relay

Abstract

The application relates to a relay, comprising a contact system, the contact system comprising a leading-out unit and a moving contact unit, the leading-out unit comprising a first static leading-out component and a second static leading-out component, the moving contact unit comprising a plurality of moving contact components, the plurality of moving contact components being arranged along a first direction, the moving contact unit being configured to be capable of switching between a first switching state and a second switching state; wherein in the first switching state, the plurality of moving contact components are all disconnected from an electrical path between the first static leading-out component and the second static leading-out component; in the second switching state, the plurality of moving contact components are all connected in parallel with each other and are all connected to the electrical path between the first static leading-out component and the second static leading-out component, and at least one moving contact component is arranged with at least two parallel branches in a plane intersecting the first direction. The relay of the application can reduce the contact resistance while realizing miniaturization.

Description

Technical Field

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

[0002] As an electronic control device, a relay has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits and is essentially an "automatic switch" that uses a smaller current to control a larger current. Therefore, relays play roles in automatic adjustment, safety protection, and circuit switching, and are widely used in industrial control, home appliances, and automobiles. With the increasing application of relays in various products, customers have placed more demands on their performance. For example, they require relays to have lower contact resistance.

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

[0004] However, in existing relays, the number of contacts arranged 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 pattern 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 narrow installation environment. Utility Model Content

[0005] Therefore, it is necessary to provide a relay that addresses the issue of how to reduce contact resistance while achieving miniaturization.

[0006] This application provides a relay, including a contact system, the contact system comprising:

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

[0008] A movable touch unit includes a plurality of movable touch components arranged along a first direction, and the movable touch unit is configured to switch between a first switch state and a second switch state.

[0009] In the first switching state, all of the moving contact components disconnect the electrical path between the first stationary lead-out component and the second stationary lead-out component; in the second switching state, all of the moving contact components are connected in parallel and all of them conduct the electrical path between the first stationary lead-out component and the second stationary lead-out component, and at least one of the moving contact components has at least two parallel branches arranged in a plane intersecting the first direction.

[0010] In the aforementioned relay, because in the second switching state, multiple moving contact components all conduct the electrical path between the first and second stationary lead-out components, and these multiple moving contact components are connected in parallel, this helps to reduce contact resistance. Furthermore, since the multiple moving contact components are arranged along the first direction, a parallel structure is achieved in the first direction. Because at least one moving contact component has at least two parallel branches arranged in a plane intersecting the first direction, the parallel structure is expanded using the plane intersecting the first direction. Simultaneously, the parallel structure is set in two spatial dimensions, which increases the number of parallel paths while avoiding excessive volume in one direction, thus preventing the relay from becoming too large. Therefore, the relay of this application achieves miniaturization while significantly reducing contact resistance, thus meeting usage requirements.

[0011] In some embodiments, within the same moving contact assembly, at least one of the parallel branches is arranged along a second direction, which intersects the first direction. This allows the relay to simultaneously extend its parallel structure in both the first and second directions, thereby reducing contact resistance and preventing the parallel structure from occupying too much volume in one direction, which would result in an excessively large relay size. Since the parallel branches are arranged along the second direction without intersecting, the size of each parallel branch can be freely adjusted as needed. For example, to adapt to high-voltage or high-current scenarios, the size can be appropriately increased to obtain a greater current-carrying capacity.

[0012] In some embodiments, the first direction and the second direction are perpendicular to each other. In this way, the parallel branches can be arranged in two mutually perpendicular dimensions. This structure helps to improve the utilization of the mounting space of the moving contact component in the relay, so that the overall shape of the relay can be made more square (for example, the overall appearance of the relay can be cubic except for the necessary lead-out structure), thus achieving miniaturization.

[0013] In some embodiments, the first static lead-out component and the second static lead-out component are respectively arranged on both sides of the moving contact unit along a third direction. The moving contact component has an operating direction, which is parallel to a second direction, and the first direction, the second direction, and the third direction are perpendicular to each other. With this structural arrangement, the moving contact unit is compactly arranged to reduce space waste, thereby facilitating miniaturization. Since the moving contact component moves in a direction parallel to the second direction, two parallel branches within the same moving contact component can be connected in parallel through contact with each other. This avoids the need for each parallel branch to contact or disconnect from the first and second stationary leads separately, reducing the area and material consumption of the first and second stationary leads, and further facilitating the miniaturization of the relay. In addition, the movement of each moving contact component in the second direction also allows the electromagnetic system used to drive the movement of each moving contact component to be configured on the same side of each moving contact component along the second direction. That is, the electromagnetic system can face each moving contact component simultaneously in the second direction and easily establish an assembly relationship and form a linkage with each moving contact component. Moreover, it can avoid the electromagnetic system occupying too much space in the first direction due to being staggered from the moving contact unit in the first direction. Thus, 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 easily controlled as needed.

[0014] In some embodiments, 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 perpendicular to the first direction. When each moving contact unit is in the first switching state, it is electrically connected to an adjacent moving contact unit. This is such that in the two lead-out units corresponding to the two adjacent moving contact units, the first static lead-out component of one lead-out unit is connected in series with the second static lead-out component of the other lead-out unit. When each moving contact unit is in the second switching state, each lead-out unit is disconnected from each other. This allows the contact system to switch between series and parallel connections to adapt to certain special application scenarios, such as in automotive battery management systems to optimize the charging and discharging functions of the battery pack.

[0015] In some embodiments, the movable contact assembly includes two movable contacts arranged in a plane perpendicular to the first direction. In the first switching state, the two movable contacts of the movable contact assembly are separated to disconnect the electrical path between the first stationary lead-out assembly and the second stationary lead-out assembly. In the second switching state, the two movable contacts of the movable contact assembly are electrically in contact and both constitute the parallel branch to conduct the electrical path between the first stationary lead-out assembly and the second stationary lead-out assembly. The movable contact assembly is configured such that, when switching between the first switching state and the second switching state, the two movable contacts of the movable contact assembly move in opposite directions; or, the movable contact assembly is configured such that, when switching between the first switching state and the second switching state, the two movable contacts of the movable contact assembly move in the same direction. In this way, the switching of the moving contact component between the first and second switch states can be used to adapt to the needs of relay use. In the second switch state, the moving contact unit uses multiple moving contact components to expand parallel branches in the first direction, and multiple current-guiding branches can be used to expand parallel branches inside the moving contact component in the first direction, which helps to reduce contact resistance.

[0016] In some embodiments, the moving contact unit includes two moving contact components. In conventional technology, the moving contact unit and the lead-out unit are typically installed within a relay housing. The relay housing has an opening, and the first and second stationary lead-out components of the lead-out unit are typically inserted into the relay housing through this opening and penetrate the sidewall of the relay housing. Furthermore, if all moving contact components and lead-out units are inserted into the relay housing along the same opening, then a relatively deep groove needs to be formed in the relay housing to allow all the first and second stationary lead-out components to penetrate. This significantly weakens the strength of the relay housing sidewall, making it prone to bending and potentially affecting the contact assembly accuracy as well as the overall structural strength and stability of the relay. In some embodiments proposed in this application, since there are two moving contact components, two independent chambers are provided for the relay housing to accommodate the two sets of moving contact components and to provide a foundation for the two sets of lead-out units. Each chamber can be provided with a groove for the lead-out units to pass through, so that the groove depth on the side wall of the relay housing is reduced to half or even more of the original depth, thereby effectively improving the bending strength of the side wall of the relay housing. In addition, it is also beneficial to fix and support the two sets of moving contact components separately by configuring more sufficient mounting structures in the independent chambers, thereby improving the stability of the moving contact components and achieving physical isolation and independent stress bearing.

[0017] In some embodiments, each of the moving contact components includes two moving contacts arranged along a second direction perpendicular to the first direction. Each moving contact has a fixed end and a swinging end. The fixed end of one moving contact is fixed to the first stationary lead-out component, and the fixed end of the other moving contact is fixed to the second stationary lead-out component. When the two swinging ends of the two moving contacts of the same moving contact component are electrically in contact 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 stationary lead-out component and the second stationary lead-out component. When the two swinging ends are both 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 stationary lead-out component and the second stationary lead-out component. In this embodiment, on the one hand, two moving contacts are arranged along a second direction perpendicular to the first direction; on the other hand, the two moving contacts are used to form a parallel branch by contacting each other to conduct the electrical path between the first and second stationary lead-out components. This reduces contact resistance and expands the parallel structure in both the first and second spatial dimensions, facilitating miniaturization. Both moving contacts use oscillating springs with fixed and oscillating ends, achieving a simple parallel structure while utilizing the electromagnetic force generated between them when current flows through them to increase contact pressure and enhance the ability to withstand high fault currents.

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

[0019] In some embodiments, the moving contact is a single structural component, and the moving contact has a slit that divides the moving contact into multiple flow-guiding branches; and / or, each moving contact has three flow-guiding branches. The structure of each moving contact forming flow-guiding branches is simple and easy to implement. By setting the number of flow-guiding branches on each moving contact to three, the requirement of ultra-low contact resistance can be met, redundant design can be avoided, and structural complexity can be reduced.

[0020] In some embodiments, the relay further includes an electromagnetic system and a driving mechanism. The driving mechanism is connected between the electromagnetic system and the contact system along the second direction. The driving mechanism is used to drive the two moving contact components to operate synchronously under the drive of the electromagnetic system. This causes the moving contact unit to switch between a first switching state and a second switching state. Since the driving 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 component simultaneously in the second direction and can easily establish an assembly relationship and form a linkage with each moving contact component. Moreover, it avoids occupying too much space in the first direction, further contributing to the miniaturization design of the relay.

[0021] In some embodiments, the coil assembly includes at least two coil windings arranged along the first direction, wherein the dimension of the coil windings in the second direction is less than or equal to the dimension of the coil windings in the first direction. Since the contact system occupies a large amount of space in the first direction, utilizing the space in the first direction to accommodate more coil windings improves the space utilization rate in the first direction. With the total number of coil turns remaining constant, this design helps reduce the projected area of ​​the coil assembly on the surface perpendicular to the first direction, thereby enabling relay miniaturization. Furthermore, since the dimension of the coil windings in the second direction is less than or equal to the dimension of the coil windings in the first direction, the space occupied by the coil windings in the second direction can be reduced, while increasing the space utilization rate in the first direction. This allows for a more rational layout of the coil windings and the moving contact unit in the first direction, facilitating relay miniaturization.

[0022] In some embodiments, the pushing mechanism includes a first set of pushing cards and a second set of pushing cards, arranged along the first direction. The first set of pushing cards includes two first pushing cards, each connected to the swinging end of one of the two moving contacts of one of the moving contact components. The second set of pushing cards includes two second pushing cards, each connected to the swinging end of one of the two moving contacts of another moving contact component. When multiple sets of moving contact components need to be driven simultaneously along the first direction, the technical solution of this embodiment avoids the problem of excessively large pushing cards along the first direction, which could easily deform or break, thus improving the reliability of the pushing mechanism in driving 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 is rotatable about an axis parallel to the first direction based on a change in the polarity of the coil assembly, such that the driving ends of the first and second connecting arms move in opposite directions. The ends of the two first pushers away from one of the moving contact components are respectively connected to the driving ends of the first and second connecting arms. The ends of the two second pushers away from the other moving contact component are respectively connected to the driving ends of the first and second connecting arms. Thus, the rotation of the armature assembly about the axis drives the two moving contacts in the moving contact assembly to either contact or disconnect from each other.

[0024] In some embodiments, the armature assembly is located between the coil assembly and the contact system along a 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 ends of the first connecting arm and the second connecting arm are respectively located on both sides of the armature assembly along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. Because the armature assembly is located between the coil assembly and the contact system along the second direction, and the first and second connecting arms are located closer to the contact system, the arrangement is more compact and occupies less space. The required design length of each first push card and each second push card along the second direction is smaller, and the strength is higher, further improving the reliability of each first push card and each second push card in driving such a large contact system.

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

[0026] In some embodiments, the relay includes a mounting base, which 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 opposite ends of the mounting base in the first direction. The two moving contact components are a first moving contact component and a second moving contact component, respectively. The first moving contact component can be installed into the first mounting cavity from the first mounting opening, and the second moving contact component can be installed into the second mounting cavity from the second mounting opening. Since the first mounting opening and the second mounting opening are located at opposite ends of the mounting base in the first direction, and the first moving contact component and the second moving contact component are respectively installed into the mounting base from the first mounting opening and the second mounting opening, the ease of installation is improved. The sidewall of the mounting base can have independent grooves for the positions of the first moving contact component and the second moving contact component to accommodate the need for the corresponding stationary lead-out piece to be led out from the mounting base. Compared to the first and second moving contact components being integrated into a single groove, this embodiment uses separate grooves to house the first and second moving contact components. This reduces the depth of the grooves, preventing them from becoming too deep and causing at least one side of the mounting base's sidewall to become an isolated, unsupported structure. Therefore, this embodiment improves the structural strength of the mounting base's sidewall and enables physical isolation and independent stress bearing for different moving contact components.

[0027] In some embodiments, the mounting base includes a base body and a first mounting plate, the first mounting plate being 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 structurally reinforce the base body, making the base body less prone to deformation.

[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 components to operate synchronously under the drive of the electromagnetic system. The pushing mechanism includes two sets of pushing clips, which are arranged along the first direction and respectively connected to each of the moving contact components arranged along the first direction. Thus, the two sets of pushing clips can be used to push two sets of moving contact components. Furthermore, since the two sets of pushing clips are arranged along the first direction, it provides a basis for setting an independent chamber on the relay housing to improve the bending strength of the relay housing sidewall.

[0029] In some embodiments, the electromagnetic system includes a coil assembly and an armature assembly, the armature assembly being used to move based on the polarity change of the coil assembly and to drive each of the moving contact assemblies to move synchronously via each of the sets of push 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 connected to the first mounting plate. 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 forms a third mounting opening with a portion of the side wall of the base body. In the second direction, both the first and second mounting cavities 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. The coil assembly and the armature assembly can both be mounted from the third mounting opening into the third mounting cavity along the first direction. By providing the third mounting cavity, the electromagnetic system can obtain an independent stress-supported foundation. Since the opening direction of the third mounting opening is also along the first direction, the installation direction of the electromagnetic system is the same as the installation direction of one of the moving contact components, which simplifies the installation process and improves 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 portion of the bottom wall portion, the second mounting plate, and the side wall portion together enclose the third mounting cavity. Another portion of the side wall portion, the first mounting plate, and the second mounting plate enclose the first mounting cavity and the second mounting cavity. 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. This improves the installation stability of the coil assembly and the armature assembly.

[0032] In some embodiments, the mounting base has 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 a third direction, and both extend along the first direction to the 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 a third direction, and both extend along the first direction to the end of the mounting base where the second mounting opening is provided. The third direction is perpendicular to the first direction and the second direction. The first stationary lead-out piece, the second stationary lead-out piece, the third stationary lead-out piece, and the fourth stationary 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 accommodate the need for the corresponding stationary 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 groove depths of the first and second grooves communicating with the first mounting cavity are both less than or equal to 1 / 3 of the depth of the first mounting cavity, and the groove depths of the third and fourth grooves communicating with the second mounting cavity are both less than or equal to 1 / 3 of the depth of the second mounting cavity. This arrangement prevents the mounting base from being divided into at least two relatively independent parts along its three-dimensional sidewalls, thus maintaining good structural strength and preventing deformation. Furthermore, it avoids the relay housing sidewalls from losing connection with other parts due to the groove separation, and prevents the relay housing sidewalls from deforming due to the inability to withstand the contact pressure when the moving and stationary contacts 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 and third stationary lead-out members both extend through the sidewall of one side of the mounting base along the third direction and are connected to each other via the first external lead-out member. The second and fourth stationary lead-out members both extend through the sidewall of the other side of the mounting base along the third direction and are connected to each other via the second external lead-out member. Thus, the first and second moving contact components are connected in parallel.

[0035] In some embodiments, the first, second, third, and fourth stationary leads each have a bent portion, and a connecting terminal is led out along the second direction to the side of the outer wall of the mounting base via their respective bent portions. All the connecting terminals are arranged in the same plane parallel to both the first and third directions. This makes the arrangement of the stationary leads in the relay compact, reducing the size occupied by the relay along the third or first direction, which is beneficial for the miniaturization of the relay and makes it easier to adapt to limited installation spaces, such as the narrow battery compartment space in a car; in addition, it is also beneficial for supporting the compact side-by-side installation of multiple relays.

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

[0037] Since all the connection terminals are located on the outer side of the outer wall of the mounting base, which 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. This reduces the amount of conductive material consumed by each stationary lead-out piece to lead the connection terminal out of the mounting base, thereby reducing costs.

[0038] Since the mounting base is provided with shielding walls on the two side walls facing the third direction, each shielding wall covers the corresponding bend, thereby improving the overall appearance of the relay by shielding the corresponding bend.

[0039] In some embodiments, 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. When each moving contact unit is in the first switching state, it is electrically connected to an adjacent moving contact unit. This is such that in the two lead-out units corresponding to the two adjacent moving contact units, two static lead-out pieces of the first static lead-out component in one lead-out unit are connected in series with two static lead-out pieces of the second static lead-out component in the other lead-out unit. When each moving contact unit is in the second switching state, each lead-out unit... The components are disconnected from each other; all the connection terminals of the two lead-out units are located on the outer side of the outer wall of the mounting base closer to the contact system in the second direction; the connection terminals of the first and third stationary lead-out pieces of one lead-out unit are arranged along the first direction between the connection terminals of the first and third stationary lead-out pieces of the other lead-out unit, and the connection terminals of the second and fourth stationary lead-out pieces of one lead-out unit are arranged along the first direction between the connection terminals of the second and fourth stationary lead-out pieces of the other lead-out unit. In this embodiment, the contact system can switch between series and parallel connections to adapt to certain special application scenarios, such as in automotive battery management systems to optimize the charging and discharging functions of the battery pack. This structure allows two connection terminals for at least one set of circuit connections at the same end to be arranged adjacently and close together, thereby facilitating subsequent circuit connections and insulation design between connection terminals connecting different load terminals.

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

[0041] In some embodiments, the connection terminals of the first and third stationary leads located in the middle along the first direction are used to form a series connection with the connection terminals of the second and fourth stationary leads located in the middle along the first direction during the first switching state. By arranging the connection terminals for series connection adjacent to each other, the wire length between the two series-connected circuit units can be shortened in applications, reducing line resistance and energy loss, especially in high-current scenarios. In addition, it can also avoid current offset caused by uneven line impedance on both sides, improving the balance of the two circuit units. The middle connection terminal is used to realize the series function, and the connection terminals on both sides are used for parallel connection, which helps to flexibly adapt to possible future expansion needs, such as the expansion needs of battery modules.

[0042] In some embodiments, the relay includes a first isolator, a second isolator, a third isolator, and a fourth isolator; wherein the first isolator is connected to one of the two first stationary leads and electrically isolates the two first stationary leads; the second isolator is connected to one of the two second stationary leads and electrically isolates the two second stationary leads; the third isolator is connected to one of the two third stationary leads and electrically isolates the two third stationary leads; and the fourth isolator is connected to one of the two fourth stationary leads and electrically isolates the two fourth stationary leads. In this embodiment, the first, second, third, and fourth isolators increase the creepage distance between the connection terminals of the two terminals used for external connection circuits at corresponding positions, thereby improving the reliability of the relay performance.

[0043] In some embodiments, the first isolation member includes a first baffle and a second baffle. The first baffle is located between the outer wall of the mounting base and the connection terminal of one of the first stationary leads. The second baffle is connected to the first baffle and is located between the connection terminals of the two first stationary leads along the first direction. In this embodiment, the creepage distance between the connection terminals of the two first stationary leads is increased by the shielding provided by the first and second baffles.

[0044] In some embodiments, the first isolation member further includes a third baffle wall, which is connected to the first baffle wall and the second baffle wall on the inner side in the third direction. The first baffle wall, the second baffle wall, and the third baffle wall are connected and together enclose a first receiving groove with a first opening. A connection terminal of one of the first stationary leads is received in the first receiving groove and exposed through the first opening to the first isolation member. In this embodiment, the presence of the third baffle wall increases the creepage distance of the connection terminals of the two first stationary leads on their inner sides in the first direction, preventing current breakdown at the corners of the two connection terminals. The first opening ensures reliable external connection of the connection terminals at the first receiving groove.

[0045] In some embodiments, the second isolator includes a fourth barrier and a fifth barrier. The fourth barrier is located between the outer wall of the mounting base and the connection terminal of one of the second stationary leads. The fifth barrier is connected to the fourth barrier and is located between the connection terminals of the two second stationary leads along the first direction. This increases the creepage distance between the connection terminals of the two second stationary leads in the first direction.

[0046] In some embodiments, the second isolator further includes a sixth baffle wall connected to the fourth and fifth baffle walls on the inner side in the third direction. The fourth, fifth, and sixth baffle walls are connected to each other and together form a second receiving groove with a second opening. One of the connection terminals of the second stationary lead-out pieces is received in the second receiving groove and exposed from the second isolator through the second opening. In this embodiment, the presence of the sixth baffle wall increases the creepage distance of the connection terminals of the two second stationary lead-out pieces on their inner sides in the first direction, preventing current breakdown at the corners of the two connection terminals. The second opening allows the connection terminals at the second receiving groove to reliably connect to the outside.

[0047] In some embodiments, at least one of the following technical solutions is further included: the first isolation member and the third isolation member are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry; or, the second isolation member and the fourth isolation member are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry; or, the first static lead-out piece and the third static lead-out piece located in the same lead-out unit are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry; or, the second static lead-out piece and the fourth static lead-out piece located in the same lead-out unit are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry. The above design simplifies the structure, allowing at least some static lead-out pieces to be shared, thus saving production costs. Furthermore, it ensures that each static lead-out piece has a balanced current-carrying capacity.

[0048] In some embodiments, the relay further includes two mounting covers; the two mounting covers are respectively fixed to both 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 clamping portions. The clamping portions are used to engage with the corresponding bent portions, and the clamping portions are limited and cooperated with the relay housing and / or the corresponding lead-out unit along the first direction, the second direction, and the third direction, thereby improving the installation stability of the corresponding isolating members. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the internal structure of a relay according to one embodiment of this application.

[0050] Figure 2 for Figure 1 The diagram shows an exploded view of part of the relay structure.

[0051] Figure 3 for Figure 2A bottom view showing a partial structure of the relay's contact system.

[0052] Figure 4 This is a schematic diagram of the structure of the moving contact in the contact system of a relay according to an embodiment of this application.

[0053] Figure 5 This is a schematic diagram of the structure of the relay in one embodiment of this application, in which the electromagnetic system and the contact system are assembled into the mounting base.

[0054] Figure 6 for Figure 5 The diagram shown is a top view of the relay.

[0055] Figure 7 For a relay edge in one embodiment of this application Figure 6 Schematic diagram of the cross-sectional structure of the middle II line.

[0056] Figure 8 This is a schematic diagram of the mounting base of the relay in one embodiment of this application.

[0057] Figure 9 for Figure 8 A schematic diagram of the relay mounting bracket from another perspective is shown.

[0058] Figure 10 This is a schematic diagram of the structure of a relay according to another embodiment of this application, in which the electromagnetic system and the contact system are assembled to the mounting base.

[0059] Figure 11 for Figure 10 The diagram shows the structure of the relay contact system.

[0060] Figure 12 for Figure 11 The diagram shown is a top view of part of the relay structure.

[0061] Figure 13 for Figure 10 The schematic diagram shown is of the structure of the relay mounting base.

[0062] Figure 14 This is a schematic diagram of the structure of a relay contact system according to one embodiment of the present application, in which a first isolator is provided between two first stationary leads.

[0063] Figure 15 for Figure 14 The diagram shows an exploded view of the first stationary lead and the first isolator in the relay contact system.

[0064] Figure 16 This is a schematic diagram of the structure of a relay contact system according to an embodiment of the present application, in which a first isolator is provided between two second stationary leads.

[0065] Figure 17 for Figure 16 The diagram shows an exploded view of the second stationary lead and the second isolator in the relay contact system.

[0066] Figure 18 This is a three-dimensional structural diagram of a relay according to another embodiment of this application.

[0067] Figure 19 This is a top view of the internal structure of a relay according to another embodiment of this application.

[0068] Figure 20 This is a three-dimensional structural diagram of the internal structure of a relay according to another embodiment of this application.

[0069] Figure 21 This is a schematic diagram of the mounting base for a relay according to one embodiment of this application.

[0070] Figure label:

[0071] 10. Contact system; 10a. Lead-out unit; 11. First stationary lead-out assembly; 12. Second stationary lead-out assembly; 111. First stationary lead-out piece; 111a. First bend; 111b. First connecting terminal; 112. Second stationary lead-out piece; 112a. Second bend; 112b. Second connecting terminal; 113. Third stationary lead-out piece; 113a. Third bend; 113b. Third connecting terminal; 114. Fourth stationary lead-out piece; 114a. Fourth bend; 114b. Fourth connecting terminal; 10a1. First external lead-out piece; 10a2. Second external lead-out piece; 10a3. Third external lead-out piece; 10a4. Fourth external lead-out piece; P1. Stationary lead-out piece one; P2. Stationary lead-out piece two; P3. Stationary lead-out piece two; Lead-out piece 3; P4, stationary lead-out piece 4; P5, stationary lead-out piece 5; P6, stationary lead-out piece 6; P7, stationary lead-out piece 7; P8, stationary lead-out piece 8; D1, terminal 1; D2, terminal 2; D3, terminal 3; D4, terminal 4; D5, terminal 5; D6, terminal 6; D7, terminal 7; D8, terminal 8; 10b, moving contact unit; 13, moving contact assembly; 13a, moving contact; A, first contact; B, second contact; 13a1, fixed end; 13a2, swing end; 13a3, flow guide branch; 13a4, gap; 13b, stationary contact; 13c, moving contact; 131, first moving contact assembly; 1311, first moving contact; 132, second moving contact assembly; 1321, second moving contact; 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 base; 30a, First end face; 30b, Second end face; 30c, Inner wall surface; 30d, Outer wall surface; 30e, Baffle; 301, First mounting cavity; 3011, Second positioning buckle; 302, Second mounting cavity; 3021, Third positioning buckle; 303, Third mounting cavity; 31, Base body; 311, Side wall portion; 311a, First side wall; 311b, Second side wall; 311c, Third side wall; 311d, Fourth side wall 312. Bottom wall; 32. First mounting plate; 33. Second mounting plate; 331. First positioning buckle; C1. First groove; C11. Inner groove opening of the first groove; C12. Outer groove opening of the first groove; C2. Second groove; C21. Inner groove opening of the second groove; C22. Outer groove opening of the second groove; C3. Third groove; C31. Inner groove opening of the third groove; C32. Outer groove opening of the third groove; C4. Fourth groove; C41. Inner groove opening of the fourth groove; C42. Outer groove opening of the fourth groove; ST. Limiting mating part; 40. Pushing mechanism; 41. First set of push clips; 411. First push clip; 42. Second set of push clips; 421. Second push clip; 50. First isolation member; 50a. First receiving groove;51. First baffle; 52. Second baffle; 53. Third baffle; 60. Second spacer; 60a. Second receiving groove; 61. Fourth baffle; 62. Fifth baffle; 63. Sixth baffle; 70. Third spacer; 80. Fourth spacer; S. Clamping part; SC. Clamping groove. Detailed Implementation

[0072] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0073] In the description of this application, it should be understood that if terms such as "top", "bottom", "inner", "outer", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0074] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] It should be noted that if a component is described as "fixed to" or "attached to" another component, it can be directly on the other component or there may be an intervening component. If a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0076] Combination Figure 1 and Figure 2 As shown, this application provides a relay, including an electromagnetic system 20 and a contact system 10. The electromagnetic system 20 generates electromagnetic force when current is applied to drive the contact system 10 to switch between on and off states, thereby connecting or disconnecting 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 movable based on changes in the polarity of the coil assembly 21. It should be noted that the armature assembly 22 can be a direct-drive armature assembly 22 or a rotary armature assembly 22. Specifically, the direct-drive armature assembly 22 drives the contact system 10 to switch states through linear motion, while the rotary armature assembly 22 drives the contact system 10 to switch states through rotation or oscillation. In this application, the type of armature assembly 22 is not limited.

[0078] Combination 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 stationary lead-out component 11 and a second stationary lead-out component 12. The first stationary lead-out component 11 and the second stationary lead-out component 12 can be understood as a current input terminal group and a current output terminal group, respectively, to meet the needs of the current input and output moving contact unit 10b. It should be noted that one moving contact unit 10b corresponds to one lead-out unit 10a; that is, the lead-out unit 10a and the moving contact unit 10b are matched together, so that the first stationary lead-out component 11 and the second stationary lead-out component 12 serve as the current input terminal and the current output terminal, respectively.

[0079] The movable touch unit 10b includes a plurality of movable touch components 13. The plurality of movable touch components 13 are arranged along a first direction (e.g., Figure 2 Arranged in the X direction.

[0080] For ease of understanding, Figure 2 The contact system 10 shown is an example. Figure 2 In the contact system 10 shown, the movable contact unit 10b includes two movable contact components 13 arranged along a first direction.

[0081] For ease of description, the two moving contact components 13 will be referred to as "first moving contact component 131" and "second moving contact component 132" in some places below. Understandably, the number of moving contact components 13 in the moving contact unit 10b is not limited to two. In some embodiments, there may be three or more moving contact components 13 in the moving contact unit 10b. The number of moving contact components 13 in the moving contact unit 10b is not limited here.

[0082] The moving contact unit 10b is configured to switch between a first switching state and a second switching state. In the first switching state, all moving contact components 13 disconnect the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12; in the second switching state, the multiple moving contact components 13 are connected in parallel and all connect the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12.

[0083] For the contact system 10, the contact and disconnection actions of the moving contact component 13 are the basis for the switch control of the contact system 10. 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 components 13 jointly disconnecting or jointly connecting the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12.

[0084] It should be noted that the terms "common conduction" and "common disconnection" indicate the consistency of the switching actions of each moving contact component 13 in achieving the circuit's conduction or disconnection. That is, when the moving contact unit 10b switches from the first switching state to the second switching state, all moving contact components 13 switch the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12 from disconnected to conducted. Correspondingly, when the moving contact unit 10b switches from the second switching state to the first switching state, all moving contact components 13 switch the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12 from conducted to disconnected.

[0085] Since in the second switching state, multiple moving contact components 13 all conduct the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12, and the multiple moving contact components 13 are connected in parallel with each other, this helps to reduce contact resistance.

[0086] Since multiple moving contact components 13 are arranged along the first direction, they are configured in parallel along the first direction. In some embodiments, at least one moving contact component 13 has at least two parallel branches arranged in a plane intersecting the first direction, thereby expanding the parallel structure using the plane intersecting the first direction. Thus, the relay of this application implements a parallel structure in two spatial dimensions, which can increase the number of parallel paths while avoiding excessive volume occupied by the parallel structure in one direction, thus preventing the relay from becoming too large. Therefore, the relay of this application achieves miniaturization while reducing contact resistance, which is beneficial for meeting usage requirements.

[0087] It should be noted that, in combination Figure 2 and Figure 3As shown, the first moving contact assembly 131 and the second moving contact assembly 132 are arranged with moving contacts 13b and stationary contacts 13c opposite each other in a second direction. In the second switching state, the moving contact 13b makes electrical contact with the corresponding moving contact 13c, thereby conducting the electrical path between the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12. Because the embodiment of this application increases the number of moving contact assemblies 13, the contact system in the relay is less likely to be completely disconnected due to vibration. That is, the probability of all moving contacts 13b and stationary contacts 13c being disconnected is greatly reduced, which helps to ensure the working stability of the relay, giving the relay good shock resistance and meeting the requirements for mechanical shock resistance. For some applications where there is bumpy operation (such as in automobiles), this relay has significant advantages. Furthermore, with this structural design, if some parallel branches of the relay freeze and disconnect due to low temperature while operating in a low-temperature environment, the current flowing through the undisconnected parallel branches increases and generates heat, allowing the frozen parallel branches to thaw and regain conductivity. This makes the relay more resistant to low-temperature non-conductivity and more adaptable to different environments.

[0088] It should be noted that in the embodiment where the moving contact unit 10b includes multiple moving contact components 13, the electromagnetic system 20 is used to drive the multiple moving contact components 13 to operate synchronously, that is, to simultaneously connect or disconnect the electrical path between the first static lead-out component 11 and the second static lead-out component 12, so that the moving contact unit 10b switches between the first switch state and the second switch state.

[0089] In an embodiment of the electromagnetic system 20 including a coil assembly 21 and an armature assembly 22, multiple moving contact assemblies 13 can operate synchronously under the drive of the armature assembly 22, and cause the moving contact unit 10b to switch between a first switching state and a second switching state.

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

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

[0092] Since at least one parallel branch is arranged along the second direction with another parallel branch, the moving contact unit 10b simultaneously extends the parallel structure in both the first and second directions. This helps to reduce contact resistance and avoids the parallel structure occupying too much volume in one direction, which would result in an excessively large relay size. Therefore, the relay of this application achieves miniaturization while reducing contact resistance, thus meeting usage requirements.

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

[0094] In this application embodiment, the number of parallel branches is not limited. The number of parallel branches in the first direction and the second direction can be set as needed to ensure that the total contact resistance of the contact system meets the requirements, thereby reducing heat generation and lowering the temperature rise.

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

[0096] In some implementations, the second direction is perpendicular to the first direction, so that the parallel branches can be arranged in two mutually perpendicular dimensions. This structure helps the moving contact component 13 to improve the utilization of the assembly space in the relay, so that the overall shape of the relay can be made more square (for example, the overall appearance of the relay can be cubic except for the necessary lead-out structure), thus achieving miniaturization.

[0097] Combination Figure 3 As shown, the movable contact assembly 13 (e.g., the second movable contact assembly 132) includes two movable contacts 13a, which are arranged along a second direction perpendicular to the first direction.

[0098] In some embodiments, the length direction of the movable contact 13a is parallel to a third direction (e.g., Figure 2 The first direction (Z-direction) is parallel to the second direction. Assuming the second and third directions are both perpendicular to the first direction, the two moving contacts 13a of the moving contact assembly 13 are arranged in the same plane parallel to both the second and third directions. Thus, when the two moving contacts 13a contact each other to form a parallel structure, each moving contact 13a can constitute a parallel branch. Therefore, arranging the two moving contacts 13a in a plane intersecting the first direction means that at least two parallel branches can be formed in that plane.

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

[0100] When the two swing ends 13a2 of the same moving contact component 13 are electrically in contact with the fixed end 13a1 of the other moving contact component 13a in the second direction, the two moving contacts 13a form parallel branches to conduct the electrical path between the first static lead-out component 11 and the second static lead-out component 12, thereby causing the moving contact unit 10b to switch to the second switch state.

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

[0102] In this embodiment, on the one hand, the two moving contacts 13a are arranged along a second direction perpendicular to the first direction; on the other hand, the two moving contacts 13a are used to form a parallel branch by contacting each other to conduct the electrical path between the first static lead-out component 11 and the second static lead-out component 12. This reduces the contact resistance and realizes the parallel structure extended in both the first and second spatial dimensions, which is beneficial for miniaturization. Both moving contacts 13a adopt a swing-type moving spring with a fixed end 13a1 and a swing end 13a2. This not only realizes the construction of a parallel structure with a simple structure, but also utilizes the electromagnetic force generated between them when current flows through them to increase their contact pressure and improve their ability to withstand large fault currents.

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

[0104] For example, combining Figure 3 As shown, in some embodiments, the moving contact component 13 is configured such that when switching between a first switch state and a second switch state, the two moving contacts 13a of the moving contact component 13 move in opposite directions. The "movement in opposite directions" and the "movement in the same direction" mentioned below refer to the direction of movement relative to the corresponding stationary contact 13b (described in detail below). In this embodiment, it can be regarded as the movement direction in the second direction being opposite or the same.

[0105] For ease of description, the following will be based on Figure 3 The switching action of the moving contact assembly 13 is explained using two moving contacts 13a (hereinafter referred to as "first contact A" and "second contact B") located in the second moving contact assembly 132 as examples, but this does not mean that the switching action of the moving contact assembly 13 is limited to this.

[0106] Combination Figure 3 As shown, Figure 3The diagram shows the state in which the first contact A and the second contact B are separated from each other. At this time, because the first contact A and the second contact B are separated from each other, the first static lead-out assembly 11 and the second static lead-out assembly 12 are electrically disconnected (i.e., no current flows), and then the circuit is in the first switching state.

[0107] The swing end 13a2 of the first contact A can come into contact with or separate from the fixed end 13a1 of the second contact B by swinging. Correspondingly, the swing end 13a2 of the second contact B can come into contact with or separate from the fixed end 13a1 of the first contact A by swinging.

[0108] by Figure 3 From the perspective of the first switch state to the second switch state, during the process of switching from the first switch state, the swing end 13a2 of the first contact A swings clockwise relative to the fixed end 13a1 of the first contact A, eventually causing the moving contact 13c on the swing end 13a2 of the first contact A to contact the stationary contact 13b on the fixed end 13a1 of the second contact B; correspondingly, the swing end 13a2 of the second contact B also swings clockwise relative to the fixed end 13a1 of the second contact A, eventually causing the moving contact 13c on the swing end 13a2 of the second contact B to contact the stationary contact 13b on the fixed end 13a1 of the first contact A, thereby opening the electrical path between the first stationary lead-out component 11 and the second stationary lead-out component 12, so that the moving contact component 13 is in the second switch state.

[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 position or structure of the first contact A and the second contact B, the two movable contacts 13a can move in the same direction to achieve switching between the first switch state and the second switch state. That is, the movable contact assembly 13 is configured such that when switching from the first switch state to the second switch state, the swing ends 13a2 of the two movable contacts 13a of the movable contact assembly 13 move in the same direction; and when switching from the second switch state to the first switch state, the swing ends 13a2 of the two movable contacts 13a of the movable contact assembly 13 also move in the same direction. The structural arrangement between the two movable contacts 13a of the movable contact assembly 13 is not limited here.

[0110] In some embodiments, the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 are respectively arranged on both sides of the moving contact unit 10b along a third direction. The moving contact assembly 13 has an operating direction, which can be understood as a direction parallel to the tangent direction corresponding to the swing end 13a2 of the moving contact 13a in its natural state of no deformation or slight deformation, or it can be understood as the direction of the normal at the contact position of the stationary contact 13b corresponding to the swing end 13a2. In this embodiment, the operating direction of the moving contact assembly 13 is parallel to the second direction, that is, when the moving contact assembly 13 switches from the first switch state to the second switch state, at the instant when the moving contact 13a in its natural state deforms, the moving direction of the swing end 13a2 is parallel to the second direction.

[0111] The first direction, the second direction, and the third direction are all perpendicular to each other. In this structural arrangement, the moving contacts 13a in the moving contact unit 10b are arranged compactly to reduce space waste, thereby facilitating miniaturization. Since the operating direction of the moving contact assembly 13 is parallel to the second direction, the two parallel branches in the same moving contact assembly 13 can be connected in parallel by contacting each other, thereby avoiding the need for each parallel branch to contact or disconnect from the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 respectively, reducing the area and material consumption of the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12, and further contributing to the miniaturization of the relay.

[0112] Continue to combine Figure 3 As shown, the fixed end 13a1 of the moving contact 13a has a stationary contact 13b, and the swing end 13a2 of the moving contact 13a has a moving contact 13c. The stationary contact 13b and the moving contact 13c of one moving contact 13a correspond to the moving contact 13c and the stationary contact 13b of the other moving contact 13a, respectively. In the two moving contacts 13a of the same moving contact assembly 13, the two moving contacts 13c can come into contact with or separate from the corresponding stationary contact 13b under the action of the corresponding swing end 13a2. In this way, the reliability of the contact between the two moving contacts 13a can be improved by using the moving contact 13c and the stationary contact 13b.

[0113] It should be noted that the stationary contact 13b and the moving contact 13c can be directly disposed on the moving contact 13a, or they can be indirectly connected to the moving contact 13a. Taking the stationary contact 13b as an example, regardless of whether the stationary contact 13b is directly disposed on the fixed end 13a1 of the moving contact 13a, or indirectly connected to the fixed end 13a1 of the moving contact 13a, it can be understood that the fixed end 13a1 of the moving contact 13a has a stationary contact 13b. For example, in some embodiments, the fixed end 13a1 of the moving contact 13a is connected to the first stationary lead-out assembly 11, and the first stationary lead-out assembly 11 is connected to the stationary contact 13b, which can be understood as the fixed end 13a1 of the moving contact 13a having a stationary contact 13b.

[0114] Combination Figure 2 and Figure 4 As shown, in some embodiments, in at least one moving contact assembly 13, both moving contacts 13a include multiple current-guiding branches 13a3, and the current-guiding branches 13a3 on the two moving contacts 13a correspond one-to-one. The multiple current-guiding branches 13a3 of the moving contact 13a are arranged along a first direction and are configured to be connected in parallel when the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 are electrically connected, and to be connected in parallel with each current-guiding branch 13a3 on the other moving contact 13a respectively. That is, since the arrangement direction of the multiple current-guiding branches 13a3 and the arrangement direction of the multiple moving contact assemblies 13 are both the first direction, with this configuration, the moving contact unit 10b can not only use the multiple moving contact assemblies 13 to expand parallel branches in the first direction, but also use the multiple current-guiding branches 13a3 to expand parallel branches inside the moving contact assembly 13 in the first direction, thereby helping to reduce contact resistance.

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

[0116] Continue to combine Figure 4 As shown, the movable contact 13a is an integral structural component, and the movable contact 13a has a slit 13a4, which divides the movable contact 13a into multiple flow-guiding branches 13a3. This structure, which divides the movable contact 13a into multiple flow-guiding branches 13a3 through the slit 13a4, is simple and easy to implement.

[0117] The number of flow guide branches 13a3 can be two or more. There is no limit to the number of flow guide branches 13a3 here.

[0118] It should be noted that the slit 13a4 can extend from the fixed end 13a1 to the swing end 13a2, that is, the slit 13a4 divides the swing end 13a2 of the moving contact 13a into multiple sub-sections, each sub-section being equivalent to a flow guide branch 13a3. In this case, the flow guide branch 13a3 extends from the fixed end 13a1 of the moving contact 13a to the swing end 13a2, and each of the multiple flow guide branches 13a3 divided by the slit 13a4 has a corresponding swing end 13a2. Therefore, the swing ends 13a2 of each flow guide branch 13a3 are separated from each other. Compared to the moving contact 13a's swing ends 13a2 being integrated, this separation of the swing ends 13a2 of each flow guide branch 13a3 helps reduce the driving force required to swing the swing end 13a2, making the switching action of the moving contact assembly 13 between the first and second switching states more flexible and reliable.

[0119] Furthermore, each flow-guiding branch 13a3 possesses a degree of independence, resulting in minimal restraining force between them when they oscillate. This prevents them from simultaneously separating from their corresponding stationary contacts 13c due to vibration. Consequently, this type of moving contact 13a further reduces the probability of all moving contacts 13b disconnecting from their corresponding stationary contacts 13c due to vibration, thus improving the relay's shock resistance.

[0120] The slit 13a4 can also be a segmentation of a portion of the structure of the moving contact 13a located between the fixed end 13a1 and the swing end 13a2, meaning that the slit 13a4 does not extend to the swing end 13a2. Thus, each current-guiding branch 13a3 in the moving contact 13a is equivalent to forming multiple parallel branches arranged along the first direction between the fixed end 13a1 and the swing end 13a2, thereby electrically connecting the swing end 13a2 and the fixed end 13a1 of the moving contact 13a through the multiple parallel current-guiding branches 13a3. In this way, when the moving contact assembly 13 is in the second switching state, the two moving contact assemblies 13 are connected in parallel, the two moving contacts 13a in the moving contact assembly 13 are connected in parallel, and the multiple current-guiding branches 13a3 in the moving contact 13a are connected in parallel. These parallel current-guiding branches 13a3 further extend the parallel structure in the moving contact unit 10b, which helps to reduce contact resistance.

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

[0122] For the moving contact assembly 13, if each of the two moving contacts 13a of the moving contact assembly 13 is provided with three current-conducting branches 13a3, then when the moving contact assembly 13 is in the second switching state, six parallel branches will be formed in the moving contact assembly 13. Correspondingly, if the moving contact unit 10b includes two moving contact assemblies 13, then the moving contact unit 10b includes twelve parallel branches, which helps to reduce the total contact resistance in order to meet the ultra-low contact resistance requirement. For example, in some embodiments, when the moving contact unit 10b is in the second switching state, the total contact resistance is less than 0.05mΩ.

[0123] Continue to combine Figure 4 As shown, a stationary contact 13b is provided at the fixed end 13a1 of the moving contact 13a corresponding to each flow guide branch 13a3, and a moving contact 13c is provided at the swing end 13a2 of each flow guide branch 13a3.

[0124] To further illustrate the structure of the contact system 10, the following description uses the moving contact unit 10b, which includes two moving contact components 13, as an example to illustrate the structure of the relay. However, this does not mean that the number and arrangement of the moving contact components 13 in the relay are limited to this.

[0125] See again Figure 2 As shown, the movable contact unit 10b includes two movable contact components 13, namely a first movable contact component 131 and a second movable contact component 132. The number of movable contacts 13a and the number of flow guiding branches 13a3 in each movable contact component 13 can be equal or unequal, and the specific shape or size of each movable contact 13a can also be different. No specific limitation is made here, as long as the first movable contact component 131 and the second movable contact component 132 as a whole conform to the aforementioned description of the movable contact component 13.

[0126] Combination Figure 2 and Figure 3 As shown, for ease of description, the movable contact 13a in the first movable contact assembly 131 is named "first movable contact 1311", and the movable contact 13a in the second movable contact assembly 132 is named "second movable contact 1321".

[0127] One of the first moving contacts 1311 and one of the second moving contacts 1321 are arranged along a first direction, and another first moving contact 1311 and another second moving contact 1321 are also arranged along the first direction. With this structural arrangement, the first moving contacts 1311 and the second moving contacts 1321 are neatly arranged in both the first and second directions, which helps to improve the compactness of the arrangement between the structural components, reduce wasted space, and thus reduce the space occupied by the moving contact unit 10b in the relay, thereby facilitating the miniaturization of the relay.

[0128] The structure of the first movable contact 1311 can be the same as or different from that of the second movable contact 1321. The structures of the first movable contact 1311 and the second movable contact 1321 can be referred to the above description of the movable contact 13a, and will not be repeated here. For example, in an embodiment where the movable contact 13a includes multiple flow guide branches 13a3, the corresponding first movable contact 1311 and second movable contact 1321 can also adopt this structure including multiple flow guide branches 13a3.

[0129] In some embodiments, both the first movable contact 1311 and the second movable contact 1321 include a plurality of flow guiding branches 13a3, and the number of flow guiding branches 13a3 on the first movable contact 1311 and the second movable contact 1321 is equal and they are arranged in a one-to-one correspondence.

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

[0131] The number of first guide branches can be two or more, and the number of second guide branches can be two or more. The number of first guide branches and second guide branches is not limited here.

[0132] For ease of understanding, the following will use... Figure 1 and Figure 2 The relay contact system 10 shown is an example. Figure 2 In the contact system 10 shown, each of the two first moving contacts 1311 of the first moving contact assembly 131 includes three first flow branches. When the two first moving contacts 1311 of the first moving contact assembly 131 are in contact with each other, the first moving contact assembly 131 includes six first flow branches. Thus, when the first moving contact assembly 131 is in the second switching state, the first moving contact assembly 131 has six branches connected in parallel with each other.

[0133] Correspondingly, each of the two second moving contacts 1321 of the second moving contact assembly 132 includes three second flow branches. When the two second moving contacts 1321 of the second moving contact assembly 132 are in contact with each other, the second moving contact assembly 132 includes six second flow branches. Thus, when the second moving contact assembly 132 is in the second switching state, the second moving contact assembly 132 has six branches connected in parallel with each other.

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

[0135] Combination Figures 5 to 7 As shown, the relay also includes a mounting base 30, and the moving contact assembly 13 (such as the first moving contact assembly 131 and the second moving contact assembly 132) and the electromagnetic system 20 are all mounted in the mounting base 30.

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

[0137] With this structural configuration, since the first mounting port and the second mounting port are located at both ends of the mounting base 30 in the first direction, and the first moving contact component 131 and the second moving contact component 132 are respectively installed into the mounting base 30 from the first mounting port and the second mounting port, the ease of installation is improved.

[0138] In this embodiment, the first moving contact component 131 and the second moving contact component 132 are installed into the mounting base 30 from the first mounting port and the second mounting port, respectively. Therefore, the advantage of setting the moving contact unit 10b to arrange the first moving contact component 131 and the second moving contact component 132 along the first direction is that the first moving contact component 131 and the second moving contact component 132 are arranged in layers in the mounting base 30. In this way, the side wall of the mounting base 30 only needs to open independent grooves for the positions of the first moving contact component 131 and the second moving contact component 132 to meet the needs of the corresponding static lead-out piece being led out from the mounting base 30. This method of independently slotting the moving contact components helps reduce the slot depth on the sidewall of the mounting base 30, thereby maintaining the structural strength of the sidewall of the mounting base 30. Specifically, since the two sets of moving contact components 13 are arranged in layers, the stationary lead-out components are also arranged in two layers in the first direction. Therefore, the two parts of the mounting base 30 corresponding to the stationary lead-out components can be independently slotted, thus avoiding excessively deep slots that would cause at least one side of the sidewall of the mounting base 30 to become an isolated and unsupported structure, thereby avoiding affecting the overall structural strength of the mounting base 30 and improving the reliability of the relay. Therefore, adopting the solution of this embodiment can improve the structural strength of the sidewall of the mounting base 30 and achieve physical isolation and independent stress bearing for different moving contact components 13.

[0139] In conventional technology, the moving contact unit and the lead-out unit are usually installed inside the relay housing. The relay housing has an opening, and the first and second stationary lead-out components of the lead-out unit are usually inserted into the relay housing through the opening and pass through the side wall of the relay housing. If all the moving contact components and lead-out units are inserted into the relay housing through the same opening, then a groove with a relatively large depth needs to be made on the relay housing to allow all the first and second stationary lead-out components to pass through. This significantly weakens the strength of the side wall of the relay housing, making the side wall of the relay housing prone to bending, and may affect the contact assembly accuracy as well as the overall structural strength and stability of the relay.

[0140] The first stationary lead assembly 11 and the second stationary lead assembly 12 each include a plurality of stationary lead pieces arranged along a first direction. Each stationary lead piece in the first stationary lead assembly 11 and each stationary lead piece in the second stationary lead assembly 12 corresponds one-to-one with each moving contact assembly 13. Each moving contact assembly 13 can conduct or disconnect the electrical path between the corresponding two stationary lead pieces. In this embodiment, by configuring the first stationary lead assembly 11 and the second stationary lead assembly 12 to include a plurality of stationary lead pieces arranged along the first direction, the current input or current output needs of the corresponding moving contact assembly 13 are accommodated. Moreover, the plurality of stationary lead pieces in the same stationary lead assembly are arranged along the first direction, thereby maintaining consistency with the arrangement direction of the plurality of moving contact assemblies 13, which helps to improve the space utilization of the relay structure and reduce its size.

[0141] In some embodiments proposed in this application, since there are two moving contact components 13, two independent chambers (e.g., the first mounting chamber 301 and the second mounting chamber 302) are provided for the relay housing to accommodate the two sets of moving contact components (e.g., the first moving contact component 131 and the second moving contact component 132) respectively, and the lead-out unit 10a is set as two sets to provide a foundation. Each chamber can be provided with a groove for the lead-out unit to pass through, so that the groove depth on the side wall of the relay housing is reduced to half or even more than the original, thereby effectively improving the bending strength of the side wall of the relay housing. In addition, it is also beneficial to fix and support the two sets of moving contact components respectively by configuring more sufficient mounting structures in the independent chambers, thereby improving the stability of the moving contact components and realizing physical isolation and independent stress bearing.

[0142] The following is combined with Figure 2 The structure of the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 in the relay shown will be described. (In conjunction with...) Figure 2 As shown, the first static lead-out assembly 11 includes two static lead-out pieces arranged along the first direction, namely the first static lead-out piece 111 and the third static lead-out piece 113. The second static lead-out assembly 12 includes two static lead-out pieces arranged along the first direction, namely the second static lead-out piece 112 and the fourth static lead-out piece 114.

[0143] In the first switching state, the first moving contact assembly 131 disconnects the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the second moving contact assembly 132 disconnects the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114; in the second switching state, the first moving contact assembly 131 connects the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the second moving contact assembly 132 connects the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114.

[0144] It should be noted that the first stationary lead-out piece 111, the third stationary lead-out piece 113, the second stationary lead-out piece 112, and the fourth stationary lead-out piece 114 can electrically connect the corresponding moving contact assembly 13 to the circuit outside the relay. Since the first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 are both divided into two groups, this further provides a basis for setting independent chambers on the relay housing to improve the bending strength of the relay housing sidewalls.

[0145] Furthermore, the fixed ends 13a1 of the two moving contacts 13a of the first moving contact assembly 131 are respectively fixed to the first stationary lead-out piece 111 and the second stationary lead-out piece 112. The fixed ends 13a1 of the two moving contacts 13a of the second moving contact assembly 132 are respectively fixed to the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114. All the swing ends 13a2 can be driven by the electromagnetic system 20 to contact or separate from the fixed end 13a1 of the other moving contact 13a located in the same moving contact assembly 13. Thus, in the first switching state, the two moving contacts 13a of the first moving contact assembly 131 separate from each other, thereby breaking the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the two moving contacts 13a of the second moving contact assembly 132 separate from each other, thereby breaking the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114. Accordingly, in the second switching state, the two moving contacts 13a of the first moving contact assembly 131 are in contact with each other, thereby opening the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112. Similarly, the two moving contacts 13a of the second moving contact assembly 132 are in contact with each other, thereby opening the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114. Thus, switching between the first and second switching states can be achieved by using the first moving contact assembly 131 and the second moving contact assembly 132 to either open or close the electrical path between the first stationary lead-out piece 11 and the second stationary lead-out piece 12.

[0146] It should be noted that each movable contact assembly 13 is not limited to including two movable contacts 13a. In some embodiments, the movable contact assembly 13 may also have only one movable contact 13a. Taking the first movable contact assembly 131 as an example, the first movable contact assembly 131 includes one movable contact 13a, one end of which is fixed to one of the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the other end is movable to contact or separate from the other of the first stationary lead-out piece 111 and the second stationary lead-out piece 112, thereby enabling the first movable contact assembly 131 to disconnect or connect the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112. Correspondingly, the second movable contact assembly 132 may also adopt a similar arrangement to the first movable contact assembly 131 to disconnect or connect the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114, which will not be discussed here.

[0147] Understandably, when the movable contact unit 10b includes multiple sets of movable contact components 13, for example, when the number of movable contact components 13 is two or more, regardless of whether the number of movable contacts 13a in the movable contact components 13 is one or two, the movable contact unit 10b can be configured to switch between a first switch state and a second switch state. Taking the first movable contact component 131 and the second movable contact component 132 as examples, in the first switch state, the first movable contact component 131 disconnects the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the second movable contact component 132 disconnects the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114; in the second switch state, the first movable contact component 131 connects the electrical path between the first stationary lead-out piece 111 and the second stationary lead-out piece 112, and the second movable contact component 132 connects the electrical path between the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114.

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

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

[0150] The first direction, the second direction, and the third direction intersect each other. In some implementations, the first direction, the second direction, and the third direction are perpendicular to each other. In this case, the coordinate system XYZ established based on these three directions is a rectangular coordinate system.

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

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

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

[0154] It should be noted that in embodiments where each moving contact assembly 13 includes two moving contacts 13a, taking the first moving contact assembly 131 including two first moving contacts 1311 and the second moving contact assembly 132 including two second moving contacts 1321 as an example, the first stationary lead-out piece 111 is connected to one of the first moving contacts 1311, and the second stationary lead-out piece 112 is connected to the other first moving contact 1311. The third stationary lead-out piece 113 is connected to one of the second moving contacts 1321, and the fourth stationary lead-out piece 114 is connected to the other second moving contact 1321. With this structural arrangement, the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 can be conveniently used to meet the need for electrical connection between the corresponding moving contact 13a and the external circuit of the relay.

[0155] Furthermore, by configuring the first stationary lead-out assembly 11 to include a first stationary lead-out piece 111 and a third stationary lead-out piece 113 arranged along a first direction, the first stationary lead-out piece 111 and the third stationary lead-out piece 113 can be independently installed in their respective first grooves C1 and third grooves C3. Compared to the method where the first stationary lead-out piece 111 and the third stationary lead-out piece 113 are integrally configured, requiring a deeper groove to be made in the mounting base 30, this embodiment maintains the structural strength of the mounting base 30.

[0156] Accordingly, by configuring the second stationary lead-out assembly 12 to include a second stationary lead-out piece 112 and a fourth stationary lead-out piece 114 arranged along the first direction, the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 can be independently installed in the corresponding second groove C2 and fourth groove C4. Compared to the situation where the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 are integrally set, which requires a deeper groove to be made in the mounting base 30, this embodiment can maintain the structural strength of the mounting base 30.

[0157] In the above embodiment, corresponding grooves are opened at both ends of the base body 31 to set the stationary lead-out pieces. In this way, the depth of the groove in the first direction only needs to be adapted to the assembly requirements of the corresponding stationary lead-out pieces, thereby making the groove depth in the first direction as small as possible to maintain the structural strength of the base body 31.

[0158] For ease of understanding, the effect of the relay structure of this application will be further explained below in conjunction with the installation structure of the contact system 10 in related technologies, but this does not mean that the effect of the relay structure of this application is limited to this.

[0159] For example, in related technologies, in order to meet the need to reduce contact resistance, the moving contact 13a is usually configured to include multiple parallel branches. For example, each moving contact 13a includes six parallel branches, or two moving contacts 13a arranged along the first direction each include three parallel branches, for a total of six parallel branches. In related technologies, the six parallel branches realize current output or input through the same stationary lead piece. Assuming that the stationary lead piece has a dimension of d in the first direction to accommodate current flow, in related technologies, if the relay mounting base 30 is provided with only one mounting cavity for the contact system, then the relay mounting base 30 needs to open a groove with a depth of not less than d in the cavity wall of the mounting cavity to accommodate the installation needs of the stationary lead piece.

[0160] In the embodiments of this application, the first moving contact assembly 131 and the second moving contact assembly 132 are arranged along a first direction and connected in parallel with each other. The first stationary lead-out piece 111 and the third stationary lead-out piece 113 are both connected to one load terminal in the circuit where the relay is used, and the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114 are both connected to another load terminal in the circuit where the relay is used. Based on this, in the relay of this embodiment, if six parallel branches are implemented using the first moving contact 1311 and the second moving contact 1321, the first stationary lead-out piece 111 connected to the first moving contact 1311 only needs to accommodate the current transmission requirements of the first moving contact 1311, and the third stationary lead-out piece 113 connected to the second moving contact 1321 only needs to accommodate the current transmission requirements of the second moving contact 1321. Thus, the first static lead 111 and the third static lead 113 each bear a portion of the current in the six parallel branches. Compared with the related technologies that require the same static lead to bear the current in the six parallel branches, the relay of this application can have the size of the first static lead 111 less than d, and the size of the third static lead 113 less than d.

[0161] Ideally, if the current-conducting capacity of each parallel branch in this application is consistent with that of each parallel branch in related technologies, then the sum of the currents flowing through the first stationary lead 111 and the third stationary lead 113 is consistent with the current flowing through a single stationary lead in related technologies. Correspondingly, in the first direction, the sum of the dimensions of the first stationary lead 111 and the third stationary lead 113 will also be consistent with the dimension d of a single stationary lead in related technologies. Thus, while maintaining contact resistance and current-carrying performance consistent with relays in related technologies, the dimensions of both the first stationary lead 111 and the third stationary lead 113 are less than d. Understandably, if the current flowing through the first moving contact 1311 and the second moving contact 1321 is the same, the current that the first stationary lead-out piece 111 and the third stationary lead-out piece 113 need to share is also the same. In this case, the dimensions of the first stationary lead-out piece 111 and the third stationary lead-out piece 113 in the first direction can be equal, that is, in the first direction, the dimensions of the first stationary lead-out piece 111 and the third stationary lead-out piece 113 are both d / 2. Thus, the depth of the first groove C1 only needs to be d / 2 to meet the assembly requirements of the first stationary lead-out piece 111; correspondingly, the depth of the third groove C3 only needs to be d / 2 to meet the assembly requirements of the third stationary lead-out piece 113. Therefore, the relay of this application, by configuring the moving contact unit 10b as multiple moving contact components 13 arranged along the first direction, can reduce the size requirements of each stationary lead in the lead-out unit 10a in the first direction, thereby reducing the slot depth on the mounting base 30 and avoiding the side wall (e.g., for mounting one of the stationary leads) from being too deep due to excessive slot depth. Figure 5 At least one side of the outer wall surface 30d of the mounting base 30 will become an isolated and unsupported structure. Therefore, the embodiments of this application are beneficial to maintaining the overall structural strength of the mounting base 30 and improving the reliability of the relay.

[0162] It should be noted that the dimensions of the stationary lead in the first direction mentioned above are all designed based on the premise that the thickness and conductivity are consistent, and the stationary lead needs to meet its current transmission performance requirements. Furthermore, considering that the stationary lead is a conductor, the location limiting its current conduction performance is its minimum cross-sectional area. The impact of the slot depth on the mounting base 30 mainly concerns the position corresponding to the inner wall of the base body 31. Therefore, the dimensions of the stationary lead in the first direction mentioned above refer to the position with the minimum cross-sectional area of ​​the stationary lead corresponding to the inner wall of the base body 31. Whether the dimensions of other parts of the stationary lead are set larger or the shape of the stationary lead is not limited here.

[0163] For ease of understanding, the depth of each groove on the inner wall of the seat body 31 is referred to as the "groove depth". In other words, the depth of the groove where each groove connects to the corresponding mounting cavity is referred to as the "groove depth".

[0164] For example, combining Figure 8 and Figure 9 As shown, the depth of the third groove C3 at the inner wall of the seat body 31 is d / 2, therefore the groove depth of the third groove C3 is d / 2. Here, the groove depth of the third groove C3 refers only to the depth at the inner wall of the seat body 31, and does not mean that the depth of the third groove C3 at other locations on the seat body 31 is d / 2. Figure 8 and Figure 9 As shown, the dimension of the third groove C3 extending to the outer wall surface 30d of the seat body 31 (i.e., the position where the third static lead-out piece 113 protrudes from the outer wall of the seat body 31) can be D, where D is greater than or equal to d / 2.

[0165] Combination Figure 8 and Figure 9 As shown, the groove depth of the first groove C1, the second groove C2 and the fourth groove C4 only needs to meet the installation requirements of the corresponding static lead-out pieces, and will not be elaborated on here.

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

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

[0168] In some embodiments, the groove depth of the first groove C1 is less than or equal to 1 / 3 of the depth of the first mounting cavity 301. By setting the first groove C1, the need for the first stationary lead-out piece 111 to be led out from the mounting base 30 is met. At the same time, by controlling the groove depth of the first groove C1, the depth of the first groove C1 is made shallow, which helps to maintain the structural strength of the mounting base 30, making the mounting base 30 less prone to deformation, thereby enhancing the reliability of the relay.

[0169] The portion of the first stationary lead 111 that mates with the first groove C1 has a smaller dimension in the first direction than the other portions of the first stationary lead 111 (such as the connecting terminals of the first stationary lead 111, or the portion of the first stationary lead 111 that is connected to the moving contact 13a) in the first direction. In this way, on the one hand, the first groove C1 is used to meet the assembly requirements of part of the structure of the first stationary lead 111, and on the other hand, the larger dimension of the other portions of the first stationary lead 111 in the first direction helps to ensure the current-carrying area and reduce resistance.

[0170] Accordingly, the groove depth of the second groove C2 is less than or equal to 1 / 3 of the depth of the first mounting cavity 301. The groove depth of the third groove C3 is less than or equal to 1 / 3 of the depth of the second mounting cavity 302. The groove depth of the fourth groove C4 is less than or equal to 1 / 3 of the depth of the second mounting cavity 301. By controlling the groove depth of each groove, it is beneficial to maintain the structural strength of the mounting base 30, making the mounting base 30 less prone to deformation, thereby enhancing the reliability of the relay.

[0171] Similar to the first stationary lead 111, the dimensions of the parts of other stationary leads such as the second stationary lead 112, the third stationary lead 113, and the fourth stationary lead 114 that mate with the corresponding grooves are smaller in the first direction than the dimensions of other parts of the stationary lead in the first direction. This allows the grooves with reduced groove depth to meet the assembly requirements of the corresponding stationary leads. At the same time, the larger dimensions of other parts of each stationary lead in the first direction helps to ensure the current-carrying area and reduce resistance.

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

[0173] For ease of description, the bent portions in the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 are respectively referred to as "first bent portion 111a", "second bent portion 112a", "third bent portion 113a", and "fourth bent portion 114a"; and the connecting terminals therein are respectively referred to as "first connecting terminal 111b", "second connecting terminal 112b", "third connecting terminal 113b", and "fourth connecting terminal 114b".

[0174] In the first stationary lead-out piece 111, the first bending portion 111a is provided, causing the first connecting terminal 111b to extend towards the side of the outer wall surface 30d of the mounting base 30. In the second stationary lead-out piece 112, the second bending portion 112a is provided, causing the second connecting terminal 112b to extend towards the side of the outer wall surface 30d of the mounting base 30. In the third stationary lead-out piece 113, the third bending portion 113a is provided, causing the third connecting terminal 113b to extend towards the side of the outer wall surface 30d of the mounting base 30. In the fourth stationary lead-out piece 114, the fourth bending portion 114a is provided, causing the fourth connecting terminal 114b to extend towards the side of the outer wall surface 30d of the mounting base 30.

[0175] All connection terminals are led out from the same side of the mounting base 30. Specifically, all connection terminals are arranged in the same plane that is parallel to both the first direction and the third direction, thereby making the arrangement of the stationary leads in the relay compact, reducing the size occupied by the relay along the third direction or the first direction, which is conducive to the miniaturization of the relay and makes it easier to adapt to limited installation space, such as the narrow battery compartment space in a car; in addition, it is also conducive to supporting the compact side-by-side installation of multiple relays.

[0176] Furthermore, all connection terminals are located on the outer side of the outer wall surface 30d of the mounting base 30, which is closer to the contact system 10 in the second direction. This reduces the distance between each connection terminal and the moving contact unit 10b in the contact system 10, thereby reducing the amount of conductive material required for each stationary lead-out piece to extend the connection terminal outside the mounting base 30, and consequently lowering costs. The conductive material here includes, but is not limited to, copper or copper alloys.

[0177] Combination Figure 5 , Figure 8 and Figure 9 As shown, the mounting base 30 also has shielding walls 30e on its two side walls facing the third direction, with each shielding wall 30e correspondingly shielding each bend. In this way, while maintaining the connection between the relay and the external device at the connection terminal, the shielding walls 30e can be used to shield the corresponding bends, thereby improving the overall aesthetic appearance of the relay.

[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; no limitation is made here.

[0179] Combination Figures 5 to 7As shown, the mounting base 30 includes a base body 31 and a first mounting plate 32. The first mounting plate 32 is connected to the inner wall of the base body 31. The first mounting plate 32 divides the inner cavity of the base body 31 into a first mounting cavity 301 and a second mounting cavity 302 along a first direction. 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. Thus, the placement of the first mounting plate 32 does not interfere with the installation of the first moving contact assembly 131 and the second moving contact assembly 132, maintaining the ease of installation of the first moving contact assembly 131 and the second moving contact assembly 132 in the mounting base 30. At the same time, since the first mounting plate 32 is connected to the inner wall of the base body 31, the first mounting plate 32 can provide structural reinforcement to the base body 31, making the base body 31 less prone to deformation. Consequently, even if the stationary contact 13b of the first moving contact assembly 131 and the second moving contact assembly 132 is impacted by the moving contact 13c during contact action, causing an impact force on the base body 31, the base body 31 can reduce the probability of deformation or damage under the reinforcement effect of the first mounting plate 32, making the relay less prone to damage and extending the service life of the relay.

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

[0181] Combination Figure 8 and Figure 9 As shown, the mounting base 30 also includes a second mounting plate 33, which is connected to the first mounting plate 32. The second mounting plate 33 divides the space enclosed by the base body 31 into a third mounting cavity 303. One end of the second mounting plate 33 in the first direction forms a third mounting opening by enclosing a portion of the side wall of the base body 31.

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

[0183] Understandably, in embodiments where the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22, both the coil assembly 21 and the armature assembly 22 can be mounted from the third mounting port along the first direction to the third mounting cavity 303.

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

[0185] It should be noted that the second mounting plate 33 can also serve a fixing function. For example, the second mounting plate 33 can provide a rotation support point for one end of the armature assembly 22. Furthermore, the second mounting plate 33 can accommodate the installation needs of the stationary lead-out piece near the electromagnetic system 20.

[0186] Furthermore, combined Figure 8 and Figure 9 As shown, the base body 31 includes a side wall portion 311 and a bottom wall portion 312. The bottom wall portion 312 is connected to the side wall portion 311 and the second mounting plate 33. The second mounting plate 33 and a portion of the side wall portion 312 together form a third mounting cavity 303. Another portion of the side wall portion 312, the first mounting plate 32, and the second mounting plate 33 together form a first mounting cavity 301 and a second mounting cavity 302. The bottom wall portion 312 is parallel to the first mounting plate 32. One end of the electromagnetic system 20 is connected to the bottom wall portion 312, thereby improving the installation stability of the electromagnetic system 20.

[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 both the coil assembly 21 and the armature assembly 22.

[0188] In some embodiments, the armature assembly 22 is connected to a rotating shaft 22a, one end of which is connected to the bottom wall portion 312. The armature assembly 22 can rotate relative to the bottom wall portion 312 about the center line of the rotating shaft 22a. In this embodiment, the rotation of the armature assembly 22 about the center line of the rotating shaft 22a relative to the bottom wall portion 312 provides power for the contact or disconnection of the first moving contact assembly 131 and the second moving contact assembly 132, thereby switching the moving contact unit 10b between a first switch state and a second switch state. The axis of the rotating shaft 22a is parallel to the first direction. Therefore, the armature assembly 22 can be rotatably connected to the bottom wall portion 312 by being assembled into the third mounting cavity 303 of the mounting base 30 along the first direction. Since the first moving contact assembly 131 is assembled into the first mounting cavity 301 of the mounting base 30 along the first direction, and the second moving contact assembly 132 is assembled into the second mounting cavity 302 of the mounting base 30 along the first direction, in the relay of this application, the armature assembly 22, the first moving contact assembly 131 and the second moving contact assembly 132 can be assembled into the mounting base 30 in the same dimension (i.e., the first direction), which makes the assembly operation convenient. Moreover, this structural layout helps to reduce the waste of assembly space, so as to realize the miniaturization of the relay.

[0189] In some embodiments, the extension direction of the second mounting plate 33 is parallel to the first direction. Thus, for the first moving contact assembly 131 and the second moving contact assembly 132 arranged along the first direction, the second mounting plate 33 is less likely to interfere with the assembly of the first moving contact assembly 131 and the second moving contact assembly 132, allowing the first moving contact assembly 131 and the second moving contact assembly 132 to be compactly mounted in the first mounting cavity 301 and the second mounting cavity 302, thereby facilitating the miniaturization of the relay.

[0190] It should be noted that the second mounting plate 33 can be used to position some of the stationary leads in the lead-out unit 10a, thereby improving the installation stability of the stationary leads in the mounting base 30.

[0191] For example, combining Figure 5 and Figure 6 As shown, a first positioning buckle 331 is provided on the second mounting plate 33. Parts of the structure of the first stationary lead-out piece 111 and part of the structure of the third stationary lead-out piece 113 cooperate with the first positioning buckle 331. Thus, the first positioning buckle 331 is used to position the first stationary lead-out piece 111 and the third stationary lead-out piece 113 and limit them along the second direction, making the installation of the first stationary lead-out piece 111 and the third stationary lead-out piece 113 on the mounting base 30 more stable and less prone to loosening. This improves the stability of the stationary contact 13b on the first stationary lead-out piece 111 and the third stationary lead-out piece 113 and stabilizes the performance of the relay.

[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 portion of the structure of the second stationary lead-out piece 112 cooperates with the second positioning buckle 3011. Thus, the second positioning buckle 3011 positions and limits the second stationary lead-out piece 112 along a second direction, making the installation of the second stationary lead-out piece 112 on the mounting base 30 more stable and less prone to loosening. This improves the stability of the stationary contact 13b on the second stationary lead-out piece 112 and enhances the relay's performance.

[0193] Combination Figure 9 As shown, a third positioning buckle 3021 is provided on the inner wall of the second mounting cavity 302 opposite to the second mounting plate 33, and part of the structure of the fourth stationary lead-out piece 114 cooperates with the third positioning buckle 3021. Thus, the third positioning buckle 3021 positions and limits the fourth stationary lead-out piece 114 along the second direction, making the installation of the fourth stationary lead-out piece 114 on the mounting base 30 more stable and less prone to loosening, thereby improving the stability of the stationary contact 13b on the fourth stationary lead-out piece 114 and stabilizing the performance of the relay.

[0194] See again Figure 1 and Figure 2 As shown, the relay also includes a drive mechanism 40, which is disposed between the armature assembly 22 and the contact system 10. The drive mechanism 40 is used to drive the first moving contact assembly 131 and the second moving contact assembly 132 to operate synchronously under the drive of the armature assembly 22, thereby causing the moving contact unit 10b to switch between the first switch state and the second switch state.

[0195] It should be noted that, since the multiple moving contact components 13 of the contact system 10 can connect or disconnect the first stationary lead-out component 11 and the second stationary lead-out component 12 under the drive of the armature component 22, and the pushing mechanism 40 can play a transmission role between the armature component 22 and the contact system 10, the pushing mechanism 40 can push the first moving contact 1311 to the position where the two first moving contact components 1311 of each first moving contact component 131 are in contact with each other or disconnected from each other; correspondingly, the pushing mechanism 40 can push the second moving contact 1321 to the position where the two second moving contact components 1321 of each second moving contact component 132 are in contact with each other or disconnected from each other.

[0196] Combination 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. The two first pushing cards 411 are respectively connected to two first moving contacts 1311, and the two second pushing cards 421 are respectively connected to two second moving contacts 1321. With this structural arrangement, the pushing mechanism 40 utilizes the first set of pushing cards 41 and the second set of pushing cards 42, which are separately disposed within the mounting base 30 in the first direction. This avoids the problem of excessively large pushing cards in the first direction, which could easily deform or break, when multiple sets of moving contact components 13 need to be driven simultaneously in the first direction. This improves the reliability of the pushing mechanism 40 in driving such a large contact system 10.

[0197] The armature assembly 22 includes a first connecting arm 221 and a second connecting arm 222. The armature assembly 22 is rotatable about a pivot 22a parallel to a first direction, such that the driving ends of the first connecting arm 221 and the second connecting arm 222 move in opposite directions. Two first push clips 411 are correspondingly connected to the first connecting arm 221 and the second connecting arm 222. Two second push clips 421 are correspondingly connected to the first connecting arm 221 and the second connecting arm 222. The ends of the two first push clips 411 away from the first moving contact assembly 131 are respectively connected to the driving ends of the first connecting arm 221 and the second connecting arm 222, and the ends of the two second push clips 421 away from the second moving contact assembly 132 are respectively connected to the driving ends of the first connecting arm 221 and the second connecting arm 222.

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

[0199] For ease of understanding, the following description of the arrangement of the first moving contact component 131 on the seat body 31 is based on the implementation of the two first moving contact elements 1311 of the first moving contact component 131 being in contact with or disconnected from each other, but it is not limited to this.

[0200] Combination Figure 3 and Figure 6As shown, when the armature assembly 22 rotates about the pivot 22a parallel to the first direction, the pushing mechanism 40 can push the swing end 13a2 of the first moving contact 1311 under the drive of the armature assembly 22, so that the swing end 13a2 can contact or separate from the adjacent first moving contact 1311 along the second direction.

[0201] In the first movable contact assembly 131, the swing end 13a2 of any one of the first movable contact 1311 corresponds to the fixed end 13a1 of the other first movable contact 1311, such that the stationary contact 13b and the movable contact 13c of one first movable contact 1311 are respectively opposite to the movable contact 13c and the stationary contact 13b of the other first movable contact 1311. The swing end 13a2 of one first movable contact 1311 is connected to one first push card 411, and the swing end 13a2 of the other first movable contact 1311 is connected to the other first push card 411. Thus, when the two first push cards 411 move in opposite directions, the swing ends 13a2 of the two first movable contacts 1311 move in opposite directions under the drive of the corresponding two first push cards 411, causing the two sets of corresponding movable contacts 13c and stationary contacts 13b of the two first movable contacts 1311 to come into contact with or separate from each other.

[0202] Accordingly, in the two second moving contacts 1321 of the second moving contact assembly 132, the swing end 13a2 of any one second moving contact 1321 corresponds to the fixed end 13a1 of the other second moving contact 1321, such that the stationary contact 13b and the moving contact 13c of one second moving contact 1321 are respectively opposite to the moving contact 13c and the stationary contact 13b of the other second moving contact 1321. The swing end 13a2 of one second moving contact 1321 is connected to one second push card 421, and the swing end 13a2 of the other second moving contact 1321 is connected to the other second push card 421. Thus, when the two second push cards 421 move in opposite directions, the swing ends 13a2 of the two second moving contacts 1321 move in opposite directions under the drive of the corresponding two second push cards 421, causing the two sets of corresponding moving contacts 13c and stationary contacts 13b of the two second moving contacts 1321 to come into contact with or separate from each other.

[0203] In some embodiments, the armature assembly 22 is located between the coil assembly 21 and the contact system 10 along the second direction. This allows the armature assembly 22 to be closer to the contact system 10, thereby reducing the length of the lever arm that drives the contact system 10 to operate, resulting in a compact structure and miniaturization of the relay.

[0204] Taking the armature assembly 22, which includes a first connecting arm 221 and a second connecting arm 222, as an example, the first connecting arm 221 and the second connecting arm 222 are located on the side of the armature assembly 22 facing away from the coil assembly 21 along the second direction. The driving end of the first connecting arm 221 and the driving end of the second connecting arm 222 are respectively located on both sides of the armature assembly 22 along the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

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

[0206] It should be noted that the number of push cards in the pushing mechanism 40 is not limited to the first set of push cards 41 and the second set of push cards 42. In some embodiments, the pushing mechanism 40 includes multiple sets of push cards, where multiple sets of push cards refer to two or more sets of push cards. Each set of push cards is arranged along a first direction and is respectively connected to each movable contact component 13 arranged along the first direction. The structure of each set of push cards and the connection structure with each movable contact component 13 are not limited here.

[0207] In some embodiments, since there may be multiple sets of movable contact components 13, the installation method of multiple sets of movable contact components 13 in the mounting base 30 may be that some movable contact components 13 are installed in the first mounting cavity 301, and other movable contact components 13 are installed in the second mounting cavity 301.

[0208] For example, in an embodiment where the mounting base 30 includes a base body 31 and a first mounting plate 32, the first mounting plate 32 divides the inner cavity of the base body 31 into a first mounting cavity 301 and a second mounting cavity 302 along a first direction. At least one set of movable contact components 13 can be installed from the first mounting port into the first mounting cavity 301, and at least another set of movable contact components 13 can be installed from the second mounting port into the second mounting cavity 302.

[0209] In an embodiment where the electromagnetic system 20 includes a coil assembly 21 and an armature assembly 22, the armature assembly 22 moves based on the polarity change of the coil assembly 21 and drives each moving contact assembly 13 to move synchronously via each set of push clips. The electromagnetic system 20 can be installed into the base body 31 through either the first mounting port or the second mounting port to improve assembly efficiency.

[0210] Combination Figures 10 to 12 As shown, in some embodiments, the contact system 10 includes at least two moving contact units 10b and at least two lead-out units 10a, with each lead-out unit 10a corresponding to one of the moving contact units 10b. Each moving contact unit 10b is arranged along a second direction perpendicular to the first direction. When each moving contact unit 10b is in a first switching state, it is electrically connected to its adjacent moving contact unit 10b, such that in the two lead-out units 10a corresponding to the two adjacent moving contact units 10b, the first 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. When each moving contact unit 10b is in a second switching state, each lead-out unit 10a is disconnected from each other. This allows the contact system 10 to switch between series and parallel functions to adapt to certain special application scenarios, such as in automotive battery management systems to optimize the charging and discharging functions of the battery pack.

[0211] The first stationary lead-out assembly 11 and the second stationary lead-out assembly 12 of the lead-out unit 10a are respectively arranged on both sides of the corresponding moving contact element 10b along a third direction. When the two moving contacts 13a in each moving contact unit 10b are separated from each other, the adjacent moving contacts 13a in at least two moving contact units 10b are connected in parallel with each other, and a stationary lead-out piece in one lead-out unit 10a is electrically connected to a stationary lead-out piece in another lead-out unit 10a, thereby enabling the contact system 10 to switch between series and parallel functions.

[0212] For ease of understanding, the following example uses a contact system 10 that includes two moving contact units 10b and two lead-out units 10a.

[0213] Continue to combine Figures 11 to 12 As shown, in some embodiments, the contact system 10 includes two moving contact units 10b, namely a first moving contact unit 101 and a second moving contact unit 102, and the contact system 10 includes two lead-out units 10a, namely a first lead-out unit 103 and a second lead-out unit 104.

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

[0215] Regarding the structure of the first movable contact unit 101 and the second movable contact unit 102, please refer to the description of movable contact unit 10b above; correspondingly, the structure of the first lead-out unit 103 and the second lead-out unit 104 can be referred to the description of lead-out unit 10a above, and will not be repeated here. For example, the first movable contact unit 101 and the second movable contact unit 102 each include the aforementioned first static lead-out component 11 and second static lead-out component 12.

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

[0217] For ease of description, combined with Figures 10 to 12 As shown, the first static lead-out piece 111, the second static lead-out piece 112, the third static lead-out piece 113, and the fourth static lead-out piece 114 in the first lead-out unit 10a are represented by "static lead-out piece 1 P1", "static lead-out piece 2 P2", "static lead-out piece 3 P3", and "static lead-out piece 4 P4" respectively; the second static lead-out unit 10a is represented by "static lead-out piece 5 P5", "static lead-out piece 6 P6", "static lead-out piece 7 P7", and "static lead-out piece 8 P8" respectively. The corresponding connection terminals of each static lead-out piece are sequentially named "terminal 1 D1", "terminal 2 D2", "terminal 3 D3", "terminal 4 D4", "terminal 5 D5", "terminal 6 D6", "terminal 7 D7", and "terminal 8 D8".

[0218] Combination Figure 12 As shown, in some embodiments, the movable contact 13a of the first movable contact unit 101, which is closer to the second movable contact unit 102, is provided with stationary contacts 13b and movable contacts 13c on both sides in the second direction. The fixed end 13a1 of the movable contact 13a of the second movable contact unit 102, which is closer to the first movable contact unit 101, is provided with stationary contacts 13b on both sides in the second direction. Correspondingly, the swing end 13a2 of the movable contact 13a is provided with movable contacts 13c on both sides in the second direction.

[0219] The moving contact 13a of the second moving contact unit 102, which is closer to the first moving contact unit 101, has stationary contacts 13b and moving contacts 13c on both sides in the second direction. The fixed end 13a1 of the moving contact 13a of the second moving contact unit 102, which is closer to the first moving contact unit 101, has stationary contacts 13b on both sides in the second direction. Correspondingly, the swing end 13a2 of the moving contact 13a has moving contacts 13c on both sides in the second direction. When the two moving contacts 13a of the first moving contact unit 101 and the two moving contacts 13a of the second moving contact unit 102 are separated, the adjacent moving contacts 13a of the first and second moving contact units 101 and 102 are in contact through the corresponding moving contacts 13c and stationary contacts 13b, thereby achieving an electrical connection between the first and second moving contact units 101 and 102, so that each lead-out unit 10a has a stationary lead-out component connected in series.

[0220] In the above embodiments, not only can two moving contacts 13a in the same moving contact unit 10b be brought into contact with each other, but two moving contacts 13a in different moving contact units 10b can also be brought into contact with each other. Correspondingly, two moving contacts 13a in the same moving contact unit 10b can be brought into contact with each other, and two moving contacts 13a in different moving contact units 10b can also be brought into contact with each other. This allows the relay to achieve series-parallel switching using the first moving contact unit 101 and the second moving contact unit 102.

[0221] Continue to combine Figures 10 to 12 As shown, the structural arrangement in which the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 all have bent portions is also applicable to the case of two sets of lead-out units 10a. For example, as Figure 10 As shown, in some embodiments, whether it is the first lead-out unit 103 or the second lead-out unit 104, all the connection terminals (i.e., terminal one D1 to terminal eight D8) are arranged in the same plane parallel to both the first direction and the third direction. Specifically, stationary lead-out pieces one P1, two P2, three P3, four P4, five P5, six P6, seven P7, and eight P8 each have a bent portion, and the connection terminals are led out to the outside of the base body 31 along the second direction through their respective bent portions, so that all the connection terminals are arranged in the same plane parallel to both the first direction and the third direction. With this structural arrangement, the connection terminals are located on the same side surface of the base body 31, occupying little space, which facilitates the electrical connection between the relay and external components such as circuit boards.

[0222] Combination Figure 10 and Figure 11As shown, in the first lead-out unit 103 and the second lead-out unit 104, the connection terminals (i.e., the first connection terminal 111b and the third connection terminal 113b) of one of the first stationary lead-out pieces 111 and 113 are arranged along a first direction between the connection terminals of the first stationary lead-out piece 111 and the third stationary lead-out piece 113 of the other, for example, as Figure 10 As shown, terminal 5 D5 and terminal 7 D7 are located between terminal 1 D1 and terminal 3 D3. Alternatively, in other embodiments, the positions of terminal 1 D1 and terminal 5 D5 can be interchanged, and the positions of terminal 3 D3 and terminal 7 D7 can be interchanged, so that terminal 1 D1 and terminal 3 D3 are located between terminal 5 D5 and terminal 7 D7. Correspondingly, in the first lead-out unit 103 and the second lead-out unit 104, the connection terminals (i.e., the second connection terminal 112b and the fourth connection terminal 114b) of one of the second stationary lead-out pieces 112 and 114 are arranged along a first direction between the connection terminals of the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 of the other. In this embodiment, the contact system 10 can perform series-parallel switching to adapt to certain special application scenarios, such as in automotive battery management systems to optimize the charging and discharging functions of the battery pack. With the above structural arrangement, the connection terminals for connecting at least one group to the same load terminal can be placed close together, thereby facilitating subsequent circuit connection and insulation design between connection terminals connecting different load terminals.

[0223] Continue to combine Figures 10 to 12 As shown, the first movable contact unit 101 is located between the armature assembly 22 and the second movable contact unit 102, that is, the second movable contact unit 102 is located on the side of the first movable contact unit 101 facing away from the armature assembly 22. In the first movable contact unit 101, the first movable contact 1311 farther from the second movable contact unit 102 is connected to the stationary lead-out piece 1 P1, the first movable contact 1311 closer to the second movable contact unit 102 is connected to the stationary lead-out piece 2 P2, the second movable contact 1321 farther from the second movable contact unit 102 is connected to the stationary lead-out piece 3 P3, and the first movable contact 1311 closer to the second movable contact unit 102 is connected to the stationary lead-out piece 4 P4.

[0224] In the second movable contact unit 102, the first movable contact 1311, which is closer to the first movable contact unit 101, is connected to the stationary lead-out piece five P5; the first movable contact 1311, which is farther from the first movable contact unit 101, is connected to the stationary lead-out piece six P6; the second movable contact 1321, which is closer to the first movable contact unit 101, is connected to the stationary lead-out piece seven P7; and the second movable contact 1321, which is farther from the first movable contact unit 101, is connected to the stationary lead-out piece eight P8.

[0225] In this embodiment, terminal D6 of stationary lead-out piece 6 P6 and terminal D1 of stationary lead-out piece 1 P1 are arranged along a third direction; terminal D8 of stationary lead-out piece 8 P8 and terminal D3 of stationary lead-out piece 3 P3 are arranged along a third direction; terminal D2 of stationary lead-out piece 2 P2 and terminal D4 of stationary lead-out piece 4 P4 are both located along a first direction between terminal D6 of stationary lead-out piece 6 P6 and terminal D8 of stationary lead-out piece 8 P8; and terminal D5 of stationary lead-out piece 5 P5 and terminal D7 of stationary lead-out piece 7 P7 are both located between terminal D1 of stationary lead-out piece 1 P1 and terminal D3 of stationary lead-out piece 3 P3. With this structural arrangement, at least one set of two connection terminals at the same end used for connecting the circuit can be arranged adjacently to facilitate parallel connection between them. Compared to parallel connection terminals being separated from each other by other connection terminals, this structural arrangement of the present application is beneficial for reducing connection difficulty and for isolating 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 stationary lead-out pieces 111 (i.e., terminal one D1 and terminal five D5), the connection terminals of the two second stationary lead-out pieces (i.e., terminal two D2 and terminal six D6), the connection terminals of the two third stationary lead-out pieces (i.e., terminal three D3 and terminal seven D7), and the connection terminals of the two fourth stationary lead-out pieces (i.e., terminal four D4 and terminal eight D8) are all arranged adjacent to each other in the first direction. Since the first stationary lead-out pieces 111 and the second stationary lead-out pieces 112 are used to connect with the first moving contact assembly 131 (located in the first mounting cavity 301), and the third stationary lead-out pieces 113 and the fourth stationary lead-out pieces 114 are used to connect with the second moving contact assembly 131 (located in the second mounting cavity 302), the arrangement of the connection terminals in this embodiment will ensure that each connection terminal corresponds to the outer wall of the mounting cavity where the corresponding moving contact assembly 13 is located, thereby reducing the structural complexity of each stationary lead-out piece and reducing the amount of conductive material required when manufacturing the stationary lead-out pieces.

[0227] Combination Figure 10 As shown, the connection terminals (i.e., terminals D5 and D7) of the first stationary lead-out piece 111 and the third stationary lead-out piece 113, located in the middle along the first direction, are used to form a series connection with the connection terminals (i.e., terminals D2 and D4) of the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114, also located in the middle along the first direction. Based on this adjacent arrangement of the connection terminals used for series connection, in a power supply system for a battery pack using a relay, the length of the wires between the series-connected battery packs can be shortened, reducing line resistance and energy loss, especially in high-current scenarios. Furthermore, this arrangement can also prevent current shift due to uneven impedance on both sides of the line, thereby improving the battery pack's balance.

[0228] It should be noted that the connection terminal in the middle is used to realize the series connection function, while the connection terminals on both sides are used for parallel connection. This arrangement helps to flexibly adapt to the battery module expansion needs.

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

[0230] In some embodiments, the first isolator 50 is connected to one of the two first stationary leads (i.e., stationary lead one P1 and stationary lead five P5); the second isolator 60 is connected to one of the two second stationary leads (i.e., stationary lead two P2 and stationary lead six P6); the third isolator 70 is connected to one of the two third stationary leads (i.e., stationary lead three P3 and stationary lead seven P7); and the fourth isolator 80 is connected to one of the two fourth stationary leads (i.e., stationary lead four P4 and stationary lead eight P8).

[0231] The first isolator 50 electrically isolates stationary lead-out piece 1 (P1) and stationary lead-out piece 5 (P5), thus increasing the creepage distance between them. The second isolator 60 electrically isolates stationary lead-out piece 2 (P2) and stationary lead-out piece 6 (P6), thus increasing the creepage distance between them. The third isolator 70 electrically isolates stationary lead-out piece 3 (P3) and stationary lead-out piece 7 (P7), thus increasing the creepage distance between them. The fourth isolator 80 electrically isolates stationary lead-out piece 4 (P4) and stationary lead-out piece 8 (P8), thus increasing the creepage distance between them.

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

[0233] The first isolation member 50 and the third isolation member 70 are mirror-symmetrical about a plane perpendicular to the first direction. The second isolation member 60 and the fourth isolation member 80 are mirror-symmetrical about a plane perpendicular to the first direction. The first stationary lead-out piece 111 and the third stationary lead-out piece 113, located in the same lead-out unit 10a, are mirror-symmetrical about a plane perpendicular to the first direction. For example, stationary lead-out piece 1 P1 and stationary lead-out piece 3 P3 are mirror-symmetrical about a plane perpendicular to the first direction. Furthermore, in some embodiments, stationary lead-out piece 5 P5 and stationary lead-out piece 7 P7 are mirror-symmetrical about a plane perpendicular to the first direction.

[0234] The second stationary lead-out piece 112 and the fourth stationary lead-out piece 114, located in the same lead-out unit 10a, are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry. For example, stationary lead-out piece 2 P2 and stationary lead-out piece 4 P4 are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry. Furthermore, in some embodiments, stationary lead-out piece 6 P6 and stationary lead-out piece 8 P8 are mirror-symmetrical with a plane perpendicular to the first direction as their plane of symmetry.

[0235] In the above embodiments, the mirror-symmetric structure simplifies the processing and installation of each component. This mirror-symmetric structure also facilitates the assembly of the relay components and improves space utilization, thus enabling relay miniaturization. Furthermore, this design simplifies the structure, allowing at least some static leads to be shared, saving production costs. In addition, it ensures that each static lead has a balanced current-carrying capacity.

[0236] It should be noted that, in combination Figure 10 , Figure 11 and Figure 13 As shown, in the embodiment where the relay includes a first lead-out unit 103 and a second lead-out unit 104, the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4 on the mounting base 30 are all in two sets to accommodate the need for the corresponding stationary lead-out pieces in the two sets of lead-out units 10a (first lead-out unit 103 and second lead-out unit 104) to be led out from the mounting base 30. The structural configuration of the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4 will not be described in detail here.

[0237] Combination Figure 14 and Figure 15As shown, the first isolation member 50 includes a first barrier 51 and a second barrier 52. The first barrier 51 is located between the outer wall surface 30d of the mounting base 30 and the connection terminal of one of the first stationary leads 111 (i.e., stationary lead-ahead P1 or stationary lead-ahead P5). That is, the first barrier 51 may be located between the outer wall surface 30d of the mounting base 30 and terminal D1, or the first barrier 51 may be located between the outer wall surface 30d of the mounting base 30 and terminal D5. The second barrier 52 is connected to the first barrier 51. The second barrier 52 is located along a first direction between the connection terminals of the two first stationary leads 111 (i.e., stationary lead-ahead P1 and stationary lead-ahead P5), that is, the second barrier 52 is located between terminal D1 and terminal D5, thereby increasing the creepage distance of the connection terminals of the two first stationary leads 111 (i.e., terminal D1 and terminal D5) in the first direction. Therefore, in this embodiment, under the shielding of the first baffle 51 and the second baffle 52, the creepage distance between the surface of terminal D1 and terminal D5 facing the outer wall 30d of the mounting base 30 is increased.

[0238] The first isolation member 50 also includes a third baffle 53, which is connected to the first baffle 51 and the second baffle 52 on the inner side in the third direction (i.e., on the side closer to the center of the mounting base 30 in the third direction). The first baffle 51, the second baffle 52 and the third baffle 53 are connected and together form a first receiving groove 50a with a first opening. The connection terminal of one of the first stationary leads 111 (i.e., stationary lead-ahead P1 or stationary lead-ahead P5) is received in the first receiving groove 50a and exposed from the first opening of the first isolation member 50. In this embodiment, due to the provision of the third baffle 53, the creepage distance of the connection terminals of the two first stationary leads 111 (i.e., terminal D1 and terminal D5) on the inner side in the first direction can be increased, avoiding current breakdown of terminal D1 and terminal D5 at the corner positions. By providing the first opening, the connection terminal at the first receiving groove 50a can be reliably connected to the outside.

[0239] Combination Figure 16 and Figure 17As shown, the second isolator 60 includes a fourth barrier 61 and a fifth barrier 62. The fourth barrier 61 is located between the outer wall surface 30d of the mounting base 30 and the connection terminal of one of the second stationary leads 112 (i.e., stationary lead two P2 or stationary lead six P6). That is, the fourth barrier 61 can be located between the outer wall surface 30d of the mounting base 30 and terminal two D2, or the fourth barrier 61 can be located between the outer wall surface 30d of the mounting base 30 and terminal six D6. The fifth barrier 62 is connected to the fourth barrier 61. The fifth barrier 62 is located along a first direction between the connection terminals of the two second stationary leads 112 (i.e., stationary lead two P2 and stationary lead six P6), thereby increasing the creepage distance between the connection terminals of the two second stationary leads 112 (i.e., terminal two D2 and terminal six D6) in the first direction. Therefore, in this embodiment, the creepage distance between terminals D2 and D6 on the side facing the outer wall 30d of the mounting base 30 is increased under the shielding of the fourth barrier 61 and the fifth barrier 62.

[0240] The second isolator 60 further includes a sixth baffle 63, which is connected to the fourth baffle 61 and the fifth baffle 62 on the inner side in the third direction. The fourth baffle 61, the fifth baffle 62 and the sixth baffle 63 are connected and together enclose a second receiving groove 60a with a second opening. The connection terminal of one of the second stationary leads 112 (i.e., stationary lead two P2 or stationary lead six P6) is received in the second receiving groove 60a and exposed from the second isolator 60 through the second opening. In this embodiment, the presence of the sixth baffle 63 increases the creepage distance of the connection terminals of the two second stationary leads 112 (i.e., terminal two D2 and terminal six D6) on the inner side in the first direction, preventing current breakdown at the corners of terminal two D2 and terminal six D6. By providing the second opening, the connection terminal at the second receiving groove 60a can be reliably connected to the outside.

[0241] Combined again Figure 10 , Figure 11 and Figure 13 As shown, the mounting base 30 has independently provided first grooves C1, second grooves C2, third grooves C3, and fourth grooves C4 corresponding to the first lead-out unit 103 and the second lead-out unit 104. The first isolation member 50, second isolation member 60, third isolation member 70, and fourth isolation member 80 can be partially disposed within their respective grooves. For example, each of the first isolation member 50, second isolation member 60, third isolation member 70, and fourth isolation member 80 has a clamping part S, which respectively engages with the first groove C1, second groove C2, third groove C3, and fourth groove C4. This allows for convenient installation of the corresponding isolation members using these grooves, improving the installation stability of the isolation members.

[0242] The clamping part S is used to connect with the corresponding bent part, and the clamping part S is limited to the relay housing and / or the corresponding bent part in the first direction, the second direction and the third direction.

[0243] Each clamping part S is provided with a clamping groove to mate with the corresponding stationary lead-out piece. The clamping grooves of the clamping parts S are used to improve the assembly stability between each isolator and the corresponding stationary lead-out piece, thereby enhancing the reliability of the relay. It should be noted that the clamping part S only needs to be able to mate with the corresponding groove; there are no limitations on this. The clamping groove only needs to be able to clamp a portion of the structure of the corresponding stationary lead-out piece to improve the assembly stability between the isolator and the corresponding stationary lead-out piece. The shape of the clamping part S and the clamping groove are not limited here.

[0244] In some embodiments, the relay further includes two mounting covers; the two mounting covers are respectively fixed to both ends of the mounting base 30 along the first direction and form a relay housing with the mounting base 30, and the two mounting covers respectively cover the first mounting port and the second mounting port. The clamping part S is limited and engaged with the relay housing and / or the corresponding lead-out unit 10a along the first direction, the second direction and the third direction, thereby improving the installation stability of the corresponding isolator.

[0245] In some implementations, combined Figure 8 , Figure 9 and Figure 13 As shown, the mounting base 30 has a first end face 30a and a second end face 30b in a first direction. The first groove C1 and the second groove C2 both extend along the first direction to the first end face 30a, and the third groove C3 and the fourth groove C4 both extend along the first direction to the second end face 30b. The first groove C1, the second groove C2, the third groove C3, and the fourth groove C4 all extend to the inner wall surface 30c and the outer wall surface 30d of the mounting base 30, and each forms an inner groove opening on the inner wall surface 30c and an outer groove opening on the outer wall surface 30d, respectively. Understandably, the inner groove opening communicates with the inner cavity of the mounting base 30. Taking the mounting base 30 having a first mounting cavity 301 and a second mounting cavity 302 as an example, the inner groove opening C11 of the first groove C1 and the inner groove opening C21 of the second groove both communicate with the first mounting cavity 301, and the inner groove opening C31 of the third groove C3 and the inner groove opening C41 of the fourth groove C4 both communicate with the second mounting cavity 302.

[0246] In some embodiments, the inner groove is located on the side wall of the mounting base 30 parallel to the second direction, and the outer groove is located on the outer wall surface 30d of the mounting base 30 that is closer to the second moving contact unit 102 in the second direction. Thus, each groove can accommodate the corresponding stationary lead-out piece from the inside of the mounting base 30 to the outside. At the same time, since the first groove C1 is located on the side wall of the mounting base 30 parallel to the second direction, that is, the side wall of the mounting base 30 extending parallel to the second direction forms the first groove C1 to accommodate stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5. The side wall is provided with a thickened portion corresponding to stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5, which is beneficial for reliably supporting stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5 along the second direction and enhancing the installation stability of stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5. In other words, this structural arrangement makes it less likely for stationary lead-out piece 1 P1 and stationary lead-out piece 5 P5 to loosen or deform when subjected to the contact force of the moving and stationary contacts 13b in the second direction, thereby improving the reliability of the relay.

[0247] The depth of the inner groove C11 of the first groove C1 and the inner groove C21 of the second groove in the first direction is less than or equal to 1 / 3 of the depth of the first mounting cavity 301. This shallow depth of the inner groove prevents the two sidewalls of the first mounting cavity 301 located in the third direction from being divided into at least two relatively independent parts. This allows the two sidewalls in the third direction to maintain good structural strength and not easily deform. In addition, it can also prevent at least one side of the sidewall on the side where the outer surface 30d is located from being separated from other parts by the groove (such as the second groove C2) extending in the first direction, and prevent the sidewall from being unable to withstand the contact pressure when the moving contact and the stationary contact are in contact and thus deforming.

[0248] The depth of the inner groove C31 of the third groove C3 and the inner groove C41 of the fourth groove C4 in the first direction is less than or equal to 1 / 3 of the depth of the second mounting cavity 302. This shallow depth of the inner groove prevents the two side walls of the second mounting cavity 302 located in the third direction from being divided into at least two relatively independent parts. This allows the two side walls in the third direction to maintain good structural strength and not easily deform. In addition, it can also prevent at least one side of the side wall on the side where the outer surface 30d is located from being separated from other parts by the groove (such as the third groove C3) extending in the first direction, and prevent the side wall from being unable to withstand the contact pressure when the moving contact and the stationary contact are in contact and thus deforming.

[0249] It should be noted that the outer slots C12 of the first groove C1, C22 of the second groove C2, C32 of the third groove, and C42 of the fourth groove C4 are all located on the outer side of the outer wall surface 30d of the mounting base 30, which is closer to the contact system 10 in the second direction. Thus, the connection terminals of each stationary lead-out piece extending from these outer slots of the mounting base 30 can be arranged in the same plane parallel to the outer wall surface 30d, which facilitates the miniaturization of the relay. Furthermore, it reduces the conductive material consumed by each stationary lead-out piece for extending connection terminals outside the mounting base 30, thereby reducing costs.

[0250] In other implementations, as long as the distance between adjacent connection terminals is large enough, insulation of adjacent connection terminals is not required.

[0251] It should be noted that the stationary leads in the relay are not limited to being bent out to the same outer wall surface 30d of the base body 31.

[0252] For example, combining Figure 18 and Figure 19 As shown, static lead-out pieces P1, P2, P3, P4, P5, P6, P7, and P8 all protrude from the main body 31 along a third direction. Figure 21 As shown, the mounting base 30 has corresponding grooves for each stationary lead-out piece. Because... Figure 21 Due to perspective, Figure 21 Only two sets of first grooves C1, two sets of second grooves C2, and two sets of fourth grooves C4 are shown. In conjunction with the aforementioned embodiment that includes a third groove C3, in this embodiment, the mounting base 30 also has two sets of third grooves C3. Thus, each stationary lead-out piece passes through the mounting base 30 from the corresponding groove. The structural configuration of each stationary lead-out piece and each groove will not be described in detail here.

[0253] The lead-out unit 10a includes a first external lead-out member 10a1, a second external lead-out member 10a2, a third external lead-out member 10a3, and a fourth external lead-out member 10a4. The first static lead-out piece P1 and the third static lead-out piece P3 are connected through the first external lead-out member 10a1 to form the same lead-out end, and the second static lead-out piece P2 and the fourth static lead-out piece P4 are connected through the second external lead-out member 10a2 to form the same lead-out end, thereby enabling the first moving contact component 131 and the second moving contact component 132 of the first moving contact unit 101 to be connected in parallel.

[0254] The stationary lead-out piece 5 P5 and the stationary lead-out piece 7 P7 are connected by a third external lead-out piece 10a3 to form the same lead-out end, and the stationary lead-out piece 6 P6 and the stationary lead-out piece 8 P8 are connected by a fourth external lead-out piece 10a4 to form the same lead-out end, thereby enabling the first moving contact assembly 131 and the second moving contact assembly 132 of the second contact unit to be connected in parallel.

[0255] For ease of understanding, the two opposing sidewalls of the sidewall portion 311 of the seat body 31 in the third direction will be referred to as "first sidewall 311a" and "second sidewall 311b". In some embodiments, the sidewall portion 311 of the seat body 31 further includes a third sidewall 311c and a fourth sidewall 311d, which are disposed opposite to each other in the second direction. The two ends of the third sidewall 311c are connected to the first sidewall 311a and the second sidewall 311b, and the two ends of the fourth sidewall 311d are connected to the first sidewall 311a and the second sidewall 311b. Thus, the space enclosed by the first sidewall 311a, the second sidewall 311b, the third sidewall 311c, and the fourth sidewall 311d is the space enclosed by the seat body 31.

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

[0257] In some embodiments, when both the first moving contact unit 101 and the second moving contact unit 102 are in the first switching state, two adjacent moving contacts 13a in the first lead-out unit 103 and the second moving contact unit 102 are connected in parallel. That is, the moving contact 13a in the first moving contact unit 101 that is closer to the second moving contact unit 102 and the moving contact 13a in the second moving contact unit 102 that is closer to the first moving contact unit 101 are connected in parallel. Thus, the second stationary lead-out piece 112 in the first lead-out unit 103 is electrically connected to the first stationary lead-out piece 111 of the second lead-out unit 104, and the fourth stationary lead-out piece 114 in the first lead-out unit 103 is electrically connected to the third stationary lead-out piece 113 of the second lead-out unit 104. Since the second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 in the first lead-out unit 103 are connected through the second external lead-out piece 10a2, and the first stationary lead-out piece 111 and the third stationary lead-out piece 113 in the second lead-out unit 104 are connected through the third external lead-out piece 10a3, in this embodiment, by utilizing the fact that both the first moving contact unit 101 and the second moving contact unit 102 are in the first switching state, and the two adjacent moving contacts 13a in the first lead-out unit 103 and the second moving contact unit 102 are connected in parallel, the series connection between the second external lead-out piece 10a2 corresponding to the first lead-out unit 103 and the third external lead-out piece 10a3 corresponding to the second lead-out unit 104 is realized.

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

[0259] Correspondingly, the first stationary lead-out component 11 and the second stationary lead-out component 12 of the second lead-out unit 104 are electrically connected through the second moving contact unit 102. That is, in the second lead-out unit 104, the third external lead-out component 10a3 corresponding to the first stationary lead-out component 11 and the fourth external lead-out component 10a4 corresponding to the second stationary lead-out component 12 are connected in series. Thus, in this second switching state, the contact system 10 has two independent conductive paths. In practical applications, when the first external lead-out component 10a1 corresponding to the first lead-out unit 103 and the third external lead-out component 10a3 corresponding to the second lead-out unit 104 are connected to the same end of the external circuit, and the second external lead-out component 10a2 corresponding to the first lead-out unit 103 and the fourth external lead-out component 10a4 corresponding to the second lead-out unit 104 are connected to the other end of the external circuit, the two conductive paths are arranged in parallel.

[0260] Therefore, in the embodiments of this application, the relay can realize series-parallel switching, thus having a wider range of application scenarios.

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

[0262] When the relay is equipped with a set of moving contact units 10a, the number of the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 can all be one, and all of them protrude from the base body 31 in a third direction. Further, the first stationary lead-out piece 111 and the third stationary lead-out piece 113 both protrude from the first sidewall 311a in a third direction, and are connected to each other via a first external lead-out piece 10a1. The second stationary lead-out piece 112 and the fourth stationary lead-out piece 114 both protrude from the sidewall of the mounting base 30 in a third direction, and are connected to each other via a second external lead-out piece 10a2.

[0263] In the second switching state, the first stationary lead 111 is electrically connected to the second stationary lead 112 through the first moving contact assembly 131, and the third stationary lead 113 is electrically connected to the fourth stationary lead 114 through the second moving contact assembly 132. The first stationary lead 111 and the third stationary lead 113 are connected through the first external lead 10a1, and the second stationary lead 112 and the fourth stationary lead 114 are connected through the second external lead 10a2. The first moving contact assembly 131 and the second moving contact assembly 132 can be connected in parallel to increase the number of parallel branches, thereby reducing the overall contact resistance of the contact system 10.

[0264] Combination Figure 19As shown, the first stationary lead-out piece 111 and the second stationary lead-out piece 112 are provided with limiting mating portions ST extending in the second direction. The limiting mating portions ST mate with the mounting base 30 and limit the position of the stationary lead-out piece in the third direction relative to the mounting base 30. This prevents the corresponding stationary lead-out pieces from moving relative to the mounting base 30 in the third direction and becoming loose or detached from the mounting base 30, thereby improving the installation stability of the stationary lead-out pieces on the side wall of the mounting base 30. Understandably, the third stationary lead-out piece 113 and the fourth stationary lead-out piece 114 can also be provided with limiting mating portions ST that mate with the mounting base 30, thereby improving stability in the third direction. Of course, in some embodiments, at least one of the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 is provided with a limiting engagement portion ST, so that the corresponding stationary lead-out piece engages with the mounting base 30 through the limiting engagement portion ST, thereby improving the stability of the stationary lead-out piece. This also improves the stability of some stationary lead-out pieces in the relay compared to when none of the stationary lead-out pieces are provided with a limiting engagement portion ST. Since the first stationary lead-out piece 111, the second stationary lead-out piece 112, the third stationary lead-out piece 113, and the fourth stationary lead-out piece 114 respectively engage with the first groove C1, the second groove C2, the third groove C3, and the fourth groove C4, these grooves provide a good limiting effect for the corresponding stationary lead-out pieces in the first and second directions.

[0265] Combination 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 multiple moving contact components 13 using the space in the first direction, the height of the moving contact unit 10b in the first direction will increase accordingly. Therefore, in this embodiment, by configuring the coil assembly 21 to include at least two coil windings 211 arranged along the first direction, more coil windings 211 can be arranged using the space in the first direction, improving the space utilization rate of the coil assembly 21 located in the first direction. With the total number of coil turns remaining unchanged, this design helps to reduce the projected area of ​​the coil assembly 21 on the surface perpendicular to the first direction, thereby achieving miniaturization of the relay.

[0266] Furthermore, the dimension of the coil winding 211 in the second direction is less than or equal to the dimension of the coil winding 211 in the first direction. In this way, the space occupied by the coil winding 211 in the second direction can be reduced, while the space utilization in the first direction can be increased, making the layout of the coil winding 211 and the moving contact unit 10b in the first direction more reasonable, which is conducive to the miniaturization of the relay.

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

[0268] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay characterized by comprising: Includes a contact system, the contact system comprising: The lead-out unit includes a first static lead-out component and a second static lead-out component; A movable touch unit includes a plurality of movable touch components arranged along a first direction, and the movable touch unit is configured to switch between a first switch state and a second switch state. In the first switching state, all of the moving contact components disconnect the electrical path between the first stationary lead-out component and the second stationary lead-out component; in the second switching state, the multiple moving contact components are connected in parallel with each other and all of them conduct the electrical path between the first stationary lead-out component and the second stationary lead-out component, and at least one of the moving contact components has at least two parallel branches arranged 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 and another of the parallel branches are arranged along a second direction, which 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 moving contact unit along a third direction. The moving contact component has an action direction, which is parallel to the second direction. 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, which is perpendicular to the first direction. When each moving contact unit is in the first switch state, it is electrically connected to the adjacent moving contact unit, so that in the two lead-out units corresponding to the two adjacent moving contact units, the first static lead-out component of one lead-out unit is connected in series with the second static lead-out component of the other lead-out unit. When each moving contact unit is in the second switch state, each lead-out unit is disconnected from each other.

6. The relay according to claim 1, characterized in that, The moving contact assembly includes two moving contacts 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 stationary lead-out assembly and the second stationary lead-out assembly. In the second switching state, the two moving contacts of the moving contact assembly are electrically in contact and both constitute the parallel branch to conduct the electrical path between the first stationary lead-out assembly and the second stationary lead-out assembly. 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 moving contact assembly is configured such that, when switching between the first switch state and the second switch state, the two moving contacts of the moving contact assembly move in the same direction.

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

8. The relay according to claim 7, characterized in that, Each of the moving contact components includes two moving contacts arranged along a second direction perpendicular to the first direction. Each moving contact has a fixed end and a swinging end. The fixed end of one moving contact is fixed to the first stationary lead-out component, and the fixed end of the other moving contact is fixed to the second stationary lead-out component. When the two swinging ends of the two moving contacts of the same moving contact component are electrically in contact 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 stationary lead-out component and the second stationary lead-out component. When the two swinging ends are both 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 stationary lead-out component and the second stationary lead-out component.

9. The relay according to claim 8, characterized in that, The fixed end of the moving contact is provided with a stationary contact, and the swing end of the moving contact is provided with a moving contact; in the same moving contact assembly, the stationary contact and the moving contact of one moving contact correspond to the moving contact and the stationary contact of another moving contact, and in the two moving contacts, the two moving contacts can come into contact with or separate from the corresponding stationary contact under the drive of the corresponding swing end.

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

11. The relay according to claim 10, characterized in that, The movable contact is an integral structural component, and the movable contact has a slit, which divides the movable contact into multiple flow-guiding branches; and / or, the number of flow-guiding branches on each movable contact is three.

12. The relay according to claim 8, characterized in that, The relay also includes an electromagnetic system and a driving mechanism. The driving mechanism is connected between the electromagnetic system and the contact system along the second direction. The driving mechanism is used to drive the two moving contact components to move synchronously under the drive 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 windings in the second direction is less than or equal to the size of the coil windings in the first direction.

14. The relay according to claim 12, characterized in that, The pushing mechanism includes a first set of pushing cards and a second set of pushing cards, which are arranged along the first direction. The first set of pushing cards includes two first pushing cards, which are respectively connected to the swing ends of the two moving contacts of one of the moving contact components. The second set of pushing cards includes two second pushing cards, which are respectively connected to the swing 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. The armature assembly includes a first connecting arm and a second connecting arm. The armature assembly is rotatable about a rotation axis parallel to the first direction based on the polarity change of the coil assembly, so that the driving ends of the first connecting arm and the second connecting arm move in opposite directions. The ends of the two first pushers away from one of the moving contact components are respectively connected to the driving ends of the first connecting arm and the second connecting arm. The ends of the two second pushers away from the other moving contact component are respectively connected to the driving ends of the first connecting arm and 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 ends of the first connecting arm and 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; 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 switching state, one of the moving contact components disconnects the electrical path between the first stationary lead and the second stationary lead, and the other moving contact component disconnects the electrical path between the third stationary lead and the fourth stationary lead; in the second switching state, one of the moving contact components connects the electrical path between the first stationary lead and the second stationary lead, and the other moving contact component connects the electrical path between the third stationary lead and the fourth stationary lead.

18. The relay according to claim 17, characterized in that, The relay includes a mounting base, which includes a first mounting cavity and a second mounting cavity arranged along the first direction. The first mounting cavity has a first mounting port, and the second mounting cavity has a second mounting port. The first mounting port and the second mounting port are located at both ends of the mounting base in the first direction. The two moving contact components are a first moving contact component and a second moving contact component, respectively. The first moving contact component can be installed from the first mounting port to the first mounting cavity, and the second moving contact component can be installed from the second mounting port to the second mounting cavity.

19. The relay according to claim 18, characterized in that, The mounting base includes a base body and a first mounting plate, the first mounting plate being 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.

20. The relay according to claim 19, characterized in that, The relay further includes an electromagnetic system and a driving mechanism. The driving mechanism is connected between the electromagnetic system and the contact system along a second direction perpendicular to the first direction. 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 sets of driving cards, which are arranged along the first direction and 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. The armature assembly is used to move based on the polarity change of the coil assembly and drives each of the moving contact assemblies to move synchronously via each of the sets of push cards. The electromagnetic system can be inserted into the base body from one end of the mounting base along the first direction.

22. The relay according to claim 21, characterized in that, The mounting base further includes a second mounting plate, which is connected to the first mounting plate. 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 forms a third mounting opening with a portion of the side wall of the base body. 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. The coil assembly and the armature assembly can both be mounted from the third mounting opening along the first direction to the third mounting cavity.

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

24. The relay according to claim 20, characterized in that, The mounting base has 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 the 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 the end of the mounting base where the second mounting opening is provided. The third direction is perpendicular to the first direction and the second direction. 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 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 of the corresponding mounting base, the groove depths of the first groove and the second groove that connect to the first mounting cavity are both less than or equal to 1 / 3 of the depth of the first mounting cavity, and the groove depths of the third groove and the fourth groove that connect to the second mounting cavity are both 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 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 through the side wall of one side 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 through the side wall of the other side of the mounting base along the third direction, and are connected to each other through the second external lead-out member.

27. The relay according to claim 24, characterized in that, The first stationary lead-out piece, the second stationary lead-out piece, the third stationary lead-out piece, and the fourth stationary lead-out piece all have a bent portion, and a connecting terminal is led out along the second direction to the side where the outer wall of the mounting base is located through their respective bent portions. All the connecting terminals are arranged in the same plane that is parallel to both the first direction and the third direction.

28. The relay according to claim 27, characterized in that, All of the connection terminals are located on the outer side of the outer wall of the mounting base that is closer to the contact system in the second direction; And / or, the mounting base is further provided with shielding walls on the two side walls facing the third direction, and each shielding wall correspondingly shields each of the bends.

29. The relay according to claim 27, 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. When each moving contact unit is in the first switch state, it is electrically connected with the adjacent moving contact unit. This is such 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 lead-out unit are connected in series with the two static lead-out pieces of the second static lead-out component in the other lead-out unit. When each moving contact unit is in the second switch state, each lead-out unit is disconnected from each other. All the connection terminals of the two lead-out units are located on the outer side of the outer wall of the mounting base that is closer to the contact system in the second direction; The connection terminals of the first stationary lead-out piece and the third stationary lead-out piece of one of the lead-out units are arranged along the first direction between the connection terminals of the first stationary lead-out piece and the third stationary lead-out piece of the other lead-out unit, and the connection terminals of the second stationary lead-out piece and the fourth stationary lead-out piece of one of the lead-out units are arranged along the first direction between the connection terminals of the second stationary lead-out piece and the fourth stationary lead-out piece of the other lead-out unit.

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

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

32. The relay according to claim 30, characterized in that, The relay includes a first isolating element, a second isolating element, a third isolating element, and a fourth isolating element; The first isolator is connected to one of the two first static leads and electrically isolates the two first static leads. The second isolator is connected to one of the two second stationary leads and electrically isolates the two second stationary leads; The third isolator is connected to one of the two third static leads and electrically isolates the two third static leads; The fourth isolator is connected to one of the two fourth static leads and electrically isolates the two fourth static leads.

33. The relay according to claim 32, characterized in that, The first isolation member includes a first baffle and a second baffle. The first baffle is located between the outer wall of the mounting base and the connection terminal of one of the first stationary leads. The second baffle is connected to the first baffle and is located between the connection terminals of the two first stationary leads along the first direction.

34. The relay according to claim 33, characterized in that, The first isolation member further includes a third baffle wall, which is connected to the first baffle wall and the second baffle wall on the inner side of the third direction. The first baffle wall, the second baffle wall and the third baffle wall together form a first receiving groove with a first opening, wherein the connecting terminal of the first static lead-out piece is received in the first receiving groove and exposed from the first opening of the first isolation member.

35. The relay according to claim 32, characterized in that, The second isolation member includes a fourth baffle and a fifth baffle. The fourth baffle is located between the outer wall of the mounting base and the connection terminal of one of the second stationary lead-out pieces. The fifth baffle is connected to the fourth baffle and is located between the connection terminals of the two second stationary lead-out pieces along the first direction.

36. The relay according to claim 35, characterized in that, The second isolation member further includes a sixth baffle wall, which is connected to the fourth baffle wall and the fifth baffle wall on the inner side of the third direction. The fourth baffle wall, the fifth baffle wall and the sixth baffle wall together enclose a second receiving groove with a second opening. A connection terminal of the second stationary lead-out piece is received in the second receiving groove and exposed from the second isolation member through the second opening.

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

38. The relay according to claim 32, characterized in that, It also includes two mounting covers; the two mounting covers are respectively fixed to both 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 isolation member, the second isolation member, the third isolation member and the fourth isolation member are all provided with clamping parts. The clamping parts are used to engage with the corresponding bending parts, and the clamping parts are limited and cooperate with the relay housing and / or the corresponding bending parts along the first direction, the second direction and the third direction.

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