Relay

Abstract

The invention relates to a relay, which comprises a contact system, the contact system comprises a leading-out unit and a movable contact unit, the leading-out unit comprises a first static leading-out assembly and a second static leading-out assembly, the movable contact unit comprises a plurality of movable contact assemblies, and the plurality of movable contact assemblies are arranged along a first direction. The moving contact unit is configured to be capable of switching between a first switch state and a second switch state; wherein in the first switch state, the plurality of moving contact assemblies all disconnect the electrical access between the first static lead-out assembly and the second static lead-out assembly; and in the second switch state, the plurality of moving contact assemblies are connected in parallel and all conduct the electrical path between the first static leading-out assembly and the second static leading-out assembly, and at least one moving contact assembly is provided with at least two parallel branches in a plane intersecting with the first direction. According to the relay, the contact resistance can be reduced, and meanwhile miniaturization can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of relays, and in particular to a relay. Background Art

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

[0003] In the related art, a larger number of movable contacts that can be connected in parallel are usually arranged in the contact system of the relay to reduce the overall contact resistance of the relay, such as setting multiple groups of contacts on a group of contact components (including movable contacts and stationary contacts).

[0004] However, in the relay of the prior art, the number of contacts arranged in the contact assembly in the contact system is limited, which cannot meet the requirements of ultra-low contact resistance (such as ≤0.05mΩ). If more contacts are arranged according to the original arrangement rule of the contacts in order to further reduce the contact resistance, the contact part will occupy a large arrangement space, which is not conducive to the miniaturization of the relay and makes the relay unable to adapt to the installation and use needs in a small installation environment. Summary of the invention

[0005] Based on this, it is necessary to provide a relay to address the problem of how to reduce contact resistance while achieving miniaturization.

[0006] The present application provides a relay, including a contact system, wherein the contact system includes:

[0007] The lead-out unit comprises a first static lead-out component and a second static lead-out component;

[0008] A movable contact unit, comprising a plurality of movable contact components, the plurality of movable contact components are arranged along a first direction, and the movable contact unit is configured to be switchable between a first switch state and a second switch state;

[0009] Wherein, in the first switch state, the plurality of moving contact assemblies disconnect the electrical path between the first static lead-out assembly and the second static lead-out assembly; in the second switch state, the plurality of moving contact assemblies are connected in parallel with each other and conduct the electrical path between the first static lead-out assembly and the second static lead-out assembly, and at least one of the moving contact assemblies arranges at least two parallel branches in a plane intersecting the first direction.

[0010] In the above relay, since in the second switch state, the plurality of moving contact assemblies conduct the electrical path between the first static lead-out assembly and the second static lead-out assembly, and the plurality of moving contact assemblies are connected in parallel with each other, it is beneficial to reduce the contact resistance. Moreover, since the plurality of moving contact assemblies are arranged along the first direction, therefore, the plurality of moving contact assemblies are arranged in a parallel structure in the first direction; since at least one of the moving contact assemblies arranges at least two parallel branches in a plane intersecting the first direction, then the parallel structure is expanded by using the plane intersecting the first direction, and the parallel structure is arranged in two spatial dimensions at the same time, which can not only increase the number of parallel paths, but also avoid the parallel structure occupying too much volume in a certain direction and resulting in an over-large volume of the relay. Therefore, the relay of the present application realizes miniaturization while significantly reducing the contact resistance, so as to meet the usage requirements.

[0011] In some embodiments, in the same moving contact assembly, at least one of the parallel branches is arranged along a second direction with respect to another parallel branch, and the second direction intersects the first direction. Thus, the parallel structure of the relay is expanded in both the first direction and the second direction, which is beneficial to reducing the contact resistance and avoiding the parallel structure occupying too much volume in a certain direction and resulting in an over-large volume of the relay. Since the parallel branches are arranged along the second direction without crossing, therefore, each parallel branch can freely adjust its volume as needed. For example, in order to adapt to high voltage or high current scenarios, the volume can be appropriately increased to obtain a greater current-carrying capacity.

[0012] In some embodiments, the first direction is perpendicular to the second direction. In this way, the parallel branches can be arranged in two mutually perpendicular dimensions. In this structure, it is beneficial for the moving contact assembly to improve the utilization rate of the assembly space in the relay, so that the overall shape of the relay can be made more square (for example, except for the necessary lead-out end part structure, the overall appearance of the relay can be in the shape of a cube), realizing miniaturization.

[0013] In some embodiments, the first static lead-out component and the second static lead-out component are respectively disposed on two sides of the moving contact unit along a third direction. The moving contact component has a moving direction, and the moving direction of the moving contact component is parallel to the second direction. The first direction, the second direction, and the third direction are perpendicular to each other pairwise. With such a structural arrangement, the layout of the moving contact unit is compact, reducing space waste, which is conducive to achieving miniaturization. Among them, since the moving direction of the moving contact component is parallel to the second direction, two parallel branches in the same moving contact component can be connected in parallel by contacting each other, thus avoiding the need for each parallel branch to contact or disconnect from the first static lead-out component and the second static lead-out component respectively, reducing the area and consumables of the first static lead-out component and the second static lead-out component, and further facilitating the miniaturization of the relay. In addition, each moving contact component moves in the second direction, which is also conducive to arranging the electromagnetic system for driving each moving contact component to move on the same side of each moving contact component along the second direction, that is, the electromagnetic system can face each moving contact component in the second direction at the same time and easily establish an assembly relationship and form a linkage with each moving contact component, and it can also avoid the electromagnetic system from occupying too much space in the first direction due to being staggeredly arranged with the moving contact unit in the first direction. In this way, the size of the relay in the first direction is mainly determined by the moving contact unit, and the size in the first direction can be conveniently controlled as needed.

[0014] In some embodiments, the contact system includes at least two of the moving contact units and at least two lead-out units respectively corresponding to each of the moving contact units. Each of the moving contact units is disposed along a second direction, and the second direction is perpendicular to the first direction. When each of the moving contact units is in the first switch state, they are respectively electrically connected in cooperation with adjacent moving contact units, so that among the two lead-out units respectively corresponding to two adjacent moving contact units arranged adjacent to each other, the first static lead-out component of one of the lead-out units and the second static lead-out component of the other lead-out unit are connected in series with each other. When each of the moving contact units is in the second switch state, each of the lead-out units is set to be open-circuited. Thus, the contact system can perform series-parallel switching to adapt to certain special usage scenarios, such as being applied to the battery management system of an automobile to optimize the charge and discharge functions of the battery pack.

[0015] In some embodiments, the moving contact assembly includes two moving contacts, and the two moving contacts are arranged in a plane perpendicular to the first direction. In the first switching state, the two moving contacts of the moving contact assembly are separated from each other to disconnect the electrical path between the first static lead-out assembly and the second static lead-out assembly; in the second switching state, the two moving contacts of the moving contact assembly are in electrical contact and both form the parallel branch to conduct the electrical path between the first static lead-out assembly and the second static lead-out assembly; wherein, the moving contact assembly is configured such that when switching between the first switching state and the second switching state, the two moving contacts of the moving contact assembly move in opposite directions; or, the moving contact assembly is configured such that when switching between the first switching state and the second switching state, the two moving contacts of the moving contact assembly move in the same direction. In this way, the switching of the moving contact assembly between the first switching state and the second switching state can be used to meet the usage requirements of the relay, and in the second switching state, the moving contact unit uses multiple moving contact assemblies to expand the parallel branch in the first direction, and can use multiple diversion branches to expand the parallel branch inside the moving contact assembly in the first direction, thereby facilitating the reduction of the contact resistance.

[0016] In some embodiments, the moving contact unit includes two moving contact assemblies. In the conventional technology, the moving contact unit and the lead-out unit usually need to be installed in the relay housing. Among them, the relay housing is provided with an opening, and the first static lead-out assembly and the second static lead-out assembly in the lead-out unit usually enter the relay housing through the opening and penetrate the side wall of the relay housing. On this basis, if all the moving contact assemblies and the lead-out unit are placed into the relay housing along the same opening, then, a groove with a relatively large depth needs to be opened on the relay housing for all the first static lead-out assemblies and the second static lead-out assemblies to penetrate, resulting in a significant reduction in the strength of the side wall of the relay housing. The side wall of the relay housing is prone to bending, and may affect the contact assembly accuracy as well as the overall structural strength and stability of the relay. In some embodiments proposed in the present application, since the number of moving contact assemblies is two, it provides a basis for respectively providing two independent chambers for the relay housing to accommodate the two groups of moving contact assemblies and setting the lead-out unit into two groups. Each chamber can be correspondingly provided with a groove for the lead-out unit to penetrate, so that the depth of the groove on the side wall of the relay housing is reduced to half or even more of the original, thereby effectively improving the bending strength of the side wall of the relay housing. In addition, it is also beneficial to respectively fix and support the two groups of moving contact assemblies by configuring more sufficient installation structures in the independent chambers, improving the stability of the moving contact assemblies, and achieving physical isolation and independent stress bearing.

[0017] In some embodiments, each of the moving contact components includes two moving contacts. The two moving contacts are arranged in a second direction perpendicular to the first direction. Each moving contact has a fixed end and a swinging end. The fixed end of one of the moving contacts is fixed to the first static lead-out component, and the fixed end of the other moving contact is fixed to the second static lead-out component. Moreover, in two moving contacts of the same moving contact component, when the two swinging ends are in electrical contact with the fixed end of the other moving contact along the second direction respectively, both of the two moving contacts form the parallel branch to conduct the electrical path between the first static lead-out component and the second static lead-out component. When both of the two swinging ends are away from the fixed end of the other moving contact along the second direction, both of the two moving contacts disconnect the electrical path between the first static lead-out component and the second static lead-out component. In this embodiment, on the one hand, the two moving contacts are arranged in the second direction perpendicular to the first direction. On the other hand, the two moving contacts are used to contact each other to form a parallel branch to conduct the electrical path between the first static lead-out component and the second static lead-out component, so that the contact resistance can be reduced, and the parallel structure is extended in two spatial dimensions of the first direction and the second direction, which is beneficial to miniaturization. Both of the two moving contacts adopt swinging moving springs with fixed ends and swinging ends, which not only realizes constructing a parallel structure with a simple structure, but also can use the electromagnetic force generated by each other when passing current to increase the contact pressure between them and improve the ability to withstand high fault current.

[0018] In some embodiments, in at least one of the moving contact components, both of the two moving contacts include a plurality of current guiding branches, and the current guiding branches on the two moving contacts correspond to each other one by one. The plurality of current guiding branches on the moving contact are arranged in 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 conducted, and are respectively connected in parallel with the current guiding branches on the other moving contact. Since the arrangement direction of the plurality of current guiding branches and the arrangement direction of the plurality of moving contact components are both the first direction, with such an arrangement, the moving contact unit can not only use the plurality of moving contact components to extend the parallel branch in the first direction, but also use the plurality of current guiding branches to extend the parallel branch inside the moving contact component in the first direction, which further helps to reduce the contact resistance. Also, because the number of parallel branches is increased, the contact system in the relay is not easily disconnected completely due to jitter. That is, the probability that all parallel branches in the relay are disconnected is greatly reduced, which is beneficial to ensuring the working stability of the relay, enabling the relay to have good shock resistance and being able to well meet the requirement of mechanical shock resistance. For some application scenarios with bumpy conditions during use (such as being applied in an automobile), this relay has obvious application advantages.

[0019] In some embodiments, the moving contact is an integral structural member, and a slit is formed in the moving contact. The slit divides the moving contact into a plurality of the diversion branches; and / or, the number of the diversion branches on each moving contact is three. The structure of forming the diversion branches on each moving contact is simple and easy to implement. By setting the number of the diversion branches on each moving contact to three, the requirement of ultra-low contact resistance can be met, redundant design can be avoided, and the structural complexity can be reduced.

[0020] In some embodiments, the relay further includes an electromagnetic system and a pushing mechanism. The pushing mechanism is connected between the electromagnetic system and the contact system along the second direction. The pushing mechanism is configured to drive the two moving contact assemblies to act synchronously under the drive of the electromagnetic system. Then, the moving contact unit is switched between the first switch state and the second switch state. Since the pushing mechanism is connected between the electromagnetic system and the contact system along the second direction, the electromagnetic system and the contact system must be arranged along the second direction. The electromagnetic system faces each moving contact assembly along the second direction and can easily establish an assembly relationship with each moving contact assembly and form a linkage, and moreover, it avoids occupying too much space in the first direction, which further helps to realize the miniaturized design of the relay.

[0021] In some embodiments, the coil assembly includes at least two coil windings arranged along the first direction, and the size of the coil winding in the second direction is less than or equal to the size of the coil winding in the first direction. Since the contact system occupies a large space in the first direction, more coil windings are arranged by using the space in the first direction, which improves the space utilization rate in the first direction. With the total number of coil turns unchanged, this design is beneficial to reducing the projected area of the coil assembly on the surface perpendicular to the first direction so as to realize the miniaturization of the relay. Also, since the size of the coil winding in the second direction is less than or equal to the size of the coil winding in the first direction, the coil winding can reduce the space occupied in the second direction and increase the space utilization rate in the first direction, making the layout of the coil winding and the moving contact unit more reasonable in the first direction, which is beneficial to the miniaturization of the relay.

[0022] In some embodiments, the pushing mechanism includes a first group of pushing cards and a second group of pushing cards, the first group of pushing cards and the second group of pushing cards are arranged along the first direction, the first group of pushing cards includes two first pushing cards, the two first pushing cards are respectively connected to the swing ends of the two moving contacts of one of the moving contact components; the second group of pushing cards includes two second pushing cards, the two second pushing cards are respectively connected to the swing ends of the two moving contacts of another moving contact component. In the case where multiple groups of moving contact components arranged in the first direction need to be driven simultaneously, the technical solution of this embodiment avoids the problem of the push cards being too large in size along the first direction due to the use of one group of pushing cards, which makes them easy to deform or break, thereby improving the reliability of the pushing mechanism in pushing such a large contact system.

[0023] In some embodiments, the electromagnetic system includes a coil assembly and an armature assembly, the armature assembly includes a first connecting arm and a second connecting arm, the armature assembly can rotate around a rotating shaft parallel to the first direction based on the change in polarity of the coil assembly, so that the driving end of the first connecting arm and the driving end of the second connecting arm move in opposite directions, and the ends of the two first push cards away from one of the moving contact assemblies are respectively connected to the driving end of the first connecting arm and the driving end of the second connecting arm, and the ends of the two second push cards away from the other moving contact assembly are respectively connected to the driving end of the first connecting arm and the driving end of the second connecting arm. Thus, the rotation of the armature assembly around the rotating shaft is used to drive the two moving contact members in the moving contact assembly to contact or disconnect with each other.

[0024] In some embodiments, the armature assembly is located between the coil assembly and the contact system along the second direction, the first connecting arm and the second connecting arm are located on the side of the armature assembly facing away from the coil assembly along the second direction, and the driving end of the first connecting arm and the driving end of the second connecting arm are respectively located on both sides of the armature assembly along the third direction; the first direction, the second direction and the third direction are perpendicular to each other. Since the armature assembly is located between the coil assembly and the contact system along the second direction, and the first connecting arm and the second connecting arm are located on the side close to the contact system, the arrangement is more compact and the space occupied is small, the length required to be designed for each first push card and each second push card along the second direction is smaller, and the strength is high, which further improves the reliability of each first push card and each second push card in pushing such a large contact system.

[0025] In some embodiments, the first static lead-out component includes two static lead-out pieces arranged along the first direction, namely a first static lead-out piece and a third static lead-out piece, and the second static lead-out component includes two static lead-out pieces arranged along the first direction, namely a second static lead-out piece and a fourth static lead-out piece; in the first switch state, one of the moving contact components disconnects the electrical path between the first static lead-out piece and the second static lead-out piece, and the other moving contact component disconnects the electrical path between the third static lead-out piece and the fourth static lead-out piece; in the second switch state, one of the moving contact components conducts the electrical path between the first static lead-out piece and the second static lead-out piece, and the other moving contact component conducts the electrical path between the third static lead-out piece and the fourth static lead-out piece. In this embodiment, the first static lead-out piece, the third static lead-out piece, the second static lead-out piece, and the fourth static lead-out piece are used to electrically connect the corresponding moving contact components to the circuit outside the relay. Since both the first static lead-out component and the second static lead-out component are divided into two groups, it further provides a basis for setting up independent chambers on the relay housing to improve the bending strength of the side wall of the relay housing.

[0026] In some embodiments, the relay includes a mounting base, the mounting base includes a first mounting cavity and a second mounting cavity arranged along the first direction, the first mounting cavity has a first mounting opening, the second mounting cavity has a second mounting opening, the first mounting opening and the second mounting opening are located at both ends of the mounting base in the first direction, the two moving contact components are respectively a first moving contact component and a second moving contact component, the first moving contact component can be mounted into the first mounting cavity from the first mounting opening, and the second moving contact component can be mounted into the second mounting cavity from the second mounting opening. Since the first mounting opening and the second mounting opening are located at both ends of the mounting base in the first direction, and the first moving contact component and the second moving contact component are respectively mounted into the mounting base from the first mounting opening and the second mounting opening, the installation convenience is improved. Independent grooves can be provided on the side wall of the mounting base at positions corresponding to the first moving contact component and the second moving contact component to meet the requirement of leading out the corresponding static lead-out pieces from the mounting base. Compared with the embodiment in which a single groove is used to integrally arrange the first moving contact component and the second moving contact component, this embodiment arranges the first moving contact component and the second moving contact component by providing independent grooves, which is beneficial to reducing the depth of the grooves to avoid the situation that at least one side of the side wall of the mounting base becomes an isolated and unsupported structure due to the excessive depth of the grooves. Therefore, the structural strength of the side wall of the mounting base can be improved by adopting the solution of this embodiment, and physical isolation and independent stress bearing of different moving contact components can be achieved.

[0027] In some embodiments, the mounting base includes a base body and a first mounting plate, and the first mounting plate is connected to the inner wall of the base body; in the first direction, the first mounting cavity is located on one side of the first mounting plate, and the second mounting cavity is located on the other side of the first mounting plate. In this embodiment, the first mounting plate can play a role in strengthening the structure of the base body, making it not easy for the base body to deform.

[0028] In some embodiments, the relay further includes an electromagnetic system and a pushing mechanism. The pushing mechanism is connected between the electromagnetic system and the contact system along a second direction perpendicular to the first direction. The pushing mechanism is used to drive each of the moving contact assemblies to move synchronously under the drive of the electromagnetic system; the pushing mechanism includes two groups of pushing cards, and the two groups of pushing cards are arranged along the first direction and are respectively connected to each of the moving contact assemblies arranged along the first direction. In this way, the two groups of pushing cards can be used to push the two groups of moving contact assemblies, and since the two groups of pushing cards are arranged along the first direction, it further provides a basis for setting up independent chambers on the relay housing to improve the bending strength of the side wall of the relay housing.

[0029] In some embodiments, the electromagnetic system includes a coil assembly and an armature assembly. The armature assembly is used to move based on the change of the polarity of the coil assembly and drive each of the moving contact assemblies to move synchronously through each group of pushing cards; the electromagnetic system can be installed into the base body from one end of the mounting base along the first direction, thereby reducing the overall assembly complexity of the relay.

[0030] In some embodiments, the mounting base further includes a second mounting plate. The second mounting plate is connected to the first mounting plate, and the second mounting plate divides the space enclosed by the base body into a third mounting cavity. One end of the second mounting plate in the first direction and a part of the side wall of the base body enclose a third mounting opening. In the second direction, both the first mounting cavity and the second mounting cavity are located on one side of the second mounting plate, and the third mounting cavity is located on the other side of the second mounting plate. Both the coil assembly and the armature assembly can be installed into the third mounting cavity from the third mounting opening along the first direction. By providing the third mounting cavity, the electromagnetic system can obtain an independent stress support base. Since the opening direction of the third mounting opening also along the first direction, the installation direction of the electromagnetic system is the same as that of one of the moving contact assemblies, which can simplify the installation process and improve the installation efficiency.

[0031] In some embodiments, the base body includes a side wall portion and a bottom wall portion. The bottom wall portion is connected to the side wall portion and the second mounting plate. A partial structure of the bottom wall portion, the second mounting plate, and the side wall portion together enclose to form the third mounting cavity. Another partial structure of the side wall portion, the first mounting plate, and the second mounting plate enclose to form the first mounting cavity and the second mounting cavity. Among them, the bottom wall portion is parallel to the first mounting plate, and both the coil assembly and the armature assembly are connected to the bottom wall portion. Thereby, the mounting stability of the coil assembly and the armature assembly is improved.

[0032] In some embodiments, the mounting base is provided with a first groove, a second groove, a third groove, and a fourth groove. The first groove and the second groove are respectively located on opposite side walls of the first mounting cavity in the third direction, and both extend along the first direction to one end of the mounting base where the first mounting opening is provided. The third groove and the fourth groove are respectively located on opposite side walls of the second mounting cavity in the third direction, and both extend along the first direction to one end of the mounting base where the second mounting opening is provided. Among them, the third direction is perpendicular to the first direction and the second direction, and the first static lead-out piece, the second static lead-out piece, the third static lead-out piece, and the fourth static lead-out piece are correspondingly inserted into the first groove, the second groove, the third groove, and the fourth groove. In this embodiment, the grooves are used to meet the need for the corresponding static lead-out pieces to be led out from the mounting base.

[0033] In some embodiments, at the inner wall corresponding to the mounting base, the notch depths of the first groove and the second groove communicating with the first mounting cavity are both less than or equal to 1 / 3 of the depth of the first mounting cavity. The notch depths of the third groove and the fourth groove communicating with the second mounting cavity are both less than or equal to 1 / 3 of the depth of the second mounting cavity. By this setting, the two side walls of the mounting base in the third direction are not divided into at least two relatively independent parts, so that the two side walls in the third direction can maintain good structural strength and are not easily deformed. In addition, it can also prevent the side wall of the relay housing from losing connection with other parts due to the grooves, and avoid deformation of the side wall of the relay housing caused by the inability to withstand the contact pressure when the moving contact and the static contact are in contact.

[0034] In some embodiments, the lead-out unit further includes a first external lead-out member and a second external lead-out member. The first static lead-out piece and the third static lead-out piece both extend out of a side wall of the mounting base along the third direction, and are connected to each other through the first external lead-out member; the second static lead-out piece and the fourth static lead-out piece both extend out of the other side wall of the mounting base along the third direction, and are connected to each other through the second external lead-out member. In this way, the first moving contact assembly and the second moving contact assembly are connected in parallel.

[0035] In some embodiments, the first static lead-out piece, the second static lead-out piece, the third static lead-out piece, and the fourth static lead-out piece all have bending portions, and connection terminals are led out to the side where the outer wall surface of the mounting base is located along the second direction through their respective bending portions. All the connection terminals are arranged in the same plane parallel to both the first direction and the third direction. Thereby, the arrangement of the static lead-out pieces in the relay is compact, reducing the size occupation of the relay along the third direction or the first direction, which is beneficial to the miniaturization of the relay and makes it easier to adapt to a limited installation space, such as the narrow battery compartment space in an automobile; in addition, it is also beneficial to support the compact side-by-side installation of multiple relays.

[0036] In some embodiments, all the connection terminals are located outside the outer wall surface of the mounting base that is closer to the contact system in the second direction; and / or, shielding walls are respectively provided on two side walls of the mounting base in the third direction, and each shielding wall correspondingly shields each bending portion.

[0037] Since all the connection terminals are located outside the outer wall surface of the mounting base that is closer to the contact system in the second direction, the distance from each connection terminal to the moving contact unit in the contact system is small. In this way, the conductive material consumed by each static lead-out piece for leading out the connection terminal outside the mounting base can be reduced, thereby reducing the cost.

[0038] Since shielding walls are respectively provided on two side walls of the mounting base in the third direction, and each shielding wall correspondingly shields each bending portion, the overall appearance aesthetic of the relay is improved by using each shielding wall to shield the corresponding bending portion.

[0039] In some embodiments, the contact system includes at least two of the moving contact units and at least two of the lead-out units respectively corresponding to the moving contact units. Each of the moving contact units is arranged along a second direction. When each of the moving contact units is in the first switch state, it is respectively electrically connected in cooperation with the adjacent moving contact unit, so that among the two lead-out units respectively corresponding to two adjacent moving contact units, two static lead-out pieces of a first static lead-out assembly in one of the lead-out units are correspondingly connected in series with two static lead-out pieces of a second static lead-out assembly in the other lead-out unit. When each of the moving contact units is in the second switch state, each of the lead-out units is arranged to be open-circuited; all connection terminals of the two lead-out units are located outside an outer wall surface of the mounting base closer to the contact system in the second direction; connection terminals of the first static lead-out piece and the third static lead-out piece of one of the lead-out units are arranged between connection terminals of the first static lead-out piece and the third static lead-out piece of the other lead-out unit along the first direction, and connection terminals of the second static lead-out piece and the fourth static lead-out piece of one of the lead-out units are arranged between connection terminals of the second static lead-out piece and the fourth static lead-out piece of the other lead-out unit along the first direction. In this embodiment, the contact system can perform series-parallel switching to adapt to some special usage scenarios, such as being applied to a battery management system of an automobile to optimize the charge and discharge functions of a battery pack. With this structure, two connection terminals for the same end of at least one set of circuits for connecting the circuit can be arranged adjacent to each other, which facilitates subsequent circuit connection and insulation design between connection terminals for connecting different load terminals.

[0040] In some embodiments, the number of both the moving contact units and the lead-out units is two. This contact system can be used to meet the series-parallel switching requirements of two circuit units (such as two automobile battery packs).

[0041] In some embodiments, connection terminals of the first static lead-out piece and the third static lead-out piece located in the middle along the first direction are used to form a series connection with connection terminals of the second static lead-out piece and the fourth static lead-out piece located in the middle along the first direction when in the first switch state. By arranging the connection terminals for series connection adjacent to each other, in application, the wire length between two series-connected circuit units can be shortened, the line resistance can be reduced, and the energy loss can be reduced, especially in high-current scenarios; in addition, it can also avoid current deviation caused by uneven line impedances on both sides and improve the balance of the two circuit units; the middle connection terminals are used to achieve the series connection function, and the connection terminals on both sides are used for parallel connection, which helps to flexibly adapt to possible future expansion requirements, such as the expansion requirements of a battery module.

[0042] In some embodiments, the relay includes a first spacer, a second spacer, a third spacer, and a fourth spacer; wherein, the first spacer is connected to one of the two first static lead-out pieces and electrically isolates the two first static lead-out pieces; the second spacer is connected to one of the two second static lead-out pieces and electrically isolates the two second static lead-out pieces; the third spacer is connected to one of the two third static lead-out pieces and electrically isolates the two third static lead-out pieces; the fourth spacer is connected to one of the two fourth static lead-out pieces and electrically isolates the two fourth static lead-out pieces. In this embodiment, the creepage distance between the connection terminals of the two terminals for externally connecting the circuit is increased at the corresponding positions by using the first spacer, the second spacer, the third spacer, and the fourth spacer, thereby improving the reliability of the relay performance.

[0043] In some embodiments, the first spacer includes a first blocking wall and a second blocking wall. The first blocking wall is located between the outer wall surface of the mounting base and the connection terminal of one of the first static lead-out pieces. The second blocking wall is connected to the first blocking wall, and the second blocking wall is located between the connection terminals of the two first static lead-out pieces along the first direction. In this embodiment, the creepage distance between the connection terminals of the two first static lead-out pieces is increased under the shielding of the first blocking wall and the second blocking wall.

[0044] In some embodiments, the first spacer further includes a third blocking wall. The third blocking wall is connected to the inner sides of the first blocking wall and the second blocking wall in the third direction, and the first blocking wall, the second blocking wall, and the third blocking wall are connected together and jointly enclose a first receiving groove with a first opening. The connection terminal of one of the first static lead-out pieces is received in the first receiving groove and is exposed from the first opening to the outside of the first spacer. In this embodiment, due to the setting of the third blocking wall, the creepage distance of the inner sides of the connection terminals of the two first static lead-out pieces in the first direction can be increased, avoiding current breakdown at the corner positions of the two connection terminals; by providing the first opening, the connection terminal at the first receiving groove can be reliably externally connected.

[0045] In some embodiments, the second spacer includes a fourth blocking wall and a fifth blocking wall. The fourth blocking wall is located between the outer wall surface of the mounting base and the connection terminal of one of the second static lead-out pieces. The fifth blocking wall is connected to the fourth blocking wall, and the fifth blocking wall is located between the connection terminals of the two second static lead-out pieces along the first direction. In this way, the creepage distance between the connection terminals of the two second static lead-out pieces is increased in the first direction.

[0046] In some embodiments, the second spacer further includes a sixth partition wall. The sixth partition wall is connected to the inner sides of the fourth partition wall and the fifth partition wall in the third direction. The fourth partition wall, the fifth partition wall and the sixth partition wall are connected to each other and jointly enclose a second receiving groove with a second opening. The connection terminal of one of the second static lead-out pieces is received in the second receiving groove and exposed from the second opening to the outside of the second spacer. In this embodiment, due to the provision of the sixth partition wall, the creepage distance of the inner sides of the connection terminals of the two second static lead-out pieces in the first direction can be increased, avoiding current breakdown at the corner positions of the two connection terminals; by providing the second opening, the connection terminals at the second receiving groove can be reliably connected to the outside.

[0047] In some embodiments, at least one of the following technical solutions is further included: the first spacer and the third spacer are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane; or, the second spacer and the fourth spacer are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane; or, the first static lead-out piece and the third static lead-out piece located in the same lead-out unit are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane; or, the second static lead-out piece and the fourth static lead-out piece located in the same lead-out unit are mirror-symmetric structures with a plane perpendicular to the first direction as the symmetry plane. Through the above design, it is beneficial to simplify the structure, so that at least some of the static lead-out pieces can be shared to save production costs. In addition, the current-carrying capacity of each static lead-out piece can be ensured to be balanced.

[0048] In some embodiments, the relay further includes two mounting covers; the two mounting covers are respectively fixedly connected to both ends of the mounting base in the first direction and form a relay housing with the mounting base, covering and sealing the first mounting opening and the second mounting opening. The first spacer, the second spacer, the third spacer and the fourth spacer are all provided with clamping parts. The clamping parts are used for connecting with the corresponding bending parts, and the clamping parts are in limit fit with the relay housing and / or the corresponding lead-out unit in the first direction, the second direction and the third direction, thereby improving the installation stability of the corresponding spacer. Description of the Drawings

[0049] Figure 1 It is a schematic diagram of the internal structure of a relay in an embodiment of the present application.

[0050] Figure 2 It is Figure 1 an exploded schematic diagram of a part of the shown relay.

[0051] Figure 3 It is Figure 2Bottom view of the partial structure of the contact system of the shown relay.

[0052] Figure 4 Schematic diagram of the structure of the moving contact part of the contact system in a relay according to an embodiment of the present application.

[0053] Figure 5 Schematic diagram of the structure when the electromagnetic system and the contact system are assembled into the mounting base in a relay according to an embodiment of the present application.

[0054] Figure 6 For Figure 5 Top view schematic diagram of the shown relay.

[0055] Figure 7 In a relay according to an embodiment of the present application along Figure 6 Schematic cross-sectional structure diagram along line I-I in

[0056] Figure 8 Schematic diagram of the structure of the mounting base of the relay according to an embodiment of the present application.

[0057] Figure 9 For Figure 8 Schematic diagram of the structure of another perspective of the mounting base of the shown relay.

[0058] Figure 10 Schematic diagram of the structure when the electromagnetic system and the contact system are assembled into the mounting base in a relay according to another embodiment of the present application.

[0059] Figure 11 For Figure 10 Schematic diagram of the structure of the contact system of the shown relay.

[0060] Figure 12 For Figure 11 Top view schematic diagram of the partial structure of the shown relay.

[0061] Figure 13 For Figure 10 Schematic diagram of the structure of the mounting base of the shown relay

[0062] Figure 14 Schematic diagram of the structure in the contact system of a relay according to an embodiment of the present application, where a first spacer is provided between two first static lead-out pieces.

[0063] Figure 15 For Figure 14 Exploded view schematic diagram of the first static lead-out piece and the first spacer in the contact system of the shown relay.

[0064] Figure 16 Schematic diagram of the structure in the contact system of a relay according to an embodiment of the present application, where a first spacer is provided between two second static lead-out pieces.

[0065] Figure 17 In Figure 16 the contact system of the relay shown, a schematic exploded view of the second static lead piece and the second spacer.

[0066] Figure 18 A schematic perspective view of the relay in another embodiment of the present application.

[0067] Figure 19 A schematic top view of the internal structure of the relay in another embodiment of the present application.

[0068] Figure 20 A schematic perspective view of the internal structure of the relay in another embodiment of the present application.

[0069] Figure 21 A schematic view of the structure of the mounting base of the relay in an embodiment of the present application.

[0070] Reference numerals:

[0071] 10. Contact system; 10a. Lead-out unit; 11. First static lead-out component; 12. Second static lead-out component; 111. First static lead-out piece; 111a. First bending portion; 111b. First connection terminal; 112. Second static lead-out piece; 112a. Second bending portion; 112b. Second connection terminal; 113. Third static lead-out piece; 113a. Third bending portion; 113b. Third connection terminal; 114. Fourth static lead-out piece; 114a. Fourth bending portion; 114b. Fourth connection terminal; 10a1. First external lead-out member; 10a2. Second external lead-out member; 10a3. Third external lead-out member; 10a4. Fourth external lead-out member; P1. First static lead-out piece; P2. Second static lead-out piece; P3. Third static lead-out piece; P4. Fourth static lead-out piece; P5. Fifth static lead-out piece; P6. Sixth static lead-out piece; P7. Seventh static lead-out piece; P8. Eighth static lead-out piece; D1. First terminal; D2. Second terminal; D3. Third terminal; D4. Fourth terminal; D5. Fifth terminal; D6. Sixth terminal; D7. Seventh terminal; D8. Eighth terminal; 10b. Moving contact unit; 13. Moving contact component; 13a. Moving contact piece; A. First contact piece; B. Second contact piece; 13a1. Fixed end; 13a2. Swing end; 13a3. Current diversion branch; 13a4. Gap; 13b. Static contact point; 13c. Moving contact point; 131. First moving contact component; 1311. First moving contact piece; 132. Second moving contact component; 1321. Second moving contact piece; 101. First moving contact unit; 102. Second moving contact unit; 103. First lead-out unit; 104. Second lead-out unit; 20. Electromagnetic system; 21. Coil assembly; 211. Coil winding; 22. Armature assembly; 221. First connecting arm; 222. Second connecting arm; 22a. Rotating shaft; 30. Mounting seat; 30a. First end face; 30b. Second end face; 30c. Inner wall surface; 30d. Outer wall surface; 30e. Stop wall; 301. First mounting cavity; 3011. Second positioning buckle; 302. Second mounting cavity; 3021. Third positioning buckle; 303. Third mounting cavity; 31. Seat main body; 311. Side wall portion; 311a. First side wall; 311b. Second side wall; 311c. Third side wall; 311d. Fourth side wall; 312. Bottom wall portion; 32. First mounting plate; 33. Second mounting plate; 331. First positioning buckle; C1. First groove; C11. Inner notch of the first groove; C12. Outer notch of the first groove; C2. Second groove; C21. Inner notch of the second groove; C22. Outer notch of the second groove; C3. Third groove; C31. Inner notch of the third groove; C32. Outer notch of the third groove; C4. Fourth groove; C41. Inner notch of the fourth groove; C42. Outer notch of the fourth groove; ST. Limit matching portion; 40. Pushing mechanism; 41. First group of pushing cards; 411. First pushing card; 42. Second group of pushing cards; 421. Second pushing card; 50. First isolating member; 50a. First receiving groove;51. First stop wall; 52. Second stop wall; 53. Third stop wall; 60. Second separator; 60a. Second receiving groove; 61. Fourth stop wall; 62. Fifth stop wall; 63. Sixth stop wall; 70. Third separator; 80. Fourth separator; S. Clamping part; SC. Clamping groove; Detailed implementation manners

[0072] To make the above objects, features, and advantages of the present application more apparent and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0073] In the description of the present application, it should be understood that if terms such as "top", "bottom", "inner", "outer", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0074] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0075] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0076] Combined Figure 1 and Figure 2 As shown, the present application provides a relay, including an electromagnetic system 20 and a contact system 10. Among them, the electromagnetic system 20 generates an electromagnetic force when current is applied to drive the contact system 10 to switch the on-off state, so as to realize conducting or disconnecting the circuit.

[0077] In some embodiments, the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22. The armature assembly 22 is capable of moving based on the change in the polarity of the coil assembly 21. It should be noted that the armature assembly 22 can be a direct-push armature assembly 22 or a rotary armature assembly 22. Among them, the direct-push armature assembly 22 achieves the state switching of the contact system 10 in a linear motion manner, and the rotary armature assembly 22 achieves the state switching of the contact system 10 in a rotational or swinging manner. In the embodiments of the present application, the type of the armature assembly 22 is not limited herein.

[0078] Combined with Figure 2 and Figure 3 As shown, the contact system 10 includes a lead-out unit 10a and a moving contact unit 10b. The lead-out unit 10a includes a first static lead-out component 11 and a second static lead-out component 12. The first static lead-out component 11 and the second static lead-out component 12 can be understood as a current input terminal group and a current output terminal group to meet the needs of current input and output to the moving contact unit 10b. It should be noted here that one moving contact unit 10b corresponds to one lead-out unit 10a, that is, the lead-out unit 10a and the moving contact unit 10b are arranged in a matching manner, so that the first static lead-out component 11 and the second static lead-out component 12 serve as the current input end and the current output end respectively.

[0079] The moving contact unit 10b includes a plurality of moving contact components 13. The plurality of moving contact components 13 are arranged along a first direction (such as Figure 2 the X direction in

[0080] For the sake of easy understanding, take the Figure 2 shown contact system 10 as an example. In the Figure 2 shown contact system 10, the moving contact unit 10b includes two moving contact components 13 arranged along the first direction.

[0081] For the sake of easy description, in some places hereinafter, the two moving contact components 13 will be respectively referred to as the "first moving contact component 131" and the "second moving contact component 132". It can be understood that the number of the moving contact components 13 in the moving contact unit 10b is not limited to 2. In some embodiments, the number of the moving contact components 13 in the moving contact unit 10b can be 3 or more, and the number of the moving contact components 13 in the moving contact unit 10b is not limited herein.

[0082] The moving contact unit 10b is configured to be capable of switching between a first switch state and a second switch state. Among them, in the first switch state, the plurality of moving contact components 13 all disconnect the electrical path between the first static lead-out component 11 and the second static lead-out component 12; in the second switch state, the plurality of moving contact components 13 are connected in parallel with each other and all conduct the electrical path between the first static lead-out component 11 and the second static lead-out component 12.

[0083] For the contact system 10, the contact and disconnection actions of the moving contact assembly 13 are the basis for the contact system 10 to achieve switch control. Therefore, the switching of the moving contact unit 10b between the first switch state and the second switch state can be understood as multiple moving contact assemblies 13 jointly disconnecting or jointly conducting the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12.

[0084] It should be noted that jointly conducting and jointly disconnecting illustrate the consistency of each moving contact assembly 13 in achieving the switch actions of conducting or disconnecting the circuit. That is to say, when the moving contact unit 10b switches from the first switch state to the second switch state, all the moving contact assemblies 13 switch the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12 from being disconnected to being conducted. Correspondingly, when the moving contact unit 10b switches from the second switch state to the first switch state, all the moving contact assemblies 13 switch the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12 from being conducted to being disconnected.

[0085] Since in the second switch state, multiple moving contact assemblies 13 all conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, and the multiple moving contact assemblies 13 are connected in parallel with each other, it is beneficial to reduce the contact resistance.

[0086] Since multiple moving contact assemblies 13 are arranged along the first direction, therefore, the multiple moving contact assemblies 13 are arranged in a parallel structure in the first direction. In some embodiments, at least one moving contact assembly 13 arranges at least two parallel branches in a plane intersecting the first direction, thereby realizing the expansion of the parallel structure by using the plane intersecting the first direction. In this way, the relay of the embodiment of the present application realizes the setting of the parallel structure in two spatial dimensions, which can not only increase the number of parallel paths, but also avoid the parallel structure occupying too large a volume in a certain direction, resulting in an overly large volume of the relay. Therefore, the relay of the present application realizes miniaturization while taking into account the reduction of the contact resistance, so as to meet the usage requirements.

[0087] It should be noted that in combination with Figure 2 and Figure 3As shown, the first moving contact component 131 and the second moving contact component 132 are arranged with moving contacts 13b and static contacts 13c opposite to each other in the second direction. In the second switching state, the moving contact 13b is in electrical contact with the corresponding moving contact 13c, thereby conducting the electrical path between the first static lead-out component 11 and the second static lead-out component 12. Since the number of moving contact components 13 is increased in the embodiment of the present application, the contact system in the relay is not easily disconnected due to jitter, that is, the probability that all the moving contacts 13b and static contacts 13c of the relay are disconnected is greatly reduced, which is conducive to ensuring the working stability of the relay, so that the relay has good impact resistance and can well meet the requirements of mechanical impact resistance. For certain application scenarios where there are bumps during use (such as application in automobiles), the relay has obvious advantages in use. In addition, under this structural setting, when the relay is working in a low-temperature environment, if some parallel branches are frozen and disconnected due to the low temperature, the current flowing through the parallel branches that have not been disconnected will increase and generate heat, allowing the frozen parallel branches to melt and become conductive again. The relay has a strong ability to resist non-conduction at low temperatures and is more adaptable to the environment.

[0088] It should be noted that, in an embodiment in which 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 move synchronously, that is, to simultaneously open 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 switching state and the second switching state.

[0089] In an embodiment where the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22 , the plurality of movable contact assemblies 13 can be driven by the armature assembly 22 to move synchronously and switch the movable contact unit 10 b between the first switching state and the second switching state.

[0090] In some embodiments, in the same moving contact assembly 13, at least one parallel branch is connected to another parallel branch along the second direction (eg Figure 2 The second direction is arranged in the Y direction, and the second direction intersects with the first direction.

[0091] It should be noted here that as long as the second direction is not the same direction as the first direction and is not the opposite direction, it can be considered that the second direction intersects the first direction.

[0092] Since at least one parallel branch is arranged along the second direction with another parallel branch, the moving contact unit 10b expands the parallel structure in the first direction and the second direction at the same time, which is conducive to reducing the contact resistance and avoiding the parallel structure occupying too much volume in a certain direction, resulting in an excessively large volume of the relay. Therefore, the relay of the present application achieves miniaturization while taking into account the reduction of contact resistance, so as to meet the use requirements.

[0093] Since the parallel branches are arranged along the second direction without crossing, each parallel branch can freely adjust its volume as needed. For example, to adapt to high-voltage or high-current scenarios, the volume can be appropriately increased to obtain greater current-carrying capacity.

[0094] In the embodiments of the present application, the number of parallel branches is not limited herein. The number of parallel branches in the first direction and the second direction can be set as needed so that the total contact resistance of the contact system can meet the requirements, thereby reducing heat generation and lowering the temperature rise.

[0095] In some embodiments, the angle between the second direction and the first direction can be 30° to 120°, specifically 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110° or 120°. It can be understood that when the angle between the second direction and the first direction is 90°, the second direction and the first direction are two orthogonal (i.e., perpendicular to each other) directions.

[0096] In some embodiments, the second direction is perpendicular to the first direction. In this way, the parallel branches can be arranged in two mutually perpendicular dimensions. This structure is beneficial for the moving contact assembly 13 to improve the utilization rate of the assembly space in the relay, so that the overall shape of the relay can be made more square (for example, except for the necessary lead-out end part structure, the overall appearance of the relay can be a cube), realizing miniaturization.

[0097] Combined with Figure 3 As shown, the moving contact assembly 13 (such as the second moving contact assembly 132) includes two moving contacts 13a, and the two moving contacts 13a are arranged along the second direction perpendicular to the first direction.

[0098] In some embodiments, the length direction of the moving contact 13a is parallel to the third direction (such as Figure 2 the Z direction in). It is set that both the second direction and the third direction are perpendicular to the first direction, then the two moving contacts 13a of the moving contact assembly 13 are arranged in the same plane parallel to both the second direction and the third direction. In this way, when the two moving contacts 13a are in contact with each other to form a parallel structure, each moving contact 13a can constitute a parallel branch. Therefore, the two moving contacts 13a are arranged in a plane intersecting the first direction, which means that at least two parallel branches can be formed in this plane.

[0099] Continuing to combine Figure 2 and Figure 3 As shown, the moving contact 13a has a fixed end 13a1 and a swinging end 13a2. The fixed end 13a1 of one moving contact 13a is fixed to the first static lead-out assembly 11, and the fixed end 13a1 of the other moving contact 13a is fixed to the second static lead-out assembly 12.

[0100] Among the two moving contact pieces 13a of the same moving contact assembly 13, when the two swinging ends 13a2 are in electrical contact with the fixed end 13a1 of the other moving contact piece 13a along the second direction respectively, both of the two moving contact pieces 13a form a parallel branch to conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, and then the moving contact unit 10b is switched to the second switch state.

[0101] Correspondingly, when both of the two swinging ends 13a2 move away from the fixed end 13a1 of the other moving contact piece 13a along the second direction, both of the two moving contact pieces 13a disconnect the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, and then the moving contact unit 10b is switched to the first switch state.

[0102] In this embodiment, on the one hand, the two moving contact pieces 13a are arranged along the second direction perpendicular to the first direction. On the other hand, the two moving contact pieces 13a are in contact with each other to form a parallel branch to conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12, so that the contact resistance can be reduced, and the parallel structure is expanded in two spatial dimensions of the first direction and the second direction, which is beneficial to miniaturization. Both of the two moving contact pieces 13a adopt swinging moving springs with fixed ends 13a1 and swinging ends 13a2, which not only realizes the construction of a parallel structure with a simple structure, but also can utilize the electromagnetic force generated by each other when they conduct current to increase their contact pressure and the ability to resist high fault currents.

[0103] It should be noted that there are various possibilities for the contact or disconnection actions between the two moving contact pieces 13a in the moving contact assembly 13.

[0104] For example, as shown in Figure 3 , in some embodiments, the moving contact assembly 13 is configured such that when switching between the first switch state and the second switch state, the two moving contact pieces 13a of the moving contact assembly 13 move in opposite directions. The "move in opposite directions" mentioned here and the "move in the same direction" mentioned below are both relative to the moving direction of the corresponding static contact 13b (which will be described in detail below). In this embodiment, it can be regarded as whether the moving directions in the second direction are opposite or the same.

[0105] For the sake of convenience of description, the switching actions of the moving contact assembly 13 will be described below by taking the two moving contact pieces 13a (hereinafter referred to as "first contact piece A" and "second contact piece B" respectively) located in the second moving contact assembly 132 in Figure 3 as an example, but it does not mean that the switching actions of the moving contact assembly 13 are limited thereto.

[0106] As shown in Figure 3 , Figure 3The state in which the first contact A and the second contact B are separated from each other is shown. At this time, since the first contact A and the second contact B are separated from each other, the electrical connection between the first static lead-out component 11 and the second static lead-out component 12 is broken (i.e., no current flows), and thus it is in the first switch state.

[0107] The swinging 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 swinging end 13a2 of the second contact B can contact or separate from the fixed end 13a1 of the first contact A by swinging.

[0108] From Figure 3 this perspective, during the process of switching from the first switch state to the second switch state, the swinging end 13a2 of the first contact A swings clockwise relative to the fixed end 13a1 of the first contact A, and finally the moving contact 13c on the swinging end 13a2 of the first contact A contacts the static contact 13b on the fixed end 13a1 of the second contact B; correspondingly, the swinging end 13a2 of the second contact B also swings clockwise relative to the fixed end 13a1 of the second contact A, and finally the moving contact 13c on the swinging end 13a2 of the second contact B contacts the static contact 13b on the fixed end 13a1 of the first contact A, thereby conducting the electrical path between the first static lead-out component 11 and the second static lead-out component 12, that is, making the moving contact component 13 in the second switch state.

[0109] 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 positions or structures of the first contact A and the second contact B, the two moving contacts 13a move in the same direction to achieve the switching between the first switch state and the second switch state. That is, the moving contact component 13 is configured such that when switching from the first switch state to the second switch state, the swinging ends 13a2 of the two moving contacts 13a of the moving contact component 13 move in the same direction; and when switching from the second switch state to the first switch state, the swinging ends 13a2 of the two moving contacts 13a of the moving contact component 13 also move in the same direction. The structural setting between the two moving contacts 13a of the moving contact component 13 is not limited herein.

[0110] In some embodiments, the first static lead-out component 11 and the second static lead-out component 12 are respectively disposed on both sides of the moving contact unit 10b along the third direction. The moving contact component 13 has a moving direction, and the moving direction of the moving contact component 13 can be understood as the direction parallel to the tangent direction corresponding to the swinging end 13a2 of the moving contact piece 13a in the undeformed or slightly deformed natural state, or can also be understood as the direction of the normal at the contact position of the static contact point 13b corresponding to the swinging end 13a2. In this embodiment, the moving direction of the moving contact component 13 is parallel to the second direction, that is to say, when the moving contact component 13 switches from the first switch state to the second switch state, at the moment when the moving contact piece 13a in the natural state is deformed, the moving direction of the swinging end 13a2 is parallel to the second direction.

[0111] The first direction, the second direction, and the third direction are perpendicular to each other pairwise. Under this structural arrangement, the moving contact pieces 13a in the moving contact unit 10b are arranged compactly to reduce space waste, which is beneficial to achieving miniaturization. Since the moving direction of the moving contact component 13 is parallel to the second direction, the two parallel branches in the same moving contact component 13 can be connected in parallel by contacting each other, thus avoiding the need for each parallel branch to contact or disconnect from the first static lead-out component 11 and the second static lead-out component 12 respectively, reducing the area and material consumption of the first static lead-out component 11 and the second static lead-out component 12, and further facilitating the miniaturization of the relay.

[0112] Continuing with reference to Figure 3 As shown, the fixed end 13a1 of the moving contact piece 13a is provided with a static contact point 13b, and the swinging end 13a2 of the moving contact piece 13a is provided with a moving contact point 13c. The static contact point 13b and the moving contact point 13c of one moving contact piece 13a respectively correspond to the moving contact point 13c and the static contact point 13b of another moving contact piece 13a. Among the two moving contact pieces 13a of the same moving contact component 13, the two moving contact points 13c can be driven by the corresponding swinging ends 13a2 to contact or separate from the corresponding static contact points 13b. In this way, the contact reliability between the two moving contact pieces 13a can be improved by using the moving contact point 13c and the static contact point 13b.

[0113] It should be noted that the static contact point 13b and the moving contact point 13c can be directly provided on the moving contact piece 13a or indirectly connected to the moving contact piece 13a. Taking the static contact point 13b as an example, whether the static contact point 13b is directly provided on the fixed end 13a1 of the moving contact piece 13a or indirectly connected to the fixed end 13a1 of the moving contact piece 13a, it can be understood that the fixed end 13a1 of the moving contact piece 13a is provided with a static contact point 13b. For example, in some embodiments, the fixed end 13a1 of the moving contact piece 13a is connected to the first static lead-out component 11, and the first static lead-out component 11 is connected with a static contact point 13b, which can be understood that the fixed end 13a1 of the moving contact piece 13a is provided with a static contact point 13b.

[0114] Combined with Figure 2 and Figure 4 As shown, in some embodiments, in at least one moving contact component 13, both moving contacts 13a include a plurality of diversion branches 13a3, and the diversion branches 13a3 on the two moving contacts 13a correspond one by one. The plurality of diversion branches 13a3 of the moving contact 13a are arranged in a first direction, and are configured to be connected in parallel when the first static lead-out component 11 and the second static lead-out component 12 are electrically connected, and are respectively connected in parallel with the respective diversion branches 13a3 on the other moving contact 13a. That is to say, since the arrangement direction of the plurality of diversion branches 13a3 and the arrangement direction of the plurality of moving contact components 13 are both the first direction, with such a setting, the moving contact unit 10b can not only use the plurality of moving contact components 13 to expand the parallel branches in the first direction, but also use the plurality of diversion branches 13a3 to expand the parallel branches inside the moving contact component 13 in the first direction, which is beneficial to reducing the contact resistance.

[0115] It should be noted that the diversion branch 13a3 can extend from the fixed end 13a1 of the moving contact 13a to the swinging end 13a2, or can be a part of the structure between the fixed end 13a1 and the swinging end 13a2 of the moving contact 13a.

[0116] Continuing to combine with Figure 4 As shown, the moving contact 13a is an integral structural member, and the moving contact 13a is provided with a slit 13a4, and the slit 13a4 divides the moving contact 13a into a plurality of diversion branches 13a3. This structure of dividing the moving contact 13a into a plurality of diversion branches 13a3 by the slit 13a4 is simple and easy to implement.

[0117] The number of the diversion branches 13a3 can be 2 or more, and the number of the diversion branches 13a3 is not limited herein.

[0118] It should be noted that the slit 13a4 can extend from the fixed end 13a1 to the swinging end 13a2, that is, the slit 13a4 divides the swinging end 13a2 of the moving contact 13a into a plurality of sub-parts, and each sub-part is equivalent to a diversion branch 13a3. At this time, the diversion branch 13a3 extends from the fixed end 13a1 of the moving contact 13a to the swinging end 13a2, and then the plurality of diversion branches 13a3 divided by the slit 13a4 each have a corresponding swinging end 13a2. Therefore, the swinging ends 13a2 of the respective diversion branches 13a3 are separated from each other. Compared with the swinging end 13a2 of the moving contact 13a being connected as a whole, this separation of the swinging ends 13a2 of the respective diversion branches 13a3 is beneficial to reducing the driving force when driving the swinging end 13a2 to swing, making the switching action of the moving contact component 13 between the first switching state and the second switching state more flexible and reliable.

[0119] In addition, each diversion branch 13a3 has a certain degree of independence, such that the restraint force generated between the diversion branches 13a3 when they swing is small, thus avoiding leaving their respective corresponding stationary contacts 13c simultaneously due to vibration. In this way, such a moving contact 13a further helps to reduce the probability that all the moving contacts 13b are disconnected from the corresponding stationary contacts 13c due to vibration, improving the shock resistance performance of the relay.

[0120] The partition gap 13a4 can also be used to divide a part of the structure of the moving contact 13a between the fixed end 13a1 and the swinging end 13a2, that is, the partition gap 13a4 does not extend to the swinging end 13a2. In this way, each diversion 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 swinging end 13a2. Thus, the swinging end 13a2 and the fixed end 13a1 of the moving contact 13a are electrically connected through multiple parallel diversion branches 13a3. In this way, when the moving contact assembly 13 is in the second switching state, two moving contact assemblies 13 are arranged in parallel, two moving contacts 13a in the moving contact assembly 13 are arranged in parallel, and multiple diversion branches 13a3 in the moving contact 13a are arranged in parallel. By using these parallel diversion branches 13a3, the parallel structure in the moving contact unit 10b is further expanded to help reduce the contact resistance.

[0121] As Figure 4 shown, the number of diversion branches 13a3 on each moving contact 13a is three, so that the moving contact 13a can form three parallel branches using the three diversion branches 13a3. By setting the number of diversion branches 13a3 on each moving contact 13a to three, the requirement of ultra-low contact resistance can be met, redundant design can be avoided, and the structural complexity can be reduced.

[0122] For the moving contact assembly 13, if both of the two moving contacts 13a of the moving contact assembly 13 are each provided with three diversion 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, the moving contact unit 10b includes twelve parallel branches, thus helping to reduce the total contact resistance 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 0.05 mΩ.

[0123] Continuing with reference to Figure 4 shown, at the fixed end 13a1 of the moving contact 13a, a stationary contact 13b is provided corresponding to each diversion branch 13a3, and a moving contact 13c is provided at the corresponding swinging end 13a2 of each diversion branch 13a3.

[0124] To further illustrate the structure of the contact system 10, the structure of the relay will be described below by taking the moving contact unit 10b including two moving contact components 13 as an example, but it does not mean that in the relay, the number and arrangement mode of the moving contact components 13 are limited thereto.

[0125] Refer again to Figure 2 As shown, the moving contact unit 10b includes two moving contact components 13, namely the first moving contact component 131 and the second moving contact component 132. The number of moving contact pieces 13a of each moving contact component 13 and the number of diversion branches 13a3 in the moving contact piece 13a may be equal or unequal, and the specific shapes or dimensions of the moving contact pieces 13a may also be different. No specific limitation is made here, as long as the first moving contact component 131 and the second moving contact component 132 as a whole conform to the foregoing description of the moving contact component 13.

[0126] Combined with Figure 2 and Figure 3 As shown, for the convenience of description, the moving contact piece 13a in the first moving contact component 131 is named "the first moving contact piece 1311", and the moving contact piece 13a in the second moving contact component 132 is named "the second moving contact piece 1321".

[0127] One of the first moving contact pieces 1311 and one of the second moving contact pieces 1321 are arranged along the first direction, and the other first moving contact piece 1311 and the other second moving contact piece 1321 are arranged along the first direction. Under this structural arrangement, each first moving contact piece 1311 and each second moving contact piece 1321 are neatly arranged in the first direction and the second direction, which is beneficial to improving the arrangement compactness between the structural components, reducing the waste of the arrangement space, so as to reduce the occupied space of the moving contact unit 10b in the relay, and thus is beneficial to realizing the miniaturization of the relay.

[0128] The structure of the first moving contact piece 1311 may be the same as or different from the structure of the second moving contact piece 1321. Regarding the structures of the first moving contact piece 1311 and the second moving contact piece 1321, reference can be made to the foregoing description of the moving contact piece 13a, and it will not be elaborated here. For example, in the embodiment where the moving contact piece 13a includes multiple diversion branches 13a3, for the first moving contact component 131 and the second moving contact component 132, the corresponding first moving contact piece 1311 and second moving contact piece 1321 may also adopt this structural arrangement including multiple diversion branches 13a3.

[0129] In some embodiments, both the first moving contact piece 1311 and the second moving contact piece 1321 include multiple diversion branches 13a3, and the number of diversion branches 13a3 on the first moving contact piece 1311 and the second moving contact piece 1321 is equal and arranged in one-to-one correspondence.

[0130] For the convenience of description, the diversion branch 13a3 in the first moving contact 1311 is referred to as the "first diversion branch", and the diversion branch 13a3 in the second moving contact 1321 is referred to as the "second diversion branch".

[0131] The number of the first diversion branches can be two or more, and the number of the second diversion branches can be two or more. The number of the first diversion branches and the number of the second diversion branches are not limited herein.

[0132] For the convenience of understanding, hereinafter, take Figure 1 and Figure 2 the contact system 10 of the relay shown as an example. Figure 2 In the contact system 10 shown in, both of the two first moving contacts 1311 of the first moving contact assembly 131 include three first diversion 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 diversion branches. Thus, when the first moving contact assembly 131 is in the second switch state, there are six branches connected in parallel to each other in the first moving contact assembly 131.

[0133] Correspondingly, both of the two second moving contacts 1321 of the second moving contact assembly 132 include three second diversion 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 diversion branches. Thus, when the second moving contact assembly 132 is in the second switch state, there are six branches connected in parallel to each other in the second moving contact assembly 132.

[0134] Since in the moving contact unit 10b, the first moving contact assembly 131 and the second moving contact assembly 132 can jointly switch between the first switch state and the second switch state. In the second switch state, the first moving contact assembly 131 and the second moving contact assembly 132 jointly conduct the electrical path between the first static lead-out assembly 11 and the second static lead-out assembly 12. The six first diversion branches in the first moving contact assembly 131 will be connected in parallel with the six second diversion branches in the second moving contact assembly 132, so that there are twelve branches connected in parallel between the first static lead-out assembly 11 and the second static lead-out assembly 12, which can greatly reduce the total resistance and meet the requirement of ultra-low contact resistance (such as less than 0.05 mΩ).

[0135] Combined with Figures 5 to 7 shown, the relay further includes a mounting base 30, and the moving contact assemblies 13 (such as the first moving contact assembly 131 and the second moving contact assembly 132) and the electromagnetic system 20 are both installed in the mounting base 30.

[0136] 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 opening, and the second mounting cavity 302 has a second mounting opening. The first mounting opening and the second mounting opening are located at two ends of the mounting base 30 in the first direction. The first moving contact assembly 131 can be mounted into the first mounting cavity 301 from the first mounting opening, and the second moving contact assembly 132 can be mounted into the second mounting cavity 302 from the second mounting opening.

[0137] With this structural arrangement, since the first mounting opening and the second mounting opening are located at two ends of the mounting base 30 in the first direction, and the first moving contact assembly 131 and the second moving contact assembly 132 are respectively mounted into the mounting base 30 from the first mounting opening and the second mounting opening, the installation convenience is improved.

[0138] Since in the embodiment of the present application, the first moving contact assembly 131 and the second moving contact assembly 132 are respectively mounted into the mounting base 30 from the first mounting opening and the second mounting opening, therefore, the advantage of arranging the moving contact unit 10b as the first moving contact assembly 131 and the second moving contact assembly 132 along the first direction is also that the first moving contact assembly 131 and the second moving contact assembly 132 are arranged in layers within the mounting base 30. In this way, the side wall of the mounting base 30 only needs to be provided with independent grooves at positions corresponding to the first moving contact assembly 131 and the second moving contact assembly 132 to meet the requirement of leading out the corresponding static lead pieces from the mounting base 30. This way of independently grooving for the moving contact assemblies is beneficial to reducing the grooving depth of the side wall of the mounting base 30, thereby maintaining the structural strength of the side wall of the mounting base 30. Specifically, since the two groups of moving contact assemblies 13 are arranged in layers, the static lead-out assemblies are also arranged in two parts in the first direction. Therefore, the two positions of the mounting base 30 corresponding to the two parts of the static lead-out assemblies can be independently grooved, so as to avoid the grooving being too deep and causing at least one side of the side wall of the mounting base 30 to become an isolated and unsupported structure, and then avoid affecting the overall structural strength of the mounting base 30 and improving the use reliability of the relay. Therefore, adopting the solution of this embodiment can improve the structural strength of the side wall of the mounting base 30 and achieve physical isolation and independent stress bearing for different moving contact assemblies 13.

[0139] In the conventional technology, the moving contact unit and the lead-out unit usually need to be installed inside the relay housing. Among them, the relay housing is provided with an opening, and the first static lead-out component and the second static lead-out component in the lead-out unit usually enter the relay housing from the opening and penetrate through the side wall of the relay housing. On this basis, if all the moving contact components and the lead-out unit are placed into the relay housing along the same opening, then, a groove with a relatively large depth needs to be opened on the relay housing for all the first static lead-out components and the second static lead-out components to penetrate, resulting in a significant reduction in the strength of the side wall of the relay housing. The side wall of the relay housing is prone to bending, and it may affect the assembly accuracy of the contacts and the overall structural strength and stability of the relay.

[0140] Both the first static lead-out component 11 and the second static lead-out component 12 include a plurality of static lead-out sheets arranged along the first direction. Each static lead-out sheet in the first static lead-out component 11 and each static lead-out sheet in the second static lead-out component 12 respectively correspond to each moving contact component 13 one by one. Each moving contact component 13 can conduct or disconnect the electrical path between the corresponding two static lead-out sheets. In this embodiment, by setting the first static lead-out component 11 and the second static lead-out component 12 to include a plurality of static lead-out sheets arranged along the first direction, it is to meet the needs of current input or current output of the corresponding moving contact components 13. Moreover, the plurality of static lead-out sheets in the same static lead-out component are arranged along the first direction, thereby maintaining the consistency with the arrangement direction of the plurality of moving contact components 13, which is beneficial to improving the utilization rate of the structural space of the relay and reducing the volume.

[0141] In some embodiments proposed in the present application, since the number of moving contact components 13 is two, it provides a basis for respectively providing two independent chambers (such as the first installation chamber 301 and the second installation chamber 302) in the relay housing to respectively accommodate two groups of moving contact components (such as the first moving contact component 131 and the second moving contact component 132) and setting the lead-out unit 10a into two groups. A groove for the lead-out unit to penetrate can be correspondingly provided in each chamber, so that the depth of the groove on the side wall of the relay housing is reduced to half or even more of the original, thereby effectively improving the bending strength of the side wall of the relay housing. In addition, it is also beneficial to respectively fix and support the two groups of moving contact components by configuring more sufficient installation structures in the independent chambers, improving the stability of the moving contact components, and realizing physical isolation and independent stress bearing.

[0142] The following will be described in conjunction with Figure 2 the structures of the first static lead-out component 11 and the second static lead-out component 12 in the shown relay. In conjunction with Figure 2 as shown, the first static lead-out component 11 includes two static lead-out sheets arranged along the first direction, namely the first static lead-out sheet 111 and the third static lead-out sheet 113. The second static lead-out component 12 includes two static lead-out sheets arranged along the first direction, namely the second static lead-out sheet 112 and the fourth static lead-out sheet 114.

[0143] In the first switch state, the first moving contact assembly 131 disconnects the electrical path between the first static lead piece 111 and the second static lead piece 112, and the second moving contact assembly 132 disconnects the electrical path between the third static lead piece 113 and the fourth static lead piece 114; in the second switch state, the first moving contact assembly 131 conducts the electrical path between the first static lead piece 111 and the second static lead piece 112, and the second moving contact assembly 132 conducts the electrical path between the third static lead piece 113 and the fourth static lead piece 114.

[0144] It should be noted that the first static lead piece 111, the third static lead piece 113, the second static lead piece 112, and the fourth static lead piece 114 can satisfy the electrical connection of the corresponding moving contact assembly 13 to the circuit outside the relay. Since both the first static lead assembly 11 and the second static lead assembly 12 are divided into two groups, it further provides a basis for setting up independent chambers on the relay housing to enhance the bending strength of the side wall of the relay housing.

[0145] Furthermore, the fixed ends 13a1 of the two moving contact pieces 13a of the first moving contact assembly 131 are respectively fixed to the first static lead piece 111 and the second static lead piece 112. The fixed ends 13a1 of the two moving contact pieces 13a of the second moving contact assembly 132 are respectively fixed to the third static lead piece 113 and the fourth static lead piece 114. All the swinging ends 13a2 can be driven by the electromagnetic system 20 to correspondingly contact or separate from the fixed end 13a1 of another moving contact piece 13a located in the same moving contact assembly 13. In this way, in the first switch state, the two moving contact pieces 13a of the first moving contact assembly 131 are separated from each other, thus disconnecting the electrical path between the first static lead piece 111 and the second static lead piece 112, and the two moving contact pieces 13a of the second moving contact assembly 132 are separated from each other, thus disconnecting the electrical path between the third static lead piece 113 and the fourth static lead piece 114. Correspondingly, in the second switch state, the two moving contact pieces 13a of the first moving contact assembly 131 are in contact with each other, thus conducting the electrical path between the first static lead piece 111 and the second static lead piece 112, and the two moving contact pieces 13a of the second moving contact assembly 132 are in contact with each other, thus conducting the electrical path between the third static lead piece 113 and the fourth static lead piece 114. In this way, the first moving contact assembly 131 and the second moving contact assembly 132 can be used together to disconnect or conduct the electrical path between the first static lead assembly 11 and the second static lead assembly 12, realizing the switching between the first switch state and the second switch state.

[0146] It should be noted that for each moving contact component 13, it is not limited to including two moving contact elements 13a. In some embodiments, the moving contact component 13 may also have only one moving contact element 13a. Taking the first moving contact component 131 as an example, the first moving contact component 131 includes one moving contact element 13a. One end of the moving contact element 13a is fixed to one of the first static lead-out piece 111 and the second static lead-out piece 112, and the other end can move to contact or separate from the other of the first static lead-out piece 111 and the second static lead-out piece 112, so that the first moving contact component 131 can disconnect or conduct the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112. Correspondingly, the second moving contact component 132 can also adopt a setting method similar to that of the first moving contact component 131 to disconnect or conduct the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114, which will not be elaborated here.

[0147] Understandably, when the moving contact unit 10b includes multiple groups of moving contact components 13, for example, the number of moving contact components 13 is 2 or more, regardless of whether the number of moving contact elements 13a in the moving contact component 13 is 1 or two, the moving contact unit 10b can be configured to be able to switch between the first switch state and the second switch state. Taking the first moving contact component 131 and the second moving contact component 132 as an example, in the first switch state, the first moving contact component 131 disconnects the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112, and the second moving contact component 132 disconnects the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114; in the second switch state, the first moving contact component 131 conducts the electrical path between the first static lead-out piece 111 and the second static lead-out piece 112, and the second moving contact component 132 conducts the electrical path between the third static lead-out piece 113 and the fourth static lead-out piece 114.

[0148] Continue Figure 8 and Figure 9 As shown, in some embodiments, the mounting base 30 is provided with a first groove C1, a second groove C2, a third groove C3 and a fourth groove C4. The first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113 and the fourth static lead-out piece 114 are correspondingly inserted through the first groove C1, the second groove C2, the third groove C3 and the fourth groove C4 to expose the connection terminals outside the mounting base 30 respectively.

[0149] As Figure 8 shown, the first groove C1 and the second groove C2 are located in the first installation cavity 301 in the third direction (for example Figure 8On opposite side walls in the Z direction (in the figure), and both extend along the first direction to one end of the seat body 31 where the first mounting opening is provided (i.e., the end where the first end face 30a of the mounting seat 30 is located). The third groove C3 and the fourth groove C4 are located on opposite side walls of the second mounting cavity 302 in the third direction, and both extend along the first direction to one end of the seat body 31 where the second mounting opening is provided (i.e., the end where the second end face 30b of the mounting seat 30 is located).

[0150] The first direction, the second direction, and the third direction intersect pairwise. In some embodiments, the first direction, the second direction, and the third direction are pairwise perpendicular. At this time, the coordinate system X - Y - Z established based on these three directions is a rectangular coordinate system.

[0151] Combined with Figure 8 and Figure 9 As shown, both the first groove C1 and the second groove C2 extend along the first direction to one end of the seat body 31 where the first mounting opening is provided, so that the first static lead - out piece 111 and the second static lead - out piece 112 can be correspondingly assembled into the first groove C1 and the second groove C2 along the first direction. Then, when the first moving contact assembly 131 is installed into the first mounting cavity 301 from the first mounting opening along the first direction, the first static lead - out piece 111 and the second static lead - out piece 112 connected to the first moving contact assembly 131 can be assembled into the seat body 31 together with the first moving contact assembly 131.

[0152] Correspondingly, since both the third groove C3 and the fourth groove C4 extend along the first direction to one end of the seat body 31 where the second mounting opening is provided, the third static lead - out piece 113 and the fourth static lead - out piece 114 can be correspondingly assembled into the third groove C3 and the fourth groove C4 along the first direction. Then, when the second moving contact assembly 132 is installed into the second mounting cavity 302 from the second mounting opening along the first direction, the third static lead - out piece 113 and the fourth static lead - out piece 114 connected to the second moving contact assembly 132 can be assembled into the seat body 31 together with the second moving contact assembly 132.

[0153] In the above - mentioned embodiments, since each moving contact assembly 13 in the contact system 10 can be assembled into the mounting seat 30 together with the corresponding static lead - out piece, the assembly operation of the contact system 10 in the mounting seat 30 is simplified, making the assembly of the relay more convenient.

[0154] It should be noted that in the embodiment where each moving contact component 13 includes two moving contact pieces 13a. Taking the first moving contact component 131 including two first moving contact pieces 1311 and the second moving contact component 132 including two second moving contact pieces 1321 as an example. The first static lead-out piece 111 is connected to one of the first moving contact pieces 1311, and the second static lead-out piece 112 is connected to the other first moving contact piece 1311. The third static lead-out piece 113 is connected to one of the second moving contact pieces 1321, and the fourth static lead-out piece 114 is connected to the other second moving contact piece 1321. Through this structural arrangement, it is convenient to use the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 to meet the requirement of electrically connecting the corresponding moving contact piece 13a to the circuit outside the relay.

[0155] In addition, by arranging the first static lead-out component 11 to include the first static lead-out piece 111 and the third static lead-out piece 113 arranged along the first direction, the first static lead-out piece 111 and the third static lead-out piece 113 can be independently installed in the corresponding first groove C1 and third groove C3. Compared with the case where the first static lead-out piece 111 and the third static lead-out piece 113 are integrally arranged and a deeper groove needs to be opened in the mounting base 30, this embodiment can maintain the structural strength of the mounting base 30.

[0156] Correspondingly, by arranging the second static lead-out component 12 to include the second static lead-out piece 112 and the fourth static lead-out piece 114 arranged along the first direction, the second static lead-out piece 112 and the fourth static lead-out piece 114 can be independently installed in the corresponding second groove C2 and fourth groove C4. Compared with the case where the second static lead-out piece 112 and the fourth static lead-out piece 114 are integrally arranged and a deeper groove needs to be opened in the mounting base 30, this embodiment can maintain the structural strength of the mounting base 30.

[0157] In the above embodiment, corresponding grooves are respectively opened at both ends of the seat body 31 to arrange the static lead-out pieces. In this way, the depth of the groove in the first direction only needs to meet the assembly requirement of the corresponding static lead-out piece, and then the grooving depth of the groove in the first direction can be made as small as possible to maintain the structural strength of the seat body 31.

[0158] For the convenience of understanding, the effect of the structural arrangement of this relay of the present application will be further described below in combination with the installation structure of the contact system 10 in the related art, but it does not mean that the effect of the structural arrangement of the relay of the present application is limited thereto.

[0159] For example, in the related art, to meet the need of reducing the contact resistance, the moving contact 13a is usually configured to include a plurality of parallel branches. Taking the case where each moving contact 13a includes six parallel branches, or two moving contacts 13a arranged in the first direction respectively include three parallel branches and a total of six parallel branches, in the related art, the six parallel branches achieve current output or input through the same static lead-out piece. Assuming that the size of the static lead-out piece in the first direction is d to adapt to the need of current flow, in the related art, if the relay mounting base 30 is only provided with one mounting cavity for mounting the contact system, then, the relay mounting base 30 needs to open a groove with a depth not less than d on the cavity wall of the mounting cavity to adapt to the installation need of the static lead-out piece.

[0160] In the embodiment of the present application, since the first moving contact assembly 131 and the second moving contact assembly 132 are arranged in the first direction and are connected in parallel with each other. The first static lead-out piece 111 and the third static lead-out piece 113 are both connected to a load terminal in the circuit to which the relay is applied, and the third static lead-out piece 113 and the fourth static lead-out piece 114 are both connected to another load terminal in the circuit to which the relay is applied. Based on this, in the relay of the embodiment of the present application, if six parallel branches are realized by using the first moving contact 1311 and the second moving contact 1321, the first static lead-out piece 111 connected to the first moving contact 1311 only needs to adapt to the current transmission need of the first moving contact 1311, and the third static lead-out piece 113 connected to the second moving contact 1321 only needs to adapt to the current transmission need of the second moving contact 1321. Thus, the first static lead-out piece 111 and the third static lead-out piece 113 respectively bear a part of the current of the six parallel branches. Compared with the related art where the same static lead-out piece needs to bear the current of the six parallel branches, in the relay of the present application, the size of the first static lead-out piece 111 can be made smaller than d, and the size of the third static lead-out piece 113 is smaller than d.

[0161] Ideally, if the current guiding capabilities of the parallel branches of the present application are the same as those of the parallel branches in the related art, the total current flowing through the first static lead-out piece 111 and the third static lead-out piece 113 is the same as the current flowing through one static lead-out piece in the related art. Correspondingly, in the first direction, the sum of the sizes of the first static lead-out piece 111 and the third static lead-out piece 113 will also be the same as the size d of one static lead-out piece in the related art. Thus, when the relay of the present application maintains the same contact resistance and current-carrying performance as the relay in the related art, the sizes of both the first static lead-out piece 111 and the third static lead-out piece 113 are smaller than d. Understandably, if the current flowing through the first moving contact 1311 and the second moving contact 1321 is the same, the currents that the first static lead-out piece 111 and the third static lead-out piece 113 need to share are also the same. At this time, the sizes of the first static lead-out piece 111 and the third static lead-out piece 113 in the first direction can be equal, that is, in the first direction, the sizes of both the first static lead-out piece 111 and the third static lead-out piece 113 are d / 2. Thus, the depth of the first groove C1 only needs to be d / 2 to meet the assembly requirements of the first static lead-out piece 111; correspondingly, the depth of the third groove C3 only needs to be d / 2 to meet the assembly requirements of the third static lead-out piece 113. It can be seen that for the relay of the present application, by arranging the moving contact unit 10b as a plurality of moving contact components 13 arranged along the first direction, it is possible to reduce the size requirements of each static lead-out piece in the first direction in the lead-out unit 10a, thereby reducing the depth of the slot on the mounting base 30, and avoiding the situation where at least one side of the side wall (such as Figure 5 the side wall where the outer wall surface 30d of the mounting base 30 is located in) for installing one of the static lead-out pieces will become an isolated and unsupported structure. Therefore, the implementation manner of the present application is beneficial to maintaining the overall structural strength of the mounting base 30 and improving the use reliability of the relay.

[0162] It should be noted that the sizes of the static lead-out pieces in the first direction mentioned above are all the sizes designed to meet the current transmission performance of the static lead-out pieces based on the condition that the thickness and conductivity are the same. And considering that the static lead-out piece is a conductor, the position that restricts its current guiding performance is the position with the smallest cross-section, and the influence of the slot depth on the mounting base 30 is mainly the position corresponding to the inner wall of the seat body 31 of the static lead-out piece. Therefore, the sizes of the static lead-out pieces in the first direction mentioned above are for the position where the cross-section of the static lead-out piece is the smallest and corresponds to the inner wall of the seat body 31. As for whether the sizes of other parts of the static lead-out piece are set larger and the shape of the static lead-out piece, no limitation is made here.

[0163] For the sake of easy understanding, hereinafter, the depth of each groove corresponding to the inner wall of the seat body 31 is referred to as the "slot depth", that is, the depth of the notch where each groove communicates with the corresponding installation cavity is referred to as the "slot depth".

[0164] For example, as shown in combination with Figure 8 and Figure 9 , the depth of the third groove C3 corresponding to the inner wall of the seat body 31 is d / 2, so the grooving depth of the third groove C3 is d / 2. The grooving depth of the third groove C3 here only refers to the depth corresponding to the inner wall of the seat body 31, and does not mean that the depth of the third groove C3 at other positions of the seat body 31 is d / 2. As Figure 8 and Figure 9 shown, the dimension of the third groove C3 extending to the position of the outer wall surface 30d of the seat body 31 (i.e., the position where the third static lead-out piece 113 passes through the outer wall of the seat body 31) can be D, and D is greater than or equal to d / 2.

[0165] In combination with Figure 8 and Figure 9 shown, for the first groove C1, the second groove C2, and the fourth groove C4, their grooving depths only need to meet the installation requirements of the corresponding static lead-out pieces, and will not be elaborated one by one here.

[0166] In some embodiments, the depth of the second groove C2 corresponding to the inner wall surface 30c of the first installation cavity 301 is equal to the depth corresponding to the outer wall surface 30d of the seat body 31.

[0167] The depth of the fourth groove C4 corresponding to the inner wall of the seat body 31 is equal to the depth corresponding to the outer wall of the seat body 31.

[0168] In some embodiments, the grooving depth of the first groove C1 is less than or equal to 1 / 3 of the depth of the first installation cavity 301. By providing the first groove C1 to meet the requirement for the first static lead-out piece 111 to be led out from the mounting seat 30, and at the same time, by controlling the grooving depth of the first groove C1, the depth of the first groove C1 is shallow, which is beneficial to maintaining the structural strength of the mounting seat 30, making the mounting seat 30 not easily deformed, thereby enhancing the reliability of the relay.

[0169] The dimension of the portion of the first static lead-out piece 111 cooperating with the first groove C1 in the first direction is less than the dimension of the other portions of the first static lead-out piece 111 (such as the connection terminal of the first static lead-out piece 111, or the portion of the first static lead-out piece 111 connected to the moving contact 13a) in the first direction; thus, on the one hand, the first groove C1 is used to meet the assembly requirement for a part of the structure of the first static lead-out piece 111, and at the same time, the dimension of the other portions of the first static lead-out piece 111 in the first direction is large, which is beneficial to ensuring the current-carrying area to reduce the resistance.

[0170] Accordingly, the grooving depth of the second groove C2 is less than or equal to 1 / 3 of the depth of the first mounting cavity 301. The grooving depth of the third groove C3 is less than or equal to 1 / 3 of the depth of the second mounting cavity 302. The grooving depth of the fourth groove C4 is less than or equal to 1 / 3 of the depth of the second mounting cavity 301. By controlling the grooving depth of each groove, it is beneficial to maintain the structural strength of the mounting base 30, making the mounting base 30 not easily deformed, thereby enhancing the reliability of the relay.

[0171] Similar to the first static lead-out piece 111, for other static lead-out pieces such as the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114, the dimension of the part that cooperates with the corresponding groove in the first direction is smaller than the dimension of the other parts of the static lead-out piece in the first direction. Thus, the groove with reduced grooving depth can meet the assembly requirements of the corresponding static lead-out piece. At the same time, the larger dimension of the other parts of each static lead-out piece in the first direction is beneficial to ensure the current-carrying area to reduce the resistance.

[0172] Combined Figure 1 、 Figure 2 and Figure 5 As shown, in some embodiments, the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 all have bending portions. The first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 lead out connection terminals along the second direction to the side where the outer wall surface 30d of the mounting base 30 is located through their respective bending portions.

[0173] For the convenience of description, the bending portions in the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 are correspondingly referred to as "the first bending portion 111a", "the second bending portion 112a", "the third bending portion 113a", and "the fourth bending portion 114a"; and the connection terminals among them are correspondingly referred to as "the first connection terminal 111b", "the second connection terminal 112b", "the third connection terminal 113b", and "the fourth connection terminal 114b".

[0174] In the first static lead-out piece 111, due to the provision of the first bending portion 111a, the first connection terminal 111b is led out toward the side where the outer wall surface 30d of the mounting base 30 is located. In the second static lead-out piece 112, due to the provision of the second bending portion 112a, the second connection terminal 112b is led out toward the side where the outer wall surface 30d of the mounting base 30 is located. In the third static lead-out piece 113, due to the provision of the third bending portion 113a, the third connection terminal 113b is led out toward the side where the outer wall surface 30d of the mounting base 30 is located. In the fourth static lead-out piece 114, due to the provision of the fourth bending portion 114a, the fourth connection terminal 114b is led out toward the side where the outer wall surface 30d of the mounting base 30 is located.

[0175] Each connection terminal is led out from the same side of the mounting base 30. Specifically, all the connection terminals are arranged in the same plane parallel to both the first direction and the third direction, so that the arrangement of the static lead-out pieces in the relay is compact, reducing the size occupation of the relay along the third direction or the first direction, which is beneficial to the miniaturization of the relay and makes it easier to adapt to a limited installation space, such as the narrow battery compartment space in an automobile; in addition, it is also beneficial to support the compact side-by-side installation of multiple relays.

[0176] Furthermore, all the connection terminals are located outside the outer wall surface 30d of the mounting base 30 that is closer to the contact system 10 in the second direction. In this way, the distance from each connection terminal to the moving contact unit 10b in the contact system 10 is small. Thus, the conductive material consumed by each static lead-out piece for leading out the connection terminal outside the mounting base 30 can be reduced, thereby reducing the cost. The conductive material here includes but is not limited to copper or copper alloy.

[0177] Combined Figure 5 、 Figure 8 and Figure 9 As shown in, the two side walls of the mounting base 30 in the third direction are respectively provided with shielding walls 30e, and each shielding wall 30e correspondingly shields each bending portion. In this way, while the connection terminal maintains the connection between the relay and the external device, the corresponding bending portion can be shielded by each shielding wall 30e, thereby improving the overall aesthetic appearance of the relay.

[0178] In other possible embodiments, the first static lead-out piece 111 and the third static lead-out piece 113 may be integrated, and the second static lead-out piece 112 and the fourth static lead-out piece 114 may also be integrated, which is not limited herein.

[0179] Combined Figures 5 to 7As shown, the mounting base 30 includes a base body 31 and a first mounting plate 32. The first mounting plate 32 is connected to the inner wall of the base body 31. The first mounting plate 32 divides the inner cavity of the base body 31 into a first mounting cavity 301 and a second mounting cavity 302 along a first direction. Therefore, in the first direction, the first mounting cavity 301 is located on one side of the first mounting plate 32, and the second mounting cavity 302 is located on the other side of the first mounting plate 32. In this way, the setting of the first mounting plate 32 does not interfere with the installation of the first moving contact assembly 131 and the second moving contact assembly 132, that is, the installation convenience of the first moving contact assembly 131 and the second moving contact assembly 132 in the mounting base 30 is maintained. At the same time, since the first mounting plate 32 is connected to the inner wall of the base body 31, the first mounting plate 32 can play a role in strengthening the structure of the base body 31, making the base body 31 not easily deformed. Subsequently, even when the static contact 13b is impacted by the moving contact 13c during the contact action of the first moving contact assembly 131 and the second moving contact assembly 132, generating an impact force on the base body 31, the base body 31 can reduce the probability of deformation or damage under the strengthening action of the first mounting plate 32, making the relay not easily damaged and extending the service life of the relay.

[0180] The electromagnetic system 20 can be installed into the base body 31 from one end of the mounting base 30 along the first direction. The inner cavity of the base body 31 also has a third mounting cavity 303 that communicates with both the first mounting cavity 301 and the second mounting cavity 302. The third mounting cavity 303 has a third mounting opening, and the third mounting opening is located at one end of the mounting base 30 in the first direction. Understandably, the third mounting opening can be understood as the opening of the third mounting cavity 303 on the mounting base 30. The third mounting opening is used for installing the electromagnetic system 20 into the third mounting cavity 303.

[0181] Combined with Figure 8 and Figure 9 As shown, the mounting base 30 further includes a second mounting plate 33. The second mounting plate 33 is connected to the first mounting plate 32, and the second mounting plate 33 divides the space enclosed by the base body 31 to form the third mounting cavity 303. One end of the second mounting plate 33 in the first direction and a part of the side wall of the base body 31 enclose to form the third mounting opening.

[0182] Combined with Figure 5 and Figure 8 As shown, in the second direction, both the first mounting cavity 301 and the second mounting cavity 302 are located on one side of the second mounting plate 33, and the third mounting cavity 303 is located on the other side of the second mounting plate 33. The electromagnetic system 20 can be installed into the third mounting cavity 303 along the first direction.

[0183] Understandably, 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 can be installed into the third mounting cavity 303 from the third mounting opening along the first direction.

[0184] In this embodiment, the second direction is perpendicular to the first direction. Thus, the first moving contact assembly 131 and the second moving contact assembly 132 arranged along the first direction can be compactly located on one side of the second mounting plate 33, and the electromagnetic system 20 can be compactly arranged on the other side of the second mounting plate 33, which is conducive to the miniaturization of the relay.

[0185] It should be noted that the second mounting plate 33 can also play a fixing role. For example, the second mounting plate 33 can provide a rotation support point for one end of the armature assembly 22. For another example, the second mounting plate 33 can meet the installation requirements of the static lead piece close to the electromagnetic system 20.

[0186] Furthermore, in combination with 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. Part of the structures of the second mounting plate 33 and the side wall portion 312 jointly enclose a third mounting cavity 303, and another part of the structure of the side wall portion 312, the first mounting plate 32 and the second mounting plate 33 enclose 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.

[0187] 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 the coil assembly 21 and the installation stability of the armature assembly 22.

[0188] In some embodiments, the armature assembly 22 is connected with a rotating shaft 22a. One end of the rotating shaft 22a is connected to the bottom wall portion 312, and the armature assembly 22 can rotate relative to the bottom wall portion 312 around the central axis of the rotating shaft 22a. In this embodiment, the rotation of the armature assembly 22 relative to the bottom wall portion 312 around the central axis of the rotating shaft 22a is used to provide power for the contact or disconnection action of the first moving contact assembly 131 and the second moving contact assembly 132, so that the moving contact unit 10b can be switched between the first switch state and the second switch state. The axial direction of the rotating shaft 22a is arranged parallel to the first direction. Therefore, the armature assembly 22 can be rotatably connected to the bottom wall portion 312 through the rotating shaft 22a by being assembled into the third installation cavity 303 of the mounting base 30 along the first direction. Since the first moving contact assembly 131 is assembled into the first installation cavity 301 of the mounting base 30 along the first direction and the second moving contact assembly 132 is assembled into the second installation cavity 302 of the mounting base 30 along the first direction, in the relay of the present application, the armature assembly 22, the first moving contact assembly 131, and the second moving contact assembly 132 can be assembled into the mounting base 30 in the same dimension (i.e., the first direction), making the assembly operation convenient. And under this structural layout, it is beneficial to reduce the waste of the assembly space so as to realize the miniaturization of the relay.

[0189] In some embodiments, the extending direction of the second mounting plate 33 is parallel to the first direction. In this way, 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 not likely to interfere with the assembly of the first moving contact assembly 131 and the second moving contact assembly 132, so that the first moving contact assembly 131 and the second moving contact assembly 132 can be compactly installed in the first installation cavity 301 and the second installation cavity 302, which is beneficial to realizing the miniaturization of the relay.

[0190] It should be noted that the second mounting plate 33 can be used to position some static lead-out pieces in the lead-out unit 10a, so as to improve the installation stability of the static lead-out pieces in the mounting base 30.

[0191] For example, as shown in Figure 5 and Figure 6 a first positioning buckle 331 is provided on the second mounting plate 33. Partial structures of the first static lead-out piece 111 and the third static lead-out piece 113 are both matched with the first positioning buckle 331. Thus, the first positioning buckle 331 is used to position the first static lead-out piece 111 and the third static lead-out piece 113 and limit them along the second direction, making the installation of the first static lead-out piece 111 and the third static lead-out piece 113 on the mounting base 30 more stable and not likely to loosen, thereby improving the stability of the static contact points 13b on the first static lead-out piece 111 and the third static lead-out piece 113 and the use effect of the relay.

[0192] 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 partial structure of the second static lead-out piece 112 is matched with the second positioning buckle 3011. Thus, the second positioning buckle 3011 is used to position the second static lead-out piece 112 and limit it in the second direction, so that the second static lead-out piece 112 is more stably mounted on the mounting base 30 and not easily loosened. Therefore, the stability of the static contact 13b on the second static lead-out piece 112 is improved, and the use effect of the relay is enhanced.

[0193] Combined with 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 a partial structure of the fourth static lead-out piece 114 is matched with the third positioning buckle 3021. Thus, the third positioning buckle 3021 is used to position the fourth static lead-out piece 114 and limit it in the second direction, so that the fourth static lead-out piece 114 is more stably mounted on the mounting base 30 and not easily loosened. Therefore, the stability of the static contact 13b on the fourth static lead-out piece 114 is improved, and the use effect of the relay is enhanced.

[0194] Referring again to Figure 1 and Figure 2 As shown, the relay further includes a pushing mechanism 40, and the pushing mechanism 40 is disposed between the armature assembly 22 and the contact system 10. The pushing mechanism 40 is configured to drive the first moving contact assembly 131 and the second moving contact assembly 132 to act synchronously under the drive of the armature assembly 22, and then enable the moving contact unit 10b to switch between the first switching state and the second switching state.

[0195] It should be noted that since the multiple moving contact assemblies 13 of the contact system 10 can be conducted or disconnected from the first static lead-out assembly 11 and the second static lead-out assembly 12 under the drive of the armature assembly 22, and the pushing mechanism 40 can play a transmission role between the armature assembly 22 and the contact system 10. Therefore, the pushing of the pushing mechanism 40 on the first moving contact 1311 can satisfy the requirement of pushing the two first moving contacts 1311 of each first moving contact assembly 131 to a position where they are in contact with each other or disconnected from each other; correspondingly, the pushing of the pushing mechanism 40 on the second moving contact 1321 can satisfy the requirement of pushing the two second moving contacts 1321 of each second moving contact assembly 132 to a position where they are in contact with each other or disconnected from each other.

[0196] Combined with Figure 2 、 Figure 6 and Figure 7As shown, the pushing mechanism 40 includes a first set of pushing cards 41 and a second set of pushing cards 42. The first set of pushing cards 41 includes two first pushing cards 411, and the second set of pushing cards 42 includes two second pushing cards 421. Among them, the two first pushing cards 411 are respectively connected to the two first moving contact members 1311 correspondingly, and the two second pushing cards 421 are respectively connected to the two second moving contact members 1321 correspondingly. Through this structural arrangement, the pushing mechanism 40 is split in the first direction in the mounting base 30 by using the first set of pushing cards 41 and the second set of pushing cards 42. Thus, in the case where multiple sets of moving contact assemblies 13 are arranged in the first direction and need to be driven simultaneously, it is avoided that the size of the pushing card in the first direction is too large due to using a single set of pushing cards, which is likely to cause deformation or breakage, and the reliability of the pushing mechanism 40 for pushing such a large contact system 10 is improved.

[0197] The armature assembly 22 includes a first connecting arm 221 and a second connecting arm 222. The armature assembly 22 can rotate back and forth around a rotating shaft 22a parallel to the first direction, so that the driving ends of the first connecting arm 221 and the second connecting arm 222 move in opposite directions. The two first pushing cards 411 are correspondingly connected to the first connecting arm 221 and the second connecting arm 222. The two second pushing cards 421 are correspondingly connected to the first connecting arm 221 and the second connecting arm 222. The ends of the two first pushing cards 411 away from the first moving contact assembly 131 are respectively correspondingly connected to the driving ends of the first connecting arm 221 and the second connecting arm 222, and the ends of the two second pushing cards 421 away from the second moving contact assembly 132 are respectively correspondingly connected to the driving ends of the first connecting arm 221 and the second connecting arm 222.

[0198] Since the driving ends of the first connecting arm 221 and the second connecting arm 222 move in opposite directions, when the first pushing cards 411 and the second pushing cards 421 connected to the first connecting arm 221 move together in the second direction in one direction, the first pushing cards 411 and the second pushing cards 421 connected to the second connecting arm 222 move together in the second direction in the opposite direction, so that when the correspondingly arranged first moving contact members 1311 contact each other, the correspondingly arranged second moving contact members 1321 contact each other; correspondingly, when the correspondingly arranged first moving contact members 1311 are disconnected from each other, the correspondingly arranged second moving contact members 1321 are disconnected from each other.

[0199] For the sake of easy understanding, the arrangement of the first moving contact assembly 131 in the seat body 31 will be described below in combination with the implementation manner of the two first moving contact members 1311 of the first moving contact assembly 131 contacting or disconnecting from each other, but it is not limited thereto.

[0200] Combined with Figure 3 and Figure 6As shown, when the armature assembly 22 rotates about the rotating shaft 22a parallel to the first direction, the pushing mechanism 40 can drive the swinging end 13a2 of the first moving contact 1311 under the drive of the armature assembly 22, so that the swinging end 13a2 contacts or separates from the adjacent first moving contact 1311 in the second direction.

[0201] Among the two first moving contacts 1311 of the first moving contact assembly 131, the swinging end 13a2 of any one first moving contact 1311 corresponds to the fixed end 13a1 of the other first moving contact 1311, so that the static contact 13b and the moving contact 13c of one first moving contact 1311 are respectively opposite to the moving contact 13c and the static contact 13b of the other first moving contact 1311. The swinging end 13a2 of one first moving contact 1311 is connected to one first pushing card 411, and the swinging end 13a2 of the other first moving contact 1311 is connected to the other first pushing card 411. Thus, when the two first pushing cards 411 move in opposite directions, the swinging ends 13a2 of the two first moving contacts 1311 move in opposite directions under the drive of the corresponding two first pushing cards 411, so that the two sets of corresponding moving contacts 13c and static contacts 13b of the two first moving contacts 1311 contact or separate from each other.

[0202] Correspondingly, among the two second moving contacts 1321 of the second moving contact assembly 132, the swinging end 13a2 of any one second moving contact 1321 corresponds to the fixed end 13a1 of the other second moving contact 1321, so that the static contact 13b and the moving contact 13c of one second moving contact 1321 are respectively opposite to the moving contact 13c and the static contact 13b of the other second moving contact 1321. The swinging end 13a2 of one second moving contact 1321 is connected to one second pushing card 421, and the swinging end 13a2 of the other second moving contact 1321 is connected to the other second pushing card 421. Thus, when the two second pushing cards 421 move in opposite directions, the swinging ends 13a2 of the two second moving contacts 1321 move in opposite directions under the drive of the corresponding two second pushing cards 421, so that the two sets of corresponding moving contacts 13c and static contacts 13b of the two second moving contacts 1321 contact or separate from each other.

[0203] In some embodiments, the armature assembly 22 is located between the coil assembly 21 and the contact system 10 in the second direction. In this way, the armature assembly 22 can be closer to the contact system 10, which is beneficial to reducing the length of the force arm for the armature assembly 22 to drive the contact system 10 to act, so as to make the structure compact and realize the miniaturization of the relay.

[0204] Taking the armature assembly 22 including 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 ends of the first connecting arm 221 and 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 in pairs.

[0205] 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 distances 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 are short. As a transmission structure for driving the swing ends 13a2 of the corresponding moving contact members 13a to move under the drive of the armature assembly 22, the shorter the distances 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 lengths of the two first pushing cards 411 in the first set of pushing cards 41 and the two second pushing cards 421 in the second set of pushing cards 42 in the second direction. Subsequently, it is not easy to deform when driving the moving contact member 13a to move, which is beneficial to maintaining the contact reliability between the moving contact members 13a, and thus improves the reliability of the relay.

[0206] It should be noted that the number of pushing cards in the pushing mechanism 40 is not limited to the two sets of pushing cards, namely the first set of pushing cards 41 and the second set of pushing cards 42. In some embodiments, the pushing mechanism 40 includes multiple sets of pushing cards, and multiple sets of pushing cards means that the number of sets of pushing cards is 2 or more. Each set of pushing cards is arranged along the first direction and is respectively connected to the respective moving contact assemblies 13 arranged along the first direction. The structures of each set of pushing cards and the connection structures with the respective moving contact assemblies 13 are not limited herein.

[0207] In some embodiments, since there can be multiple sets of moving contact assemblies 13, the installation methods of the multiple sets of moving contact assemblies 13 in the mounting base 30 can be that some of the moving contact assemblies 13 are installed in the first installation cavity 301 and some of the moving contact assemblies 13 are installed in the second installation cavity 301.

[0208] For example, in the 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 installation cavity 301 and a second installation cavity 302 along the first direction. At least one set of moving contact assemblies 13 can be installed into the first installation cavity 301 from the first installation opening, and at least another set of moving contact assemblies 13 can be installed into the second installation cavity 302 from the second installation opening.

[0209] In an embodiment where the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22, the armature assembly 22 is configured to move based on the polarity change of the coil assembly 21, and drive each moving contact assembly 13 to act synchronously through each set of pushing cards. The electromagnetic system 20 can be inserted into the seat body 31 from one of the first mounting port and the second mounting port, so as to improve the assembly efficiency.

[0210] Combined with 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, and the lead-out units 10a are arranged in one-to-one correspondence with the moving contact units 10b. Each moving contact unit 10b is arranged along a second direction, and the second direction is perpendicular to the first direction. When each moving contact unit 10b is in the first switching state, it is respectively electrically connected in cooperation with the adjacent moving contact unit 10b, so that among the two lead-out units 10a corresponding to the two adjacent moving contact units 10b arranged adjacent to each other, the first static lead-out component 11 of one lead-out unit 10a and the second static lead-out component 12 of the other lead-out unit 10a are connected in series with each other. When each moving contact unit 10b is in the second switching state, each lead-out unit 10a is arranged in an open circuit. Thus, the contact system 10 can perform series-parallel function switching to adapt to certain special usage scenarios, such as being applied to the battery management system of an automobile to optimize the charging and discharging functions of the battery pack.

[0211] 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 element 10b along a third direction. When the two moving contact pieces 13a in each moving contact unit 10b are separated from each other, the adjacent moving contact pieces 13a in at least two moving contact units 10b are connected in parallel with each other, and one static lead-out piece in one lead-out unit 10a is electrically conducted to one static lead-out piece in the other lead-out unit 10a, so that the contact system 10 can perform series-parallel function switching.

[0212] For the sake of easy understanding, hereinafter, an example where the contact system 10 includes two moving contact units 10b and two lead-out units 10a is taken.

[0213] Continuing to combine with 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.

[0214] The first moving contact unit 101 and the second moving contact unit 102 are arranged along the second direction, and the first moving contact unit 101 is located between the armature assembly 22 and the second moving contact unit 102. The lead-out units 10a are arranged in one-to-one correspondence with the moving contact units 10b.

[0215] Regarding the structures of the first movable contact unit 101 and the second movable contact unit 102, reference may be made to the description of the movable contact unit 10b above; correspondingly, the structures of the first lead-out unit 103 and the second lead-out unit 104 may be referred to the description of the lead-out unit 10a above, which will not be elaborated here. For example, each of the first movable contact unit 101 and the second movable contact unit 102 includes the aforementioned first static lead-out assembly 11 and second static lead-out assembly 12.

[0216] It should be noted that the first static lead-out assembly 11 and the second static lead-out assembly 12 of the lead-out unit 10a are respectively disposed on both sides of the corresponding movable contact unit 10b along the third direction. That is to say, the first static lead-out assembly 11 and the second static lead-out assembly 12 of the first lead-out unit 103 are respectively disposed on both sides of the first movable contact unit 101 along the third direction, and the first static lead-out assembly 11 and the second static lead-out assembly 12 of the second lead-out unit 104 are respectively disposed on both sides of the second movable contact unit 102 along the third direction.

[0217] For the sake of description, in combination with Figures 10 to 12 as shown, "static lead-out piece one P1", "static lead-out piece two P2", "static lead-out piece three P3" and "static lead-out piece four P4" are respectively used to represent "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; "static lead-out piece five P5", "static lead-out piece six P6", "static lead-out piece seven P7" and "static lead-out piece eight P8" are respectively used to represent "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 second lead-out unit 10a. And the connection terminals corresponding to each static lead-out piece are successively called "terminal one D1", "terminal two D2", "terminal three D3", "terminal four D4", "terminal five D5", "terminal six D6", "terminal seven D7" and "terminal eight D8".

[0218] In combination with Figure 12 as shown, in some embodiments, static contact points 13b and movable contact points 13c are provided on both sides of the movable contact member 13a of the first movable contact unit 101 that is closer to the second movable contact unit 102 in the second direction. Static contact points 13b are provided on both sides of the fixed end 13a1 of the movable contact member 13a of the second movable contact unit 102 that is closer to the first movable contact unit 101 in the second direction. Correspondingly, movable contact points 13c are provided on both sides of the swing end 13a2 of the movable contact member 13a in the second direction.

[0219] On both sides of the movable contact piece 13a of the second movable contact unit 102 that is closer to the first movable contact unit 101 in the second direction, static contacts 13b and movable contacts 13c are provided. On both sides of the fixed end 13a1 of the movable contact piece 13a of the second movable contact unit 102 that is closer to the first movable contact unit 101 in the second direction, static contacts 13b are provided. Correspondingly, on both sides of the swing end 13a2 of the movable contact piece 13a in the second direction, movable contacts 13c are provided. When the two movable contact pieces 13a of the first movable contact unit 101 are separated from each other and the two movable contact pieces 13a of the second movable contact unit 102 are separated from each other, the adjacent movable contact pieces 13a of the first movable contact unit 101 and the second movable contact unit 102 are in contact with each other through the correspondingly arranged movable contacts 13c and static contacts 13b, so as to realize the cooperative electrical connection between the first movable contact unit 101 and the second movable contact unit 102, so that each lead-out unit 10a has a static lead-out component connected in series with each other.

[0220] In the above embodiments, not only can the two movable contact pieces 13a in the same movable contact unit 10b be brought into contact with each other, but also the two movable contact pieces 13a in different movable contact units 10b can be brought into contact with each other. Correspondingly, the two movable contact pieces 13a in the same movable contact unit 10b can be brought into contact with each other, or the two movable contact pieces 13a in different movable contact units 10b can be brought into contact with each other. Then, the relay can use the first movable contact unit 101 and the second movable contact unit 102 to realize series-parallel switching.

[0221] Continuing to combine Figures 10 to 12 As shown, the structural setting in which the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 all have bent portions is also applicable to the case of two groups of lead-out units 10a. For example, as Figure 10 shown, in some embodiments, whether it is the first lead-out unit 103 or the second lead-out unit 104, all the connection terminals (i.e., terminal one D1 - terminal eight D8) are arranged in the same plane parallel to both the first direction and the third direction. Specifically, the first static lead-out piece P1, the second static lead-out piece P2, the third static lead-out piece P3, the fourth static lead-out piece P4, the fifth static lead-out piece P5, the sixth static lead-out piece P6, the seventh static lead-out piece P7, and the eighth static lead-out piece P8 all have bent portions, and the connection terminals are led out to the outside of the seat body 31 along the second direction through their respective bent portions, so that all the connection terminals are arranged in the same plane parallel to both the first direction and the third direction. With this structural setting, the connection terminals are arranged on the same side surface of the seat body 31, occupying a small space, which is convenient for the electrical connection between the relay and external components such as circuit boards.

[0222] Combined with Figure 10 and Figure 11As shown, in the first lead-out unit 103 and the second lead-out unit 104, the connection terminals of the first static lead-out piece 111 and the third static lead-out piece 113 of one of them (i.e., the first connection terminal 111b and the third connection terminal 113b) are arranged in the first direction and are located between the connection terminals of the first static lead-out piece 111 and the third static lead-out piece 113 of the other. For example, as Figure 10 shown, terminal five D5 and terminal seven D7 are located between terminal one D1 and terminal three D3. For another example, in other embodiments, the positions of terminal one D1 and terminal five D5 can be interchanged, and the positions of terminal three D3 and terminal seven D7 can be interchanged, so that terminal one D1 and terminal three D3 are located between terminal five D5 and terminal seven D7. Correspondingly, in the first lead-out unit 103 and the second lead-out unit 104, the connection terminals of the second static lead-out piece 112 and the fourth static lead-out piece 114 of one of them (i.e., the second connection terminal 112b and the fourth connection terminal 114b) are arranged in the first direction and are located between the connection terminals of the second static lead-out piece 112 and the fourth static lead-out piece 114 of the other. In this embodiment, the contact system 10 can perform series-parallel switching to adapt to some special usage scenarios, such as being applied to the battery management system of an automobile to optimize the charge and discharge functions of the battery pack. Through the above structural settings, the connection terminals for at least one group connected to the same load terminal can be arranged close to each other, facilitating subsequent circuit connection and insulation design between the connection terminals connected to different load terminals.

[0223] Continuing to combine Figures 10 to 12 shown, the first moving contact unit 101 is located between the armature assembly 22 and the second moving contact unit 102. That is to say, the second moving contact unit 102 is located on the side of the first moving contact unit 101 facing away from the armature assembly 22. In the first moving contact unit 101, the first moving contact piece 1311 farther from the second moving contact unit 102 is connected to the first static lead-out piece P1, the first moving contact piece 1311 closer to the second moving contact unit 102 is connected to the second static lead-out piece P2, the second moving contact piece 1321 farther from the second moving contact unit 102 is connected to the third static lead-out piece P3, and the first moving contact piece 1311 closer to the second moving contact unit 102 is connected to the fourth static lead-out piece P4.

[0224] In the second moving contact unit 102, the first moving contact piece 1311 closer to the first moving contact unit 101 is connected to the fifth static lead-out piece P5, the first moving contact piece 1311 farther from the first moving contact unit 101 is connected to the sixth static lead-out piece P6, the second moving contact piece 1321 closer to the first moving contact unit 101 is connected to the seventh static lead-out piece P7, and the second moving contact piece 1321 farther from the first moving contact unit 101 is connected to the eighth static lead-out piece P8.

[0225] In this embodiment, the terminals D6 of the static lead-out piece P6 and the terminals D1 of the static lead-out piece P1 are arranged along the third direction, the terminals D8 of the static lead-out piece P8 and the terminals D3 of the static lead-out piece P3 are arranged along the third direction, the terminals D2 of the static lead-out piece P2 and the terminals D4 of the static lead-out piece P4 are both located between the terminals D6 of the static lead-out piece P6 and the terminals D8 of the static lead-out piece P8 along the first direction, and the terminals D5 of the static lead-out piece P5 and the terminals D7 of the static lead-out piece P7 are both located between the terminals D1 of the static lead-out piece P1 and the terminals D3 of the static lead-out piece P3. Through this structural arrangement, at least one group of two connection terminals for connecting the same end of the circuit can be arranged adjacent to each other, so as to facilitate the realization of parallel connection between them. Compared with the situation where the connection terminals arranged in parallel are separated from each other by other connection terminals, this structural arrangement of the present application is beneficial to reducing the connection difficulty and is also beneficial to making isolation between the non-parallel connection terminals.

[0226] In this embodiment, in the first lead-out unit 103 and the second lead-out unit 104, the connection terminals of the two first static lead-out pieces 111 (i.e., the terminals D1 and D5), the connection terminals of the two second static lead-out pieces (i.e., the terminals D2 and D6), the connection terminals of the two third static lead-out pieces (i.e., the terminals D3 and D7), and the connection terminals of the two fourth static lead-out pieces (i.e., the terminals D4 and D8) are all arranged adjacent to each other in the first direction. Since the first static lead-out piece 111 and the second static lead-out piece 112 are used to connect with the first moving contact component 131 (arranged in the first installation cavity 301), and the third static lead-out piece 113 and the fourth static lead-out piece 114 are used to connect with the second moving contact component 131 (arranged in the second installation cavity 302), therefore, the arrangement of the connection terminals in this embodiment will make each connection terminal correspond to the outer wall of the installation cavity where the corresponding moving contact component 13 is located, thereby being able to reduce the structural complexity of each static lead-out piece and reduce the amount of conductive material required for manufacturing the static lead-out piece.

[0227] Combined Figure 10 As shown, the connection terminals of the first static lead-out piece 111 and the third static lead-out piece 113 located in the middle along the first direction (i.e., the terminals D5 and D7) are used to form a series connection with the connection terminals of the second static lead-out piece 112 and the fourth static lead-out piece 114 located in the middle along the first direction (i.e., the terminals D2 and D4). Based on this arrangement of adjacent connection terminals for series connection, when the relay is applied to the power supply system of the battery pack, the wire length between the series-connected battery packs can be shortened, the line resistance can be reduced, and the energy loss can be reduced, especially in high-current scenarios. In addition, this arrangement can also avoid current deviation caused by uneven line impedance on both sides, so as to improve the balance of the battery pack.

[0228] It should be noted that the connection terminal in the middle is used to achieve the series function, and the connection terminals on both sides are used for parallel connection. This setting helps to flexibly adapt to the expansion requirements of the battery module.

[0229] Furthermore, in combination with Figure 11 As shown, in some embodiments, the relay includes a first isolation member 50, a second isolation member 60, a third isolation member 70, and a fourth isolation member 80. The first isolation member 50, the second isolation member 60, the third isolation member 70, and the fourth isolation member 80 are each connected to one of two lead-out units 10a (for example, the first lead-out unit 101 and the second lead-out unit 102).

[0230] In some embodiments, the first isolation member 50 is connected to one of two first static lead-out plates (i.e., the first static lead-out plate P1 and the fifth static lead-out plate P5); the second isolation member 60 is connected to one of two second static lead-out plates (i.e., the second static lead-out plate P2 and the sixth static lead-out plate P6); the third isolation member 70 is connected to one of two third static lead-out plates (i.e., the third static lead-out plate P3 and the seventh static lead-out plate P7); the fourth isolation member 80 is connected to one of two fourth static lead-out plates (i.e., the fourth static lead-out plate P4 and the eighth static lead-out plate P8).

[0231] The first isolation member 50 is used to electrically isolate the first static lead-out plate P1 and the fifth static lead-out plate P5, that is, the first isolation member 50 increases the creepage distance between the first static lead-out plate P1 and the fifth static lead-out plate P5. The second isolation member 60 is used to electrically isolate the second static lead-out plate P2 and the sixth static lead-out plate P6, that is, the second isolation member 60 increases the creepage distance between the second static lead-out plate P2 and the sixth static lead-out plate P6. The third isolation member 70 is used to electrically isolate the third static lead-out plate P3 and the seventh static lead-out plate P7, that is, the third isolation member 70 increases the creepage distance between the third static lead-out plate P3 and the seventh static lead-out plate P7. The fourth isolation member 80 is used to electrically isolate the fourth static lead-out plate P4 and the eighth static lead-out plate P8, that is, the fourth isolation member 80 increases the creepage distance between the fourth static lead-out plate P4 and the eighth static lead-out plate P8.

[0232] In this embodiment, the first isolation member 50, the second isolation member 60, the third isolation member 70, and the fourth isolation member 80 increase the creepage distance between the connection terminals of different terminals for externally connecting circuits at corresponding positions, thereby improving the reliability of the relay performance.

[0233] The first spacer 50 and the third spacer 70 have a mirror-symmetric structure with a plane perpendicular to the first direction as the symmetry plane. The second spacer 60 and the fourth spacer 80 have a mirror-symmetric structure with a plane perpendicular to the first direction as the symmetry plane. The first static lead piece 111 and the third static lead piece 113 located in the same lead-out unit 10a have a mirror-symmetric structure with a plane perpendicular to the first direction as the symmetry plane. For example, the static lead piece one P1 and the static lead piece three P3 have a mirror-symmetric structure with a plane perpendicular to the first direction as the symmetry plane. For another example, in some embodiments, the static lead piece five P5 and the static lead piece seven P7 have a mirror-symmetric structure with a plane perpendicular to the first direction as the symmetry plane.

[0234] The second static lead piece 112 and the fourth static lead piece 114 located in the same lead-out unit 10a have a mirror-symmetric structure with a plane perpendicular to the first direction as the symmetry plane. For example, the static lead piece two P2 and the static lead piece four P4 have a mirror-symmetric structure with a plane perpendicular to the first direction as the symmetry plane. For another example, in some embodiments, the static lead piece six P6 and the static lead piece eight P8 have a mirror-symmetric structure with a plane perpendicular to the first direction as the symmetry plane.

[0235] In the above embodiments, the setting of the mirror-symmetric structure is beneficial to simplifying the processing difficulty and installation difficulty of each component, and this mirror-symmetric structure is beneficial to the assembly of each structure of the relay and improves the space utilization rate, so as to facilitate the miniaturization of the relay. Moreover, this design is beneficial to simplifying the structure, enabling at least some of the static lead pieces to be shared, thus saving production costs. In addition, it can also ensure that each static lead piece has a balanced current-carrying capacity.

[0236] It should be noted that, as shown in Figure 10 、 Figure 11 and Figure 13 In the embodiment where the relay includes the first lead-out unit 103 and the second lead-out unit 104, the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4 on the mounting base 30 are all in two groups to meet the need for the corresponding static lead pieces in the two groups of lead-out units 10a of the first lead-out unit 103 and the second lead-out unit 104 to be led out from the mounting base 30. The structural settings of the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4 will not be elaborated here.

[0237] Combined with Figure 14 and Figure 15As shown, the first spacer 50 includes a first blocking wall 51 and a second blocking wall 52. The first blocking wall 51 is located between the outer wall surface 30d of the mounting base 30 and the connection terminal of one of the first static lead-out pieces 111 (i.e., the first static lead-out piece P1 or the fifth static lead-out piece P5). That is to say, the first blocking wall 51 can be located between the outer wall surface 30d of the mounting base 30 and the terminal D1, or the first blocking wall 51 can be located between the outer wall surface 30d of the mounting base 30 and the terminal D5. The second blocking wall 52 is connected to the first blocking wall 51. The second blocking wall 52 is located between the connection terminals of the two first static lead-out pieces 111 (i.e., the first static lead-out piece P1 and the fifth static lead-out piece P5) in the first direction. That is to say, the second blocking wall 52 is located between the terminal D1 and the terminal D5, thereby increasing the creepage distance between the connection terminals of the two first static lead-out pieces 111 (i.e., the terminal D1 and the terminal D5) in the first direction. Therefore, in this embodiment, under the shielding of the first blocking wall 51 and the second blocking wall 52, the creepage distance between the side surfaces of the terminal D1 and the terminal D5 facing the outer wall surface 30d of the mounting base 30 is increased.

[0238] The first spacer 50 further includes a third blocking wall 53. The third blocking wall 53 is connected to the inner sides of the first blocking wall 51 and the second blocking wall 52 in the third direction (i.e., the side closer to the center of the mounting base 30 in the third direction). The first blocking wall 51, the second blocking wall 52 and the third blocking wall 53 are connected and jointly enclose a first receiving groove 50a with a first opening. The connection terminal of one of the first static lead-out pieces 111 (i.e., the first static lead-out piece P1 or the fifth static lead-out piece P5) is received in the first receiving groove 50a and exposed from the first opening to the outside of the first spacer 50. In this embodiment, due to the setting of the third blocking wall 53, the creepage distance of the inner sides of the connection terminals of the two first static lead-out pieces 111 (i.e., the terminal D1 and the terminal D5) in the first direction can be increased, avoiding current breakdown at the corner positions of the terminal D1 and the terminal D5. By providing the first opening, the connection terminal at the first receiving groove 50a can be reliably externally connected.

[0239] Combined Figure 16 and Figure 17As shown, the second spacer 60 includes a fourth barrier wall 61 and a fifth barrier wall 62. The fourth barrier wall 61 is located between the outer wall surface 30d of the mounting base 30 and the connection terminal of one of the second static lead-out pieces 112 (i.e., the second static lead-out piece P2 or the sixth static lead-out piece P6). That is to say, the fourth barrier wall 61 can be located between the outer wall surface 30d of the mounting base 30 and the terminal D2, or the fourth barrier wall 61 can be located between the outer wall surface 30d of the mounting base 30 and the terminal D6. The fifth barrier wall 62 is connected to the fourth barrier wall 61. The fifth barrier wall 62 is located between the connection terminals of the two second static lead-out pieces 112 (i.e., the second static lead-out piece P2 and the sixth static lead-out piece P6) in the first direction, thereby increasing the creepage distance between the connection terminals of the two second static lead-out pieces 112 (i.e., the terminal D2 and the terminal D6) in the first direction. Therefore, in this embodiment, under the shielding of the fourth barrier wall 61 and the fifth barrier wall 62, the creepage distance between the terminal D2 and the terminal D6 towards the surface of the outer wall surface 30d of the mounting base 30 is increased.

[0240] The second spacer 60 further includes a sixth barrier wall 63. The sixth barrier wall 63 is connected to the inner sides of the fourth barrier wall 61 and the fifth barrier wall 62 in the third direction. The fourth barrier wall 61, the fifth barrier wall 62 and the sixth barrier wall 63 are connected and jointly enclose a second receiving groove 60a with a second opening. The connection terminal of one of the second static lead-out pieces 112 (i.e., the second static lead-out piece P2 or the sixth static lead-out piece P6) is received in the second receiving groove 60a and exposed from the second opening to the second spacer 60. In this embodiment, due to the setting of the sixth barrier wall 63, the creepage distance of the inner sides of the connection terminals of the two second static lead-out pieces 112 (i.e., the terminal D2 and the terminal D6) in the first direction can be increased, avoiding current breakdown at the corner positions of the terminal D2 and the terminal D6. By providing the second opening, the connection terminal at the second receiving groove 60a can be reliably externally connected.

[0241] Combined again with Figure 10 、 Figure 11 and Figure 13 As shown, based on the mounting base 30, the first grooves C1, the second grooves C2, the third grooves C3 and the fourth grooves C4 are independently provided corresponding to the first lead-out unit 103 and the second lead-out unit 104. The first spacer 50, the second spacer 60, the third spacer 70 and the fourth spacer 80 can be partially structured and disposed in the corresponding grooves. For example, the first spacer 50, the second spacer 60, the third spacer 70 and the fourth spacer 80 are all provided with clamping portions S, and are respectively matched with the first grooves C1, the second grooves C2, the third grooves C3 and the fourth grooves C4 through their respective clamping portions S. In this way, these grooves can be used to conveniently install the corresponding spacers, improving the installation stability of the spacers.

[0242] The clamping part S is used for being connected to the corresponding bending part, and the clamping part S is in limit fit with the relay housing and / or the corresponding bending part in the first direction, the second direction and the third direction.

[0243] Each clamping part S is provided with a clamping groove to cooperate with the corresponding static lead piece through its respective clamping groove. The clamping groove of the clamping part S is used to improve the assembly stability between each spacer and the corresponding static lead piece, so as to enhance the reliability of the relay. It should be noted that the clamping part S only needs to be able to cooperate with the corresponding groove, and no limitation is made here. As long as the clamping groove can clamp a part of the corresponding static lead piece to improve the assembly stability between the spacer and the corresponding static lead piece. The shapes of the clamping part S and the clamping groove are not limited here.

[0244] In some embodiments, the relay further includes two mounting covers; the two mounting covers are respectively fixed to both ends of the mounting seat 30 in the first direction and form a relay housing with the mounting seat 30, and the two mounting covers respectively seal the first mounting port and the second mounting port. The clamping part S is in limit fit with the relay housing and / or the corresponding lead-out unit 10a in the first direction, the second direction and the third direction, thereby improving the mounting stability of the corresponding spacer.

[0245] In some embodiments, in combination Figure 8 、 Figure 9 and Figure 13 As shown, the mounting seat 30 has a first end face 30a and a second end face 30b in the first direction. The first groove C1 and the second groove C2 both extend 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. Moreover, the first groove C1, the second groove C2, the third groove C3 and the fourth groove C4 all extend to the inner wall surface 30c and the outer wall surface 30d of the mounting seat 30, and respectively form inner notch and outer notch on the inner wall surface 30c and the outer wall surface 30d. It can be understood that the inner notch communicates with the inner cavity of the mounting seat 30. Taking the mounting seat 30 having a first mounting cavity 301 and a second mounting cavity 302 as an example, the inner notch C11 of the first groove C1 and the inner notch C21 of the second groove both communicate with the first mounting cavity 301, and the inner notch C31 of the third groove C3 and the inner notch C41 of the fourth groove C4 both communicate with the second mounting cavity 302.

[0246] In some embodiments, the inner notch is located on the side wall of the mounting base 30 parallel to the second direction, and the outer notch is located on the outer wall surface 30d of the mounting base 30 closer to the second moving contact unit 102 in the second direction. In this way, each groove can meet the need for the corresponding static lead-out piece to be led out from the inside of the mounting base 30 to the outside. At the same time, since the first groove C1 is located on the side wall of the mounting base 30 parallel to the second direction, that is to say, the side wall of the mounting base 30 extending parallel to the second direction forms the first groove C1 for accommodating the first static lead-out piece P1 and the fifth static lead-out piece P5, and the side wall corresponding to the static lead-out piece P1 and the fifth static lead-out piece P5 is provided with a thickened part, which is beneficial to reliably support the first static lead-out piece P1 and the fifth static lead-out piece P5 in the second direction and enhance the installation stability of the first static lead-out piece P1 and the fifth static lead-out piece P5. That is to say, this structural setting makes the first static lead-out piece P1 and the fifth static lead-out piece P5 not easily loosen or deform when receiving the contact force of the moving and static contacts 13b in the second direction, thereby improving the reliability of the relay.

[0247] The depth of the inner notch C11 of the first groove C1 and the inner notch C21 of the second groove in the first direction is less than or equal to 1 / 3 of the depth of the first installation cavity 301. The shallow depth of this inner notch makes the side walls of the first installation cavity 301 in the third direction not be divided into at least two relatively independent parts, so that the two side walls in the third direction can maintain good structural strength and are not easily deformed. In addition, it can also prevent at least one of the side walls on the side where the outer surface 30d is located from being separated by the groove extending in the first direction (such as the second groove C2) and losing connection with other parts, and avoid causing the side wall to be deformed due to being unable to bear the contact pressure when the moving contact and the static contact are in contact.

[0248] The depth of the inner notch C31 of the third groove C3 and the inner notch C41 of the fourth groove in the first direction is less than or equal to 1 / 3 of the depth of the second installation cavity 302. The shallow depth of this inner notch makes the side walls of the second installation cavity 302 in the third direction not be divided into at least two relatively independent parts, so that the two side walls in the third direction can maintain good structural strength and are not easily deformed. In addition, it can also prevent at least one of the side walls on the side where the outer surface 30d is located from being separated by the groove extending in the first direction (such as the third groove C3) and losing connection with other parts, and avoid causing the side wall to be deformed due to being unable to bear the contact pressure when the moving contact and the static contact are in contact.

[0249] It should be noted that the outer slot openings C12 of the first groove C1, the outer slot openings C22 of the second groove C2, the outer slot openings C32 of the third groove, and the outer slot openings C42 of the fourth groove C4 are all located outside the outer wall surface 30d of the mounting base 30 that is closer to the contact system 10 in the second direction. In this way, the connection terminals of the respective static lead-out sheets passing through the mounting base 30 from these outer slot openings can be arranged correspondingly in the same plane parallel to the outer wall surface 30d, which is conducive to the miniaturization of the relay. Moreover, the conductive materials consumed by the respective static lead-out sheets for leading out the connection terminals outside the mounting base 30 are reduced, so as to reduce the cost.

[0250] In some other embodiments, as long as the adjacent connection terminals are far enough apart from each other, the adjacent connection terminals may not be insulated.

[0251] It should be noted that the respective static lead-out sheets in the relay are not limited to being bent and led out to the same outer wall surface 30d of the seat body 31.

[0252] For example, in combination with Figure 18 and Figure 19 as shown, the first static lead-out sheet P1, the second static lead-out sheet P2, the third static lead-out sheet P3, the fourth static lead-out sheet P4, the fifth static lead-out sheet P5, the sixth static lead-out sheet P6, the seventh static lead-out sheet P7, and the eighth static lead-out sheet P8 all extend out of the seat body 31 along the third direction. In combination with Figure 21 as shown, the mounting base 30 is provided with corresponding grooves at the positions corresponding to the respective static lead-out sheets. Due to Figure 21 the perspective reason, Figure 21 only two groups of first grooves C1, two groups of second grooves C2, and two groups of fourth grooves C4 are shown in

[0253] Combined with the foregoing embodiment including the third groove C3, in this embodiment, the mounting base 30 is also provided with two groups of third grooves C3 correspondingly. In this way, the respective static lead-out sheets pass through the mounting base 30 from the corresponding grooves. For the structural settings of the respective static lead-out sheets and the respective grooves, no further details will be elaborated here.

[0254] A third external lead-out member 10a3 is connected between the static lead-out piece five P5 and the static lead-out piece seven P7 to form the same lead-out terminal, and a fourth external lead-out member 10a4 is connected between the static lead-out piece six P6 and the static lead-out piece eight P8 to form the same lead-out terminal, so that the first moving contact assembly 131 and the second moving contact assembly 132 of the second contact unit are connected in parallel.

[0255] For the sake of easy understanding, the two side walls of the side wall portion 311 of the seat body 31 opposite to each other in the third direction are hereinafter referred to as the "first side wall 311a" and the "second side wall 311b". In some embodiments, the side wall portion 311 of the seat body 31 further includes a third side wall 311c and a fourth side wall 311d, and the third side wall 311c and the fourth side wall 311d are oppositely arranged in the second direction. Both ends of the third side wall 311c are connected to the first side wall 311a and the second side wall 311b, and both ends of the fourth side wall 311d are connected to the first side wall 311a and the second side wall 311b. Thus, the space commonly enclosed by the first side wall 311a, the second side wall 311b, the third side wall 311c and the fourth side wall 311d is the space enclosed by the seat body 31.

[0256] It should be noted that based on the fact that the first moving contact assembly 131 and the second moving contact assembly 132 are arranged in parallel in the second switching state, therefore, for the same lead-out unit 10a, since the first static lead-out piece 111 and the third static lead-out piece 113 need to be connected to the same load terminal of an external device. For example, the first static lead-out piece 111 and the third static lead-out piece 113 are connected by a first external lead-out member 10a1, and the first external lead-out member 10a1 or one of the first static lead-out piece 111 and the third static lead-out piece 113 can be used to connect to the load terminal of the external device. Correspondingly, since the second static lead-out piece 112 and the fourth static lead-out piece 114 need to be connected to another load terminal of the external device, for example, the second static lead-out piece 112 and the fourth static lead-out piece 114 are connected by a second external lead-out member 10a2, and the second external lead-out member 10a2 or one of the second static lead-out piece 112 and the fourth static lead-out piece 114 can be used to connect to another load terminal of the external device.

[0257] In some embodiments, when both the first movable contact unit 101 and the second movable contact unit 102 are in the first switch state, two adjacent movable contact pieces 13a in the first lead-out unit 103 and the second movable contact unit 102 are connected in parallel with each other. That is to say, the movable contact piece 13a in the first movable contact unit 101 that is closer to the second movable contact unit 102 and the movable contact piece 13a in the second movable contact unit 102 that is closer to the first movable contact unit 101 are connected in parallel with each other. In this way, the second static lead-out piece 112 in the first lead-out unit 103 is electrically connected to the first static lead-out piece 111 of the second lead-out unit 104, and the fourth static lead-out piece 114 in the first lead-out unit 103 is electrically connected to the third static lead-out piece 113 of the second lead-out unit 104. Since the second static lead-out piece 112 and the fourth static lead-out piece 114 in the first lead-out unit 103 are connected by the second external lead-out member 10a2, and the first static lead-out piece 111 and the third static lead-out piece 113 in the second lead-out unit 104 are connected by the third external lead-out member 10a3. Therefore, in this embodiment, by using the fact that both the first movable contact unit 101 and the second movable contact unit 102 are in the first switch state, and two adjacent movable contact pieces 13a in the first lead-out unit 103 and the second movable contact unit 102 are connected in parallel with each other, 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 is achieved.

[0258] When both the first movable contact unit 101 and the second movable contact unit 102 are in the second switch state, the first static lead-out assembly 11 and the second static lead-out assembly 12 of the first lead-out unit 103 are electrically connected through the first movable contact unit 101. That is, in the first lead-out unit 103, the first external lead-out member 10a1 corresponding to the first static lead-out assembly 11 is connected in series with the second external lead-out member 10a2 corresponding to the second static lead-out assembly 12.

[0259] Correspondingly, the first static lead-out assembly 11 and the second static lead-out assembly 12 of the second lead-out unit 104 are electrically connected through the second movable contact unit 102. That is, in the second lead-out unit 104, the third external lead-out member 10a3 corresponding to the first static lead-out assembly 11 is connected in series with the fourth external lead-out member 10a4 corresponding to the second static lead-out assembly 12. In this way, in this second switch state, there are two independent conduction paths in the contact system 10. In actual application, when the first external lead-out member 10a1 corresponding to the first lead-out unit 103 and the third external lead-out member 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 member 10a2 corresponding to the first lead-out unit 103 and the fourth external lead-out member 10a4 corresponding to the second lead-out unit 104 are connected to the other same end of the external circuit, these two conduction paths are arranged in parallel.

[0260] Therefore, in the embodiments of the present application, the relay can achieve series-parallel switching, thus having a wider application scenario.

[0261] The relay is not limited to being provided with two or more moving contact units 10b. For example, the relay is provided with one moving contact unit 10b. In this way, the third external lead-out member 10a3 and the fourth external lead-out member 10a4 provided corresponding to the second moving contact unit 102 can be omitted.

[0262] When the relay is provided with one moving contact unit 10a, the number of the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 can all be one, and all penetrate out of the seat body 31 along the third direction. Further, both the first static lead-out piece 111 and the third static lead-out piece 113 penetrate out of the first side wall 311a along the third direction, and are connected to each other through the first external lead-out member 10a1. Both the second static lead-out piece 112 and the fourth static lead-out piece 114 penetrate out of the side wall on the other side of the mounting seat 30 along the third direction, and are connected to each other through the second external lead-out member 10a2.

[0263] In the second switch state, the first static lead-out piece 111 is electrically conducted with the second static lead-out piece 112 through the first moving contact assembly 131, and the third static lead-out piece 113 is electrically conducted with the fourth static lead-out piece 114 through the second moving contact assembly 132. The first static lead-out piece 111 and the third static lead-out piece 113 are connected through the first external lead-out member 10a1, and the second static lead-out piece 112 and the fourth static lead-out piece 114 are connected through the second external lead-out member 10a2, so that 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.

[0264] Combined with Figure 19As shown, the first static lead-out piece 111 and the second static lead-out piece 112 are provided with a limit and cooperation part ST extending along the second direction. The limit and cooperation part ST cooperates with the mounting seat 30 and is limited in the third direction by the mounting seat 30. Thereby, it is prevented that the corresponding static lead-out piece moves relative to the mounting seat 30 in the third direction and becomes loose or disengages from the mounting seat 30, improving the mounting stability of the static lead-out piece on the side wall of the mounting seat 30. Understandably, the third static lead-out piece 113 and the fourth static lead-out piece 114 can also be provided with a limit and cooperation part ST to cooperate with the mounting seat 30, thereby improving the stability in the third direction. Of course, in some embodiments, at least one of the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 is provided with a limit and cooperation part ST, so that the corresponding static lead-out piece can cooperate with the mounting seat 30 through the limit and cooperation part ST, and the stability of the static lead-out piece can be improved. Thus, compared with the situation where none of the static lead-out pieces is provided with a limit and cooperation part ST, the stability of some static lead-out pieces in the relay can also be improved. Since the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 are respectively and correspondingly fitted into the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4. In this way, these grooves play a good limiting effect on the corresponding static lead-out pieces in the first direction and the second direction.

[0265] Combined with Figure 20 As shown, in some embodiments, the coil assembly 21 includes at least two coil windings 211 arranged along the first direction. While arranging a plurality of moving contact assemblies 13 in the space of the first direction, the height of the moving contact unit 10b in the first direction will increase accordingly. Therefore, in this embodiment, the coil assembly 21 is set to include at least two coil windings 211 arranged along the first direction, so that more coil windings 211 can be arranged by using the space of the first direction, improving the space utilization rate in the first direction at the position where the coil assembly 21 is arranged. Without changing the total number of turns of the coil, this design is beneficial to reducing the projected area of the coil assembly 21 on the surface perpendicular to the first direction, so as to realize the miniaturization of the relay.

[0266] Furthermore, the size of the coil winding 211 in the second direction is less than or equal to the size of the coil winding 211 in the first direction. In this way, the coil winding 211 can reduce the occupation of space in the second direction and increase the space utilization rate in the first direction, making the layout of the coil winding 211 and the moving contact unit 10b more reasonable in the first direction, which is beneficial to the miniaturization of the relay.

[0267] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0268] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A relay, characterized in that: A contact system is included, the contact system comprising: The lead-out unit comprises a first static lead-out assembly and a second static lead-out assembly; A movable contact unit, comprising a plurality of movable contact components, wherein the plurality of movable contact components are arranged along a first direction, and the movable contact unit is configured to be switchable between a first switch state and a second switch state; Among them, in the first switching state, multiple moving contact components all disconnect the electrical path between the first static lead-out component and the second static lead-out component; in the second switching state, multiple moving contact components are connected in parallel with each other and all conduct the electrical path between the first static lead-out component and the second static lead-out component, and at least one moving contact component is arranged with at least two parallel branches in a plane intersecting the first direction.

2. The relay according to claim 1, characterized in that: In the same moving contact assembly, at least one of the parallel branches is arranged along a second direction with another parallel branch, and the second direction intersects with the first direction.

3. The relay according to claim 2, characterized in that: The first direction and the second direction are perpendicular to each other.

4. The relay according to claim 3, characterized in that: The first static lead-out component and the second static lead-out component are respectively arranged on both sides of the dynamic contact unit along the third direction, the dynamic contact component has an action direction, the action direction of the dynamic contact component is parallel to the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

5. The relay according to claim 1, characterized in that: The contact system includes at least two moving contact units and at least two lead-out units corresponding to each moving contact unit, each moving contact unit is arranged along a second direction, and the second direction is perpendicular to the first direction; when each moving contact unit is in the first switching state, it is electrically connected with the adjacent moving contact units respectively, so that in the two lead-out units corresponding to the two adjacent moving contact units, the first static lead-out component of one lead-out unit and the second static lead-out component of the other lead-out unit are connected in series with each other; when each moving contact unit is in the second switching state, each lead-out unit is disconnected from each other.

6. The relay according to claim 1, characterized in that: The moving contact assembly includes two moving contacts, which are arranged in a plane perpendicular to the first direction. In the first switch state, the two moving contacts of the moving contact assembly are separated from each other to disconnect the electrical path between the first static lead-out assembly and the second static lead-out assembly; in the second switch state, the two moving contacts of the moving contact assembly are electrically contacted and both constitute the parallel branch to conduct the electrical path between the first static lead-out assembly and the second static lead-out assembly; Wherein, the movable contact assembly is configured such that: when switching between the first switch state and the second switch state, the two movable contacts of the movable contact assembly move in opposite directions; Alternatively, the movable contact assembly is configured such that: when switching between the first switch state and the second switch state, the two movable contacts of the movable contact assembly move in the same direction.

7. The relay according to any one of claims 1 to 4, characterized in that: The moving contact unit includes two moving contact components.

8. The relay according to claim 7, characterized in that: Each of the moving contact components includes two moving contacts, and the two moving contacts are arranged along a second direction perpendicular to the first direction. The moving contacts have a fixed end and a swinging end, wherein the fixed end of one of the moving contacts is fixed to the first static lead-out component, and the fixed end of the other moving contact is fixed to the second static lead-out component; and in the two moving contacts of the same moving contact component, when the two swinging ends are respectively electrically contacted with the fixed end of the other moving contact along the second direction, the two moving contacts form the parallel branch to conduct the electrical path between the first static lead-out component and the second static lead-out component, and when the two swinging ends are away from the fixed end of the other moving contact along the second direction, the two moving contacts disconnect the electrical path between the first static lead-out component and the second static lead-out component.

9. The relay according to claim 8, characterized in that: The fixed end of the moving contact is provided with a static contact, and the swinging end of the moving contact is provided with a moving contact; in the same moving contact assembly, the static contact and the moving contact of one of the moving contacts respectively correspond to the moving contact and the static contact of the other moving contact, and in the two moving contacts, the two moving contacts can contact or separate from the corresponding static contacts under the drive of the corresponding swinging end.

10. The relay according to claim 8, characterized in that: In at least one of the moving contact components, the two moving contacts each include a plurality of flow guide branches and the flow guide branches on the two moving contacts correspond one to one, the plurality of flow guide branches on the moving contact are arranged along the first direction, and are configured to be connected in parallel when the first static lead-out component and the second static lead-out component are electrically conductive and to be connected in parallel with each of the flow guide branches on the other moving contact.

11. The relay according to claim 10, characterized in that: The movable contact is an integral structural member, and is provided with a partition slit, which divides the movable contact into a plurality of the flow guide branches; and / or, the number of the flow guide branches on each of the movable contacts is three.

12. The relay according to claim 8, characterized in that The relay further comprises an electromagnetic system and a driving mechanism, wherein the driving mechanism is connected between the electromagnetic system and the contact system along the second direction, and the driving mechanism is used for driving the two moving contact components to move synchronously under the driving of the electromagnetic system.

13. The relay according to claim 12, characterized in that: The electromagnetic system includes a coil assembly; the coil assembly includes at least two coil windings arranged along the first direction; the size of the coil winding in the second direction is less than or equal to the size of the coil winding in the first direction.

14. The relay according to claim 12, characterized in that: The pushing mechanism includes a first group of pushing cards and a second group of pushing cards, the first group of pushing cards and the second group of pushing cards are arranged along the first direction, the first group of pushing cards includes two first pushing cards, and the two first pushing cards are respectively connected to the swinging ends of the two moving contacts of one of the moving contact components; the second group of pushing cards includes two second pushing cards, and the two second pushing cards are respectively connected to the swinging ends of the two moving contacts of the other moving contact component.

15. The relay according to claim 14, characterized in that: The electromagnetic system includes a coil assembly and an armature assembly, and the armature assembly includes a first connecting arm and a second connecting arm. The armature assembly can rotate around a rotating axis parallel to the first direction based on the change in polarity of the coil assembly, so that the driving end of the first connecting arm and the driving end of the second connecting arm move in opposite directions, and one end of the two first push cards away from one of the moving contact assemblies is respectively connected to the driving end of the first connecting arm and the driving end of the second connecting arm, and one end of the two second push cards away from the other moving contact assembly is respectively connected to the driving end of the first connecting arm and the driving end of the second connecting arm.

16. The relay according to claim 15, characterized in that The armature assembly is located between the coil assembly and the contact system along the second direction, the first connecting arm and the second connecting arm are located on the side of the armature assembly facing away from the coil assembly along the second direction, the driving end of the first connecting arm and the driving end of the second connecting arm are respectively located on both sides of the armature assembly along the third direction; the first direction, the second direction and the third direction are perpendicular to each other.

17. The relay according to claim 7, characterized in that: The first static lead-out assembly includes two static lead-out pieces arranged along the first direction, namely, a first static lead-out piece and a third static lead-out piece, and the second static lead-out assembly includes two static lead-out pieces arranged along the first direction, namely, a second static lead-out piece and a fourth static lead-out piece; In the first switch state, one of the moving contact components disconnects the electrical path between the first static lead-out piece and the second static lead-out piece, and the other moving contact component disconnects the electrical path between the third static lead-out piece and the fourth static lead-out piece; in the second switch state, one of the moving contact components conducts the electrical path between the first static lead-out piece and the second static lead-out piece, and the other moving contact component conducts the electrical path between the third static lead-out piece and the fourth static lead-out piece.

18. The relay according to claim 17, characterized in that: The relay includes a mounting seat, and the mounting seat includes a first mounting cavity and a second mounting cavity arranged 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 two ends of the mounting seat in the first direction, and the two moving contact components are respectively a first moving contact component and a second moving contact component, the first moving contact component can be installed from the first mounting opening to the first mounting cavity, and the second moving contact component can be installed from the second mounting opening to the second mounting cavity.

19. The relay according to claim 18, characterized in that The mounting seat includes a seat body and a first mounting plate, wherein the first mounting plate is connected to the inner wall of the seat body; in the first direction, the first mounting cavity is located on one side of the first mounting plate, and the second mounting cavity is located on the other side of the first mounting plate.

20. The relay according to claim 19, characterized in that The relay also includes an electromagnetic system and a driving mechanism, wherein the driving mechanism is connected between the electromagnetic system and the contact system along a second direction perpendicular to the first direction, and the driving mechanism is used to drive each of the moving contact components to move synchronously under the drive of the electromagnetic system; the driving mechanism includes two groups of driving cards, the two groups of driving cards are arranged along the first direction, and are respectively connected to each of the moving contact components arranged along the first direction.

21. The relay according to claim 20, characterized in that The electromagnetic system includes a coil assembly and an armature assembly, wherein the armature assembly is used to move based on the change in polarity of the coil assembly and drive each of the movable contact assemblies to move synchronously through each group of the push cards; the electromagnetic system can be installed into the seat body from one end of the mounting seat along the first direction.

22. The relay according to claim 21, characterized in that The mounting seat also includes a second mounting plate, which is connected to the first mounting plate, and the second mounting plate separates the space enclosed by the seat body into a third mounting cavity. One end of the second mounting plate in the first direction is enclosed by a portion of the side wall of the seat body to form a third mounting opening. In the second direction, the first mounting cavity and the second mounting cavity are both located on one side of the second mounting plate, and the third mounting cavity is located on the other side of the second mounting plate. The coil assembly and the armature assembly can be installed from the third mounting opening to the third mounting cavity along the first direction.

23. The relay according to claim 22, characterized in that The seat body includes a side wall portion and a bottom wall portion, the bottom wall portion is connected to the side wall portion and the second mounting plate, the bottom wall portion, the second mounting plate and partial structure of the side wall portion together enclose the third mounting cavity, and another partial structure of the side wall portion, the first mounting plate and the second mounting plate enclose the first mounting cavity and the second mounting cavity; wherein the bottom wall portion is parallel to the first mounting plate, and the coil assembly and the armature assembly are both connected to the bottom wall portion.

24. The relay according to claim 19, characterized in that The mounting seat is provided with a first groove, a second groove, a third groove and a fourth groove, the first groove and the second groove are respectively located on the opposite side walls of the first mounting cavity in the third direction, and both extend along the first direction to an end of the mounting seat where the first mounting opening is provided, the third groove and the fourth groove are respectively located on the opposite side walls of the second mounting cavity in the third direction, and both extend along the first direction to an end of the mounting seat where the second mounting opening is provided; wherein the third direction is perpendicular to the first direction and the second direction, and the first static lead-out piece, the second static lead-out piece, the third static lead-out piece and the fourth static lead-out piece are correspondingly penetrated through the first groove, the second groove, the third groove and the fourth groove.

25. The relay according to claim 24, characterized in that At the inner wall corresponding to the mounting seat, the depth of the notches of the first groove and the second groove connected to the first mounting cavity is less than or equal to 1 / 3 of the depth of the first mounting cavity, and the depth of the notches of the third groove and the fourth groove connected to the second mounting cavity is less than or equal to 1 / 3 of the depth of the second mounting cavity.

26. The relay according to claim 24, characterized in that The lead-out unit also includes a first external lead-out piece and a second external lead-out piece, the first static lead-out piece and the third static lead-out piece both pass through the side wall on one side of the mounting seat along the third direction, and the two are connected by the first external lead-out piece; the second static lead-out piece and the fourth static lead-out piece both pass through the side wall on the other side of the mounting seat along the third direction, and the two are connected by the second external lead-out piece.

27. The relay according to claim 24, characterized in that The first static lead-out piece, the second static lead-out piece, the third static lead-out piece and the fourth static lead-out piece all have a bending portion, and lead out the connecting terminals through the respective bending portions along the second direction to the side where the outer wall surface of the mounting seat is located, and all the connecting terminals are arranged in the same plane parallel to the first direction and the third direction.

28. The relay according to claim 27, characterized in that All of the connection terminals are located outside the outer wall surface of the mounting seat that is closer to the contact system in the second direction; And / or, the two side walls of the mounting seat in the third direction are respectively provided with shielding walls, and each of the shielding walls correspondingly shields each of the bending portions.

29. The relay according to claim 27, characterized in that The contact system comprises at least two moving contact units and at least two lead-out units corresponding to each moving contact unit, each moving contact unit is arranged along the second direction, and when each moving contact unit is in the first switching state, each moving contact unit 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 two static lead-out pieces of the first static lead-out component in one of the lead-out units are connected in series with the two static lead-out pieces of the second static lead-out component in the other lead-out unit, and when each moving contact unit is in the second switching state, each lead-out unit is disconnected from each other; All the connection terminals of the two lead-out units are located outside the outer wall surface of the mounting seat that is closer to the contact system in the second direction; The connecting terminals of the first static lead-out piece and the third static lead-out piece of one of the lead-out units are arranged between the connecting terminals of the first static lead-out piece and the third static lead-out piece of another of the lead-out units along the first direction, and the connecting terminals of the second static lead-out piece and the fourth static lead-out piece of one of the lead-out units are arranged between the connecting terminals of the second static lead-out piece and the fourth static lead-out piece of another of the lead-out units along the first direction.

30. The relay according to claim 29, characterized in that The number of the moving contact units and the number of the lead-out units are both two.

31. The relay according to claim 30, characterized in that The connecting terminals of the first and third static lead-out pieces located in the middle along the first direction are used to form a series connection with the connecting terminals of the second and fourth static lead-out pieces located in the middle along the first direction in the first switch state.

32. The relay according to claim 30, characterized in that The relay comprises a first isolating member, a second isolating member, a third isolating member and a fourth isolating member; Wherein, the first isolating member is connected to one of the two first static lead-out sheets and electrically isolates the two first static lead-out sheets; The second isolating member is connected to one of the two second static lead-out plates and electrically isolates the two second static lead-out plates; The third isolating member is connected to one of the two third static lead-out plates and electrically isolates the two third static lead-out plates; The fourth isolating member is connected to one of the two fourth static lead-out plates and electrically isolates the two fourth static lead-out plates.

33. The relay according to claim 32, characterized in that The first isolating member includes a first barrier wall and a second barrier wall, the first barrier wall being located between the outer wall surface of the mounting seat and one of the connecting terminals of the first static lead-out pieces, the second barrier wall being connected to the first barrier wall, and the second barrier wall being located between the connecting terminals of two of the first static lead-out pieces along the first direction.

34. The relay according to claim 33, characterized in that The first isolating member also includes a third baffle wall, which is connected to the inner side of the first baffle wall and the second baffle wall in the third direction, and the first baffle wall, the second baffle wall and the third baffle wall together enclose a first receiving groove having a first opening, wherein one of the connecting terminals of the first static lead-out piece is received in the first receiving groove and exposed to the first isolating member from the first opening.

35. The relay according to claim 32, characterized in that The second isolating member includes a fourth barrier wall and a fifth barrier wall, the fourth barrier wall being located between the outer wall surface of the mounting seat and one of the connecting terminals of the second static lead-out pieces, the fifth barrier wall being connected to the fourth barrier wall, and the fifth barrier wall being located between the connecting terminals of two of the second static lead-out pieces along the first direction.

36. The relay according to claim 35, characterized in that The second isolating member also includes a sixth baffle wall, which is connected to the inner side of the fourth baffle wall and the fifth baffle wall in the third direction, and the fourth baffle wall, the fifth baffle wall and the sixth baffle wall together enclose a second receiving groove having a second opening, wherein one of the connection terminals of the second static lead-out piece is received in the second receiving groove and exposed from the second opening to the second isolating member.

37. The relay according to claim 32, characterized in that Also includes at least one of the following technical solutions: The first isolating member and the third isolating member are in a mirror-symmetrical structure with a plane perpendicular to the first direction as a symmetry plane; Alternatively, the second isolating member and the fourth isolating member are in a mirror-symmetrical structure with a plane perpendicular to the first direction as a symmetry plane; Alternatively, the first static lead-out piece and the third static lead-out piece located in the same lead-out unit are in a mirror-symmetrical structure with a plane perpendicular to the first direction as a symmetry plane; Alternatively, the second static lead-out piece and the fourth static lead-out piece located in the same lead-out unit are in a mirror-symmetrical structure with a plane perpendicular to the first direction as a symmetry plane.

38. The relay according to claim 32, characterized in that It also includes two installation covers; the two installation covers are respectively fixed to the two ends of the mounting base along the first direction and form a relay housing with the mounting base, and cover the first mounting port and the second mounting port, the first isolating member, the second isolating member, the third isolating member and the fourth isolating member are all provided with a clamping portion, the clamping portion is used to be assembled with the corresponding bending portion, and the clamping portion is limitedly matched with the relay housing and / or the corresponding bending portion along the first direction, the second direction and the third direction.

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