Relay, power distribution device, and vehicle

Abstract

The application relates to a relay, a power distribution device and a vehicle. The relay comprises a moving contact unit and an electromagnetic system. The moving contact unit comprises at least two moving contact assemblies arranged in parallel along a first direction. The electromagnetic system is arranged along a second direction perpendicular to the first direction with the moving contact unit. The electromagnetic system comprises a coil assembly and an armature assembly. The coil assembly comprises at least two coil windings arranged along the first direction. When each coil winding is magnetized, the coil windings jointly drive the armature assembly to move. The armature assembly can drive all the moving contact assemblies to move. The relay, the power distribution device and the vehicle of the application can reduce the contact resistance while realizing miniaturization.

Description

Technical Field

[0001] This application relates to the field of power distribution control technology, and in particular to a relay, a power distribution device, and a vehicle. 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, relay contact systems typically reduce overall contact resistance by using parallel structures. The lower the required contact resistance, the more branches are needed in the parallel structure of the relay, resulting in a larger contact system size. This necessitates a greater driving force from the electromagnetic system to ensure the contact system operates. Increasing the driving force can be achieved by increasing the number of coil turns or by using an external driving voltage. However, increasing the number of turns on the same coil winding leads to an excessively large coil size, hindering relay miniaturization and making the relay unsuitable for applications in confined spaces. Increasing the external driving voltage, on the other hand, results in higher energy consumption, which is detrimental to meeting user needs. Utility Model Content

[0004] Therefore, it is necessary to provide a relay, power distribution device, and vehicle that addresses the issue of how to reduce contact resistance while achieving miniaturization.

[0005] On one hand, this application provides a relay, including:

[0006] The movable contact unit includes at least two movable contact components arranged along a first direction and capable of being connected in parallel;

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

[0008] In the aforementioned relay, the moving contact unit includes at least two moving contact components arranged along a first direction and capable of being connected in parallel, thereby helping to reduce contact resistance. Furthermore, the coil assembly includes at least two coil windings, each arranged along the first direction, maintaining the consistency of the parallel branch formed by the coil windings and the moving contact components in the first direction. This improves space utilization, enhances the magnetic driving force of the coil assembly to ensure sufficient driving force for multiple moving contact components, and reduces the area occupied by the relay in the plane perpendicular to the first direction. Therefore, the relay of this application achieves miniaturization while significantly reducing contact resistance, thus meeting application requirements. Furthermore, since the electromagnetic system and the moving contact units are arranged along the second direction, the electromagnetic system can face each moving contact component in the second direction and easily establish an assembly relationship and linkage with each moving contact component. This arrangement helps to avoid the electromagnetic system and moving contact units occupying too much space in the first direction due to being staggered along the first direction. This allows the size of the relay in the first direction to be mainly determined by the moving contact unit, thus enabling reasonable and convenient control of the size in the first direction according to requirements. In addition, this arrangement also makes the distance between the driving end of the electromagnetic system and each moving contact component along the second direction closer and easier to achieve consistency, thereby helping to reduce the required size. The length of the driving mechanism is reduced, thus minimizing material consumption and costs, and preventing deformation and breakage due to excessive length. Furthermore, since the distance between the drive end of the electromagnetic system and each moving contact component along the second direction is easily aligned, it is advantageous to symmetrically place the driving mechanism between the electromagnetic system and each moving contact component. This results in more uniform force distribution on each moving contact component, reducing contact vibration or jitter. The driving force applied by the driving mechanism is more balanced, and the contact pressure of each moving contact component is more balanced, ensuring that the contact resistance meets the predetermined requirements. It also avoids greater local stress concentration in the driving mechanism, which could affect the mechanical lifespan. In addition, it facilitates standardized production, reducing production cycles and costs.

[0009] In some embodiments, the dimensions of each coil winding in the second direction are less than or equal to the dimensions of the coil winding in the first direction. This reduces the space occupied by the coil winding in the second direction while increasing space utilization in the first direction, resulting in a more rational layout of the coil winding and the moving contact unit in the first direction, thus facilitating the miniaturization of the relay.

[0010] In some embodiments, the armature assembly is located between the coil assembly and the moving contact unit along the second direction. This allows the armature assembly to be closer to the moving contact unit, reducing the length of the lever arm required for the armature assembly to actuate the moving contact unit, resulting in a more compact structure and miniaturized relay. Furthermore, it helps to reduce the length of the push member (such as the first push clip and the second push clip in some embodiments below) connecting the armature assembly and the moving contact unit along the second direction, preventing deformation and breakage of the push member. Additionally, it avoids the need for the push member to avoid interfering with the coil assembly, reducing structural complexity.

[0011] In some embodiments, the armature assembly can rotate about an axis parallel to the first direction based on the polarity change of the coil assembly. This rotation of the armature assembly about the axis drives the moving contact assembly. Since the axis is parallel to the first direction, the armature assembly and the moving contact unit are arranged compactly, facilitating miniaturization.

[0012] In some embodiments, the operating direction of each of the moving contact components is parallel to the second direction. Since the moving contact components in the moving contact unit are arranged along the first direction, setting the operating direction of the moving contact components to be parallel to the second direction means that only sufficient space needs to be provided for the moving contact components in the second direction to meet the contact action requirements, without needing to provide space for the moving contact components in the first direction for contact action. This allows the operating direction of the moving contact components to avoid the arrangement direction of multiple sets of moving contact components. Therefore, this structural arrangement makes reasonable use of the space in the first and second directions, avoiding the relay being too large in one direction (first or second direction), which is not conducive to miniaturization design. Furthermore, since the operating direction of the moving contact components is consistent with the arrangement direction of the electromagnetic system and the moving contact unit, and the armature assembly can easily achieve movement along the second direction to output power, compared to the case where the operating direction of the moving contact components is designed in other directions, the embodiments of this application do not require the design of a complex motion direction conversion mechanism, making the overall structure of the relay simpler and conducive to reducing its size.

[0013] In some embodiments, the relay further includes a driving mechanism comprising multiple sets of driving clips arranged along the first direction. Each set of driving clips is connected to the armature assembly and corresponds to each of the moving contact components. The armature assembly can drive each moving contact component to move via the multiple sets of driving clips. This embodiment avoids the problem of excessively large driving clips along the first direction, which could easily deform or break, due to the use of a single set of driving clips, thus improving the reliability of the driving mechanism in driving such a large moving contact unit.

[0014] In some embodiments, the relay further includes lead-out units corresponding to the moving contact unit. Each lead-out unit includes a first stationary lead-out component and a second stationary lead-out component. The first and second stationary lead-out components are respectively arranged on both sides of the moving contact unit along a third direction, with the first, second, and third directions being perpendicular to each other. Each moving contact component is configured to switch between a first switching state and a second switching state under the action of the armature component. In the first switching state, each moving contact component disconnects the electrical path between the first and second stationary lead-out components; in the second switching state, each moving contact component connects the electrical path between the first and second stationary lead-out components. In this embodiment, the stationary lead-out components in the first and second stationary lead-out components are used to meet the needs of current input and current output. Furthermore, the first and second stationary lead-out components are respectively arranged on both sides of the moving contact unit along a third direction, thereby reducing the space occupied by the lead-out units in the first and second directions, which helps to improve the compactness of the arrangement of components in the moving contact unit, thus contributing to the miniaturization of the relay.

[0015] In some embodiments, at least one of the moving contact components has at least two parallel branches arranged in a plane perpendicular to the first direction. Since the moving contact unit includes at least two moving contact components arranged along the first direction and capable of being connected in parallel, a parallel structure is extended in the first direction. Because the moving contact components have at least two parallel branches arranged in a plane intersecting the first direction, the parallel structure is extended using the plane intersecting the first direction. Simultaneously, the parallel structure is set in two spatial dimensions, which increases the number of parallel paths while avoiding excessive volume in one direction, thus preventing the relay from becoming too large. Therefore, the relay of this application achieves miniaturization while significantly reducing contact resistance, thus meeting usage requirements.

[0016] In some embodiments, each moving contact assembly includes two moving contacts. The two moving contacts of the same moving contact assembly can contact or separate from each other under the action of the armature assembly. When the two moving contacts are in contact, they form a parallel branch and conduct an electrical path between the first stationary lead-out assembly and the second stationary lead-out assembly. When the two moving contacts are separated, the electrical path between the first stationary lead-out assembly and the second stationary lead-out assembly is broken. In this embodiment, the contact of two moving contacts to form a parallel branch to conduct an electrical path between the first stationary lead-out assembly and the second stationary lead-out assembly can reduce contact resistance.

[0017] In some embodiments, within the same moving contact assembly, two moving contacts are arranged along the second direction. Each moving contact has a fixed end and a swinging end. The fixed end of one moving contact is fixed to the first stationary lead-out assembly, and the fixed end of the other moving contact is fixed to the second stationary lead-out assembly. The two swinging ends are respectively used to contact or separate from the fixed end of the other moving contact along the second direction. The moving contacts employ a swinging spring with a fixed end and a swinging end, achieving a simple parallel structure while utilizing the electromagnetic force generated between them when current flows through to enhance their contact pressure and improve their ability to withstand high fault currents. This allows the relay product to be suitable for high-voltage or high-current applications.

[0018] In some embodiments, in at least one of the moving contact components, both moving contacts include multiple current-guiding branches, and the current-guiding branches on the two moving contacts correspond one-to-one. The multiple current-guiding branches are arranged along the first direction and configured to be connected in parallel when the first static lead-out component and the second static lead-out component are electrically connected, and to be connected in parallel with each current-guiding branch on the other moving contact. Since the arrangement direction of the multiple current-guiding branches and the arrangement direction of the multiple moving contact components are both the first direction, with this configuration, the moving contact unit can not only use the multiple moving contact components to expand parallel branches in the first direction, but also use the multiple current-guiding branches to expand parallel branches inside the moving contact component in the first direction, thereby further helping to reduce contact resistance; and because the number of parallel branches is increased, the moving contact unit in the relay is less likely to be completely disconnected due to vibration, that is, the probability of the relay disconnecting all parallel branches is greatly reduced, thereby helping to ensure the working stability of the relay, giving the relay good shock resistance, and being able to meet the requirements for mechanical shock resistance. For applications where there is bumpy traffic (such as in automobiles), this relay has significant advantages.

[0019] In some embodiments, the number of both the moving contact unit and the lead-out unit is at least two. Each moving contact unit is arranged along the second direction. When each moving contact unit is in the first switching state, it is electrically connected to an adjacent moving contact unit, such that in the two lead-out units corresponding to the two adjacent moving contact units, the first static lead-out component of one lead-out unit is connected in series with the second static lead-out component of the other lead-out unit. When each moving contact unit is in the second switching state, each lead-out unit is disconnected from each other. In this embodiment, the moving contact units can switch between series and parallel connections 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.

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

[0021] In some embodiments, both the first static lead-out assembly and the second static lead-out assembly include a plurality of static leads arranged along the first direction. Each static lead-out member in the first static lead-out assembly and each static lead-out member in the second static lead-out assembly corresponds one-to-one with each moving contact assembly. Each moving contact assembly can connect or disconnect the electrical path between the corresponding two static leads-out members. In this embodiment, the static leads in the first and second static lead-out assemblies are used to meet the needs of current input and current output. Furthermore, since the arrangement direction of the plurality of static leads in the first static lead-out assembly and the arrangement direction of the plurality of static leads in the second static lead-out assembly are both the first direction, they are consistent with the arrangement direction of the plurality of moving contact assemblies, which facilitates the miniaturization of the relay.

[0022] In some embodiments, the relay further includes a mounting base in which the moving contact unit is mounted, and all of the stationary leads extend out of the mounting base in the third direction.

[0023] In some embodiments, the lead-out unit further includes a first external lead-out member and a second external lead-out member. One end of each of the static lead-out members in the first static lead-out assembly extending from the mounting base is connected to the first external lead-out member; one end of each of the static lead-out members in the second static lead-out assembly extending from the mounting base is connected to the second external lead-out member. This allows the first and third static lead-out pieces to be used as a single lead-out end, and the second and fourth static lead-out pieces to be used as a single lead-out end, enabling the first and second moving contact components to be connected in parallel.

[0024] In some embodiments, the relay further includes a mounting base in which the moving contact unit is mounted, and all the stationary leads have connection terminals located outside the mounting base, all of which are located on the same side of the mounting base in the second direction. Because the connection terminals are all located on the same side of the mounting base in the second direction, it facilitates connection to external circuits and reduces space requirements.

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

[0026] Since all the connection terminals are located on the outer side of the outer wall of the mounting base that is closer to the moving contact unit in the second direction, the distance from each connection terminal to the moving contact unit in the moving contact unit is small. This reduces the amount of conductive material consumed by each stationary lead-out piece to lead the connection terminal out of the mounting base, thereby reducing costs.

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

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

[0029] Since the first mounting port and the second mounting port are located at opposite ends of the mounting base in the first direction, the two moving contact components can be installed from the first mounting port into the first mounting cavity and from the second mounting port into the second mounting cavity, respectively. This allows the sidewall of the mounting base to only have grooves corresponding to the positions of the two moving contact components to accommodate the lead-out requirements of the corresponding moving contact components, without the need to open a full groove along the first direction to accommodate the lead-out requirements of the two moving contact components. Consequently, the technical solution of this application reduces the groove depth, thereby reducing the probability of deformation of the mounting base and improving the reliability of the relay product. Furthermore, the electromagnetic system can be installed into the base body from the third mounting port. Since the third mounting port is located at one end of the mounting base in the first direction, the electromagnetic system and the moving contact unit can be installed in the same direction, making it easy to install both the electromagnetic system and the moving contact unit into the mounting base. The structure is simple, the installation is convenient, and it is conducive to assembly with automated equipment, resulting in high installation efficiency. Since the first mounting plate is connected to the inner wall of the base body, the first mounting plate can reinforce the base body structurally, making the base body less prone to deformation. Consequently, even if the stationary contact is impacted by the moving contact during contact operation, the base body can be less likely to be deformed or damaged due to the reinforcement of the first mounting plate, thus making the relay less prone to damage and extending the service life of the relay.

[0030] In some embodiments, there are two moving contact units, namely a first moving contact unit and a second moving contact unit; there are also two lead-out units, namely a first lead-out unit and a second lead-out unit; the first moving contact unit and the second moving contact unit are arranged along the second direction, with the first moving contact unit located between the armature assembly and the second moving contact unit, and the first lead-out unit corresponding to the first moving contact unit, and the second lead-out unit corresponding to the second moving contact unit; when the two moving contact units are in the first switch state, the two moving contact units are electrically connected, so that the first static lead-out component in the first lead-out unit and the second static lead-out component in the second lead-out unit are connected in series; when the two moving contact units are in the second switch state, the two lead-out units are disconnected from each other. Thus, the first lead-out unit and the second lead-out unit respectively meet the current input and current output requirements of the first moving contact unit and the second moving contact unit, and also enable the relay to switch between series and parallel functions 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.

[0031] In some embodiments, the two static leads of each first static lead assembly are a first static lead plate and a third static lead plate, and the two static leads of each second static lead assembly are a second static lead plate and a fourth static lead plate. In the first lead unit and the second lead unit, the connection terminals of the first static lead plate and the third static lead plate of one are arranged along the first direction between the connection terminals of the first static lead plate and the third static lead plate of the other, and the connection terminals of the second static lead plate and the fourth static lead plate of one are arranged along the first direction between the connection terminals of the second static lead plate and the fourth static lead plate of the other. In this embodiment, this structure allows at least one set of two connection terminals at the same end for connecting the circuit to be arranged adjacently, thereby facilitating subsequent circuit connections and insulation design between connection terminals connected to different load terminals.

[0032] In some embodiments, in the first lead-out unit and the second lead-out unit, the connection terminals of the two first stationary lead-out pieces are arranged adjacent to each other in the first direction; the connection terminals of the two second stationary lead-out pieces are arranged adjacent to each other in the first direction; the connection terminals of the two third stationary lead-out pieces are arranged adjacent to each other in the first direction; and the connection terminals of the two fourth stationary lead-out pieces are arranged adjacent to each other in the first direction. With this structural arrangement, at least one set of two connection terminals for connecting to the same end of the circuit can be arranged adjacently, so that the two connection terminals can be externally connected to the same end of the circuit. Compared to the case where two connection terminals externally connected to the same terminal are separated by other connection terminals, this structural arrangement of the present application is beneficial for reducing connection difficulty and for isolating two connection terminals externally connected to different terminals.

[0033] In some embodiments, the relay further includes an isolator fixed relative to the mounting base and electrically isolating the connection terminals of the first lead unit and the second lead unit that are adjacent to each other in the first direction. In this embodiment, the isolator increases the creepage distance between the connection terminals of the two terminals used for external circuit connection at corresponding positions, thereby improving the reliability of the relay performance.

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

[0035] In another aspect, this application provides a vehicle including the power distribution device as described above. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the internal structure of a relay according to one embodiment of this application.

[0037] Figure 2 for Figure 1 The diagram shows an exploded view of part of the relay structure.

[0038] Figure 3 for Figure 2 A bottom view showing a partial structure of the relay's contact system.

[0039] Figure 4 This is a schematic diagram of the structure of the moving contact in the contact system of a relay according to an embodiment of this application.

[0040] Figure 5 This is a schematic diagram of the structure of the relay in one embodiment of this application, in which the electromagnetic system and the contact system are assembled into the mounting base.

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

[0042] Figure 7 For a relay edge in one embodiment of this application Figure 6 Schematic diagram of the cross-sectional structure of the middle II line.

[0043] Figure 8 This is a schematic diagram of the mounting base of the relay in one embodiment of this application.

[0044] Figure 9 for Figure 8 A schematic diagram of the relay mounting bracket from another perspective is shown.

[0045] Figure 10 This is a schematic diagram of the structure of a relay according to another embodiment of this application, in which the electromagnetic system and the contact system are assembled to the mounting base.

[0046] Figure 11 for Figure 10 The diagram shows the structure of the relay contact system.

[0047] Figure 12 for Figure 11 The diagram shown is a top view of part of the relay structure.

[0048] Figure 13 for Figure 10 The schematic diagram shown is of the structure of the relay mounting base.

[0049] Figure 14 This is a schematic diagram of the structure of a relay contact system according to one embodiment of the present application, in which a first isolator is provided between two first stationary leads.

[0050] Figure 15 for Figure 14The diagram shows an exploded view of the first stationary lead and the first isolator in the relay contact system.

[0051] Figure 16 This is a schematic diagram of the structure of a relay contact system according to an embodiment of the present application, in which a first isolator is provided between two second stationary leads.

[0052] Figure 17 for Figure 16 The diagram shows an exploded view of the second stationary lead and the second isolator in the relay contact system.

[0053] Figure 18 This is a three-dimensional structural diagram of a relay according to another embodiment of this application.

[0054] Figure 19 This is a top view of the internal structure of a relay according to another embodiment of this application.

[0055] Figure 20 This is a three-dimensional structural diagram of the internal structure of a relay according to another embodiment of this application.

[0056] Figure 21 This is a schematic diagram of the mounting base for a relay according to one embodiment of this application.

[0057] Figure label:

[0058] 10. Contact system; 10a. Lead-out unit; 11. First stationary lead-out assembly; 12. Second stationary lead-out assembly; 111. First stationary lead-out piece; 111a. First bending portion; 111b. First connecting terminal; 112. Second stationary lead-out piece; 112a. Second bending portion; 112b. Second connecting terminal; 113. Third stationary lead-out piece; 113a. Third bending portion; 113b. Third connecting terminal; 114. Fourth stationary lead-out piece; 114a. Fourth bending portion; 114b. Fourth connecting terminal; 10a1. First external lead-out piece; 10a2. Second external lead-out piece; 10a3. Third external lead-out piece; 10a4. Fourth external lead-out piece; P1. Stationary lead-out piece one; P2. Stationary lead-out piece two; P3. Stationary lead-out piece 3; P4, Stationary lead-out piece 4; P5, Stationary lead-out piece 5; P6, Stationary lead-out piece 6; P7, Stationary lead-out piece 7; P8, Stationary lead-out piece 8; D1, Terminal 1; D2, Terminal 2; D3, Terminal 3; D4, Terminal 4; D5, Terminal 5; D6, Terminal 6; D7, Terminal 7; D8, Terminal 8; 10b, Moving contact unit; 13, Moving contact assembly; 13a, Moving contact element; A, First contact element; B, Second contact element; 13a1, Fixed end; 13a2, Swinging end; 13a3, Flow guide branch; 13a4, Gap; 13b, Stationary contact point; 13c, Moving contact point; 131, First moving contact assembly; 1311, First moving contact element; 132, Second moving contact assembly; 1321, Second moving contact element; 101, First moving contact element; 101. Contact unit; 102. Second moving contact unit; 103. First lead-out unit; 104. Second lead-out unit; 20. Electromagnetic system; 21. Coil assembly; 211. Coil winding; 22. Armature assembly; 221. First connecting arm; 222. Second connecting arm; 22a. Rotating shaft; 22b. Mounting bracket; 30. Mounting base; 30a. First end face; 30b. Second end face; 30c. Inner wall surface; 30d. Outer wall surface; 30e. Baffle; 301. First mounting cavity; 3011. Second positioning buckle; 302. Second mounting cavity; 3021. Third positioning buckle; 303. Third mounting cavity; 31. Base body; 311. Side wall portion; 311a. First side wall; 311b. Second side wall; 311c. Third side wall ; 311d, Fourth sidewall; 312, Bottom wall; 32, First mounting plate; 33, Second mounting plate; 331, First positioning buckle; C1, First groove; C11, Inner groove of the first groove; C12, Outer groove of the first groove; C2, Second groove; C21, Inner groove of the second groove; C22, Outer groove of the second groove; C3, Third groove; C31, Inner groove of the third groove; C32, Outer groove of the third groove; C4, Fourth groove; C41, Inner groove of the fourth groove; C42, Outer groove of the fourth groove; ST, Limiting mating part; 40, Pushing mechanism; 41, First set of push clips; 411, First push clip; 42, Second set of push clips; 421, Second push clip; 50, First isolation piece;50a, First receiving groove; 51, First baffle; 52, Second baffle; 53, Third baffle; 60, Second spacer; 60a, Second receiving groove; 61, Fourth baffle; 62, Fifth baffle; 63, Sixth baffle; 70, Third spacer; 80, Fourth spacer; S, Clamping part; SC, Clamping groove. Detailed Implementation

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] Combination Figure 1 and Figure 2As shown, this application provides a relay including an electromagnetic system 20 and a contact system 10. The electromagnetic system 20 generates electromagnetic force when current is applied to drive the contact system 10 to switch between on and off states, thereby connecting or disconnecting a circuit. For example, in some embodiments, this relay is adapted to a power distribution device, where the switching state of the relay enables the power distribution device to distribute power to electrical equipment. Understandably, this power distribution device can be applied to vehicles; for example, in some embodiments, the vehicle's power distribution device includes a relay, which manages the vehicle's power supply (such as a battery pack) to distribute power to structures within the vehicle, such as motors or navigation modules.

[0064] In some embodiments, the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22. The armature assembly 22 is movable based on changes in the polarity of the coil assembly 21. It should be noted that the armature assembly 22 can be a direct-drive armature assembly 22 or a rotary armature assembly 22. Specifically, the direct-drive armature assembly 22 drives the contact system 10 to switch states through linear motion, while the rotary armature assembly 22 drives the contact system 10 to switch states through rotation or oscillation. In this application, the type of armature assembly 22 is not limited.

[0065] Combination Figure 2 and Figure 3 As shown, the contact system 10 includes lead-out units 10a and moving contact units 10b arranged corresponding to each other. Lead-out unit 10a includes a first stationary lead-out component 11 and a second stationary lead-out component 12. The first stationary lead-out component 11 and the second stationary lead-out component 12 can be understood as a current input terminal group and a current output terminal group, to meet the needs of the current input and output moving contact unit 10b. It should be noted that one moving contact unit 10b corresponds to one lead-out unit 10a; that is, the lead-out unit 10a and the moving contact unit 10b are matched, such that the first stationary lead-out component 11 and the second stationary lead-out component 12 serve as the current input terminal and the current output terminal, respectively.

[0066] The movable touch unit 10b includes a plurality of movable touch components 13. The plurality of movable touch components 13 are arranged along a first direction (e.g., Figure 2 Arranged in the X direction.

[0067] For ease of understanding, Figure 2 The contact system 10 shown is an example. Figure 2 In the contact system 10 shown, the movable contact unit 10b includes two movable contact components 13 arranged along a first direction.

[0068] For ease of description, the two moving contact components 13 will be referred to as "first moving contact component 131" and "second moving contact component 132" in some places below. Understandably, the number of moving contact components 13 in the moving contact unit 10b is not limited to two. In some embodiments, there may be three or more moving contact components 13 in the moving contact unit 10b. The number of moving contact components 13 in the moving contact unit 10b is not limited here.

[0069] The moving contact unit 10b is configured to switch between a first switching state and a second switching state. In the first switching state, all moving contact components 13 disconnect the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12; in the second switching state, the multiple moving contact components 13 are connected in parallel and all connect the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12.

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

[0071] It should be noted that the terms "common conduction" and "common disconnection" indicate the consistency of the switching actions of each moving contact component 13 in achieving the circuit's conduction or disconnection. That is, when the moving contact unit 10b switches from the first switching state to the second switching state, all moving contact components 13 switch the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12 from disconnected to conducted. Correspondingly, when the moving contact unit 10b switches from the second switching state to the first switching state, all moving contact components 13 switch the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12 from conducted to disconnected.

[0072] In the second switching state, all moving contact components 13 conduct the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12, and the multiple moving contact components 13 are connected in parallel with each other, which helps to reduce contact resistance. Moreover, since the multiple moving contact components 13 are arranged along the first direction, the multiple moving contact components 13 are configured in parallel in the first direction, which helps to reduce contact resistance.

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

[0074] It should be noted that in the above embodiments, the moving contact component 13 is configured to have at least two parallel branches arranged in a plane intersecting the first direction. This means that the moving contact component 13 forms a parallel structure through its at least two parallel branches, thereby expanding the parallel structure using the plane intersecting the first direction. Thus, the relay of this application implements a parallel structure in two spatial dimensions, which increases the number of parallel paths while avoiding excessive volume in one direction, thus preventing the relay from becoming too large. Therefore, the relay of this application achieves miniaturization while reducing contact resistance, thus meeting usage requirements.

[0075] It should be noted that, in combination Figure 2 and Figure 3 As shown, the first moving contact assembly 131 and the second moving contact assembly 132 are arranged with moving contacts 13b and stationary contacts 13c opposite each other in a second direction. In the second switching state, the moving contact 13b makes electrical contact with the corresponding moving contact 13c, thereby conducting the electrical path between the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12. Because the embodiment of this application increases the number of moving contact assemblies 13, the contact system in the relay is less likely to be completely disconnected due to vibration. That is, the probability of all moving contacts 13b and stationary contacts 13c being disconnected is greatly reduced, which helps to ensure the working stability of the relay, giving the relay good shock resistance and meeting the requirements for mechanical shock resistance. For some applications where there is bumpy operation (such as in automobiles), this relay has obvious advantages. Furthermore, with this structural design, if some parallel branches of the relay freeze and disconnect due to low temperature while operating in a low-temperature environment, the current flowing through the undisconnected parallel branches increases and generates heat, allowing the frozen parallel branches to thaw and regain conductivity. This makes the relay more resistant to low-temperature non-conductivity and more adaptable to different environments.

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

[0077] In an embodiment of the electromagnetic system 20 including a coil assembly 21 and an armature assembly 22, multiple moving contact assemblies 13 can operate synchronously under the drive of the armature assembly 22, and cause the moving contact unit 10b to switch between a first switching state and a second switching state.

[0078] In some embodiments, in the same moving contact assembly 13, at least one parallel branch is connected to another parallel branch along a second direction (e.g., Figure 2 The first direction is arranged in the Y direction, and the second direction intersects with the first direction.

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

[0080] Since at least one parallel branch is arranged along the second direction with another parallel branch, the moving contact unit 10b simultaneously extends the parallel structure in both the first and second directions. This helps to reduce contact resistance and avoids the parallel structure occupying too much volume in one direction, which would result in an excessively large relay size. Therefore, the relay of this application achieves miniaturization while reducing contact resistance, thus meeting usage requirements.

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

[0082] In this application embodiment, the number of parallel branches is not limited. The number of parallel branches in the first direction and the second direction can be set as needed to ensure that the total contact resistance of the contact system meets the requirements, thereby reducing heat generation and lowering the temperature rise.

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

[0084] In some implementations, the second direction is perpendicular to the first direction, so that the parallel branches can be arranged in two mutually perpendicular dimensions. This structure helps the moving contact component 13 to improve the utilization of the assembly space in the relay, so that the overall shape of the relay can be made more square (for example, the overall appearance of the relay can be cubic except for the necessary lead-out part structure), thus achieving miniaturization.

[0085] Combination Figure 3 As shown, at least one movable contact component 13 (e.g., a second movable contact component 132) includes two movable contacts 13a.

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

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

[0088] In some embodiments, the length direction of the movable contact 13a is parallel to a third direction (e.g., Figure 2 The first direction (Z-direction) is parallel to the second direction. Assuming both the second and third directions are perpendicular to the first direction, the two moving contacts 13a of the moving contact assembly 13 are arranged in the same plane parallel to both the second and third directions. Thus, when the two moving contacts 13a contact each other to form a parallel structure, each moving contact 13a can constitute a parallel branch. Therefore, arranging the two moving contacts 13a in a plane perpendicular to the first direction means that at least two parallel branches can be formed in that plane.

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

[0090] When the two swing ends 13a2 of the same moving contact component 13 are electrically in contact with the fixed end 13a1 of the other moving contact component 13a in the second direction, the two moving contacts 13a form parallel branches to conduct the electrical path between the first static lead-out component 11 and the second static lead-out component 12, thereby causing the moving contact unit 10b to switch to the second switch state.

[0091] Correspondingly, when both swing ends 13a2 move away from the fixed end 13a1 of the other moving contact 13a along the second direction, both moving contacts 13a disconnect the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, thereby causing the moving contact unit 10b to switch to the first switch state.

[0092] In this embodiment, on the one hand, the two moving contacts 13a are arranged along a second direction perpendicular to the first direction; on the other hand, the two moving contacts 13a are used to form a parallel branch by contacting each other to conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12. This reduces the contact resistance and realizes the parallel structure extended in both the first and second spatial dimensions, which is beneficial for miniaturization. Both moving contacts 13a adopt a swing-type moving spring with a fixed end 13a1 and a swing end 13a2. This not only realizes the construction of a parallel structure with a simple structure, but also utilizes the electromagnetic force generated between them when current flows 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 application environments.

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

[0094] For example, combining Figure 3 As shown, in some embodiments, the moving contact component 13 is configured such that when switching between a first switch state and a second switch state, the two moving contacts 13a of the moving contact component 13 move in opposite directions. The "movement in opposite directions" and the "movement in the same direction" mentioned below refer to the direction of movement relative to the corresponding stationary contact 13b (described in detail below). In this embodiment, it can be regarded as the movement direction in the second direction being opposite or the same.

[0095] For ease of description, the following will be based on Figure 2 The switching action of the moving contact assembly is explained using two moving contacts 13a (hereinafter referred to as "first contact A" and "second contact B") located in the second moving contact assembly 132 as examples, but this does not mean that the switching action of the moving contact assembly is limited to this.

[0096] Combination Figure 2 and Figure 3As shown, the swing end 13a2 of the first contact A can contact or separate from the fixed end 13a1 of the second contact B by swinging. Correspondingly, the swing end 13a2 of the second contact B can contact or separate from the fixed end 13a1 of the first contact A by swinging. Figure 3 The diagram shows the state in which the first contact A and the second contact B are separated from each other. At this time, because the first contact A and the second contact B are separated from each other, the first static lead-out assembly 11 and the second static lead-out assembly 12 are electrically disconnected (i.e., no current flows), and thus the circuit is in the first switching state.

[0097] by Figure 3 From the perspective of the first switch state to the second switch state, during the process of switching from the first switch state, the swing end 13a2 of the first contact A swings clockwise relative to the fixed end 13a1 of the first contact A, eventually causing the moving contact 13c on the swing end 13a2 of the first contact A to contact the stationary contact 13b on the fixed end 13a1 of the second contact B; correspondingly, the swing end 13a2 of the second contact B also swings clockwise relative to the fixed end 13a1 of the second contact A, eventually causing the moving contact 13c on the swing end 13a2 of the second contact B to contact the stationary contact 13b on the fixed end 13a1 of the first contact A, thereby opening the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12, so that the moving contact component 13 is in the second switch state.

[0098] In another embodiment, the first contact A and the second contact B are not limited to being arranged along the second direction. For example, by adjusting the position or structure of the first contact A and the second contact B, the two movable contacts 13a can move in the same direction to achieve switching between the first switch state and the second switch state. That is, the movable contact assembly 13 is configured such that when switching from the first switch state to the second switch state, the swing ends 13a2 of the two movable contacts 13a of the movable contact assembly 13 move in the same direction; and when switching from the second switch state to the first switch state, the swing ends 13a2 of the two movable contacts 13a of the movable contact assembly 13 also move in the same direction. The structural arrangement between the two movable contacts 13a of the movable contact assembly 13 is not limited here.

[0099] In some embodiments, the first stationary lead-out component 11 and the second stationary lead-out component 12 are respectively arranged on both sides of the moving contact unit 10b along a third direction. The moving contact component 13 has an operating direction, which can be understood as a direction parallel to the tangent direction corresponding to the swing end 13a2 of the moving contact 13a in its undeformed natural state, or it can be understood as the direction of the normal at the contact position of the stationary contact 13b corresponding to the swing end 13a2. In this embodiment, the operating direction of the moving contact component 13 is parallel to the second direction, that is, when the moving contact component 13 switches from the first switch state to the second switch state, at the instant when the moving contact 13a in its natural state deforms, the moving direction of the swing end 13a2 is parallel to the second direction.

[0100] The first, second, and third directions are perpendicular to each other. With this structural arrangement, the moving contacts 13a in the moving contact unit 10b are arranged compactly to reduce space waste, thereby facilitating miniaturization.

[0101] Since the direction of motion of the moving contact component 13 is parallel to the second direction, the moving contact component 13 can obtain sufficient space to meet the contact action requirements in the second direction, without the need to provide space for the moving contact component 13 to perform contact action in the first direction. For each moving contact component 13 arranged along the first direction, this structural arrangement makes reasonable use of the space in the first and second directions, avoiding the relay being too large in one direction (first direction or second direction), which is not conducive to miniaturization design.

[0102] In some embodiments, the electromagnetic system 20 and the moving contact unit 10b are arranged along the second direction. By setting the operating direction of the moving contact assembly 13 to be parallel to the second direction, the arrangement direction of the electromagnetic system 20 and the moving contact unit 10b is consistent with the operating direction of the moving contact assembly 13. Since the armature assembly 22 in the electromagnetic system 20 can easily move along the second direction to output power, compared to cases where the operating direction of the moving contact assembly 13 is designed in other directions, this embodiment does not require a complex motion direction conversion mechanism, making the overall relay structure simpler and reducing its size.

[0103] Continue to combine Figure 3As shown, the fixed end 13a1 of the moving contact 13a has a stationary contact 13b, and the swing end 13a2 of the moving contact 13a has a moving contact 13c. The stationary contact 13b and the moving contact 13c of one moving contact 13a correspond to the moving contact 13c and the stationary contact 13b of the other moving contact 13a, respectively. In the two moving contacts 13a of the same moving contact assembly 13, the two moving contacts 13c can come into contact with or separate from the corresponding stationary contact 13b under the action of the corresponding swing end 13a2. In this way, the reliability of the contact between the two moving contacts 13a can be improved by using the moving contact 13c and the stationary contact 13b.

[0104] It should be noted that the stationary contact 13b and the moving contact 13c can be directly disposed on the moving contact 13a, or they can be indirectly connected to the moving contact 13a. Taking the stationary contact 13b as an example, regardless of whether the stationary contact 13b is directly disposed on the fixed end 13a1 of the moving contact 13a, or indirectly connected to the fixed end 13a1 of the moving contact 13a, it can be understood that the fixed end 13a1 of the moving contact 13a has a stationary contact 13b. For example, in some embodiments, the fixed end 13a1 of the moving contact 13a is connected to the first stationary lead-out assembly 11, and the first stationary lead-out assembly 11 is connected to the stationary contact 13b, which can be understood as the fixed end 13a1 of the moving contact 13a having a stationary contact 13b.

[0105] Combination Figure 2 and Figure 4 As shown, in some embodiments, in at least one moving contact assembly 13, both moving contacts 13a include multiple current-guiding branches 13a3, and the current-guiding branches 13a3 on the two moving contacts 13a correspond one-to-one. The multiple current-guiding branches 13a3 are arranged along a first direction and are configured to be connected in parallel when the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 are electrically connected, and to be connected in parallel with each current-guiding branch 13a3 on the other moving contact 13a. That is, since the arrangement direction of the multiple current-guiding branches 13a3 and the arrangement direction of the multiple moving contact assemblies 13 are both the first direction, with this configuration, the moving contact unit 10b can not only use the multiple moving contact assemblies 13 to expand parallel branches in the first direction, but also use the multiple current-guiding branches 13a3 to expand parallel branches inside the moving contact assembly 13 in the first direction, thereby helping to reduce contact resistance.

[0106] It should be noted that the flow guide branch 13a3 can extend from the fixed end 13a1 of the moving contact 13a to the swing end 13a2, or it can be part of the structure between the fixed end 13a1 and the swing end 13a2 of the moving contact 13a.

[0107] Continue to combine Figure 4As shown, the movable contact 13a is an integral structural component, and the movable contact 13a has a slit 13a4, which divides the movable contact 13a into multiple flow-guiding branches 13a3. This structure, which divides the movable contact 13a into multiple flow-guiding branches 13a3 through the slit 13a4, is simple and easy to implement.

[0108] The number of flow guide branches 13a3 can be two or more. There is no limit to the number of flow guide branches 13a3 here.

[0109] It should be noted that the slit 13a4 can extend from the fixed end 13a1 to the swing end 13a2, that is, the slit 13a4 divides the swing end 13a2 of the moving contact 13a into multiple sub-parts. At this time, the flow guiding branch 13a3 extends from the fixed end 13a1 of the moving contact 13a to the swing end 13a2, and the multiple flow guiding branches 13a3 divided by the slit 13a4 each have their own corresponding swing end 13a2. Therefore, the swing ends 13a2 of each flow guiding branch 13a3 are separated from each other, but connected as one unit relative to the swing end 13a2 of the moving contact 13a. This separation of the swing ends 13a2 of each flow guiding branch 13a3 helps to reduce the driving force when driving the swing end 13a2 to swing, making the switching action of the moving contact assembly 13 between the first switch state and the second switch state more flexible and reliable.

[0110] Furthermore, each flow-guiding branch 13a3 possesses a degree of independence, resulting in minimal restraining force between them when they oscillate. This prevents them from simultaneously separating from their corresponding stationary contacts 13c due to vibration. Consequently, this type of moving contact 13a further reduces the probability of all moving contacts 13b disconnecting from their corresponding stationary contacts 13c due to vibration, thus improving the relay's shock resistance.

[0111] The slit 13a4 can also be a segmentation of a portion of the structure of the moving contact 13a located between the fixed end 13a1 and the swing end 13a2. That is, the slit 13a4 does not extend to the swing end 13a2. In this way, each current-guiding branch 13a3 in the moving contact 13a is equivalent to forming multiple parallel branches arranged in the first direction between the fixed end 13a1 and the swing end 13a2. Thus, the swing end 13a2 and the fixed end 13a1 of the moving contact 13a are electrically connected through multiple parallel current-guiding branches 13a3. In this way, when the moving contact assembly 13 is in the second switching state, the two moving contact assemblies 13 are arranged in parallel, the two moving contacts 13a in the moving contact assembly 13 are arranged in parallel, and the multiple current-guiding branches 13a3 in the moving contact 13a are arranged in parallel. In this way, the parallel structure in the moving contact unit 10b is expanded in multiple directions by utilizing these parallel arrangements, so as to reduce the contact resistance.

[0112] like Figure 4As shown, each moving contact 13a has three current-conducting branches 13a3, which can form three parallel branches. By setting the number of current-conducting branches on each moving contact 13a to three, the requirement of ultra-low contact resistance can be met, redundant design can be avoided, and structural complexity can be reduced.

[0113] For the moving contact assembly 13, if each of the two moving contacts 13a of the moving contact assembly 13 is provided with three current-conducting branches 13a3, then when the moving contact assembly 13 is in the second switching state, six parallel branches will be formed in the moving contact assembly 13. Correspondingly, if the moving contact unit 10b includes two moving contact assemblies 13, then the moving contact unit 10b includes twelve parallel branches, which helps to reduce the total contact resistance in order to meet the ultra-low contact resistance requirement. For example, in some embodiments, when the moving contact unit 10b is in the second switching state, the total contact resistance is less than 0.05mΩ.

[0114] For example, combining Figure 4 As shown, a stationary contact 13b is provided at the fixed end 13a1 of the moving contact 13a corresponding to each flow guide branch 13a3, and a moving contact 13c is provided at the swing end 13a2 of each flow guide branch 13a3.

[0115] To further illustrate the structure of the contact system 10, the following description uses the moving contact unit 10b, which includes two moving contact components 13, as an example to illustrate the structure of the relay. However, this does not mean that the number and arrangement of the moving contact components 13 in the relay contact system 10 are limited to this.

[0116] See again Figure 2 As shown, the movable contact unit 10b includes two movable contact components 13, namely a first movable contact component 131 and a second movable contact component 132. The number of movable contacts 13a and the number of flow guiding branches 13a3 in each movable contact component 13 can be equal or unequal, and the specific shape or size of each movable contact 13a can also be different. No specific limitation is made here, as long as the first movable contact component 131 and the second movable contact component 132 as a whole conform to the aforementioned description of the movable contact component 13.

[0117] Combination Figure 2 and Figure 3 As shown, for ease of description, the movable contact 13a in the first movable contact assembly 131 is named "first movable contact 1311", and the movable contact 13a in the second movable contact assembly 132 is named "second movable contact 1321".

[0118] One of the first moving contacts 1311 and one of the second moving contacts 1321 are arranged along a first direction, and another first moving contact 1311 and another second moving contact 1321 are also arranged along the first direction. With this structural arrangement, the first moving contacts 1311 and the second moving contacts 1321 are neatly arranged in both the first and second directions, which helps to improve the compactness of the arrangement between the structural components, reduce wasted space, and thus reduce the space occupied by the moving contact unit 10b in the relay, thereby facilitating the miniaturization of the relay.

[0119] The structure of the first movable contact 1311 can be the same as or different from that of the second movable contact 1321. The structures of the first movable contact 1311 and the second movable contact 1321 can be referred to the above description of the movable contact 13a, and will not be repeated here. For example, in an embodiment where the movable contact 13a includes multiple flow guide branches 13a3, the corresponding first movable contact 1311 and second movable contact 1321 can also adopt this structure including multiple flow guide branches 13a3.

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

[0121] For ease of description, the flow guide branch 13a3 in the first moving contact 1311 is referred to as the "first flow guide branch", and the flow guide branch 13a3 in the second moving contact 1321 is referred to as the "second flow guide branch".

[0122] The number of first guide branches can be two or more, and the number of second guide branches can be two or more. The number of first guide branches and second guide branches is not limited here.

[0123] For ease of understanding, the following will use... Figure 1 and Figure 2 The relay contact system 10 shown is an example. Figure 2 In the contact system 10 shown, each of the two first moving contacts 1311 of the first moving contact assembly 131 includes three first flow branches. When the two first moving contacts 1311 of the first moving contact assembly 131 are in contact with each other, the first moving contact assembly 131 includes six first flow branches. Thus, when the first moving contact assembly 131 is in the second switching state, the first moving contact assembly 131 has six branches connected in parallel with each other.

[0124] Correspondingly, each of the two second moving contacts 1321 of the second moving contact assembly 132 includes three second flow branches. When the two second moving contacts 1321 of the second moving contact assembly 132 are in contact with each other, the second moving contact assembly 132 includes six second flow branches. Thus, when the second moving contact assembly 132 is in the second switching state, the second moving contact assembly 132 has six branches connected in parallel with each other.

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

[0126] Combination Figures 5 to 7 As shown, the relay also includes a mounting base 30, and the moving contact assembly 13 (such as the first moving contact assembly 131 and the second moving contact assembly 132) and the electromagnetic system 20 are all mounted in the mounting base 30.

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

[0128] With this structural configuration, since the first mounting port and the second mounting port are located at both ends of the mounting base 30 in the first direction, and the first moving contact component 131 and the second moving contact component 132 are respectively installed into the mounting base 30 from the first mounting port and the second mounting port, the ease of installation is improved.

[0129] In this embodiment, the first moving contact component 131 and the second moving contact component 132 are installed into the mounting base 30 from the first mounting port and the second mounting port, respectively. Therefore, the advantage of setting the moving contact unit 10b to arrange the first moving contact component 131 and the second moving contact component 132 along the first direction is that the first moving contact component 131 and the second moving contact component 132 are arranged in layers in the mounting base 30. In this way, the side wall of the mounting base 30 only needs to open independent grooves for the positions of the first moving contact component 131 and the second moving contact component 132 to meet the needs of the corresponding static lead-out piece being led out from the mounting base 30. This method of independently slotting the moving contact assembly helps reduce the slot depth on the side wall of the mounting base 30, thereby maintaining the structural strength of the side wall of the mounting base 30. Specifically, since the two sets of moving contact assemblies 13 are arranged in layers, the stationary lead-out assembly is also arranged in two layers in the first direction. Therefore, independent slots can be made at the two positions corresponding to the stationary lead-out assembly of the mounting base 30, thus avoiding excessively deep slots that would cause at least one side of the side wall of the mounting base 30 to become an isolated and unsupported structure. This, in turn, avoids affecting the overall structural strength of the mounting base 30 and improves the reliability of the relay.

[0130] In conventional technology, the moving contact unit and the lead-out unit are usually installed inside the relay housing. The relay housing has an opening, and the first and second stationary lead-out components of the lead-out unit are usually inserted into the relay housing through the opening and pass through the side wall of the relay housing. If all the moving contact components and lead-out units are inserted into the relay housing through the same opening, then a groove with a relatively large depth needs to be made on the relay housing to allow all the first and second stationary lead-out components to pass through. This significantly weakens the strength of the side wall of the relay housing, making the side wall of the relay housing prone to bending, and may affect the contact assembly accuracy as well as the overall structural strength and stability of the relay.

[0131] The first stationary lead assembly 11 and the second stationary lead assembly 12 each include multiple stationary leads arranged along a first direction. Each stationary lead in the first stationary lead assembly 11 and each stationary lead in the second stationary lead assembly 12 corresponds one-to-one with each moving contact assembly 13. Each moving contact assembly 13 can connect or disconnect the electrical path between the corresponding two stationary leads. In this embodiment, by configuring the first stationary lead assembly 11 and the second stationary lead assembly 12 to include multiple stationary leads arranged along the first direction, the current input or current output needs of the corresponding moving contact assembly 13 are accommodated. Moreover, the multiple stationary leads in the same stationary lead assembly are arranged along the first direction, thereby maintaining consistency with the arrangement direction of the multiple moving contact assemblies 13, which helps to improve the space utilization of the relay structure and reduce its size.

[0132] In some embodiments proposed in this application, since there are two moving contact components, two independent chambers are provided for the relay housing to accommodate the two sets of moving contact components and to provide a foundation for the lead-out units. Each chamber can be provided with a groove for the lead-out units to pass through, so that the groove depth on the side wall of the relay housing is reduced to half or more of the original depth, thereby effectively improving the bending strength of the side wall of the relay housing. In addition, it is also beneficial to fix and support the two sets of moving contact components separately by configuring more sufficient mounting structures in the independent chambers (such as the first mounting chamber 301 and the second mounting chamber 302), thereby improving the stability of the moving contact components and achieving physical isolation and independent stress bearing.

[0133] The following is combined with Figure 2 The structure of the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 in the relay shown will be described. (In conjunction with...) Figure 2 As shown, the first static lead-out assembly 11 includes two static lead-out members arranged along the first direction, namely a first static lead-out piece 111 and a third static lead-out piece 113. The second static lead-out assembly 12 includes two static lead-out members arranged along the first direction, namely a second static lead-out piece 112 and a fourth static lead-out piece 114.

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

[0135] It should be noted that the first stationary lead-out piece 111, the third stationary lead-out piece 113, the second stationary lead-out piece 112, and the fourth stationary lead-out piece 114 can electrically connect the corresponding moving contact assembly 13 to the circuit outside the relay. Since the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 are both divided into two groups, this further provides a basis for setting independent chambers on the relay housing to improve the bending strength of the relay housing sidewalls.

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

[0137] Furthermore, the fixed ends 13a1 of the two moving contacts 13a of the first moving contact assembly 131 are respectively fixed to the first stationary lead-out piece 111 and the second stationary lead-out piece 112. The fixed ends 13a1 of the two moving contacts 13a of the second moving contact assembly 132 are respectively fixed to the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114. All the swing ends 13a2 can be driven by the electromagnetic system 20 to contact or separate from the fixed end 13a1 of the other moving contact 13a located in the same moving contact assembly 13. Thus, in the first switching state, the two moving contacts 13a of the first moving contact assembly 131 separate from each other, thereby breaking the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the two moving contacts 13a of the second moving contact assembly 132 separate from each other, thereby breaking the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114. Accordingly, in the second switching state, the two moving contacts 13a of the first moving contact assembly 131 are in contact with each other, thereby opening the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112. Similarly, the two moving contacts 13a of the second moving contact assembly 132 are in contact with each other, thereby opening the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114. Thus, switching between the first and second switching states can be achieved by using the first moving contact assembly 131 and the second moving contact assembly 132 to either open or close the electrical path between the first stationary lead-out piece 11 and the second stationary lead-out piece 12.

[0138] It should be noted that each movable contact assembly 13 is not limited to including two movable contacts 13a. In some embodiments, the movable contact assembly 13 may also have only one movable contact 13a. Taking the first movable contact assembly 131 as an example, the first movable contact assembly 131 includes one movable contact 13a, one end of which is fixed to one of the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the other end is movable to contact or separate from the other of the first stationary lead-out piece 111 and the second stationary lead-out piece 112, thereby enabling the first movable contact assembly 131 to disconnect or connect the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112. Correspondingly, the second movable contact assembly 132 may also adopt a similar arrangement to the first movable contact assembly 131 to disconnect or connect the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114, which will not be discussed here.

[0139] Understandably, when the movable contact unit 10b includes multiple sets of movable contact components 13, for example, when the number of movable contact components 13 is two or more, regardless of whether the number of movable contacts 13a in the movable contact components 13 is one or two, the movable contact unit 10b can be configured to switch between a first switch state and a second switch state. Taking the first movable contact component 131 and the second movable contact component 132 as examples, in the first switch state, the first movable contact component 131 disconnects the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the second movable contact component 132 disconnects the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114; in the second switch state, the first movable contact component 131 connects the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the second movable contact component 132 connects the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114.

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

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

[0142] like Figure 8As shown, the first groove C1 and the second groove C2 are located in the third direction of the first mounting cavity 301 (e.g., Figure 8 The first mounting holes are located on opposite side walls of the second mounting cavity 302 in the Z direction, and both extend along the first direction to the end of the main body 31 where the first mounting opening is provided (i.e., the end where the first end face 30a of the mounting base 30 is located). The third groove C3 and the fourth groove C4 are located on opposite side walls of the second mounting cavity 302 in the Z direction, and both extend along the first direction to the end of the main body 31 where the second mounting opening is provided (i.e., the end where the second end face 30b of the mounting base 30 is located).

[0143] The first direction, the second direction, and the third direction intersect each other. In some implementations, the first direction, the second direction, and the third direction are perpendicular to each other. In this case, the coordinate system XYZ established based on these three directions is a rectangular coordinate system.

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

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

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

[0147] It should be noted that in embodiments where each moving contact assembly 13 includes two moving contacts 13a, taking the first moving contact assembly 131 including two first moving contacts 1311 and the second moving contact assembly 132 including two second moving contacts 1321 as an example, the first stationary lead-out piece 111 is connected to one of the first moving contacts 1311, and the second stationary lead-out piece 112 is connected to the other first moving contact 1311. The third stationary lead-out piece 113 is connected to one of the second moving contacts 1321, and the fourth stationary lead-out piece 114 is connected to the other second moving contact 1321. With this structural arrangement, the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 can be conveniently used to meet the need for electrical connection between the corresponding moving contact 13a and the external circuit of the relay.

[0148] Furthermore, by configuring the first stationary lead-out assembly 11 to include a first stationary lead-out piece 111 and a third stationary lead-out piece 113 arranged along a first direction, the first stationary lead-out piece 111 and the third stationary lead-out piece 113 can be independently installed in their respective first grooves C1 and third grooves C3. Compared to the method where the first stationary lead-out piece 111 and the third stationary lead-out piece 113 are integrally configured, requiring a deeper groove to be made in the mounting base 30, this embodiment maintains the structural strength of the mounting base 30.

[0149] Accordingly, by configuring the second stationary lead-out assembly 12 to include a second stationary lead-out piece 112 and a fourth stationary lead-out piece 114 arranged along the first direction, the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 can be independently installed in the corresponding second groove C2 and fourth groove C4. Compared to the situation where the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 are integrally set, which requires a deeper groove to be made in the mounting base 30, this embodiment can maintain the structural strength of the mounting base 30.

[0150] In the above embodiment, corresponding grooves are opened at both ends of the base body 31 to set the stationary lead-out pieces. In this way, the depth of the groove in the first direction only needs to be adapted to the assembly requirements of the corresponding stationary lead-out pieces, thereby making the groove depth in the first direction as small as possible to maintain the structural strength of the base body 31.

[0151] For ease of understanding, the effect of the relay structure of this application will be further explained below in conjunction with the installation structure of the contact system 10 in related technologies, but this does not mean that the effect of the relay structure of this application is limited to this.

[0152] For example, in related technologies, in order to meet the need to reduce contact resistance, the moving contact 13a is usually configured to include multiple parallel branches. For example, each moving contact 13a includes six parallel branches, or two moving contacts 13a arranged along the first direction each include three parallel branches, for a total of six parallel branches. In related technologies, the six parallel branches realize current output or input through the same stationary lead piece. Assuming that the stationary lead piece has a dimension of d in the first direction to accommodate current flow, in related technologies, if the relay mounting base 30 is provided with only one mounting cavity for the contact system, then the relay mounting base 30 needs to open a groove with a depth of not less than d in the cavity wall of the mounting cavity to accommodate the installation needs of the stationary lead piece.

[0153] In the embodiments of this application, the first moving contact assembly 131 and the second moving contact assembly 132 are arranged along a first direction and connected in parallel with each other. The first stationary lead-out piece 111 and the third stationary lead-out piece 113 are both connected to one load terminal in the circuit where the relay is used, and the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114 are both connected to another load terminal in the circuit where the relay is used. Based on this, in the relay of this embodiment, if six parallel branches are implemented using the first moving contact 1311 and the second moving contact 1321, the first stationary lead-out piece 111 connected to the first moving contact 1311 only needs to accommodate the current transmission requirements of the first moving contact 1311, and the third stationary lead-out piece 113 connected to the second moving contact 1321 only needs to accommodate the current transmission requirements of the second moving contact 1321. Thus, the first static lead 111 and the third static lead 113 each bear a portion of the current in the six parallel branches. Compared with the related technologies that require the same static lead to bear the current in the six parallel branches, the relay of this application can have the size of the first static lead 111 less than d, and the size of the third static lead 113 less than d.

[0154] Ideally, if the current-conducting capacity of each parallel branch in this application is consistent with that of each parallel branch in related technologies, then the sum of the currents flowing through the first stationary lead 111 and the third stationary lead 113 is consistent with the current flowing through a single stationary lead in related technologies. Correspondingly, in the first direction, the sum of the dimensions of the first stationary lead 111 and the third stationary lead 113 will also be consistent with the dimension d of a single stationary lead in related technologies. Thus, while maintaining contact resistance and current-carrying performance consistent with relays in related technologies, the dimensions of both the first stationary lead 111 and the third stationary lead 113 are less than d. Understandably, if the current flowing through the first moving contact 1311 and the second moving contact 1321 is the same, the current that the first stationary lead-out piece 111 and the third stationary lead-out piece 113 need to share is also the same. In this case, the dimensions of the first stationary lead-out piece 111 and the third stationary lead-out piece 113 in the first direction can be equal, that is, in the first direction, the dimensions of the first stationary lead-out piece 111 and the third stationary lead-out piece 113 are both d / 2. Thus, the depth of the first groove C1 only needs to be d / 2 to meet the assembly requirements of the first stationary lead-out piece 111; correspondingly, the depth of the third groove C3 only needs to be d / 2 to meet the assembly requirements of the third stationary lead-out piece 113. Therefore, the relay of this application, by configuring the moving contact unit 10b as a plurality of moving contact components 13 arranged along the first direction, can reduce the size requirements of each stationary lead in the lead-out unit 10a in the first direction, thereby reducing the slot depth on the mounting base 30 and avoiding the side wall (e.g., for mounting one of the stationary leads) from being too deep due to excessive slot depth. Figure 5 At least one side of the outer wall surface 30d of the mounting base 30 will become an isolated and unsupported structure. Therefore, the embodiments of this application are beneficial to maintaining the overall structural strength of the mounting base 30 and improving the reliability of the relay.

[0155] It should be noted that the dimensions of the stationary lead in the first direction mentioned above are all designed based on the premise that the thickness and conductivity are consistent, and the stationary lead needs to meet its current transmission performance requirements. Furthermore, considering that the stationary lead is a conductor, the location limiting its current conduction performance is its minimum cross-sectional area. The impact of the slot depth on the mounting base 30 mainly concerns the position corresponding to the inner wall of the base body 31. Therefore, the dimensions of the stationary lead in the first direction mentioned above refer to the position with the minimum cross-sectional area of ​​the stationary lead corresponding to the inner wall of the base body 31. Whether the dimensions of other parts of the stationary lead are set larger or the shape of the stationary lead is not limited here.

[0156] For ease of understanding, the depth of each groove on the inner wall of the seat body 31 is referred to as the "groove depth". In other words, the depth of the groove where each groove connects to the corresponding mounting cavity is referred to as the "groove depth".

[0157] For example, combining Figure 8 and Figure 9 As shown, the depth of the third groove C3 at the inner wall of the seat body 31 is d / 2, therefore the groove depth of the third groove C3 is d / 2. Here, the groove depth of the third groove C3 refers only to the depth at the inner wall of the seat body 31, and does not mean that the depth of the third groove C3 at other locations on the seat body 31 is d / 2. Figure 8 and Figure 9 As shown, the dimension of the third groove C3 extending to the outer wall surface 30d of the seat body 31 (i.e., the position where the third static lead-out piece 113 protrudes from the outer wall of the seat body 31) can be D, where D is greater than or equal to d / 2.

[0158] Combination Figure 8 and Figure 9 As shown, the groove depth of the first groove C1, the second groove C2 and the fourth groove C4 only needs to meet the installation requirements of the corresponding static lead-out pieces, and will not be elaborated on here.

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

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

[0161] In some embodiments, the groove depth of the first groove C1 is less than or equal to 1 / 3 of the depth of the first mounting cavity 301. By setting the first groove C1, the need for the first stationary lead-out piece 111 to be led out from the mounting base 30 is met. At the same time, by controlling the groove depth of the first groove C1, the depth of the first groove C1 is made shallow, which helps to maintain the structural strength of the mounting base 30, making the mounting base 30 less prone to deformation, thereby enhancing the reliability of the relay.

[0162] The portion of the first stationary lead 111 that mates with the first groove C1 has a smaller dimension in the first direction than the other portions of the first stationary lead 111 (such as the connecting terminals of the first stationary lead 111, or the portion of the first stationary lead 111 that is connected to the moving contact 13a) in the first direction. In this way, on the one hand, the first groove C1 is used to meet the assembly requirements of part of the structure of the first stationary lead 111, and on the other hand, the larger dimension of the other portions of the first stationary lead 111 in the first direction helps to ensure the current-carrying area and reduce resistance.

[0163] Accordingly, the groove depth of the second groove C2 is less than or equal to 1 / 3 of the depth of the first mounting cavity 301. The groove depth of the third groove C3 is less than or equal to 1 / 3 of the depth of the second mounting cavity 302. The groove depth of the fourth groove C4 is less than or equal to 1 / 3 of the depth of the second mounting cavity 301. By controlling the groove depth of each groove, it is beneficial to maintain the structural strength of the mounting base 30, making the mounting base 30 less prone to deformation, thereby enhancing the reliability of the relay.

[0164] Similar to the first stationary lead 111, the dimensions of the parts of other stationary leads such as the second stationary lead 112, the third stationary lead 113, and the fourth stationary lead 114 that mate with the corresponding grooves are smaller in the first direction than the dimensions of other parts of the stationary lead in the first direction. This allows the grooves with reduced groove depth to meet the assembly requirements of the corresponding stationary leads. At the same time, the larger dimensions of other parts of each stationary lead in the first direction helps to ensure the current-carrying area and reduce resistance.

[0165] Combination Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 all have bent portions. The first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 extend connecting terminals along the second direction towards the side where the outer wall surface 30d of the mounting base 30 is located, through their respective bent portions.

[0166] For ease of description, the bent portions in the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 are respectively referred to as "first bent portion 111a", "second bent portion 112a", "third bent portion 113a", and "fourth bent portion 114a"; and the connecting terminals therein are respectively referred to as "first connecting terminal 111b", "second connecting terminal 112b", "third connecting terminal 113b", and "fourth connecting terminal 114b".

[0167] In the first stationary lead-out piece 111, the first bending portion 111a is provided, causing the first connecting terminal 111b to extend towards the side of the outer wall surface 30d of the mounting base 30. In the second stationary lead-out piece 112, the second bending portion 112a is provided, causing the second connecting terminal 112b to extend towards the side of the outer wall surface 30d of the mounting base 30. In the third stationary lead-out piece 113, the third bending portion 113a is provided, causing the third connecting terminal 113b to extend towards the side of the outer wall surface 30d of the mounting base 30. In the fourth stationary lead-out piece 114, the fourth bending portion 114a is provided, causing the fourth connecting terminal 114b to extend towards the side of the outer wall surface 30d of the mounting base 30.

[0168] All connection terminals are led out from the same side of the mounting base 30. Specifically, all connection terminals are arranged in the same plane that is parallel to both the first direction and the third direction, thereby making the arrangement of the stationary leads in the relay compact, reducing the size occupied by the relay along the third direction or the first direction, which is conducive to the miniaturization of the relay and makes it easier to adapt to limited installation space, such as the narrow battery compartment space in a car; in addition, it is also conducive to supporting the compact side-by-side installation of multiple relays.

[0169] Furthermore, all connection terminals are located on the outer side of the outer wall surface 30d of the mounting base 30, which is closer to the contact system 10 in the second direction. This reduces the distance between each connection terminal and the moving contact unit 10b in the contact system 10, thereby reducing the amount of conductive material required for each stationary lead-out piece to extend the connection terminal outside the mounting base 30, and consequently lowering costs. The conductive material here includes, but is not limited to, copper or copper alloys.

[0170] Combination Figure 5 , Figure 8 and Figure 9 As shown, the mounting base 30 also has shielding walls 30e on its two side walls facing the third direction, with each shielding wall 30e correspondingly shielding each bend. In this way, while maintaining the connection between the relay and the external device at the connection terminal, the shielding walls 30e can be used to shield the corresponding bends, thereby improving the overall aesthetic appearance of the relay.

[0171] In other possible embodiments, the first static lead-out piece 111 and the third static lead-out piece 113 may be integrated, and the second static lead-out piece 112 and the fourth static lead-out piece 114 may also be integrated; no limitation is made here.

[0172] Combination Figures 5 to 7As shown, the mounting base 30 includes a base body 31 and a first mounting plate 32. The first mounting plate 32 is connected to the inner wall of the base body 31. The first mounting plate 32 divides the inner cavity of the base body 31 into a first mounting cavity 301 and a second mounting cavity 302 along a first direction. That is, in the first direction, the first mounting cavity 301 is located on one side of the first mounting plate 32, and the second mounting cavity 302 is located on the other side of the first mounting plate 32. Thus, the placement of the first mounting plate 32 does not interfere with the installation of the first moving contact assembly 131 and the second moving contact assembly 132, maintaining the ease of installation of the first moving contact assembly 131 and the second moving contact assembly 132 in the mounting base 30. At the same time, since the first mounting plate 32 is connected to the inner wall of the base body 31, the first mounting plate 32 can provide structural reinforcement to the base body 31, making the base body 31 less prone to deformation. Consequently, even if the stationary contact 13b of the first moving contact assembly 131 and the second moving contact assembly 132 is impacted by the moving contact 13c during contact action, causing an impact force on the base body 31, the base body 31 can reduce the probability of deformation or damage under the reinforcement effect of the first mounting plate 32, making the relay less prone to damage and extending the service life of the relay.

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

[0174] Combination Figure 8 and Figure 9 As shown, the mounting base 30 also includes a second mounting plate 33, which is connected to the first mounting plate 32. The second mounting plate 33 divides the space enclosed by the base body 31 into a third mounting cavity 303. One end of the second mounting plate 33 in the first direction forms a third mounting opening by enclosing a portion of the side wall of the base body 31.

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

[0176] Understandably, in embodiments where the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22, both the coil assembly 21 and the armature assembly 22 can be mounted from the third mounting port along the first direction to the third mounting cavity 303.

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

[0178] Furthermore, combined Figure 8 and Figure 9 As shown, the base body 31 includes a side wall portion 311 and a bottom wall portion 312. The bottom wall portion 312 is connected to the side wall portion 311 and the second mounting plate 33. The second mounting plate 33 and a portion of the side wall portion 311 together form a third mounting cavity 303. The other portion of the side wall portion 311, the first mounting plate 32, and the second mounting plate 33 together form a first mounting cavity 301 and a second mounting cavity 302. The bottom wall portion 312 is parallel to the first mounting plate 32. One end of the electromagnetic system 20 is connected to the bottom wall portion 312, thereby improving the installation stability of the electromagnetic system 20.

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

[0180] In some embodiments, the armature assembly 22 is connected to a rotating shaft 22a, one end of which is connected to the bottom wall portion 312. The armature assembly 22 can rotate relative to the bottom wall portion 312 about the center line of the rotating shaft 22a. In this embodiment, the rotation of the armature assembly 22 about the center line of the rotating shaft 22a relative to the bottom wall portion 312 provides power for the contact or disconnection of the first moving contact assembly 131 and the second moving contact assembly 132, thereby switching the moving contact unit 10b between a first switch state and a second switch state. The axis of the rotating shaft 22a is parallel to the first direction. Therefore, the armature assembly 22 can be rotatably connected to the bottom wall portion 312 by being assembled into the third mounting cavity 303 of the mounting base 30 along the first direction. Since the first moving contact assembly 131 is assembled into the first mounting cavity 301 of the mounting base 30 along the first direction, and the second moving contact assembly 132 is assembled into the second mounting cavity 302 of the mounting base 30 along the first direction, in the relay of this application, the armature assembly 22, the first moving contact assembly 131, and the second moving contact assembly 132 can be assembled into the mounting base 30 in the same dimension (i.e., the first direction), making the assembly operation convenient. Moreover, this structural layout helps to reduce the waste of assembly space, so as to achieve the miniaturization of the relay. Furthermore, since the electromagnetic system 20 and the moving contact unit 10b 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.

[0181] It should be noted that the second mounting plate 33 can also serve a supporting function, including but not limited to the second mounting plate 33 directly providing support. In some embodiments, the second mounting plate 33 can indirectly serve a supporting function. For example, in combination with... Figure 1 , Figure 2 and Figure 9 As shown, one end of the rotating shaft 22a is connected to the bottom wall portion 312, and the other end is connected to the mounting bracket 22b. Figure 5 and Figure 6 As shown, when the mounting bracket 22b is installed on the base body 31, the second mounting plate 33 cooperates with the mounting bracket 22b. The second mounting plate 33 can fix the mounting bracket 22b, thereby reducing the probability of the mounting bracket 22b becoming loose relative to the base body 31. Therefore, in this embodiment, the second mounting plate 33 indirectly supports the rotating shaft 22a through the mounting bracket 22b, so that the armature assembly 22 can rotate stably around the rotating shaft 22a, thereby improving the rotational stability of the armature assembly 22.

[0182] In some embodiments, the extension direction of the second mounting plate 33 is parallel to the first direction. Thus, for the first moving contact assembly 131 and the second moving contact assembly 132 arranged along the first direction, the second mounting plate 33 is less likely to interfere with the assembly of the first moving contact assembly 131 and the second moving contact assembly 132, allowing the first moving contact assembly 131 and the second moving contact assembly 132 to be compactly mounted in the first mounting cavity 301 and the second mounting cavity 302, thereby facilitating the miniaturization of the relay.

[0183] It should be noted that the second mounting plate 33 can be used to position some of the stationary leads in the lead-out unit 10a, thereby improving the installation stability of the stationary leads in the mounting base 30. For example, the second mounting plate 33 can adapt to the installation positioning needs of stationary leads close to the electromagnetic system 20, thereby improving the installation stability of the stationary leads.

[0184] In some implementations, combined Figure 5 and Figure 6 As shown, a first positioning buckle 331 is provided on the second mounting plate 33. Parts of the structure of the first stationary lead-out piece 111 and part of the structure of the third stationary lead-out piece 113 cooperate with the first positioning buckle 331. Thus, the first positioning buckle 331 is used to position the first stationary lead-out piece 111 and the third stationary lead-out piece 113 and limit them along the second direction, making the installation of the first stationary lead-out piece 111 and the third stationary lead-out piece 113 on the mounting base 30 more stable and less prone to loosening. This improves the stability of the stationary contact 13b on the first stationary lead-out piece 111 and the third stationary lead-out piece 113 and stabilizes the performance of the relay.

[0185] In some embodiments, a second positioning buckle 3011 is provided on the inner wall of the first mounting cavity 301 opposite to the second mounting plate 33, and a portion of the structure of the second stationary lead-out piece 112 cooperates with the second positioning buckle 3011. Thus, the second positioning buckle 3011 positions and limits the second stationary lead-out piece 112 along a second direction, making the installation of the second stationary lead-out piece 112 on the mounting base 30 more stable and less prone to loosening. This improves the stability of the stationary contact 13b on the second stationary lead-out piece 112 and enhances the relay's performance.

[0186] Combination Figure 9 As shown, a third positioning buckle 3021 is provided on the inner wall of the second mounting cavity 302 opposite to the second mounting plate 33, and part of the structure of the fourth stationary lead-out piece 114 cooperates with the third positioning buckle 3021. Thus, the third positioning buckle 3021 positions and limits the fourth stationary lead-out piece 114 along the second direction, making the installation of the fourth stationary lead-out piece 114 on the mounting base 30 more stable and less prone to loosening, thereby improving the stability of the stationary contact 13b on the fourth stationary lead-out piece 114 and stabilizing the performance of the relay.

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

[0188] It should be noted that, since the multiple moving contact components 13 of the contact system 10 can connect or disconnect the first stationary lead-out component 11 and the second stationary lead-out component 12 under the drive of the armature component 22, and the pushing mechanism 40 can play a transmission role between the armature component 22 and the contact system 10, the pushing mechanism 40 can push the first moving contact 1311 to the position where the two first moving contact components 1311 of each first moving contact component 131 are in contact with each other or disconnected from each other; correspondingly, the pushing mechanism 40 can push the second moving contact 1321 to the position where the two second moving contact components 1321 of each second moving contact component 132 are in contact with each other or disconnected from each other.

[0189] Combination Figure 2 , Figure 6 and Figure 7 As shown, the pushing mechanism 40 includes a first set of pushing cards 41 and a second set of pushing cards 42. The first set of pushing cards 41 includes two first pushing cards 411, and the second set of pushing cards 42 includes two second pushing cards 421. The two first pushing cards 411 are respectively connected to two first moving contacts 1311, and the two second pushing cards 421 are respectively connected to two second moving contacts 1321. With this structural arrangement, the pushing mechanism 40 utilizes the first set of pushing cards 41 and the second set of pushing cards 42, which are separately disposed within the mounting base 30 in the first direction. This avoids the problem of excessively large pushing cards in the first direction, which could easily deform or break, when multiple sets of moving contact components 13 need to be driven simultaneously in the first direction. This improves the reliability of the pushing mechanism 40 in driving such a large contact system 10.

[0190] The armature assembly 22 includes a first connecting arm 221 and a second connecting arm 222. The armature assembly 22 is rotatable about a pivot 22a parallel to a first direction, such that the driving ends of the first connecting arm 221 and the second connecting arm 222 move in opposite directions. Two first push clips 411 are correspondingly connected to the first connecting arm 221 and the second connecting arm 222. Two second push clips 421 are correspondingly connected to the first connecting arm 221 and the second connecting arm 222. The ends of the two first push clips 411 away from the first moving contact assembly 131 are respectively connected to the driving ends of the first connecting arm 221 and the second connecting arm 222, and the ends of the two second push clips 421 away from the second moving contact assembly 132 are respectively connected to the driving ends of the first connecting arm 221 and the second connecting arm 222.

[0191] Since the driving ends of the first connecting arm 221 and the second connecting arm 222 move in opposite directions, when the first push card 411 and the second push card 421 connected to the first connecting arm 221 move together in one direction along the second direction, the first push card 411 and the second push card 421 connected to the second connecting arm 222 move together in opposite directions along the second direction, so that when the corresponding first moving contacts 1311 are in contact with each other, the corresponding second moving contacts 1321 are in contact with each other; correspondingly, when the corresponding first moving contacts 1311 are disconnected from each other, the corresponding second moving contacts 1321 are disconnected from each other.

[0192] For ease of understanding, the following description of the arrangement of the first moving contact component 131 on the seat body 31 is based on the implementation of the two first moving contact elements 1311 of the first moving contact component 131 being in contact with or disconnected from each other, but it is not limited to this.

[0193] Combination Figure 3 and Figure 6 As shown, when the armature assembly 22 rotates about the pivot 22a parallel to the first direction, the pushing mechanism 40 can push the swing end 13a2 of the first moving contact 1311 under the drive of the armature assembly 22, so that the swing end 13a2 can contact or separate from the adjacent first moving contact 1311 along the second direction.

[0194] In the first movable contact assembly 131, the swing end 13a2 of any one of the first movable contact 1311 corresponds to the fixed end 13a1 of the other first movable contact 1311, such that the stationary contact 13b and the movable contact 13c of one first movable contact 1311 are respectively opposite to the movable contact 13c and the stationary contact 13b of the other first movable contact 1311. The swing end 13a2 of one first movable contact 1311 is connected to one first push card 411, and the swing end 13a2 of the other first movable contact 1311 is connected to the other first push card 411. Thus, when the two first push cards 411 move in opposite directions, the swing ends 13a2 of the two first movable contacts 1311 move in opposite directions under the drive of the corresponding two first push cards 411, causing the two sets of corresponding movable contacts 13c and stationary contacts 13b of the two first movable contacts 1311 to come into contact with or separate from each other.

[0195] Accordingly, in the two second moving contacts 1321 of the second moving contact assembly 132, the swing end 13a2 of any one second moving contact 1321 corresponds to the fixed end 13a1 of the other second moving contact 1321, such that the stationary contact 13b and the moving contact 13c of one second moving contact 1321 are respectively opposite to the moving contact 13c and the stationary contact 13b of the other second moving contact 1321. The swing end 13a2 of one second moving contact 1321 is connected to one second push card 421, and the swing end 13a2 of the other second moving contact 1321 is connected to the other second push card 421. Thus, when the two second push cards 421 move in opposite directions, the swing ends 13a2 of the two second moving contacts 1321 move in opposite directions under the drive of the corresponding two second push cards 421, causing the two sets of corresponding moving contacts 13c and stationary contacts 13b of the two second moving contacts 1321 to come into contact with or separate from each other.

[0196] In some embodiments, the armature assembly 22 is located between the coil assembly 21 and the contact system 10 along the second direction. This allows the armature assembly 22 to be closer to the contact system 10, which helps to reduce the length of the lever arm that drives the contact system 10, resulting in a compact structure, miniaturization of the relay, and also helps to reduce the length of the push member (such as the first push card 411 and the second push card 421 in this embodiment) connected between the armature assembly 22 and the contact system 10 along the second direction, avoiding deformation and breakage of the push member. In addition, it also avoids the need for the push member to avoid the coil assembly 21, reducing structural complexity.

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

[0198] In this embodiment, since the first connecting arm 221 and the second connecting arm 222 are located on the side of the armature assembly 22 facing away from the coil assembly 21 along the second direction, the driving ends of the first connecting arm 221 and the second connecting arm 222 are short in the second direction from the contact system 10. The first set of push cards 41 and the second set of push cards 42 serve as a transmission structure that drives the swing end 13a2 of the corresponding moving contact 13a under the drive of the armature assembly 22. The shorter the distance from the driving ends of the first connecting arm 221 and the second connecting arm 222 to the contact system 10 in the second direction, the shorter the extension length of the two first push cards 411 in the first set of push cards 41 and the two second push cards 421 in the second set of push cards 42 in the second direction. Consequently, deformation is less likely to occur when pushing the moving contact 13a to move, which helps to maintain the contact reliability between the moving contacts 13a and thus improves the reliability of the relay.

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

[0200] In some embodiments, since there may be multiple sets of movable contact components 13, the installation method of multiple sets of movable contact components 13 in the mounting base 30 may be that some movable contact components 13 are installed in the first mounting cavity 301, and other movable contact components 13 are installed in the second mounting cavity 301.

[0201] For example, in an embodiment where the mounting base 30 includes a base body 31 and a first mounting plate 32, the first mounting plate 32 divides the inner cavity of the base body 31 into a first mounting cavity 301 and a second mounting cavity 302 along a first direction. At least one set of moving contact components 13 (such as the first moving contact component 131) can be installed into the first mounting cavity 301 from the first mounting port, and at least another set of moving contact components 13 (such as the second moving contact component 132) can be installed into the second mounting cavity 302 from the second mounting port. This allows the sidewall of the mounting base to have grooves respectively corresponding to the positions of the first and second moving contact components to accommodate the lead-out requirements of the electrical leads of the first and second moving contact components, without needing to have an entire groove along the first direction to accommodate the lead-out requirements of the electrical leads of the first and second moving contact components. Consequently, the technical solution of this application reduces the groove depth, thereby reducing the probability of deformation of the mounting base and improving the reliability of the relay product.

[0202] In the embodiment where the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22, the armature assembly 22 is used to move based on the polarity change of the coil assembly 21, and drives each moving contact assembly 13 to move synchronously via each set of push cards. The electromagnetic system 20 can be installed into the base body 31 from one end of the mounting base 30 along the first direction, that is, the electromagnetic system 20 and the moving contact unit 10b can be installed in the same direction, so that both the electromagnetic system 20 and the moving contact unit 10b can be easily installed into the mounting base 30. This structure is simple, easy to install, and facilitates assembly with the help of automated equipment, resulting in high installation efficiency.

[0203] Combination Figures 10 to 12 As shown, in some embodiments, the contact system 10 includes at least two moving contact units 10b and at least two lead-out units 10a, with each lead-out unit 10a corresponding to one of the moving contact units 10b. Each moving contact unit 10b is arranged along a second direction, perpendicular to the first direction. When each moving contact unit 10b is in a first switching state, it is electrically connected to its adjacent moving contact unit 10b, such that in the two lead-out units 10a corresponding to the two adjacent moving contact units 10b, the first stationary lead-out component 11 of one lead-out unit 10a and the second stationary lead-out component 12 of the other lead-out unit 10a are connected in series (for example, the first stationary lead-out piece 111 and the third stationary lead-out piece 113 of one lead-out unit 10a are connected in series with the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 of the other lead-out unit 10a). When each moving contact unit 10b is in a second switching state, each lead-out unit 10a is disconnected from each other. This enables the contact system 10 to switch between series and parallel functions to adapt to certain special application scenarios, such as in the battery management system of automobiles to optimize the charging and discharging functions of the battery pack.

[0204] The first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 of the lead-out unit 10a are respectively arranged on both sides of the corresponding moving contact element 10b along a third direction. In this way, the space in the third direction is fully utilized to arrange the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12, so as to reduce the space occupied by the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 in the first direction and the second direction, thereby improving the compactness of the arrangement of the components (e.g., moving contact 13a) in the moving contact unit, which is conducive to the miniaturization of the relay.

[0205] When the two moving contacts 13a in each moving contact unit 10b are separated from each other, the adjacent moving contacts 13a in at least two moving contact units 10b are connected in parallel, and a stationary lead-out piece in one lead-out unit 10a is electrically connected to a stationary lead-out piece in another lead-out unit 10a, thereby enabling the contact system 10 to switch between series and parallel functions.

[0206] For ease of understanding, the following example uses a contact system 10 that includes two moving contact units 10b and two lead-out units 10a.

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

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

[0209] Regarding the structure of the first movable contact unit 101 and the second movable contact unit 102, please refer to the description of movable contact unit 10b above; correspondingly, the structure of the first lead-out unit 103 and the second lead-out unit 104 can be referred to the description of lead-out unit 10a above, and will not be repeated here. For example, the first movable contact unit 101 and the second movable contact unit 102 each include the aforementioned first static lead-out component 11 and second static lead-out component 12.

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

[0211] For ease of description, combined with Figures 10 to 12 As shown, the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 in the first lead-out unit 10a are represented by "static lead-out piece 1 P1", "static lead-out piece 2 P2", "static lead-out piece 3 P3", and "static lead-out piece 4 P4" respectively; the second static lead-out unit 10a is represented by "static lead-out piece 5 P5", "static lead-out piece 6 P6", "static lead-out piece 7 P7", and "static lead-out piece 8 P8" respectively. The corresponding connection terminals of each static lead-out piece are sequentially named "terminal 1 D1", "terminal 2 D2", "terminal 3 D3", "terminal 4 D4", "terminal 5 D5", "terminal 6 D6", "terminal 7 D7", and "terminal 8 D8".

[0212] Combination Figure 12 As shown, in some embodiments, the movable contact 13a of the first movable contact unit 101, which is closer to the second movable contact unit 102, is provided with stationary contacts 13b and movable contacts 13c on both sides in the second direction. The fixed end 13a1 of the movable contact 13a of the second movable contact unit 102, which is closer to the first movable contact unit 101, is provided with stationary contacts 13b on both sides in the second direction. Correspondingly, the swing end 13a2 of the movable contact 13a is provided with movable contacts 13c on both sides in the second direction.

[0213] The moving contact 13a of the second moving contact unit 102, which is closer to the first moving contact unit 101, has stationary contacts 13b and moving contacts 13c on both sides in the second direction. The fixed end 13a1 of the moving contact 13a of the second moving contact unit 102, which is closer to the first moving contact unit 101, has stationary contacts 13b on both sides in the second direction. Correspondingly, the swing end 13a2 of the moving contact 13a has moving contacts 13c on both sides in the second direction. When the two moving contacts 13a of the first moving contact unit 101 and the two moving contacts 13a of the second moving contact unit 102 are separated, the adjacent moving contacts 13a of the first and second moving contact units 101 and 102 are in contact through the corresponding moving contacts 13c and stationary contacts 13b, thereby achieving an electrical connection between the first and second moving contact units 101 and 102, so that each lead-out unit 10a has a stationary lead-out component connected in series.

[0214] In the above embodiments, not only can two moving contacts 13a in the same moving contact unit 10b be brought into contact with each other, but two moving contacts 13a in different moving contact units 10b can also be brought into contact with each other. Correspondingly, two moving contacts 13a in the same moving contact unit 10b can be brought into contact with each other, and two moving contacts 13a in different moving contact units 10b can also be brought into contact with each other. This allows the relay to achieve series-parallel switching using the first moving contact unit 101 and the second moving contact unit 102.

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

[0216] Combination Figure 10 and Figure 11 As shown, in the first lead-out unit 103 and the second lead-out unit 104, the connection terminals (i.e., the first connection terminal 111b and the third connection terminal 113b) of one of the first stationary lead-out pieces 111 and 113 are arranged along a first direction between the connection terminals of the first stationary lead-out piece 111 and the third stationary lead-out piece 113 of the other, for example, as Figure 10As shown, terminal 5 D5 and terminal 7 D7 are located between terminal 1 D1 and terminal 3 D3. Alternatively, in other embodiments, the positions of terminal 1 D1 and terminal 5 D5 can be interchanged, and the positions of terminal 3 D3 and terminal 7 D7 can be interchanged, so that terminal 1 D1 and terminal 3 D3 are located between terminal 5 D5 and terminal 7 D7. Correspondingly, in the first lead-out unit 103 and the second lead-out unit 104, the connection terminals (i.e., the second connection terminal 112b and the fourth connection terminal 114b) of one of the second stationary lead-out pieces 112 and 114 are arranged along a first direction between the connection terminals of the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 of the other. In this embodiment, the contact system 10 can perform series-parallel switching 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. With the above structural arrangement, at least one set of connecting terminals connected to the same load terminal can be placed close together, thereby facilitating subsequent circuit connection and insulation design between connecting terminals connected to different load terminals.

[0217] Continue to combine Figures 10 to 12 As shown, the first movable contact unit 101 is located between the armature assembly 22 and the second movable contact unit 102, that is, the second movable contact unit 102 is located on the side of the first movable contact unit 101 facing away from the armature assembly 22. In the first movable contact unit 101, the first movable contact 1311 farther from the second movable contact unit 102 is connected to the stationary lead-out piece 1 P1, the first movable contact 1311 closer to the second movable contact unit 102 is connected to the stationary lead-out piece 2 P2, the second movable contact 1321 farther from the second movable contact unit 102 is connected to the stationary lead-out piece 3 P3, and the first movable contact 1311 closer to the second movable contact unit 102 is connected to the stationary lead-out piece 4 P4.

[0218] In the second movable contact unit 102, the first movable contact 1311, which is closer to the first movable contact unit 101, is connected to the stationary lead-out piece five P5; the first movable contact 1311, which is farther from the first movable contact unit 101, is connected to the stationary lead-out piece six P6; the second movable contact 1321, which is closer to the first movable contact unit 101, is connected to the stationary lead-out piece seven P7; and the second movable contact 1321, which is farther from the first movable contact unit 101, is connected to the stationary lead-out piece eight P8.

[0219] In this embodiment, terminal D6 of stationary lead-out piece 6 P6 and terminal D1 of stationary lead-out piece 1 P1 are arranged along a third direction; terminal D8 of stationary lead-out piece 8 P8 and terminal D3 of stationary lead-out piece 3 P3 are arranged along a third direction; terminal D2 of stationary lead-out piece 2 P2 and terminal D4 of stationary lead-out piece 4 P4 are both located along a first direction between terminal D6 of stationary lead-out piece 6 P6 and terminal D8 of stationary lead-out piece 8 P8; and terminal D5 of stationary lead-out piece 5 P5 and terminal D7 of stationary lead-out piece 7 P7 are both located between terminal D1 of stationary lead-out piece 1 P1 and terminal D3 of stationary lead-out piece 3 P3. With this structural arrangement, at least one set of two connection terminals for connecting the same end of the circuit can be arranged adjacently, so that the two connection terminals can be externally connected to the same end of the circuit. Compared to situations where two terminals with the same external connection are separated by other connection terminals, this structural arrangement in this application helps reduce connection difficulty and facilitates isolation between two connection terminals with different external connections.

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

[0221] Combination Figure 10 As shown, the connection terminals (i.e., terminals D5 and D7) of the first stationary lead-out piece 111 and the third stationary lead-out piece 113, located in the middle along the first direction, are connected in series with the connection terminals (i.e., terminals D2 and D4) of the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114, located in the middle along the first direction, in the first switching state. Based on this close arrangement of the connection terminals used for series connection, in a power supply system for a battery pack using a relay, the length of the wires between the series-connected battery packs can be shortened, reducing line resistance and energy loss, especially in high-current scenarios. Furthermore, this arrangement can also prevent current shift due to uneven impedance on both sides of the line, thereby improving the battery pack's balance.

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

[0223] Furthermore, the relay also includes an isolator that is fixed relative to the mounting base 30 and electrically isolates the connection terminals of the first lead-out unit 101 and the second lead-out unit 102 that are adjacent to each other in a first direction.

[0224] For example, combining Figure 11 As shown, in some embodiments, the relay includes four isolators: a first isolator 50, a second isolator 60, a third isolator 70, and a fourth isolator 80. Each of the first isolator 50, second isolator 60, third isolator 70, and fourth isolator 80 is connected to one of two lead-out units 10a (e.g., first lead-out unit 101 and second lead-out unit 102). It should be noted that the number of isolators can be one, two, or three, or even more than three. Again, there are no limitations on the number or placement of the isolators.

[0225] For ease of understanding, the following examples illustrate the setting of the isolation element, but this does not mean that the structure and placement of the isolation element are limited to this.

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

[0227] The first isolator 50 electrically isolates stationary lead-out piece 1 (P1) and stationary lead-out piece 5 (P5), thus increasing the creepage distance between them. The second isolator 60 electrically isolates stationary lead-out piece 2 (P2) and stationary lead-out piece 6 (P6), thus increasing the creepage distance between them. The third isolator 70 electrically isolates stationary lead-out piece 3 (P3) and stationary lead-out piece 7 (P7), thus increasing the creepage distance between them. The fourth isolator 80 electrically isolates stationary lead-out piece 4 (P4) and stationary lead-out piece 8 (P8), thus increasing the creepage distance between them.

[0228] In this embodiment, the creepage distance between the connection terminals of different terminals used for external connection circuits is increased at corresponding positions by using the first isolation member 50, the second isolation member 60, the third isolation member 70 and the fourth isolation member 80, thereby improving the reliability of the relay performance.

[0229] The first isolation member 50 and the third isolation member 70 are mirror-symmetrical about a plane perpendicular to the first direction. The second isolation member 60 and the fourth isolation member 80 are mirror-symmetrical about a plane perpendicular to the first direction. The first stationary lead-out piece 111 and the third stationary lead-out piece 113, located in the same lead-out unit 10a, are mirror-symmetrical about a plane perpendicular to the first direction. For example, stationary lead-out piece 1 P1 and stationary lead-out piece 3 P3 are mirror-symmetrical about a plane perpendicular to the first direction. Furthermore, in some embodiments, stationary lead-out piece 5 P5 and stationary lead-out piece 7 P7 are mirror-symmetrical about a plane perpendicular to the first direction.

[0230] The second stationary lead-out piece 112 and the fourth stationary lead-out piece 114, located in the same lead-out unit 10a, are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry. For example, stationary lead-out piece 2 P2 and stationary lead-out piece 4 P4 are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry. Furthermore, in some embodiments, stationary lead-out piece 6 P6 and stationary lead-out piece 8 P8 are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry.

[0231] In the above embodiments, the mirror-symmetric structure simplifies the processing and installation of each component. This mirror-symmetric structure also facilitates the assembly of the relay components and improves space utilization, thus enabling relay miniaturization. Furthermore, this design simplifies the structure, allowing at least some static leads to be shared, saving production costs. In addition, it ensures that each static lead has a balanced current-carrying capacity.

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

[0233] Combination Figure 14 and Figure 15As shown, the first isolation member 50 includes a first barrier 51 and a second barrier 52. The first barrier 51 is located between the outer wall surface 30d of the mounting base 30 and the connection terminal of one of the first stationary leads 111 (i.e., stationary lead-ahead P1 or stationary lead-ahead P5). That is, the first barrier 51 may be located between the outer wall surface 30d of the mounting base 30 and terminal D1, or the first barrier 51 may be located between the outer wall surface 30d of the mounting base 30 and terminal D5. The second barrier 52 is connected to the first barrier 51. The second barrier 52 is located along a first direction between the connection terminals of the two first stationary leads 111 (i.e., stationary lead-ahead P1 and stationary lead-ahead P5), that is, the second barrier 52 is located between terminal D1 and terminal D5, thereby increasing the creepage distance of the connection terminals of the two first stationary leads 111 (i.e., terminal D1 and terminal D5) in the first direction. Therefore, in this embodiment, under the shielding of the first baffle 51 and the second baffle 52, the creepage distance between the surface of terminal D1 and terminal D5 facing the outer wall 30d of the mounting base 30 is increased.

[0234] The first isolation member 50 also includes a third baffle 53, which is connected to the first baffle 51 and the second baffle 52 on the inner side in the third direction (i.e., on the side closer to the center of the mounting base 30 in the third direction). The first baffle 51, the second baffle 52 and the third baffle 53 are connected and together form a first receiving groove 50a with a first opening. The connection terminal of one of the first stationary leads 111 (i.e., stationary lead-ahead P1 or stationary lead-ahead P5) is received in the first receiving groove 50a and exposed from the first opening of the first isolation member 50. In this embodiment, due to the provision of the third baffle 53, the creepage distance of the connection terminals of the two first stationary leads 111 (i.e., terminal D1 and terminal D5) on the inner side in the first direction can be increased, avoiding current breakdown of terminal D1 and terminal D5 at the corner positions. By providing the first opening, the connection terminal at the first receiving groove 50a can be reliably connected to the outside.

[0235] Combination Figure 16 and Figure 17As shown, the second isolator 60 includes a fourth barrier 61 and a fifth barrier 62. The fourth barrier 61 is located between the outer wall surface 30d of the mounting base 30 and the connection terminal of one of the second stationary leads 112 (i.e., stationary lead two P2 or stationary lead six P6). That is, the fourth barrier 61 can be located between the outer wall surface 30d of the mounting base 30 and terminal two D2, or the fourth barrier 61 can be located between the outer wall surface 30d of the mounting base 30 and terminal six D6. The fifth barrier 62 is connected to the fourth barrier 61. The fifth barrier 62 is located along a first direction between the connection terminals of the two second stationary leads 112 (i.e., stationary lead two P2 and stationary lead six P6), thereby increasing the creepage distance between the connection terminals of the two second stationary leads 112 (i.e., terminal two D2 and terminal six D6) in the first direction. Therefore, in this embodiment, the creepage distance between terminals D2 and D6 on the side facing the outer wall 30d of the mounting base 30 is increased under the shielding of the fourth barrier 61 and the fifth barrier 62.

[0236] The second isolator 60 also includes a sixth baffle 63, which is connected to the fourth baffle 61 and the fifth baffle 62 on the inner side in the third direction. The fourth baffle 61, the fifth baffle 62 and the sixth baffle 63 are connected and together enclose a second receiving groove 60a with a second opening. The connection terminal of one of the second stationary leads 112 (i.e., stationary lead 2 P2 or stationary lead 6 P6) is received in the second receiving groove 60a and exposed from the second isolator 60 through the second opening. In this embodiment, the presence of the sixth baffle 63 increases the creepage distance of the connection terminals of the two second stationary leads 112 (i.e., terminal 2 D2 and terminal 6 D6) on the inner side in the first direction, preventing current breakdown at the corners of terminal 2 D2 and terminal 6 D6. By providing the second opening, the connection terminal at the second receiving groove 60a can be reliably connected to the outside.

[0237] Combined again Figure 10 , Figure 11 and Figure 13 As shown, the mounting base 30 has independently provided first grooves C1, second grooves C2, third grooves C3, and fourth grooves C4 corresponding to the first lead-out unit 103 and the second lead-out unit 104. The first isolation member 50, second isolation member 60, third isolation member 70, and fourth isolation member 80 can be partially disposed within their respective grooves. For example, each of the first isolation member 50, second isolation member 60, third isolation member 70, and fourth isolation member 80 has a clamping part S, which respectively engages with the first groove C1, second groove C2, third groove C3, and fourth groove C4. This allows for convenient installation of the corresponding isolation members using these grooves, improving the installation stability of the isolation members.

[0238] The clamping part S is used to connect with the corresponding bent part, and the clamping part S is limited to the relay housing and / or the corresponding bent part in the first direction, the second direction and the third direction.

[0239] Each clamping part S is provided with a clamping groove to mate with the corresponding stationary lead-out piece. The clamping grooves of the clamping parts S are used to improve the assembly stability between each isolator and the corresponding stationary lead-out piece, 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 only needs to be able to clamp a portion of the structure of the corresponding stationary lead-out piece to improve the assembly stability between the isolator and the corresponding stationary lead-out piece. The shape of the clamping part S and the clamping groove are not limited here.

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

[0241] In some implementations, combined Figure 8 , Figure 9 and Figure 13 As shown, the mounting base 30 has a first end face 30a and a second end face 30b in a first direction. The first groove C1 and the second groove C2 both extend along the first direction to the first end face 30a, and the third groove C3 and the fourth groove C4 both extend along the first direction to the second end face 30b. The first groove C1, the second groove C2, the third groove C3, and the fourth groove C4 all extend to the inner wall surface 30c and the outer wall surface 30d of the mounting base 30, and each forms an inner groove opening on the inner wall surface 30c and an outer groove opening on the outer wall surface 30d, respectively. Understandably, the inner groove opening communicates with the inner cavity of the mounting base 30. Taking the mounting base 30 having a first mounting cavity 301 and a second mounting cavity 302 as an example, the inner groove opening C11 of the first groove C1 and the inner groove opening C21 of the second groove both communicate with the first mounting cavity 301, and the inner groove opening C31 of the third groove C3 and the inner groove opening C41 of the fourth groove C4 both communicate with the second mounting cavity 302.

[0242] In some embodiments, the inner groove is located on the side wall of the mounting base 30 parallel to the second direction, and the outer groove is located on the outer wall surface 30d of the mounting base 30 that is closer to the second moving contact unit 102 in the second direction. Thus, each groove can accommodate the corresponding stationary lead-out piece from the inside of the mounting base 30 to the outside. At the same time, since the first groove C1 is located on the side wall of the mounting base 30 parallel to the second direction, that is, the side wall of the mounting base 30 extending parallel to the second direction forms the first groove C1 to accommodate stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5. The side wall is provided with a thickened portion corresponding to stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5, which is beneficial for reliably supporting stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5 along the second direction and enhancing the installation stability of stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5. In other words, this structural arrangement makes it less likely for stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5 to loosen or deform when subjected to the contact force of the moving and stationary contacts 13b in the second direction, thereby improving the reliability of the relay.

[0243] The depth of the inner groove C11 of the first groove C1 and the inner groove C21 of the second groove in the first direction is less than or equal to 1 / 3 of the depth of the first mounting cavity 301. This shallow depth of the inner groove prevents the sidewalls of the first mounting cavity 301 located on both sides along the third direction from being divided into at least two relatively independent parts. This allows the two sidewalls in the third direction to maintain good structural strength and not easily deform. In addition, it can also prevent at least one side of the sidewall on the side where the outer surface 30d is located from being separated from other parts by the groove (such as the second groove C2) extending along the first direction, and prevent the sidewall from being unable to withstand the contact pressure when the moving contact and the stationary contact are in contact and thus deforming.

[0244] The depth of the inner groove C31 of the third groove C3 and the inner groove C41 of the fourth groove C4 in the first direction is less than or equal to 1 / 3 of the depth of the second mounting cavity 302. This shallow depth of the inner groove prevents the sidewalls of the second mounting cavity 302 located on both sides along the third direction from being divided into at least two relatively independent parts. This allows the two sidewalls in the third direction to maintain good structural strength and not easily deform. In addition, it can also prevent at least one side of the sidewall on the side where the outer surface 30d is located from being separated from other parts by the groove (such as the third groove C3) extending along the first direction, and prevent the sidewall from being unable to withstand the contact pressure when the moving contact and the stationary contact are in contact and thus deforming.

[0245] It should be noted that the outer slots C12 of the first groove C1, C22 of the second groove C2, C32 of the third groove, and C42 of the fourth groove C4 are all located on the outer side of the outer wall surface 30d of the mounting base 30, which is closer to the contact system 10 in the second direction. Thus, the connection terminals of each stationary lead-out piece extending from these outer slots of the mounting base 30 can be arranged in the same plane parallel to the outer wall surface 30d, which facilitates the miniaturization of the relay. Furthermore, it reduces the conductive material consumed by each stationary lead-out piece for extending connection terminals outside the mounting base 30, thereby reducing costs.

[0246] In other implementations, as long as the distance between adjacent connection terminals is large enough, insulation of adjacent connection terminals is not required.

[0247] It should be noted that the stationary leads in the relay are not limited to being bent out to the same outer wall surface 30d of the base body 31.

[0248] For example, combining Figure 18 and Figure 19 As shown, static lead-out pieces P1, P2, P3, P4, P5, P6, P7, and P8 all protrude from the main body 31 along a third direction. Figure 21 As shown, the mounting base 30 has corresponding grooves for each stationary lead-out piece. Because... Figure 21 Due to perspective, Figure 21 Only two sets of first grooves C1, two sets of second grooves C2, and two sets of fourth grooves C4 are shown. In conjunction with the aforementioned embodiment that includes a third groove C3, in this embodiment, the mounting base 30 also has two sets of third grooves C3. Thus, each stationary lead-out piece passes through the mounting base 30 from the corresponding groove. The structural configuration of each stationary lead-out piece and each groove will not be described in detail here.

[0249] The lead-out unit 10a includes a first external lead-out member 10a1 and a second external lead-out member 10a2. That is, both the first lead-out unit 103 and the second lead-out unit 104 include a first external lead-out member 10a1 and a second external lead-out member 10a2. In the first lead-out unit 103, stationary lead-out piece 1 P1 and stationary lead-out piece 3 P3 are connected via the first external lead-out member 10a1, allowing them to be used as a single lead-out terminal. Stationary lead-out piece 2 P2 and stationary lead-out piece 4 P4 are connected via the second external lead-out member 10a2, allowing them to be used as a single lead-out terminal. Therefore, this arrangement allows the first moving contact assembly 131 and the second moving contact assembly 132 of the first moving contact unit 101 to be connected in parallel.

[0250] For ease of description, the first external lead-out member 10a1 and the second external lead-out member 10a2 in the second lead-out unit 103 can be defined as the third external lead-out member 10a3 and the fourth external lead-out member 10a4, respectively. The stationary lead-out piece 5 P5 and the stationary lead-out piece 7 P7 are connected via the third external lead-out member 10a3, thus allowing them to be used as a single lead-out terminal. The stationary lead-out piece 6 P6 and the stationary lead-out piece 8 P8 are connected via the fourth external lead-out member 10a4, allowing them to be used as a single lead-out terminal. Therefore, this arrangement allows the first moving contact assembly 131 and the second moving contact assembly 132 of the second moving contact unit 102 to be connected in parallel.

[0251] For ease of understanding, the two opposing sidewalls of the sidewall portion 311 of the seat body 31 in the third direction will be referred to as "first sidewall 311a" and "second sidewall 311b". In some embodiments, the sidewall portion 311 of the seat body 31 further includes a third sidewall 311c and a fourth sidewall 311d, which are disposed opposite to each other in the second direction. The two ends of the third sidewall 311c are connected to the first sidewall 311a and the second sidewall 311b, and the two ends of the fourth sidewall 311d are connected to the first sidewall 311a and the second sidewall 311b. Thus, the space enclosed by the first sidewall 311a, the second sidewall 311b, the third sidewall 311c, and the fourth sidewall 311d is the space enclosed by the seat body 31.

[0252] It should be noted that, since the first moving contact assembly 131 and the second moving contact assembly 132 are arranged in parallel in the second switching state, for the same lead-out unit 10a, the first stationary lead-out piece 111 and the third stationary lead-out piece 113 need to be connected to the same load terminal of the external device. For example, the first stationary lead-out piece 111 and the third stationary lead-out piece 113 are connected through the first external lead-out piece 10a1, and can be used to connect to the load terminal of the external device using either the first external lead-out piece 10a1 or one of the first stationary lead-out piece 111 and the third stationary lead-out piece 113. Accordingly, since the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 need to be connected to another load terminal of an external device, for example, the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 are connected through the second external lead-out piece 10a2, and can be used to connect to another load terminal of an external device using either the second external lead-out piece 10a2 or one of the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114.

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

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

[0255] Correspondingly, the first stationary lead-out component 11 and the second stationary lead-out component 12 of the second lead-out unit 104 are electrically connected through the second moving contact unit 102. That is, in the second lead-out unit 104, the third external lead-out component 10a3 corresponding to the first stationary lead-out component 11 and the fourth external lead-out component 10a4 corresponding to the second stationary lead-out component 12 are connected in series. Thus, in this second switching state, the contact system 10 has two independent conductive paths. In practical applications, when the first external lead-out component 10a1 corresponding to the first lead-out unit 103 and the third external lead-out component 10a3 corresponding to the second lead-out unit 104 are connected to the same end of the external circuit, and the second external lead-out component 10a2 corresponding to the first lead-out unit 103 and the fourth external lead-out component 10a4 corresponding to the second lead-out unit 104 are connected to the other end of the external circuit, the two conductive paths are arranged in parallel.

[0256] Therefore, in the embodiments of this application, the relay can realize series-parallel switching, thus having a wider range of application scenarios.

[0257] The relay is not limited to having two or more moving contact units 10b. For example, if the relay has one moving contact unit 10b, then the third external lead-out member 10a3 and the fourth external lead-out member 10a4 corresponding to the second moving contact unit 102 can be omitted.

[0258] When the relay is equipped with a set of moving contact units 10a, the number of the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 can all be one, and all of them protrude from the base body 31 in a third direction. Further, the first stationary lead-out piece 111 and the third stationary lead-out piece 113 both protrude from the first sidewall 311a in a third direction, and are connected to each other via a first external lead-out piece 10a1. The second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 both protrude from the sidewall of the mounting base 30 in a third direction, and are connected to each other via a second external lead-out piece 10a2.

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

[0260] Combination Figure 19As shown, the first stationary lead-out piece 111 and the second stationary lead-out piece 112 are provided with limiting mating portions ST extending in the second direction. The limiting mating portions ST mate with the mounting base 30 and limit the position of the stationary lead-out piece in the third direction relative to the mounting base 30. This prevents the corresponding stationary lead-out pieces from moving relative to the mounting base 30 in the third direction and becoming loose or detached from the mounting base 30, thereby improving the installation stability of the stationary lead-out pieces on the side wall of the mounting base 30. Understandably, the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114 can also be provided with limiting mating portions ST that mate with the mounting base 30, thereby improving stability in the third direction. Of course, in some embodiments, at least one of the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 is provided with a limiting engagement portion ST, so that the corresponding stationary lead-out piece engages with the mounting base 30 through the limiting engagement portion ST, thereby improving the stability of the stationary lead-out piece. This also improves the stability of some stationary lead-out pieces in the relay compared to when none of the stationary lead-out pieces are provided with a limiting engagement portion ST. Since the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 respectively engage with the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4, these grooves provide a good limiting effect for the corresponding stationary lead-out pieces in the first and second directions.

[0261] Combination Figure 20 As shown, in some embodiments, the coil assembly 21 includes at least two coil windings 211 arranged along the first direction. Therefore, in this embodiment, by configuring the coil assembly 21 to include at least two coil windings 211 arranged along the first direction, more coil windings 211 can be arranged using the space in the first direction, improving the space utilization rate of the coil assembly 21 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 21 on the plane perpendicular to the first direction, thereby enabling the miniaturization of the relay.

[0262] Furthermore, the dimension of the coil winding 211 in the second direction is less than or equal to the dimension of the coil winding 211 in the first direction. In this way, the space occupied by the coil winding 211 in the second direction can be reduced, while the space utilization in the first direction can be increased, making the layout of the coil winding 211 and the moving contact unit 10b in the first direction more reasonable, which is conducive to the miniaturization of the relay.

[0263] It should be noted that the technical features of the above embodiments can be combined in any way to solve one or more problems.

[0264] For example, in an embodiment where the coil assembly 21 of the electromagnetic system 20 includes at least two coil windings 211 arranged along a first direction, the electromagnetic system 20 and the moving contact unit 10b can be arranged along a second direction perpendicular to the first direction. Thus, in an embodiment where the moving contact unit 10b includes at least two moving contact components 13 arranged along the first direction and capable of being connected in parallel, the parallel branches formed by the coil windings 211 and the moving contact components 13 maintain a consistent arrangement in the first direction, thereby improving space utilization. While increasing the magnetic driving force of the coil assembly 211 to ensure sufficient driving force for multiple moving contact components 13, the area occupied by the relay in the plane perpendicular to the first direction is reduced. Therefore, this type of relay achieves miniaturization while significantly reducing contact resistance, thus meeting usage requirements.

[0265] Furthermore, since the electromagnetic system 20 and the moving contact unit 10b are arranged along the second direction, the electromagnetic system 20 can face each moving contact component 13 in the second direction and easily establish an assembly relationship and linkage with each moving contact component 13. This arrangement helps to avoid the electromagnetic system 20 and the moving contact unit 10b occupying too much space in the first direction due to their staggered arrangement along the first direction. This allows the size of the relay in the first direction to be mainly determined by the moving contact unit 10b, thus enabling reasonable and convenient control of the size in the first direction according to requirements. In addition, this arrangement also makes the distance between the driving end of the electromagnetic system 20 and each moving contact component 13 along the second direction closer and easier to achieve consistency, thereby helping to reduce the required usage. The length of the push mechanism 40 is reduced, thus reducing material consumption and costs, and preventing the push mechanism 40 from easily deforming and breaking due to excessive length. Since the distance between the drive end of the electromagnetic system 20 and each moving contact component 13 along the second direction can be easily aligned, it is advantageous to symmetrically set the push mechanism 40 between the electromagnetic system 20 and each moving contact component 13. This results in more uniform force on each moving contact component 13, reducing contact vibration or jitter. The driving force applied by the push mechanism 40 is more balanced, and the contact pressure of each moving contact component 13 is more balanced, ensuring that the contact resistance can meet the predetermined requirements. It also avoids greater local stress concentration in the push mechanism 40, which would affect the mechanical life. In addition, it is conducive to standardized production, reducing production cycle and production costs.

[0266] 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.

[0267] The embodiments described above are merely illustrative of 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 movable contact unit includes at least two movable contact components arranged along a first direction and capable of being connected in parallel; An electromagnetic system is arranged along a second direction perpendicular to the first direction with the moving contact unit. The electromagnetic system includes a coil assembly and an armature assembly. The coil assembly includes at least two coil windings arranged along the first direction. When each coil winding is energized, it jointly drives the armature assembly to move. The armature assembly can drive all the moving contact components to move.

2. The relay according to claim 1, characterized in that, The dimension of each coil winding in the second direction is less than or equal to the dimension of the coil winding in the first direction.

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

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

5. The relay according to claim 3, characterized in that, The direction of motion of each of the aforementioned moving contact components is parallel to the second direction.

6. The relay according to claim 3, characterized in that, The relay further includes a driving mechanism, which includes multiple sets of driving clips arranged along the first direction. Each set of driving clips is connected to the armature assembly and corresponds to each of the moving contact components. The armature assembly can drive each of the moving contact components to move via the multiple sets of driving clips.

7. The relay according to claim 1, characterized in that, It also includes a lead-out unit corresponding to the moving touch unit. The lead-out unit includes a first static lead-out component and a second static lead-out component. The first static lead-out component and the second static lead-out component are respectively arranged on both sides of the moving touch unit along a third direction. The first direction, the second direction and the third direction are perpendicular to each other. Each of the moving contact components is configured to switch between a first switching state and a second switching state under the action of the armature component; In the first switching state, each of the moving contact components disconnects the electrical path between the first stationary lead-out component and the second stationary lead-out component; in the second switching state, each of the moving contact components connects the electrical path between the first stationary lead-out component and the second stationary lead-out component.

8. The relay according to claim 7, characterized in that, At least one of the moving contact components has at least two parallel branches arranged in a plane perpendicular to the first direction.

9. The relay according to claim 8, characterized in that, Each of the moving contact components includes two moving contacts. The two moving contacts of the same moving contact component can come into contact with each other or separate from each other under the drive of the armature component. When the two moving contacts come into contact with each other, they form the parallel branch and conduct the electrical path between the first static lead-out component and the second static lead-out component. When the two moving contacts separate from each other, the electrical path between the first static lead-out component and the second static lead-out component is broken.

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

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

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

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

14. The relay according to claim 7, characterized in that, Both the first static lead-out assembly and the second static lead-out assembly include a plurality of static lead-out members arranged along the first direction. Each static lead-out member in the first static lead-out assembly and each static lead-out member in the second static lead-out assembly corresponds one-to-one with each moving contact assembly. Each moving contact assembly can conduct or disconnect the electrical path between the corresponding two static lead-out members.

15. The relay according to claim 14, characterized in that, The relay also includes a mounting base, the moving contact unit is mounted in the mounting base, and all the stationary leads extend out of the mounting base along the third direction.

16. The relay according to claim 15, characterized in that, The lead-out unit further includes a first external lead-out member and a second external lead-out member. One end of each of the static lead-out members in the first static lead-out assembly extending from the mounting base is connected to the first external lead-out member. One end of each of the static lead-out members in the second static lead-out assembly extending from the mounting base is connected to the second external lead-out member.

17. The relay according to claim 14, characterized in that, The relay also includes a mounting base, the moving contact unit is mounted in the mounting base, and all the stationary leads have connection terminals located outside the mounting base, all of which are located on the same side of the mounting base in the second direction.

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

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

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

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

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

23. The relay according to claim 22, characterized in that, It also includes an isolator that is fixed relative to the mounting base and electrically isolates the connection terminals of the first lead-out unit and the second lead-out unit that are adjacent to each other in the first direction.

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

25. A vehicle, characterized in that, Includes the power distribution device as described in claim 24.

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