CN218788354U - Relay module and relay control system - Google Patents

Abstract

The utility model discloses a relay module and relay control system, the relay module includes the casing, two relay cores, a current transformer, two power wiring ends and two load wiring ends, two relay cores set up in the casing, two power wiring ends and two load wiring end are fixed to be set up on the casing, the relay core includes magnetic circuit part and contact subassembly, two power wiring ends are connected with two load wiring ends through the contact subassembly of two relay cores respectively and are constituted two on-off control route, two on-off control route are used for forming a return circuit with the load that is connected to two load wiring ends, current transformer installs on an on-off control route. The utility model is provided with two relay cores, can realize the simultaneous breaking of the circuits at the two ends of the load loop, has good breaking capacity and high reliability, ensures the safety performance, does not need to distinguish two power supply wiring ends during the use, is simple and convenient to use, and is integrated with a current transformer; the convenience is brought to customers for installation and use, and the automation degree is high.

Description

Relay module and relay control system

Technical Field

The utility model belongs to the technical field of the relay, specifically relate to a relay module and relay control system.

Background

The relay is an electric control device, has an interactive relation between a control system (also called an input loop) and a controlled system (also called an output loop), is an 'automatic switch' which actually uses a small current to control a large current to operate, and plays roles of automatic regulation, safety protection, circuit conversion and the like in the circuit.

The customer only sets up the relay switch in the live wire when the application on electric automobile's the rifle that charges or fill electric pile, and the zero line is not equipped with the relay switch, has because of the switch sticiss even and unable disconnection, leads to the problem that the reliability is low, and the security is lower, and need strictly assemble according to the zero live wire, if the zero live wire dress is anti-normal, the live wire is direct, has the risk of electrocuteeing. In addition, need the electric quantity to detect the function, still need install current transformer, among the prior art, relay and current transformer are independent different components and parts respectively, then link to each other through PCB board or wire, and the structure is complicated, and the integrated level is low, is unfavorable for realizing the miniaturization, inconvenient customer installation, shortcoming such as inconvenient automation.

Disclosure of Invention

An object of the utility model is to provide a relay module is used for solving the technical problem that the above-mentioned exists.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a relay module, which comprises a housing, two relay cores, a current transformer, two power terminals and two load wiring ends, two relay cores set up in the casing, two power terminals and two load wiring end are fixed to be set up on the casing, relay core includes magnetic circuit part and contact subassembly, two power terminals are connected with two load wiring ends through the contact subassembly of two relay cores respectively and are constituted two on-off control circuit, two on-off control circuit is used for forming a return circuit with the load that is connected to two load wiring ends, current transformer installs on an on-off control circuit.

Furthermore, the leakage protection circuit also comprises a leakage mutual inductor which is arranged on the two on-off control paths.

Furthermore, current transformer and electric leakage transformer all set up in the casing outside, and the casing has relative first side wall and the second lateral wall that sets up, and two power connection end and two load wiring end stretch out outside the first side wall of casing and the second lateral wall respectively, and electric leakage transformer is fixed to be set up outside first side wall, and two power connection end stretch out after all passing electric leakage transformer's cavity, and/or current transformer is fixed to be set up outside the second lateral wall, stretches out after one of them load wiring end passes current transformer's cavity.

Furthermore, the contact assembly comprises a static spring lead-out piece, a static contact fixed on the static spring lead-out piece, a movable contact spring and a movable contact, wherein one end of the movable contact spring is fixed on the movable spring lead-out piece, the movable contact spring is fixed on the other end of the movable contact spring, the movable contact spring and the static contact spring are combined or separated under the drive of the magnetic circuit part, and the two power supply terminals and the two load terminals are respectively formed by the movable spring lead-out piece of the two contact assemblies and the part of the static spring lead-out piece, which extends out of the shell.

Furthermore, be equipped with first grafting structure between the first side wall of casing and the electric leakage mutual-inductor, the electric leakage mutual-inductor passes through first grafting structure and the fixed setting outside the first side wall of casing of pegging graft, and/or, be equipped with second grafting structure between the second side wall of casing and the current transformer, the current transformer passes through second grafting structure and the fixed setting outside the second side wall of casing of pegging graft.

The first wiring piece is used for being connected with a power line, the two power wiring ends are formed by hard conductors, the two first wiring pieces are respectively and approximately vertically connected with the two power wiring ends and respectively extend towards two different outer sides, the first wiring piece is fixedly riveted with the power wiring ends, a first clamping block extending towards the first wiring piece is arranged at the outer end of each power wiring end, the first wiring piece is provided with a first clamping opening, the first clamping block is clamped in the first clamping opening, and/or the first wiring piece further comprises a second wiring piece connected with the outer end, extending out of the cavity of the current transformer, of the load wiring end, the second wiring piece is used for being connected with a load, the second wiring piece is fixedly riveted with the load wiring end, a second clamping block extending towards the second wiring piece is arranged at the outer end of the load wiring end, the second wiring piece is provided with a second clamping opening, and the second clamping block is clamped in the second clamping opening.

Further, the inner end face of the leakage transformer is arranged at a distance from the first side wall of the shell, and/or the inner end face of the current transformer is arranged at a distance from the second side wall of the shell.

Furthermore, the inner end face of the leakage mutual inductor and the first side wall of the shell are arranged at intervals through a first limiting block, and/or the inner end face of the current mutual inductor and the second side wall of the shell are arranged at intervals through a second limiting block.

Furthermore, two groups of coil leading-out pins are arranged on the shell and are respectively electrically connected with coils of the magnetic circuit parts of the two relay cores, the two relay cores are arranged side by side, and contact assemblies of the two relay cores are arranged oppositely.

Furthermore, two auxiliary contact assemblies are arranged in the shell, the two auxiliary contact assemblies are respectively linked with the magnetic circuit parts of the two relay cores, and the auxiliary contact assemblies are driven to be closed/opened through the magnetic circuit parts of the relay cores.

Furthermore, the auxiliary contact assembly comprises an auxiliary movable spring part and an auxiliary static spring part, the auxiliary movable spring part is provided with a bulge, the bulge is arranged towards the armature, and when the armature is not attracted, the armature props against the bulge to drive the auxiliary movable spring part to be in contact conduction with the auxiliary static spring part; when the armature is attracted, the armature has a clearance with the boss to disconnect the auxiliary movable spring member from the auxiliary stationary spring member.

Furthermore, the convex part is made of an insulating material.

Furthermore, the shell is also provided with two first power output pins which are respectively and electrically connected with two power wiring terminals, and/or the shell is also provided with two second power output pins which are respectively and electrically connected with two load wiring terminals.

The utility model also discloses a relay control system, including foretell relay module and the control unit, the control unit's control output termination relay core's the coil of the magnetic circuit part, the control unit's control input termination auxiliary contact subassembly's output.

The utility model also discloses another kind of relay control system, including foretell relay module, AC/DC converting circuit and the control unit, two power connection end of relay module are the live wire and the zero line of power respectively, two load wiring termination loads, and the first power output foot of two connects AC/DC converting circuit's input, AC/DC converting circuit's output termination the control unit, the magnetic circuit part of the control unit's control output termination relay core.

Furthermore, the first power output pin is formed by leading out a movable spring lead-out piece or a static spring lead-out piece of the contact assembly and extends out of the bottom of the shell.

The utility model has the advantages of:

the utility model discloses a relay module is equipped with two relay cores, can realize that the both ends circuit of load return circuit divides absolutely simultaneously, and the breaking capacity is good, and the reliability is high, guarantees the security performance, and during the use, need not to distinguish two power wiring ends, uses more portably safety, and the integration has current transformer simultaneously, and whole relay module integrated level is high, does benefit to the miniaturization, makes things convenient for the customer to install and use, and degree of automation is high.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a structural diagram of a relay module according to an embodiment of the present invention;

fig. 2 is a block diagram of another perspective of a relay module according to an embodiment of the present invention;

fig. 3 is a block diagram of another perspective of a relay module according to an embodiment of the present invention;

fig. 4 is a block diagram of another perspective of a relay module according to an embodiment of the present invention;

fig. 5 is a partially exploded view of a relay module according to an embodiment of the invention;

fig. 6 is a partially exploded view from another perspective of a relay module in accordance with an embodiment of the present invention;

fig. 7 is a structural view of a relay module according to an embodiment of the present invention, in which an upper case is omitted;

fig. 8 is a partially exploded view of a relay module according to an embodiment of the present invention, with an upper housing omitted;

fig. 9 is a structural view of the relay module according to the embodiment of the present invention, in which the upper case, the current transformer, and the leakage transformer are omitted;

fig. 10 is an exploded view of an auxiliary contact assembly of a relay module in accordance with an embodiment of the present invention;

fig. 11 is another exploded perspective view of the auxiliary contact assembly of the relay module in accordance with an embodiment of the present invention;

fig. 12 is another exploded view of the auxiliary contact assembly of the relay module in accordance with an embodiment of the present invention;

FIG. 13 isbase:Sub>A sectional view taken along line A-A of FIG. 9;

fig. 14 is a circuit diagram of a relay control system according to an embodiment of the present invention.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1-13, a relay module includes a housing 1, two relay cores 2, a current transformer 3, a leakage transformer 4, two power terminals 5 and two load terminals 6, where the two relay cores 2 are disposed in the housing 1, and the two power terminals 5 and the two load terminals 6 are both led out of the housing 1, so as to facilitate power line connection and load connection, and of course, in some embodiments, the two power terminals 5 and the two load terminals 6 may also be embedded in the housing 1, and then wiring holes are reserved for wiring.

The two power terminals 5 are used for connecting the live wire and the zero wire of the alternating current power supply, and the two load terminals 6 are used for connecting the live wire end and the zero wire end of the load power supply end, however, in some embodiments, the two power terminals 5 can also be used for connecting the positive output end and the negative output end of the direct current power supply, but the leakage transformer 4 will not work.

In this embodiment, the housing 1 includes an upper housing 11 and a base 12, the upper housing 11 covers the base 12, and the two relay cores 2 are both installed on the base 12 and covered by the upper housing 11, so that the assembly and maintenance of the product are facilitated by adopting the structure of the housing 1. The upper shell 11 and the base 12 can be fixedly connected by clamping, welding, bonding, screw locking and other fixing methods.

The upper housing 11 and the base 12 are made of plastic, and may be formed by injection molding, which is easy to process, low in cost, and has good insulating property and light weight, but not limited thereto, and in some embodiments, the upper housing 11 and the base 12 may also be made of other insulating materials, such as ceramic.

Preferably, the housing 1 is a substantially rectangular parallelepiped structure, and the thickness direction of the housing 1 is along the up-down direction, so that the overall structure is more compact, which is beneficial to miniaturization.

The outer side surface of the upper shell 11 is further provided with a mounting hole 111, which is convenient for mounting and fixing the relay module. Specifically, the number of the mounting holes 111 is two, the two mounting holes are respectively arranged on two opposite outer side surfaces of the upper housing 11 parallel to the length direction of the upper housing, and the two mounting holes are arranged diagonally, so that the relay module is more stable after being mounted, of course, in some embodiments, the number of the mounting holes 111 may be 1, 3 or more than 3, and the mounting holes 111 may also be arranged on the outer side wall of the base 12.

The relay core 2 comprises a magnetic circuit part 21 and a contact assembly 22, two power terminals 5 are connected with two load terminals 6 through the contact assembly 22 of the relay core 2 to form a two-way break control circuit respectively, the two-way break control circuit is used for forming a circuit with a load connected to the two load terminals 6, and therefore circuits (such as a live wire and a zero wire during alternating current power supply) at two ends of the load circuit can be broken simultaneously, the breaking capacity is good, even if one contact is adhered, the circuit can be reliably broken, the reliability is high, the safety performance is guaranteed, in addition, the two power terminals do not need to be distinguished during use, no matter whether the two power terminals are in positive connection or reverse connection, the contact assembly 22 is arranged on the live wire and the zero wire simultaneously for conducting on-off control, and the use is simpler and more convenient. In addition, by providing two relay cores 2, two contact assemblies 22 are driven respectively by two magnetic circuit portions 21, and compared with a double-pole double-throw structure that two contact assemblies are driven simultaneously by one magnetic circuit portion, the shock resistance is better because the double-pole double-throw structure that two contact assemblies are driven simultaneously by one magnetic circuit portion needs a push card, and the push card is clamped on a movable spring, and the shock resistance is poor when the double-pole double-throw structure is applied to a mobile environment, such as a charging gun of an electric vehicle.

The current transformer 3 is installed on an on-off control path and used for realizing functions such as current detection and electric quantity detection, in the specific embodiment, the current transformer 3 is a current transformer for measurement and used for electric quantity detection, and certainly, in some embodiments, the current transformer 3 can also be a current transformer for protection and used for overload protection, short-circuit protection and the like.

Specifically, in this embodiment, the current transformer 3 is a through current transformer, which is sleeved on an on-off control path, and has a simple structure, and is easy to assemble, but not limited thereto, and in some embodiments, the current transformer 3 may also be implemented by current transformers of other existing structures, such as an open-close current transformer, a wiring current transformer, and the like.

And the leakage transformer 4 is arranged on the two on-off control paths and used for realizing the leakage detection function. Specifically, in this embodiment, the leakage transformer 4 is a feedthrough leakage transformer, which is sleeved on the two on-off control paths, and has a simple structure and is easy to assemble, but not limited thereto, and in some embodiments, the leakage transformer 4 may also be implemented by a wire connection leakage transformer.

Through being integrated into a relay module with current transformer 3, electric leakage transformer 4 and two relay cores 2, the integrated level is high, makes things convenient for the customer to install and use, and degree of automation is high.

Preferably, in this embodiment, current transformer 3 and leakage transformer 4 all set up in the casing 1 outside, not only make casing 1's volume can do littleer, are favorable to the miniaturization of relay module, are favorable to the heat dissipation, and are convenient for dismouting current transformer 3 and leakage transformer 4 as required. Of course, in some embodiments, the current transformer 3 and the leakage transformer 4 may also be arranged inside the housing 1.

In this embodiment, two power connection terminals 5 all stretch out after passing through the cavity of electric leakage mutual-inductor 4, and electric leakage mutual-inductor 4 cover is established outside two power connection terminals 5 promptly, and the electric leakage detects more comprehensively, not only can detect load circuit's electric leakage condition, also can detect the electric leakage condition of other power supply circuit that are drawn forth by the relay module simultaneously. Of course, in some embodiments, the leakage transformer 4 may also be sleeved outside the two load terminals 6 to detect only the leakage condition of the load circuit.

One of them load wiring end 6 stretches out after passing current transformer 3's cavity, and current transformer 3 cover is established outside a load wiring end 6 promptly, and another load wiring end 6 is located current transformer 3's lateral surface, and current transformer 3 is used for detecting load circuit's electric quantity, if the load is the battery, can detect the electric quantity that charges to carry out corresponding charge. Of course, in some embodiments, the current transformer 3 may also be sleeved outside a power terminal 5 for detecting the total amount of electricity passing through the relay module. Install current transformer 3 and electric leakage transformer 4 respectively on power terminal 5 and load wiring end 6, the structure is simpler, easily the assembly, and can make current transformer 3 and electric leakage transformer 4 part, improves heat dispersion and reliability.

The pins of the current transformer 3 and the leakage transformer 4 are all arranged downwards and are perpendicular to the load wiring end 6 and the power supply wiring end 5, so that an air gap can be guaranteed, the structure is more compact, and the wiring use is easy.

Preferably, in this embodiment, the two power supply terminals 5 and the two load terminals 6 are both formed by hard conductors, and it is not necessary to use a soft wiring to pass through the cavity of the leakage transformer 4 and the cavity of the current transformer 3, which is convenient for customers to install and automation.

Specifically, in this embodiment, the two power terminals 5 and the two load terminals 6 are both formed by copper bars, so that the conductive performance is good, the manufacture is easy, and the cost is low.

The relay module further comprises two first wiring pieces 51 which are respectively used for being connected with the outer end parts of the two power supply terminals 5, extending out of the cavity of the leakage transformer 4, and the first wiring pieces 51 are used for being connected with a power supply line. Specifically, the first wire connecting member 51 is provided with a wire connecting hole 511 for facilitating the connection of a power wire. Because two power terminals 5 need to pass through the cavity of the leakage transformer 4, the size of the cross section of the two power terminals 5 is generally smaller, so that the power line is not convenient to connect, therefore, through the arrangement of the first wiring piece 51, during assembly, the leakage transformer 4 is sleeved on the two power terminals 5, and then the first wiring piece 51 is fixed on the outer end part of the power terminal 5, so that the size of the first wiring piece 51 can be made larger, the power line is convenient to connect, and the two power terminals 5 can not be influenced to pass through the cavity of the leakage transformer 4.

Preferably, the two first wiring pieces 51 are respectively and approximately vertically connected with the two power supply terminals 5 and respectively extend towards two different outer sides, so that the distance between the two wiring holes 511 is increased, a sufficient space is extended for the wiring of the two power supply lines, the wiring is convenient, and the problem that the two power supply terminals 5 need to be close to each other to penetrate through the cavity of the leakage mutual inductor 4, and the wiring is inconvenient is solved.

The first wiring piece 51 is riveted and fixed with the outer end part of the power supply terminal 5, so that the assembly is simple and the automation is convenient. Of course, in some embodiments, the first wire member 51 may be fixed to the outer end of the power terminal 5 by welding, screwing, or other fixing means. Specifically, in the present embodiment, the first wire connecting member 51 is in an L-shaped structure, and includes a first wire connecting portion 512 and a first mounting portion 513, the wire connecting hole 511 is disposed on the first wire connecting portion 512, the first wire connecting portion 512 is substantially perpendicular to the power terminal 5 and extends outward, and the first mounting portion 513 is riveted to an outer end portion of the power terminal 5, but not limited thereto.

Further, power connection terminal 5's outer tip is equipped with the first fixture block 52 that extends towards first installation department 513, first installation department 513 is equipped with first bayonet socket 5131, first fixture block 52 card is established in first bayonet socket 5131 for first wiring piece 51 is connected more stably with power connection terminal 5, avoid because first wiring piece 51 is used for the wiring and the atress is more, lead to easy not hard up or the problem of throw-off, also can play the prepositioning effect when the riveting simultaneously, be convenient for rivet.

Preferably, in this embodiment, the number of the first latch 52 is two, two first latch 52 are respectively disposed on two adjacent sides of the power terminal 5, and correspondingly, the number of the first bayonet 5131 is also two, and two first bayonet 5131 are disposed on two adjacent sides of the first mounting portion 513, so that the space between the first wire connecting member 51 and the power terminal 5 is more stable, but not limited thereto, in some embodiments, the number of the first latch 52 and the first bayonet 5131 may also be 1, more than 2, and the positions of the first latch 52 and the first bayonet 5131 may also be selected according to actual situations.

A second terminal piece 61 is also connected to the outer end of the load terminal 6 that protrudes out of the cavity of the current transformer 3, the second terminal piece 61 being intended to be connected to a load. Specifically, the second wire member 61 is provided with a wire hole 611 for facilitating the connection of a load. Because the load terminal 6 needs to penetrate through the cavity of the current transformer 3, the size of the cross section of the load terminal 6 is generally smaller, so that the wiring is inconvenient, and therefore, by arranging the second wiring piece 61, during assembly, the current transformer 3 is firstly sleeved on the load terminal 6, and then the second wiring piece 61 is fixed on the outer end part of the load terminal 6, so that the size of the second wiring piece 61 can be made larger, the load can be connected conveniently, and the load terminal 6 cannot be influenced to penetrate through the cavity of the current transformer 3.

The second wiring piece 61 is riveted and fixed with the outer end part of the load wiring terminal 6, so that the assembly is simple and the automation is convenient. Of course, in some embodiments, the second wire member 61 may be fixed to the outer end of the load terminal 6 by welding, screwing, or other fixing means. Specifically, in the present embodiment, the second wire connecting member 61 is in an L-shaped structure, and includes a second wire connecting portion 612 and a second mounting portion 613, the wire connecting hole 611 is disposed on the second wire connecting portion 612, the second wire connecting portion 612 is substantially perpendicular to the load terminal 6 and extends outward, and the second mounting portion 613 is riveted to the outer end portion of the load terminal 6, but not limited thereto.

Further, the outer end of this load wiring end 6 is equipped with the second fixture block 62 that extends towards second installation department 613, second installation department 613 is equipped with second bayonet socket 6131, second fixture block 62 card is established in second bayonet socket 6131 for second wiring piece 61 is connected more stably with this load wiring end 6, avoid because second wiring piece 61 is used for the wiring and the atress is more, lead to the easy not hard up or the problem of throw off, also can play the prepositioning effect when riveting simultaneously, be convenient for rivet.

Preferably, in this embodiment, the number of the second blocks 62 is two, two second blocks 62 are respectively disposed on two adjacent sides of the load terminal 6, correspondingly, the number of the second bayonets 6131 is also two, and two second bayonets 6131 are disposed on two adjacent sides of the second mounting portion 613, so that the space between the second wire connecting member 61 and the load terminal 6 is more stable, but not limited thereto, in some embodiments, the number of the second blocks 62 and the number of the second bayonets 6131 may also be 1, more than 2, and the positions of the second blocks 62 and the second bayonets 6131 may also be selected according to actual situations.

Since the other load terminal 6 does not need to pass through the cavity of the current transformer 3, there is no problem that the second wiring piece 61 is large in size and cannot pass through the cavity of the current transformer 3, and therefore, the second wiring piece 61 is integrally formed at the outer end portion of the other load terminal 6, so that the number of parts is reduced, and the assembly is facilitated.

Preferably, the wiring holes 511 and 611 are bolt holes for facilitating wiring by bolt locking, but not limited thereto.

Preferably, two power terminals 5 and two load terminals 6 are respectively led out to the outside of the first side wall and the outside of the second side wall of the casing 1, and the leakage transformer 4 and the current transformer 3 are respectively arranged on the outside of the first side wall and the second side wall of the casing 1, so that the whole structure is more compact and reasonable, the miniaturization is facilitated, the assembly is more convenient, the use is more convenient, and the heat dissipation performance and the reliability of the leakage transformer 4 and the current transformer 3 are improved. However, the present invention is not limited thereto, and in some embodiments, the two power terminals 5 and the two load terminals 6 may also be disposed at other positions of the housing 1, such as outside the adjacent sidewalls of the housing 1, and the like, which may be selected according to actual use situations.

Be equipped with first grafting structure between the first lateral wall of casing 1 and electric leakage mutual-inductor 4, electric leakage mutual-inductor 4 is through first grafting structure and the fixed setting of pegging graft outside the first lateral wall of casing 1, the dismouting of electric leakage mutual-inductor 4 of being convenient for. Specifically, a first elongated mounting component 1-1 extending outward is arranged outside a first side wall of the base 12, the two first mounting components 1-1 are arranged side by side at intervals, elongated bosses 1-11 extending along the length direction of opposite inner side surfaces of the two first mounting components 1-1 are respectively arranged on opposite outer side surfaces of the leakage transformer 4, first slots 41 are respectively arranged on the two elongated bosses 1-11, and the two elongated bosses 1-11 are respectively inserted and clamped in the two first slots 41, so that the leakage transformer 4 is fixed between the two first mounting components 1-1 and is fixedly mounted outside the first side wall of the housing 1. Or the leakage transformer 4 may also adopt other existing fixing structures, such as snap-in, clamping, bonding, screw locking, etc. to be fixedly installed outside the first side wall of the casing 1.

Furthermore, the end part of the inner side surface of the two first mounting parts 1-1, which is connected with the first side wall of the shell 1, is provided with a first limiting block 1-12, and the inner end surface of the leakage transformer 4 is abutted against the first limiting block 1-12 and is arranged at an interval with the first side wall of the shell 1, so that the heat dissipation effect between the leakage transformer 4 and the shell 1 is improved.

Be equipped with second grafting structure between the second lateral wall of casing 1 and current transformer 3, current transformer 3 passes through second grafting structure and the fixed setting of pegging graft outside the second lateral wall of casing 1, the dismouting of the current transformer 3 of being convenient for. Specifically, two elongated second mounting components 1-2 extending outward are arranged outside a second side wall of the base 12, the second mounting components 1-2 are arranged side by side at intervals, elongated bosses 1-21 extending along the length direction of the opposite inner side faces of the second mounting components 1-2 are respectively arranged on the opposite outer side faces of the current transformer 3, and second clamping grooves 31 are respectively arranged on the opposite inner side faces of the second mounting components 1-2, and the two elongated bosses 1-21 are respectively inserted and clamped in the second clamping grooves 31 to fix the current transformer 3 between the second mounting components 1-2, so that the current transformer is fixedly mounted outside the second side wall of the shell 1. Of course, in some embodiments, the second plug structure may also be implemented by other plug structures, for example, the second side wall of the casing 1 is provided with a plug column, the current transformer 3 is provided with a jack, and the plug column is inserted into the jack in an interference manner to form the plug structure. Or the current transformer 3 may also adopt other existing fixing structures, such as a snap-fit connection, an adhesive connection, a screw locking connection, etc., and is fixedly installed outside the second side wall of the casing 1.

Furthermore, second limiting blocks 1-22 are arranged on the end portions, connected with the second side wall of the shell 1, of the inner side faces of the second mounting parts 1-2, and the inner end faces of the current transformers 3 abut against the second limiting blocks 1-22 and are arranged at intervals with the second side wall of the shell 1, so that the heat dissipation effect between the current transformers 3 and the shell 1 is improved.

In this embodiment, the magnetic circuit portion 21 includes a coil 211, a coil bobbin 212, a yoke 213, an armature 214, and a push-on card 215, the contact assembly 22 is a normally open contact assembly including a stationary spring terminal 221, a stationary contact 222 fixed to the stationary spring terminal 221, a movable spring terminal 223, a movable spring 224, and a movable contact 225, one end of the movable spring 224 is fixed to the movable spring terminal 223, and the movable contact 225 is fixed to the other end of the movable spring 224. The coil 211 is arranged on the coil frame 212, the yoke 213 is positioned outside the periphery of the coil 211, the pushing card 215 is fixed on the armature 214, when the coil 211 is excited, the coil 211 adsorbs the armature 214 to enable the armature 214 to rotate, so that the pushing card 215 is driven to push the movable contact 225 on the movable reed 224 to move towards the fixed contact 222, the movable contact 225 is in contact with and electrically connected with the fixed contact 222 to enable the contact assembly 22 to be conducted, the coil 211 is formed by winding copper enameled wires, the conducting performance is good, and the cost is low; the bobbin 212 is made of plastic material, and is light in weight and low in cost, but not limited thereto. Of course, in other embodiments, the contact assembly 22 may also be a normally closed contact assembly.

Be equipped with two sets of coil pins 7 on the base 12, two sets of coil pins 7 are connected with two coil 211 electricity respectively, and the lower extreme of coil pin 7 is worn out the bottom of base 12 and is convenient for the wiring, and coil pin 7 adopts the copper product material to make, and electric conductive property is good, and is with low costs.

In this embodiment, two relay cores 2 are arranged side by side, the contact assemblies 22 of two relay cores 2 are arranged side by side in opposite directions, and two magnetic circuit portions 21 are respectively arranged outside two sides of the two contact assemblies 22, so that two power terminals 5 and two load terminals 6 can be led out to pass through the cavities of the current transformer 3 and the leakage transformer 4.

The axial direction of the coil 211 of the magnetic circuit portion 21 is perpendicular to the first and second side walls of the case 1, so that the entire structure is more compact.

Further, two relay cores 2 are rotational symmetry and set up, specifically are two relay cores 2 and are 180 degrees rotational symmetry for two contact assemblies 22's movable contact spring 224 staggers each other, and two relay cores 2 can arrange and more closely, do benefit to the miniaturization, and two relay cores 2's structure can be the same, the production of being convenient for, the assembly.

Preferably, in this embodiment, the two power terminals 5 are respectively formed by the stationary spring tab 221 of one contact assembly 22 and the portion of the movable spring tab 223 of the other contact assembly 22 protruding out of the first side wall of the housing 1, and the two load terminals 6 are respectively formed by the stationary spring tab 221 of one contact assembly 22 and the portion of the movable spring tab 223 of the other contact assembly 22 protruding out of the second side wall of the housing 1, that is, the power terminals 5 and the load terminals 6 are integrated with the stationary spring tab 221 or the movable spring tab 223 of the contact assembly 22, so that the number of parts is less, the assembly is easy, and the conductivity is better.

Further, in this embodiment, two auxiliary contact assemblies 8 are further disposed on the base 12, the two auxiliary contact assemblies 8 are configured to be linked with the magnetic circuit portions 21 of the two relay cores 2, and the auxiliary contact assemblies 8 are driven to be turned on/off by the magnetic circuit portions 21 of the relay cores 2, so as to detect states of the two contact assemblies 22.

Specifically, referring again to fig. 10-13, the auxiliary contact assembly 8 includes an auxiliary movable spring member 81 and an auxiliary stationary spring member 82, the auxiliary movable spring member 81 includes an auxiliary movable spring lead 811, an auxiliary movable spring 812 fixed to the auxiliary movable spring lead 811, and an auxiliary movable contact 813 and a protrusion 814 fixed to the auxiliary movable spring 812, more specifically, an upper end of the auxiliary movable spring 812 is fixed to the auxiliary movable spring lead 811, the auxiliary movable contact 813 is disposed at a lower end of the auxiliary movable spring 812, the auxiliary movable contact 813 is offset from a mounting portion of the auxiliary movable spring lead 811, the protrusion 814 is disposed on a side of the auxiliary movable spring 812 facing the armature 214 of the relay movement 2, the auxiliary stationary spring member 82 includes an auxiliary stationary spring lead 821 and an auxiliary stationary contact 822, the base 12 is provided with a first mounting hole 121 and a second mounting hole 122, the auxiliary movable spring lead 811 and the auxiliary movable spring lead 821 are respectively fixedly inserted into the first mounting hole 121 and the second mounting hole 122, and the bottom of the auxiliary movable spring lead 83 is extended out from the base 12, when the auxiliary movable contact lead is in an initial position, i.e., the auxiliary movable contact lead is in contact position, the auxiliary movable contact lead 811 is electrically disconnected from the auxiliary movable contact assembly 214, the auxiliary movable contact is detected, and the auxiliary movable contact is electrically disconnected from the auxiliary movable contact terminal 214, and the auxiliary movable contact is electrically disconnected from the auxiliary movable contact 813, and the auxiliary movable contact assembly 214, and the auxiliary movable contact is detected (when the auxiliary movable contact terminal 822, and the auxiliary movable contact assembly 214 is electrically disconnected from the auxiliary movable contact 812, and the auxiliary movable contact 812 is electrically disconnected from the auxiliary movable contact 812, and the auxiliary movable contact 813, and the auxiliary movable contact assembly 214). The projection 814 makes the pushing of the armature 214 to the auxiliary movable spring 812 smoother and more reliable.

Preferably, the protruding portion 814 is made of an insulating material, such as ceramic, plastic, etc., so as to further improve the insulating performance between the auxiliary contact assembly 8 and the relay core 2, thereby improving the safety. Of course, in some embodiments, the protrusion 814 can be integrally formed with the auxiliary movable spring 812, which is simple in structure and easy to assemble.

Preferably, the auxiliary stationary contact 822 is disposed close to the base 12, so that the structure is more compact and the stability of the auxiliary stationary contact 822 is better.

In this embodiment, the base 12 is further provided with two first power output pins 91, the two first power output pins 91 are electrically connected with the two power terminals 5, more specifically, the two first power output pins 91 are electrically connected with the static spring tab 221 of one contact assembly 22 and the dynamic spring tab 223 of the other contact assembly 22, respectively, the two first power output pins 91 penetrate out of the bottom surface of the base 12, and the two first power output pins 91 are arranged to supply power to the control circuit portion of the relay module or other components, such as a display screen and an alarm.

In this embodiment, the first power output pin 91 and the stationary spring tab 221 or the movable spring tab 223 of the contact assembly 22 are integrally formed, so that the number of parts is small and the assembly is convenient.

Further, the base 12 is further provided with two second power output pins 92, the two second power output pins 92 are electrically connected with the two load terminals 6, more specifically, the two second power output pins 92 are electrically connected with the movable spring tab 223 of one contact assembly 22 and the static spring tab 221 of the other contact assembly 22, respectively, the two second power output pins 92 penetrate out of the bottom surface of the base 12, and the two second power output pins 92 are arranged to supply power to other components, such as a display screen, an alarm and the like, and the power supply can be synchronously controlled by the relay module, so that the use is simple and energy-saving.

In this embodiment, the second power output pin 92 and the stationary spring tab 221 or the movable spring tab 223 of the contact assembly 22 are integrally formed, so that the number of parts is small and the assembly is convenient.

Fig. 14 discloses a relay control system, which includes the above-mentioned relay module, AC/DC conversion circuit 100 and control unit 200, when in use, two power terminals 5 of the relay module are respectively connected to the live wire and the neutral wire of the AC power, two load terminals 6 are connected to load 300, the load 300 can be a battery or other electronic devices, such as a motor, etc., two first power output pins 91 are connected to the input end of the AC/DC conversion circuit 100, the output end of the AC/DC conversion circuit 100 is connected to the control unit 200, and the control output end of the control unit 200 is connected to the magnetic circuit part of the relay core 2, specifically, to the terminal ring leading pin 7. An alternating current power supply is output to the AC/DC conversion circuit 100 through the first power output pin 91, rectified and reduced in voltage and converted into low-voltage direct current to supply power to the control unit 200, when the control unit 200 receives a conduction signal, current is output to the coil 211, the coil 211 is excited to adsorb the armature 214 to move the armature 214, the pushing card 215 is driven to push the movable contact 225 on the movable spring 224 to move towards the fixed contact 222, the movable contact 225 is electrically connected with the fixed contact 222 in a contact mode to enable the contact assembly 22 to be conducted, and the alternating current power supply supplies power to the load 300 through the two contact assemblies 22 to form a power supply loop. The current transformer 3 detects the current of the load loop and outputs the current to the control unit 200 for electric quantity detection or outputs the current to other electric quantity detection units for electric quantity detection, the leakage transformer 4 detects the electric leakage condition of the loop and outputs a detection signal to the control unit 200, when electric leakage occurs, the control unit 200 stops supplying power to the coil 211, the two contact assemblies 22 are disconnected, and therefore the live wire and the zero wire of the loop are disconnected simultaneously, the breaking capacity is good, the reliability is high, and the safety performance is guaranteed. The auxiliary contact leading pin 83 is connected to the control unit 200, and the control unit 200 can know the state of the contact assembly 22 by detecting the on/off state of the auxiliary contact assembly 8, thereby determining whether the contact assembly 22 has a fault. Of course, the auxiliary contact pin 83 may also be connected to other detection units, such as a back-office system, for monitoring the state of the contact assembly 22.

The control unit 200 is implemented by a single chip, and has a simple structure, a small volume, an easy implementation and a low cost, and of course, in some embodiments, the control unit 200 may also be implemented by other existing controllers.

Of course, in some embodiments, the relay module may not be equipped with a leakage transformer if there is no leakage detection requirement.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (16)

1. A relay module, characterized by: the relay comprises a shell, two relay cores, a current transformer, two power supply terminals and two load terminals, wherein the two relay cores are arranged in the shell, the two power supply terminals and the two load terminals are fixedly arranged on the shell, the relay core comprises a magnetic circuit part and a contact assembly, the two power supply terminals are respectively connected with the two load terminals through the contact assembly of the two relay cores to form a two-way on-off control circuit, the two-way on-off control circuit is used for forming a loop with a load connected to the two load terminals, and the current transformer is arranged on the one-way on-off control circuit.

2. The relay module of claim 1, wherein: the leakage current transformer is arranged on the two on-off control paths.

3. The relay module of claim 2, wherein: the current transformer and the leakage transformer are both arranged outside the shell, the shell is provided with a first side wall and a second side wall which are arranged oppositely, two power supply wiring ends and two load wiring ends respectively extend out of the first side wall and the second side wall of the shell, the leakage transformer is fixedly arranged outside the first side wall, the two power supply wiring ends extend out after penetrating through a cavity of the leakage transformer, and/or the current transformer is fixedly arranged outside the second side wall, and one of the load wiring ends extends out after penetrating through the cavity of the current transformer.

4. The relay module of claim 3, wherein: the contact assembly comprises a static spring lead-out piece, a static contact fixed on the static spring lead-out piece, a movable contact spring and a movable contact, wherein one end of the movable contact spring is fixed on the movable spring lead-out piece, the movable contact is fixed on the other end of the movable contact spring, the movable contact and the static contact are combined or separated under the drive of the magnetic circuit part, and the two power supply wiring ends and the two load wiring ends are respectively formed by the movable spring lead-out piece of the two contact assemblies and the part of the static spring lead-out piece, which extends out of the shell.

5. The relay module of claim 3, wherein: be equipped with first grafting structure between the first lateral wall of casing and the electric leakage mutual-inductor, the electric leakage mutual-inductor passes through first grafting structure and the grafting is fixed to be set up outside the first lateral wall of casing, and/or, be equipped with second grafting structure between the second lateral wall of casing and the current transformer, the current transformer passes through second grafting structure and the grafting is fixed to be set up outside the second lateral wall of casing.

6. The relay module of claim 3, wherein: the first wiring piece is used for being connected with a power line, the two power wiring ends are all formed by hard conductors, the two first wiring pieces are respectively and approximately vertically connected with the two power wiring ends and extend towards two different outer sides respectively, the first wiring piece is fixedly riveted with the power wiring ends, the outer end portions of the power wiring ends are provided with first clamping blocks extending towards the first wiring piece, the first wiring piece is provided with first clamping ports, the first clamping blocks are clamped in the first clamping ports, and/or the first wiring piece further comprises a second wiring piece, the second wiring piece is used for being connected with the outer end portions, extending out of the cavity of the current transformer, of the load wiring ends, the second wiring piece is used for being connected with a load, the second wiring piece is fixedly riveted with the load wiring ends, the outer end portions of the load wiring ends are provided with second clamping blocks extending towards the second wiring piece, the second wiring piece is provided with second clamping ports, and the second clamping blocks are clamped in the second clamping ports.

7. The relay module of claim 3, wherein: the inner end face of the leakage transformer is arranged at intervals with the first side wall of the shell, and/or the inner end face of the current transformer is arranged at intervals with the second side wall of the shell.

8. The relay module according to claim 7, wherein: the inner end face of the leakage mutual inductor and the first side wall of the shell are arranged at intervals through a first limiting block, and/or the inner end face of the current mutual inductor and the second side wall of the shell are arranged at intervals through a second limiting block.

9. The relay module of claim 1, wherein: the shell is provided with two groups of coil leading-out pins which are respectively electrically connected with coils of magnetic circuit parts of the two relay cores, the two relay cores are arranged side by side, and contact assemblies of the two relay cores are arranged oppositely.

10. The relay module according to claim 1 or 2, wherein: and two auxiliary contact assemblies are arranged in the shell and are respectively linked with the magnetic circuit parts of the two relay cores, and the auxiliary contact assemblies are driven to be closed/opened through the magnetic circuit parts of the relay cores.

11. The relay module according to claim 10, wherein: the auxiliary contact assembly comprises an auxiliary movable spring part and an auxiliary static spring part, the auxiliary movable spring part is provided with a bulge, the bulge faces the direction of the armature, and when the armature is not attracted, the armature props against the bulge to drive the auxiliary movable spring part to be in contact conduction with the auxiliary static spring part; when the armature is attracted, the armature has a clearance with the boss to disconnect the auxiliary movable spring member from the auxiliary stationary spring member.

12. The relay module of claim 11, wherein: the protruding part is made of an insulating material.

13. The relay module according to claim 1 or 2, wherein: the shell is also provided with two first power output pins which are respectively and electrically connected with two power wiring terminals, and/or the shell is also provided with two second power output pins which are respectively and electrically connected with two load wiring terminals.

14. A relay control system, characterized by: comprising a relay module according to claim 10 and a control unit, the control output of which is connected to the coil of the magnetic circuit part of the relay movement and the control input of which is connected to the output of the auxiliary contact assembly.

15. A relay control system, characterized by: the relay module of claim 13, comprising two power terminals connected to the live and neutral wires of the power supply, two load terminals connected to the load, two first power output pins connected to the input of the AC/DC converter circuit, an output of the AC/DC converter circuit connected to the control unit, and a control output of the control unit connected to the magnetic circuit portion of the relay core.

16. The relay control system of claim 15, wherein: the first power output pin is formed by leading out a movable spring lead-out sheet or a static spring lead-out sheet of the contact assembly and extends out of the bottom of the shell.

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