares a stationary contact block with the contactor, which is convenient for integration into the contactor. The integrated design of the relay and the contactor can simplify the structure of the vehicle switch assembly, reduce the space occupied by the vehicle switch assembly, and facilitate installation.

[0013] This utility model embodiment also provides a vehicle switch assembly, including a housing, a contactor, a conductive plate, and the aforementioned relay. The first housing is fixed to the housing. The contactor includes a stationary contact bar, a second moving contact bar, a second connector, and an electromagnetic drive unit. The housing has a first chamber, and the electromagnetic drive unit is installed in the first chamber. The stationary contact bar and the second moving contact bar are located outside the first chamber. The housing has a second through hole communicating with the first chamber, and the second connector passes through the second through hole. The stationary contact bar is fixed to the housing. The conductive plate and the stationary contact bar are used for electrical connection with vehicle electrical components. The conductive plate and the relay are located outside the first cavity. The conductive plate is provided with conductive contacts. The stationary contact bar is provided with a first stationary contact and a second stationary contact. There are two first moving contacts. The two second moving contacts are respectively provided at both ends of the first moving contact bar. One of the first moving contacts is used to engage with the first stationary contact, and the other first moving contact is used to engage with the conductive contact. The second connector is connected between the second moving contact block and the electromagnetic drive unit. The second moving contact block is provided with a second moving contact for engaging with the second stationary contact.

[0014] Optionally, the housing further includes a second chamber, which is independently disposed from the first chamber. The first outer shell is fixed to the second chamber, the first movable contact bar is located in the second chamber, and the first stationary contact and the conductive contact are located in the second chamber. The housing is provided with a third through hole and a fourth through hole that communicate with the second chamber. The static contact bar extends out of the housing through the third through hole, and the conductive plate extends out of the housing through the fourth through hole.

[0015] Optionally, the housing further includes a third chamber, which is connected to the first chamber via the second perforation and is also connected to the second chamber, with the second movable contact bar located within the third chamber.

[0016] Optionally, the stationary contact bar is provided with a first conductive hole, and the conductive plate is provided with a second conductive hole. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a relay provided in an embodiment of the present invention; Figure 2 for Figure 1 Internal structure diagram; Figure 3 This is a schematic diagram of the structure of a vehicle switch assembly provided in an embodiment of the present invention; Figure 4 for Figure 3 Internal structure diagram; Figure 5for Figure 4 Assembly diagram of each component and the housing; Figure 6 This is a structural schematic diagram of a vehicle switch assembly provided in two embodiments of the present invention.

[0019] Reference numerals in the accompanying drawings: 1. First housing; 2. First moving contact block; 3. First moving contact; 4. First mounting cavity; 5. First coil frame; 6. First through hole; 7. First coil; 8. Permanent magnet; 9. Armature; 10. First connector; 11. First elastic element; 12. First receiving groove; 13. Second elastic element; 14. Second receiving groove; 15. Third receiving groove; 16. Housing; 17. Fast charging relay; 18. Heating relay; 19. Stationary iron core; 20. Second coil frame; 21. Second coil; 22. Second connector; 23. Second moving contact block; 24. Second moving contact; 25. Stationary contact block 26. First part; 27. Second part; 28. First stationary contact; 29. ​​Second stationary contact; 30. Conductive plate; 31. Conductive contact; 32. First chamber; 33. Second chamber; 34. Third chamber; 35. Left positioning groove; 36. Right positioning groove; 37. Left positioning post; 38. Right positioning post; 39. First through hole; 40. Second through hole; 41. Third through hole; 42. Fourth through hole; 43. First conductive post; 44. Second conductive post; 45. First conductive hole; 46. Second conductive hole; 47. First mounting groove; 48. Second mounting groove; 49. Circuit board; 50. Conductive sheet. Detailed Implementation

[0020] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a relay, including a first housing 1, an armature 9, a first connector 10, a first coil 7, a permanent magnet 8, a first movable contact block 2, and a first coil frame 5. The first housing 1 is provided with a first mounting cavity 4, the first coil frame 5 is fixed in the first mounting cavity 4, the first coil 7 is wound around the first coil frame 5, the first coil frame 5 is provided with a first through hole 6, the first through hole 6 penetrates the first coil frame 5 along the axial direction of the coil, the permanent magnet 8 is disposed in the first through hole 6, and the armature 9 is movably disposed in the permanent magnet 8.

[0023] The first movable contact 2 is located outside the first housing 1. The side wall of the first housing 1 facing the first movable contact 2 is provided with a first through hole 39 communicating with the first through hole 6. The first through hole 39 is coaxially arranged with the first coil 7. The first connector 10 passes through the first through hole 39 and is connected between the armature 9 and the first movable contact 2. The side surface of the first movable contact 2 facing away from the first coil frame 5 is provided with a first movable contact 3. The first movable contact 3 is used to engage with the stationary contact of the contactor and the conductive contact 31 of the conductive plate 30 of the contactor.

[0024] In this embodiment, the first moving contact plate 2 is disposed outside the first housing 1, such that the first moving contact 3 on the first moving contact plate 2 is located outside the first housing 1, and can engage with the stationary contact on the stationary contact plate 25 of the contactor outside the first housing 1. It shares a stationary contact plate 25 with the contactor, which is convenient for integration into the contactor. The integrated design of the relay and the contactor can simplify the structure of the vehicle switch assembly, reduce the space occupied by the vehicle switch assembly, and facilitate installation.

[0025] In this embodiment, the first coil frame 5 is coaxially arranged with the coil, and the first through hole 39 is coaxially arranged with the first coil frame 5.

[0026] In this embodiment, the first connector 10 extends along the axial direction of the coil.

[0027] In this embodiment, the first movable contact bar 2 is perpendicular to the first connector 10.

[0028] In this embodiment, the first movable contact plate 2 is symmetrical about the first connector 10. Each end of the first movable contact plate 2 is provided with a first movable contact 3. One of the first movable contacts 3 is used to engage with the first stationary contact on the stationary contact plate 25 of the contactor, and the other first movable contact 3 is used to engage with the conductive contact 31 on the conductive plate 30 in the vehicle switch assembly. Thus, the stationary contact plate 25 and the conductive plate 30 of the contactor are connected through the first movable contact plate 2, thereby making the first electrical device connected to the conductive plate 30 and the second electrical device connected to the stationary contact plate 25 electrically connected.

[0029] In this embodiment, the relay can be used as the vehicle's heating relay 18. The first electrical component is the vehicle's power supply, and the second electrical component is the vehicle's heating element. The current from the power supply flows through the conductive plate 30 and the stationary contact bar 25 to the heating element, thereby enabling the heating element to operate and heat the vehicle's battery.

[0030] In this embodiment, the relay can also serve as the vehicle's fast charging relay 17. The first electrical component is the vehicle's battery, and the second electrical component is the vehicle's fast charging interface. When the vehicle is charging, the charging gun of the charging pile is plugged into the fast charging interface, so that high voltage electricity flows sequentially through the charging pile, the charging gun, the fast charging interface, the static contact bar 25, and the conductive plate 30 to the vehicle's battery, thereby fast charging the battery.

[0031] In one embodiment, the relay further includes a first elastic member 11, and a first receiving groove 12 is provided on the side of the armature 9 facing the first through hole 39. One end of the first elastic member 11 abuts against the inner wall of the groove on the side of the first receiving groove 12 facing the first through hole 39, and the other end of the first elastic member 11 abuts against the inner wall of the cavity on the side of the mounting cavity facing the armature 9.

[0032] In this embodiment, the first receiving groove 12 is coaxially arranged with the coil.

[0033] In this embodiment, the first receiving groove 12 is directly opposite the first through hole 39.

[0034] In this embodiment, the first elastic element is disposed between the armature 9 and the first outer shell 1. When the coil is energized, the magnetic field generated by the coil drives the first moving contact 2 to move away from the first through hole 39, so that the two first moving contacts 3 are attracted to the first stationary contact 28 and the conductive contact 31 respectively. At this time, the first elastic element 11 is compressed. When the coil is de-energized, the first elastic element 11 drives the armature 9 and the first moving contact 2 to move in the opposite direction while restoring its own deformation. At the same time, the permanent magnet 8 also applies a magnetic attraction force to the armature 9, so that the two first moving contacts 3 are disengaged from the first stationary contact 28 and the conductive contact 31 respectively.

[0035] In this embodiment, the coil's wire extends out of the first housing 1 and is used to connect to the vehicle's controller. When the battery needs to be heated or fast-charged, the controller controls the coil to be energized or de-energized.

[0036] In one embodiment, the first elastic element 11 is a first spring, which is sleeved on the first connecting element 10.

[0037] In this embodiment, a first spring is used as the first elastic element 11, which has a simple structure and is easy to install.

[0038] In one embodiment, the relay further includes a second elastic member 13. A second receiving groove 14 is provided on the side of the first housing 1 facing the first movable contact 2. One end of the second elastic member 13 abuts against the inner wall of the groove of the second receiving groove 14 facing the first movable contact 2, and the other end of the second elastic member 13 abuts against the side of the first movable contact 2 facing the first through hole 39.

[0039] In this embodiment, the second elastic element 13 is disposed between the first movable contact 2 and the first outer shell 1. When the coil is energized, the magnetic field generated by the coil drives the first movable contact 2 to move away from the first through hole 39, so that the two first movable contacts 3 are attracted to the first stationary contact 28 and the conductive contact 31 respectively. At this time, the second elastic element 13 applies a force away from the armature 9 to the first movable contact 2 to maintain the attraction between the first movable contact 3 and the stationary contact and the conductive contact 31. It should be noted that the elastic force generated by the second elastic element 13 is less than the sum of the elastic force applied by the first elastic element 11 to the armature 9 and the magnetic attraction force applied by the permanent magnet 8 to the armature 9 after the coil is de-energized. When the coil is de-energized, the first elastic element 11 drives the armature 9 and the first movable contact 2 to move in the opposite direction while restoring its own deformation, so that the two first movable contacts 3 are disengaged from the first stationary contact 28 and the conductive contact 31 respectively. At this time, the second elastic element 13 is compressed again between the first movable contact 2 and the first outer shell 1.

[0040] In one embodiment, a third receiving groove 15 is provided on the side of the first movable contact plate 2 facing the first through hole 39, and the end of the second elastic member 13 away from the armature 9 abuts against the inner wall of the third receiving groove 15 facing the first through hole 39.

[0041] In this embodiment, the end of the second elastic member 13 away from the armature 9 is located in the third receiving groove 15. The third receiving groove 15 can limit the second elastic member 13 and prevent the second elastic member 13 from shaking.

[0042] In one embodiment, the second elastic element 13 is a second spring, which is sleeved on the first connecting element 10.

[0043] In this embodiment, a second spring is used as the second elastic element 13, which has a simple structure and is easy to install.

[0044] According to the relay provided in this embodiment of the present invention, the first moving contact block 2 is disposed outside the first housing 1, such that the first moving contact 3 on the first moving contact block 2 is located outside the first housing 1, and can be attracted to the stationary contact on the stationary contact block 25 of the contactor outside the first housing 1. It shares a stationary contact block 25 with the contactor, which is convenient for integration into the contactor. The integrated design of the relay and the contactor can simplify the structure of the vehicle switch assembly, reduce the space occupied by the vehicle switch assembly, and facilitate installation.

[0045] In addition, such as Figures 3 to 6As shown, an embodiment of the present invention also provides a vehicle switch assembly, including a housing 16, a contactor, a conductive plate 30, and the aforementioned relay. The first outer shell 1 is fixed to the housing 16. The contactor includes a stationary contact bar 25, a second moving contact bar 23, a second connector 22, and an electromagnetic drive unit. A first chamber 32 is provided inside the housing 16. The electromagnetic drive unit is installed in the first chamber 32. The stationary contact bar 25 and the second moving contact bar 23 are located outside the first chamber 32. A second through hole 40 communicating with the first chamber 32 is provided on the housing 16. The second connector 22 passes through the second through hole 40.

[0046] The stationary contact bar 25 is fixed to the housing 16. The conductive plate 30 and the stationary contact bar 25 are used for electrical connection with vehicle electrical components. The conductive plate 30 and the relay are located outside the first chamber 32. The conductive plate 30 is provided with conductive contacts 31. The stationary contact bar 25 is provided with first stationary contacts 28 and second stationary contacts 29. There are two first moving contacts 3. Two second moving contacts 24 are respectively provided at both ends of the first moving contact bar 2. One of the first moving contacts 3 is used to engage with the first stationary contact 28, and the other first moving contact 3 is used to engage with the conductive contact 31.

[0047] The second connector 22 connects the second movable contact block 23 and the electromagnetic drive unit. The second movable contact block 23 is provided with a second movable contact 24 for engaging with the second stationary contact 29.

[0048] In this embodiment, there are two relays: a fast charging relay 17 and a heating relay 18.

[0049] In this embodiment, the stationary contact array 25 includes a first part 26 and a second part 27. The first part 26 and the second part 27 are spaced apart about the left and right sides of the first chamber 32. Each of the first part 26 and the second part 27 is provided with a first stationary contact 28 and a second stationary contact 29.

[0050] In this embodiment, there are two conductive plates 30, which are spaced apart from the first chamber 32. Each of the two conductive plates 30 has a conductive contact 31.

[0051] In this embodiment, the fast charging relay 17 is located on the left side of the first chamber 32. The fast charging relay 17 is located above the first part 26 and the conductive plate 30 on the left side. The first part 26 is used for electrical connection with the vehicle's battery, the second part 27 is used for electrical connection with the vehicle's load, and the conductive plate 30 is used for electrical connection with the vehicle's fast charging interface.

[0052] In this embodiment, when the two second moving contacts 24 on the second moving contact block 23 are respectively attracted to the second stationary contacts 29 on the first part 26 and the second part 27, the vehicle's battery is electrically connected to the load, so that the battery supplies power to the load. When the charging gun is inserted into the fast charging interface, the vehicle's controller controls the coil of the fast charging relay 17 to be energized, and the two first moving contacts 3 on the first moving contact block 2 are respectively attracted to the first stationary contact 28 on the first part 26 and the conductive contact 31 on the left conductive plate 30, so that the fast charging interface is connected to the battery, and the battery is charged through the fast charging interface.

[0053] In this embodiment, the heating relay 18 is located on the right side of the first chamber 32. The heating relay 18 is located above the second part 27 and the conductive plate 30 on the right side. The second part 27 is used for electrical connection with the vehicle's power supply, and the conductive plate 30 is used for electrical connection with the vehicle's heating element.

[0054] In this embodiment, when the vehicle battery temperature is too low, the vehicle controller controls the coil of the heating relay 18 to be energized. The two first moving contacts 3 on the first moving contact block 2 are respectively attracted to the first stationary contact 28 on the second part 27 and the conductive contact 31 on the right conductive plate 30, so that the power supply is connected to the heating element and the battery is heated by the heating element.

[0055] In this embodiment, the electromagnetic drive unit includes two coils, a second coil frame 20, a moving iron core, a second connector 22, a stationary iron core 19, and a reaction spring. The second coil frame 20 is fixedly installed in the first chamber 32. The stationary iron core 19 is arranged around the second coil frame 20. The second coil 21 is wound around the second coil frame 20. The second coil frame 20 has a second through hole inside for the connector to pass through in the first direction. The second connector 22 is connected between the moving contact bar and the moving iron core.

[0056] In this embodiment, when the second coil 21 is energized, an induced magnetic field is generated around the second coil 21. Driven by the induced magnetic field, the moving iron core drives the second connector 22 and the second moving contact block 23 to rise, so that the moving iron core and the stationary iron core 19 are attracted to each other, and the second moving contact 24 and the second stationary contact 29 are attracted to each other, thereby connecting the vehicle's battery to the load. At this time, the reaction spring is compressed. When the second coil 21 is de-energized, the induced magnetic field disappears, and under the action of the reaction spring, the second moving contact block 23 descends, so that the second moving contact 24 and the second stationary contact 29 are disconnected, and the moving iron core separates from the stationary iron core 19.

[0057] In this embodiment, the electromagnetic drive unit is existing technology and will not be described in detail here.

[0058] In one embodiment, the housing 16 is further provided with a second chamber 33, which is independently provided with respect to the first chamber 32. The first outer shell 1 is fixed to the second chamber 33, the first movable contact 2 is located in the second chamber 33, and the first stationary contact 28 and the conductive contact 31 are located in the second chamber 33.

[0059] The housing 16 is provided with a third through hole 41 and a fourth through hole 42 that communicate with the second chamber 33. The static contact bar 25 extends out of the housing 16 through the third through hole 41, and the conductive plate 30 extends out of the housing 16 through the fourth through hole 42.

[0060] In this embodiment, there are two second chambers 33, which are spaced apart from the first chamber 32.

[0061] In this embodiment, the fast charging relay 17 is installed in the second chamber 33 on the left side, and the heating relay 18 is installed in the second chamber 33 on the right side. Both second chambers 33 are provided with a third through hole 41 and a fourth through hole 42.

[0062] In this embodiment, the first contact of the first part 26 extends upward into the second chamber 33 on the left side, and the first part 26 extends out of the housing 16 from the third through hole 41 on the left side for electrical connection with the battery. The conductive plate 30 on the left side is located in the second chamber 33 on the left side and extends out of the housing 16 from the fourth through hole 42 on the left side for electrical connection with the fast charging interface. The first stationary contact 28 of the second part 27 extends upward into the second chamber 33 on the right side, and the second part 27 extends into the housing 16 from the fourth through hole 42 on the right side for electrical connection with the load and power supply. The conductive plate 30 on the right side extends out of the housing 16 from the fourth through hole 42 on the right side for electrical connection with the heating element.

[0063] In this embodiment, both the heating relay 18 and the fast charging relay 17 are located in the second chamber 33 for easy installation.

[0064] In one embodiment, the housing 16 is further provided with a third chamber 34, which is connected to the first chamber 32 through the second through hole 40 and is connected to the second chamber 33. The second movable contact bar 23 is located in the third chamber 34.

[0065] In this embodiment, the third chamber 34 is located below the first chamber 32 and the second chamber 33, and the second chamber 33 is in communication with the third chamber 34.

[0066] In this embodiment, the first part 26 has a U-shaped structure with the opening facing left, the second part 27 has a U-shaped structure with the opening facing right, and the third chamber 34 is provided with a left positioning post 37 and a right positioning post 38. The left positioning post 37 is inserted into the slot with the opening facing left in the first part 26, and the right positioning post 38 is inserted into the slot with the opening facing right in the second part 27.

[0067] In this embodiment, the inner wall of the third chamber 34 facing the second movable contact bar 23 is also provided with a left positioning groove 35 and a right positioning groove 36. The first part 26 is installed in the left positioning groove 35, and the left positioning post 37 is located in the left positioning groove 35. The second part 27 is installed in the right positioning groove 36, and the right positioning post 38 is located in the right positioning groove 36.

[0068] In one embodiment, the stationary contact bar 25 is provided with a first conductive hole 45, and the conductive plate 30 is provided with a second conductive hole 46.

[0069] In this embodiment, the housing 16 is provided with a first mounting groove 47 and a second mounting groove 48. A first conductive post 43 is provided in the first mounting groove 47, and a static contact bar 25 is installed in the first mounting groove 47. The first conductive post 43 is conductively inserted through a first conductive hole 45. A second conductive post 44 is provided in the second mounting groove 48, and a conductive plate 30 is installed in the second mounting groove 48. The second conductive post 44 is conductively inserted through a second conductive hole 46.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The second embodiment of this utility model also provides a vehicle switch assembly. The heating relay 18 can be a common structure. The heating relay 18 is installed on the circuit board 49 of the vehicle BDU. The two stationary contacts on the stationary contact block 25 of the heating relay 18 are respectively soldered to the circuit board 49. One of the stationary contacts is connected to the power supply through the printed circuit on the circuit board 49, and the other stationary contact is connected to a conductive sheet 50 through the printed circuit on the circuit board 49. The conductive sheet 50 can provide a conductive connection for the heating element.

[0072] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A relay, characterized in that, The device includes a first outer shell (1), an armature (9), a first connector (10), a first coil (7), a permanent magnet (8), a first movable contact bar (2), and a first coil frame (5). The first outer shell (1) has a first mounting cavity (4), the first coil frame (5) is fixed in the first mounting cavity (4), the first coil (7) is wound around the first coil frame (5), the first coil frame (5) has a first through hole (6), the first through hole (6) passes through the first coil frame (5) along the axial direction of the coil, the permanent magnet (8) is disposed in the first through hole (6), and the armature (9) is movably disposed in the permanent magnet (8). The first movable contact (2) is located outside the first housing (1). The first housing (1) has a first through hole (39) on one side wall facing the first movable contact (2) that communicates with the first through hole (6). The first through hole (39) is coaxially arranged with the first coil (7). The first connector (10) passes through the first through hole (39). The first connector (10) is connected between the armature (9) and the first movable contact (2). The first movable contact (2) has a first movable contact (3) on one side facing away from the first coil frame (5). The first movable contact (3) is used to engage with the stationary contact of the contactor and the conductive contact (31) of the conductive plate (30) of the contactor.

2. The relay according to claim 1, characterized in that, The relay also includes a first elastic element (11), and a first receiving groove (12) is provided on the side of the armature (9) facing the first through hole (39). One end of the first elastic element (11) abuts against the inner wall of the groove on the side of the first receiving groove (12) facing the first through hole (39), and the other end of the first elastic element (11) abuts against the inner wall of the cavity on the side of the mounting cavity facing the armature (9).

3. The relay according to claim 2, characterized in that, The first elastic element (11) is a first spring, which is sleeved on the first connecting element (10).

4. The relay according to claim 3, characterized in that, The relay also includes a second elastic element (13). The first housing (1) has a second receiving groove (14) on the side facing the first movable contact (2). One end of the second elastic element (13) abuts against the inner wall of the groove on the side facing the first movable contact (2), and the other end of the second elastic element (13) abuts against the side of the first movable contact (2) facing the first through hole (39).

5. The relay according to claim 4, characterized in that, The first movable contact plate (2) has a third receiving groove (15) on the side facing the first through hole (39), and the end of the second elastic member (13) away from the armature (9) abuts against the inner wall of the third receiving groove (15) facing the first through hole (39).

6. The relay according to claim 4, characterized in that, The second elastic element (13) is a second spring, which is sleeved on the first connecting element (10).

7. A vehicle switch assembly, characterized in that, The device includes a housing (16), a contactor, a conductive plate (30), and a relay as described in any one of claims 1 to 6. The first housing (1) is fixed to the housing (16). The contactor includes a stationary contact bar (25), a second moving contact bar (23), a second connector (22), and an electromagnetic drive unit. A first chamber (32) is provided inside the housing (16). The electromagnetic drive unit is installed in the first chamber (32). The stationary contact bar (25) and the second moving contact bar (23) are located outside the first chamber (32). A second through hole (40) communicating with the first chamber (32) is provided on the housing (16). The second connector (22) passes through the second through hole (40). The stationary contact bar (25) is fixed to the housing (16). The conductive plate (30) and the stationary contact bar (25) are used for electrical connection with vehicle electrical components. The conductive plate (30) and the relay are located outside the first chamber (32). The conductive plate (30) is provided with conductive contacts (31). The stationary contact bar (25) is provided with a first stationary contact (28) and a second stationary contact (29). There are two first moving contacts (3). Two second moving contacts (24) are respectively provided at both ends of the first moving contact bar (2). One of the first moving contacts (3) is used to engage with the first stationary contact (28), and the other first moving contact (3) is used to engage with the conductive contact (31). The second connector (22) is connected between the second moving contact block (23) and the electromagnetic drive unit. The second moving contact block (23) is provided with a second moving contact (24) for engaging with the second stationary contact (29).

8. The vehicle switch assembly according to claim 7, characterized in that, The housing (16) is further provided with a second chamber (33), which is independently set with respect to the first chamber (32). The first outer shell (1) is fixed to the second chamber (33), the first moving contact (2) is located in the second chamber (33), and the first stationary contact (28) and the conductive contact (31) are located in the second chamber (33). The housing (16) is provided with a third through hole (41) and a fourth through hole (42) communicating with the second chamber (33). The static contact bar (25) extends out of the housing (16) through the third through hole (41), and the conductive plate (30) extends out of the housing (16) through the fourth through hole (42).

9. The vehicle switch assembly according to claim 8, characterized in that, The housing (16) is also provided with a third chamber (34), which is connected to the first chamber (32) through the second perforation (40) and is connected to the second chamber (33). The second movable contact bar (23) is located in the third chamber (34).

10. The vehicle switch assembly according to claim 7, characterized in that, The static contact bar (25) is provided with a first conductive hole (45), and the conductive plate (30) is provided with a second conductive hole (46).

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