relay

Abstract

This application relates to a relay, including a housing, a lead assembly, and an isolation structure. The lead assembly includes at least four leads adapted to form at least three terminal groups. Each terminal group includes two leads adapted to be electrically connected or disconnected. Each lead protrudes from a first sidewall, and the orthographic projections of each lead on the outer surface of the first sidewall are spaced apart from each other. The isolation structure is fixed relative to the housing, at least partially protruding from the outer surface of the first sidewall, and provides electrical isolation for at least partially adjacent leads. The relay of this application can achieve both electrical isolation performance and reduce the area occupied when connected to a circuit board.

Description

Technical Field

[0001] This application relates to the field of power distribution control technology, and in particular to a relay. Background Technology

[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 commonly used in automatic control circuits and is essentially an "automatic switch" that uses a smaller current to control a larger current. Therefore, relays play roles in automatic adjustment, safety protection, and circuit switching, and are widely used in industrial control, home appliances, and automobiles. With the increasing application of relays in various products, customers have placed more demands on their performance. For example, they require relays to have lower contact resistance.

[0003] In related technologies, different terminals of a relay are typically placed on different sides of the housing to meet electrical isolation requirements. This structure occupies a large space, which is not conducive to relay miniaturization and makes it difficult to connect to external circuit boards. Placing different terminals on the same side of the housing also requires increasing the electrical and creepage distances by increasing the distance between the terminals. This results in a large area occupied on the circuit board when the terminals are connected to an external circuit board, and this method of increasing the distance between terminals is also not conducive to relay miniaturization. Utility Model Content

[0004] Therefore, it is necessary to provide a relay that addresses the issue of how to balance electrical isolation performance with minimizing the area occupied when connecting to a circuit board.

[0005] This application provides a relay, including:

[0006] The housing has a first sidewall;

[0007] The lead-out assembly includes at least four leads, the at least four leads being adapted to form at least three terminal groups, each terminal group including two leads adapted to be electrically connected or disconnected from each other, each lead being exposed outside the first sidewall, and the orthographic projections of each lead on the outer wall surface of the first sidewall being spaced apart from each other.

[0008] An isolation structure is fixed relative to the housing, the isolation structure at least partially protruding from the outer wall surface of the first sidewall, and is used for electrical isolation of at least partially adjacent leads.

[0009] In the aforementioned relay, each lead assembly has at least four leads configured to form at least three terminal groups. That is, some terminal groups share the same lead. Compared to having two leads for each terminal group for separate current input and output, this design provides more functionalities to the leads, allowing for connection to more complex control logic circuits while saving space and reducing external connection complexity. Since each lead is exposed outside the first sidewall of the housing, it facilitates connection to external circuit boards. Because the orthographic projections of each lead on the outer surface of the first sidewall are spaced apart, the leads do not overlap in the direction perpendicular to the outer surface of the first sidewall. This reduces the likelihood of space wastage and poor electrical isolation associated with stacked leads on the outer surface perpendicular to the first sidewall. Furthermore, since the isolation structure protrudes from the outer wall surface of the first sidewall and is used for electrical isolation of at least some of the adjacent leads, the adjacent leads can be arranged as close as possible, making the adjacent leads arranged more compactly on the outer wall surface of the first sidewall, which helps to save space and reduce the area occupied when the relay is connected to the external circuit board.

[0010] In some embodiments, the side of each lead-out terminal facing away from the first sidewall constitutes a connection surface for external connection; all connection surfaces are located in the same plane. This facilitates the connection surface of each lead-out terminal of the relay to external devices such as external circuit boards.

[0011] In some embodiments, each lead is plate-shaped and parallel to the outer wall surface of the first sidewall. This provides each lead with a large connection area, facilitating external connection while ensuring a large current-carrying area, reducing heat generation, and making the lead assembly more suitable for high-voltage or high-current environments. Furthermore, the plate-shaped leads reduce space occupation in the direction perpendicular to the first sidewall, and this parallel-to-the-outer-wall arrangement ensures a neat layout of the leads relative to the first sidewall, facilitating relay connection and improving connection reliability. Moreover, this structure is more adaptable to limited installation spaces, such as the narrow battery compartment in a car; additionally, it facilitates the compact side-by-side installation of multiple relays.

[0012] In some embodiments, a contact unit is further included, the contact unit comprising at least two moving contact components; each of the moving contact components is interconnected and can switch between an on and off state, such that the lead-out terminal component has a terminal group with opposite on and off states. Compared to configuring a separate drive section for power input for each moving contact component, this technical solution of interconnecting the moving contact components simplifies the structure of the drive section; furthermore, this embodiment utilizes terminal groups with opposite on and off states to meet the on / off control requirements of different circuits.

[0013] In some embodiments, the lead assembly has at least one terminal group consisting of four leads, wherein the four leads in the terminal group are adapted to form three terminal sets, wherein two of the terminal sets have the same on / off state and are opposite to the on / off state of the other terminal set. Thus, the on / off control logic of the three terminal sets has multiple possibilities, enriching the application scenarios of the relay and enabling on / off control in different circuits.

[0014] In some embodiments, the lead assembly has at least two terminal groups, with leads included in any two terminal groups being independent of each other. Because it has at least two terminal groups, the lead assembly can provide more control combinations and adapt to external circuits with more complex control logic, thus offering greater applicability.

[0015] In some embodiments, within the same terminal group, the three terminal groups consisting of the four leads are respectively the first terminal group, the second terminal group, and the third terminal group;

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

[0017] In each terminal group, the first terminal is adapted to form a first terminal group with one of the other two leads (excluding the second terminal), the second terminal is adapted to form a second terminal group with the other of the other two leads (excluding the first terminal), and the other two leads in the same terminal group (excluding the first and second terminals) are adapted to form a third terminal group. In this embodiment, by sharing the first and second terminals, more terminal groups are constructed, thereby providing more control combinations without increasing the number of leads, thus maintaining relay miniaturization while enriching the application scenarios of the relay.

[0018] In some embodiments, the relay includes at least two lead-out components; each lead-out component is arranged along a first direction parallel to the first sidewall, and each lead-out terminal of each lead-out component corresponds one-to-one with each lead-out terminal of the other lead-out components. Furthermore, the corresponding leads of different lead-out components are adapted to serve as common terminals for parallel switches within the relay for external connection. By providing at least two lead-out components, parallel switches (equivalent to moving contact components) can be configured inside the relay corresponding to each lead-out component, thereby reducing the overall contact resistance of the relay. This makes the relay more suitable for high-voltage or high-current applications, reduces the probability of relay conduction failure, and improves the reliability of the relay.

[0019] In some embodiments, the contact unit includes stationary contact components that correspond one-to-one with the moving contact components; the stationary contact components are fixed relative to the housing, and each stationary contact component includes two stationary contacts for input current and output current respectively, each stationary contact being connected to one of the leads; the moving contact components are used to disconnect or connect the electrical path between the corresponding two stationary contacts. In this embodiment, the stationary contact components can be used to connect or disconnect the corresponding leads under the on / off control of the corresponding moving contact components, thereby meeting the usage requirements of the relay. Moreover, since the stationary contact components are fixed relative to the housing, they are less likely to loosen during relay use, thus ensuring the stability of each lead and the reliability of the electrical connection.

[0020] In some embodiments, in the contact unit, the on / off states of each of the stationary contact components are the same, and when each of the moving contact components disconnects the electrical path between the corresponding two stationary contacts, two adjacent moving contact components connect the electrical path between one of the corresponding adjacent two stationary contact components. Thus, the on / off control of each moving contact component can be used to achieve series-parallel switching, enabling the relay to have a series-parallel switching function to adapt to certain special application scenarios, such as in automotive battery management systems to optimize the charging and discharging function of the battery pack.

[0021] In some embodiments, in the contact unit, each of the stationary contact components is arranged along a second direction intersecting the first sidewall, and each of the moving contact components is arranged along the second direction. Thus, the arrangement direction of each stationary contact component is consistent with the arrangement direction of each moving contact component, facilitating the adjacent arrangement of each stationary contact component and its corresponding moving contact component. This improves the compactness of the layout, achieves miniaturization of the relay, and reduces the amount of conductive material consumed by each stationary contact component for electrical lead-out of the housing, thereby reducing costs. Since the arrangement direction of each stationary contact component and each moving contact component is along the second direction, the installation direction of each stationary contact component and each moving contact component is usually parallel to the first sidewall to ensure that each stationary contact component and each moving contact component can be supported. On this basis, the first sidewall can be used to form one side of the housing opening (for the installation of each stationary contact component and each moving contact component). Each stationary contact component is connected to the first sidewall from the opening. The shape and size of each stationary contact component and each lead-out end can be flexibly set as needed, and will not be restricted by the perforation on the first sidewall because it needs to extend vertically out of the first sidewall. Therefore, the area of ​​each stationary contact component and each lead-out end can be increased as needed to adaptively increase the area of ​​the connection surface of the lead-out end, thereby achieving reliable connection and reducing heat generation.

[0022] In some embodiments, 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 is used to electrically connect or disconnect with another corresponding stationary contact. This type of moving contact uses an oscillating mechanism to achieve on / off control, resulting in a simple structure and small footprint, which is beneficial for the miniaturization of relays.

[0023] In some embodiments, when the moving contact in each of the moving contact components is disconnected from the stationary contact in the corresponding stationary contact component, at least one moving contact in the moving contact component is electrically connected to one of the stationary contacts in an adjacent stationary contact component, so as to establish an electrical path between one of the stationary contacts in each of the two adjacent stationary contact components.

[0024] In some embodiments, each moving contact assembly includes two moving contacts, the fixed ends of which are respectively fixed to two stationary contacts, and the movable ends of which are respectively used to electrically connect or disconnect with the other stationary contact. Thus, the two moving contacts in the same moving contact assembly achieve a simple parallel structure to reduce contact resistance, while utilizing the electromagnetic force generated between them when current flows through them to increase their contact pressure and enhance their ability to withstand high fault currents, making the relay product suitable for high-voltage or high-current applications.

[0025] In some embodiments, the second direction is perpendicular to the first sidewall; the direction of motion of the movable contact in the movable contact assembly is parallel to the second direction. Thus, in the second direction, the movable contact can obtain sufficient space to meet the contact action requirements without needing to provide space for the movable contact to perform contact actions in a direction perpendicular to the second direction. This facilitates the use of space perpendicular to the second direction (such as the first or a third direction) to arrange the movable contact, resulting in a compact arrangement of the movable contacts, which is beneficial for miniaturization design, while also ensuring the necessary space for contact actions.

[0026] In some embodiments, each contact unit contains two stationary contact components and two moving contact components. Thus, by switching the on / off states of the two moving contact components, the electrical path between the leads connected to the stationary contact components is broken or connected. This allows the terminal group to be configured such that two terminal groups have the same on / off state, and the on / off state of the other terminal group is opposite. This provides multiple possibilities for the on / off control logic of the three terminal groups, enriching the application scenarios of the relay and enabling on / off control in different circuits.

[0027] In some embodiments, the number of lead-out components and contact units is two. Each lead-out component is arranged along a first direction perpendicular to the second direction and parallel to the first sidewall. The leads of the two lead-out components correspond one-to-one with each other, and the corresponding leads of the two lead-out components are adapted to be connected externally as the common terminal of the parallel switches in the relay. By arranging the lead-out components along the first direction, the needs of the corresponding moving contact component in each contact unit to input or output current through the stationary contact component are accommodated. Furthermore, when installing the contact unit, the number of both lead-out components and moving contact components is two, which provides a structural basis for installation from both ends of the mounting base of the housing in the first direction. This allows the mounting base to only need to have grooves opened at the positions of the two corresponding lead-out components, thereby reducing the depth of each groove on the mounting base, which helps maintain the structural strength of the mounting base and reduces the probability of deformation under stress. Correspondingly, since the leads of the two lead-out components correspond one-to-one with each other, and the leads of the two lead-out components are suitable for external connection as the common terminal of the parallel switches in the relay, the internal components of the relay can be equipped with parallel moving contact components corresponding to each lead-out component, thereby reducing the overall contact resistance of the relay, making the relay more suitable for high voltage or high current applications, reducing the probability of relay conduction failure, and improving the reliability of the relay.

[0028] In some embodiments, in each contact unit, the two leads corresponding to one of the stationary contact components are respectively a first lead and a second lead, and the two leads corresponding to the other stationary contact component are respectively a third lead and a fourth lead; the first lead and the second lead are arranged along a third direction; the third lead and the fourth lead are arranged along a third direction; the first lead and the third lead are arranged along a first direction; the second lead and the fourth lead are arranged along the first direction; the third direction is perpendicular to the first direction and the second direction; in the two lead-out component assemblies, the two third leads are arranged along the first direction and located between the two first leads along the first direction, and the two fourth leads are arranged along the first direction and located between the two second leads along the first direction. In this embodiment, by reasonably arranging the positions of each lead, the lead can be easily connected to the corresponding stationary contact, and while meeting the electrical connection requirements of the relay, the lead is placed adjacent to the stationary contact it is connected to, so as to reduce the amount of conductive material used in the lead.

[0029] In some embodiments, the housing includes a mounting base having 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 inserted into the first mounting cavity and the second mounting cavity from both ends of the mounting base in the first direction. Each stationary contact extends out of the housing along the third direction and is bent along the second direction to connect with the corresponding lead-out end. In this embodiment, the moving contact components of the two contact units can be respectively inserted into the first mounting cavity and the second mounting cavity from both ends of the mounting base in the first direction. This assembly method is simple, and the mounting base only needs to provide installation space for the relevant structure at corresponding positions and meet the relay usage requirements. No space needs to be reserved at other positions, ensuring the overall structural strength of the mounting base and making the mounting base less prone to deformation, thereby improving the reliability of the relay.

[0030] In some embodiments, the sidewall of the mounting base is provided with grooves for the extension of each of the stationary contacts. Each groove extends to the inner and outer wall surfaces of the mounting base, and each groove forms an inner opening and an outer opening on the inner and outer wall surfaces, respectively. The depth of the inner opening of the groove communicating 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 opening of the groove communicating with the second mounting cavity is less than or equal to 1 / 3 of the depth of the second mounting cavity. Controlling the groove depth helps maintain the structural strength of the mounting base, avoiding excessively deep grooves that would cause at least one side of the sidewall of the mounting base to become an isolated, unsupported structure, thereby avoiding affecting the overall structural strength of the mounting base and improving the reliability of the relay. Therefore, adopting the solution of this embodiment can improve the structural strength of the sidewall of the mounting base and achieve physical isolation and independent stress bearing for different contact units. This makes the mounting base less prone to deformation, thereby enhancing the reliability of the relay.

[0031] In some embodiments, the two lead-out components are arranged in a mirror image with a plane perpendicular to the first direction as their plane of symmetry. This mirror-symmetric structure simplifies the processing and installation of the components, facilitates the assembly of the relay's various structures, and improves space utilization, thus enabling the miniaturization of the relay.

[0032] In some embodiments, the isolation structure includes four spacers, each spacer fixed relative to the housing, and used to electrically isolate two leads of adjacent terminals in different terminal groups suitable for external connection circuits along a first direction. In this embodiment, the spacers increase the creepage distance between corresponding adjacent leads to improve electrical isolation performance.

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

[0034] In some embodiments, the isolation structure includes a partition wall integrally formed on the first sidewall, the partition wall protruding from the outer surface of the first sidewall and capable of electrically isolating at least two adjacent leads. In this embodiment, since the partition wall is integrally formed with the first sidewall, the connection between the partition wall and the first sidewall is stable, and no other connecting parts are needed to connect them, thus simplifying the assembly process. Because the partition wall protrudes from the outer surface of the first sidewall and can electrically isolate at least two adjacent leads, in this embodiment, the partition wall protruding from the outer surface of the first sidewall can increase the creepage distance between at least two adjacent leads, thereby improving the electrical isolation effect between the leads.

[0035] In some embodiments, a partition wall is provided between any two adjacent leads;

[0036] And / or, the partition wall has a slot, and the slot divides at least two parallel partition walls. In this embodiment, since the partition wall is provided between any two adjacent leads, there is good electrical isolation between any two adjacent leads, allowing adjacent leads to be positioned closer together, which is beneficial for relay miniaturization. Because the partition wall is divided by the slot, the creepage distance between adjacent leads is further increased, thus improving electrical isolation performance. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of a relay in one embodiment of this application.

[0038] Figure 2 This is a schematic diagram of the contact unit and lead-out terminal assembly of a relay according to one embodiment.

[0039] Figure 3 This is a schematic diagram showing the correspondence between the leads in the two terminal groups when the relay lead assembly of another embodiment of this application has two terminal groups, wherein the leads connected by dashed lines represent shared leads.

[0040] Figure 4 This is a circuit diagram of a relay used in the power distribution system of a vehicle according to one embodiment of this application.

[0041] Figure 5 This is a three-dimensional structural diagram of a relay according to another embodiment of this application.

[0042] Figure 6 This is a schematic diagram of the exploded structure of a relay in one embodiment of this application.

[0043] Figure 7 For this application Figure 6The diagram shows the structure of the relay in which the electromagnetic system and contact unit are assembled into the mounting base.

[0044] Figure 8 This is a partial structural diagram of a relay according to one embodiment of this application.

[0045] Figure 9 for Figure 8 The diagram shown is a top view of part of the relay structure.

[0046] Figure 10 This is a schematic diagram of the structure of the moving contact of the contact unit in a relay according to one embodiment.

[0047] Figure 11 This is a top view of a relay according to one embodiment, showing the electromagnetic system and contact unit assembled in a mounting base.

[0048] Figure 12 For a relay edge in one embodiment of this application Figure 11 Schematic diagram of the cross-sectional structure of the middle II line.

[0049] Figure 13 This is a schematic diagram of the mounting base of the housing in a relay according to one embodiment of this application.

[0050] Figure 14 for Figure 13 A schematic diagram of the relay mounting bracket from another perspective is shown.

[0051] Figure 15 This is a schematic diagram of the structure of a relay in one embodiment of the present application, in which a first partition is provided between stationary contact one and stationary contact three.

[0052] Figure 16 for Figure 15 The diagram shown is an exploded view of the stationary contact and the first barrier of the relay.

[0053] Figure 17 This is a schematic diagram of a relay according to an embodiment of the present application, in which a second partition is provided between stationary contact two and stationary contact four.

[0054] Figure 18 for Figure 17 The diagram shown is an exploded view of the stationary contact four and the second barrier of the relay.

[0055] Figure label:

[0056] 100. Housing; 100a. First sidewall; 110. Mounting base; 111. First mounting cavity; 112. Second mounting cavity; 113. Third mounting cavity; 1101. Base body; 1101a. Sidewall portion; 1101b. Bottom wall portion; 1102. First mounting plate; 1103. Second mounting plate; 120. Mounting cover; C1. Recess one; C2. Recess two; C3. Recess three; C4. Recess four; C5. Slot 5; C6, Groove 6; C7, Groove 7; C8, Groove 8; 200, Lead-out terminal assembly; 2001, First lead-out terminal assembly; 2002, Second lead-out terminal assembly; 201, First lead-out terminal; 202, Second lead-out terminal; 203, Third lead-out terminal; 204, Fourth lead-out terminal; 200a, First terminal group; 200b, Second terminal group; 200c, Third terminal group; D1, Terminal 1; D2, Terminal 2;

[0057] D3, Terminal 3; D4, Terminal 4; D5, Terminal 5; D6, Terminal 6; D7, Terminal 7; D8, Terminal 8; 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 Assembly Contact; 4032, Second stationary contact; 4041, Third stationary contact; 4042, Fourth stationary contact; P1, Stationary contact one; P2, Stationary contact two; P3, Stationary contact three; P4, Stationary contact four; P5, Stationary contact five; P6, Stationary contact six; P7, Stationary contact seven; P8, Stationary contact eight; 410, Moving contact; 411, Fixed end; 412, Movable end; 413, Flow guide branch; 414, Gap; 410a, stationary contact; 410b, moving contact; 4011, first moving contact; 4021, second moving contact; 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 set of pushing clips; 611, first pushing clip; 620, second set of pushing clips; 621, second pushing clip; 10, first partition; 10a, first receiving groove; 11, first baffle; 12, second baffle; 13, third baffle; 20, second partition; 20a, second receiving groove; 21, fourth baffle; 22, fifth baffle; 23, sixth baffle; 30, third partition; 40, fourth partition; S, clamping part; SC, clamping groove. Detailed Implementation

[0058] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0059] In the description of this application, it should be understood that if terms such as "top", "bottom", "inner", "outer", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] It should be noted that if a component is described as "fixed to" or "attached to" another component, it can be directly on the other component or there may be an intervening component. If a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0062] See Figure 1 As shown, one embodiment of this application provides a relay, including a housing 100 and a lead-out assembly 200. The lead-out assembly 200 includes at least four leads, for example... Figure 1 The first lead 201, second lead 202, third lead 203, and fourth lead 204 shown, at least four leads, are adapted to form at least three terminal groups, each terminal group including two leads adapted to be electrically connected or disconnected from each other, so as to... Figure 1In one possible example of the layout shown, the first lead 201, the second lead 202, the third lead 203, and the fourth lead 204, as well as the first lead 201 and the third lead 203, can each constitute three terminal groups capable of establishing independent circuits. Of course, it is worth noting that the first lead 201 and the third lead 203, which are 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 201 is electrically connected to the second lead 202, its electrical connection with the third lead 203 needs to be disconnected. Similarly, when the third lead 203 is electrically connected to the fourth lead 204, its electrical connection with the first lead 201 needs to be disconnected.

[0063] Each lead-out is exposed outside the same sidewall (hereinafter referred to as "first sidewall 100a") of the housing 100, thereby facilitating connection to an external circuit board. The orthographic projections of each lead-out on the outer wall surface of the first sidewall 100a are spaced apart from each other. Understandably, the orthographic projection of the lead-out on the outer wall surface of the first sidewall 100a refers to the projection of the lead-out along a direction perpendicular to the outer wall surface of the first sidewall 100a. Therefore, the leads do not overlap in the direction perpendicular to the outer wall surface of the first sidewall 100a. Compared to the problem of wasted space and poor electrical isolation caused by the stacked arrangement of leads on the outer wall surface perpendicular to the first sidewall 100a, the technical solution of this application can reduce the probability of such problems occurring.

[0064] In this embodiment, since the number of terminal groups formed by the leads in the lead assembly is large, and each terminal group may be adapted to different operating conditions, it is necessary to provide reliable electrical isolation for each lead to ensure reliable electrical isolation between the different operating conditions matched by each terminal group. Therefore, in this embodiment, the relay also includes an isolation structure 300, which is fixed relative to the housing 100 and protrudes from the outer wall surface of the first sidewall 100a, serving to electrically isolate at least partially adjacent leads. In this application, electrical isolation refers to increasing the creepage distance rather than complete spatial isolation. Because the isolation structure 300 protrudes from the outer wall surface of the first sidewall 100a in the relay of this embodiment, and increases the creepage distance between at least partially adjacent leads, the electrical isolation effect can be improved. Therefore, adjacent leads can be arranged as close as possible, making the arrangement of adjacent leads on the outer wall surface of the first sidewall 100a more compact, thus saving space and reducing the area occupied when the relay is connected to an external circuit board.

[0065] For ease of understanding, the side of the lead-out terminal used for external connections (such as connection to an external circuit board) will be referred to as the "connection surface".

[0066] Continue to combine Figure 1As shown, the side of each lead-out terminal facing away from the first sidewall 100a forms a connecting surface. Each connecting surface is located in the same plane, which facilitates connecting the connecting surfaces of each lead-out terminal of the relay to external devices such as external circuit boards. In this embodiment, the side of each lead-out terminal facing away from the first sidewall 100a can also be understood as the side of each lead-out terminal facing the same direction as the outer wall surface of the first sidewall 100a.

[0067] In some embodiments, each lead is plate-shaped and parallel to the outer wall surface of the first sidewall 100a. This provides each lead with a large connection area, facilitating external connections while ensuring a large current-carrying area, reducing heat generation, and making the lead assembly 200 more suitable for high-voltage or high-current applications. Furthermore, the plate-shaped leads reduce space occupancy in the direction perpendicular to the first sidewall 100a, and this parallel alignment of the leads with the outer wall surface of the first sidewall 100a ensures a neat layout, facilitating relay connections and improving connection reliability. Moreover, this structure is more adaptable to limited installation spaces, such as the narrow battery compartment in a car; it also facilitates the compact side-by-side installation of multiple relays.

[0068] by Figure 1 A three-dimensional Cartesian coordinate system is established from the perspective of X, Y, and Z, which are the first direction, the second direction, and the third direction, respectively. The first direction, the second direction, and the third direction are all perpendicular to each other. Among them, the first direction and the third direction are parallel to the outer wall surface of the first sidewall 100a, and the second direction is perpendicular to the outer wall surface of the first sidewall 100a.

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

[0070] For ease of description, any two leads that are suitable for electrical connection or disconnection are called a "terminal group". It should be noted that one of the two leads in the same terminal group is used for input current and the other is used for output current, so as to enable 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 sidewall 100a. The partition wall 301 protrudes from the outer wall surface of the first sidewall 100a and is capable of electrically isolating at least two adjacent leads. In this embodiment, since the partition wall 301 is integrally formed with the first sidewall 100a, the connection between the partition wall 301 and the first sidewall 100a is stable, and no other connecting parts are needed to connect the two, thus simplifying the assembly process. Since the partition wall 301 protrudes from the outer wall surface of the first sidewall 100a and is capable of electrically isolating at least two adjacent leads, in this embodiment, the partition wall 301 protruding from the outer wall surface of the first sidewall 100a can increase the creepage distance between at least two adjacent leads, thereby improving the electrical isolation effect between the leads.

[0072] The partition 301 can be located between the first lead 201 and the second lead 202 to electrically isolate the first lead 201 and the second lead 202, or it can be located between the third lead 203 and the fourth lead 204 to electrically isolate the third lead 203 and the fourth lead 204. In some embodiments, a portion of the partition 301 is located between the first lead 201 and the second lead 202, and another portion is located between the third lead 203 and the fourth lead 204. In this way, the partition 301 can simultaneously increase the creepage distance between the first lead 201 and the second lead 202, and between the third lead 203 and the fourth lead 204, thereby improving the electrical isolation performance.

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

[0074] In some embodiments, the isolation structure 300 includes multiple partitions 301, which may be independently installed or integrally formed. The number and location of the partitions 301 are not limited here, as long as the partitions 301 can increase the creepage distance between the leads located on both sides.

[0075] Furthermore, a partition wall 301 is provided between any two adjacent leads. In this way, there is good electrical isolation between any two adjacent leads, which allows the adjacent leads to be placed closer to each other, thus facilitating the miniaturization of the relay.

[0076] In some embodiments, the partition wall 301 has a slot (not shown) that divides at least two parallel partition walls. The partition walls that separate the partition wall 301 further increase the creepage distance between adjacent leads, thus improving electrical isolation performance.

[0077] It should be noted that, in the embodiments of this application, one terminal group and another terminal group can share certain leads, thus forming more terminal groups and meeting the switching control needs of more scenarios.

[0078] In some implementations, at least four leads are adapted to form at least three terminal groups, that is, some of the terminal groups share the same leads. Compared to each terminal group having two leads for connecting and drawing current respectively, this design gives the leads more functionality, allowing them to be used to connect circuits with more complex control logic while saving space and reducing the complexity of external connections.

[0079] For example, combining Figure 2 As shown, the first lead 201 and the fourth lead 204 form one terminal group, the second lead 202 and the third lead 203 form another terminal group, and the third lead 203 and the fourth lead 204 form a third terminal group. The lead assembly 200 serves as the component for the relay's external electrical connection, and the on / off state of the terminal groups in the lead assembly 200 can be configured according to the relay's function.

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

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

[0082] Continue to combine Figure 2 As shown, the lead assembly 200 has at least one terminal group consisting of four leads. The four leads in the terminal group are adapted to form three terminal sets.

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

[0084] In some implementations, two terminal groups have the same on / off state, which is opposite to the on / off state of another terminal group. This allows for multiple possibilities in the on / off control logic for the three terminal groups, enriching the application scenarios of the relay and enabling on / off control in different circuits. For example, the first terminal group 200a and the second terminal group 200b have the same on / off state, which is opposite to the on / off state of the third terminal group 200c. That is, if the first terminal group 200a and the second terminal group 200b are both in the on state, then the third terminal group 200c is in the off state; conversely, if the first terminal group 200a and the second terminal group 200b are both in the off state, then the third terminal group 200c is in the on state.

[0085] Combination Figure 2As shown, 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 states of the third terminal group 200c. Therefore, when the first terminal group 200a and the second terminal group 200b are simultaneously in a conducting state (i.e., the electrical path between the first lead 201 and the fourth lead 204 is conducting, and the electrical path between the second lead 202 and the third lead 203 is conducting), the electrical path between the third lead 203 and the fourth lead 204 is disconnected, meaning the third terminal group 200c is in a disconnected state. Correspondingly, when the first terminal group 200a and the second terminal group 200b are simultaneously in a disconnected state (i.e., the electrical path between the first lead 201 and the fourth lead 204 is disconnected, and the electrical path between the second lead 202 and the third lead 203 is disconnected), the electrical path between the third lead 203 and the fourth lead 204 is conducting, meaning the third terminal group 200c is in a conducting state.

[0086] It should be noted that the switching on and off of the first terminal group 200a, the second terminal group 200b, and the third terminal group 200c can be achieved through the contact unit 400 in the relay that is matched with the lead-out component 200.

[0087] For example, in some embodiments, the relay further includes a contact unit 400 corresponding to the lead-out assembly 200, the contact unit 400 being adapted to control the electrical connection or disconnection of two leads in each terminal group. In this embodiment, the switching control effect of the relay in the corresponding circuit is achieved by using the contact unit 400 to control the electrical path between the two leads in each terminal group to be connected or disconnected. Understandably, when the contact unit 400 controls the two leads in the terminal group to be electrically connected, it means that current can flow from one of the two leads to the other; at this time, the two leads can be understood as a current input terminal and a current output terminal for the relay. Correspondingly, when the contact unit 400 controls the two leads in the terminal group to be electrically disconnected, the electrical path between the two leads is broken and no current flows between them.

[0088] The contact unit 400 includes at least two movable contact components 400a, each movable contact component 400a being interconnected and capable of switching between an on and off state. In this embodiment, because the movable contact components 400a are interconnected, their actions are coordinated and consistent. Each movable contact component 400a can switch from an on state to an off state or from an off state to an on state together. Moreover, compared to configuring a separate drive section for power input for each movable contact component 400a, this technical solution of interconnecting the movable contact components 400a simplifies the structure of the drive section.

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

[0090] For ease of understanding, the structure of the relay will be further explained below in conjunction with the functional configuration of the lead-out component 200 in the relay in some embodiments, but it is not limited to the working state of the relay and the configuration of the corresponding contact unit 400.

[0091] For example, in an embodiment where at least two terminal groups in the lead-out assembly 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 assembly 200 switches from an on state to an off state, the other terminal group in the lead-out assembly 200 switches from an off state to an on state. Thus, the lead-out assembly 200 has two terminal groups with opposite on / off states, and the on / off control requirements of different circuits can be met by utilizing these terminal groups with opposite on / off states.

[0092] Taking the terminal group consisting of the first lead 201 and the fourth lead 204 as "first terminal group 200a", the terminal group consisting of the second lead 202 and the third lead 203 as "second terminal group 200b", and the terminal group consisting of the fourth lead 204 and the third lead 203 as "third terminal group 200c" as an example.

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

[0094] The lead-out assembly 200 has at least two terminal groups. Because the lead-out assembly 200 has at least two terminal groups, it can provide more control combinations and adapt to external circuits with more complex control logic, thus having greater applicability.

[0095] In some implementations, the leads included in any two terminal groups are independent of each other. That is, the leads included in any terminal group are not shared with the leads in other terminal groups, but are independent leads. In this way, each terminal group can be independently assembled into the housing 100, thereby avoiding the problem of assembly inconvenience caused by the existence of shared leads between terminal groups.

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

[0097] For ease of understanding, let's take the lead assembly 200 having two terminal groups, with four leads in each terminal group forming a first terminal group 200a, a second terminal group 200b, and a third terminal group 200c as an example.

[0098] like Figure 3 and Figure 4 As shown, each terminal group includes a first lead 201, a second lead 202, a third lead 203, and a fourth lead 204. In the same terminal group, the first lead 201 and the fourth lead 204 constitute a first terminal group 200a, the second lead 202 and the third lead 203 constitute a second terminal group 200b, and the third lead 203 and the fourth lead 204 constitute a third terminal group 200c. Since the other two leads in each terminal group besides the first and second terminals are suitable for constituting the third terminal group 200c, and the two leads of the third terminal group 200c are the third lead 203 and the fourth lead 204, in this embodiment, among the four leads of each terminal group, the first lead 201 and the second lead 202 are two shared leads, that is, the first lead 201 and the second lead 202 serve as the first terminal and the second terminal, respectively.

[0099] Continue to combine Figure 3 and Figure 4As shown, the lead-out assembly 200 can be connected to the vehicle's power distribution system and achieves series-parallel switching of at least two battery packs VC through the switching function of a relay. In each terminal group, the first terminal and the second terminal are used to connect to the total input terminal A and the total output terminal B of the entire battery pack VC, respectively, and the other two leads are used to connect to the positive and negative terminals of two adjacent battery packs, respectively. Since 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 states of the third terminal group 200c, 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 a conducting state, each of the third terminal groups 200c (i.e., the third lead-out terminal 203 and the fourth lead-out terminal 204) is in a 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 the third terminal group 200c (i.e., the third lead 203 and the fourth lead 204) in each terminal group is in the conducting state, the electrical path of each first terminal group 200a (i.e., the first lead 201 and the fourth lead 204) and each second terminal group 200b (i.e., the second lead 202 and the third lead 203) is 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] See again Figures 5 to 7 As shown, in some embodiments, the relay includes at least two lead-out components 200. Figure 6 Two lead-out components 200 are shown, namely a first lead-out component 2001 and a second lead-out component 2002. Each lead-out component 200 is arranged along a first direction parallel to the first sidewall 100a. Each lead-out terminal of each lead-out component 200 corresponds one-to-one with each lead-out terminal of the other lead-out component 200. Furthermore, the corresponding leads of different lead-out components 200 are suitable for external connection as common terminals of parallel switches in the relay. By providing at least two lead-out components 200, parallel switches (equivalent to moving contact components 400a) can be set inside the relay corresponding to each lead-out component 200, thereby reducing the overall contact resistance of the relay, making the relay more suitable for high-voltage or high-current applications, reducing the probability of relay conduction failure, and improving the reliability of the relay.

[0101] Taking an example where both the first lead-out component 2001 and the second lead-out component 2002 include the aforementioned first lead-out 201, second lead-out 202, third lead-out 203, and fourth lead-out 204. For ease of description, combined with... Figure 7 and Figure 8As shown, the first lead 201, the second lead 202, the third lead 203 and the fourth lead 204 in the first lead assembly 2001 are respectively designated as "Terminal 1 D1", "Terminal 2 D2", "Terminal 3 D3" and "Terminal 4 D4", and the first lead 201, the second lead 202, the third lead 203 and the fourth lead 204 in the second lead assembly 2002 are respectively designated as "Terminal 5 D5", "Terminal 6 D6", "Terminal 7 D7" and "Terminal 8 D8".

[0102] In this embodiment, the first lead-out assembly 2001 and the second lead-out assembly 2002 are arranged along a first direction parallel to the first sidewall 100a, and each lead-out terminal of the first lead-out assembly 2001 corresponds one-to-one with each lead-out terminal of the second lead-out assembly 2002. It should be noted that the corresponding leads of the first lead-out assembly 2001 and the second lead-out assembly 2002 are suitable for external connection as a common terminal of parallel switches in a relay; that is, the correspondence here refers to a functional correspondence in connecting to a common terminal, not a correspondence in arrangement position. For example, combined with... Figure 5 and Figure 6 As shown, the first lead 201 (i.e., terminal one D1) in the first lead assembly 2001 corresponds to the first lead 201 (i.e., terminal five D5) in the second lead assembly 2002; the second lead 202 (i.e., terminal two D2) in the first lead assembly 2001 corresponds to the second lead 202 (i.e., terminal six D6) in the second lead assembly 2002; the third lead 203 (i.e., terminal three D3) in the first lead assembly 2001 corresponds to the third lead 203 (i.e., terminal seven D7) in the second lead assembly 2002; and the fourth lead 204 (i.e., terminal four D4) in the first lead assembly 2001 corresponds to the fourth lead 204 (i.e., terminal eight D8) in the second lead assembly 2002. Because each corresponding lead in the first lead assembly 2001 and the second lead assembly 2002 is adapted to be connected externally as a common terminal of the parallel switches in the relay, terminals D1 and D5 are adapted to be connected externally as a common terminal of the parallel switches in the relay; terminals D2 and D6 are adapted to be connected externally as a common terminal of the parallel switches in the relay; terminals D3 and D7 are adapted to be connected externally as a common terminal of the parallel switches in the relay; and terminals D4 and D8 are adapted to be connected externally as a common terminal of the parallel switches in the relay. This arrangement allows each lead to meet the electrical connection requirements of the relay in the external circuit.

[0103] See again Figure 2As shown, the contact unit 400 includes stationary contact components 400b that correspond one-to-one with the moving contact component 400a. Each stationary contact component 400b includes two stationary contacts for input current and output current, respectively, and each stationary contact is connected to a lead-out terminal. The moving contact component 400a is used to disconnect or connect the electrical path between the two corresponding stationary contacts. Thus, when the moving contact component 400a disconnects the electrical path between the two corresponding stationary contacts, the electrical path between the two leads connected to the two stationary contacts is disconnected; correspondingly, when the moving contact component 400a connects the electrical path between the two corresponding stationary contacts, the electrical path between the two leads connected to the two stationary contacts is connected. 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 and ensuring the reliability of the electrical connection.

[0104] Taking the contact unit 400, which includes two stationary contact components 400b and two moving contact components 400a that correspond to each other, as an example. Combined with... Figure 2 As shown, the two stationary contact components 400b in the contact unit 400 are a first stationary contact component 403 and a second stationary contact component 404, respectively. Both the first stationary contact component 403 and the second stationary contact component 404 are fixed relative to the housing 100.

[0105] The first stationary contact assembly 403 includes a first stationary contact 4031 and a second stationary contact 4032, which are used for input current and output current, respectively.

[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 assembly 404 includes a third stationary contact 4041 and a fourth stationary contact 4042, which are used for input current and output current, respectively. 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 a first moving contact component 401 and a second moving contact component 402, respectively. The first moving contact component 401 is used to disconnect or connect 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 connect 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 connect the electrical path between the two stationary contacts of the corresponding stationary contact component 400b, to meet the needs of the relay performing switching operations in an external circuit.

[0109] Since in the contact unit 400, at least two stationary contact components 400b and at least two moving contact components 400a correspond one-to-one with each other.

[0110] In the contact unit 400, the arrangement direction of each stationary contact component 400b can be along a second direction intersecting the first sidewall 100a, and each moving contact component is arranged along the second direction. Therefore, the arrangement direction of each stationary contact component 400b is consistent with the arrangement direction of each moving contact component 400a, which facilitates the adjacent arrangement of each stationary contact component 400b and the corresponding moving contact component 400a, thereby improving the compactness of the layout, realizing the miniaturization of the relay, and reducing the amount of conductive material consumed by each stationary contact component 400b for electrical lead-out to the outside of the housing 100, thereby reducing costs.

[0111] It should be noted that since the arrangement direction of each stationary contact component 400b and each moving contact component 400a is along the second direction, the installation direction of each stationary contact component 400b and each moving contact component 400a is usually parallel to the first sidewall 100a to ensure that each stationary contact component 400b and each moving contact component 400a can be supported. On this basis, the first sidewall 100a can be used to form one side of the opening of the housing 100 (for the installation of each stationary contact component 400b and each moving contact component 400a). Each stationary contact component 400b is connected to the first sidewall 100a from the opening. The shape and size of each stationary contact component 400b and each lead-out end can be flexibly set as needed, and will not be restricted by the perforation on the first sidewall 100a because it needs to extend vertically out of the first sidewall 100a. Therefore, the area of ​​each stationary contact component 400b and each lead-out end can be increased as needed to adaptively increase the area of ​​the connection surface of the lead-out end, thereby achieving reliable connection and reducing heat generation.

[0112] For example, such as Figure 2 As shown, in some embodiments, in the contact unit 400, the first stationary contact component 403 and the second stationary contact component 404 are arranged along a second direction, and the first moving contact component 401 and the second moving contact component 402 are also arranged along the second direction. Thus, the arrangement direction of the first stationary contact component 403 and the second stationary contact component 404 is consistent with the arrangement direction of the first moving contact component 401 and the second moving contact component 402. The first stationary contact component 403 and the second stationary 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 compactness of their layout, achieving miniaturization of the relay, and reducing the amount of conductive material consumed by the first stationary contact component 403 and the second stationary contact component 404 for electrical lead-out to the outside of the housing 100, thereby reducing costs.

[0113] In some embodiments, in the contact unit 400, when the on / off states of each stationary contact component 400b are the same, and when each moving contact component 400a disconnects the electrical path between its corresponding two stationary contacts, two adjacent moving contact components 400a connect the electrical path between one stationary contact in each of the two adjacent stationary contact components 400b. Thus, the on / off control of each moving contact component 400a can be used to achieve series-parallel switching, enabling the relay to have a series-parallel switching function to adapt to certain special application scenarios, such as in automotive battery management systems to optimize the charging and discharging function of the battery pack.

[0114] Combination Figure 2 As shown, the first terminal group 200a is formed by the first lead-out terminal 201 and the fourth lead-out terminal 204, and the second terminal group 200b is formed by the second lead-out terminal 202 and the third lead-out terminal 203.

[0115] The two stationary contacts of the first stationary contact assembly 403 are connected to the two leads of the first terminal group 200a, and the two stationary contacts of the second stationary contact assembly 404 are connected to the two leads of the second terminal group 200b.

[0116] When both the first moving contact assembly 401 and the second moving contact assembly 402 disconnect the electrical path of the corresponding two stationary contacts, the electrical path between the first stationary contact 4031 and the second stationary contact 4032 is disconnected, and the electrical path between the third stationary contact 4041 and the fourth stationary contact 4042 is disconnected. The first moving contact assembly 401 and the second moving contact assembly 402 then conduct the electrical path between the second stationary contact 4032 and the third stationary contact 4041.

[0117] Since the second stationary contact 4032 is connected to the fourth lead 204 and the third stationary contact 4041 is connected to the third lead 203, when the electrical path between the second stationary contact 4032 and the third stationary contact 4041 is conductive, it means that the electrical path between the fourth lead 204 and the third lead 203 is conductive. Furthermore, since the fourth lead 204 in the first terminal group 200a and the third lead 203 in the second terminal group 200b constitute the third terminal group 200c, the third terminal group 200c is in a conductive state at this time.

[0118] Based on this, when the first terminal group 200a and the second terminal group 200b are both in the ON state, the third terminal group 200c is in the OFF state; conversely, when the first terminal group 200a and the second terminal group 200b are both in the OFF state, the third terminal group 200c is in the ON state. Thus, the ON and OFF states of the first terminal group 200a and the second terminal group 200b are the same, and opposite to the ON and OFF states of the third terminal group 200c. This design enables series-parallel switching of relays to adapt to certain special application scenarios, such as in automotive battery management systems to optimize the charging and discharging functions of the battery pack.

[0119] In some embodiments, each moving contact assembly 400a includes a moving contact 410, one end of which is fixed to one of the corresponding stationary contacts, and the other end is used to electrically connect or disconnect with another corresponding stationary contact. This moving contact 410 uses a swinging motion to achieve on / off control, resulting in a simple structure and small footprint, which is beneficial for the miniaturization of relays.

[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 which is connected to the first stationary contact 4031, and the other end is used to electrically connect or disconnect with the second stationary contact 4032, thereby enabling the first moving contact assembly 401 to 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 contact 410 in each moving contact assembly 400a is disconnected from the stationary contact in the corresponding stationary contact assembly 400b, at least one moving contact 410 in the moving contact assembly 400a is electrically connected to one stationary contact in the adjacent stationary contact assembly 400b, so as to connect the electrical path between one stationary contact in each of the two adjacent stationary contact assemblies 400b, thereby realizing the relay series-parallel switching function.

[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 fixedly connected to two stationary contacts, and the movable ends 412 of the two moving contacts 410 are respectively used to electrically connect or disconnect with another stationary contact. In this way, the two moving contacts 410 in the same moving contact assembly 400a can achieve a parallel structure with a simple structure to reduce contact resistance, and can also utilize the electromagnetic force generated between them when current flows through them to increase their contact pressure and improve their ability to withstand high fault currents, making the relay product suitable for high voltage or high current application environments.

[0123] Combination Figures 6 to 8As shown, taking a contact system including a first moving contact component 401 and a 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 contacts 410.

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

[0125] Combination Figure 9 and Figure 10 As shown, the two first movable contacts 4011 and the two second movable contacts 4021 are arranged along the second direction, and each of the first movable contacts 4011 and the second movable contacts 4021 has a fixed end 411 and a movable end 412. (Combined) Figure 2 As shown, in the first moving contact assembly 401, the fixed end 411 of one of the first moving contact 4011 is fixed to the first stationary contact 4031, and the fixed end 411 of the other first moving contact 4011 is fixed to the second stationary contact 4032.

[0126] When the two movable ends 412 of the two first movable contacts 4011 are in electrical contact with the fixed end 411 of the other first movable contact 4011, the two first movable contacts 4011 form parallel branches to conduct the electrical path between the first stationary contact 4031 and the second stationary contact 4032.

[0127] Accordingly, when both movable ends 412 of the two first movable contacts 4011 are moved away from the fixed end 411 of the other first movable contact 4011 along the second direction, both first movable contacts 4011 disconnect the electrical path between the first stationary contact 4031 and the second stationary contact 4032.

[0128] The two second moving contacts 4021 of the second moving contact assembly 402 can also be arranged in the same way as the two first moving contacts 4011 of the first moving contact assembly 401.

[0129] Combination Figure 2 As shown, in the second moving contact assembly 402, the fixed end 411 of one of the second moving contact 4021 is fixed to the third stationary contact 4041, and the fixed end 411 of the other second moving contact 4021 is fixed to the fourth stationary contact 4042.

[0130] When the two movable ends 412 of the two second movable contacts 4021 are in electrical contact with the fixed end 411 of the other second movable contact 4021, the two second movable contacts 4021 form parallel branches to conduct the electrical path between the third stationary contact 4041 and the fourth stationary contact 4042.

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

[0132] In the above embodiments, both the first moving contact assembly 401 and the second moving contact assembly 402 utilize two moving contacts 410 to form a parallel branch, thereby conducting the electrical path of the corresponding two stationary contacts and reducing contact resistance. Furthermore, each moving contact 410 employs a swing-type moving spring with a fixed end 411 and a movable end 412, achieving a simple parallel structure while utilizing the electromagnetic force generated between them when current flows through, thus increasing their contact pressure and enhancing their ability to withstand large fault currents.

[0133] Combination Figure 8 and Figure 10 As shown, in some embodiments, in at least one moving contact assembly 400a, both moving contacts 410 include multiple current-guiding branches 413, and the current-guiding branches 413 on the two moving contacts 410 correspond one-to-one. The multiple current-guiding branches 413 of the moving contacts 410 are arranged along a first direction and are configured such that when the two stationary contacts of the corresponding stationary contact assembly 400b are electrically connected, each current-guiding branch 413 is connected in parallel, thereby helping to reduce contact resistance.

[0134] It should be noted that the flow guide branch 413 can extend from the fixed end 411 of the moving contact 410 to the movable end 412, or it can be part of the structure between the fixed end 411 and the movable end 412 of the moving contact 410.

[0135] Continue to combine Figure 10 As shown, the movable contact 410 is an integral structural component, and the movable contact 410 has a slit 414, which divides the movable contact 410 into multiple flow-guiding branches 413. This structure, which divides the movable contact 410 into multiple flow-guiding branches 413 through the slit 414, is simple and easy to implement.

[0136] The number of flow branches 413 can be two or more; there is no limit to the number of flow branches 413.

[0137] It should be noted that the slit 414 can extend from the fixed end 411 to the movable end 412, that is, the slit 414 divides the movable end 412 of the moving contact 410 into multiple sub-sections, each sub-section being equivalent to a flow guide branch 413. In this case, the flow guide branch 413 extends from the fixed end 411 of the moving contact 410 to the movable end 412, and each of the multiple flow guide branches 413 divided by the slit 414 has a corresponding movable end 412. Therefore, the movable ends 412 of each flow guide branch 413 are separated from each other. Compared to the movable end 412 of the moving contact 410 being integrated, this separation of the movable ends 412 of each flow guide branch 413 helps to reduce the driving force when the movable end 412 is oscillating, making the switching action of the moving contact assembly 400a between the first and second switching states more flexible and reliable.

[0138] Furthermore, each flow guide branch 413 possesses a degree of independence, resulting in minimal restraining force between them when they oscillate, thus preventing them from simultaneously separating from their corresponding stationary contacts 410a due to vibration. Consequently, this type of moving contact 410 further reduces the probability of all moving contacts 410b disconnecting from their corresponding stationary contacts 410a due to vibration, thereby improving the relay's shock resistance.

[0139] The slit 414 can also divide a portion of the structure of the moving contact 410 located between the fixed end 411 and the movable end 412, meaning the slit 414 does not extend to the movable end 412. Thus, each current-guiding branch 413 in the moving contact 410 effectively forms multiple parallel branches arranged along the first direction between the fixed end 411 and the movable end 412, thereby electrically connecting the movable end 412 and the fixed end 411 of the moving contact 410 through the multiple parallel current-guiding branches 413. In this way, when the moving contact assembly 400a is in the second switching state, the two moving contact assemblies 400a are connected in parallel, the two moving contacts 410 in the moving contact assembly 400a are connected in parallel, and the multiple current-guiding branches 413 in the moving contact 410 are connected in parallel. These parallel current-guiding branches 413 further extend the parallel structure in the contact unit 400 to reduce contact resistance.

[0140] Combination Figure 11 and Figure 12As shown, in some embodiments, the second direction is perpendicular to the first sidewall 100a; the direction of movement of the movable contact 410 in the movable contact assembly 400a is parallel to the second direction perpendicular to the first sidewall 100a. In this embodiment, the direction of movement of the movable contact 410 is parallel to the second direction, that is, when the movable contact assembly 400a switches on and off, at the instant the movable contact 410 in its natural state deforms, the direction of movement of the movable end 412 is parallel to the second direction. Furthermore, the direction of movement of the movable contact 410 can be understood as a direction parallel to the tangent direction corresponding to the movable end 412 in its undeformed natural state.

[0141] Since the direction of motion of the movable contact 410 is parallel to the second direction perpendicular to the first sidewall 100a, the movable contact 410 can obtain sufficient space to meet the contact action requirements in the second direction, without having to provide space for the movable contact 410 to perform contact actions in the direction perpendicular to the second direction. This is beneficial for arranging the movable contact 410 in the space perpendicular to the second direction (such as the first direction or the third direction), making the movable contact 410 arranged compactly to facilitate miniaturization design, while also ensuring the space required for contact actions.

[0142] Each contact unit 400 contains two stationary contact components 400b and two moving contact components 400a to accommodate the needs of relay use. For example, by switching the on / off states of the two moving contact components 400b, the electrical path between the leads connected to the stationary contact component 400a can be broken or made open. This allows the terminal group to be configured such that two of the terminal groups have the same on / off state, while the other terminal group has the opposite on / off state. This provides multiple possibilities for the on / off control logic of the three terminal groups, enriching the application scenarios of the relay and enabling on / off control in different circuits.

[0143] Combined again Figure 6 and Figure 7As shown, in some embodiments, there are two lead-out components 200 and two contact units 400. Each lead-out component 200 is arranged along a first direction perpendicular to the second direction and parallel to the first sidewall 100a. The leads of the two lead-out components 200 correspond one-to-one with each other, and the corresponding leads of the two lead-out components 200 are suitable for external connection as the common terminal of parallel switches in a relay. By arranging the lead-out components 200 along the first direction, the need for input or output current of the corresponding moving contact component 400a in each contact unit 400 through the stationary contact component 400b is accommodated. Correspondingly, since each lead of the two lead-out components 200 corresponds to one another, and each lead of the two lead-out components 200 is suitable for external connection as the common terminal of the parallel switches in the relay, the internal components of the relay can be equipped with parallel moving contact components 400a corresponding to each lead-out component 200, thereby reducing the overall contact resistance of the relay, making the relay more suitable for high voltage or high current applications, reducing the probability of relay conduction failure, and improving the reliability of the relay.

[0144] It should be noted that in embodiments where there are two lead-out components 200 and two contact units 400, the configuration structure of each lead-out component 200 and each contact unit 400 can refer to the above-mentioned embodiments.

[0145] For example, in each contact unit 400, the two leads corresponding to one stationary contact component 400b are a first lead 201 and a second lead 202, and the two leads corresponding to the other stationary contact component 400b are a third lead 203 and a fourth lead 204; the first lead 201 and the second lead 202 are arranged along a third direction; the third lead 203 and the fourth lead 204 are arranged along a third direction; the first lead 201 and the third lead 203 are arranged along a first direction; and the second lead 202 and the fourth lead 204 are arranged along a first direction.

[0146] In the two lead-out components 200, two third leads 203 are arranged along the first direction and located between two first leads 201 along the first direction, and two fourth leads 204 are arranged along the first direction and located between two second leads 202 along the first direction.

[0147] In this embodiment, by arranging the positions of each lead-out terminal in a reasonable manner, the lead-out terminals can be easily connected to the corresponding stationary contacts. While meeting the electrical connection requirements of the relay, the lead-out terminals are placed in positions adjacent to the stationary contacts they are connected to, so as to reduce the amount of conductive material used in the lead-out terminals.

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

[0149] Combination Figure 11 and Figure 12 As shown, in some embodiments, the housing 100 includes a mounting base 110, which has a first mounting cavity 111 and a second mounting cavity 112 arranged along a first direction. The moving contact components 400a of the two contact units 400 can be respectively installed into the first mounting cavity 111 and the second mounting cavity 112 from both ends of the mounting base 110 in the first direction. This assembly method is simple, and the mounting base 110 only needs to provide installation space for the relevant structure at the corresponding position and meet the requirements of relay use. No space needs to be reserved at other positions to ensure the overall structural strength of the mounting base 110, so that the mounting base 110 is not easy to deform, thereby improving the reliability of relay use.

[0150] It should be noted that each stationary contact extends out of the housing 100 in the third direction and bends in the second direction to connect with the lead-out end.

[0151] For ease of understanding, combined with Figure 13 and Figure 14 As shown, the side wall of the mounting base 110 has a groove for each stationary contact to extend out.

[0152] It should be noted that the number of grooves corresponds to the number of stationary contacts. For example, combining... Figure 6 and Figure 7 As shown, taking the example where both the first lead-out assembly 2001 and the second lead-out assembly 2002 in the aforementioned embodiment include the first lead-out 201, the second lead-out 202, the third lead-out 203, and the fourth lead-out 204, the eight leads are respectively connected to eight stationary contacts. Combined with... Figure 8 , Figure 13 and Figure 14As shown, in some embodiments, the side wall of the mounting base 110 has eight grooves, and eight stationary contacts extend from the corresponding grooves. For ease of understanding, the stationary contacts that are connected one-to-one with the eight leads (i.e., terminals D1 to D8) are respectively called "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 used to install the corresponding stationary contacts are respectively called "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 both the inner and outer walls of the mounting base 110, forming an inner groove and an outer groove on each wall. The depth of the inner groove of the groove communicating with the first mounting cavity 111 is less than or equal to one-third of the depth of the first mounting cavity 111, and the depth of the inner groove of the groove communicating with the second mounting cavity 112 is less than or equal to one-third of the depth of the second mounting cavity 112. Controlling the groove depth helps maintain the structural strength of the mounting base 110, preventing excessively deep grooves that could isolate at least one side of the mounting base 110 from becoming an unsupported structure, thus avoiding affecting the overall structural strength of the mounting base 110 and improving the reliability of the relay. Therefore, this embodiment improves the structural strength of the sidewalls of the mounting base 110 and achieves physical isolation and independent stress bearing for different contact units 400. This makes the mounting base 110 less prone to deformation, thereby enhancing the reliability of the relay.

[0154] In some embodiments, the two lead-out components 200 are arranged in a mirror image with a plane perpendicular to the first direction as their plane of symmetry. This mirror-symmetric structure simplifies the processing and installation of the components, facilitates the assembly of the relay's various structures, and improves space utilization, thus enabling the miniaturization of the relay.

[0155] Combined again 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, and divides the inner cavity of the base body 1101 into a first mounting cavity 111 and a second mounting cavity 112 along a 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, which 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 from the first mounting port and the second mounting port respectively (for example, two contact units 400 are respectively installed into the first mounting cavity 111 and the second mounting cavity 112), so as to improve the ease of installation 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 structural reinforcement role for the base body 1101, making the base body 1101 less prone to deformation. As a result, even if the stationary contact 410a of the first moving contact assembly 401 and the second moving contact assembly 402 is impacted by the moving contact 410b during the contact action, the base body 1101 can reduce the probability of deformation or damage under the reinforcement of the first mounting plate 1102, making the relay less prone to damage and extending the service life of the relay.

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

[0157] Combination Figure 13 As shown, the inner cavity of the base body 1101 also 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 mounted to the third mounting cavity 113 along at least one end of the base body 1101 in the first direction, thereby improving the ease of installation when the electromagnetic system 500 and the contact unit 400 are mounted to the base body 1101.

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

[0159] Combination Figure 13 and Figure 14 As shown, in the second direction, the first mounting cavity 111 and the second mounting cavity 112 are both 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 to the third mounting cavity 113 along the first direction. Understandably, both the coil assembly 510 and the armature assembly 520 can be mounted to the third mounting cavity 113 from the third mounting port along the first direction.

[0160] Combination Figure 6 , Figure 7 , Figure 13 and Figure 14 As shown, the base body 1101 includes a side wall portion 1101a and a bottom wall portion 1101b. Understandably, the first side wall 100a may be one side wall 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 portion of the structure of the side wall portion 1101a together form a third mounting cavity 113. Another portion of the structure of the side wall portion 1101a, the first mounting plate 1102, and the second mounting plate 1103 together form a first mounting cavity 111 and a 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 installation stability of the electromagnetic system 500.

[0161] It should be noted that in the embodiment where the electromagnetic system 500 includes a coil assembly 510 and an 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 installation stability of both the coil assembly 510 and the armature assembly 520.

[0162] In some embodiments, the armature assembly 520 is connected to a rotating shaft 520a, one end of which is connected to the bottom wall portion 1101b. The armature assembly 520 can rotate relative to the bottom wall portion 1101b about the center line of the rotating shaft 520a. In this embodiment, the rotation of the armature assembly 520 about the center line of the rotating shaft 520a relative to the bottom wall portion 1101b provides power for the contact or disconnection action of the moving contact component 400a in the contact unit 400, to meet the needs of relay use. The axial direction of the rotating shaft 520a is parallel to the first direction, so the armature assembly 520 can be rotatably connected to the bottom wall portion 1101b by mounting it into the third mounting 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 to the first mounting cavity 111 of the mounting base 110 along the first direction, and the other contact unit 400 is assembled to the second mounting cavity 112 of the mounting base 110 along the first direction. Therefore, in the relay of this application, the electromagnetic system 500 and the two contact units 400 can be assembled to the mounting base 110 in the same dimension (i.e., the first direction), making the assembly operation convenient. Moreover, this structural layout helps to reduce the waste of assembly space, so as to achieve miniaturization of the relay. Furthermore, since the electromagnetic system 500 and the contact units 400 are arranged along the second direction, the space in both the first and second directions is rationally utilized, avoiding the relay being too large in one direction (the first direction or the second direction), which would be detrimental to miniaturization design.

[0164] It should be noted that the second mounting plate 1103 can also serve a supporting function, including but not limited to the second mounting plate 1103 directly providing support. In some embodiments, the second mounting plate 1103 can indirectly serve a mounting support function. For example, as... Figure 6 and Figure 7 As 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 bracket 520b. When the mounting bracket 520b is installed on the base body 1101, the second mounting plate 1103 cooperates with the mounting bracket 520b. The second mounting plate 1103 can fix the mounting bracket 520b, thereby reducing the probability of the mounting bracket 520b becoming loose relative to the base body 1101. Therefore, in this embodiment, the second mounting plate 1103 indirectly supports the rotating shaft 520a through the mounting bracket 520b, so that the armature assembly 520 can rotate stably around the rotating shaft 520a, thereby improving the rotational stability of the armature assembly 520.

[0165] In some embodiments, the extension direction of the second mounting plate 1103 is parallel to the first direction. In this way, the second mounting plate 1103 is less likely to interfere with the assembly of the contact unit 400, avoiding wasted space and facilitating the miniaturization of the relay.

[0166] Combination Figure 6 , Figure 11 and Figure 12 As shown, the relay also includes a drive mechanism 600, which is disposed between the armature assembly 520 and the contact unit 400. The drive mechanism 600 is used to drive the contact unit 400 to move under the drive of the armature assembly 520, so that the contact unit 400 controls the electrical connection or disconnection of two leads in each terminal group.

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

[0168] In some embodiments, two first push cards 611 are respectively connected to the movable end 412 of the movable contact 410 in one of the contact units 400, and two second push cards 621 are respectively connected to the movable end 412 of the movable contact 410 in another contact unit 400. With this structural arrangement, the push mechanism 600 is separately arranged in the mounting base 110 in the first direction using the first set of push cards 610 and the second set of push cards 620. This avoids the push cards from being too large in the first direction and easily deformed or broken when multiple contact units 400 arranged along the first direction need to be driven simultaneously, thereby improving the reliability of the push mechanism 600 in driving 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 is rotatable about a pivot 520a parallel to a first direction, causing the driving ends of the first connecting arm 521 and the second connecting arm 522 to move in opposite directions. Two first push clips 611 are correspondingly connected to the first connecting arm 521 and the second connecting arm 522. Two second push clips 621 are correspondingly connected to the first connecting arm 521 and the second connecting arm 522. The ends of the two first push clips 611 away from the first moving contact assembly 401 are respectively connected to the driving ends of the first connecting arm 521 and the second connecting arm 522, and the ends of the two second push clips 621 away from the second moving contact assembly 402 are respectively connected to the driving ends of the first connecting arm 521 and the second connecting arm 522.

[0170] In the push mechanism 600, the number of moving contacts pushed by the first push card 611 and the second push card 621 is not limited, as long as the push mechanism 600 can drive the moving contacts in each contact unit 400 under the drive of the armature assembly 520, so as to realize the switching of 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. This allows the armature assembly 520 to be closer to the contact unit 400, thereby reducing the length of the lever arm through which the armature assembly 520 drives the contact unit 400, resulting in a compact structure and miniaturization of the relay.

[0172] Continue to combine Figure 6 , Figure 11 and Figure 12 As shown, taking the armature assembly 520 including a first connecting arm 521 and a 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 facing away from the coil assembly 510 along the second direction. The driving end of the first connecting arm 521 and the driving end of 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 facing away from the coil assembly 510 along the second direction, the driving ends of the first connecting arm 521 and the second connecting arm 522 are short in the second direction from the contact unit 400. The first set of push cards 610 and the second set of push cards 620 serve as a transmission structure that drives the movable end 412 of the corresponding moving contact 410 to move under the drive of the armature assembly 520. The shorter the distance 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 length of the two first push cards 611 in the first set of push cards 610 and the two second push cards 621 in the second set of push cards 620 in the second direction. Consequently, deformation is less likely to occur when the moving contact 410 is pushed to move, which helps to maintain the contact reliability between the moving contacts 410 and thus improves the reliability of the relay.

[0174] It should be noted that the number of push cards in the pushing mechanism 600 is not limited to the first group of push cards 610 and the second group of push cards 620. In some embodiments, the pushing mechanism 600 includes multiple groups of push cards, where multiple groups of push cards refer to two or more groups of push cards. Each group of push cards is arranged along a first direction and is respectively connected to the moving contact component 400a in each contact unit 400 arranged along the first direction. The structure of each group of push cards and the connection structure with each moving contact component 400a are not limited here.

[0175] In an embodiment of the electromagnetic system 500 including 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, and drives the moving contacts 410 in each contact unit 400 to move synchronously via each set of push cards.

[0176] Combination Figure 6 As shown, in some embodiments, the coil assembly 510 includes at least two coil windings 511 arranged along the first direction. While arranging multiple moving contact components 400a in the space of the first direction, the height of the moving contact unit in the first direction will increase accordingly. Therefore, in this embodiment, by configuring the coil assembly 510 to include at least two coil windings 511 arranged along the first direction, more coil windings 511 can be arranged in the space of the first direction, improving the space utilization rate of the coil assembly 510 located in the first direction. With the total number of coil turns remaining unchanged, this design helps to reduce the projected area of ​​the coil assembly 510 on a plane perpendicular to the first direction, thereby achieving miniaturization of the relay.

[0177] Furthermore, the dimension of the coil winding 511 in the second direction is less than or equal to the dimension of the coil winding 511 in the first direction. In this way, the coil winding 511 can reduce the space occupied in the second direction while increasing the space utilization 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 conducive to the miniaturization of the relay.

[0178] Combined again Figure 6 and Figure 7 As shown, in some embodiments, the isolation structure 300 includes four spacers, each spacer fixed relative to the housing 100, and used to electrically isolate two leads of adjacent terminals in different terminal groups (e.g., the positive terminal of the first circuit and the positive terminal of the second circuit) suitable for external connection to circuits along a first direction. In this embodiment, the two leads that need to be electrically isolated by the spacers can also be understood as two leads that are not used as shared leads (e.g., the first terminal and the second terminal) and are arranged adjacently. These two leads are used to connect two terminals of the external circuit, rather than the same terminal of the circuit (because the two terminals of the same terminal of the circuit need to be in electrical contact, but do not need to be insulated).

[0179] In this embodiment, a spacer is used to increase the creepage distance between two adjacent leads to improve electrical isolation performance.

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

[0181] The structure of the four spacers is not limited here, as long as the spacers can increase the creepage distance at the corresponding positions.

[0182] For ease of understanding, the four partitions will be referred to as “first partition 10”, “second partition 20”, “third partition 30” and “fourth partition 40” respectively.

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

[0184] The first barrier 10 electrically isolates stationary contacts P1 and P3, increasing the creepage distance between them. The second barrier 20 electrically isolates stationary contacts P2 and P4, increasing the creepage distance between them. The third barrier 30 electrically isolates stationary contacts P5 and P7, increasing the creepage distance between them. The fourth barrier 40 electrically isolates stationary contacts P6 and P8, increasing the creepage distance between them.

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

[0186] The clamping part S is used to engage with the bent portion of the corresponding stationary contact, and the clamping part S is limited and engaged with the relay housing 100 and / or the corresponding bent portion along the first, second, and third directions. Thus, by using the clamping part S of the spacer to hold the corresponding stationary contact, when the clamping part S is assembled into the corresponding groove, the stationary contact is less likely to wobble in the groove under the action of the clamping part S, thereby improving the installation stability of the stationary contact relative to the mounting base 110. It should be noted that the stationary contact and the housing 100 can be an interference fit and fixed by adhesive application. Because the clamping part S engages with the stationary contact, when the stationary contact is installed into the corresponding groove and fixed to the housing 100, the clamping part S has reliable stability relative to the housing 100 after being limited and / or fixed by the stationary contact.

[0187] Each clamping part S is provided with a clamping groove SC to mate with the corresponding stationary contact. The clamping grooves SC of the clamping part S improve the assembly stability between the spacer and the corresponding stationary contact, thereby enhancing the reliability of the relay. It should be noted that the clamping part S only needs to be able to mate with the corresponding groove; there are no limitations on this. The clamping groove SC only needs to be able to clamp a portion of the structure of the corresponding stationary contact to improve the assembly stability between the spacer and the corresponding stationary contact. The shape of the clamping part S and the clamping groove SC is 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 base 110 along the first direction and form the relay housing 100 with the mounting base 110, and the two mounting covers 120 respectively cover the first mounting port and the second mounting port. The clamping part S is limited and cooperates with the relay housing 100 and / or the corresponding stationary contact assembly 400b along the first direction, the second direction and the third direction, thereby improving the installation stability of the corresponding spacer.

[0189] Furthermore, at least one mounting cover 120 is provided with a partition wall 301. Thus, not only can the partition wall 301 be provided on the mounting base 110, but the partition wall 301 can also be provided on the mounting cover 120, so that the electrical isolation effect between the corresponding adjacent leads can be improved by using the partition walls 301 on the mounting cover 120 and the mounting base 110 together.

[0190] The first partition 10 and the third partition 30 are mirror-symmetrical about a plane perpendicular to the first direction. The second partition 20 and the fourth partition 40 are also mirror-symmetrical about a plane perpendicular to the first direction. This mirror-symmetrical structure facilitates the assembly of the relay components and improves space utilization, thus enabling the miniaturization of the relay.

[0191] Combination Figure 15 and Figure 16 As shown, the first barrier 10 includes a first barrier wall 11 and a second barrier wall 12. The first barrier wall 11 protrudes from the outer wall surface of the first sidewall 100a. The first barrier wall 11 may be located between the outer wall surface of the first sidewall 100a and terminal D1, or the first barrier wall 11 may be located between the outer wall surface of the first sidewall 100a and terminal D3. The second barrier wall 12 is connected to the first barrier wall 11. The second barrier wall 12 is located between terminal D1 and terminal D3 along a first direction, thereby increasing the creepage distance of terminal D1 and terminal D3 in the first direction. Therefore, in this embodiment, under the shielding of the first barrier wall 11 and the second barrier wall 12, the creepage distance between the surfaces of terminal D1 and terminal D3 facing the outer wall surface of the first sidewall 100a is increased.

[0192] The first partition 10 also includes a third baffle 13, which is connected to the first baffle 11 and the second baffle 12 on the inner side in the third direction (i.e., on the side closer to the center of the mounting base 110 in the third direction). The first baffle 11, the second baffle 12, and the third baffle 13 are connected and together form a first receiving groove 10a with a first opening. Terminal D1 or terminal D3 is received in the first receiving groove 10a and exposed from the first partition 10 through the first opening. In this embodiment, the creepage distance of the inner side of terminal D1 and terminal D3 in the first direction is increased due to the third baffle 13, thus preventing current breakdown at the corners of terminal D1 and terminal D3. By providing the first opening, the lead-out terminal at the first receiving groove 10a can be reliably connected to the outside.

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

[0194] The second partition 20 also includes a sixth partition wall 23, which is connected to the fourth partition wall 21 and the fifth partition wall 22 on the inner side in the third direction (i.e., on the side closer to the center of the mounting base 110 in the third direction). The fourth partition wall 21, the fifth partition wall 22 and the sixth partition wall 23 are connected and together form a second receiving groove 20a with a second opening. Terminal 2 D2 or terminal 4 D4 is received in the second receiving groove 20a and exposed from the second partition 20 through the second opening. In this embodiment, the creepage distance of the inner side of terminal 2 D2 and terminal 4 D4 in the first direction can be increased, avoiding current breakdown of terminal 2 D2 and terminal 4 D4 at the corner positions. By providing the second opening, the lead-out end at the second receiving groove 20a can be reliably connected to the outside.

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

[0196] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay, characterized in that, include: The housing has a first sidewall; The lead-out assembly includes at least four leads, the at least four leads being adapted to form at least three terminal groups, each terminal group including two leads adapted to be electrically connected or disconnected from each other, each lead being exposed outside the first sidewall, and the orthographic projections of each lead on the outer wall surface of the first sidewall being spaced apart from each other. An isolation structure is fixed relative to the housing, the isolation structure at least partially protruding from the outer wall surface of the first sidewall, and is used for electrical isolation of at least partially adjacent leads.

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

3. The relay according to claim 1, characterized in that, Each of the aforementioned leads is plate-shaped and parallel to the outer wall surface of the first sidewall.

4. The relay according to claim 1, characterized in that, It also includes a contact unit, which includes at least two moving contact components; each of the moving contact components is linked to each other and each of the moving contact components can switch between a conducting state and a disconnecting 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 assembly has at least one terminal group consisting of four leads, the four leads in the terminal group being adapted to form three terminal groups, wherein two of the terminal groups have the same on / off state and the opposite on / off state to the other terminal group.

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

7. The relay according to claim 5, characterized in that, Within the same terminal group, the three terminal groups consisting of the four leads are respectively the first terminal group, the second terminal group, and the third terminal group; The lead-out assembly has at least two terminal groups; each terminal group shares two leads, the two shared leads being a first terminal and a second terminal, respectively; In each of the terminal groups, the first terminal is adapted to form a first terminal group with one of the other two leads other than the second terminal, the second terminal is adapted to form a second terminal group with the other of the other two leads other than the first terminal, and the other two leads in the same terminal group other than the first terminal and the second terminal are adapted to form a third terminal group.

8. The relay according to claim 1, characterized in that, The relay includes at least two lead-out components; each lead-out component is arranged along a first direction parallel to the first sidewall, and each lead-out terminal of each lead-out component corresponds one-to-one with each lead-out terminal of the other lead-out components, and the corresponding leads of different lead-out components are adapted to be connected to the outside as the common terminal of the parallel switches in the relay.

9. The relay according to any one of claims 4-7, characterized in that, The contact unit includes stationary contact components that correspond one-to-one with the moving contact components; the stationary contact components are fixed relative to the housing, and each stationary contact component includes two stationary contacts for input current and output current respectively, and each stationary contact is connected to one of the leads; the moving contact components are used to disconnect or connect the electrical path of the two corresponding stationary contacts.

10. The relay according to claim 9, characterized in that, In the contact unit, the on / off states of each of the stationary contact components are the same, and when each of the moving contact components disconnects the electrical path of the corresponding two stationary contacts, the two adjacent moving contact components connect the electrical path between one of the corresponding two adjacent stationary 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 sidewall, 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 is used to electrically connect or disconnect with another corresponding stationary contact.

13. The relay according to claim 12, characterized in that, When the moving contact in each of the moving contact assemblies is disconnected from the stationary contact in the corresponding stationary contact assembly, at least one moving contact in the moving contact assembly is electrically connected to one of the stationary contacts in the adjacent stationary contact assembly, so as to establish an electrical path between one of the stationary contacts in each of the two adjacent stationary contact assemblies.

14. The relay according to claim 13, characterized in that, Each moving contact assembly includes two moving contacts, the fixed ends of which are respectively fixed to two stationary contacts, and the movable ends of which are respectively used to electrically connect or disconnect with the other stationary contact.

15. The relay according to claim 12, characterized in that, The second direction is perpendicular to the first sidewall; the direction of motion of the moving contact 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, there are two static contact components and two dynamic contact components.

17. The relay according to claim 16, characterized in that, The number of lead-out components and the number of contact units are both two; each lead-out component is arranged along a first direction perpendicular to the second direction and parallel to the first sidewall, and each lead-out end of the two lead-out components corresponds to each other, and the corresponding leads of the two lead-out components are suitable for external connection as the common terminal of the parallel switches in the relay.

18. The relay according to claim 17, characterized in that, In each contact unit, the two leads corresponding to one of the stationary contact components are a first lead and a second lead, and the two leads corresponding to the other stationary contact component are a third lead and a fourth lead; the first lead and the second lead are arranged along a third direction; the third lead and the fourth lead are arranged along a third direction; the first lead and the third lead are arranged along a first direction; the second lead and the fourth lead are arranged along the first direction; the third direction is perpendicular to the first direction and the second direction. Of the two lead-out components, the two third leads are arranged along the first direction and located between the two first leads along the first direction, and the two fourth leads are arranged along the first direction and located between the two second leads along the first direction.

19. The relay according to claim 18, characterized in that, The housing includes a mounting base, which 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 inserted into the first mounting cavity and the second mounting cavity from both ends of the mounting base in the first direction. Each stationary contact extends out of the housing along the third direction and is bent along the second direction to connect with the corresponding lead-out end.

20. The relay according to claim 19, characterized in that, The sidewall of the mounting base is provided with grooves for each of the stationary contact members to extend out. Each groove extends to the inner and outer wall surfaces of the mounting base, and each groove forms an inner groove and an outer groove on the inner and outer wall surfaces, respectively. The depth of the inner groove of the groove communicating 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 groove of the groove communicating with 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 components are arranged in a mirror image with a plane perpendicular to the first direction as their plane of symmetry.

22. The relay according to claim 18, characterized in that, The isolation structure includes four partitions, each of which is fixed relative to the housing and is used to electrically isolate two leads of different terminals of adjacent terminals in different terminal groups that are suitable for external connection circuits 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 sidewall; the partition wall extends along the first direction and is located between the two leads 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 sidewall, the partition wall protruding from the outer wall surface of the first sidewall and capable of electrically isolating at least two adjacent leads.

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

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