Relay, power distribution device and vehicle

Abstract

The invention relates to a relay, a power distribution device and a vehicle, the relay comprises a moving contact unit and an electromagnetic system, the moving contact unit comprises at least two moving contact assemblies which are arranged along a first direction and can be connected in parallel, the electromagnetic system and the moving contact unit are arranged along a second direction perpendicular to the first direction, and the electromagnetic system comprises a coil assembly and an armature assembly. The coil assembly comprises at least two coil windings arranged in the first direction, the coil windings jointly drive the armature assembly to move during excitation, and the armature assembly can drive all the movable contact assemblies to move. According to the relay, the power distribution device and the vehicle, the relay can reduce the contact resistance and realize miniaturization at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of power distribution control, and in particular to a relay, a power distribution device and a vehicle. Background Art

[0002] As an electronic control device, relay has a control system (also known as input circuit) and a controlled system (also known as output circuit). It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, relays play the role of automatic adjustment, safety protection, and circuit conversion in the circuit, and are widely used in industrial control, household appliances, and automobiles. With the promotion and application of relays in various products, customers have also put forward more requirements for the performance of relays. For example, relays are required to have lower contact resistance.

[0003] In the related art, the contact system of the relay usually reduces the overall contact resistance of the relay by setting a parallel structure. The lower the contact resistance requirement, the more branches in the parallel structure of the relay, and the larger the volume of the contact system. Therefore, the electromagnetic system needs to provide a greater driving force to ensure that the contact system operates. The increase in driving force can be achieved by increasing the number of coil turns or the external driving voltage. Among them, increasing the number of turns on the same coil winding will cause the volume of the coil to be too large, which is not conducive to the miniaturization of the relay and makes the relay unable to adapt to the application in a small installation environment. Increasing the external driving voltage will result in greater energy consumption, which is not conducive to meeting user needs. Summary of the invention

[0004] Based on this, it is necessary to provide a relay, a power distribution device and a vehicle to address the problem of how to reduce contact resistance while achieving miniaturization.

[0005] In one aspect, the present application provides a relay, comprising:

[0006] A moving contact unit, comprising at least two moving contact components arranged along a first direction and capable of being connected in parallel;

[0007] The electromagnetic system is arranged along the second direction perpendicular to the first direction with the moving contact unit. The electromagnetic system includes a coil assembly and an armature assembly. The coil assembly includes at least two coil windings arranged along the first direction. When each of the coil windings is energized, they jointly drive the armature assembly to move. The armature assembly can drive all the moving contact assemblies to move.

[0008] In the above-mentioned relay, the moving contact unit includes at least two moving contact components arranged in a first direction and capable of being connected in parallel, which is conducive to reducing the contact resistance. Moreover, the coil assembly includes at least 2 coil windings, and each coil winding is arranged in the first direction, that is, the parallel branches formed by the coil windings and the moving contact components are arranged in a consistent manner in the first direction, which is conducive to improving space utilization. While increasing the magnetic driving force of the coil assembly to ensure that sufficient driving force can be provided for multiple moving contact components, the occupied area of ​​the relay in the plane perpendicular to the first aspect is reduced. Therefore, the relay of the present application achieves miniaturization while taking into account a significant reduction in contact resistance, so as to meet the use requirements. Since the electromagnetic system and the moving contact unit are arranged along the second direction, the electromagnetic system can face each moving contact component in the second direction and easily establish an assembly relationship and form a linkage with each moving contact component. This arrangement method is conducive to avoiding the electromagnetic system and the moving contact unit from occupying too much space in the first direction due to being staggered along the first direction, so that the size of the relay in the first direction is mainly determined by the moving contact unit, so that the size in the first direction can be reasonably and conveniently controlled according to needs. In addition, this arrangement method also makes the distance between the driving end of the electromagnetic system and each moving contact component along the second direction closer and easier to reach consistency, which is conducive to reducing the required use. The length of the pushing mechanism can be reduced, consumables and costs can be reduced, and deformation and breakage of the pushing mechanism due to excessive length can be avoided. Also, since the distance between the driving end of the electromagnetic system and each moving contact component along the second direction can be easily consistent, it is beneficial to symmetrically set the pushing mechanism between the electromagnetic system and each moving contact component, so that the force on each moving contact component is more uniform, contact vibration or jitter is reduced, the driving force applied by the pushing mechanism is more balanced, the contact pressure of each moving contact component is more balanced, and the contact resistance can be guaranteed to meet the predetermined requirements. It can also avoid greater local stress concentration of the pushing mechanism and affect the mechanical life. In addition, it is also beneficial to standardized production and reduce production cycle and production cost.

[0009] In some embodiments, the size of each coil winding in the second direction is less than or equal to the size of the coil winding in the first direction. In this way, the coil winding can reduce the space occupied in the second direction and increase the space utilization in the first direction, so that the layout of the coil winding and the moving contact unit in the first direction is more reasonable, which is conducive to the miniaturization of the relay.

[0010] In some embodiments, the armature assembly is located between the coil assembly and the moving contact unit along the second direction. In this way, the armature assembly can be closer to the moving contact unit, which helps to reduce the length of the lever arm for the armature assembly to drive the moving contact unit to move, thereby making the structure compact and realizing miniaturization of the relay. Moreover, it is beneficial to reduce the length of the pushing member (such as the first pushing card and the second pushing card in some of the following embodiments) connected between the armature assembly and the moving contact unit along the second direction, avoiding deformation and fracture of the pushing member. In addition, it can also avoid the need for the pushing member to avoid the coil assembly, reducing the structural complexity.

[0011] In some embodiments, the armature assembly can rotate around a rotation axis parallel to the first direction based on the change in the polarity of the coil assembly. Thus, the rotation of the armature assembly around the rotation axis is used to drive the moving contact assembly to move. Since the rotation axis is parallel to the first direction, the arrangement between the armature assembly and the moving contact unit is compact, which is beneficial for miniaturization.

[0012] In some embodiments, the movement directions of the moving contact assemblies are all parallel to the second direction. Since the moving contact assemblies in the moving contact unit are arranged along the first direction, setting the movement directions of the moving contact assemblies to be all parallel to the second direction only requires providing enough movement space for the moving contact assemblies in the second direction to meet the contact movement requirements, without the need to provide movement space for the moving contact assemblies in the first direction for contact movement. Subsequently, the movement directions of the moving contact assemblies are avoided from the arrangement direction of multiple groups of moving contact assemblies. Therefore, this structural setting makes reasonable use of the space in the first direction and the second direction, avoiding the size of the relay in a certain direction (the first direction or the second direction) being too large and being unfavorable for miniaturization design. Also, since the movement directions of the moving contact assemblies are consistent with the arrangement directions of the electromagnetic system and the moving contact unit, and the armature assembly can easily move along the second direction to output power, compared with the situation where the movement directions of the moving contact assemblies are designed in other directions, the embodiments of the present application do not need to design a complex movement direction conversion mechanism, making the overall structure of the relay simpler and beneficial for reducing the volume.

[0013] In some embodiments, the relay further includes a pushing mechanism, the pushing mechanism includes multiple groups of pushing cards arranged along the first direction, multiple groups of the pushing cards are all connected to the armature assembly and correspond to the moving contact assemblies respectively, and the armature assembly can drive each moving contact assembly to move through multiple groups of the pushing cards. The technical solution of this embodiment avoids the situation that the size of a single pushing card along the first direction is too large and is prone to deformation or fracture, improving the reliability of the pushing mechanism to push such a large moving contact unit.

[0014] In some embodiments, the relay further includes a lead-out unit correspondingly arranged with the moving contact unit. The lead-out unit includes a first static lead-out component and a second static lead-out component. The first static lead-out component and the second static lead-out component are respectively arranged on two sides of the moving contact unit along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs. Each of the moving contact components is configured to be able to switch between a first switch state and a second switch state under the drive of the armature component. Wherein, in the first switch state, each of the moving contact components disconnects the electrical path between the first static lead-out component and the second static lead-out component; in the second switch state, each of the moving contact components conducts the electrical path between the first static lead-out component and the second static lead-out component. In this embodiment, the static lead-out components in the first static lead-out component and the second static lead-out component are used to meet the needs of current input and current output, and the first static lead-out component and the second static lead-out component are respectively arranged on two sides of the moving contact unit along the third direction, thereby reducing the space occupied by the lead-out unit in the first direction and the second direction for the moving contact unit, so as to facilitate improving the layout compactness among the components in the moving contact unit, and thus is beneficial to the miniaturization of the relay.

[0015] In some embodiments, at least one of the moving contact components arranges at least two parallel branches in a plane perpendicular to the first direction. Since the moving contact unit includes at least two moving contact components arranged along the first direction and capable of being connected in parallel, the parallel structure is expanded in the first direction; since the moving contact component arranges at least two parallel branches in a plane intersecting the first direction, the parallel structure is expanded by using the plane intersecting the first direction, and the parallel structure is set in two spatial dimensions at the same time, which can not only increase the number of parallel paths, but also avoid the parallel structure occupying too large a volume in a certain direction, resulting in an over-large volume of the relay. Therefore, the relay of the present application realizes miniaturization while significantly reducing the contact resistance, so as to facilitate meeting the use requirements.

[0016] In some embodiments, each of the moving contact components includes two moving contact pieces. The two moving contact pieces of the same moving contact component can contact or separate from each other under the drive of the armature component. Wherein, when the two moving contact pieces contact each other, they both form the parallel branch and conduct the electrical path between the first static lead-out component and the second static lead-out component, and when the two moving contact pieces separate from each other, they disconnect the electrical path between the first static lead-out component and the second static lead-out component. In this embodiment, the two moving contact pieces are used to contact each other to form a parallel branch to conduct the electrical path between the first static lead-out component and the second static lead-out component, thereby reducing the contact resistance.

[0017] In some embodiments, in the same moving contact assembly, two moving contacts are arranged along the second direction, and the moving contacts have a fixed end and a swing end, wherein the fixed end of one moving contact is fixed to the first static lead-out assembly, and the fixed end of the other moving contact is fixed to the second static lead-out assembly, and the two swing ends are respectively used to contact or separate from the fixed end of the other moving contact along the second direction. The moving contact adopts a swing-type moving spring with a fixed end and a swing end, which not only realizes the construction of a parallel structure with a simple structure, but also can utilize the electromagnetic force generated by the two when current is passed to each other to increase the contact pressure of the two and improve the ability to resist large fault current, so that the relay product can be suitable for high voltage or high current application environments.

[0018] In some embodiments, in at least one of the moving contact components, the two moving contacts each include a plurality of flow guiding branches and the flow guiding branches on the two moving contacts correspond one to one, and the plurality of flow guiding branches are arranged along the first direction, and are configured to be connected in parallel when the first static lead-out component and the second static lead-out component are electrically conductive, and to be connected in parallel with each of the flow guiding branches on the other moving contact. Since the arrangement direction of the plurality of flow guiding branches and the arrangement direction of the plurality of moving contact components are both the first direction, under such a setting, the moving contact unit can not only utilize the plurality of moving contact components to realize the expansion of the parallel branches in the first direction, but also utilize the plurality of flow guiding branches to realize the expansion of the parallel branches inside the moving contact component in the first direction, which is further beneficial to reduce the contact resistance; and since the number of parallel branches is increased, the moving contact unit in the relay is not easy to be completely disconnected due to jitter, that is, the probability of all parallel branches of the relay being disconnected is greatly reduced, which is beneficial to ensure the working stability of the relay, so that the relay has good impact resistance and can well meet the mechanical impact resistance requirements. For certain application scenarios where there are bumps during use (such as use in cars), this relay has obvious advantages.

[0019] In some embodiments, the number of the moving contact units and the lead-out units is at least two, and each of the moving contact units is arranged along the second direction. When each of the moving contact units is in the first switching state, it is electrically connected with the adjacent moving contact units respectively, so that in the two lead-out units corresponding to the two adjacent moving contact units, the first static lead-out component of one of the lead-out units and the second static lead-out component of the other lead-out unit are connected in series with each other; when each of the moving contact units is in the second switching state, each of the lead-out units is disconnected from each other. In this embodiment, the moving contact units can be switched in series and parallel to adapt to certain special usage scenarios, such as being used in a battery management system of an automobile to optimize the charging and discharging functions of the battery pack.

[0020] In some embodiments, the number of the moving contact units is two, namely a first moving contact unit and a second moving contact unit; the number of the lead-out units is two, namely a first lead-out unit and a second lead-out unit; the first moving contact unit is located between the armature assembly and the second moving contact unit, the first lead-out unit is arranged corresponding to the first moving contact unit, and the second lead-out unit is arranged corresponding to the second moving contact unit. Thus, the first lead-out unit and the second lead-out unit are used to meet the current input and current output requirements of the first moving contact unit and the second moving contact unit respectively.

[0021] In some embodiments, both the first static lead-out assembly and the second static lead-out assembly include a plurality of static lead-out members arranged along the first direction. Each of the static lead-out members in the first static lead-out assembly and each of the static lead-out members in the second static lead-out assembly respectively correspond to each of the moving contact assemblies one by one. Each moving contact assembly can conduct or disconnect the electrical path between the corresponding two static lead-out members. In this embodiment, the static lead-out members in the first static lead-out assembly and the second static lead-out assembly are used to meet the needs of current input and current output. And since the arrangement direction of the plurality of static lead-out members in the first static lead-out assembly and the arrangement direction of the plurality of static lead-out members in the second static lead-out assembly are both the first direction, it is consistent with the arrangement direction of the plurality of moving contact assemblies, which is beneficial to the miniaturization of the relay.

[0022] In some embodiments, the relay further includes a mounting base. The moving contact unit is installed in the mounting base, and all the static lead-out members extend out of the mounting base along the third direction.

[0023] In some embodiments, the lead-out unit further includes a first external lead-out member and a second external lead-out member. One end of each of the static lead-out members in the first static lead-out assembly extending out of the mounting base is connected to the first external lead-out member; one end of each of the static lead-out members in the second static lead-out assembly extending out of the mounting base is connected to the second external lead-out member. Thus, the first static lead-out piece and the third static lead-out piece can be regarded as the same lead-out end for use, and the second static lead-out piece and the fourth static lead-out piece can be regarded as the same lead-out end for use, so that the first moving contact assembly and the second moving contact assembly can be connected in parallel.

[0024] In some embodiments, the relay further includes a mounting base. The moving contact unit is installed in the mounting base, and all the static lead-out members have connection terminals located outside the mounting base. The connection terminals are all on the same side of the mounting base in the second direction. Since the connection terminals are all on the same side of the mounting base in the second direction, it is convenient to connect to an external circuit and reduces the occupied space.

[0025] In some embodiments, all of the connection terminals are located outside the outer wall surface of the mounting base that is closer to the moving contact unit in the second direction; and / or, all of the connection terminals are arranged in the same plane perpendicular to the second direction.

[0026] Since all of the connection terminals are located outside the outer wall surface of the mounting base that is closer to the moving contact unit in the second direction, the distance from each connection terminal to the moving contact unit in the moving contact unit is small. Thus, the conductive material consumed by each static lead-out piece for leading out the connection terminal outside the mounting base can be reduced, thereby reducing the cost.

[0027] Since all of the connection terminals are arranged in the same plane perpendicular to the second direction, the occupied space of each connection terminal in the second direction is small, which is beneficial to the miniaturization of the relay and makes it easier to adapt to the limited installation space, such as the narrow battery compartment space in an automobile; in addition, it is also beneficial to support the compact side-by-side installation of multiple relays.

[0028] In some embodiments, each of the moving contact units includes two moving contact assemblies; each of the first static lead-out assemblies and each of the second static lead-out assemblies includes two static lead-out pieces; the mounting base includes a base body and a first mounting plate; the first mounting plate is connected to the inner wall of the base body, and the first mounting plate divides the inner cavity of the base body into a first mounting cavity and a second mounting cavity along the first direction. The first mounting cavity has a first mounting opening, the second mounting cavity has a second mounting opening, and the first mounting opening and the second mounting opening are located at both ends of the mounting base in the first direction; the inner cavity of the base body further has a third mounting cavity communicating with both the first mounting cavity and the second mounting cavity; the third mounting cavity has a third mounting opening, and the third mounting opening is located at one end of the mounting base in the first direction; the two moving contact assemblies can be respectively installed into the first mounting cavity from the first mounting opening and into the second mounting cavity from the second mounting opening; the third mounting opening is for the electromagnetic system to be installed into the third mounting cavity. In this embodiment, the static lead-out pieces in the first static lead-out assembly and the second static lead-out assembly are used to meet the needs of current input and current output, and since the arrangement directions of the two static lead-out pieces in the first static lead-out assembly and the arrangement directions of the two static lead-out pieces in the second static lead-out assembly are both the first direction, they are consistent with the arrangement directions of the two moving contact assemblies, which is beneficial to the miniaturization of the relay.

[0029] Since the first mounting opening and the second mounting opening are located at two ends of the mounting base in the first direction, the two moving contact assemblies can be respectively mounted into the first mounting cavity from the first mounting opening and into the second mounting cavity from the second mounting opening. As a result, the side wall of the mounting base only needs to be provided with grooves corresponding to the positions where the two moving contact assemblies are located respectively to meet the requirements for leading out the electrical leading-out parts of the corresponding moving contact assemblies, instead of opening a whole groove along the first direction to meet the requirements for leading out the electrical leading-out parts of the two moving contact assemblies. Subsequently, the technical solution of the present application reduces the groove depth to reduce the probability of deformation of the mounting base, thereby improving the reliability of the relay product. Moreover, the electromagnetic system can be inserted into the seat body from the third mounting opening. Since the third mounting opening is located at one end of the mounting base in the first direction, the electromagnetic system and the moving contact unit can be mounted in the same direction, so that both the electromagnetic system and the moving contact unit can be easily mounted onto the mounting base, with a simple structure and convenient installation, and it is helpful to carry out assembly with the aid of automated equipment, and the installation efficiency is high. Since the first mounting plate is connected to the inner wall of the seat body, the first mounting plate can play a role in strengthening the structure of the seat body, making the seat body not easily deformed. Subsequently, even when the static contact point is impacted by the moving contact point during the contact action of the moving contact assembly and an impact force is generated on the seat body, the seat body can reduce the probability of deformation or damage under the strengthening action of the first mounting plate, making the relay not easily damaged and prolonging the service life of the relay.

[0030] In some embodiments, the number of the moving contact units is two, namely a first moving contact unit and a second moving contact unit; the number of the leading-out units is two, namely a first leading-out unit and a second leading-out unit; the first moving contact unit and the second moving contact unit are arranged along the second direction, the first moving contact unit is located between the armature assembly and the second moving contact unit, the first leading-out unit is correspondingly arranged with the first moving contact unit, and the second leading-out unit is correspondingly arranged with the second moving contact unit; when the two moving contact units are in the first switching state, the two moving contact units are electrically connected in cooperation so that the first static leading-out assembly in the first leading-out unit and the second static leading-out assembly of the second leading-out unit are connected in series with each other; when the two moving contact units are in the second switching state, the two leading-out units are arranged in an open circuit. In this way, the first leading-out unit and the second leading-out unit are respectively used to meet the current input and current output requirements of the first moving contact unit and the second moving contact unit, and the relay can also perform series-parallel function switching to adapt to some special usage scenarios, such as being applied to the battery management system of an automobile to optimize the charging and discharging functions of the battery pack.

[0031] In some embodiments, the two static lead-out components of each of the first static lead-out components are a first static lead-out sheet and a third static lead-out sheet respectively, and the two static lead-out components of each of the second static lead-out components are a second static lead-out sheet and a fourth static lead-out sheet respectively; in the first lead-out unit and the second lead-out unit, the connection terminals of the first static lead-out sheet and the third static lead-out sheet of one of them are arranged between the connection terminals of the first static lead-out sheet and the third static lead-out sheet of the other along the first direction, and the connection terminals of the second static lead-out sheet and the fourth static lead-out sheet of one of them are arranged between the connection terminals of the second static lead-out sheet and the fourth static lead-out sheet of the other along the first direction. In this embodiment, with this structure, at least one group of two connection terminals for connecting the same end of the circuit can be arranged adjacent to each other, thereby facilitating subsequent circuit connection and insulation design between the connection terminals connected to different load terminals.

[0032] In some embodiments, in the first lead-out unit and the second lead-out unit, the connection terminals of the two first static lead-out sheets are arranged adjacent to each other in the first direction, the connection terminals of the two second static lead-out sheets are arranged adjacent to each other in the first direction, the connection terminals of the two third static lead-out sheets are arranged adjacent to each other in the first direction; the connection terminals of the two fourth static lead-out sheets are arranged adjacent to each other in the first direction. With this structural arrangement, at least one group of two connection terminals for connecting the same end of the circuit can be arranged adjacent to each other, so as to facilitate the external connection of these two connection terminals to the same end of the circuit. Compared with the situation where two connection terminals for externally connecting the same terminals are separated by other connection terminals, this structural arrangement of the present application is beneficial to reducing the connection difficulty and is beneficial to making isolation between two connection terminals for externally connecting different terminals.

[0033] In some embodiments, the relay further includes an isolation member, the isolation member is relatively fixed to the mounting base, and electrically isolates the connection terminals of the first lead-out unit and the second lead-out unit that are arranged adjacent to each other in the first direction. In this embodiment, the isolation member increases the creepage distance between the connection terminals of two terminals for externally connecting the circuit at the corresponding position, thereby improving the reliability of the relay performance.

[0034] On the other hand, the present application provides a power distribution device including the relay as described above.

[0035] On yet another aspect, the present application provides a vehicle including the power distribution device as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic internal structure diagram of a relay in an embodiment of the present application.

[0037] Figure 2 is Figure 1 an exploded structural schematic diagram of a partial structure of the relay shown.

[0038] Figure 3 is Figure 2 a bottom view of a partial structure of the contact system of the relay shown.

[0039] Figure 4 a structural schematic diagram of a moving contact member of a contact system in a relay according to an embodiment of the present application.

[0040] Figure 5 a structural schematic diagram of an electromagnetic system and a contact system assembled into a mounting base in a relay according to an embodiment of the present application.

[0041] Figure 6 is Figure 5 a top view schematic diagram of the relay shown.

[0042] Figure 7 In a relay according to an embodiment of the present application along Figure 6 a sectional structural schematic diagram along line I-I in the middle.

[0043] Figure 8 a structural schematic diagram of a mounting base of a relay according to an embodiment of the present application.

[0044] Figure 9 is Figure 8 a structural schematic diagram of another perspective of the mounting base of the relay shown.

[0045] Figure 10 a structural schematic diagram when an electromagnetic system and a contact system are assembled into a mounting base in a relay according to another embodiment of the present application.

[0046] Figure 11 is Figure 10 a structural schematic diagram of the contact system of the relay shown.

[0047] Figure 12 is Figure 11 a top view schematic diagram of a partial structure of the relay shown.

[0048] Figure 13 is Figure 10 a structural schematic diagram of the mounting base of the relay shown

[0049] Figure 14 a structural schematic diagram of a first spacer disposed between two first static lead-out pieces in a contact system of a relay according to an embodiment of the present application.

[0050] Figure 15 is Figure 14In the contact system of the shown relay, an exploded view of the first static lead piece and the first spacer.

[0051] Figure 16 In the contact system of the relay according to an embodiment of the present application, a schematic structural view of a first spacer disposed between two second static lead pieces.

[0052] Figure 17 For Figure 16 In the contact system of the shown relay, an exploded view of the second static lead piece and the second spacer.

[0053] Figure 18 A schematic three-dimensional structural view of the relay according to another embodiment of the present application.

[0054] Figure 19 A top view schematic of the internal structure of the relay according to another embodiment of the present application.

[0055] Figure 20 A schematic three-dimensional structural view of the internal structure of the relay according to another embodiment of the present application.

[0056] Figure 21 A schematic structural view of the mounting base of the relay according to an embodiment of the present application.

[0057] Reference numerals:

[0058] 10. Contact system; 10a. Lead-out unit; 11. First static lead-out component; 12. Second static lead-out component; 111. First static lead-out piece; 111a. First bending portion; 111b. First connection terminal; 112. Second static lead-out piece; 112a. Second bending portion; 112b. Second connection terminal; 113. Third static lead-out piece; 113a. Third bending portion; 113b. Third connection terminal; 114. Fourth static lead-out piece; 114a. Fourth bending portion; 114b. Fourth connection terminal; 10a1. First external lead-out piece; 10a2. Second external lead-out piece; 10a3. Third external lead-out piece; 10a4. Fourth external lead-out piece; P1. First static lead-out piece; P2. Second static lead-out piece; P3. Third static lead-out piece; P4. Fourth static lead-out piece; P5. Fifth static lead-out piece; P6. Sixth static lead-out piece; P7. Seventh static lead-out piece; P8. Eighth static lead-out piece; D1. First terminal; D2. Second terminal; D3. Third terminal; D4. Fourth terminal; D5. Fifth terminal; D6. Sixth terminal; D7. Seventh terminal; D8. Eighth terminal; 10b. Moving contact unit; 13. Moving contact component; 13a. Moving contact piece; A. First contact piece; B. Second contact piece; 13a1. Fixed end; 13a2. Swing end; 13a3. Current diversion branch; 13a4. Gap; 13b. Static contact point; 13c. Moving contact point; 131. First moving contact component; 1311. First moving contact piece; 132. Second moving contact component; 1321. Second moving contact piece; 101. First moving contact unit; 102. Second moving contact unit; 103. First lead-out unit; 104. Second lead-out unit; 20. Electromagnetic system; 21. Coil assembly; 211. Coil winding; 22. Armature assembly; 221. First connecting arm; 222. Second connecting arm; 22a. Rotating shaft; 22b. Mounting bracket; 30. Mounting seat; 30a. First end face; 30b. Second end face; 30c. Inner wall surface; 30d. Outer wall surface; 30e. Baffle wall; 301. First mounting cavity; 3011. Second positioning buckle; 302. Second mounting cavity; 3021. Third positioning buckle; 303. Third mounting cavity; 31. Seat main body; 311. Side wall portion; 311a. First side wall; 311b. Second side wall; 311c. Third side wall; 311d. Fourth side wall; 312. Bottom wall portion; 32. First mounting plate; 33. Second mounting plate; 331. First positioning buckle; C1. First groove; C11. Inner notch of the first groove; C12. Outer notch of the first groove; C2. Second groove; C21. Inner notch of the second groove; C22. Outer notch of the second groove; C3. Third groove; C31. Inner notch of the third groove; C32. Outer notch of the third groove; C4. Fourth groove; C41. Inner notch of the fourth groove; C42. Outer notch of the fourth groove; ST. Limit matching portion; 40. Pushing mechanism; 41. First group of pushing cards; 411. First pushing card; 42. Second group of pushing cards; 421. Second pushing card; 50. First isolation piece;50a, first receiving groove; 51, first retaining wall; 52, second retaining wall; 53, third retaining wall; 60, second separator; 60a, second receiving groove; 61, fourth retaining wall; 62, fifth retaining wall; 63, sixth retaining wall; 70, third separator; 80, fourth separator; S, clamping portion; SC, clamping groove; Detailed implementation manners

[0059] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0060] In the description of the present application, it should be understood that if terms such as "top", "bottom", "inner", "outer", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0061] In addition, if terms such as "first" and "second" appear, these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0062] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0063] Combined with Figure 1 and Figure 2As shown, the present application provides a relay, including an electromagnetic system 20 and a contact system 10. Among them, the electromagnetic system 20 generates an electromagnetic force when current is applied to drive the contact system 10 to switch its on / off state, so as to achieve the conduction or disconnection of the circuit. For example, in some embodiments, the relay is adapted to a power distribution device, and the power distribution device distributes power to electrical equipment by switching the on / off state of the relay. Understandably, the power distribution device can be applied to a vehicle. For example, in some embodiments, the power distribution device of the vehicle includes a relay, and the relay is used to manage the power supply (such as a battery pack) of the vehicle to distribute power to structures such as motors or navigation modules in the vehicle.

[0064] In some embodiments, the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22. The armature assembly 22 can move based on the polarity change of the coil assembly 21. It should be noted that the armature assembly 22 can be a direct-push armature assembly 22 or a rotary armature assembly 22. Among them, the direct-push armature assembly 22 drives the contact system 10 to switch its state in a linear motion manner, and the rotary armature assembly 22 drives the contact system 10 to switch its state in a rotational or swinging manner. In the embodiments of the present application, the type of the armature assembly 22 is not limited herein.

[0065] Combined Figure 2 and Figure 3 As shown, the contact system 10 includes a lead-out unit 10a and a moving contact unit 10b arranged corresponding to each other. The lead-out unit 10a includes a first static lead-out component 11 and a second static lead-out component 12. The first static lead-out component 11 and the second static lead-out component 12 can be understood as a current input terminal group and a current output terminal group to meet the needs of current input and output to the moving contact unit 10b. It should be noted here that one moving contact unit 10b corresponds to one lead-out unit 10a, that is to say, the lead-out unit 10a and the moving contact unit 10b are arranged in a matching manner, so that the first static lead-out component 11 and the second static lead-out component 12 serve as the current input end and the current output end respectively.

[0066] The moving contact unit 10b includes a plurality of moving contact components 13. The plurality of moving contact components 13 are arranged along a first direction (such as Figure 2 the X direction in

[0067] For the sake of easy understanding, take the Figure 2 shown contact system 10 as an example. In the Figure 2 shown contact system 10, the moving contact unit 10b includes two moving contact components 13 arranged along the first direction.

[0068] For the sake of convenience of description, in some places hereinafter, the two moving contact components 13 are respectively referred to as "the first moving contact component 131" and "the second moving contact component 132". It can be understood that the number of moving contact components 13 in the moving contact unit 10b is not limited to 2. In some embodiments, the number of moving contact components 13 in the moving contact unit 10b may be 3 or more, and the number of moving contact components 13 in the moving contact unit 10b is not limited herein.

[0069] The moving contact unit 10b is configured to be able to switch between a first switch state and a second switch state. Among them, in the first switch state, multiple moving contact components 13 all disconnect the electrical path between the first static lead-out component 11 and the second static lead-out component 12; in the second switch state, multiple moving contact components 13 are connected in parallel with each other and all conduct the electrical path between the first static lead-out component 11 and the second static lead-out component 12.

[0070] For the contact system 10, the contact action and disconnection action of the moving contact component 13 are the basis for the contact system 10 to achieve switch control. Therefore, the switching of the moving contact unit 10b between the first switch state and the second switch state can also be understood as the switching of each moving contact component 13 in the moving contact unit 10b between the first switch state and the second switch state. It should be noted here that multiple moving contact components 13 jointly disconnect or jointly conduct the electrical path between the first static lead-out component 11 and the second static lead-out component 12.

[0071] It should be noted that jointly conducting and jointly disconnecting illustrate the consistency of each moving contact component 13 in realizing the switch action of conducting or disconnecting the circuit. That is to say, when the moving contact unit 10b switches from the first switch state to the second switch state, all the moving contact components 13 switch the electrical path between the first static lead-out component 11 and the second static lead-out component 12 from being disconnected to being conducted. Correspondingly, when the moving contact unit 10b switches from the second switch state to the first switch state, all the moving contact components 13 switch the electrical path between the first static lead-out component 11 and the second static lead-out component 12 from being conducted to being disconnected.

[0072] Since in the second switch state, multiple moving contact components 13 all conduct the electrical path between the first static lead-out component 11 and the second static lead-out component 12, and multiple moving contact components 13 are connected in parallel with each other, it is beneficial to reduce the contact resistance. Moreover, since multiple moving contact components 13 are arranged along the first direction, therefore, multiple moving contact components 13 are arranged in a parallel structure in the first direction to facilitate reducing the contact resistance.

[0073] In some embodiments, at least one moving contact component 13 is arranged in a plane perpendicular to the first direction and includes at least two parallel branches. For example, in some embodiments, one of the first moving contact component 131 and the second moving contact component 132 is arranged in a plane intersecting the first direction and includes at least two parallel branches. In other embodiments, both the first moving contact component 131 and the second moving contact component 132 are arranged in a plane intersecting the first direction and include at least two parallel branches.

[0074] It should be noted that in the above embodiments, setting the moving contact component 13 to be arranged with at least two parallel branches in a plane intersecting the first direction means that the moving contact component 13 forms a parallel structure through at least two parallel branches of itself, and then realizes the expansion of the parallel structure by using the plane intersecting the first direction. In this way, the relay of the embodiment of the present application realizes the setting of the parallel structure in two spatial dimensions, which can not only increase the number of parallel paths, but also avoid the parallel structure occupying too large a volume in a certain direction, resulting in an overly large volume of the relay. Therefore, the relay of the present application realizes miniaturization while taking into account the reduction of contact resistance, so as to meet the usage requirements.

[0075] It should be noted that in combination with Figure 2 and Figure 3 As shown, moving contact points 13b and static contact points 13c that are opposite to each other in the second direction are arranged in the first moving contact component 131 and the second moving contact component 132. In the second switching state, the moving contact point 13b is in electrical contact with the corresponding static contact point 13c, thereby conducting the electrical path between the first static lead-out component 11 and the second static lead-out component 12. Since the number of moving contact components 13 is increased in the embodiment of the present application, the contact system in the relay is not easily completely disconnected due to jitter. That is, the probability that all the moving contact points 13b and static contact points 13c in the relay are disconnected is greatly reduced, which is beneficial to ensuring the working stability of the relay, enabling the relay to have good shock resistance and being able to well meet the requirements of mechanical shock resistance. For some application scenarios with bumpy conditions during use (such as applications in automobiles), this relay has obvious usage advantages. In addition, under this structural setting, when the relay works in a low-temperature environment, if some parallel branches freeze and disconnect due to low temperature, the current flowing through the unfrozen parallel branches increases and generates heat, enabling the frozen parallel branches to defrost and be re-conducted. The relay has strong low-temperature anti-non-conduction ability and stronger environmental adaptability.

[0076] It should be noted that in the embodiment where the moving contact unit 10b includes a plurality of moving contact components 13, the electromagnetic system 20 is used to drive the plurality of moving contact components 13 to act synchronously, that is, to conduct or disconnect the electrical path between the first static lead-out component 11 and the second static lead-out component 12 simultaneously, so that the moving contact unit 10b switches between the first switch state and the second switch state.

[0077] In the embodiment where the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22, the plurality of moving contact components 13 can act synchronously under the drive of the armature assembly 22, and the moving contact unit 10b is switched between the first switch state and the second switch state.

[0078] In some embodiments, in the same moving contact component 13, at least one parallel branch and another parallel branch are arranged along the second direction (for example Figure 2 the Y direction in [description]), and the second direction intersects the first direction.

[0079] It should be noted here that as long as the second direction is not the same as the first direction and not the opposite direction, it can be considered that the second direction intersects the first direction.

[0080] Since at least one parallel branch and another parallel branch are arranged along the second direction, the moving contact unit 10b expands the parallel structure in both the first direction and the second direction at the same time, which is beneficial to reducing the contact resistance and avoiding the parallel structure occupying too large a volume in a certain direction, resulting in an over-large volume of the relay. Therefore, the relay of the present application realizes miniaturization while taking into account the reduction of the contact resistance, so as to meet the usage requirements.

[0081] Since the parallel branches are arranged along the second direction without crossing, each parallel branch can freely adjust its volume as needed. For example, in order to adapt to high-voltage or high-current scenarios, the volume can be appropriately increased to obtain a larger current-carrying capacity.

[0082] In the embodiment of the present application, the number of parallel branches is not limited here. The number of parallel branches in the first direction and the second direction can be set as needed so that the total contact resistance of the contact system can meet the requirements, in order to reduce heat generation and lower the temperature rise.

[0083] In some embodiments, the angle between the second direction and the first direction can be 30° to 120°, specifically, it can be 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110° or 120°. It can be understood that when the angle between the second direction and the first direction is 90°, the second direction and the first direction are two orthogonal (i.e., perpendicular to each other) directions.

[0084] In some embodiments, the second direction is perpendicular to the first direction. In this way, the parallel branches can be arranged in two mutually perpendicular dimensions. In this structure, it is beneficial for the moving contact assembly 13 to improve the utilization rate of the assembly space in the relay, so that the overall shape of the relay can be made more square (for example, except for the necessary lead-out end part structure, the overall appearance of the relay can be a cube), achieving miniaturization.

[0085] Combined with Figure 3 As shown, at least one moving contact assembly 13 (such as the second moving contact assembly 132) includes two moving contacts 13a.

[0086] In some embodiments, each moving contact assembly 13 includes two moving contacts 13a. For example, both the first moving contact assembly 131 and the second moving contact assembly 132 include two moving contacts 13a. The two moving contacts 13a of the same moving contact assembly 13 can be brought into contact with each other or separated from each other under the drive of the armature assembly 22. Among them, when the two moving contacts 13a are in contact with each other, they both form a parallel branch and conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12. When the two moving contacts 13a are separated from each other, the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12 is disconnected. In this embodiment, the two moving contacts 13a are used to contact each other to form a parallel branch to conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, thereby reducing the contact resistance.

[0087] It should be noted that in the same moving contact assembly 13, the two moving contacts 13a are arranged in the second direction perpendicular to the first direction.

[0088] In some embodiments, the length direction of the moving contact 13a is parallel to the third direction (such as Figure 2 the Z direction in). Assuming that both the second direction and the third direction are perpendicular to the first direction, the two moving contacts 13a of the moving contact assembly 13 are arranged in the same plane parallel to both the second direction and the third direction. In this way, when the two moving contacts 13a are in contact with each other to form a parallel structure, each moving contact 13a can form a parallel branch. Therefore, the two moving contacts 13a are arranged in a plane perpendicular to the first direction, which means that at least two parallel branches can be formed in this plane.

[0089] Continuing to combine Figure 2 and Figure 3 As shown, the moving contact 13a has a fixed end 13a1 and a swinging end 13a2. The fixed end 13a1 of one moving contact 13a is fixed to the first static lead-out assembly 11, and the fixed end 13a1 of the other moving contact 13a is fixed to the second static lead-out assembly 12.

[0090] Among the two moving contact pieces 13a of the same moving contact assembly 13, when the two swinging ends 13a2 are in electrical contact with the fixed ends 13a1 of another moving contact piece 13a along the second direction respectively, both of the two moving contact pieces 13a form parallel branches to conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, and then the moving contact unit 10b is switched to the second switch state.

[0091] Correspondingly, when both of the two swinging ends 13a2 move away from the fixed ends 13a1 of another moving contact piece 13a along the second direction, both of the two moving contact pieces 13a disconnect the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, and then the moving contact unit 10b is switched to the first switch state.

[0092] In this embodiment, on the one hand, the two moving contact pieces 13a are arranged along the second direction perpendicular to the first direction. On the other hand, the two moving contact pieces 13a are in contact with each other to form parallel branches to conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, so that the contact resistance can be reduced, and the parallel structure is extended in two spatial dimensions of the first direction and the second direction, which is beneficial to miniaturization. Both of the two moving contact pieces 13a adopt swinging moving springs with fixed ends 13a1 and swinging ends 13a2, which not only realizes the construction of the parallel structure with a simple structure, but also can utilize the electromagnetic force generated by each other when they conduct current to increase their contact pressure and the ability to withstand high-fault large currents, so that the relay product can be applicable to high-voltage or high-current application environments.

[0093] It should be noted that there are various possibilities for the contact or disconnection actions between the two moving contact pieces 13a in the moving contact assembly 13.

[0094] For example, as shown in Figure 3 , in some embodiments, the moving contact assembly 13 is configured such that when switching between the first switch state and the second switch state, the two moving contact pieces 13a of the moving contact assembly 13 move in opposite directions. Here, the "movement in opposite directions" and the "movement in the same direction" mentioned below are both with respect to the movement directions of the corresponding static contact points 13b (which will be specifically described below). In this embodiment, it can be regarded as whether the movement directions in the second direction are opposite or the same.

[0095] For the convenience of description, the switching actions of the moving contact assembly will be described below by taking the two moving contact pieces 13a (hereinafter referred to as "first contact piece A" and "second contact piece B" respectively) located in the second moving contact assembly 132 in Figure 2 as an example, but it does not mean that the switching actions of the moving contact assembly are limited to this.

[0096] Combined with Figure 2 and Figure 3As shown, the swinging end 13a2 of the first contact member A can contact or separate from the fixed end 13a1 of the second contact member B in a swinging manner. Correspondingly, the swinging end 13a2 of the second contact member B can contact or separate from the fixed end 13a1 of the first contact member A in a swinging manner. Figure 3 Figure 3 shows a state where the first contact member A and the second contact member B are separated from each other. At this time, since the first contact member A and the second contact member B are separated from each other, the electrical connection between the first static lead-out assembly 11 and the second static lead-out assembly 12 is disconnected (i.e., no current flows), and thus it is in the first switch state.

[0097] From Figure 3 the perspective of, during the process of switching from the first switch state to the second switch state, the swinging end 13a2 of the first contact member A swings clockwise relative to the fixed end 13a1 of the first contact member A, and finally the moving contact 13c on the swinging end 13a2 of the first contact member A contacts the static contact 13b on the fixed end 13a1 of the second contact member B; correspondingly, the swinging end 13a2 of the second contact member B also swings clockwise relative to the fixed end 13a1 of the second contact member A, and finally the moving contact 13c on the swinging end 13a2 of the second contact member B contacts the static contact 13b on the fixed end 13a1 of the first contact member A, thereby conducting the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, that is, making the moving contact assembly 13 in the second switch state.

[0098] In another embodiment, the first contact member A and the second contact member B are not limited to being arranged along the second direction. For example, by adjusting the positions or structures of the first contact member A and the second contact member B, the two moving contact members 13a move in the same direction to achieve the switching between the first switch state and the second switch state. That is, the moving contact assembly 13 is configured such that when switching from the first switch state to the second switch state, the swinging ends 13a2 of the two moving contact members 13a of the moving contact assembly 13 move in the same direction; and when switching from the second switch state to the first switch state, the swinging ends 13a2 of the two moving contact members 13a of the moving contact assembly 13 also move in the same direction. The structural arrangement between the two moving contact members 13a of the moving contact assembly 13 is not limited herein.

[0099] In some embodiments, the first static lead-out component 11 and the second static lead-out component 12 are respectively disposed on both sides of the moving contact unit 10b along the third direction. The moving contact component 13 has a moving direction, and the moving direction of the moving contact component 13 can be understood as the direction parallel to the tangent direction corresponding to the swinging end 13a2 of the moving contact 13a in the undeformed natural state, or can also be understood as the direction of the normal at the contact position of the static contact 13b corresponding to the swinging end 13a2. In this embodiment, the moving direction of the moving contact component 13 is parallel to the second direction. That is to say, when the moving contact component 13 switches from the first switch state to the second switch state, at the moment when the moving contact 13a in the natural state is deformed, the moving direction of the swinging end 13a2 is parallel to the second direction.

[0100] The first direction, the second direction, and the third direction are perpendicular to each other pairwise. Under this structural arrangement, the moving contacts 13a in the moving contact unit 10b are arranged compactly to reduce space waste, which is beneficial to achieving miniaturization.

[0101] Since the moving direction of the moving contact component 13 is parallel to the second direction, in this way, in the second direction, the moving contact component 13 can obtain sufficient moving space to meet the contact action requirements, without the need to provide the moving space for the contact action of the moving contact component 13 in the first direction. For the arrangement of the moving contact components 13 along the first direction, this structural setting reasonably utilizes the space in the first direction and the second direction, avoiding the size of the relay in a certain direction (the first direction or the second direction) being too large and being unfavorable for the miniaturization design.

[0102] In some embodiments, when the electromagnetic system 20 and the moving contact unit 10b are arranged along the second direction, setting the moving direction of the moving contact component 13 to be parallel to the second direction can make the arrangement direction of the electromagnetic system 20 and the moving contact unit 10b consistent with the moving direction of the moving contact component 13. Since it is easy to realize the movement of the armature component 22 in the electromagnetic system 20 along the second direction to output power, compared with the situation where the moving direction of the moving contact component 13 is designed to be other directions, the embodiment of the present application does not need to design a complex movement direction conversion mechanism, making the overall structure of the relay simpler and beneficial to reducing the volume.

[0103] Continue to combine Figure 3As shown, the fixed end 13a1 of the movable contact piece 13a is provided with a static contact point 13b, and the swinging end 13a2 of the movable contact piece 13a is provided with a movable contact point 13c. The static contact point 13b and the movable contact point 13c of one of the movable contact pieces 13a respectively correspond to the movable contact point 13c and the static contact point 13b of the other movable contact piece 13a. Among the two movable contact pieces 13a of the same movable contact assembly 13, the two movable contact points 13c can be driven by the corresponding swinging ends 13a2 to contact or separate from the corresponding static contact points 13b. In this way, the contact reliability between the two movable contact pieces 13a can be improved by using the movable contact point 13c and the static contact point 13b.

[0104] It should be noted that the static contact point 13b and the movable contact point 13c can be directly provided on the movable contact piece 13a, or indirectly connected to the movable contact piece 13a. Taking the static contact point 13b as an example, whether the static contact point 13b is directly provided on the fixed end 13a1 of the movable contact piece 13a or indirectly connected to the fixed end 13a1 of the movable contact piece 13a, it can be understood that the fixed end 13a1 of the movable contact piece 13a is provided with the static contact point 13b. For example, in some embodiments, the fixed end 13a1 of the movable contact piece 13a is connected to the first static lead-out assembly 11, and the first static lead-out assembly 11 is connected with the static contact point 13b, which can be understood that the fixed end 13a1 of the movable contact piece 13a is provided with the static contact point 13b.

[0105] Combined with Figure 2 and Figure 4 As shown, in some embodiments, in at least one movable contact assembly 13, both of the two movable contact pieces 13a include a plurality of diversion branches 13a3, and the diversion branches 13a3 on the two movable contact pieces 13a correspond to each other one by one. The plurality of diversion branches 13a3 are arranged in the first direction, and are configured to be connected in parallel when the first static lead-out assembly 11 and the second static lead-out assembly 12 are electrically conducted, and are respectively connected in parallel with each of the diversion branches 13a3 on the other movable contact piece 13a. That is to say, since the arrangement direction of the plurality of diversion branches 13a3 and the arrangement direction of the plurality of movable contact assemblies 13 are both the first direction, with such a setting, the movable contact unit 10b can not only use the plurality of movable contact assemblies 13 to expand the parallel branches in the first direction, but also use the plurality of diversion branches 13a3 to expand the parallel branches inside the movable contact assembly 13 in the first direction, which is beneficial to reducing the contact resistance.

[0106] It should be noted that the diversion branch 13a3 can extend from the fixed end 13a1 of the movable contact piece 13a to the swinging end 13a2, or be a part of the structure between the fixed end 13a1 and the swinging end 13a2 of the movable contact piece 13a.

[0107] Continuing to combine with Figure 4As shown, the moving contact 13a is an integral structural member, and the moving contact 13a is provided with a slit 13a4, and the slit 13a4 divides the moving contact 13a into a plurality of diversion branches 13a3. The structure of dividing the moving contact 13a into a plurality of diversion branches 13a3 through the slit 13a4 is simple and easy to implement.

[0108] The number of the diversion branches 13a3 can be two or more, and the number of the diversion branches 13a3 is not limited herein.

[0109] It should be noted that the slit 13a4 can extend from the fixed end 13a1 to the swing end 13a2, that is, the slit 13a4 divides the swing end 13a2 of the moving contact 13a into a plurality of sub-parts. At this time, the diversion branches 13a3 extend from the fixed end 13a1 to the swing end 13a2 of the moving contact 13a, and then the plurality of diversion branches 13a3 divided by the slit 13a4 each have a corresponding swing end 13a2. Therefore, the swing ends 13a2 of the respective diversion branches 13a3 are separated from each other, and are connected as a whole relative to the swing end 13a2 of the moving contact 13a. This separation of the swing ends 13a2 of the respective diversion branches 13a3 is beneficial to reducing the driving force when driving the swing end 13a2 to swing, and making the switching action of the moving contact assembly 13 between the first switch state and the second switch state more flexible and reliable.

[0110] In addition, each of the diversion branches 13a3 has a certain degree of independence, so that the restraint force generated between the respective diversion branches 13a3 when swinging is small, and thus it is possible to avoid leaving their corresponding stationary contacts 13c simultaneously due to vibration. In this way, this moving contact 13a is further beneficial to reducing the probability that all the moving contacts 13b are disconnected from the corresponding stationary contacts 13c due to vibration, and improving the shock resistance of the relay.

[0111] The slit 13a4 can also divide a part of the structure of the moving contact 13a located between the fixed end 13a1 and the swing end 13a2, that is, the slit 13a4 does not extend to the swing end 13a2. In this way, each of the diversion branches 13a3 forms a plurality of parallel branches arranged in the first direction in the moving contact 13a between the fixed end 13a1 and the swing end 13a2. Thus, the swing end 13a2 and the fixed end 13a1 of the moving contact 13a are electrically conducted through a plurality of parallel diversion branches 13a3. In this way, when the moving contact assembly 13 is in the second switch state, two moving contact assemblies 13 are arranged in parallel, two moving contacts 13a in the moving contact assembly 13 are arranged in parallel, and a plurality of diversion branches 13a3 in the moving contact 13a are arranged in parallel. In this way, the parallel structure in the moving contact unit 10b is expanded in multiple directions by using these parallel arrangements, so as to facilitate reducing the contact resistance.

[0112] Such as Figure 4As shown, the number of diversion branches 13a3 on each moving contact piece 13a is three, so that the moving contact piece 13a can form three parallel branches by means of the three diversion branches 13a3. By setting the number of diversion branches on each moving contact piece 13a to three, the requirement of ultra-low contact resistance can be met, redundant design can be avoided, and the structural complexity can be reduced.

[0113] For the moving contact assembly 13, if the two moving contact pieces 13a of the moving contact assembly 13 are each provided with three diversion branches 13a3, when the moving contact assembly 13 is in the second switching state, six parallel branches will be formed in the moving contact assembly 13. Correspondingly, if the moving contact unit 10b includes two moving contact assemblies 13, the moving contact unit 10b includes twelve parallel branches, which is beneficial to reducing the total contact resistance so as to meet the requirement of ultra-low contact resistance. For example, in some embodiments, when the moving contact unit 10b is in the second switching state, the total contact resistance is less than 0.05 mΩ.

[0114] For example, in combination with Figure 4 As shown, a static contact 13b is provided corresponding to each diversion branch 13a3 at the fixed end 13a1 of the moving contact piece 13a, and a moving contact 13c is provided at the corresponding swinging end 13a2 of each diversion branch 13a3.

[0115] To further illustrate the structure of the contact system 10, the structure of the relay will be described below by taking the moving contact unit 10b including two moving contact assemblies 13 as an example, but it does not mean that in the contact system 10 of the relay, the number and arrangement manner of the moving contact assemblies 13 are limited thereto.

[0116] Refer to again Figure 2 As shown, the moving contact unit 10b includes two moving contact assemblies 13, namely a first moving contact assembly 131 and a second moving contact assembly 132. The number of moving contact pieces 13a in each moving contact assembly 13 and the number of diversion branches 13a3 in the moving contact pieces 13a may be equal or unequal, and the specific shapes or sizes of the moving contact pieces 13a may also be different. No specific limitation is made here, as long as the first moving contact assembly 131 and the second moving contact assembly 132 as a whole conform to the foregoing description of the moving contact assembly 13.

[0117] In combination with Figure 2 and Figure 3 As shown, for the sake of convenient description, the moving contact piece 13a in the first moving contact assembly 131 is named "the first moving contact piece 1311", and the moving contact piece 13a in the second moving contact assembly 132 is named "the second moving contact piece 1321".

[0118] One of the first movable contact members 1311 and one of the second movable contact members 1321 are arranged along the first direction, and the other first movable contact member 1311 and the other second movable contact member 1321 are arranged along the first direction. With this structural arrangement, each of the first movable contact members 1311 and each of the second movable contact members 1321 are neatly arranged in the first direction and the second direction, which is beneficial to improving the layout compactness between the structural members, reducing the waste of the layout space, so as to reduce the occupied space of the movable contact unit 10b in the relay, and thus is beneficial to realizing the miniaturization of the relay.

[0119] The structure of the first movable contact member 1311 may be the same as or different from the structure of the second movable contact member 1321. For the structures of the first movable contact member 1311 and the second movable contact member 1321, reference may be made to the above description of the movable contact member 13a, and details will not be repeated here. For example, in an embodiment where the movable contact member 13a includes a plurality of diversion branches 13a3, for the first movable contact assembly 131 and the second movable contact assembly 132, the corresponding first movable contact member 1311 and the second movable contact member 1321 may also adopt such a structural arrangement including a plurality of diversion branches 13a3.

[0120] In some embodiments, both the first movable contact member 1311 and the second movable contact member 1321 include a plurality of diversion branches 13a3, and the number of the diversion branches 13a3 on the first movable contact member 1311 and the second movable contact member 1321 is equal and arranged in one-to-one correspondence.

[0121] For the convenience of description, the diversion branch 13a3 in the first movable contact member 1311 is referred to as the "first diversion branch", and the diversion branch 13a3 in the second movable contact member 1321 is referred to as the "second diversion branch".

[0122] The number of the first diversion branches may be two or more, and the number of the second diversion branches may be two or more. The number of the first diversion branches and the number of the second diversion branches are not limited herein.

[0123] For the convenience of understanding, hereinafter, taking Figure 1 and Figure 2 the contact system 10 of the relay shown as an example. Figure 2 In the contact system 10 shown in, both of the two first movable contact members 1311 of the first movable contact assembly 131 include three first diversion branches. When the two first movable contact members 1311 of the first movable contact assembly 131 are in contact with each other, the first movable contact assembly 131 includes six first diversion branches. Thus, when the first movable contact assembly 131 is in the second switch state, there are six branches connected in parallel to each other in the first movable contact assembly 131.

[0124] Accordingly, each of the two second movable contact members 1321 of the second movable contact assembly 132 includes three second current guiding branches. When the two second movable contact members 1321 of the second movable contact assembly 132 are in contact with each other, the second movable contact assembly 132 includes six second current guiding branches. Thus, when the second movable contact assembly 132 is in the second switch state, there are six branches in parallel with each other in the second movable contact assembly 132.

[0125] Since in the movable contact unit 10b, the first movable contact assembly 131 and the second movable contact assembly 132 can jointly switch between the first switch state and the second switch state. In the second switch state, the first movable contact assembly 131 and the second movable contact assembly 132 jointly conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12. The six first current guiding branches in the first movable contact assembly 131 will be in parallel with the six second current guiding branches in the second movable contact assembly 132, so that there are twelve parallel branches between the first static lead-out assembly 11 and the second static lead-out assembly 12, which can greatly reduce the total resistance and meet the requirement of ultra-low contact resistance (such as less than 0.05 mΩ).

[0126] Combined with Figures 5 to 7 As shown, the relay further includes a mounting base 30. The movable contact assembly 13 (such as the first movable contact assembly 131 and the second movable contact assembly 132) and the electromagnetic system 20 are both installed in the mounting base 30.

[0127] The mounting base 30 includes a first mounting cavity 301 and a second mounting cavity 302 arranged along the first direction. The first mounting cavity 301 has a first mounting opening, and the second mounting cavity 302 has a second mounting opening. The first mounting opening and the second mounting opening are located at both ends of the mounting base 30 in the first direction. The first movable contact assembly 131 can be installed into the first mounting cavity 301 from the first mounting opening, and the second movable contact assembly 132 can be installed into the second mounting cavity 302 from the second mounting opening.

[0128] With this structural arrangement, since the first mounting opening and the second mounting opening are located at both ends of the mounting base 30 in the first direction, and the first movable contact assembly 131 and the second movable contact assembly 132 are respectively installed into the mounting base 30 from the first mounting opening and the second mounting opening, the installation convenience is improved.

[0129] In the embodiment of the present application, since the first moving contact assembly 131 and the second moving contact assembly 132 are respectively installed into the mounting base 30 from the first mounting opening and the second mounting opening, therefore, the advantage of arranging the moving contact unit 10b as the first moving contact assembly 131 and the second moving contact assembly 132 along the first direction is also that the first moving contact assembly 131 and the second moving contact assembly 132 are arranged in layers within the mounting base 30. In this way, the side wall of the mounting base 30 only needs to be provided with independent grooves at positions corresponding to the first moving contact assembly 131 and the second moving contact assembly 132 to meet the requirement of leading out the corresponding static lead-out pieces from the mounting base 30. This method of independently grooving for the moving contact assemblies is beneficial to reducing the grooving depth of the side wall of the mounting base 30, thereby maintaining the structural strength of the side wall of the mounting base 30. Specifically, since the two groups of moving contact assemblies 13 are arranged in layers, the static lead-out assembly is also arranged in two parts in the first direction. Therefore, the two positions of the mounting base 30 corresponding to the two parts of the static lead-out assembly can be independently grooved, so as to avoid the situation that at least one side of the side wall of the mounting base 30 becomes an isolated and unsupported structure due to over-deep grooving. Subsequently, the overall structural strength of the mounting base 30 is prevented from being affected, and the use reliability of the relay is improved.

[0130] In the conventional technology, the moving contact unit and the lead-out unit usually need to be installed in the relay housing. Among them, the relay housing is provided with an opening, and the first static lead-out assembly and the second static lead-out assembly in the lead-out unit usually enter the relay housing from the opening and penetrate through the side wall of the relay housing. On this basis, if all the moving contact assemblies and the lead-out unit are placed into the relay housing along the same opening, then, the relay housing needs to be provided with grooves with a relatively large depth for all the first static lead-out assemblies and the second static lead-out assemblies to penetrate, resulting in a significant reduction in the strength of the side wall of the relay housing. The side wall of the relay housing is prone to bending, and may affect the contact assembly accuracy and the overall structural strength and stability of the relay.

[0131] Both the first static lead-out assembly 11 and the second static lead-out assembly 12 include a plurality of static lead-out pieces arranged along the first direction. Each static lead-out piece in the first static lead-out assembly 11 and each static lead-out piece in the second static lead-out assembly 12 respectively correspond to each moving contact assembly 13 one by one. Each moving contact assembly 13 can conduct or disconnect the electrical path between the corresponding two static lead-out pieces. In this embodiment, by arranging the first static lead-out assembly 11 and the second static lead-out assembly 12 to include a plurality of static lead-out pieces arranged along the first direction, the current input or current output requirements of the corresponding moving contact assemblies 13 are met. Moreover, the plurality of static lead-out pieces in the same static lead-out assembly are arranged along the first direction, and then the consistency with the arrangement direction of the plurality of moving contact assemblies 13 is maintained, which is beneficial to improving the utilization rate of the structural space of the relay and reducing the volume.

[0132] In some embodiments proposed in the present application, since the number of moving contact components is two, two independent chambers are respectively provided in the relay housing to accommodate the two groups of moving contact components respectively, and a basis is provided for setting the lead-out unit into two groups. A groove for the lead-out unit to penetrate can be correspondingly provided in each chamber, so that the depth of the groove on the side wall of the relay housing is reduced to half or even more of the original, thereby effectively improving the bending strength of the side wall of the relay housing. In addition, it is also beneficial to configure more sufficient mounting structures in the independent chambers (such as the first mounting chamber 301 and the second mounting chamber 302) to fix and support the two groups of moving contact components respectively, improve the stability of the moving contact components, and achieve physical isolation and independent stress bearing.

[0133] The following will be described in conjunction with Figure 2 the structures of the first static lead-out component 11 and the second static lead-out component 12 in the relay shown in the figure. In conjunction with Figure 2 As shown, the first static lead-out component 11 includes two static lead-out pieces arranged along the first direction, namely the first static lead-out piece 111 and the third static lead-out piece 113. The second static lead-out component 12 includes two static lead-out pieces arranged along the first direction, namely the second static lead-out piece 112 and the fourth static lead-out piece 114.

[0134] In the first switching state, the first moving contact component 131 disconnects the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112, and the second moving contact component 132 disconnects the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114; in the second switching state, the first moving contact component 131 conducts the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112, and the second moving contact component 132 conducts the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114.

[0135] It should be noted that the first static lead-out piece 111, the third static lead-out piece 113, the second static lead-out piece 112, and the fourth static lead-out piece 114 can satisfy the electrical connection of the corresponding moving contact component 13 to the circuit outside the relay. Since both the first static lead-out component 11 and the second static lead-out component 12 are divided into two groups, a basis is further provided for setting independent chambers on the relay housing to improve the bending strength of the side wall of the relay housing.

[0136] The two moving contact members 13a of the first moving contact assembly 131 are respectively connected to the first static lead-out piece 111 and the second static lead-out piece 112, and the two moving contact members 13a of the second moving contact assembly 132 are respectively connected to the third static lead-out piece 113 and the fourth static lead-out piece 114; in any one of the first moving contact assembly 131 and the second moving contact assembly 132, at least one of the two moving contact members 13a can move under the drive of the electromagnetic system 20 to contact or separate from the other. In the first switch state, the two moving contact members 13a of the first moving contact assembly 131 are separated from each other, and the two moving contact members 13a of the second moving contact assembly 132 are separated from each other. In the second switch state, the two moving contact members 13a of the first moving contact assembly 131 are in contact with each other, and the two moving contact members 13a of the second moving contact assembly 132 are in contact with each other.

[0137] Further, the fixed ends 13a1 of the two moving contact members 13a of the first moving contact assembly 131 are respectively fixed to the first static lead-out piece 111 and the second static lead-out piece 112. The fixed ends 13a1 of the two moving contact members 13a of the second moving contact assembly 132 are respectively fixed to the third static lead-out piece 113 and the fourth static lead-out piece 114. All the swinging ends 13a2 can correspondingly contact or separate from the fixed end 13a1 of another moving contact member 13a located in the same moving contact assembly 13 under the drive of the electromagnetic system 20. Thus, in the first switch state, the two moving contact members 13a of the first moving contact assembly 131 are separated from each other, thereby disconnecting the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112, and the two moving contact members 13a of the second moving contact assembly 132 are separated from each other, thereby disconnecting the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114. Correspondingly, in the second switch state, the two moving contact members 13a of the first moving contact assembly 131 are in contact with each other, thereby conducting the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112, and the two moving contact members 13a of the second moving contact assembly 132 are in contact with each other, thereby conducting the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114. In this way, the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12 can be jointly disconnected or jointly conducted by the first moving contact assembly 131 and the second moving contact assembly 132, realizing the switching between the first switch state and the second switch state.

[0138] It should be noted that for each moving contact component 13, it is not limited to including two moving contact pieces 13a. In some embodiments, the moving contact component 13 may also have only one moving contact piece 13a. Taking the first moving contact component 131 as an example, the first moving contact component 131 includes one moving contact piece 13a. One end of the moving contact piece 13a is fixed to one of the first static lead-out piece 111 and the second static lead-out piece 112, and the other end can move to contact or separate from the other of the first static lead-out piece 111 and the second static lead-out piece 112, so that the first moving contact component 131 can disconnect or conduct the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112. Correspondingly, the second moving contact component 132 can also adopt a similar setting method as the first moving contact component 131 to disconnect or conduct the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114, which will not be elaborated here.

[0139] It can be understood that when the moving contact unit 10b includes multiple groups of moving contact components 13, for example, when the number of moving contact components 13 is 2 or more, regardless of whether the number of moving contact pieces 13a in the moving contact component 13 is 1 or 2, the moving contact unit 10b can be configured to be able to switch between the first switch state and the second switch state. Taking the first moving contact component 131 and the second moving contact component 132 as an example, in the first switch state, the first moving contact component 131 disconnects the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112, and the second moving contact component 132 disconnects the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114; in the second switch state, the first moving contact component 131 conducts the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112, and the second moving contact component 132 conducts the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114.

[0140] It should be noted that both the first static lead-out piece 111 and the second static lead-out piece 112 extend from the cavity wall of the first installation cavity 301; both the third static lead-out piece 113 and the fourth static lead-out piece 114 extend on the cavity wall of the second installation cavity 302 to meet the requirements of external connection circuits.

[0141] Continue Figure 8 and Figure 9 As shown, in some embodiments, the side wall of the mounting base 30 is provided with grooves for each static lead-out member to extend out. For example, the mounting base 30 is provided with a first groove C1, a second groove C2, a third groove C3, and a fourth groove C4. The first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 are respectively inserted through the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4 to expose the connection terminals outside the mounting base 30.

[0142] As Figure 8As shown, the first groove C1 and the second groove C2 are located on opposite side walls of the first mounting cavity 301 in the third direction (e.g., Figure 8 the Z direction in

[0143] ), and both extend along the first direction to one end of the seat body 31 where the first mounting opening is provided (i.e., the end where the first end face 30a of the mounting seat 30 is located). The third groove C3 and the fourth groove C4 are located on opposite side walls of the second mounting cavity 302 in the third direction, and both extend along the first direction to one end of the seat body 31 where the second mounting opening is provided (i.e., the end where the second end face 30b of the mounting seat 30 is located).

[0144] Combined Figure 8 with Figure 9 As shown, both the first groove C1 and the second groove C2 extend along the first direction to one end of the seat body 31 where the first mounting opening is provided, so that the first static lead-out piece 111 and the second static lead-out piece 112 can be correspondingly assembled into the first groove C1 and the second groove C2 along the first direction. Then, when the first moving contact assembly 131 is installed into the first mounting cavity 301 from the first mounting opening along the first direction, the first static lead-out piece 111 and the second static lead-out piece 112 connected to the first moving contact assembly 131 can be assembled into the seat body 31 together with the first moving contact assembly 131.

[0145] Correspondingly, since both the third groove C3 and the fourth groove C4 extend along the first direction to one end of the seat body 31 where the second mounting opening is provided, the third static lead-out piece 113 and the fourth static lead-out piece 114 can be correspondingly assembled into the third groove C3 and the fourth groove C4 along the first direction. Then, when the second moving contact assembly 132 is installed into the second mounting cavity 302 from the second mounting opening along the first direction, the third static lead-out piece 113 and the fourth static lead-out piece 114 connected to the second moving contact assembly 132 can be assembled into the seat body 31 together with the second moving contact assembly 132.

[0146] In the above embodiments, since each moving contact assembly 13 in the contact system 10 can be assembled into the mounting seat 30 together with the corresponding static lead-out piece, the assembly operation of the contact system 10 in the mounting seat 30 is simplified, making the assembly of the relay more convenient.

[0147] It should be noted that in the embodiment where each moving contact component 13 includes two moving contact pieces 13a. Taking the first moving contact component 131 including two first moving contact pieces 1311 and the second moving contact component 132 including two second moving contact pieces 1321 as an example. The first static lead-out piece 111 is connected to one of the first moving contact pieces 1311, and the second static lead-out piece 112 is connected to the other first moving contact piece 1311. The third static lead-out piece 113 is connected to one of the second moving contact pieces 1321, and the fourth static lead-out piece 114 is connected to the other second moving contact piece 1321. Through this structural arrangement, it is convenient to use the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 to meet the need of electrically connecting the corresponding moving contact piece 13a to the circuit outside the relay.

[0148] In addition, setting the first static lead-out component 11 to include the first static lead-out piece 111 and the third static lead-out piece 113 arranged along the first direction can enable the first static lead-out piece 111 and the third static lead-out piece 113 to be independently installed in the corresponding first groove C1 and third groove C3. Compared with the case where the first static lead-out piece 111 and the third static lead-out piece 113 are integrally arranged and a deeper groove needs to be opened in the mounting base 30, this embodiment can maintain the structural strength of the mounting base 30.

[0149] Correspondingly, setting the second static lead-out component 12 to include the second static lead-out piece 112 and the fourth static lead-out piece 114 arranged along the first direction can enable the second static lead-out piece 112 and the fourth static lead-out piece 114 to be independently installed in the corresponding second groove C2 and fourth groove C4. Compared with the case where the second static lead-out piece 112 and the fourth static lead-out piece 114 are integrally arranged and a deeper groove needs to be opened in the mounting base 30, this embodiment can maintain the structural strength of the mounting base 30.

[0150] In the above embodiment, corresponding grooves are opened at both ends of the seat body 31 to set the static lead-out pieces. In this way, the depth of the groove in the first direction only needs to adapt to the assembly requirement of the corresponding static lead-out piece, and then the grooving depth of the groove in the first direction can be made as small as possible to maintain the structural strength of the seat body 31.

[0151] For the sake of easy understanding, the effect of the structural arrangement of this relay of the present application will be further described below in combination with the installation structure of the contact system 10 in the related art, but it does not mean that the effect of the structural arrangement of the relay of the present application is limited thereto.

[0152] For example, in the related art, to meet the requirement of reducing contact resistance, the moving contact 13a is usually configured to include multiple parallel branches. Taking the example where each moving contact 13a includes six parallel branches, or two moving contacts 13a arranged in the first direction each include three parallel branches, with a total of six parallel branches, in the related art, the six parallel branches achieve current output or input through the same static lead-out piece. Assuming that the size of the static lead-out piece in the first direction is d to adapt to the need for current flow, in the related art, if the relay mounting base 30 is only provided with one mounting cavity for installing the contact system, then the relay mounting base 30 needs to open a groove with a depth not less than d on the cavity wall of the mounting cavity to adapt to the installation need of the static lead-out piece.

[0153] In the embodiment of the present application, since the first moving contact assembly 131 and the second moving contact assembly 132 are arranged in the first direction and are connected in parallel with each other. The first static lead-out piece 111 and the third static lead-out piece 113 are both connected to a load terminal in the circuit to which the relay is applied, and the third static lead-out piece 113 and the fourth static lead-out piece 114 are both connected to another load terminal in the circuit to which the relay is applied. Based on this, in the relay of the embodiment of the present application, if six parallel branches are realized by using the first moving contact 1311 and the second moving contact 1321, the first static lead-out piece 111 connected to the first moving contact 1311 only needs to adapt to the current transmission need of the first moving contact 1311, and the third static lead-out piece 113 connected to the second moving contact 1321 only needs to adapt to the current transmission need of the second moving contact 1321. In this way, the first static lead-out piece 111 and the third static lead-out piece 113 respectively bear a part of the current of the six parallel branches. Compared with the related art where the same static lead-out piece needs to bear the current of the six parallel branches, in the relay of the present application, the size of the first static lead-out piece 111 can be made smaller than d, and the size of the third static lead-out piece 113 is smaller than d.

[0154] Ideally, if the current guiding capabilities of the parallel branches of the present application and those of the related art are the same, the total current flowing through the first static lead-out piece 111 and the third static lead-out piece 113 is the same as the current flowing through one static lead-out piece in the related art. Correspondingly, in the first direction, the sum of the sizes of the first static lead-out piece 111 and the third static lead-out piece 113 will also be the same as the size d of one static lead-out piece in the related art. Thus, when the relay of the present application maintains the same contact resistance and current-carrying performance as the relay of the related art, the sizes of both the first static lead-out piece 111 and the third static lead-out piece 113 are smaller than d. Understandably, if the current flowing through the first moving contact 1311 and the second moving contact 1321 is the same, the currents that the first static lead-out piece 111 and the third static lead-out piece 113 need to share are also the same. At this time, the sizes of the first static lead-out piece 111 and the third static lead-out piece 113 in the first direction can be equal, that is, in the first direction, the sizes of both the first static lead-out piece 111 and the third static lead-out piece 113 are d / 2. Thus, the depth of the first groove C1 only needs to be d / 2 to meet the assembly requirements of the first static lead-out piece 111; correspondingly, the depth of the third groove C3 only needs to be d / 2 to meet the assembly requirements of the third static lead-out piece 113. It can be seen that for the relay of the present application, by arranging the moving contact unit 10b as a plurality of moving contact components 13 arranged along the first direction, it is possible to reduce the size requirements of each static lead-out piece in the first direction in the lead-out unit 10a, thereby reducing the depth of the slot on the mounting base 30, and avoiding the situation where at least one side of the side wall (such as Figure 5 the side wall where the outer wall surface 30d of the mounting base 30 in

[0155] is located) for installing one of the static lead-out pieces will become an isolated and unsupported structure. Therefore, the embodiment of the present application is beneficial to maintaining the overall structural strength of the mounting base 30 and improving the use reliability of the relay.

[0156] For the sake of easy understanding, hereinafter, the depth of each groove corresponding to the inner wall of the seat body 31 is referred to as the "slot depth", that is, the depth of the notch where each groove communicates with the corresponding installation cavity is referred to as the "slot depth".

[0157] For example, as shown in combination with Figure 8 and Figure 9 , the depth of the third groove C3 corresponding to the inner wall of the base body 31 is d / 2, so the grooving depth of the third groove C3 is d / 2. The grooving depth of the third groove C3 here only refers to the depth corresponding to the inner wall of the base body 31, and does not mean that the depth of the third groove C3 at other positions of the base body 31 is d / 2. As shown in Figure 8 and Figure 9 , the dimension of the third groove C3 extending to the position of the outer wall surface 30d of the base body 31 (i.e., the position where the third static lead-out piece 113 passes through the outer wall of the base body 31) can be D, and D is greater than or equal to d / 2.

[0158] As shown in combination with Figure 8 and Figure 9 , for the first groove C1, the second groove C2 and the fourth groove C4, their grooving depths only need to meet the installation requirements of the corresponding static lead-out pieces, and will not be elaborated one by one here.

[0159] In some embodiments, the depth of the second groove C2 corresponding to the inner wall surface 30c of the first installation cavity 301 is equal to the depth corresponding to the outer wall surface 30d of the base body 31.

[0160] The depth of the fourth groove C4 corresponding to the inner wall of the base body 31 is equal to the depth corresponding to the outer wall of the base body 31.

[0161] In some embodiments, the grooving depth of the first groove C1 is less than or equal to 1 / 3 of the depth of the first installation cavity 301. By providing the first groove C1 to meet the need for the first static lead-out piece 111 to be led out from the mounting base 30, at the same time, by controlling the grooving depth of the first groove C1, the depth of the first groove C1 is shallow, which is beneficial to maintaining the structural strength of the mounting base 30, making the mounting base 30 not easily deformed, thereby enhancing the reliability of the relay.

[0162] The dimension of the part of the first static lead-out piece 111 cooperating with the first groove C1 in the first direction is less than the dimension of the other parts of the first static lead-out piece 111 (such as the connection terminal of the first static lead-out piece 111, or the part of the first static lead-out piece 111 connected to the moving contact 13a) in the first direction; in this way, on the one hand, the first groove C1 is used to meet the assembly requirements for part of the structure of the first static lead-out piece 111, and at the same time, the other parts of the first static lead-out piece 111 have a large dimension in the first direction, which is beneficial to ensuring the current-carrying area to reduce the resistance.

[0163] Correspondingly, the grooving depth of the second groove C2 is less than or equal to 1 / 3 of the depth of the first mounting cavity 301. The grooving depth of the third groove C3 is less than or equal to 1 / 3 of the depth of the second mounting cavity 302. The grooving depth of the fourth groove C4 is less than or equal to 1 / 3 of the depth of the second mounting cavity 301. Controlling the grooving depth of each groove is beneficial to maintaining the structural strength of the mounting base 30, making the mounting base 30 not easily deformed, thereby enhancing the reliability of the relay.

[0164] Similar to the first static lead-out piece 111, for other static lead-out pieces such as the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114, the dimension of the part that cooperates with the corresponding groove in the first direction is smaller than the dimension of the other parts of the static lead-out piece in the first direction. Thus, the groove with reduced grooving depth can meet the assembly requirements of the corresponding static lead-out piece. At the same time, the larger dimension of the other parts of each static lead-out piece in the first direction is beneficial to ensuring the current-carrying area to reduce the resistance.

[0165] Combined Figure 1 、 Figure 2 and Figure 5 As shown, in some embodiments, the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 all have bending parts. The first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 lead out connection terminals along the second direction to the side where the outer wall surface 30d of the mounting base 30 is located through their respective bending parts.

[0166] For ease of description, the bending parts in the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 are correspondingly referred to as "the first bending part 111a", "the second bending part 112a", "the third bending part 113a", and "the fourth bending part 114a"; and the connection terminals among them are correspondingly referred to as "the first connection terminal 111b", "the second connection terminal 112b", "the third connection terminal 113b", and "the fourth connection terminal 114b".

[0167] In the first static lead-out piece 111, due to the provision of the first bending portion 111a, the first connection terminal 111b is led out toward the side where the outer wall surface 30d of the mounting base 30 is located. In the second static lead-out piece 112, due to the provision of the second bending portion 112a, the second connection terminal 112b is led out toward the side where the outer wall surface 30d of the mounting base 30 is located. In the third static lead-out piece 113, due to the provision of the third bending portion 113a, the third connection terminal 113b is led out toward the side where the outer wall surface 30d of the mounting base 30 is located. In the fourth static lead-out piece 114, due to the provision of the fourth bending portion 114a, the fourth connection terminal 114b is led out toward the side where the outer wall surface 30d of the mounting base 30 is located.

[0168] Each connection terminal is led out from the same side of the mounting base 30. Specifically, all the connection terminals are arranged in the same plane parallel to both the first direction and the third direction, so that the arrangement of the static lead-out pieces in the relay is compact, reducing the size occupation of the relay along the third direction or the first direction, which is beneficial to the miniaturization of the relay and makes it easier to adapt to a limited installation space, such as the narrow battery compartment space in an automobile; in addition, it is also beneficial to support the compact side-by-side installation of multiple relays.

[0169] Furthermore, all the connection terminals are located outside the outer wall surface 30d of the mounting base 30 that is closer to the contact system 10 in the second direction. In this way, the distance from each connection terminal to the moving contact unit 10b in the contact system 10 is small. Thus, the conductive material consumed by each static lead-out piece for leading out the connection terminal outside the mounting base 30 can be reduced, thereby reducing the cost. The conductive material here includes but is not limited to copper or copper alloy.

[0170] Combined Figure 5 、 Figure 8 and Figure 9 As shown in, two side walls of the mounting base 30 in the third direction are respectively provided with shielding walls 30e, and each shielding wall 30e correspondingly shields each bending portion. In this way, while the connection terminal maintains the connection between the relay and the external device, the corresponding bending portion can be shielded by each shielding wall 30e, thereby improving the overall aesthetic appearance of the relay.

[0171] In other possible embodiments, the first static lead-out piece 111 and the third static lead-out piece 113 may be integrated, and the second static lead-out piece 112 and the fourth static lead-out piece 114 may also be integrated, which is not limited herein.

[0172] Combined Figures 5 to 7As shown, the mounting base 30 includes a base body 31 and a first mounting plate 32. The first mounting plate 32 is connected to the inner wall of the base body 31. The first mounting plate 32 divides the inner cavity of the base body 31 into a first mounting cavity 301 and a second mounting cavity 302 along the first direction. That is to say, in the first direction, the first mounting cavity 301 is located on one side of the first mounting plate 32, and the second mounting cavity 302 is located on the other side of the first mounting plate 32. In this way, the setting of the first mounting plate 32 does not interfere with the installation of the first moving contact assembly 131 and the second moving contact assembly 132, that is, it maintains the installation convenience of the first moving contact assembly 131 and the second moving contact assembly 132 in the mounting base 30. At the same time, since the first mounting plate 32 is connected to the inner wall of the base body 31, the first mounting plate 32 can play a role in strengthening the structure of the base body 31, making the base body 31 not easily deformed. Then, even when the static contact 13b is impacted by the moving contact 13c during the contact action of the first moving contact assembly 131 and the second moving contact assembly 132, generating an impact force on the base body 31, the base body 31 can reduce the probability of deformation or damage under the strengthening action of the first mounting plate 32, making the relay not easily damaged and extending the service life of the relay.

[0173] The electromagnetic system 20 can be installed into the base body 31 from one end of the mounting base 30 along the first direction. The inner cavity of the base body 31 also has a third mounting cavity 303 that communicates with both the first mounting cavity 301 and the second mounting cavity 302. The third mounting cavity 303 has a third mounting opening, and the third mounting opening is located at one end of the mounting base 30 in the first direction. Understandably, the third mounting opening can be understood as the opening of the third mounting cavity 303 on the mounting base 30. The third mounting opening is used for installing the electromagnetic system 20 into the third mounting cavity 303.

[0174] Combined with Figure 8 and Figure 9 As shown, the mounting base 30 further includes a second mounting plate 33. The second mounting plate 33 is connected to the first mounting plate 32, and the second mounting plate 33 divides the space enclosed by the base body 31 to form the third mounting cavity 303. One end of the second mounting plate 33 in the first direction and a part of the side wall of the base body 31 enclose to form the third mounting opening.

[0175] Combined with Figure 5 and Figure 8 As shown, in the second direction, both the first mounting cavity 301 and the second mounting cavity 302 are located on one side of the second mounting plate 33, and the third mounting cavity 303 is located on the other side of the second mounting plate 33. The electromagnetic system 20 can be installed into the third mounting cavity 303 along the first direction.

[0176] It can be understood that in the embodiment where the electromagnetic system 20 includes the coil assembly 21 and the armature assembly 22, both the coil assembly 21 and the armature assembly 22 can be installed into the third installation cavity 303 from the third installation opening along the first direction.

[0177] In this embodiment, the second direction is perpendicular to the first direction. Thus, the first moving contact assembly 131 and the second moving contact assembly 132 arranged along the first direction can be compactly located on one side of the second mounting plate 33, and the electromagnetic system 20 can be compactly arranged on the other side of the second mounting plate 33, which is conducive to realizing the miniaturization of the relay.

[0178] Furthermore, as shown in Figure 8 and Figure 9 , the base body 31 includes a side wall portion 311 and a bottom wall portion 312. The bottom wall portion 312 is connected to the side wall portion 311 and the second mounting plate 33. Part of the structures of the second mounting plate 33 and the side wall portion 311 jointly enclose the third installation cavity 303, and another part of the structure of the side wall portion 311, the first mounting plate 32 and the second mounting plate 33 enclose the first installation cavity 301 and the second installation cavity 302. The bottom wall portion 312 is parallel to the first mounting plate 32. One end of the electromagnetic system 20 is connected to the bottom wall portion 312, thereby improving the installation stability of the electromagnetic system 20.

[0179] It should be noted that in the embodiment where the electromagnetic system 20 includes the coil assembly 21 and the armature assembly 22, both the coil assembly 21 and the armature assembly 22 are connected to the bottom wall portion 312. Thus, the bottom wall portion 312 improves the installation stability of the coil assembly 21 and the installation stability of the armature assembly 22.

[0180] In some embodiments, the armature assembly 22 is connected with a rotating shaft 22a. One end of the rotating shaft 22a is connected to the bottom wall portion 312, and the armature assembly 22 can rotate relative to the bottom wall portion 312 around the central axis of the rotating shaft 22a. In this embodiment, the rotation of the armature assembly 22 relative to the bottom wall portion 312 around the central axis of the rotating shaft 22a is used to provide power for the contact or disconnection action of the first moving contact assembly 131 and the second moving contact assembly 132, so that the moving contact unit 10b switches between the first switch state and the second switch state. The axial direction of the rotating shaft 22a is arranged parallel to the first direction. Therefore, the armature assembly 22 can be rotatably connected to the bottom wall portion 312 through the rotating shaft 22a by being assembled into the third installation cavity 303 of the mounting base 30 along the first direction. Since the first moving contact assembly 131 is assembled into the first installation cavity 301 of the mounting base 30 along the first direction, and the second moving contact assembly 132 is assembled into the second installation cavity 302 of the mounting base 30 along the first direction, in the relay of the present application, the armature assembly 22, the first moving contact assembly 131 and the second moving contact assembly 132 can be assembled into the mounting base 30 in the same dimension (i.e., the first direction), which makes the assembly operation convenient. And under this structural layout, it is beneficial to reduce the waste of the assembly space so as to realize the miniaturization of the relay. Also, since the electromagnetic system 20 and the moving contact unit 10b are arranged along the second direction, the spaces in the first direction and the second direction are both reasonably utilized, avoiding the size of the relay in a certain direction (the first direction or the second direction) being too large and being unfavorable for the miniaturization design.

[0181] It should be noted that the second mounting plate 33 can also play a supporting role, and the supporting role here includes but is not limited to the second mounting plate 33 directly playing a supporting role. In some embodiments, the second mounting plate 33 can indirectly play a role in mounting and supporting. For example, in combination with Figure 1 、 Figure 2 and Figure 9 as shown, one end of the rotating shaft 22a is connected to the bottom wall portion 312, and the other end is connected to the mounting frame 22b. As Figure 5 and Figure 6 shown, when the mounting frame 22b is mounted on the seat body 31, the second mounting plate 33 cooperates with the mounting frame 22b, and the second mounting plate 33 can play a fixing effect on the mounting frame 22b to reduce the probability of the mounting frame 22b loosening relative to the seat body 31. Therefore, in this embodiment, the second mounting plate 33 indirectly plays a supporting role on the rotating shaft 22a through the mounting frame 22b, so that the armature assembly 22 can stably rotate around the rotating shaft 22a to improve the rotation stability of the armature assembly 22.

[0182] In some embodiments, the extending direction of the second mounting plate 33 is parallel to the first direction. In this way, for the first movable contact assembly 131 and the second movable contact assembly 132 arranged along the first direction, the second mounting plate 33 is not likely to interfere with the assembly of the first movable contact assembly 131 and the second movable contact assembly 132, so that the first movable contact assembly 131 and the second movable contact assembly 132 can be compactly mounted in the first mounting cavity 301 and the second mounting cavity 302, which is conducive to realizing the miniaturization of the relay.

[0183] It should be noted that the second mounting plate 33 can be used to position some static lead-out pieces in the lead-out unit 10a, so as to improve the mounting stability of the static lead-out pieces in the mounting seat 30. For example, the second mounting plate 33 can meet the mounting and positioning requirements of the static lead-out pieces close to the electromagnetic system 20, thereby improving the mounting stability of the static lead-out pieces.

[0184] In some embodiments, in combination Figure 5 with Figure 6 as shown, a first positioning buckle 331 is provided on the second mounting plate 33. Partial structures of the first static lead-out piece 111 and the third static lead-out piece 113 are both matched with the first positioning buckle 331. Thus, the first positioning buckle 331 is used to position the first static lead-out piece 111 and the third static lead-out piece 113 and limit them along the second direction, so that the installation of the first static lead-out piece 111 and the third static lead-out piece 113 on the mounting seat 30 is more stable and not easy to loosen, thereby improving the stability of the static contacts 13b on the first static lead-out piece 111 and the third static lead-out piece 113 and the use effect of the stable relay.

[0185] In some embodiments, a second positioning buckle 3011 is provided on the inner wall of the first mounting cavity 301 opposite to the second mounting plate 33. A partial structure of the second static lead-out piece 112 is matched with the second positioning buckle 3011. Thus, the second positioning buckle 3011 is used to position the second static lead-out piece 112 and limit it along the second direction, so that the installation of the second static lead-out piece 112 on the mounting seat 30 is more stable and not easy to loosen, thereby improving the stability of the static contacts 13b on the second static lead-out piece 112 and the use effect of the stable relay.

[0186] In combination Figure 9 as shown, a third positioning buckle 3021 is provided on the inner wall of the second mounting cavity 302 opposite to the second mounting plate 33. A partial structure of the fourth static lead-out piece 114 is matched with the third positioning buckle 3021. Thus, the third positioning buckle 3021 is used to position the fourth static lead-out piece 114 and limit it along the second direction, so that the installation of the fourth static lead-out piece 114 on the mounting seat 30 is more stable and not easy to loosen, thereby improving the stability of the static contacts 13b on the fourth static lead-out piece 114 and the use effect of the stable relay.

[0187] Refer again to Figure 1 and Figure 2 As shown, the relay further includes a pushing mechanism 40, which is disposed between the armature assembly 22 and the contact system 10. The pushing mechanism 40 is used to drive the first moving contact assembly 131 and the second moving contact assembly 132 to act synchronously under the drive of the armature assembly 22, and then cause the moving contact unit 10b to switch between the first switch state and the second switch state.

[0188] It should be noted that since the multiple moving contact assemblies 13 of the contact system 10 can be conducted or disconnected from the first static lead-out assembly 11 and the second static lead-out assembly 12 under the drive of the armature assembly 22, and the pushing mechanism 40 can play a transmission role between the armature assembly 22 and the contact system 10, therefore, the pushing of the first moving contact 1311 by the pushing mechanism 40 can satisfy the requirement of pushing the two first moving contacts 1311 of each first moving contact assembly 131 to positions where they are in contact with each other or disconnected from each other; correspondingly, the pushing of the second moving contact 1321 by the pushing mechanism 40 can satisfy the requirement of pushing the two second moving contacts 1321 of each second moving contact assembly 132 to positions where they are in contact with each other or disconnected from each other.

[0189] Combined with Figure 2 、 Figure 6 and Figure 7 As shown, the pushing mechanism 40 includes a first set of pushing cards 41 and a second set of pushing cards 42. The first set of pushing cards 41 includes two first pushing cards 411, and the second set of pushing cards 42 includes two second pushing cards 421. Among them, the two first pushing cards 411 are respectively connected to the two first moving contacts 1311 in a corresponding manner, and the two second pushing cards 421 are respectively connected to the two second moving contacts 1321 in a corresponding manner. Through this structural arrangement, the pushing mechanism 40 uses the first set of pushing cards 41 and the second set of pushing cards 42 to be separately arranged in the mounting seat 30 in the first direction, so as to avoid the situation that the size of the pushing card in the first direction is too large and prone to deformation or fracture when it is necessary to drive multiple groups of moving contact assemblies 13 arranged in the first direction at the same time, and improve the reliability of the pushing mechanism 40 to push such a large contact system 10.

[0190] The armature assembly 22 includes a first connecting arm 221 and a second connecting arm 222. The armature assembly 22 can rotate back and forth about a rotating shaft 22a parallel to the first direction, so that the driving ends of the first connecting arm 221 and the second connecting arm 222 move in opposite directions. Two first pushing cards 411 are correspondingly connected to the first connecting arm 221 and the second connecting arm 222. Two second pushing cards 421 are correspondingly connected to the first connecting arm 221 and the second connecting arm 222. The ends of the two first pushing cards 411 away from the first moving contact assembly 131 are respectively correspondingly connected to the driving ends of the first connecting arm 221 and the second connecting arm 222, and the ends of the two second pushing cards 421 away from the second moving contact assembly 132 are respectively correspondingly connected to the driving ends of the first connecting arm 221 and the second connecting arm 222.

[0191] Since the driving ends of the first connecting arm 221 and the second connecting arm 222 move in opposite directions, when the first pushing cards 411 and the second pushing cards 421 connected to the first connecting arm 221 move in the same direction along the second direction, the first pushing cards 411 and the second pushing cards 421 connected to the second connecting arm 222 move in the opposite direction along the second direction, so that when the correspondingly arranged first moving contact pieces 1311 are in contact with each other, the correspondingly arranged second moving contact pieces 1321 are in contact with each other; correspondingly, when the correspondingly arranged first moving contact pieces 1311 are disconnected from each other, the correspondingly arranged second moving contact pieces 1321 are disconnected from each other.

[0192] For the sake of easy understanding, the arrangement manner of the first moving contact assembly 131 on the seat body 31 will be described below in combination with the implementation manner of the two first moving contact pieces 1311 of the first moving contact assembly 131 being in contact with each other or disconnected from each other, but it is not limited thereto.

[0193] Combined with Figure 3 and Figure 6 As shown, when the armature assembly 22 rotates about the rotating shaft 22a parallel to the first direction, the pushing mechanism 40 can drive the swinging end 13a2 of the first moving contact piece 1311 under the drive of the armature assembly 22, so that the swinging end 13a2 contacts or separates from the adjacent first moving contact piece 1311 along the second direction.

[0194] Among the two first movable contact members 1311 of the first movable contact assembly 131, the swing end 13a2 of any one of the first movable contact members 1311 corresponds to the fixed end 13a1 of the other first movable contact member 1311, so that the stationary contact 13b and the movable contact 13c of one of the first movable contact members 1311 are respectively opposite to the movable contact 13c and the stationary contact 13b of the other first movable contact member 1311. The swing end 13a2 of one of the first movable contact members 1311 is connected to one of the first push cards 411, and the swing end 13a2 of the other first movable contact member 1311 is connected to the other first push card 411. Thus, when the two first push cards 411 move in opposite directions, the swing ends 13a2 of the two first movable contact members 1311 move in opposite directions driven by the corresponding two first push cards 411, so that the two sets of correspondingly arranged movable contacts 13c and stationary contacts 13b of the two first movable contact members 1311 are in contact with each other or separated from each other.

[0195] Correspondingly, among the two second movable contact members 1321 of the second movable contact assembly 132, the swing end 13a2 of any one of the second movable contact members 1321 corresponds to the fixed end 13a1 of the other second movable contact member 1321, so that the stationary contact 13b and the movable contact 13c of one of the second movable contact members 1321 are respectively opposite to the movable contact 13c and the stationary contact 13b of the other second movable contact member 1321. The swing end 13a2 of one of the second movable contact members 1321 is connected to one of the second push cards 421, and the swing end 13a2 of the other second movable contact member 1321 is connected to the other second push card 421. Thus, when the two second push cards 421 move in opposite directions, the swing ends 13a2 of the two second movable contact members 1321 move in opposite directions driven by the corresponding two second push cards 421, so that the two sets of correspondingly arranged movable contacts 13c and stationary contacts 13b of the two second movable contact members 1321 are in contact with each other or separated from each other.

[0196] In some embodiments, the armature assembly 22 is located between the coil assembly 21 and the contact system 10 along the second direction. In this way, the armature assembly 22 can be closer to the contact system 10, which is beneficial to reducing the length of the lever arm for the armature assembly 22 to drive the contact system 10 to act, so as to make the structure compact, realize the miniaturization of the relay, and is beneficial to reducing the length of the pushing members (such as the first push card 411 and the second push card 421 in this embodiment) connected between the armature assembly 22 and the contact system 10 along the second direction, avoiding deformation and fracture of the pushing members. In addition, it can also avoid the need for the pushing members to avoid the coil assembly 21, reducing the structural complexity.

[0197] Taking the armature assembly 22 including the first connecting arm 221 and the second connecting arm 222 as an example, the first connecting arm 221 and the second connecting arm 222 are located on the side of the armature assembly 22 along the second direction facing away from the coil assembly 21, and the driving end of the first connecting arm 221 and the driving end of the second connecting arm 222 are respectively located on both sides of the armature assembly 22 along the third direction; the first direction, the second direction and the third direction are perpendicular to each other.

[0198] In this embodiment, since the first connecting arm 221 and the second connecting arm 222 are located on the side of the armature assembly 22 facing away from the coil assembly 21 along the second direction, the driving end of the first connecting arm 221 and the driving end of the second connecting arm 222 are short in the second direction from the contact system 10. The first group of push cards 41 and the second group of push cards 42 serve as transmission structures for driving the swing end 13a2 of the corresponding movable contact 13a to move under the drive of the armature assembly 22. The shorter the distance between the driving end of the first connecting arm 221 and the driving end of the second connecting arm 222 and the contact system 10 in the second direction, the shorter the extension length of the two first push cards 411 in the first group of push cards 41 and the two second push cards 421 in the second group of push cards 42 in the second direction, and thus the movable contact 13a is not easily deformed when being pushed to move, so as to maintain the contact reliability between the movable contacts 13a, thereby improving the reliability of the relay.

[0199] It should be noted that the number of push cards in the push mechanism 40 is not limited to the first group of push cards 41 and the second group of push cards 42. In some embodiments, the push mechanism 40 includes multiple groups of push cards, and multiple groups of push cards refer to the number of groups of push cards being 2 or more. Each group of push cards is arranged along the first direction and is respectively connected to each of the movable contact components 13 arranged along the first direction. The structure of each group of push cards and the connection structure with each movable contact component 13 are not limited here.

[0200] In some embodiments, since there may be multiple groups of moving contact components 13, the multiple groups of moving contact components 13 may be installed in the mounting seat 30 in such a manner that some moving contact components 13 are installed in the first mounting cavity 301 and other moving contact components 13 are installed in the second mounting cavity 301.

[0201] For example, in an embodiment where the mounting base 30 includes a base body 31 and a first mounting plate 32, the first mounting plate 32 divides the inner cavity of the base body 31 into a first mounting cavity 301 and a second mounting cavity 302 along a first direction. At least one set of moving contact assemblies 13 (such as the first moving contact assembly 131) can be mounted into the first mounting cavity 301 from a first mounting opening, and at least another set of moving contact assemblies 13 (such as the second moving contact assembly 132) can be mounted into the second mounting cavity 302 from a second mounting opening. In this way, only grooves need to be provided on the side wall of the mounting base corresponding to the positions where the first moving contact assembly and the second moving contact assembly are located respectively, so as to respectively meet the requirements for leading out the electrical leading-out parts of the first moving contact assembly and the second moving contact assembly, instead of providing a whole groove along the first direction to meet the requirements for leading out the electrical leading-out parts of the first moving contact assembly and the second moving contact assembly. Then, the technical solution of the present application reduces the grooving depth, so as to reduce the probability of deformation of the mounting base, thereby improving the reliability of the relay product.

[0202] In an embodiment where the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22, the armature assembly 22 is configured to move based on the polarity change of the coil assembly 21 and drive each moving contact assembly 13 to act synchronously through each set of pushing cards. The electromagnetic system 20 can be inserted into the base body 31 from one end of the mounting base 30 along the first direction, that is, the electromagnetic system 20 and the moving contact unit 10b can be mounted in the same direction, so that both the electromagnetic system 20 and the moving contact unit 10b can be simply mounted onto the mounting base 30. This structure is simple and convenient for installation, and is helpful for assembly with the aid of automated equipment, and has high installation efficiency.

[0203] Combined Figures 10 to 12 As shown, in some embodiments, the contact system 10 includes at least two moving contact units 10b and at least two leading-out units 10a, and the leading-out units 10a are arranged in one-to-one correspondence with the moving contact units 10b. Each moving contact unit 10b is arranged along a second direction, and the second direction is perpendicular to the first direction. When each moving contact unit 10b is in a first switching state, it is respectively electrically connected in cooperation with adjacent moving contact units 10b, so that among the two leading-out units 10a corresponding to two adjacent moving contact units 10b arranged adjacent to each other, the first static leading-out component 11 of one leading-out unit 10a and the second static leading-out component 12 of the other leading-out unit 10a are connected in series with each other (for example, the first static leading-out piece 111 and the third static leading-out piece 113 of one leading-out unit 10a are correspondingly connected in series with the second static leading-out piece 112 and the fourth static leading-out piece 114 of the other leading-out unit 10a). When each moving contact unit 10b is in a second switching state, each leading-out unit 10a is set to be open-circuited. Thus, the contact system 10 can perform series-parallel function switching to adapt to some special usage scenarios, such as being applied to the battery management system of an automobile to optimize the charging and discharging functions of the battery pack.

[0204] The first static lead-out component 11 and the second static lead-out component 12 of the lead-out unit 10a are respectively disposed on both sides of the corresponding moving contact element 10b along the third direction. In this way, the space in the third direction is fully utilized to arrange the first static lead-out component 11 and the second static lead-out component 12, so as to reduce the space occupied by the first static lead-out component 11 and the second static lead-out component 12 in the first direction and the second direction on the moving contact unit 10b, which is beneficial to improving the layout compactness among the components (such as the moving contact 13a) in the moving contact unit, and thus is beneficial to the miniaturization of the relay.

[0205] When the two moving contacts 13a in each moving contact unit 10b are separated from each other, the adjacent moving contacts 13a in at least two moving contact units 10b are connected in parallel with each other, and one static lead-out piece in one lead-out unit 10a is electrically connected to one static lead-out piece of the other lead-out unit 10a, so that the contact system 10 can perform the series-parallel function switching.

[0206] For the sake of easy understanding, hereinafter, an example in which the contact system 10 includes two moving contact units 10b and two lead-out units 10a will be taken.

[0207] Continue to combine Figures 11 to 12 As shown, in some embodiments, the contact system 10 includes two moving contact units 10b, namely the first moving contact unit 101 and the second moving contact unit 102, and the contact system 10 includes two lead-out units 10a, namely the first lead-out unit 103 and the second lead-out unit 104.

[0208] The first moving contact unit 101 and the second moving contact unit 102 are arranged along the second direction, and the first moving contact unit 101 is located between the armature assembly 22 and the second moving contact unit 102. The lead-out unit 10a is arranged in one-to-one correspondence with the moving contact unit 10b.

[0209] Regarding the structures of the first moving contact unit 101 and the second moving contact unit 102, reference can be made to the description of the moving contact unit 10b above; correspondingly, the structures of the first lead-out unit 103 and the second lead-out unit 104 can be referred to the description of the lead-out unit 10a above, and will not be elaborated here. For example, each of the first moving contact unit 101 and the second moving contact unit 102 includes the aforementioned first static lead-out component 11 and second static lead-out component 12.

[0210] It should be noted that the first static lead-out component 11 and the second static lead-out component 12 of the lead-out unit 10a are respectively disposed on both sides of the corresponding moving contact unit 10b along the third direction. That is to say, the first static lead-out component 11 and the second static lead-out component 12 of the first lead-out unit 103 are respectively disposed on both sides of the first moving contact unit 101 along the third direction, and the first static lead-out component 11 and the second static lead-out component 12 of the second lead-out unit 104 are respectively disposed on both sides of the second moving contact unit 102 along the third direction.

[0211] For ease of description, in conjunction with Figures 10 to 12 as shown, the "static lead-out piece one P1", "static lead-out piece two P2", "static lead-out piece three P3" and "static lead-out piece four P4" are adopted to correspondingly represent the "first static lead-out piece 111", "second static lead-out piece 112", "third static lead-out piece 113" and "fourth static lead-out piece 114" in the first lead-out unit 10a; the "static lead-out piece five P5", "static lead-out piece six P6", "static lead-out piece seven P7" and "static lead-out piece eight P8" are adopted to correspondingly represent the "first static lead-out piece 111", "second static lead-out piece 112", "third static lead-out piece 113" and "fourth static lead-out piece 114" in the second lead-out unit 10a. And the connection terminals corresponding to each static lead-out piece are sequentially called "terminal one D1", "terminal two D2", "terminal three D3", "terminal four D4", "terminal five D5", "terminal six D6", "terminal seven D7" and "terminal eight D8".

[0212] In conjunction with Figure 12 as shown, in some embodiments, static contacts 13b and moving contacts 13c are provided on both sides in the second direction of the moving contact piece 13a of the first moving contact unit 101 that is closer to the second moving contact unit 102. Static contacts 13b are provided on both sides in the second direction of the fixed end 13a1 of the moving contact piece 13a of the second moving contact unit 102 that is closer to the first moving contact unit 101. Correspondingly, moving contacts 13c are provided on both sides in the second direction of the swinging end 13a2 of the moving contact piece 13a.

[0213] Static contacts 13b and moving contacts 13c are provided on both sides in the second direction of the moving contact piece 13a of the second moving contact unit 102 that is closer to the first moving contact unit 101. Static contacts 13b are provided on both sides in the second direction of the fixed end 13a1 of the moving contact piece 13a of the second moving contact unit 102 that is closer to the first moving contact unit 101. Correspondingly, moving contacts 13c are provided on both sides in the second direction of the swinging end 13a2 of the moving contact piece 13a. When the two moving contact pieces 13a of the first moving contact unit 101 are separated from each other and the two moving contact pieces 13a of the second moving contact unit 102 are separated from each other, the moving contact pieces 13a adjacent to each other between the first moving contact unit 101 and the second moving contact unit 102 are in contact through the correspondingly arranged moving contacts 13c and static contacts 13b, so as to realize the cooperative electrical connection between the first moving contact unit 101 and the second moving contact unit 102, so that each lead-out unit 10a has a static lead-out component connected in series with each other.

[0214] In the above-described embodiments, it is possible not only to bring the two movable contact members 13a in the same movable contact unit 10b into contact with each other, but also to bring the two movable contact members 13a in different movable contact units 10b into contact with each other. Correspondingly, the two movable contact members 13a in the same movable contact unit 10b can be brought into contact with each other, and the two movable contact members 13a in different movable contact units 10b can also be brought into contact with each other. Subsequently, the relay can use the first movable contact unit 101 and the second movable contact unit 102 to achieve series-parallel switching.

[0215] Continuing with the combination of Figures 10 to 12 As shown, the structural arrangement in which the first static lead piece 111, the second static lead piece 112, the third static lead piece 113, and the fourth static lead piece 114 all have bent portions is also applicable to the case of two sets of lead units 10a. For example, as Figure 10 shown, in some embodiments, whether it is the first lead unit 103 or the second lead unit 104, all the connection terminals (i.e., terminal one D1 - terminal eight D8) are arranged in the same plane parallel to both the first direction and the third direction. Specifically, the static lead piece one P1, the static lead piece two P2, the static lead piece three P3, the static lead piece four P4, the static lead piece five P5, the static lead piece six P6, the static lead piece seven P7, and the static lead piece eight P8 all have bent portions, and the connection terminals are led out to the outside of the base body 31 along the second direction through their respective bent portions, so that all the connection terminals are arranged in the same plane parallel to both the first direction and the third direction. With this structural arrangement, the connection terminals are arranged on the same side surface of the base body 31, occupying a small space, which is convenient for the electrical connection of the relay with external components such as circuit boards.

[0216] Combining Figure 10 and Figure 11 shown, in the first lead unit 103 and the second lead unit 104, the connection terminals (i.e., the first connection terminal 111b and the third connection terminal 113b) of the first static lead piece 111 and the third static lead piece 113 of one of them are arranged between the connection terminals of the first static lead piece 111 and the third static lead piece 113 of the other along the first direction. For example, as Figure 10As shown, terminal five D5 and terminal seven D7 are located between terminal one D1 and terminal three D3. For another example, in other embodiments, the positions of terminal one D1 and terminal five D5 can be interchanged, and the positions of terminal three D3 and terminal seven D7 can be interchanged, so that terminal one D1 and terminal three D3 are located between terminal five D5 and terminal seven D7. Correspondingly, in the first lead-out unit 103 and the second lead-out unit 104, the connection terminals of the second static lead-out piece 112 and the fourth static lead-out piece 114 of one of them (i.e., the second connection terminal 112b and the fourth connection terminal 114b) are arranged in the first direction between the connection terminals of the second static lead-out piece 112 and the fourth static lead-out piece 114 of the other. In this embodiment, the contact system 10 can perform series-parallel switching to adapt to some special usage scenarios, such as being applied to the battery management system of an automobile to optimize the charging and discharging functions of the battery pack. Through the above structural settings, at least one group of connection terminals connected to the same load terminal can be arranged close to each other, facilitating subsequent circuit connection and insulation design between the connection terminals connected to different load terminals.

[0217] Continue to combine Figures 10 to 12 As shown, the first moving contact unit 101 is located between the armature assembly 22 and the second moving contact unit 102, that is to say, the second moving contact unit 102 is located on the side of the first moving contact unit 101 facing away from the armature assembly 22. In the first moving contact unit 101, the first moving contact piece 1311 farther from the second moving contact unit 102 is connected to the first static lead-out piece P1, the first moving contact piece 1311 closer to the second moving contact unit 102 is connected to the second static lead-out piece P2, the second moving contact piece 1321 farther from the second moving contact unit 102 is connected to the third static lead-out piece P3, and the first moving contact piece 1311 closer to the second moving contact unit 102 is connected to the fourth static lead-out piece P4.

[0218] In the second moving contact unit 102, the first moving contact piece 1311 closer to the first moving contact unit 101 is connected to the fifth static lead-out piece P5, the first moving contact piece 1311 farther from the first moving contact unit 101 is connected to the sixth static lead-out piece P6, the second moving contact piece 1321 closer to the first moving contact unit 101 is connected to the seventh static lead-out piece P7, and the second moving contact piece 1321 farther from the first moving contact unit 101 is connected to the eighth static lead-out piece P8.

[0219] In this embodiment, the terminals six D6 of the static lead-out piece six P6 and the terminals one D1 of the static lead-out piece one P1 are arranged along the third direction, the terminals eight D8 of the static lead-out piece eight P8 and the terminals three D3 of the static lead-out piece three P3 are arranged along the third direction, the terminals two D2 of the static lead-out piece two P2 and the terminals four D4 of the static lead-out piece four P4 are both located between the terminals six D6 of the static lead-out piece six P6 and the terminals eight D8 of the static lead-out piece eight P8 along the first direction, and the terminals five D5 of the static lead-out piece five P5 and the terminals seven D7 of the static lead-out piece seven P7 are both located between the terminals one D1 of the static lead-out piece one P1 and the terminals three D3 of the static lead-out piece three P3. Through this structural arrangement, at least one group of two connection terminals for connecting the same end of the circuit can be arranged adjacent to each other, so as to facilitate the external connection of the two connection terminals to the same end of the circuit. Compared with the situation where two connection terminals for externally connecting the same terminal are separated by other connection terminals, this structural arrangement of the present application is beneficial to reducing the connection difficulty and is beneficial to isolating between two connection terminals for externally connecting different terminals.

[0220] In this embodiment, in the first lead-out unit 103 and the second lead-out unit 104, the connection terminals of the two first static lead-out pieces 111 (i.e., the terminals one D1 and the terminals five D5), the connection terminals of the two second static lead-out pieces (i.e., the terminals two D2 and the terminals six D6), the connection terminals of the two third static lead-out pieces (i.e., the terminals three D3 and the terminals seven D7), and the connection terminals of the two fourth static lead-out pieces (i.e., the terminals four D4 and the terminals eight D8) are all arranged adjacent to each other in the first direction. Since the first static lead-out piece 111 and the second static lead-out piece 112 are used to connect to the first moving contact assembly 131 (provided in the first installation cavity 301), and the third static lead-out piece 113 and the fourth static lead-out piece 114 are used to connect to the second moving contact assembly 131 (provided in the second installation cavity 302), therefore, the arrangement of the connection terminals in this embodiment will make each connection terminal correspond to the outer wall of the installation cavity where the corresponding moving contact assembly 13 is located, thereby being able to reduce the structural complexity of each static lead-out piece and reduce the amount of conductive material required for manufacturing the static lead-out piece.

[0221] Combined Figure 10 As shown, the connection terminals of the first static lead-out piece 111 and the third static lead-out piece 113 located in the middle along the first direction (i.e., the terminals five D5 and the terminals seven D7) are used to form a series connection with the connection terminals of the second static lead-out piece 112 and the fourth static lead-out piece 114 located in the middle along the first direction (i.e., the terminals two D2 and the terminals four D4) in the first switch state. Based on this adjacent arrangement of the connection terminals for series connection, when the relay is applied to the power supply system of the battery pack, the wire length between the series-connected battery packs can be shortened, the line resistance can be reduced, and the energy loss can be reduced, especially in high-current scenarios. In addition, this arrangement can also avoid current deviation caused by uneven line impedance on both sides to improve the battery pack balance.

[0222] It should be noted that the connection terminal in the middle is used to realize the series function, and the connection terminals on both sides are used for parallel connection. This setting helps to flexibly adapt to the expansion requirements of the battery module.

[0223] Furthermore, the relay further includes an isolating member, which is relatively fixed to the mounting seat 30 and electrically isolates the connection terminals of the first lead-out unit 101 and the second lead-out unit 102 that are adjacent to each other in the first direction.

[0224] For example, as shown in Figure 11 In some embodiments, the relay includes four isolating members, namely a first isolating member 50, a second isolating member 60, a third isolating member 70, and a fourth isolating member 80. The first isolating member 50, the second isolating member 60, the third isolating member 70, and the fourth isolating member 80 are each connected to one of the two lead-out units 10a (such as the first lead-out unit 101 and the second lead-out unit 102). It should be noted here that the number of isolating members can also be 1, 2, or 3, or more than 3. The number and setting position of the isolating members are not limited again.

[0225] For the sake of easy understanding below, the setting of the isolating member is exemplified, but it does not mean that the structure and setting position of the isolating member are limited thereto.

[0226] In some embodiments, the first isolating member 50 is connected to one of the two first static lead-out pieces (i.e., the static lead-out piece one P1 and the static lead-out piece five P5); the second isolating member 60 is connected to one of the two second static lead-out pieces (i.e., the static lead-out piece two P2 and the static lead-out piece six P6); the third isolating member 70 is connected to one of the two third static lead-out pieces (i.e., the static lead-out piece three P3 and the static lead-out piece seven P7); the fourth isolating member 80 is connected to one of the two fourth static lead-out pieces (i.e., the static lead-out piece four P4 and the static lead-out piece eight P8).

[0227] The first isolating member 50 is used to electrically isolate the static lead-out piece one P1 and the static lead-out piece five P5, that is, the first isolating member 50 increases the creepage distance between the static lead-out piece one P1 and the static lead-out piece five P5. The second isolating member 60 is used to electrically isolate the static lead-out piece two P2 and the static lead-out piece six P6, that is, the second isolating member 60 increases the creepage distance between the static lead-out piece two P2 and the static lead-out piece six P6. The third isolating member 70 is used to electrically isolate the static lead-out piece three P3 and the static lead-out piece seven P7, that is, the third isolating member 70 increases the creepage distance between the static lead-out piece three P3 and the static lead-out piece seven P7. The fourth isolating member 80 is used to electrically isolate the static lead-out piece four P4 and the static lead-out piece eight P8, that is, the fourth isolating member 80 increases the creepage distance between the static lead-out piece four P4 and the static lead-out piece eight P8.

[0228] In this embodiment, the first spacer 50, the second spacer 60, the third spacer 70, and the fourth spacer 80 are used to increase the creepage distance between the connection terminals of different terminals for external connection circuits at corresponding positions, thereby improving the reliability of the relay performance.

[0229] The first spacer 50 and the third spacer 70 are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane. The second spacer 60 and the fourth spacer 80 are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane. The first stationary lead piece 111 and the third stationary lead piece 113 located in the same lead-out unit 10a are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane. For example, the first stationary lead piece P1 and the third stationary lead piece P3 are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane. For another example, in some embodiments, the fifth stationary lead piece P5 and the seventh stationary lead piece P7 are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane.

[0230] The second stationary lead piece 112 and the fourth stationary lead piece 114 located in the same lead-out unit 10a are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane. For example, the second stationary lead piece P2 and the fourth stationary lead piece P4 are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane. For another example, in some embodiments, the sixth stationary lead piece P6 and the eighth stationary lead piece P8 are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane.

[0231] In the above embodiment, the setting of the mirror-symmetric structure is beneficial to simplifying the processing difficulty and installation difficulty of each component, and this mirror-symmetric structure is beneficial to the assembly of each structure of the relay and improves the space utilization rate, so as to facilitate the miniaturization of the relay. Moreover, this design is beneficial to simplifying the structure, enabling at least some of the stationary lead pieces to be shared, thus saving production costs. In addition, it can ensure that each stationary lead piece has an even current-carrying capacity.

[0232] It should be noted that in combination with Figure 10 、 Figure 11 and Figure 13 As shown, in the embodiment where the relay includes the first lead-out unit 103 and the second lead-out unit 104, the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4 on the mounting base 30 are all in two groups to meet the need for the corresponding stationary lead pieces in the two groups of lead-out units 10a of the first lead-out unit 103 and the second lead-out unit 104 to be led out from the mounting base 30. The structural settings of the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4 will not be elaborated here.

[0233] In combination with Figure 14 and Figure 15As shown, the first separator 50 includes a first blocking wall 51 and a second blocking wall 52. The first blocking wall 51 is located between the outer wall surface 30d of the mounting base 30 and the connection terminal of one of the first static lead-out pieces 111 (i.e., the first static lead-out piece P1 or the fifth static lead-out piece P5). That is to say, the first blocking wall 51 can be located between the outer wall surface 30d of the mounting base 30 and the terminal D1, or the first blocking wall 51 can be located between the outer wall surface 30d of the mounting base 30 and the terminal D5. The second blocking wall 52 is connected to the first blocking wall 51. The second blocking wall 52 is located between the connection terminals of the two first static lead-out pieces 111 (i.e., the first static lead-out piece P1 and the fifth static lead-out piece P5) in the first direction. That is to say, the second blocking wall 52 is located between the terminal D1 and the terminal D5, thereby increasing the creepage distance between the connection terminals of the two first static lead-out pieces 111 (i.e., the terminal D1 and the terminal D5) in the first direction. Therefore, in this embodiment, under the shielding of the first blocking wall 51 and the second blocking wall 52, the creepage distance between the side surfaces of the terminal D1 and the terminal D5 facing the outer wall surface 30d of the mounting base 30 is increased.

[0234] The first separator 50 further includes a third blocking wall 53. The third blocking wall 53 is connected to the inner sides of the first blocking wall 51 and the second blocking wall 52 in the third direction (i.e., the side closer to the center of the mounting base 30 in the third direction). The first blocking wall 51, the second blocking wall 52 and the third blocking wall 53 are connected and jointly enclose a first receiving groove 50a with a first opening. The connection terminal of one of the first static lead-out pieces 111 (i.e., the first static lead-out piece P1 or the fifth static lead-out piece P5) is received in the first receiving groove 50a and exposed from the first opening to the outside of the first separator 50. In this embodiment, due to the setting of the third blocking wall 53, the creepage distance of the inner sides of the connection terminals of the two first static lead-out pieces 111 (i.e., the terminal D1 and the terminal D5) in the first direction can be increased, avoiding current breakdown at the corner positions of the terminal D1 and the terminal D5. By providing the first opening, the connection terminal at the first receiving groove 50a can be reliably externally connected.

[0235] Combined Figure 16 and Figure 17As shown, the second spacer 60 includes a fourth blocking wall 61 and a fifth blocking wall 62. The fourth blocking wall 61 is located between the outer wall surface 30d of the mounting base 30 and the connection terminal of one of the second static lead-out pieces 112 (i.e., the second static lead-out piece P2 or the sixth static lead-out piece P6). That is to say, the fourth blocking wall 61 can be located between the outer wall surface 30d of the mounting base 30 and the terminal D2, or the fourth blocking wall 61 can be located between the outer wall surface 30d of the mounting base 30 and the terminal D6. The fifth blocking wall 62 is connected to the fourth blocking wall 61. The fifth blocking wall 62 is located between the connection terminals of two second static lead-out pieces 112 (i.e., the second static lead-out piece P2 and the sixth static lead-out piece P6) in the first direction, thereby increasing the creepage distance between the connection terminals of the two second static lead-out pieces 112 (i.e., the terminal D2 and the terminal D6) in the first direction. Therefore, in this embodiment, under the shielding of the fourth blocking wall 61 and the fifth blocking wall 62, the creepage distance between the terminal D2 and the terminal D6 toward the surface on the side of the outer wall surface 30d of the mounting base 30 is increased.

[0236] The second spacer 60 further includes a sixth blocking wall 63. The sixth blocking wall 63 is connected to the inner sides of the fourth blocking wall 61 and the fifth blocking wall 62 in the third direction. The fourth blocking wall 61, the fifth blocking wall 62 and the sixth blocking wall 63 are connected and jointly enclose a second receiving groove 60a with a second opening. The connection terminal of one of the second static lead-out pieces 112 (i.e., the second static lead-out piece P2 or the sixth static lead-out piece P6) is received in the second receiving groove 60a and is exposed from the second opening to the outside of the second spacer 60. In this embodiment, due to the setting of the sixth blocking wall 63, the creepage distance of the inner sides of the connection terminals of the two second static lead-out pieces 112 (i.e., the terminal D2 and the terminal D6) in the first direction can be increased, avoiding current breakdown at the corner positions of the terminal D2 and the terminal D6. By providing the second opening, the connection terminal at the second receiving groove 60a can be reliably externally connected.

[0237] Combined again with Figure 10 、 Figure 11 and Figure 13 As shown, based on the mounting base 30, the first grooves C1, the second grooves C2, the third grooves C3 and the fourth grooves C4 are independently provided corresponding to the first lead-out unit 103 and the second lead-out unit 104. The first spacer 50, the second spacer 60, the third spacer 70 and the fourth spacer 80 can be partially structured and disposed in the corresponding grooves. For example, the first spacer 50, the second spacer 60, the third spacer 70 and the fourth spacer 80 are all provided with clamping portions S and are respectively matched with the first grooves C1, the second grooves C2, the third grooves C3 and the fourth grooves C4 through their respective clamping portions S. In this way, these grooves can be used to facilitate the installation of the corresponding spacers and improve the installation stability of the spacers.

[0238] The clamping part S is used for being connected to the corresponding bending part, and the clamping part S is in limit fit with the relay housing and / or the corresponding bending part in the first direction, the second direction and the third direction.

[0239] Each clamping part S is provided with a clamping groove to cooperate with the corresponding static lead piece through its respective clamping groove. The clamping groove of the clamping part S is used to improve the assembly stability between each spacer and the corresponding static lead piece, so as to enhance the reliability of the relay. It should be noted that the clamping part S only needs to be able to cooperate with the corresponding groove, and no limitation is made here. As long as the clamping groove can clamp a part of the corresponding static lead piece to improve the assembly stability between the spacer and the corresponding static lead piece. The shapes of the clamping part S and the clamping groove are not limited here.

[0240] In some embodiments, the relay further includes two mounting covers; the two mounting covers are respectively fixed to both ends of the mounting base 30 in the first direction and form a relay housing with the mounting base 30, and the two mounting covers respectively seal the first mounting port and the second mounting port. The clamping part S is in limit fit with the relay housing and / or the corresponding lead-out unit 10a in the first direction, the second direction and the third direction, thereby improving the mounting stability of the corresponding spacer.

[0241] In some embodiments, in combination Figure 8 、 Figure 9 and Figure 13 As shown, the mounting base 30 has a first end face 30a and a second end face 30b in the first direction. The first groove C1 and the second groove C2 both extend in the first direction to the first end face 30a, and the third groove C3 and the fourth groove C4 both extend in the first direction to the second end face 30b. Moreover, the first groove C1, the second groove C2, the third groove C3 and the fourth groove C4 all extend to the inner wall surface 30c and the outer wall surface 30d of the mounting base 30, and respectively form inner notch and outer notch on the inner wall surface 30c and the outer wall surface 30d. It can be understood that the inner notch communicates with the inner cavity of the mounting base 30. Taking the mounting base 30 having a first mounting cavity 301 and a second mounting cavity 302 as an example, the inner notch C11 of the first groove C1 and the inner notch C21 of the second groove both communicate with the first mounting cavity 301, and the inner notch C31 of the third groove C3 and the inner notch C41 of the fourth groove C4 both communicate with the second mounting cavity 302.

[0242] In some embodiments, the inner notch is located on the side wall of the mounting base 30 parallel to the second direction, and the outer notch is located on the outer wall surface 30d of the mounting base 30 closer to the second moving contact unit 102 in the second direction. In this way, each groove can meet the need for the corresponding static lead-out piece to be led out from the inside of the mounting base 30 to the outside. At the same time, since the first groove C1 is located on the side wall of the mounting base 30 parallel to the second direction, that is to say, the side wall of the mounting base 30 extending parallel to the second direction forms the first groove C1 for accommodating the first static lead-out piece P1 and the fifth static lead-out piece P5, and the thickened parts are provided on the side wall corresponding to the static lead-out piece P1 and the fifth static lead-out piece P5, which is beneficial to reliably support the first static lead-out piece P1 and the fifth static lead-out piece P5 in the second direction and enhance the mounting stability of the first static lead-out piece P1 and the fifth static lead-out piece P5. That is to say, this structural setting makes the first static lead-out piece P1 and the fifth static lead-out piece P5 not prone to looseness or deformation when receiving the contact force of the moving and static contacts 13b in the second direction, thereby improving the reliability of the relay.

[0243] The depth of the inner notch C11 of the first groove C1 and the inner notch C21 of the second groove in the first direction is less than or equal to 1 / 3 of the depth of the first mounting cavity 301. The shallow depth of this inner notch makes the side walls on both sides of the first mounting cavity 301 in the third direction not be divided into at least two relatively independent parts, so that the two side walls in the third direction can maintain good structural strength and are not prone to deformation. In addition, it can also prevent at least one of the side walls on the side where the outer avoidance surface 30d is located from being separated by the groove extending in the first direction (such as the second groove C2) and losing connection with other parts, and avoid causing the side wall to be deformed due to being unable to bear the contact pressure when the moving contact and the static contact are in contact.

[0244] The depth of the inner notch C31 of the third groove C3 and the inner notch C41 of the fourth groove C4 in the first direction is less than or equal to 1 / 3 of the depth of the second mounting cavity 302. The shallow depth of this inner notch makes the side walls on both sides of the second mounting cavity 302 in the third direction not be divided into at least two relatively independent parts, so that the two side walls in the third direction can maintain good structural strength and are not prone to deformation. In addition, it can also prevent at least one of the side walls on the side where the outer avoidance surface 30d is located from being separated by the groove extending in the first direction (such as the third groove C3) and losing connection with other parts, and avoid causing the side wall to be deformed due to being unable to bear the contact pressure when the moving contact and the static contact are in contact.

[0245] It should be noted that the outer slot openings C12 of the first groove C1, the outer slot openings C22 of the second groove C2, the outer slot openings C32 of the third groove, and the outer slot openings C42 of the fourth groove C4 are all located outside the outer wall surface 30d of the mounting base 30 that is closer to the contact system 10 in the second direction. In this way, the connection terminals of the respective static lead-out sheets passing through the mounting base 30 from these outer slot openings can be correspondingly arranged in the same plane parallel to the outer wall surface 30d, which is conducive to the miniaturization of the relay. Moreover, the conductive material consumed by the respective static lead-out sheets for leading out the connection terminals outside the mounting base 30 is reduced, so as to reduce the cost.

[0246] In some other embodiments, as long as the adjacent connection terminals are far enough apart from each other, the adjacent connection terminals may not be insulated.

[0247] It should be noted that the respective static lead-out sheets in the relay are not limited to being bent and led out to the same outer wall surface 30d of the seat body 31.

[0248] For example, in combination with Figure 18 and Figure 19 as shown, the first static lead-out sheet P1, the second static lead-out sheet P2, the third static lead-out sheet P3, the fourth static lead-out sheet P4, the fifth static lead-out sheet P5, the sixth static lead-out sheet P6, the seventh static lead-out sheet P7, and the eighth static lead-out sheet P8 all extend out of the seat body 31 in the third direction. In combination with Figure 21 as shown, the mounting base 30 is provided with corresponding grooves at the positions corresponding to the respective static lead-out sheets. Due to Figure 21 the perspective reason, Figure 21 only two groups of the first grooves C1, two groups of the second grooves C2, and two groups of the fourth grooves C4 are shown. In combination with the foregoing embodiment including the third groove C3, in this embodiment, the mounting base 30 is also correspondingly provided with two groups of the third grooves C3. In this way, the respective static lead-out sheets pass through the mounting base 30 from the corresponding grooves. For the structural settings of the respective static lead-out sheets and the respective grooves, no further description will be given here.

[0249] The lead-out unit 10a includes a first external lead-out member 10a1 and a second external lead-out member 10a2, that is, both the first lead-out unit 103 and the second lead-out unit 104 include the first external lead-out member 10a1 and the second external lead-out member 10a2. In the first lead-out unit 103, the first static lead-out sheet P1 and the third static lead-out sheet P3 are connected by the first external lead-out member 10a1, so that the first static lead-out sheet P1 and the third static lead-out sheet P3 can be regarded as being used as the same lead-out end. The second static lead-out sheet P2 and the fourth static lead-out sheet P4 are connected by the second external lead-out member 10a2, so that the second static lead-out sheet P2 and the fourth static lead-out sheet P4 can be regarded as being used as the same lead-out end. Therefore, this setting enables the first moving contact assembly 131 and the second moving contact assembly 132 of the first moving contact unit 101 to be connected in parallel.

[0250] For ease of description, the first external lead member 10a1 and the second external lead member 10a2 in the second lead unit 103 may be respectively defined as a third external lead member 10a3 and a fourth external lead member 10a4. Among them, the static lead piece five P5 and the static lead piece seven P7 are connected through the third external lead member 10a3, so that the static lead piece five P5 and the static lead piece seven P7 can be regarded as the same lead terminal for use. The static lead piece six P6 and the static lead piece eight P8 are connected through the fourth external lead member 10a4, so that the static lead piece six P6 and the static lead piece eight P8 can be regarded as the same lead terminal for use. Therefore, this setting makes the first moving contact assembly 131 and the second moving contact assembly 132 of the second moving contact unit 102 be connected in parallel.

[0251] For ease of understanding, the two side walls of the side wall portion 311 of the seat body 31 that are opposite in the third direction are hereinafter referred to as the "first side wall 311a" and the "second side wall 311b". In some embodiments, the side wall portion 311 of the seat body 31 further includes a third side wall 311c and a fourth side wall 311d, and the third side wall 311c and the fourth side wall 311d are disposed opposite to each other in the second direction. Both ends of the third side wall 311c are connected to the first side wall 311a and the second side wall 311b, and both ends of the fourth side wall 311d are connected to the first side wall 311a and the second side wall 311b. Thus, the space enclosed by the first side wall 311a, the second side wall 311b, the third side wall 311c, and the fourth side wall 311d is the space enclosed by the seat body 31.

[0252] It should be noted that based on the fact that the first moving contact assembly 131 and the second moving contact assembly 132 are connected in parallel in the second switch state. Therefore, for the same lead unit 10a, since the first static lead piece 111 and the third static lead piece 113 need to be connected to the same load terminal of the external device. For example, the first static lead piece 111 and the third static lead piece 113 are connected through the first external lead member 10a1, and the first external lead member 10a1 or one of the first static lead piece 111 and the third static lead piece 113 can be used to connect to the load terminal of the external device. Correspondingly, since the second static lead piece 112 and the fourth static lead piece 114 need to be connected to another load terminal of the external device. For example, the second static lead piece 112 and the fourth static lead piece 114 are connected through the second external lead member 10a2, and the second external lead member 10a2 or one of the second static lead piece 112 and the fourth static lead piece 114 can be used to connect to another load terminal of the external device.

[0253] In some embodiments, when both the first moving contact unit 101 and the second moving contact unit 102 are in the first switching state, the moving contact 13a in the first moving contact unit 101 that is closer to the second moving contact unit 102 and the moving contact 13a in the second moving contact unit 102 that is closer to the first moving contact unit 101 are connected in parallel with each other, so that the second static lead piece 112 in the first lead unit 103 is electrically connected to the first static lead piece 111 of the second lead unit 104, and the fourth static lead piece 114 in the first lead unit 103 is electrically connected to the third static lead piece 113 of the second lead unit 104. Since the second static lead piece 112 and the fourth static lead piece 114 in the first lead unit 103 pass through the second external lead piece 10a2, and the first static lead piece 111 and the third static lead piece 113 in the second lead unit 104 pass through the third external lead piece 10a3. Therefore, in this embodiment, when both the first moving contact unit 101 and the second moving contact unit 102 are in the first switching state, the two adjacent moving contacts 13a in the first lead unit 103 and the second moving contact unit 102 are connected in parallel with each other, realizing the series connection between the second external lead piece 10a2 corresponding to the first lead unit 103 and the third external lead piece 10a3 corresponding to the second lead unit 104.

[0254] When both the first moving contact unit 101 and the second moving contact unit 102 are in the second switching state, the first static lead assembly 11 and the second static lead assembly 12 of the first lead unit 103 are electrically connected through the first moving contact unit 101, that is, in the first lead unit 103, the first external lead piece 10a1 corresponding to the first static lead assembly 11 is connected in series with the second external lead piece 10a2 corresponding to the second static lead assembly 12.

[0255] Correspondingly, the first static lead assembly 11 and the second static lead assembly 12 of the second lead unit 104 are electrically connected through the second moving contact unit 102, that is, in the second lead unit 104, the third external lead piece 10a3 corresponding to the first static lead assembly 11 is connected in series with the fourth external lead piece 10a4 corresponding to the second static lead assembly 12. Thus, in this second switching state, there are two independent conduction paths in the contact system 10. In practical applications, when the first external lead piece 10a1 corresponding to the first lead unit 103 and the third external lead piece 10a3 corresponding to the second lead unit 104 are connected to the same end of the external circuit, and the second external lead piece 10a2 corresponding to the first lead unit 103 and the fourth external lead piece 10a4 corresponding to the second lead unit 104 are connected to the other same end of the external circuit, these two conduction paths are arranged in parallel.

[0256] Therefore, in the embodiments of the present application, the relay can achieve series-parallel switching, thus having a wider application scenario.

[0257] The relay is not limited to being provided with two or more moving contact units 10b. For example, the relay is provided with one moving contact unit 10b. In this way, the third external lead 10a3 and the fourth external lead 10a4 provided corresponding to the second moving contact unit 102 can be omitted.

[0258] When the relay is provided with one moving contact unit 10a, the number of the first static lead piece 111, the second static lead piece 112, the third static lead piece 113, and the fourth static lead piece 114 can all be one, and all extend out of the seat body 31 along the third direction. Further, both the first static lead piece 111 and the third static lead piece 113 extend out of the first side wall 311a along the third direction, and are connected to each other through the first external lead 10a1. Both the second static lead piece 112 and the fourth static lead piece 114 extend out of the side wall on the other side of the mounting seat 30 along the third direction, and are connected to each other through the second external lead 10a2.

[0259] In the second switch state, the first static lead piece 111 is electrically conducted with the second static lead piece 112 through the first moving contact assembly 131, and the third static lead piece 113 is electrically conducted with the fourth static lead piece 114 through the second moving contact assembly 132. The first static lead piece 111 and the third static lead piece 113 are connected through the first external lead 10a1, and the second static lead piece 112 and the fourth static lead piece 114 are connected through the second external lead 10a2. The first moving contact assembly 131 and the second moving contact assembly 132 can be connected in parallel to increase the number of parallel branches, thereby reducing the overall contact resistance of the contact system 10.

[0260] Combined with Figure 19As shown, the first static lead-out piece 111 and the second static lead-out piece 112 are provided with a limit and cooperation part ST extending in the second direction. The limit and cooperation part ST cooperates with the mounting base 30 and is limited in the third direction by the mounting base 30. Thereby preventing the corresponding static lead-out piece from moving relative to the mounting base 30 in the third direction and loosening or disengaging from the mounting base 30, improving the mounting stability of the static lead-out piece on the side wall of the mounting base 30. Understandably, the third static lead-out piece 113 and the fourth static lead-out piece 114 can also be provided with a limit and cooperation part ST to cooperate with the mounting base 30, thereby improving the stability in the third direction. Of course, in some embodiments, at least one of the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 is provided with a limit and cooperation part ST, so that the corresponding static lead-out piece can cooperate with the mounting base 30 through the limit and cooperation part ST, which can improve the stability of the static lead-out piece. Thus, compared with the situation where none of the static lead-out pieces are provided with a limit and cooperation part ST, the stability of some static lead-out pieces in the relay can also be improved. Since the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 are respectively and correspondingly fitted into the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4. In this way, these grooves play a good limiting effect on the corresponding static lead-out pieces in the first direction and the second direction.

[0261] Combined Figure 20 As shown, in some embodiments, the coil assembly 21 includes at least two coil windings 211 arranged in the first direction. Therefore, in this embodiment, setting the coil assembly 21 to include at least two coil windings 211 arranged in the first direction can utilize the space in the first direction to arrange more coil windings 211, improving the space utilization rate in the first direction at the position where the coil assembly 21 is arranged. Without changing the total number of turns of the coil, this design is beneficial to reducing the projected area of the coil assembly 21 on the plane perpendicular to the first direction, so as to realize the miniaturization of the relay.

[0262] Furthermore, the size of the coil winding 211 in the second direction is less than or equal to the size of the coil winding 211 in the first direction. In this way, the coil winding 211 can reduce the occupation of space in the second direction and increase the space utilization rate in the first direction, making the layout of the coil winding 211 and the moving contact unit 10b more reasonable in the first direction, which is beneficial to the miniaturization of the relay.

[0263] It should be noted here that the technical features of the above-described embodiments can be combined arbitrarily to solve one or more problems.

[0264] For example, in an embodiment in which the coil assembly 21 of the electromagnetic system 20 includes at least two coil windings 211 arranged along a first direction, the electromagnetic system 20 and the moving contact unit 10b can be arranged along a second direction perpendicular to the first direction. Thus, in combination with an embodiment in which the moving contact unit 10b includes at least two moving contact components 13 arranged along the first direction and capable of being connected in parallel, the parallel branch formed by the coil winding 211 and the moving contact component 13 maintains the consistency of arrangement in the first direction, which is then conducive to improving space utilization, while increasing the magnetic driving force of the coil assembly 211 to ensure that sufficient driving force can be provided for multiple moving contact components 13, while reducing the occupied area of ​​the relay in a plane perpendicular to the first aspect. Therefore, a relay of this structure is miniaturized while taking into account a significant reduction in contact resistance, so as to meet usage requirements.

[0265] Since the electromagnetic system 20 and the moving contact unit 10b are arranged along the second direction, the electromagnetic system 20 can face each moving contact component 13 in the second direction and easily establish an assembly relationship and form a linkage with each moving contact component 13. This arrangement method is conducive to avoiding the electromagnetic system 20 and the moving contact unit 10b from occupying too much space in the first direction due to the staggered arrangement along the first direction, so that the size of the relay in the first direction is mainly determined by the moving contact unit 10b, so that the size in the first direction can be reasonably and conveniently controlled according to needs. In addition, this arrangement method also makes the distance between the driving end of the electromagnetic system 20 and each moving contact component 13 in the second direction closer and easier to reach consistency, which is conducive to reducing the required use. The length of the pushing mechanism 40 can be reduced, consumables and costs can be reduced, and deformation and breakage of the pushing mechanism 40 due to excessive length can be avoided. Since the distance between the driving end of the electromagnetic system 20 and each moving contact component 13 along the second direction can be easily consistent, it is beneficial to symmetrically arrange the pushing mechanism 40 between the electromagnetic system 20 and each moving contact component 13, so that the force of each moving contact component 13 is more uniform, the vibration or jitter of the contact point is reduced, the driving force applied by the pushing mechanism 40 is more balanced, the contact pressure of each moving contact component 13 is more balanced, and the contact resistance can be guaranteed to meet the predetermined requirements. It can also avoid greater local stress concentration of the pushing mechanism 40 and affect the mechanical life. In addition, it is also beneficial to standardized production and reduce production cycle and production cost.

[0266] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0267] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A relay, characterized in that: include: A moving contact unit, comprising at least two moving contact components arranged along a first direction and capable of being connected in parallel; The electromagnetic system is arranged along the second direction perpendicular to the first direction with the moving contact unit. The electromagnetic system includes a coil assembly and an armature assembly. The coil assembly includes at least two coil windings arranged along the first direction. When each of the coil windings is energized, they jointly drive the armature assembly to move. The armature assembly can drive all the moving contact assemblies to move.

2. The relay according to claim 1, characterized in that: A size of each of the coil windings in the second direction is smaller than or equal to a size of the coil winding in the first direction.

3. The relay according to claim 1 or 2, characterized in that: The armature assembly is located between the coil assembly and the moving contact unit along the second direction.

4. The relay according to claim 3, characterized in that: The armature assembly is capable of rotating about a rotation axis parallel to the first direction based on a change in polarity of the coil assembly.

5. The relay according to claim 3, characterized in that: The movement direction of each of the movable contact components is parallel to the second direction.

6. The relay according to claim 3, characterized in that: The relay also includes a pushing mechanism, which includes multiple groups of pushing cards arranged along the first direction. The multiple groups of pushing cards are all connected to the armature assembly and correspond to each of the moving contact assemblies respectively. The armature assembly can drive each of the moving contact assemblies to move through the multiple groups of pushing cards.

7. The relay according to claim 1, characterized in that: It also includes a lead-out unit corresponding to the moving contact unit, the lead-out unit includes a first static lead-out component and a second static lead-out component, the first static lead-out component and the second static lead-out component are respectively arranged on both sides of the moving contact unit along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; Each of the movable contact components is configured to be switchable between a first switch state and a second switch state under the drive of the armature component; Among them, in the first switch state, each of the moving contact components disconnects the electrical path between the first static lead-out component and the second static lead-out component; in the second switch state, each of the moving contact components conducts the electrical path between the first static lead-out component and the second static lead-out component.

8. The relay according to claim 1, characterized in that: At least one of the moving contact components is arranged with at least two parallel branches in a plane perpendicular to the first direction.

9. The relay according to claim 8, characterized in that: Each of the moving contact components includes two moving contacts, and the two moving contacts of the same moving contact component can contact or separate from each other under the drive of the armature component, wherein when the two moving contacts contact each other, they both constitute the parallel branch and conduct the electrical path between the first static lead-out component and the second static lead-out component, and when the two moving contacts separate from each other, the electrical path between the first static lead-out component and the second static lead-out component is disconnected.

10. The relay according to claim 9, characterized in that: In the same moving contact component, the two moving contacts are arranged along the second direction, and the moving contact has a fixed end and a swing end, wherein the fixed end of one of the moving contacts is fixed to the first static lead-out component, and the fixed end of the other moving contact is fixed to the second static lead-out component, and the two swing ends are respectively used to contact or separate from the fixed end of the other moving contact along the second direction.

11. The relay according to claim 9, characterized in that: In at least one of the moving contact components, the two moving contacts each include a plurality of flow guide branches and the flow guide branches on the two moving contacts correspond one to one, the plurality of flow guide branches are arranged along the first direction, and are configured to be connected in parallel when the first static lead-out component and the second static lead-out component are electrically conductive and to be connected in parallel with each of the flow guide branches on the other moving contact.

12. The relay according to claim 7, characterized in that: The number of the moving contact units and the lead-out units is at least two, and each of the moving contact units is arranged along the second direction. When each of the moving contact units is in the first switching state, it is electrically connected with the adjacent moving contact units respectively, so that among the two lead-out units corresponding to the two adjacent moving contact units, the first static lead-out component of one of the lead-out units and the second static lead-out component of the other lead-out unit are connected in series with each other; when each of the moving contact units is in the second switching state, each of the lead-out units is disconnected from each other.

13. The relay according to claim 12, characterized in that: The number of the moving contact units is two, namely, a first moving contact unit and a second moving contact unit; the number of the lead-out units is two, namely, a first lead-out unit and a second lead-out unit; The first moving contact unit is located between the armature assembly and the second moving contact unit, the first lead-out unit is arranged corresponding to the first moving contact unit, and the second lead-out unit is arranged corresponding to the second moving contact unit.

14. The relay according to claim 7, characterized in that: The first static lead-out component and the second static lead-out component each include a plurality of static lead-out parts arranged along the first direction, each of the static lead-out parts in the first static lead-out component and each of the static lead-out parts in the second static lead-out component respectively corresponds one-to-one to each of the moving contact components, and each of the moving contact components can open or disconnect the electrical path between the corresponding two static lead-out parts.

15. The relay according to claim 14, characterized in that: The relay further comprises a mounting seat, the moving contact unit is mounted in the mounting seat, and all the static lead-out parts extend out of the mounting seat along the third direction.

16. The relay according to claim 15, characterized in that The lead-out unit also includes a first external lead-out component and a second external lead-out component, and one end of each static lead-out component in the first static lead-out component extending from the mounting seat is connected to the first external lead-out component; one end of each static lead-out component in the second static lead-out component extending from the mounting seat is connected to the second external lead-out component.

17. The relay according to claim 14, characterized in that: The relay further includes a mounting seat, the moving contact unit is mounted in the mounting seat, and all the static lead-out members have connection terminals located outside the mounting seat, and the connection terminals are all located on the same side of the mounting seat in the second direction.

18. The relay according to claim 17, characterized in that: All of the connection terminals are located outside the outer wall surface of the mounting seat that is closer to the moving contact unit in the second direction; And / or, all of the connection terminals are arranged in a same plane perpendicular to the second direction.

19. The relay according to any one of claims 15 to 18, characterized in that: Each of the moving contact units includes two of the moving contact components; each of the first static lead-out components and each of the second static lead-out components includes two of the static lead-out parts; The mounting seat comprises a seat body and a first mounting plate; the first mounting plate is connected to the inner wall of the seat body, the first mounting plate separates the inner cavity of the seat body into a first mounting cavity and a second mounting cavity along the first direction, the first mounting cavity has a first mounting opening, the second mounting cavity has a second mounting opening, the first mounting opening and the second mounting opening are located at two ends of the mounting seat in the first direction; the inner cavity of the seat body further comprises a third mounting cavity connected to both the first mounting cavity and the second mounting cavity; the third mounting cavity has a third mounting opening, and the third mounting opening is located at one end of the mounting seat in the first direction; The two moving contact components can be installed from the first installation opening to the first installation cavity and from the second installation opening to the second installation cavity respectively; the third installation opening is for the electromagnetic system to be installed in the third installation cavity.

20. The relay according to claim 19, characterized in that The number of the moving contact units is two, namely, a first moving contact unit and a second moving contact unit; the number of the lead-out units is two, namely, a first lead-out unit and a second lead-out unit; The first moving contact unit and the second moving contact unit are arranged along the second direction, the first moving contact unit is located between the armature assembly and the second moving contact unit, the first lead-out unit is arranged corresponding to the first moving contact unit, and the second lead-out unit is arranged corresponding to the second moving contact unit; When the two moving contact units are in the first switching state, the two moving contact units are electrically connected to each other so that the first static lead-out component in the first lead-out unit and the second static lead-out component in the second lead-out unit are connected in series with each other; when the two moving contact units are in the second switching state, the two lead-out units are disconnected from each other.

21. The relay according to claim 20, characterized in that The two static lead-out pieces of each of the first static lead-out components are respectively a first static lead-out piece and a third static lead-out piece, and the two static lead-out pieces of each of the second static lead-out components are respectively a second static lead-out piece and a fourth static lead-out piece; In the first lead-out unit and the second lead-out unit, the connecting terminals of the first static lead-out piece and the third static lead-out piece of one of them are arranged between the connecting terminals of the first static lead-out piece and the third static lead-out piece of the other along the first direction, and the connecting terminals of the second static lead-out piece and the fourth static lead-out piece of one of them are arranged between the connecting terminals of the second static lead-out piece and the fourth static lead-out piece of the other along the first direction.

22. The relay according to claim 21, characterized in that In the first lead-out unit and the second lead-out unit, the connecting terminals of the two first static lead-out pieces are arranged adjacent to each other in the first direction, the connecting terminals of the two second static lead-out pieces are arranged adjacent to each other in the first direction, the connecting terminals of the two third static lead-out pieces are arranged adjacent to each other in the first direction; and the connecting terminals of the two fourth static lead-out pieces are arranged adjacent to each other in the first direction.

23. The relay according to claim 22, characterized in that It also includes an isolating member, which is relatively fixed to the mounting seat and electrically isolates the connecting terminals of the first lead-out unit and the second lead-out unit that are adjacent to each other in the first direction.

24. A power distribution device, characterized in that: Comprising a relay as described in any one of claims 1-23.

25. A vehicle, characterized in that: Comprising the power distribution device as claimed in claim 24.

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