Relay

Abstract

The invention relates to a relay which comprises a shell, a leading-out end assembly and an isolation structure, the leading-out end assembly comprises at least four leading-out ends, the at least four leading-out ends are suitable for forming at least three terminal sets, each terminal set comprises two leading-out ends suitable for being electrically connected or disconnected with each other, each leading-out end is exposed out of a first side wall, and the isolation structure is arranged on the first side wall. Orthographic projections of the leading-out ends on the outer wall surface of the first side wall are mutually spaced; the isolation structure is fixed relative to the shell, at least part of the isolation structure protrudes out of the outer wall face of the first side wall, and the isolation structure is used for electrically isolating at least part of the adjacent leading-out ends. According to the relay, the occupied area when the relay is connected with a circuit board can be reduced while the electrical isolation performance is considered.

Description

Technical Field

[0001] This application relates to the technical field of distribution control, and particularly to a relay. Background Art

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

[0003] In related technologies, different terminals of the relay are usually arranged on different sides of the housing to meet the requirements of electrical isolation. This structure occupies a large space, is not conducive to the miniaturization of the relay, and is not easy to be electrically connected to an external circuit board. And when different terminals of the relay are arranged on the same side of the housing, it is also necessary to increase the electrical distance and creepage distance by increasing the distance between the terminals from each other. As a result, when the terminals are electrically connected to the external circuit board, it occupies a large area on the circuit board, and this way of increasing the distance between the terminals from each other is also not conducive to the miniaturization of the relay. Summary of the Invention

[0004] Based on this, it is necessary to provide a relay aiming at the problem of how to balance the electrical isolation performance while reducing the occupied area when connecting to the circuit board.

[0005] This application provides a relay, including:

[0006] A housing having a first side wall;

[0007] A lead-out terminal assembly including at least four lead-out terminals. At least four of the lead-out terminals are adapted to form at least three terminal groups. Each terminal group includes two lead-out terminals that are adapted to be electrically connected or disconnected from each other. Each of the lead-out terminals is exposed outside the first side wall, and the orthographic projections of each of the lead-out terminals on the outer wall surface of the first side wall are spaced apart from each other;

[0008] An isolation structure fixed relative to the housing. The isolation structure at least partially protrudes from the outer wall surface of the first side wall and is used to electrically isolate at least some of the adjacent lead-out terminals.

[0009] In the above relay, in each lead terminal assembly, at least four lead terminals are configured to form at least three terminal groups, that is, some of the terminal groups share the same lead terminals. Compared with each terminal group being separately provided with two lead terminals for respectively accessing and leading out current, this design endows the lead terminals with more usage functions. While being able to be used to connect circuits with more complex control logics, it can save space occupancy and the complexity of external connections. Since each lead terminal is exposed outside the first sidewall of the housing, it is convenient to connect with an external circuit board. Since the orthographic projections of the lead terminals on the outer wall surface of the first sidewall are spaced apart from each other, the lead terminals do not overlap in the direction perpendicular to the outer wall surface of the first sidewall. Compared with the problem of space waste and poor electrical isolation caused by the stacked arrangement of the lead terminals in the direction perpendicular to the outer wall surface of the first sidewall, the technical solution of the present application can reduce the probability of such problems occurring. Also, since the isolation structure protrudes from the outer wall surface of the first sidewall and is used to electrically isolate at least some of the adjacent lead terminals, the adjacent lead terminals can be arranged as close as possible, making the arrangement of the adjacent lead terminals on the outer wall surface of the first sidewall more compact, so as to facilitate space saving and reduce the occupied area when the relay is connected to the external circuit board.

[0010] In some embodiments, the surface of each lead terminal facing away from the first sidewall forms a connection surface for external connection; the connection surfaces are located in the same plane. Thus, it is convenient to connect the connection surfaces of the lead terminals of the relay to external devices such as an external circuit board.

[0011] In some embodiments, each lead terminal is in a sheet shape and parallel to the outer wall surface of the first sidewall. In this way, each lead terminal has a relatively large connection area, which can facilitate external connection, and ensure a relatively large current-carrying area, reduce heat generation, making the lead terminal assembly more suitable for high-voltage or high-current usage environments. In addition, the sheet-shaped lead terminals can reduce the space occupancy in the direction perpendicular to the first sidewall, and the technical solution of arranging each lead terminal parallel to the outer wall surface of the first sidewall can make the layout of each lead terminal neat relative to the first sidewall, thus facilitating the external connection of the relay and improving the connection reliability. Moreover, this structure is more easily adapted to a limited installation space, such as the narrow battery compartment space in a vehicle; in addition, it is also beneficial to support the compact side-by-side installation of multiple relays.

[0012] In some embodiments, a contact unit is further included. The contact unit includes at least two moving contact components; each of the moving contact components is linked with each other and each of the moving contact components can be switched between a conducting state and a disconnecting state, so that there are terminal groups with opposite on-off states in the lead-out terminal assembly. Compared with separately configuring a driving part for power input for each moving contact component, this technical solution of linking each moving contact component with each other can simplify the structure of the driving part; in addition, this embodiment can meet the on-off control requirements of different circuits by using terminal groups with opposite on-off states.

[0013] In some embodiments, the lead-out terminal assembly has at least one terminal group composed of four of the lead-out terminals. The four lead-out terminals in the terminal group are adapted to form three terminal groups, wherein the on-off states of two of the terminal groups are the same and are opposite to the on-off state of the other terminal group. In this way, there are multiple possibilities for the on-off control logic of the three terminal groups, so as to enrich the application scenarios of the relay and achieve on-off control in different circuits.

[0014] In some embodiments, the lead-out terminal assembly has at least two of the terminal groups, and the lead-out terminals included in any two of the terminal groups are independent of each other. Since there are at least two terminal groups, the lead-out terminal assembly can provide more control combinations and adapt to external circuits with more complex control logic, and has stronger applicability.

[0015] In some embodiments, in the same terminal group, the three terminal groups formed by the four lead-out terminals are respectively a first terminal group, a second terminal group and a third terminal group;

[0016] The lead-out terminal assembly has at least two of the terminal groups; each of the terminal groups shares two of the lead-out terminals, and the two shared lead-out terminals are respectively a first terminal and a second terminal;

[0017] In each terminal group, the first terminal is adapted to form the first terminal group with one of the other two lead-out terminals except the second terminal, the second terminal is adapted to form the second terminal group with the other of the other two lead-out terminals except the first terminal, and the other two lead-out terminals except the first terminal and the second terminal in the same terminal group are adapted to form the third terminal group. In this embodiment, more terminal groups are constructed by sharing the first terminal and the second terminal, so that more control combinations can be provided without increasing the number of lead-out terminals, enriching the application scenarios of the relay while maintaining the miniaturization of the relay.

[0018] In some embodiments, the relay includes at least two of the lead terminal assemblies; the lead terminal assemblies are arranged in a first direction parallel to the first side wall, each lead of each lead terminal assembly corresponds to each lead of the other lead terminal assemblies one by one, and among different lead terminal assemblies, the corresponding leads are adapted to be externally connected as the common terminals of the parallel switches in the relay. By providing at least two lead terminal assemblies, parallel switches (equivalent to moving contact assemblies) can be provided inside the relay corresponding to the lead terminal assemblies, thereby reducing the overall contact resistance of the relay, making the relay more suitable for high-voltage or high-current application scenarios, reducing the occurrence probability of relay conduction failure, and improving the reliability of the relay.

[0019] In some embodiments, the contact unit includes static contact assemblies corresponding to the moving contact assemblies one by one; the static contact assemblies are fixed relative to the housing, and each static contact assembly includes two static contact pieces respectively for inputting current and outputting current, and each static contact piece is respectively connected to one of the lead terminals; the moving contact assembly is used to disconnect or conduct the electrical path between the corresponding two static contact pieces. In this embodiment, the static contact assemblies can be used to conduct or disconnect the corresponding lead terminals under the on-off control of the corresponding moving contact assemblies, so as to meet the use requirements of the relay. Moreover, the static contact assemblies are fixed relative to the housing, so that the static contact assemblies are not likely to become loose during the use of the relay, thereby ensuring the stability of each lead terminal and ensuring the reliability of the electrical connection.

[0020] In some embodiments, in the contact unit, the on-off states of the static contact assemblies are the same, and when each moving contact assembly disconnects the electrical path between the corresponding two static contact pieces, adjacent two moving contact assemblies conduct the electrical path between one of the static contact pieces of the corresponding adjacent two static contact assemblies. In this way, the series-parallel switching can be realized by controlling the on-off of each moving contact assembly, so that the relay has the series-parallel switching function to adapt to some special use scenarios, such as being applied to the battery management system of an automobile to optimize the charge and discharge functions of the battery pack.

[0021] In some embodiments, in the contact unit, the static contact components are arranged in a second direction intersecting with the first side wall, and the moving contact components are arranged in the second direction. In this way, the arrangement directions of the static contact components and the moving contact components are the same, which facilitates arranging the static contact components adjacent to the correspondingly arranged moving contact components, thereby improving the layout compactness between them, realizing the miniaturization of the relay, and reducing the amount of conductive material consumed for electrically leading the static contact components out of the housing, thus reducing the cost. Since the arrangement directions of the static contact components and the moving contact components are both in the second direction, the installation directions of the static contact components and the moving contact components are generally parallel to the first side wall to ensure that the static contact components and the moving contact components can all obtain support. On this basis, the first side wall can be used to form one side of the housing opening (for loading the static contact components and the moving contact components). The static contact components are connected to the first side wall from the opening, and the shapes and sizes of the static contact components and the lead-out ends can be flexibly set according to needs, without being restricted by the perforations on the first side wall because they need to vertically extend out of the first side wall. Therefore, the areas of the static contact components and the lead-out ends can be increased according to needs to adaptively increase the connection area of the lead-out ends, thereby realizing reliable connection and reducing heat generation.

[0022] In some embodiments, each moving contact component includes a moving contact piece. One end of the moving contact piece is fixed to one of the corresponding static contact pieces, and the other end is used for electrically conducting or disconnecting from another corresponding static contact piece. This moving contact piece adopts a swinging manner to achieve on-off control, with a simple structure and small occupied space, which is beneficial to the miniaturization of the relay.

[0023] In some embodiments, when the moving contact piece in each moving contact component disconnects from the static contact piece in the corresponding static contact component, at least one moving contact piece in the moving contact component is electrically conducted with one static contact piece in the adjacent static contact component to conduct the electrical path between one static contact piece in each of the adjacent two static contact components.

[0024] In some embodiments, each moving contact component includes two moving contact pieces. The fixed ends of the two moving contact pieces are respectively fixed to the two static contact pieces, and the movable ends of the two moving contact pieces are respectively used for electrically conducting or disconnecting from another static contact piece. In this way, the two moving contact pieces in the same moving contact component realize a parallel structure with a simple structure to reduce the contact resistance, and can also use the electromagnetic force generated by each other when passing current to increase their contact pressure and the ability to resist high-fault currents, so that the relay product can be applied to high-voltage or high-current application environments.

[0025] In some embodiments, the second direction is perpendicular to the first sidewall; the movement direction of the moving contact member in the moving contact assembly is parallel to the second direction. Thus, in the second direction, the moving contact member can obtain sufficient movement space to meet the requirements of the contact action, without the need to provide a movement space for the contact action of the moving contact member in the direction perpendicular to the second direction. Therefore, it is beneficial to arrange the moving contact member in the space in the direction perpendicular to the second direction (such as the first direction or the third direction), so that the arrangement of the moving contact members is compact, which is conducive to realizing miniaturized design, and at the same time, the movement space required for the contact action is ensured.

[0026] In some embodiments, in each of the contact units, the number of the static contact assembly and the moving contact assembly is two. In this way, by switching the on-off states of the two moving contact assemblies, the electrical path between the lead-out terminals connected to the static contact assembly is disconnected or conducted, so as to facilitate configuring the terminal group such that the on-off states of two of the terminal groups are the same and opposite to the on-off state of the other terminal group. Thus, there are multiple possibilities for the on-off control logic of the three terminal groups, so as to enrich the application scenarios of the relay and realize on-off control in different circuits.

[0027] In some embodiments, the number of the lead-out terminal assemblies and the contact units is two; each of the lead-out terminal assemblies is arranged in a first direction perpendicular to the second direction and parallel to the first sidewall. The lead-out terminals of the two lead-out terminal assemblies correspond to each other one by one, and among the two lead-out terminal assemblies, the corresponding lead-out terminals are adapted to be externally connected as the common terminals of the parallel switches in the relay. By arranging each lead-out terminal assembly in the first direction, it is to meet the need for the corresponding moving contact assembly in each contact unit to input or output current through the static contact assembly. Moreover, when installing the contact unit, the number of the lead-out terminal assemblies and the moving contact assemblies is two, which can provide a structural basis for installing from both ends of the mounting seat of the housing in the first direction, so that the mounting seat only needs to open grooves at the positions corresponding to the two lead-out terminal assemblies respectively, so as to reduce the depth of each groove on the mounting seat, which is beneficial to maintaining the structural strength of the mounting seat and reducing the probability of the mounting seat being deformed under stress. Correspondingly, since the lead-out terminals of the two lead-out terminal assemblies correspond to each other one by one, and among the two lead-out terminal assemblies, the corresponding lead-out terminals are adapted to be externally connected as the common terminals of the parallel switches in the relay, parallel moving contact assemblies can be arranged inside the relay corresponding to each lead-out terminal assembly, thereby reducing the overall contact resistance of the relay, making the relay more suitable for application scenarios with high voltage or high current, and reducing the occurrence probability of the relay conduction failure and improving the reliability of the relay.

[0028] In some embodiments, in each of the contact units, for one of the stationary contact assemblies, the two lead-out ends corresponding thereto are respectively a first lead-out end and a second lead-out end, and for the other stationary contact assembly, the two lead-out ends corresponding thereto are respectively a third lead-out end and a fourth lead-out end; the first lead-out end and the second lead-out end are arranged along a third direction; the third lead-out end and the fourth lead-out end are arranged along the third direction; the first lead-out end and the third lead-out end are arranged along the first direction; the second lead-out end and the fourth lead-out end are arranged along the first direction; the third direction is perpendicular to the first direction and the second direction; in the two lead-out end assemblies, the two third lead-out ends are arranged along the first direction and are located between the two first lead-out ends along the first direction, and the two fourth lead-out ends are arranged along the first direction and are located between the two second lead-out ends along the first direction. In this embodiment, by reasonably arranging the positions of the lead-out ends, the lead-out ends can be conveniently connected to the corresponding stationary contact members, and while meeting the electrical connection requirements of the relay, the lead-out ends are arranged at positions adjacent to the stationary contact members to which they are connected, so as to reduce the usage amount of the conductive material of the lead-out ends.

[0029] In some embodiments, the housing includes a mounting base, the mounting base has a first mounting cavity and a second mounting cavity arranged along the first direction, and the moving contact assemblies of the two contact units can be respectively inserted into the first mounting cavity and the second mounting cavity from the two ends of the mounting base in the first direction, and each stationary contact member extends out of the housing along the third direction and is bent along the second direction to be connected to the corresponding lead-out end. In this embodiment, the moving contact assemblies of the two contact units can be respectively inserted into the first mounting cavity and the second mounting cavity from the two ends of the mounting base in the first direction. This assembly method is simple, and the mounting base only needs to set the installation space for the relevant structure at the corresponding positions and without reserving space at other positions under the condition of meeting the usage requirements of the relay, so as to ensure the overall structural strength of the mounting base, make the mounting base not easily deformed, and improve the reliability of the relay in use.

[0030] In some embodiments, a groove for each static contact member to extend out is formed on the side wall of the mounting base. Each groove extends to the inner wall surface and the outer wall surface of the mounting base, and respectively forms an inner notch and an outer notch on the inner wall surface and the outer wall surface, and the depth of the inner notch of the groove communicated with the first mounting cavity is less than or equal to 1 / 3 of the depth of the first mounting cavity, and the depth of the inner notch of the groove communicated with the second mounting cavity is less than or equal to 1 / 3 of the depth of the second mounting cavity. Controlling the grooving depth of each groove is beneficial to maintaining the structural strength of the mounting base, avoiding that at least one side of the side wall of the mounting base becomes an isolated and unsupported structure due to over-deep grooving, thereby avoiding affecting the overall structural strength of the mounting base and improving the use reliability of the relay. Therefore, adopting the solution of this embodiment can improve the structural strength of the side wall of the mounting base and achieve physical isolation and independent stress bearing for different contact units. The mounting base is not easily deformed, thereby enhancing the reliability of the relay.

[0031] In some embodiments, the two lead-out end assemblies are arranged in a mirror image with a plane perpendicular to the first direction as the symmetry plane. The setting of the mirror symmetry structure is beneficial to simplifying the processing difficulty and installation difficulty of each component, and this mirror symmetry 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.

[0032] In some embodiments, the isolation structure includes four partition members, each partition member is fixed relative to the housing, and is respectively used for electrically isolating two lead-out ends that are adjacent to each other in different terminal groups and are adapted to be externally connected to a circuit along the first direction. In this embodiment, the partition members are used to increase the creepage distance between the corresponding adjacent two lead-out ends to improve the electrical isolation performance.

[0033] In some embodiments, the isolation structure further includes a partition wall protruding from the outer wall surface of the first side wall; the partition wall extends along the first direction and is located between the two lead-out ends of each terminal group. In this way, the partition wall increases the creepage distance between the two lead-out ends of each terminal group, thereby improving the electrical isolation effect between the lead-out ends.

[0034] In some embodiments, the isolation structure includes a partition wall integrally formed on the first side wall. The partition wall protrudes from the outer wall surface of the first side wall and can electrically isolate at least two adjacent lead-out terminals. In this embodiment, since the partition wall is integrally formed with the first side wall, the connection between the partition wall and the first side wall is stable, and there is no need to use other connecting parts to connect the two, so the assembly process can be simplified. Since the partition wall protrudes from the outer wall surface of the first side wall and can electrically isolate at least two adjacent lead-out terminals, in this embodiment, the partition wall protruding from the outer wall surface of the first side wall can increase the creepage distance between at least two adjacent lead-out terminals, which is beneficial to improving the electrical isolation effect between the lead-out terminals.

[0035] In some embodiments, the partition wall is provided between any two adjacent lead-out terminals;

[0036] And / or, the partition wall is provided with a partition groove, and at least two parallel partition walls are separated by the partition groove. In this embodiment, since the partition wall is provided between any two adjacent lead-out terminals, a good electrical isolation effect is achieved between any two adjacent lead-out terminals, so that the adjacent lead-out terminals can be arranged closer to each other, which is beneficial to the miniaturization of the relay. Since the partition wall is separated by the partition groove into partition walls, the creepage distance between the adjacent lead-out terminals is further increased, so the electrical isolation performance can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic structural diagram of a relay in an embodiment of the present application.

[0038] Figure 2 It is a schematic structural diagram of a contact unit and a lead-out terminal assembly of a relay in an embodiment.

[0039] Figure 3 It is a schematic diagram of the corresponding relationship between the lead-out terminals in two terminal groups when the lead-out terminal assembly of a relay in another embodiment of the present application has two terminal groups, and the lead-out terminals connected by the dotted line represent the shared lead-out terminals.

[0040] Figure 4 It is a schematic circuit diagram of a relay in an embodiment of the present application applied to a vehicle power distribution system.

[0041] Figure 5 It is a schematic three-dimensional structure diagram of a relay in another embodiment of the present application.

[0042] Figure 6 It is an exploded structural diagram of a relay in an embodiment of the present application.

[0043] Figure 7 For the present application Figure 6Schematic structural diagram of the electromagnetic system and the contact unit assembled into the mounting base in the shown relay.

[0044] Figure 8 Partial structural schematic diagram of a relay according to an embodiment of the present application.

[0045] Figure 9 For Figure 8 Top view schematic diagram of the partial structure of the shown relay.

[0046] Figure 10 Schematic structural diagram of the moving contact of the contact unit in a relay according to an embodiment.

[0047] Figure 11 Top view schematic diagram of the electromagnetic system and the contact unit assembled into the mounting base in a relay according to an embodiment.

[0048] Figure 12 Cross-sectional structural schematic diagram of the relay according to an embodiment of the present application along Figure 11 the I-I line in

[0049] Figure 13 Schematic structural diagram of the mounting base of the housing in a relay according to an embodiment of the present application.

[0050] Figure 14 For Figure 13 Schematic structural diagram of another view angle of the mounting base of the shown relay.

[0051] Figure 15 Schematic structural diagram of a first partition member provided between the first stationary contact and the third stationary contact in a relay according to an embodiment of the present application.

[0052] Figure 16 For Figure 15 Exploded view schematic diagram of the first stationary contact and the first partition member of the shown relay.

[0053] Figure 17 Schematic structural diagram of a second partition member provided between the second stationary contact and the fourth stationary contact in a relay according to an embodiment of the present application.

[0054] Figure 18 For Figure 17 Exploded view schematic diagram of the fourth stationary contact and the second partition member of the shown relay.

[0055] Reference numerals:

[0056] 100, housing; 100a, first side wall; 110, mounting base; 111, first mounting cavity; 112, second mounting cavity; 113, third mounting cavity; 1101, base body; 1101a, side wall portion; 1101b, bottom wall portion; 1102, first mounting plate; 1103, second mounting plate; 120, mounting cover; C1, first groove; C2, second groove; C3, third groove; C4, fourth groove; C5, fifth groove; C6, sixth groove; C7, seventh groove; C8, eighth groove; 200, lead-out end assembly; 2001, first lead-out end assembly; 2002, second lead-out end assembly; 201, first lead-out end; 202, second lead-out end; 203, third lead-out end; 204, fourth lead-out end; 200a, first terminal group; 200b, second terminal group; 200c, third terminal group; D1, first terminal; D2, second terminal;

[0057] D3, third terminal; D4, fourth terminal; D5, fifth terminal; D6, sixth terminal; D7, seventh terminal; D8, eighth terminal; 300, isolation structure; 301, partition wall; 400, contact unit; 400a, moving contact assembly; 401, first moving contact assembly; 402, second moving contact assembly; 400b, static contact assembly; 403, first static contact assembly; 404, second static contact assembly; 4031, first static contact piece; 4032, second static contact piece; 4041, third static contact piece; 4042, fourth static contact piece; P1, first static contact piece; P2, second static contact piece; P3, third static contact piece; P4, fourth static contact piece; P5, fifth static contact piece; P6, sixth static contact piece; P7, seventh static contact piece; P8, eighth static contact piece; 410, moving contact piece; 411, fixed end; 412, movable end; 413, diversion branch; 414, slit; 410a, static contact point; 410b, moving contact point; 4011, first moving contact piece; 4021, second moving contact piece; 500, electromagnetic system; 510, coil assembly; 511, coil winding; 520, armature assembly; 521, first connecting arm; 522, second connecting arm; 520a, rotating shaft; 520b, mounting bracket; 600, pushing mechanism; 610, first group of pushing cards; 611, first pushing card; 620, second group of pushing cards; 621, second pushing card; 10, first partition member; 10a, first receiving groove; 11, first retaining wall; 12, second retaining wall; 13, third retaining wall; 20, second partition member; 20a, second receiving groove; 21, fourth retaining wall; 22, fifth retaining wall; 23, sixth retaining wall; 30, third partition member; 40, fourth partition member; S, clamping portion; SC, clamping groove. Detailed implementation manner

[0058] To make the above objects, features, and advantages of the present application more apparent and understandable, the following describes the specific embodiments of the present application in detail 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] Refer to Figure 1 As shown, an embodiment of the present application provides a relay, which includes a housing 100 and a lead-out terminal assembly 200. The lead-out terminal assembly 200 includes at least four lead-out terminals, such as Figure 1 the first lead-out terminal 201, the second lead-out terminal 202, the third lead-out terminal 203, and the fourth lead-out terminal 204 shown, and at least four lead-out terminals are adapted to form at least three terminal groups, and each terminal group includes two lead-out terminals that are adapted to be electrically connected or disconnected from each other, so as to Figure 1In the layout shown, in one possible example, the first lead-out terminal 201, the second lead-out terminal 202, the third lead-out terminal 203, and the fourth lead-out terminal 204, and the first lead-out terminal 201 and the third lead-out terminal 203 can respectively form three terminal groups capable of establishing independent circuits. Of course, it is worth noting that the first lead-out terminal 201 and the third lead-out terminal 203 shared by different terminal groups are only allowed to be used in one of the terminal groups at a time. For example, when the first lead-out terminal 201 is electrically connected to the second lead-out terminal 202, its electrical connection with the third lead-out terminal 203 needs to be disconnected. Similarly, when the third lead-out terminal 203 is electrically connected to the fourth lead-out terminal 204, its electrical connection with the first lead-out terminal 201 needs to be disconnected.

[0063] Each lead-out terminal is exposed outside the same side wall of the housing 100 (hereinafter referred to as the "first side wall 100a"), so as to facilitate connection with an external circuit board. The orthographic projections of the lead-out terminals on the outer wall surface of the first side wall 100a are spaced apart from each other. It can be understood that the orthographic projection of the lead-out terminal on the outer wall surface of the first side wall 100a refers to the projection of the lead-out terminal along the direction perpendicular to the outer wall surface of the first side wall 100a. Therefore, the lead-out terminals do not overlap with each other in the direction perpendicular to the outer wall surface of the first side wall 100a. Compared with the problem of space waste and poor electrical isolation caused by the stacked arrangement of the lead-out terminals on the outer wall surface perpendicular to the first side wall 100a, the technical solution of the present application can reduce the probability of such problems.

[0064] In the present embodiment, since the number of terminal groups formed by the lead-out terminals in the lead-out terminal assembly is large, and each terminal group may be adapted to different working conditions, it is necessary to impose reliable electrical isolation requirements on each lead-out terminal so that reliable electrical isolation can be formed between the different working conditions matched by each terminal group. For this reason, in the present embodiment, the relay further includes an isolation structure 300. The isolation structure 300 is fixed relative to the housing 100, protrudes from the outer wall surface of the first side wall 100a, and is used to electrically isolate at least some of the adjacent lead-out terminals. In the present application, electrical isolation means increasing the creepage distance rather than complete isolation in space. Since in the relay of the present application embodiment, the isolation structure 300 protrudes from the outer wall surface of the first side wall 100a and increases the creepage distance between at least some adjacent lead-out terminals, the electrical isolation effect can be improved. Therefore, the adjacent lead-out terminals can be arranged as close as possible, so that the adjacent lead-out terminals are arranged more compactly on the outer wall surface of the first side wall 100a, which is beneficial to saving space and reducing the occupied area when the relay is connected to an external circuit board.

[0065] For the sake of easy understanding, the surface of the lead-out terminal for external connection (such as connection to an external circuit board) is hereinafter referred to as the "connection surface".

[0066] Continue to combine Figure 1As shown, a connection surface is formed on the side of each lead away from the first side wall 100a, and these connection surfaces are located in the same plane, thus facilitating the connection of the connection surfaces of the leads of the relay to external devices such as an external circuit board. In this embodiment, the side of each lead away from the first side wall 100a can also be understood as the side of each lead that faces the same direction as the outer wall surface of the first side wall 100a.

[0067] In some embodiments, each lead is in a sheet shape and parallel to the outer wall surface of the first side wall 100a. In this way, each lead has a relatively large connection area, which can facilitate external connection, ensure a relatively large current-carrying area, reduce heat generation, and make the lead assembly 200 more suitable for use in high-voltage or high-current environments. In addition, the sheet-shaped leads can reduce the space occupied in the direction perpendicular to the first side wall 100a, and this technical solution of arranging the leads parallel to the outer wall surface of the first side wall 100a can make the layout of the leads relative to the first side wall 100a neat, thus facilitating the external connection of the relay and improving the connection reliability. Moreover, this structure is easier to adapt to a limited installation space, such as the narrow battery compartment space in a vehicle; in addition, it is also beneficial to support the compact side-by-side installation of multiple relays.

[0068] Taking Figure 1 the perspective to establish a three-dimensional rectangular coordinate system, X, Y, and Z are the first direction, the second direction, and the third direction respectively, and the first direction, the second direction, and the third direction are perpendicular to each other pairwise. Among them, both the first direction and the third direction are parallel to the outer wall surface of the first side wall 100a, and the second direction is perpendicular to the outer wall surface of the first side wall 100a.

[0069] The lead assembly 200 includes four leads, namely a first lead 201, a second lead 202, a third lead 203, and a fourth lead 204. Among them, the first lead 201 and the third lead 203 are arranged along the first direction, the second lead 202 and the fourth lead 204 are arranged along the first direction, the first lead 201 and the second lead 202 are arranged along the third direction, and the second lead 202 and the fourth lead 204 are arranged along the third direction.

[0070] For the convenience of description, any two leads that are adapted to be electrically connected or disconnected from each other are called a "terminal group". It should be noted that one of the two leads in the same terminal group is used to input current, and the other lead is used to output current, so as to adapt to the relay to control the circuit it is connected to.

[0071] The isolation structure 300 includes a partition wall 301 integrally formed on the first side wall 100a. The partition wall 301 protrudes from the outer wall surface of the first side wall 100a and can electrically isolate at least two adjacent lead-out ends. In this embodiment, since the partition wall 301 is integrally formed with the first side wall 100a, the connection between the partition wall 301 and the first side wall 100a is stable, and there is no need to use other connecting parts to connect the two, so the assembly process can be simplified. Since the partition wall 301 protrudes from the outer wall surface of the first side wall 100a and can electrically isolate at least two adjacent lead-out ends, in this embodiment, the partition wall 301 protruding from the outer wall surface of the first side wall 100a can increase the creepage distance between at least two adjacent lead-out ends, which is beneficial to improving the electrical isolation effect between the lead-out ends.

[0072] The partition wall 301 can be located between the first lead-out end 201 and the second lead-out end 202 to electrically isolate the first lead-out end 201 and the second lead-out end 202, or can be located between the third lead-out end 203 and the fourth lead-out end 204 to electrically isolate the third lead-out end 203 and the fourth lead-out end 204. In some embodiments, a part of the partition wall 301 is located between the first lead-out end 201 and the second lead-out end 202, and another part is located between the third lead-out end 203 and the fourth lead-out end 204. In this way, the partition wall 301 can increase the creepage distance between the first lead-out end 201 and the second lead-out end 202, and between the third lead-out end 203 and the fourth lead-out end 204 at the same time, so as to improve the electrical isolation performance.

[0073] It should be noted that the partition wall 301 can also be located at other positions. For example, the partition wall 301 is located between the first lead-out end 201 and the third lead-out end 203. For another example, the partition wall 301 is located between the second lead-out end 202 and the fourth lead-out end 204.

[0074] In some embodiments, the isolation structure 300 includes a plurality of partition walls 301. The plurality of partition walls 301 can be independently arranged or integrally formed. The number and arrangement position of the partition walls 301 are not limited herein, as long as the partition walls 301 can increase the creepage distance between the lead-out ends on both sides of them.

[0075] Furthermore, a partition wall 301 is provided between any two adjacent lead-out ends. In this way, there is a good electrical isolation effect between any two adjacent lead-out ends, so that the adjacent lead-out ends can be arranged closer to each other, which is beneficial to the miniaturization of the relay.

[0076] In some embodiments, the partition wall 301 is provided with partition grooves (not shown in the figure), and at least two parallel partition walls are separated by the partition grooves. Due to the partition walls by which the partition wall 301 is separated, the creepage distance between the adjacent lead-out ends is further increased, and the electrical isolation performance is improved.

[0077] It should be noted that, in the embodiments of the present application, some lead-out ends can be shared between one terminal group and another terminal group, so that more terminal groups can be formed, thereby meeting the switching control requirements of more scenarios.

[0078] In some embodiments, at least four lead-out ends are adapted to form at least three terminal groups, that is, some of the terminal groups share the same lead-out ends. Compared with each terminal group being respectively provided with two lead-out ends for respectively connecting and leading out current, this design endows the lead-out ends with more usage functions. While being able to be used to connect circuits with more complex control logics, it can save space occupancy and the complexity of external connections.

[0079] For example, in combination with Figure 2 As shown, the first lead-out end 201 and the fourth lead-out end 204 form a terminal group, the second lead-out end 202 and the third lead-out end 203 form another terminal group, and the third lead-out end 203 and the fourth lead-out end 204 form a third terminal group. The lead-out end assembly 200 is a component for the external electrical connection of the relay, and the on-off of the terminal groups in the lead-out end assembly 200 can be configured according to the usage function of the relay.

[0080] For example, in some embodiments, the lead-out end assembly 200 has at least terminal groups with opposite on-off states. That is to say, in the lead-out end assembly 200, there is at least one situation where when one terminal group is in the on state (i.e., current can flow through this terminal group), another terminal group is in the off state (i.e., current cannot flow through this terminal group). However, it should be understood that this embodiment does not exclude the situation where all terminal groups can be adjusted to be in the off state. In this embodiment, the on-off control requirements of different circuits can be met by using terminal groups with opposite on-off states, thereby enriching the application scenarios of the relay.

[0081] Taking the first lead terminal 201 and the fourth lead terminal 204 as a terminal group, the second lead terminal 202 and the third lead terminal 203 as another terminal group, and the third lead terminal 203 and the fourth lead terminal 204 as a third terminal group as an example. In some embodiments, when the electrical path between the first lead terminal 201 and the fourth lead terminal 204 is conducting, the electrical path between the second lead terminal 202 and the third lead terminal 203 is conducting, and the electrical path between the third lead terminal 203 and the fourth lead terminal 204 is disconnected; correspondingly, when the electrical path between the first lead terminal 201 and the fourth lead terminal 204 is disconnected, the electrical path between the second lead terminal 202 and the third lead terminal 203 is also disconnected, and the electrical path between the third lead terminal 203 and the fourth lead terminal 204 is conducting.

[0082] Continuing to combine Figure 2 As shown, the lead terminal assembly 200 has at least one terminal group composed of four lead terminals. The four lead terminals in the terminal group are adapted to form three terminal groups.

[0083] For ease of description, the terminal group formed by the first lead terminal 201 and the fourth lead terminal 204 is referred to as the "first terminal group 200a", the terminal group formed by the second lead terminal 202 and the third lead terminal 203 is referred to as the "second terminal group 200b", and the terminal group formed by the third lead terminal 203 and the fourth lead terminal 204 is referred to as the "third terminal group 200c".

[0084] In some embodiments, the on / off states of two of the terminal groups are the same and opposite to the on / off state of the other terminal group. Thus, there are multiple possibilities for the on / off control logic of the three terminal groups to enrich the application scenarios of the relay and achieve on / off control in different circuits. For example, the on / off states of the first terminal group 200a and the second terminal group 200b are the same and opposite to the on / off state of the third terminal group 200c. That is to say, when the first terminal group 200a and the second terminal group 200b are both in the conducting state, the third terminal group 200c is in the disconnected state; correspondingly, when the first terminal group 200a and the second terminal group 200b are both in the disconnected state, the third terminal group 200c is in the conducting state.

[0085] Combining Figure 2As shown, the on / off states of the first terminal group 200a and the second terminal group 200b are the same, and are opposite to the on / off state of the third terminal group 200c. Therefore, when the first terminal group 200a and the second terminal group 200b are both in the on state (i.e., the electrical path between the first lead-out end 201 and the fourth lead-out end 204 is conducting, and the electrical path between the second lead-out end 202 and the third lead-out end 203 is conducting), the electrical path between the third lead-out end 203 and the fourth lead-out end 204 is disconnected, that is, the third terminal group 200c is in the off state. Correspondingly, when the first terminal group 200a and the second terminal group 200b are both in the off state (i.e., the electrical path between the first lead-out end 201 and the fourth lead-out end 204 is disconnected, and the electrical path between the second lead-out end 202 and the third lead-out end 203 is disconnected), the electrical path between the third lead-out end 203 and the fourth lead-out end 204 is conducting, that is, the third terminal group 200c is in the on state.

[0086] It should be noted here that the on / off of the first terminal group 200a, the second terminal group 200b, and the third terminal group 200c can be realized by the contact unit 400 provided in the relay and matched with the lead-out end assembly 200.

[0087] For example, in some embodiments, the relay further includes a contact unit 400 correspondingly arranged with the lead-out end assembly 200, and the contact unit 400 is adapted to control the electrical conduction or disconnection between two lead-out ends in each terminal group. In this embodiment, the contact unit 400 is used to control the on / off of the electrical path between two lead-out ends in each terminal group to achieve the switching control effect of the relay in the corresponding circuit. Understandably, when the contact unit 400 controls the electrical conduction between two lead-out ends in a terminal group, it means that current can flow from one of the two lead-out ends to the other. At this time, these two lead-out ends can be understood as the current input end and the current output end for the relay. Correspondingly, when the contact unit 400 controls the electrical disconnection between two lead-out ends in a terminal group, the electrical path between the two lead-out ends is in the off state and no current flows between them.

[0088] The contact unit 400 includes at least two moving contact assemblies 400a, and each moving contact assembly 400a is linked with each other and each moving contact assembly 400a can switch between the on state and the off state. In this embodiment, since each moving contact assembly 400a is linked with each other, the actions of the moving contact assemblies 400a are coordinated. Each moving contact assembly 400a can switch from the on state to the off state or from the off state to the on state together. Moreover, compared with separately configuring a driving part for power input for each moving contact assembly 400a, this technical solution of linking each moving contact assembly 400a with each other can simplify the structure of the driving part.

[0089] Each moving contact component 400a can be configured according to the usage requirements for the relay to switch its working state. That is to say, the moving contact component 400a is not limited to a specific structure. As long as the moving contact component 400a can control the on / off of the two lead-out ends of each terminal group in the lead-out end component 200 by switching between the on state and the off state to meet the usage requirements of the relay, it is sufficient.

[0090] For the sake of easy understanding, the following further describes the structure of the relay in combination with the functional configuration of the lead-out end component 200 in some embodiments, but it is not limited to the working state of the relay and the configuration limitations of the corresponding contact unit 400 are limited thereto.

[0091] For example, in embodiments where at least two terminal groups in the lead-out end component 200 have opposite on / off states, each moving contact component 400a in the contact unit 400 is configured such that when one terminal group in the lead-out end component 200 switches from the on state to the off state, the other terminal group in the lead-out end component 200 switches from the off state to the on state. In this way, there are two terminal groups in the lead-out end component 200 with opposite on / off states, and the terminal groups with opposite on / off states can be used to meet the on / off control requirements of different circuits.

[0092] Taking the terminal group formed by the first lead-out end 201 and the fourth lead-out end 204 as the "first terminal group 200a", the terminal group formed by the second lead-out end 202 and the third lead-out end 203 as the "second terminal group 200b", and the fourth lead-out end 204 and the third lead-out end 203 forming the "third terminal group 200c" as an example.

[0093] Each moving contact component 400a in the contact unit 400 can be configured such that the on / off states of the first terminal group 200a and the third terminal group 200c are opposite, or the on / off states of the second terminal group 200b and the third terminal group 200c are opposite.

[0094] The lead-out end component 200 has at least two terminal groups. Since the lead-out end component 200 has at least two terminal groups, the lead-out end component 200 can provide more control combinations and adapt to external circuits with more complex control logics, and has stronger applicability.

[0095] In some embodiments, the lead-out ends included in any two terminal groups are independent of each other. That is to say, the lead-out ends included in any one terminal group are not shared with the lead-out ends in other terminal groups, but independent lead-out ends are adopted. In this way, each terminal group can be independently assembled into the housing 100, thus avoiding the problem of inconvenient assembly caused by the existence of shared lead-out ends between terminal groups.

[0096] In some embodiments, the lead-out terminal assembly 200 has at least two terminal groups, and each terminal group shares two lead-out terminals. The two shared lead-out terminals are the first terminal and the second terminal respectively. In each terminal group, the first terminal is adapted to form a first terminal group 200a with one of the other two lead-out terminals except the second terminal, the second terminal is adapted to form a second terminal group 200b with the other of the other two lead-out terminals except the first terminal, and the other two lead-out terminals except the first terminal and the second terminal are adapted to form a third terminal group 200c. In this embodiment, by sharing the first terminal and the second terminal to construct more terminal groups, more control combinations can be provided without increasing the number of lead-out terminals, so as to maintain the miniaturization of the relay while enriching the application scenarios of the relay.

[0097] For ease of understanding, take the lead-out terminal assembly 200 having two terminal groups as an example, and the four lead-out terminals in each terminal group form the first terminal group 200a, the second terminal group 200b, and the third terminal group 200c.

[0098] As Figure 3 and Figure 4 shown, each terminal group includes a first lead-out terminal 201, a second lead-out terminal 202, a third lead-out terminal 203, and a fourth lead-out terminal 204; in the same terminal group, the first lead-out terminal 201 and the fourth lead-out terminal 204 form the first terminal group 200a, the second lead-out terminal 202 and the third lead-out terminal 203 form the second terminal group 200b, and the third lead-out terminal 203 and the fourth lead-out terminal 204 form the third terminal group 200c. Since the other two lead-out terminals except the first terminal and the second terminal in each terminal group are adapted to form the third terminal group 200c, and the two lead-out terminals of the third terminal group 200c are the third lead-out terminal 203 and the fourth lead-out terminal 204 respectively, therefore, in this embodiment, among the four lead-out terminals of each terminal group, the first lead-out terminal 201 and the second lead-out terminal 202 are the two shared lead-out terminals, that is, the first lead-out terminal 201 and the second lead-out terminal 202 serve as the first terminal and the second terminal respectively.

[0099] Continue to combine Figure 3 and Figure 4As shown, the lead-out terminal assembly 200 can be connected to the vehicle's power distribution system, and the series-parallel switching of at least two battery packs VC can be achieved through the switching function of the relay. Among them, in each terminal group, the first terminal and the second terminal are respectively used to connect to the total input terminal A and the total output terminal B of the entire battery pack VC, and the other two lead-out terminals are respectively used to connect to the positive electrode and the negative electrode between two adjacent battery packs. Since the on-off states of the first terminal group 200a and the second terminal group 200b are the same, and are opposite to the on-off state of the third terminal group 200c, thus, when the electrical paths of the first terminal group 200a (i.e., the first lead-out terminal 201 and the fourth lead-out terminal 204) and the second terminal group 200b (i.e., the second lead-out terminal 202 and the third lead-out terminal 203) in each terminal group are both in the conducting state, each third terminal group 200c (i.e., the third lead-out terminal 203 and the fourth lead-out terminal 204) is in the disconnected state. At this time, each battery pack VC is connected in parallel between the total input terminal A and the total output terminal B. Correspondingly, when each third terminal group 200c (i.e., the third lead-out terminal 203 and the fourth lead-out terminal 204) in each terminal group is in the conducting state, the electrical paths of each first terminal group 200a (i.e., the first lead-out terminal 201 and the fourth lead-out terminal 204) and each second terminal group 200b (i.e., the second lead-out terminal 202 and the third lead-out terminal 203) are both in the disconnected state. At this time, each third terminal group 200c makes each battery pack VC connected in series between the total input terminal A and the total output terminal B.

[0100] Refer again to Figures 5 to 7 As shown, in some embodiments, the relay includes at least two lead-out terminal assemblies 200. Figure 6 Two lead-out terminal assemblies 200 are shown, namely the first lead-out terminal assembly 2001 and the second lead-out terminal assembly 2002. Each lead-out terminal assembly 200 is arranged along a first direction parallel to the first side wall 100a. Each lead-out terminal of each lead-out terminal assembly 200 corresponds to each lead-out terminal of other lead-out terminal assemblies 200 one by one, and among different lead-out terminal assemblies 200, the corresponding lead-out terminals are adapted to be externally connected as the common terminals of the parallel switches in the relay. By providing at least two lead-out terminal assemblies 200, parallel switches (equivalent to the moving contact assembly 400a) can be correspondingly arranged inside the relay for each lead-out terminal assembly 200, thereby reducing the overall contact resistance of the relay, making the relay more suitable for high-voltage or high-current application scenarios, and reducing the occurrence probability of the relay conduction failure and improving the reliability of the relay.

[0101] Taking the first lead-out terminal assembly 2001 and the second lead-out terminal assembly 2002 both including the above-mentioned first lead-out terminal 201, second lead-out terminal 202, third lead-out terminal 203, and fourth lead-out terminal 204 as an example. For ease of description, in combination with Figure 7 and Figure 8As shown, the first lead terminal 201, the second lead terminal 202, the third lead terminal 203, and the fourth lead terminal 204 in the first lead terminal assembly 2001 are respectively represented as "terminal one D1", "terminal two D2", "terminal three D3", and "terminal four D4", and the first lead terminal 201, the second lead terminal 202, the third lead terminal 203, and the fourth lead terminal 204 in the second lead terminal assembly 2002 are respectively represented as "terminal five D5", "terminal six D6", "terminal seven D7", and "terminal eight D8".

[0102] In this embodiment, the first lead terminal assembly 2001 and the second lead terminal assembly 2002 are arranged along a first direction parallel to the first side wall 100a, and the lead terminals of the first lead terminal assembly 2001 and the lead terminals of the second lead terminal assembly 2002 correspond to each other one by one. It should be noted that in the first lead terminal assembly 2001 and the second lead terminal assembly 2002, the corresponding lead terminals are adapted to be externally connected as the common terminals of the parallel switches in the relay, that is, the corresponding here refers to the functional correspondence of the externally connected common terminals, not the positional correspondence of the arrangement. For example, as combined Figure 5 and Figure 6 shown, the first lead terminal 201 (i.e., terminal one D1) in the first lead terminal assembly 2001 corresponds to the first lead terminal 201 (i.e., terminal five D5) in the second lead terminal assembly 2002; the second lead terminal 202 (i.e., terminal two D2) in the first lead terminal assembly 2001 corresponds to the second lead terminal 202 (i.e., terminal six D6) in the second lead terminal assembly 2002; the third lead terminal 203 (i.e., terminal three D3) in the first lead terminal assembly 2001 corresponds to the third lead terminal 203 (i.e., terminal seven D7) in the second lead terminal assembly 2002; the fourth lead terminal 204 (i.e., terminal four D4) in the first lead terminal assembly 2001 corresponds to the fourth lead terminal 204 (i.e., terminal eight D8) in the second lead terminal assembly 2002. Since in the first lead terminal assembly 2001 and the second lead terminal assembly 2002, the corresponding lead terminals are adapted to be externally connected as the common terminals of the parallel switches in the relay, then terminal one D1 and terminal five D5 are adapted to be externally connected as the common terminals of the parallel switches in the relay; terminal two D2 and terminal six D6 are adapted to be externally connected as the common terminals of the parallel switches in the relay; terminal three D3 and terminal seven D7 are adapted to be externally connected as the common terminals of the parallel switches in the relay; terminal four D4 and terminal eight D8 are adapted to be externally connected as the common terminals of the parallel switches in the relay. Through this setting, each lead terminal adapts to the electrical connection requirements of the relay in the external circuit.

[0103] Refer to again Figure 2As shown, the contact unit 400 includes stationary contact components 400b that correspond one by one to the moving contact components 400a. Each stationary contact component 400b includes two stationary contacts respectively for inputting current and outputting current, and each stationary contact is respectively connected to a lead-out terminal. The moving contact component 400a is used to disconnect or conduct the electrical path between the corresponding two stationary contacts. Thus, when the moving contact component 400a disconnects the electrical path between the corresponding two stationary contacts, the electrical path between the two lead-out terminals connected to the two stationary contacts is disconnected; correspondingly, when the moving contact component 400a conducts the electrical path between the corresponding two stationary contacts, the electrical path between the two lead-out terminals connected to the two stationary contacts is conducted. It should be noted that the stationary contact components 400b are fixed relative to the housing 100, so that the stationary contact components 400b are not prone to loosening during the use of the relay, thereby ensuring the stability of each lead-out terminal to ensure the reliability of the electrical connection.

[0104] Taking the contact unit 400 including two stationary contact components 400b and two moving contact components 400a that correspond one by one to each other as an example. In combination with Figure 2 As shown, the two stationary contact components 400b in the contact unit 400 are respectively the first stationary contact component 403 and the second stationary contact component 404. The first stationary contact component 403 and the second stationary contact component 404 are both fixed relative to the housing 100.

[0105] The first stationary contact component 403 includes a first stationary contact 4031 and a second stationary contact 4032, and the first stationary contact 4031 and the second stationary contact 4032 are respectively used for inputting current and outputting current.

[0106] In some embodiments, the first stationary contact 4031 is connected to the first lead-out terminal 201, and the second stationary contact 4032 is connected to the fourth lead-out terminal 204.

[0107] The second stationary contact component 404 includes a third stationary contact 4041 and a fourth stationary contact 4042, and the third stationary contact 4041 and the fourth stationary contact 4042 are respectively used for inputting current and outputting current. Among them, the third stationary contact 4041 is connected to the third lead-out terminal 203, and the fourth stationary contact 4042 is connected to the second lead-out terminal 202.

[0108] The two moving contact components 400a of the contact unit 400 are respectively the first moving contact component 401 and the second moving contact component 402. Among them, the first moving contact component 401 is used to disconnect or conduct the electrical path between the first stationary contact 4031 and the second stationary contact 4032; the second moving contact component 402 is used to disconnect or conduct the electrical path between the third stationary contact 4041 and the fourth stationary contact 4042. Thus, the two moving contact components 400a in the contact unit 400 can be used to disconnect or conduct the electrical path between the two stationary contacts of the corresponding stationary contact component 400b to meet the requirements of the relay for performing switch operations in the external circuit.

[0109] Since in the contact unit 400, at least two static contact components 400b and at least two moving contact components 400a correspond to each other one by one,

[0110] In the contact unit 400, the arrangement direction of each static contact component 400b can be arranged along a second direction intersecting with the first side wall 100a, and each moving contact component is arranged along the second direction. Therefore, the arrangement direction of each static contact component 400b is the same as that of each moving contact component 400a, which is conducive to arranging each static contact component 400b adjacent to the correspondingly arranged moving contact component 400a, thereby improving the layout compactness between them, realizing the miniaturization of the relay, and reducing the amount of conductive material consumed for electrically leading out each static contact component 400b to the outside of the housing 100, and then reducing the cost.

[0111] It should be noted here that since the arrangement directions of each static contact component 400b and each moving contact component 400a are both arranged along the second direction, the installation directions of each static contact component 400b and each moving contact component 400a are usually parallel to the first side wall 100a to ensure that each static contact component 400b and each moving contact component 400a can obtain support. On this basis, the first side wall 100a can be used to form one side of the opening of the housing 100 (for loading each static contact component 400b and each moving contact component 400a). Each static contact component 400b is connected to the first side wall 100a from the opening. The shapes and sizes of each static contact component 400b and each lead-out end can be flexibly set according to needs, and will not be restricted by the perforations on the first side wall 100a because they need to vertically extend out of the first side wall 100a. Therefore, the areas of each static contact component 400b and each lead-out end can be increased according to needs to adaptively increase the area of the connection surface of the lead-out end, so as to achieve reliable connection and reduce heat generation.

[0112] For example, as Figure 2 shown, in some embodiments, in the contact unit 400, the first static contact component 403 and the second static contact component 404 are arranged along the second direction, and the first moving contact component 401 and the second moving contact component 402 are arranged along the second direction. In this way, the arrangement direction of the first static contact component 403 and the second static contact component 404 is the same as that of the first moving contact component 401 and the second moving contact component 402. The first static contact component 403 and the second static contact component 404 are arranged adjacent to the correspondingly arranged first moving contact component 401 and the second moving contact component 402, thereby improving the layout compactness between them, realizing the miniaturization of the relay, and reducing the amount of conductive material consumed for electrically leading out the first static contact component 403 and the second static contact component 404 to the outside of the housing 100, and then reducing the cost.

[0113] In some embodiments, in the contact unit 400, the on-off states of the static contact components 400b are the same. When each moving contact component 400a disconnects the electrical paths between the corresponding two static contact members, adjacent two moving contact components 400a conduct the electrical paths between one static contact member each in the corresponding adjacent two static contact components 400b. In this way, the series-parallel switching can be achieved by controlling the on-off of each moving contact component 400a, enabling the relay to have the series-parallel switching function 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.

[0114] Combined with Figure 2 As shown, taking the first lead-out end 201 and the fourth lead-out end 204 to form the first terminal group 200a, and the second lead-out end 202 and the third lead-out end 203 to form the second terminal group 200b as an example.

[0115] The two static contact members of the first static contact component 403 are correspondingly connected to the two lead-out ends of the first terminal group 200a, and the two static contact members of the second static contact component 404 are correspondingly connected to the two lead-out ends of the second terminal group 200b.

[0116] When both the first moving contact component 401 and the second moving contact component 402 disconnect the electrical paths between the corresponding two static contact members, the electrical path between the first static contact member 4031 and the second static contact member 4032 is disconnected, and the electrical path between the third static contact member 4041 and the fourth static contact member 4042 is disconnected. The first moving contact component 401 and the second moving contact component 402 conduct the electrical path between the second static contact member 4032 and the third static contact member 4041.

[0117] Since the second static contact member 4032 is correspondingly connected to the fourth lead-out end 204, and the third static contact member 4041 is correspondingly connected to the third lead-out end 203, when the electrical path between the second static contact member 4032 and the third static contact member 4041 is conducting, it means that the electrical path between the fourth lead-out end 204 and the third lead-out end 203 is conducting. Further, since the fourth lead-out end 204 in the first terminal group 200a and the third lead-out end 203 in the second terminal group 200b form the third terminal group 200c, then the third terminal group 200c is in a conducting state at this time.

[0118] Based on this, when the first terminal group 200a and the second terminal group 200b are both in the conducting state, the third terminal group 200c is in the disconnected state; when the first terminal group 200a and the second terminal group 200b are both in the disconnected state, the third terminal group 200c is in the conducting state. In this way, the on-off states of the first terminal group 200a and the second terminal group 200b are the same, and are opposite to the on-off state of the third terminal group 200c. Through this design, the relay can be switched between series and parallel connections to adapt to some special usage scenarios, such as being applied to the battery management system of an automobile to optimize the charge and discharge functions of the battery pack.

[0119] In some embodiments, each moving contact assembly 400a includes a moving contact 410. One end of the moving contact 410 is fixed to one of the corresponding stationary contacts, and the other end is used for electrically connecting or disconnecting from another corresponding stationary contact. The moving contact 410 adopts a swinging method to achieve on-off control, which has a simple structure and occupies a small space, facilitating the miniaturization of the relay.

[0120] For example, taking the first moving contact assembly 401 as an example, in some embodiments, the first moving contact assembly 401 includes a moving contact 410. One end of the moving contact 410 is connected to the first stationary contact 4031, and the other end is used for electrically connecting or disconnecting from the second stationary contact 4032, so that the first moving contact assembly 401 can disconnect or connect the electrical path between the two stationary contacts (i.e., the first stationary contact 4031 and the second stationary contact 4032) of the first stationary contact assembly 403.

[0121] In some embodiments, when the moving contacts 410 in each moving contact assembly 400a are disconnected from the stationary contacts in the corresponding stationary contact assembly 400b, at least one moving contact 410 in the moving contact assembly 400a is electrically connected to one of the stationary contacts in the adjacent stationary contact assembly 400b to connect the electrical path between one stationary contact in each of the adjacent two stationary contact assemblies 400b, thereby realizing the series-parallel switching function of the relay.

[0122] In some embodiments, each moving contact assembly 400a includes two moving contacts 410. The fixed ends 411 of the two moving contacts 410 are respectively fixed to two stationary contacts, and the movable ends 412 of the two moving contacts 410 are respectively used for electrically connecting or disconnecting from another stationary contact. In this way, the two moving contacts 410 in the same moving contact assembly 400a realize a parallel structure with a simple structure to reduce the contact resistance, and can also utilize the electromagnetic force generated by each other when passing current to increase their contact pressure and the ability to withstand high-fault large currents, enabling the relay product to be applicable to high-voltage or high-current application environments.

[0123] Combined with Figures 6 to 8As shown, taking the contact system including the first moving contact component 401 and the second moving contact component 402 as an example, both the first moving contact component 401 and the second moving contact component 402 include two moving contact elements 410.

[0124] For ease of description, the moving contact element 410 in the first moving contact component 401 is named "the first moving contact element 4011", and the moving contact element 410 in the second moving contact component 402 is named "the second moving contact element 4021".

[0125] Combined with Figure 9 and Figure 10 As shown, the two first moving contact elements 4011 and the two second moving contact elements 4021 are both arranged along the second direction, and both the first moving contact element 4011 and the second moving contact element 4021 have a fixed end 411 and a movable end 412. Combined with Figure 2 As shown, among the two first moving contact elements 4011 of the first moving contact component 401, the fixed end 411 of one first moving contact element 4011 is fixed to the first static contact element 4031, and the fixed end 411 of the other first moving contact element 4011 is fixed to the second static contact element 4032.

[0126] Among the two first moving contact elements 4011, when the two movable ends 412 are in electrical contact with the fixed end 411 of the other first moving contact element 4011 respectively, the two first moving contact elements 4011 both form a parallel branch to conduct the electrical path between the first static contact element 4031 and the second static contact element 4032.

[0127] Correspondingly, among the two first moving contact elements 4011, when the two movable ends 412 both move away from the fixed end 411 of the other first moving contact element 4011 along the second direction, the two first moving contact elements 4011 both disconnect the electrical path between the first static contact element 4031 and the second static contact element 4032.

[0128] The two second moving contact elements 4021 of the second moving contact component 402 can also adopt the setting method of the two first moving contact elements 4011 of the first moving contact component 401.

[0129] Combined with Figure 2 As shown, among the two second moving contact elements 4021 of the second moving contact component 402, the fixed end 411 of one second moving contact element 4021 is fixed to the third static contact element 4041, and the fixed end 411 of the other second moving contact element 4021 is fixed to the fourth static contact element 4042.

[0130] Among the two second moving contact elements 4021, when the two movable ends 412 are in electrical contact with the fixed end 411 of the other second moving contact element 4021 respectively, the two second moving contact elements 4021 both form a parallel branch to conduct the electrical path between the third static contact element 4041 and the fourth static contact element 4042.

[0131] Accordingly, among the two second moving contact members 4021, when the two movable ends 412 both move away from the fixed end 411 of the other second moving contact member 4021 along the second direction, both of the two second moving contact members 4021 disconnect the electrical path between the third stationary contact member 4041 and the fourth stationary contact member 4042.

[0132] In the above embodiment, both the first moving contact assembly 401 and the second moving contact assembly 402 adopt two moving contact members 410 in contact with each other to form a parallel branch to conduct the electrical paths of the corresponding two stationary contact members, thereby reducing the contact resistance. In addition, each moving contact member 410 is a swinging moving spring having a fixed end 411 and a movable end 412, 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 passing current to each other to increase the contact pressure between the two and the ability to withstand high fault currents.

[0133] Combined with Figure 8 and Figure 10 As shown, in some embodiments, in at least one moving contact assembly 400a, the two moving contact members 410 each include a plurality of current guiding branches 413, and the current guiding branches 413 on the two moving contact members 410 correspond to each other one by one. The plurality of current guiding branches 413 of the moving contact member 410 are arranged along the first direction, and are configured to be respectively connected in parallel when the two stationary contact members of the corresponding stationary contact assembly 400b are electrically conducted, thereby facilitating the reduction of the contact resistance.

[0134] It should be noted that the current guiding branch 413 may extend from the fixed end 411 of the moving contact member 410 to the movable end 412, or may be a part of the structure between the fixed end 411 and the movable end 412 of the moving contact member 410.

[0135] Continuing to combine Figure 10 As shown, the moving contact member 410 is an integral structural member, and the moving contact member 410 is provided with a slit 414, and the slit 414 divides the moving contact member 410 into a plurality of current guiding branches 413. This structure of dividing the moving contact member 410 into a plurality of current guiding branches 413 by the slit 414 is simple and easy to implement.

[0136] The number of the current guiding branches 413 may be 2 or more, and the number of the current guiding branches 413 is not limited herein.

[0137] It should be noted that the partition gap 414 can extend from the fixed end 411 to the movable end 412, that is, the partition gap 414 divides the movable end 412 of the movable contact 410 into multiple sub-parts, and each sub-part is equivalent to a current guiding branch 413. At this time, the current guiding branch 413 extends from the fixed end 411 to the movable end 412 of the movable contact 410, and then each of the multiple current guiding branches 413 divided by the partition gap 414 has its corresponding movable end 412. Therefore, the movable ends 412 of the respective current guiding branches 413 are separated from each other. Compared with the movable end 412 of the movable contact 410 being integrally connected, this separation of the movable ends 412 of the respective current guiding branches 413 is beneficial to reducing the driving force when driving the movable end 412 to swing, making the switching action of the movable contact assembly 400a between the first switch state and the second switch state more flexible and reliable.

[0138] In addition, each current guiding branch 413 has a certain degree of independence, so that the restraint force generated between the respective current guiding branches 413 when swinging is small, thus avoiding leaving their corresponding static contacts 410a simultaneously due to vibration. In this way, this movable contact 410 is further beneficial to reducing the probability that all the movable contacts 410b are disconnected from the corresponding static contacts 410a due to vibration, and improving the shock resistance of the relay.

[0139] The partition gap 414 can also be used to divide a part of the structure of the movable contact 410 between the fixed end 411 and the movable end 412, that is to say, the partition gap 414 does not extend to the movable end 412. In this way, each current guiding branch 413 in the movable contact 410 is equivalent to forming multiple parallel branches arranged in the first direction between the fixed end 411 and the movable end 412. Thus, the movable end 412 and the fixed end 411 of the movable contact 410 are electrically connected through multiple parallel current guiding branches 413. In this way, when the movable contact assembly 400a is in the second switch state, two movable contact assemblies 400a are arranged in parallel, two movable contacts 410 in the movable contact assembly 400a are arranged in parallel, and multiple current guiding branches 413 in the movable contact 410 are arranged in parallel. The parallel current guiding branches 413 are used to further expand the parallel structure in the contact unit 400 to facilitate reducing the contact resistance.

[0140] Combined with Figure 11 and Figure 12As shown, in some embodiments, the second direction is perpendicular to the first sidewall 100a; the movement direction of the moving contact 410 in the moving contact assembly 400a is parallel to the second direction perpendicular to the first sidewall 100a. In this embodiment, the movement direction of the moving contact 410 is parallel to the second direction. That is to say, when the moving contact assembly 400a performs on-off switching, at the moment when the moving contact 410 in the natural state is deformed, the movement direction of the movable end 412 is parallel to the second direction. In addition, the movement direction of the moving contact 410 can be understood as the direction parallel to the tangent direction corresponding to the movable end 412 of the moving contact 410 in the undeformed natural state.

[0141] Since the movement direction of the moving contact 410 is parallel to the second direction perpendicular to the first sidewall 100a, in the second direction, the moving contact 410 can obtain sufficient movement space to meet the contact action requirements, without providing movement space for the contact action of the moving contact 410 in the direction perpendicular to the second direction. Thus, it is beneficial to arrange the moving contact 410 in the space in the direction perpendicular to the second direction (such as the first direction or the third direction), so that the moving contacts 410 are arranged compactly, which is conducive to realizing miniaturized design, and at the same time ensures the movement space required for the contact action.

[0142] In each contact unit 400, the number of the static contact assemblies 400b and the moving contact assemblies 400a is two, respectively, to meet the usage requirements of the relay. For example, by switching the on-off states of the two moving contact assemblies 400b, the electrical path between the lead-out ends connected to the static contact assembly 400a is disconnected or conducted, so that the terminal group can be configured such that the on-off states of two of the terminal groups are the same, and the on-off state of the other terminal group is opposite. Thus, there are multiple possibilities for the on-off control logic of the three terminal groups, so as to enrich the application scenarios of the relay and realize on-off control in different circuits.

[0143] Combined again with Figure 6 and Figure 7As shown, in some embodiments, the number of lead-out terminal assemblies 200 and contact units 400 is two each. Each lead-out terminal assembly 200 is arranged in a first direction perpendicular to the second direction and parallel to the first side wall 100a. The lead-out terminals of the two lead-out terminal assemblies 200 correspond to each other one by one, and among the two lead-out terminal assemblies 200, the corresponding lead-out terminals are adapted to be externally connected as the common terminals of the parallel switches in the relay. By arranging each lead-out terminal assembly 200 in the first direction, it is to meet the need for the corresponding moving contact assemblies 400a in each contact unit 400 to input or output current through the static contact assemblies 400b. Correspondingly, since the lead-out terminals of the two lead-out terminal assemblies 200 correspond to each other one by one, and among the two lead-out terminal assemblies 200, the corresponding lead-out terminals are adapted to be externally connected as the common terminals of the parallel switches in the relay, the moving contact assemblies 400a in parallel can be arranged inside the relay corresponding to each lead-out terminal assembly 200, thereby reducing the overall contact resistance of the relay, making the relay more suitable for high-voltage or high-current application scenarios, reducing the occurrence probability of relay conduction failure, and improving the reliability of the relay.

[0144] It should be noted here that in the embodiment where the number of the lead-out terminal assemblies 200 and the contact units 400 is two each, the arrangement structures of each lead-out terminal assembly 200 and each contact unit 400 can refer to the above-mentioned related embodiments.

[0145] For example, in each contact unit 400, the two lead-out terminals corresponding to one of the static contact assemblies 400b are the first lead-out terminal 201 and the second lead-out terminal 202 respectively, and the two lead-out terminals corresponding to the other static contact assembly 400b are the third lead-out terminal 203 and the fourth lead-out terminal 204 respectively; the first lead-out terminal 201 and the second lead-out terminal 202 are arranged in a third direction; the third lead-out terminal 203 and the fourth lead-out terminal 204 are arranged in a third direction; the first lead-out terminal 201 and the third lead-out terminal 203 are arranged in the first direction; the second lead-out terminal 202 and the fourth lead-out terminal 204 are arranged in the first direction.

[0146] Among the two lead-out terminal assemblies 200, the two third lead-out terminals 203 are arranged in the first direction and are located between the two first lead-out terminals 201 in the first direction, and the two fourth lead-out terminals 204 are arranged in the first direction and are located between the two second lead-out terminals 202 in the first direction.

[0147] In this embodiment, by reasonably arranging the positions of the lead-out terminals, the lead-out terminals are convenient to be connected to the corresponding static contact members, and while meeting the electrical connection requirements of the relay, the lead-out terminals are arranged at positions adjacent to the static contact members to which they are connected, so as to reduce the usage amount of the conductive material of the lead-out terminals.

[0148] It should be noted here that the arrangement of the lead-out terminals in the two lead-out terminal assemblies 200 is not limited to the above embodiments. In some embodiments, the first lead-out terminal 201 and the second lead-out terminal 202 can also be arranged in the middle in the first direction. For example, in the two lead-out terminal assemblies 200, the two first lead-out terminals 201 are arranged along the first direction and are located between the two third lead-out terminals 203 along the first direction, and the two second lead-out terminals 202 are arranged along the first direction and are located between the two fourth lead-out terminals 204 along the first direction.

[0149] Combined with Figure 11 and Figure 12 As shown, in some embodiments, the housing 100 includes a mounting base 110. The mounting base 110 has a first mounting cavity 111 and a second mounting cavity 112 arranged along the first direction. The moving contact assemblies 400a of the two contact units 400 can be respectively inserted into the first mounting cavity 111 and the second mounting cavity 112 from the two ends of the mounting base 110 in the first direction. This assembly method is simple, and the mounting base 110 only needs to set the installation space for the relevant structure at the corresponding positions, and there is no need to reserve space at other positions under the condition of meeting the use requirements of the relay, so as to ensure the overall structural strength of the mounting base 110, make the mounting base 110 not easy to deform, and improve the use reliability of the relay.

[0150] It should be noted that each static contact member extends out of the housing 100 along the third direction and bends along the second direction to be connected to the lead-out terminal.

[0151] For easy understanding, combined with Figure 13 and Figure 14 As shown, the side wall of the mounting base 110 is provided with grooves for each static contact member to extend out.

[0152] It should be noted that the number of grooves corresponds to the number of static contact members. For example, combined with Figure 6 and Figure 7 As shown, taking the first lead-out terminal assembly 2001 and the second lead-out terminal assembly 2002 in the above embodiments both including the above-mentioned first lead-out terminal 201, second lead-out terminal 202, third lead-out terminal 203 and fourth lead-out terminal 204 as an example, 8 lead-out terminals are respectively connected to 8 static contact members. Combined with Figure 8 , Figure 13 and Figure 14As shown, in some embodiments, the side wall of the mounting base 110 is provided with eight grooves, and the eight stationary contacts respectively extend out from the corresponding grooves. For ease of understanding, the stationary contacts respectively connected to the eight lead-out ends (i.e., terminal one D1 to terminal eight D8) are respectively referred to as "stationary contact one P1", "stationary contact two P2", "stationary contact three P3", "stationary contact four P4", "stationary contact five P5", "stationary contact six P6", "stationary contact seven P7", and "stationary contact eight P8". Correspondingly, the grooves for mounting the corresponding stationary contacts are respectively referred to as "groove one C1", "groove two C2", "groove three C3", "groove four C4", "groove five C5", "groove six C6", "groove seven C7", and "groove eight C8".

[0153] Each groove extends to the inner wall surface and the outer wall surface of the mounting base 110, and respectively forms an inner notch and an outer notch on the inner wall surface and the outer wall surface. The depth of the inner notch of the groove communicating with the first mounting cavity 111 is less than or equal to 1 / 3 of the depth of the first mounting cavity 111, and the depth of the inner notch of the groove communicating with the second mounting cavity 112 is less than or equal to 1 / 3 of the depth of the second mounting cavity 112. By controlling the grooving depth of each groove, it is beneficial to maintain the structural strength of the mounting base 110, and avoid that at least one side of the side wall of the mounting base 110 becomes an isolated and unsupported structure due to over-deep grooving, thereby avoiding affecting the overall structural strength of the mounting base 110 and improving the use reliability of the relay. Therefore, adopting the solution of this embodiment can improve the structural strength of the side wall of the mounting base 110, and achieve physical isolation and independent stress bearing for different contact units 400. The mounting base 110 is not easily deformed, thereby enhancing the reliability of the relay.

[0154] In some embodiments, the two lead-out end assemblies 200 are arranged in a mirror image with a plane perpendicular to the first direction as the symmetry plane. The setting of the mirror symmetry structure is beneficial to simplify the processing difficulty and installation difficulty of each component, and this mirror symmetry 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.

[0155] Combined again with Figures 11 to 14As shown, the mounting base 110 includes a base body 1101 and a first mounting plate 1102. The first mounting plate 1102 is connected to the inner wall of the base body 1101. The first mounting plate 1102 divides the inner cavity of the base body 1101 into a first mounting cavity 111 and a second mounting cavity 112 along the first direction. Therefore, in the first direction, the first mounting cavity 111 is located on one side of the first mounting plate 1102, and the second mounting cavity 112 is located on the other side of the first mounting plate 1102. The first mounting cavity 111 and the second mounting cavity 112 respectively have a first mounting opening and a second mounting opening, and the first mounting opening and the second mounting opening are located at both ends of the base body 1101 in the first direction. In this embodiment, the contact units 400 can be independently installed into the first mounting cavity 111 and the second mounting cavity 112 respectively from the first mounting opening and the second mounting opening (for example, two contact units 400 are respectively loaded into the first mounting cavity 111 and the second mounting cavity 112), so as to improve the installation convenience of the contact units 400 in the mounting base 110. At the same time, since the first mounting plate 1102 is connected to the inner wall of the base body 1101, the first mounting plate 1102 can play a role in strengthening the structure of the base body 1101, making the base body 1101 not easily deformed. Then, even if the static contact point 410a is impacted by the moving contact point 410b during the contact action of the first moving contact assembly 401 and the second moving contact assembly 402, generating an impact force on the base body 1101, the base body 1101 can reduce the probability of deformation or damage under the strengthening effect of the first mounting plate 1102, making the relay not easily damaged and extending the service life of the relay.

[0156] Combined with Figure 6 As shown, in some embodiments, the relay further includes an electromagnetic system 500, and the electromagnetic system 500 can be loaded into the base body 1101 from one end of the mounting base 110 along the first direction. The electromagnetic system 500 includes a coil assembly 510 and an armature assembly 520. The armature assembly 520 is used to move based on the polarity change of the coil assembly 510 to drive the moving contacts 410 of each moving contact assembly 400a in the contact unit 400 to move synchronously.

[0157] Combined with Figure 13 As shown, the inner cavity of the base body 1101 further has a third mounting cavity 113 that communicates with both the first mounting cavity 111 and the second mounting cavity 112. The electromagnetic system 500 can be installed into the third mounting cavity 113 along at least one end of the base body 1101 in the first direction, thereby improving the installation convenience when the electromagnetic system 500 and the contact unit 400 are installed into the base body 1101.

[0158] Continuing to combine Figure 11 and Figure 13As shown, the mounting base 110 further includes a second mounting plate 1103. The second mounting plate 1103 is connected to the first mounting plate 1102, and the second mounting plate 1103 divides the space enclosed by the seat body 1101 to form a third mounting cavity 113.

[0159] Combined with Figure 13 and Figure 14 As shown, in the second direction, both the first mounting cavity 111 and the second mounting cavity 112 are located on one side of the second mounting plate 1103, and the third mounting cavity 113 is located on the other side of the second mounting plate 1103. The electromagnetic system 500 can be mounted into the third mounting cavity 113 along the first direction. Understandably, both the coil assembly 510 and the armature assembly 520 can be mounted into the third mounting cavity 113 along the first direction from the third mounting opening.

[0160] Combined with Figure 6 , Figure 7 , Figure 13 and Figure 14 As shown, the seat body 1101 includes a side wall portion 1101a and a bottom wall portion 1101b. Understandably, the first side wall 100a can be one of the side walls of the side wall portion 1101a. The bottom wall portion 1101b is connected to the side wall portion 1101a and the second mounting plate 1103. The second mounting plate 1103 and a part of the structure of the side wall portion 1101a jointly enclose to form the third mounting cavity 113, and another part of the structure of the side wall portion 1101a, the first mounting plate 1102 and the second mounting plate 1103 enclose to form the first mounting cavity 111 and the second mounting cavity 112. The bottom wall portion 1101b is parallel to the first mounting plate 1102. One end of the electromagnetic system 500 is connected to the bottom wall portion 1101b, thereby improving the mounting stability of the electromagnetic system 500.

[0161] It should be noted that in the embodiment where the electromagnetic system 500 includes the coil assembly 510 and the armature assembly 520, both the coil assembly 510 and the armature assembly 520 are connected to the bottom wall portion 1101b. Thus, the bottom wall portion 1101b improves the mounting stability of the coil assembly 510 and the mounting stability of the armature assembly 520.

[0162] In some embodiments, the armature assembly 520 is connected to a rotating shaft 520a. One end of the rotating shaft 520a is connected to the bottom wall portion 1101b, and the armature assembly 520 can rotate relative to the bottom wall portion 1101b around the central axis of the rotating shaft 520a. In this embodiment, the rotation of the armature assembly 520 relative to the bottom wall portion 1101b around the central axis of the rotating shaft 520a is used to provide power for the contact or disconnection action of the moving contact assembly 400a in the contact unit 400 to meet the usage requirements of the relay. The axial direction of the rotating shaft 520a is arranged parallel to the first direction. Therefore, the armature assembly 520 can be rotatably connected to the bottom wall portion 1101b through the rotating shaft 520a when assembled into the third installation cavity 113 of the mounting base 110 along the first direction.

[0163] In an embodiment including two contact units 400, one contact unit 400 is assembled into the first installation cavity 111 of the mounting base 110 along the first direction, and the other contact unit 400 is assembled into the second installation cavity 112 of the mounting base 110 along the first direction. Therefore, in the relay of the present application, the electromagnetic system 500 and the two contact units 400 can be assembled into the mounting base 110 in the same dimension (i.e., the first direction), making the assembly operation convenient. And in this structural layout, it is beneficial to reduce the waste of the assembly space to achieve the miniaturization of the relay. Also, since the electromagnetic system 500 and the contact unit 400 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 being too large in a certain direction (the first direction or the second direction) and being unfavorable for the miniaturization design.

[0164] It should be noted that the second mounting plate 1103 can also play a supporting role, and the supporting role here includes but is not limited to the second mounting plate 1103 directly playing a supporting role. In some embodiments, the second mounting plate 1103 can indirectly play a role in mounting and supporting. For example, as Figure 6 and Figure 7 shown, one end of the rotating shaft 520a is connected to the bottom wall portion 1101b, and the other end is connected to the mounting frame 520b. When the mounting frame 520b is installed on the seat body 1101, the second mounting plate 1103 cooperates with the mounting frame 520b, and the second mounting plate 1103 can fix the mounting frame 520b to reduce the probability of the mounting frame 520b loosening relative to the seat body 1101. Therefore, in this embodiment, the second mounting plate 1103 indirectly supports the rotating shaft 520a through the mounting frame 520b, enabling the armature assembly 520 to rotate stably around the rotating shaft 520a to improve the rotation stability of the armature assembly 520.

[0165] In some embodiments, the extending direction of the second mounting plate 1103 is parallel to the first direction. In this way, the second mounting plate 1103 is not likely to interfere with the assembly of the contact unit 400, avoiding waste of space and facilitating the miniaturization of the relay.

[0166] Combined Figure 6 , Figure 11 and Figure 12 As shown in the figures, the relay further includes a pushing mechanism 600, and the pushing mechanism 600 is disposed between the armature assembly 520 and the contact unit 400. The pushing mechanism 600 is configured to drive the contact unit 400 to act under the drive of the armature assembly 520, so that the contact unit 400 controls the electrical conduction or disconnection of two lead-out ends in each terminal group.

[0167] In some embodiments, the pushing mechanism 600 includes a first set of pushing cards 610 and a second set of pushing cards 620. The first set of pushing cards 610 includes two first pushing cards 611, and the second set of pushing cards 620 includes two second pushing cards 621.

[0168] In some embodiments, the two first pushing cards 611 are respectively connected to the movable ends 412 of the movable contacts 410 in one of the contact units 400 correspondingly, and the two second pushing cards 621 are respectively connected to the movable ends 412 of the movable contacts 410 in the other contact unit 400 correspondingly. With this structural arrangement, the pushing mechanism 600 is split in the first direction in the mounting base 110 by using the first set of pushing cards 610 and the second set of pushing cards 620. Thus, in the case where a plurality of contact units 400 arranged in the first direction need to be driven simultaneously, it is avoided that the size of the pushing card in the first direction is too large and prone to deformation or fracture due to adopting a single set of pushing cards, improving the reliability of the pushing mechanism 600 in pushing such a large contact unit 400.

[0169] The armature assembly 520 includes a first connecting arm 521 and a second connecting arm 522. The armature assembly 520 can rotate back and forth around a rotating shaft 520a parallel to the first direction, so that the driving ends of the first connecting arm 521 and the second connecting arm 522 move in opposite directions. The two first pushing cards 611 are correspondingly connected to the first connecting arm 521 and the second connecting arm 522. The two second pushing cards 621 are correspondingly connected to the first connecting arm 521 and the second connecting arm 522. The ends of the two first pushing cards 611 far from the first movable contact assembly 401 are respectively connected to the driving ends of the first connecting arm 521 and the second connecting arm 522 correspondingly, and the ends of the two second pushing cards 621 far from the second movable contact assembly 402 are respectively connected to the driving ends of the first connecting arm 521 and the second connecting arm 522 correspondingly.

[0170] In the driving mechanism 600, the number of moving contact pieces respectively pushed by the first driving card 611 and the second driving card 621 is not limited herein. As long as the driving mechanism 600 can drive the moving contact pieces in each contact unit 400 under the drive of the armature assembly 520 to switch each terminal group in the relay to the required on / off state.

[0171] In some embodiments, the armature assembly 520 is located between the coil assembly 510 and the contact unit 400 along the second direction. In this way, the armature assembly 520 can be closer to the contact unit 400, which is beneficial to reducing the length of the lever arm for the armature assembly 520 to drive the contact unit 400 to move, thereby making the structure compact and realizing miniaturization of the relay.

[0172] Continuing with reference to Figure 6 、 Figure 11 and Figure 12 As shown, taking the armature assembly 520 including the first connecting arm 521 and the second connecting arm 522 as an example, the first connecting arm 521 and the second connecting arm 522 are located on the side of the armature assembly 520 along the second direction facing away from the coil assembly 510, and the driving ends of the first connecting arm 521 and the second connecting arm 522 are respectively located on both sides of the armature assembly 520 along the third direction.

[0173] In this embodiment, since the first connecting arm 521 and the second connecting arm 522 are located on the side of the armature assembly 520 along the second direction facing away from the coil assembly 510, the distances from the driving ends of the first connecting arm 521 and the second connecting arm 522 to the contact unit 400 in the second direction are short. The first set of driving cards 610 and the second set of driving cards 620 are transmission structures for driving the movable ends 412 of the corresponding movable contact members 410 to move under the drive of the armature assembly 520. The shorter the distances from the driving ends of the first connecting arm 521 and the second connecting arm 522 to the contact unit 400 in the second direction, the shorter the extension lengths of the two first driving cards 611 in the first set of driving cards 610 and the two second driving cards 621 in the second set of driving cards 620 in the second direction. Subsequently, it is not easy to deform when driving the movable contact member 410 to move, which is beneficial to maintaining the contact reliability between the movable contact members 410, and thus improves the reliability of the relay.

[0174] It should be noted that the number of driving cards in the driving mechanism 600 is not limited to the two sets of driving cards, namely the first set of driving cards 610 and the second set of driving cards 620. In some embodiments, the driving mechanism 600 includes multiple sets of driving cards, and multiple sets of driving cards means that the number of sets of driving cards is 2 or more. Each set of driving cards is arranged along the first direction and is respectively connected to the movable contact assemblies 400a in each contact unit 400 arranged along the first direction. The structures of each set of driving cards and the connection structures with the respective movable contact assemblies 400a are not limited herein.

[0175] In an embodiment where the electromagnetic system 500 includes a coil assembly 510 and an armature assembly 520, the armature assembly 520 is configured to move based on the change in the polarity of the coil assembly 510, and drive the moving contact 410 in each contact unit 400 to act synchronously through each group of pushing cards.

[0176] Combined with Figure 6 As shown, in some embodiments, the coil assembly 510 includes at least two coil windings 511 arranged along a first direction. While arranging multiple moving contact assemblies 400a in the space of the first direction, the height of the moving contact unit in the first direction will adaptively increase. Therefore, in this embodiment, by setting the coil assembly 510 to include at least two coil windings 511 arranged along the first direction, more coil windings 511 can be arranged using the space in the first direction, improving the space utilization rate of the position of the coil assembly 510 in the first direction. Without changing the total number of turns of the coil, this design is beneficial to reducing the projected area of the coil assembly 510 on the plane perpendicular to the first direction, so as to realize the miniaturization of the relay.

[0177] Furthermore, the size of the coil winding 511 in the second direction is less than or equal to the size of the coil winding 511 in the first direction. In this way, the coil winding 511 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 511 and the moving contact unit in the first direction more reasonable, which is beneficial to the miniaturization of the relay.

[0178] Combined with again Figure 6 and Figure 7 As shown, in some embodiments, the isolation structure 300 includes four partition members, each partition member is fixed relative to the housing 100, and is respectively configured to electrically isolate two lead-out ends that are adjacent and adapted to be externally connected to a circuit in different terminal groups along the first direction (for example, the positive electrode of the first loop and the positive electrode of the second loop). In this embodiment, the two lead-out ends that need to be electrically isolated by the partition member can also be understood as two lead-out ends that are not used as shared lead-out ends (such as the first terminal and the second terminal) externally and are adjacent, and these two lead-out ends are used for two terminals that are externally connected to a circuit, rather than the same terminal of the connected circuit (because the two terminals connected to the same terminal of the circuit need to be in electrical contact with each other and do not require insulation).

[0179] In this embodiment, the creepage distance between the corresponding adjacent two lead-out ends is increased by using the partition member to improve the electrical isolation performance.

[0180] It should be noted that in the embodiment in which the isolation structure 300 includes four barrier members, the isolation structure 300 may also include other structures. For example, the isolation structure 300 also includes a partition wall 301 protruding from the outer wall surface of the first side wall 100a. The partition wall 301 extends along the first direction and is located between the two lead-out terminals of each terminal group. In this way, not only can the barrier members be used to increase the creepage distance between the lead-out terminals on the same side of different terminal groups to achieve the effect of electrical isolation, but at the same time, the partition wall 301 further increases the creepage distance between the two lead-out terminals of each terminal group, thereby improving the electrical isolation effect between the lead-out terminals.

[0181] There is no limitation on the structure of the four barrier members, as long as the barrier members can increase the creepage distance at the corresponding positions.

[0182] For ease of understanding, the four barrier members are hereinafter referred to as “first barrier member 10 ”, “second barrier member 20 ”, “third barrier member 30 ” and “fourth barrier member 40 ” respectively.

[0183] In some embodiments, the first barrier 10 is connected to one of the static contact 1 P1 and the static contact 3 P3; the second barrier 20 is connected to one of the static contact 2 P2 and the static contact 4 P4; the third barrier 30 is connected to one of the static contact 5 P5 and the static contact 7 P7; the fourth barrier 40 is connected to one of the static contact 6 P6 and the static contact 8 P8.

[0184] The first barrier 10 is used to electrically isolate the static contact one P1 and the static contact three P3, that is, the first barrier 10 increases the creepage distance between the static contact one P1 and the static contact three P3. The second barrier 20 is used to electrically isolate the static contact two P2 and the static contact four P4, that is, the second barrier 20 increases the creepage distance between the static contact two P2 and the static contact four P4. The third barrier 30 is used to electrically isolate the static contact five P5 and the static contact seven P7, that is, the third barrier 30 increases the creepage distance between the static contact five P5 and the static contact seven P7. The fourth barrier 40 is used to electrically isolate the static contact six P6 and the static contact eight P8, that is, the fourth barrier 40 increases the creepage distance between the static contact six P6 and the static contact eight P8.

[0185] It should be noted that the first barrier member 10, the second barrier member 20, the third barrier member 30 and the fourth barrier member 40 can be assembled into corresponding grooves on the mounting seat 110 along with corresponding stationary contacts. Figure 7 , Figure 8 , Figure 13 and Figure 14As shown, the first partition member 10, the second partition member 20, the third partition member 30, and the fourth partition member 40 are all provided with a clamping portion S. The first stationary contact P1 is engaged with the clamping portion S of the first partition member 10 and is assembled together into the first groove C1; the fourth stationary contact P4 is engaged with the clamping portion S of the second partition member 20 and is assembled together into the fourth groove C4; the fifth stationary contact P5 is engaged with the clamping portion S of the third partition member 30 and is assembled together into the fifth groove C5; the eighth stationary contact P8 is engaged with the clamping portion S of the fourth partition member 40 and is assembled together into the eighth groove C8. In this way, these grooves can be used to conveniently install the corresponding partition members, improving the installation stability of the partition members.

[0186] The clamping portion S is used for connecting with the bent portion of the corresponding stationary contact, and the clamping portion S is in limit cooperation with the relay housing 100 and / or the corresponding bent portion in the first direction, the second direction, and the third direction. In this way, the corresponding stationary contact is clamped by the clamping portion S of the partition member, so that when the clamping portion S is assembled into the corresponding groove, the stationary contact is not easily shaken at the groove under the action of the clamping portion S, thereby improving the installation stability of the stationary contact relative to the mounting seat 110. It should be noted here that there may be an interference fit between the stationary contact and the housing 100 and it is fixed by dispensing. Since the clamping portion S is engaged with the stationary contact, when the stationary contact is installed into the corresponding groove and fixed to the housing 100, the clamping portion S has reliable stability relative to the housing 100 after being limited and / or fixed by the stationary contact.

[0187] Each clamping portion S is provided with a clamping groove SC to cooperate with the corresponding stationary contact through its respective clamping groove SC. In order to improve the assembly stability between the partition member and the corresponding stationary contact by using the clamping groove SC of the clamping portion S, so as to enhance the reliability of the relay. It should be noted that the clamping portion S only needs to be able to cooperate with the corresponding groove, and is not limited here. The clamping groove SC only needs to be able to clamp a part of the structure of the corresponding stationary contact to improve the assembly stability between the partition member and the corresponding stationary contact. The shapes of the clamping portion S and the clamping groove SC are not limited here.

[0188] Combined again Figures 5 to 6 As shown, in some embodiments, the relay further includes two mounting covers 120; the two mounting covers 120 are respectively fixed to both ends of the mounting seat 110 in the first direction and form the relay housing 100 with the mounting seat 110, and the two mounting covers 120 respectively cover and seal the first mounting opening and the second mounting opening. The clamping portion S is in limit cooperation with the relay housing 100 and / or the corresponding stationary contact assembly 400b in the first direction, the second direction, and the third direction, thereby improving the installation stability of the corresponding partition member.

[0189] Further, at least one mounting cover 120 is provided with a partition wall 301. In this way, not only can the partition wall 301 be provided on the mounting base 110, but also the partition wall 301 can be provided on the mounting cover 120, which is conducive to jointly improving the electrical isolation effect between the adjacent lead-out ends provided correspondingly by the partition walls 301 on the mounting cover 120 and the mounting base 110.

[0190] The first partition member 10 and the third partition member 30 are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane. The second partition member 20 and the fourth partition member 40 are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane. This mirror-symmetric structure is conducive to the assembly of each structure of the relay and improves the space utilization rate, which is conducive to realizing the miniaturization of the relay.

[0191] Combined with Figure 15 and Figure 16 As shown, the first partition member 10 includes a first blocking wall 11 and a second blocking wall 12. The first blocking wall 11 protrudes from the outer wall surface of the first side wall 100a. The first blocking wall 11 can be located between the outer wall surface of the first side wall 100a and the terminal one D1, or the first blocking wall 11 can be located between the outer wall surface of the first side wall 100a and the terminal three D3. The second blocking wall 12 is connected to the first blocking wall 11. The second blocking wall 12 is located between the terminal one D1 and the terminal three D3 in the first direction, thereby increasing the creepage distance between the terminal one D1 and the terminal three D3 in the first direction. Therefore, in this embodiment, under the shielding of the first blocking wall 11 and the second blocking wall 12, the creepage distance between the surface of the terminal one D1 and the terminal three D3 facing the outer wall surface of the first side wall 100a is increased.

[0192] The first partition member 10 further includes a third blocking wall 13. The third blocking wall 13 is connected to the inner sides of the first blocking wall 11 and the second blocking wall 12 in the third direction (i.e., the side closer to the center of the mounting base 110 in the third direction). The first blocking wall 11, the second blocking wall 12 and the third blocking wall 13 are connected and jointly enclose a first receiving groove 10a with a first opening. The terminal one D1 or the terminal three D3 is received in the first receiving groove 10a and is exposed from the first opening to the outside of the first partition member 10. In this embodiment, due to the provision of the third blocking wall 13, the creepage distance of the inner sides of the terminal one D1 and the terminal three D3 in the first direction can be increased, avoiding current breakdown at the corner positions of the terminal one D1 and the terminal three D3. By providing the first opening, the lead-out ends at the first receiving groove 10a can be reliably externally connected.

[0193] Combined with Figure 17 and Figure 18As shown, the second partition member 20 includes a fourth partition wall 21 and a fifth partition wall 22. The fourth partition wall 21 protrudes from the outer wall surface of the first side wall 100a. The fourth partition wall 21 may be located between the outer wall surface of the first side wall 100a and the second terminal D2, or the fourth partition wall 21 may be located between the outer wall surface of the first side wall 100a and the fourth terminal D4. The fifth partition wall 22 is connected to the fourth partition wall 21. The fifth partition wall 22 is located between the second terminal D2 and the fourth terminal D4 in the first direction, thereby increasing the creepage distance between the second terminal D2 and the fourth terminal D4 in the first direction. Therefore, in this embodiment, under the shielding of the fourth partition wall 21 and the fifth partition wall 22, the creepage distance between the surface of the second terminal D2 and the surface of the fourth terminal D4 facing the outer wall surface of the first side wall 100a is increased.

[0194] The second partition member 20 further includes a sixth partition wall 23. The sixth partition wall 23 is connected to the inner sides of the fourth partition wall 21 and the fifth partition wall 22 in the third direction (i.e., the side closer to the center of the mounting base 110 in the third direction), and the fourth partition wall 21, the fifth partition wall 22 and the sixth partition wall 23 are connected and jointly enclose a second receiving groove 20a having a second opening. The second terminal D2 or the fourth terminal D4 is received in the second receiving groove 20a and exposed from the second opening to the second partition member 20. In this embodiment, due to the provision of the sixth partition wall 23, the creepage distance of the inner sides of the second terminal D2 and the fourth terminal D4 in the first direction can be increased, and current breakdown at the corner positions of the second terminal D2 and the fourth terminal D4 can be avoided. By providing the second opening, the lead-out end at the second receiving groove 20a can be reliably externally connected.

[0195] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0196] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A relay, characterized in that: include: A housing having a first side wall; A lead-out terminal assembly, comprising at least four lead-out terminals, wherein the at least four lead-out terminals are adapted to form at least three terminal groups, each of the terminal groups comprises two lead-out terminals adapted to be electrically connected or disconnected with each other, each of the lead-out terminals is exposed outside the first side wall, and the orthographic projections of the lead-out terminals on the outer wall surface of the first side wall are spaced apart from each other; The isolation structure is fixed relative to the shell, the isolation structure at least partially protrudes from the outer wall surface of the first side wall, and is used to electrically isolate at least part of the lead-out ends that are adjacently arranged.

2. The relay according to claim 1, characterized in that: A surface of each lead-out end facing away from the first side wall constitutes a connection surface for external connection; and each connection surface is located in the same plane.

3. The relay according to claim 1, characterized in that: Each of the lead-out ends is in a sheet shape and is parallel to the outer wall surface of the first side wall.

4. The relay according to claim 1, characterized in that: It also includes a contact unit, which includes at least two moving contact components; the moving contact components are linked to each other and can switch between an on state and an off state, so that the lead-out terminal component has a terminal group with opposite on and off states.

5. The relay according to claim 4, characterized in that: The lead-out terminal assembly has at least one terminal group consisting of four lead-out terminals, and the four lead-out terminals in the terminal group are suitable for forming three terminal groups, wherein the on-off states of two of the terminal groups are the same and opposite to the on-off state of the other terminal group.

6. The relay according to claim 5, characterized in that: The lead-out terminal assembly has at least two terminal groups, and the lead-out terminals included in any two terminal groups are independent of each other.

7. The relay according to claim 5, characterized in that: In the same terminal group, the three terminal groups consisting of the four lead-out terminals are respectively a first terminal group, a second terminal group and a third terminal group; The lead-out terminal assembly has at least two terminal groups; each terminal group shares two lead-out terminals, and the two shared lead-out terminals are respectively a first terminal and a second terminal; In each of the terminal groups, the first terminal is suitable for constituting the first terminal group with one of the other two lead-out terminals except the second terminal, the second terminal is suitable for constituting the second terminal group with the other of the other two lead-out terminals except the first terminal, and the other two lead-out terminals except the first terminal and the second terminal in the same terminal group are suitable for constituting the third terminal group.

8. The relay according to claim 1, characterized in that: The relay includes at least two lead-out terminal assemblies; each of the lead-out terminal assemblies is arranged along a first direction parallel to the first side wall, and each lead-out terminal of each lead-out terminal assembly corresponds to each lead-out terminal of other lead-out terminal assemblies one by one, and in different lead-out terminal assemblies, each corresponding lead-out terminal is suitable for being connected to the outside as a common terminal of a parallel switch in the relay.

9. The relay according to any one of claims 4 to 7, characterized in that: The contact unit includes a stationary contact component corresponding to the moving contact component one by one; the stationary contact component is fixed relative to the shell, and each of the stationary contact components includes two stationary contacts for input current and output current respectively, and each of the stationary contacts is connected to one of the lead-out terminals respectively; the moving contact component is used to disconnect or conduct the electrical path of the corresponding two stationary contacts.

10. The relay according to claim 9, characterized in that: In the contact unit, when the on-off states of the static contact components are the same and the dynamic contact components disconnect the electrical path of the corresponding two static contact parts, the two adjacent dynamic contact components connect the electrical path between each of the static contact parts in the corresponding two adjacent static contact components.

11. The relay according to claim 9, characterized in that: In the contact unit, each of the stationary contact components is arranged along a second direction intersecting the first side wall, and each of the moving contact components is arranged along the second direction.

12. The relay according to claim 11, characterized in that: Each of the moving contact components includes a moving contact, one end of which is fixed to one of the corresponding stationary contacts, and the other end of which is used to be electrically connected or disconnected with the other corresponding stationary contact.

13. The relay according to claim 12, characterized in that: When the moving contact in each moving contact component is disconnected from the corresponding static contact in the static contact component, at least one of the moving contact in the moving contact component is electrically connected to one of the static contact in the adjacent static contact component to conduct an electrical path between each of the static contact in two adjacent static contact components.

14. The relay according to claim 13, characterized in that: Each moving contact assembly includes two moving contacts, the fixed ends of the two moving contacts are respectively fixedly connected to the two static contacts, and the movable ends of the two moving contacts are respectively used to be electrically connected or disconnected with the other static contact.

15. The relay according to claim 12, characterized in that: The second direction is perpendicular to the first side wall; and the movement direction of the moving contact member in the moving contact assembly is parallel to the second direction.

16. The relay according to claim 11, characterized in that In each of the contact units, the number of the stationary contact components and the number of the moving contact components are both two.

17. The relay according to claim 16, characterized in that The number of the lead-out terminal assemblies and the number of the contact units are both two; each of the lead-out terminal assemblies is arranged along a first direction perpendicular to the second direction and parallel to the first side wall, the lead-out terminals of the two lead-out terminal assemblies correspond to each other one by one, and in the two lead-out terminal assemblies, the lead-out terminals corresponding to each other are suitable for external connection as common terminals of parallel switches in the relay.

18. The relay according to claim 17, characterized in that In each of the contact units, the two lead ends corresponding to one of the static contact components are respectively the first lead end and the second lead end, and the two lead ends corresponding to the other static contact component are respectively the third lead end and the fourth lead end; the first lead end and the second lead end are arranged along a third direction; the third lead end and the fourth lead end are arranged along the third direction; the first lead end and the third lead end are arranged along the first direction; the second lead end and the fourth lead end are arranged along the first direction; the third direction is perpendicular to the first direction and the second direction; In the two lead-out terminal assemblies, the two third lead-out terminals are arranged along the first direction and located between the two first lead-out terminals along the first direction, and the two fourth lead-out terminals are arranged along the first direction and located between the two second lead-out terminals along the first direction.

19. The relay according to claim 18, characterized in that The shell includes a mounting seat, and the mounting seat has a first mounting cavity and a second mounting cavity arranged along the first direction. The moving contact components of the two contact units can be respectively installed into the first mounting cavity and the second mounting cavity from both ends of the mounting seat in the first direction, and each static contact extends out of the shell along the third direction and is bent along the second direction to be connected to the corresponding lead-out end.

20. The relay according to claim 19, characterized in that The side wall of the mounting seat is provided with a groove for each of the static contacts to extend out, and each of the grooves extends to the inner wall surface and the outer wall surface of the mounting seat, and each forms an inner notch and an outer notch on the inner wall surface and the outer wall surface respectively, and the depth of the inner notch of the groove connected to the first mounting cavity is less than or equal to 1 / 3 of the depth of the first mounting cavity, and the depth of the inner notch of the groove connected to the second mounting cavity is less than or equal to 1 / 3 of the depth of the second mounting cavity.

21. The relay according to claim 17, characterized in that The two lead-out terminal assemblies are arranged in a mirror image with a plane perpendicular to the first direction as a symmetry plane.

22. The relay according to claim 18, characterized in that The isolation structure includes four barrier members, each of which is fixed relative to the housing and is used to electrically isolate two lead-out terminals that are adjacently arranged in different terminal groups and are suitable for connecting to different ends of an external circuit along a first direction.

23. The relay according to claim 22, characterized in that The isolation structure further includes a partition wall protruding from the outer wall surface of the first side wall; the partition wall extends along the first direction and is located between the two lead-out ends of each terminal group.

24. The relay according to claim 1, characterized in that The isolation structure includes a partition wall integrally formed on the first side wall, the partition wall is protruding from the outer wall surface of the first side wall, and can electrically isolate at least two adjacent lead-out ends.

25. The relay according to claim 24, characterized in that The partition wall is provided between any two adjacent lead-out terminals; And / or, the partition wall is provided with a partition groove, and at least two parallel partition walls are separated by the partition groove.

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