WO2024088054A1

WO2024088054A1 - Relay, control device and control circuit module

Info

Publication number: WO2024088054A1
Application number: PCT/CN2023/123612
Authority: WO
Inventors: 洪尧生; 陈金品; 代文广; 陈松生
Original assignee: 厦门宏发电力电器有限公司
Priority date: 2022-10-27
Filing date: 2023-10-09
Publication date: 2024-05-02

Abstract

A relay, a control device and a control circuit module. The relay comprises a coil (11) and an anti-interference element (42). The anti-interference element (42) is connected to the coil (11), and when the coil (11) is used for electrical connection to an external control circuit (41), the coil (11) and the anti-interference element (42) are connected in series in the external control circuit (41). When the relay works, the anti-interference element (42) and the coil (11) are connected in series in the external control circuit (41), so that interference signals inputted from a load end and transmitted to the coil (11) can be significantly reduced and screened, thus ensuring the normal work of the relay.

Description

Relays, control devices and control circuit modules

cross reference

The present disclosure claims the priority of Chinese patent applications with application numbers 202211326647.4, 202211329263.8 and 202222842938.0 filed on October 27, 2022, and named “Relay, control device and control circuit module” respectively, and the entire contents of these Chinese patent applications are incorporated herein by reference in their entirety.

Technical Field

The present disclosure relates to the technical field of relays, and in particular to a high-voltage direct current relay, a control device, and a control circuit module.

Background technique

A relay is an electronic control device and a switch that controls a load circuit. In related technologies, when signals of different frequencies are input to the high-voltage load end, the signals will be coupled along the magnetic conductive parts of the relay and the air medium to the low-voltage coil end of the relay, generating electromagnetic interference to the coil end. Moreover, with the development of technology, the frequency of signals input into the load circuit (such as current frequency) is also increasing. When the signals of different frequencies input to the high-voltage load end are coupled along the magnetic conductive parts of the relay and the air medium to the coil end, the signal is too strong, which may affect the operation of other control components in the coil loop, causing malfunctions and signal interference, etc., increasing the interference to the coil end.

Summary of the invention

The embodiments of the present disclosure provide a relay, a control device and a control circuit module, which can reduce and shield interference signals input from a load end and transmitted to a control circuit of the relay, thereby ensuring the normal operation of the relay.

According to one aspect of the present disclosure, there is provided a relay, comprising a coil and an anti-interference element. The coil is used to be electrically connected to an external control circuit, the anti-interference element is connected to the coil, and when the coil is used to be electrically connected to the external control circuit, the coil and the anti-interference element are connected in series in the external control circuit.

According to some embodiments of the present disclosure, the anti-interference element is at least one of a magnetic bead and an inductor.

According to some embodiments of the present disclosure, the relay also includes: a coil frame, on which the coil is wound; a first connector, which is conductive and is provided on the coil frame, the first connector having a first end and a second end, the first end being used to be connected to one pole of a power supply of the external control circuit, and the second end being connected to one end of the anti-interference element; a second connector, which is conductive and is provided on the coil frame, the second connector having a third end and a fourth end, the third end being connected to the other end of the anti-interference element, and the fourth end being connected to one end of the coil; wherein the other end of the coil is used to be connected to the other pole of the power supply of the external control circuit, so that the coil and the anti-interference element form a loop when electrically connected to the external control circuit.

According to some embodiments of the present disclosure, the relay also includes: a third connecting member, which is conductive and is arranged on the coil frame, the third connecting member has a fifth end and a sixth end, the fifth end is connected to the other end of the coil, and the sixth end is used to connect to the other pole of the power supply of the external control circuit.

According to some embodiments of the present disclosure, the coil frame includes a winding portion, a first flange portion and a second flange portion, wherein the first flange portion and the second flange portion are located on both sides of the winding portion and protrude outward; the first connecting member has a first lead pin and a conductive column, The conductive column is vertically connected to one end of the first lead-out pin, a portion of the first connector is embedded in the first flange portion, the first lead-out pin extends in a vertical direction and extends from the bottom of the first flange portion, and the conductive column extends in a first horizontal direction and extends from a side surface of the first flange portion; the portion of the first lead-out pin extending from the first flange portion is the first end of the first connector, and the portion of the conductive column extending from the first flange portion is the second end of the first connector.

According to some embodiments of the present disclosure, the second connecting member is U-shaped, having a first connecting portion, a second connecting portion and a third connecting portion connected in sequence, at least the second connecting portion is embedded in the first flange portion of the coil frame, and the first connecting portion and the third connecting portion both extend along the first horizontal direction and extend from the side of the first flange portion; the portion of the first connecting portion extending out of the first flange portion is the third end of the second connecting member, and the portion of the third connecting portion extending out of the first flange portion is the fourth end of the second connecting member.

According to some embodiments of the present disclosure, the first connecting member and the second connecting member are located on the same side of the first flange portion, and the first connecting portion, the third connecting portion and the conductive column are spaced apart in the second horizontal direction.

According to some embodiments of the present disclosure, a groove is provided at the edge of the first flange portion corresponding to the third connection portion, and the third connection portion extends from the groove; the third connection portion has toughness, and when the third connection portion is connected to one end of the coil, the third connection portion is configured to be able to be bent to extend along the vertical direction.

According to some embodiments of the present disclosure, the relay also includes a circuit board, the anti-interference element is arranged on the circuit board, the circuit board has a first through hole and a second through hole, the second end of the first connecting member is passed through the first through hole and extends out of the circuit board, and the third end of the second connecting member is passed through the second through hole and extends out of the circuit board.

According to some embodiments of the present disclosure, the number of the anti-interference elements is one or more.

The embodiment of the present disclosure also provides a control device, comprising a control circuit and a relay. The relay comprises a coil and an anti-interference element; wherein the anti-interference element is connected in series with the coil in the control circuit.

The disclosed embodiment also provides a control circuit module for controlling an electronic device, the control circuit module comprising a control circuit and an anti-interference element. The control circuit is used to be electrically connected to the electronic device; the anti-interference element is electrically connected to the control circuit and is used to be connected in series with the electronic device.

According to some embodiments of the present disclosure, the electronic device is a relay, and the control circuit is used to be electrically connected to a coil of the relay.

It can be seen from the above technical solution that the present disclosure has at least one of the following advantages and positive effects:

In the disclosed embodiment, when the relay is working, the anti-interference element is connected in series with the coil in the external control circuit, which can significantly reduce and shield interference signals of different frequencies input from the load end and transmitted to the coil, thereby ensuring the normal operation of the relay.

According to another aspect of the present disclosure, a relay is provided, comprising a coil, an anti-interference element and a capacitor, wherein the anti-interference element is connected in series with the coil to form a series component for electrically connecting to an external control circuit; the capacitor is connected to the series component, and when the series component is used to electrically connect to the external control circuit, the capacitor is not connected in series with the series component.

According to some embodiments of the present disclosure, one end of the capacitor is connected to the series component, and the other end is grounded.

According to some embodiments of the present disclosure, the capacitor is connected in parallel with at least one of the coil and the anti-interference element.

According to some embodiments of the present disclosure, the relay further includes: a coil frame, on which the coil is wound; a first connector, which is conductive and is disposed on the coil frame, wherein the first connector has a first end and a second end, wherein the first end is used to connect to one pole of a power supply of the external control circuit, and the second end is connected to one end of the anti-interference element; and a second connector, which has a conductive Electrically, it is arranged on the coil frame, and the second connecting member has a third end and a fourth end, the third end is connected to the other end of the anti-interference element, and the fourth end is connected to one end of the coil; wherein, the other end of the coil is used to connect to the other pole of the power supply of the external control circuit, so that the series connection component forms a loop when it is electrically connected to the external control circuit.

According to some embodiments of the present disclosure, the coil frame includes a winding portion, a first flange portion and a second flange portion, the first flange portion and the second flange portion are located on both sides of the winding portion and protrude outward; the first connecting member has a first lead-out pin and a conductive column, the conductive column is vertically connected to one end of the first lead-out pin, a portion of the first connecting member is embedded in the first flange portion, the first lead-out pin extends in a vertical direction and extends from the bottom of the first flange portion, the conductive column extends in a first horizontal direction and extends from the side of the first flange portion; the portion of the first lead-out pin extending from the first flange portion is the first end of the first connecting member, and the portion of the conductive column extending from the first flange portion is the second end of the first connecting member.

According to some embodiments of the present disclosure, the second end of the first connector is also connected to one end of the capacitor, and the other end of the capacitor is grounded.

According to some embodiments of the present disclosure, the relay further includes: a yoke seat, on which the coil frame is placed; and a lead-out piece, one end of which is connected to a side wall of the yoke seat and the other end of which is connected to the other end of the capacitor.

According to some embodiments of the present disclosure, the yoke seat has at least two opposite first side walls and a second side wall, and a bottom wall connected to the first side wall and the second side wall, the first side wall, the second side wall and the bottom wall form a accommodating space, the coil is arranged in the accommodating space and placed on the bottom wall; one end of the lead-out piece is connected to the first side wall of the yoke seat close to the capacitor, and the other end is connected to the other end of the capacitor.

According to some embodiments of the present disclosure, the lead-out member has a first lead-out portion, a second lead-out portion and a third lead-out portion connected in sequence, and the first lead-out portion and the third lead-out portion are located on opposite sides of the second lead-out portion; the first side wall of the yoke seat is provided with a accommodating groove, the first lead-out portion is fixed in the accommodating groove, and the third lead-out portion is connected to the capacitor.

According to some embodiments of the present disclosure, the relay also includes a circuit board, the anti-interference element and the capacitor are arranged on the circuit board, the circuit board has a first through hole, a second through hole and a third through hole, the second end of the first connecting member is passed through the first through hole and extends out of the circuit board, the third end of the second connecting member is passed through the second through hole and extends out of the circuit board, and the third lead-out portion of the lead-out member is passed through the third through hole and extends out of the circuit board.

According to some embodiments of the present disclosure, the number of the anti-interference elements is one or more; the number of the capacitors is one or more.

The disclosed embodiment also provides a control device, including a control circuit and a relay. The relay includes a coil, an anti-interference element and a capacitor; wherein the anti-interference element is connected in series with the coil to form a series component, and the series component is connected to the control circuit; the capacitor is connected to the series component, and the capacitor and the series component are not connected in series in the control circuit.

The disclosed embodiment also provides a control circuit module for controlling an electronic device, the control circuit module comprising: a control circuit for being electrically connected to the electronic device; an anti-interference element electrically connected to the control circuit and connected in series with the electronic device; a capacitor electrically connected to the control circuit, wherein when the control circuit is electrically connected to the electronic device, the capacitor is not connected in series with the electronic device and the anti-interference element.

In the embodiment of the present disclosure, when the relay is working, the anti-interference element is connected in series with the coil to form a series component, which can significantly reduce and shield the higher frequency interference signals in the interference signals input from the load end and transmitted to the coil, and the capacitor is connected to the series component, but not connected in series with the series component, which can significantly reduce and shield the lower frequency interference signals in the interference signals input from the load end and transmitted to the coil, thereby being able to comprehensively shield interference signals of different frequencies to ensure the normal operation of the relay.

According to another aspect of the present disclosure, a relay is provided, comprising a coil and a capacitor, wherein the coil is used to be electrically connected to an external control circuit; the capacitor is connected to the coil, and when the coil is used to be electrically connected to the external control circuit, the capacitor and the coil are not connected in series.

According to some embodiments of the present disclosure, one end of the capacitor is connected to the coil, and the other end is grounded.

According to some embodiments of the present disclosure, the capacitor is connected in parallel with the coil.

According to some embodiments of the present disclosure, the relay also includes: a coil frame, on which the coil is wound; a first connector, which is conductive and is provided on the coil frame, the first connector having a first end and a second end, the first end being used to be connected to one pole of a power supply of the external control circuit, and the second end being connected to one end of the capacitor; a second connector, which is conductive and is provided on the coil frame, the second connector having a third end and a fourth end, the third end being connected to the second end of the first connector, and the fourth end being connected to one end of the coil; wherein the other end of the coil is used to be connected to the other pole of the power supply of the external control circuit, so that the coil forms a loop when electrically connected to the external control circuit.

According to some embodiments of the present disclosure, the yoke seat has at least two opposite first and second side walls, and a bottom wall connected to the first and second side walls, the first side wall, the second side wall and the bottom wall form a accommodating space, the coil is arranged in the accommodating space and placed on the bottom wall; one end of the lead-out piece is connected to the first side wall close to the capacitor.

According to some embodiments of the present disclosure, the lead-out member has a first lead-out portion, a second lead-out portion and a third lead-out portion connected in sequence, and the first lead-out portion and the third lead-out portion are located on opposite sides of the second lead-out portion; the first side wall of the yoke iron seat is provided with a accommodating groove, the first lead-out portion is fixed in the accommodating groove, and the third lead-out portion is connected to the capacitor.

According to some embodiments of the present disclosure, the relay also includes a circuit board, the capacitor is arranged on the circuit board, the circuit board has a first through hole, a second through hole and a third through hole, the second end of the first connecting member is passed through the first through hole and extends out of the circuit board, the third end of the second connecting member is passed through the second through hole and extends out of the circuit board, and the third lead-out portion of the lead-out member is passed through the third through hole and extends out of the circuit board.

According to some embodiments of the present disclosure, the number of the capacitor is one or more.

According to an embodiment of the present disclosure, a control device is also provided, comprising a control circuit and a relay. The relay comprises a coil and a capacitor; wherein the coil is electrically connected to the control circuit, the capacitor is connected to the coil, and the capacitor and the coil are not connected in series in the control circuit.

According to an embodiment of the present disclosure, a control circuit module is also provided for controlling an electronic device, wherein the control circuit module includes a control circuit and a capacitor. The control circuit is used to be electrically connected to the electronic device; the capacitor is electrically connected to the control circuit, and when the control circuit is electrically connected to the electronic device, the capacitor is not connected in series with the electronic device.

In the embodiment of the present disclosure, when the relay is working, the coil is electrically connected to the external control circuit, the capacitor is connected to the coil, and the capacitor and the coil are not connected in series, that is, the capacitor is also electrically connected to the control circuit, thereby being able to significantly reduce and shield interference signals of different frequencies input from the load end and transmitted to the coil, thereby ensuring the normal operation of the relay.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features and advantages of the present disclosure will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

FIG. 1 is a circuit diagram of a relay in a working state according to some embodiments of the present disclosure.

FIG. 2 is a three-dimensional schematic diagram of a relay (housing omitted) shown in some embodiments of the present disclosure.

FIG. 3 is an enlarged view of point C in FIG. 2 .

FIG. 4 is a top view of a relay according to some embodiments of the present disclosure.

Fig. 5 is a cross-sectional view along line A-A in Fig. 4 .

FIG. 6 is a front view of a relay according to some embodiments of the present disclosure.

FIG. 7 is a side schematic diagram of a relay according to some embodiments of the present disclosure.

FIG8 is a schematic structural diagram of a coil frame, a first connecting member, a second connecting member, and a third connecting member according to some embodiments of the present disclosure.

Fig. 9 is a cross-sectional view along the line B-B in Fig. 8 .

FIG. 10 is a schematic structural diagram of a first connecting member according to some embodiments of the present disclosure.

FIG. 11 is a schematic diagram of the structure of a second connecting member according to some embodiments of the present disclosure.

FIG. 12 is a schematic diagram showing an anti-interference element disposed on a circuit board according to some embodiments of the present disclosure.

FIG. 13 is a schematic diagram of a control device according to some embodiments of the present disclosure.

FIG. 14 is a schematic diagram of a control circuit module according to some embodiments of the present disclosure.

FIG. 15 is a circuit diagram of a relay in a working state according to some embodiments of the present disclosure.

FIG. 16 is a three-dimensional schematic diagram of a relay (housing omitted) shown in some embodiments of the present disclosure.

FIG. 17 is an enlarged view of point E in FIG. 16 .

FIG. 18 is a top view of a relay according to some embodiments of the present disclosure.

Fig. 19 is a cross-sectional view along the line D-D in Fig. 18 .

FIG. 20 is a front view of a relay according to some embodiments of the present disclosure.

FIG. 21 is a side schematic diagram of a relay shown in some embodiments of the present disclosure.

FIG. 22 is a schematic diagram of the structure of a lead-out member shown in some embodiments of the present disclosure.

FIG. 23 is a schematic diagram of the structure in which the lead-out piece is arranged on the yoke seat according to some embodiments of the present disclosure.

FIG. 24 is a side schematic diagram showing a lead-out piece disposed on a yoke seat according to some embodiments of the present disclosure.

FIG. 25 is a schematic diagram showing that anti-interference components and capacitors are arranged on a circuit board according to some embodiments of the present disclosure.

FIG. 26 is a schematic diagram of a control device according to some embodiments of the present disclosure.

FIG. 27 is a schematic diagram of a control circuit module according to some embodiments of the present disclosure.

FIG. 28 is a circuit diagram of a relay in a working state according to some embodiments of the present disclosure.

FIG. 29 is a three-dimensional schematic diagram of a relay (housing omitted) shown in some embodiments of the present disclosure.

FIG30 is an enlarged view of point F in FIG29 .

FIG. 31 is a front view of a relay according to some embodiments of the present disclosure.

FIG. 32 is a schematic diagram showing a capacitor disposed on a circuit board according to some embodiments of the present disclosure.

FIG. 33 is a schematic diagram of a control device according to some embodiments of the present disclosure.

FIG. 34 is a schematic diagram of a control circuit module according to some embodiments of the present disclosure.

Description of reference numerals:
1. Magnetic circuit unit; 11. Coil; 12. Coil frame; 121. First flange portion; 1211. Groove; 122. Winding portion; 123.
second flange; 13, push rod assembly; 131, push rod; 132, bearing seat; 133, first spring; 14, static iron core; 15, moving iron core; 16, second spring; 2, contact unit; 21, static contact lead-out terminal; 22, moving spring sheet; 23, insulating cover; 24, frame sheet; 25, yoke iron plate; 26, accommodating chamber; 3, arc extinguishing unit; 31, arc extinguishing magnet; 32, yoke iron clamp; 4, control circuit module; 41, control circuit; 42, anti-interference element; 43, capacitor; 44, electric Resistance; 51, first connecting member; 511, first lead pin; 512, conductive column; 52, second connecting member; 521, first connecting portion; 522, second connecting portion; 523, third connecting portion; 53, third connecting member; 531, second lead pin; 532, winding column; 54, circuit board; 541, first through hole; 542, second through hole; 6, yoke seat; 61, first side wall; 62, second side wall; 63, bottom wall; X, first horizontal direction; Y, second horizontal direction; Z, vertical direction.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

A relay is an electronic control device, generally used to control the on and off of an external high-voltage load circuit. When the relay is working, the two ends of its coil will be connected to an external control circuit to energize the coil. The external control circuit can be called a low-voltage control circuit or a coil-end control circuit. Low voltage and high voltage are relative terms. It can also be understood that a relay is an "automatic switch" that uses a smaller current to control a larger current. It plays the role of automatic adjustment, safety protection, and conversion circuit in the load circuit.

A high-voltage DC relay is a relay that has the ability to handle high power. Under harsh conditions such as high voltage and high current, compared with conventional relays, high-voltage DC relays have higher reliability and longer service life and are widely used in various fields.

Taking the application of high-voltage DC relays in the field of new energy vehicles as an example, as the requirements for the cruising range of new energy vehicles continue to increase, the capacity of automobile batteries is also required to be higher and higher, and the requirements for rapid driving, emergency braking and acceleration from 100 kilometers to 100 kilometers are also getting higher and higher. In order to meet the above requirements, the current frequency provided by the battery continues to increase, which increases the current frequency span range of the input load. For example, when signals of different frequencies of 15K to 120MHz are input at the load end, the frequency range is expanded and interference signals of different frequencies are generated, such as low-frequency interference signals and high-frequency interference signals. These interference signals will be transmitted to the low-voltage control circuit of the relay through the magnetic conductive element and the air medium coupling, such as being transmitted to the coil, which will cause electromagnetic interference to the low-voltage control circuit, especially when a high-frequency signal is input at the load end, which will cause the signal transmitted to the coil end control circuit to be too strong, further affecting the operation of other components in the coil end control circuit, causing malfunctions, and making the relay unable to work normally. However, the above problems have not been effectively solved in the related technology.

Based on this, the embodiment of the present disclosure provides a relay. As shown in Figures 2, 4 to 7, Figure 2 shows a three-dimensional schematic diagram of a relay of the embodiment of the present disclosure, wherein the housing is omitted. Figure 4 shows a top view of Figure 2, Figure 5 shows a cross-sectional view along A-A in Figure 4, Figure 6 shows a front view of the relay, and Figure 7 shows a side view of the relay.

For the convenience of description, as shown in FIG2 , the assembled relay is used as a reference standard, and the height direction of the relay is defined as the vertical direction Z, the length direction of the relay is defined as the first horizontal direction X, and the width direction of the relay is defined as the second horizontal direction Y. The vertical direction Z, the first horizontal direction X, and the second horizontal direction Y are perpendicular to each other, and the first horizontal direction X and the second horizontal direction Y can be located in the same This direction is only for the convenience of explaining the structure of the relay and is not limiting.

The relay of the embodiment of the present disclosure includes a housing (not shown in the figure), a magnetic circuit unit 1 , a contact unit 2 and an arc extinguishing unit 3 .

In some embodiments, as shown in FIG5 , the contact unit 2 includes two static contact lead-out terminals 21, a movable spring 22, an insulating cover 23, a frame 24, and a yoke iron plate 25. The insulating cover 23, the frame 24, and the yoke iron plate 25 are assembled to form a receiving cavity 26, and two through holes are provided on the top of the insulating cover 23. The two static contact lead-out terminals 21 are respectively inserted into the two through holes, so that the lower parts of the two static contact lead-out terminals 21 are located in the receiving cavity 26.

Continuing to refer to FIG. 5 , the movable spring 22 is supported by the push rod assembly 13 in the magnetic circuit unit 1 in the accommodating cavity 26 and is located below the two static contact lead-out terminals 21. The two ends of the movable spring 22 can be used as movable contacts respectively, and the two movable contacts are used to contact the bottom of the two static contact lead-out terminals 21 respectively to achieve contact closure. The tops of the two static contact lead-out terminals 21 are connected to the external load circuit. When the movable contact is closed with the two static contact lead-out terminals 21, the current of the load circuit flows into one of the static contact lead-out terminals 21, passes through the movable spring 22, and then flows out from the other static contact lead-out terminal 21 to achieve connection of the external load circuit. When the movable contact is separated from the two static contact lead-out terminals 21, the load circuit is disconnected.

In the disclosed embodiment, the closing and separation of the moving contact and the two stationary contact lead-out terminals 21 are achieved by the movement of the push rod assembly 13 in the magnetic circuit unit 1 driving the moving reed 22 .

Specifically, referring to FIG5 , the magnetic circuit unit 1 includes a coil 11 and a coil frame 12. The coil frame 12 is in a hollow cylindrical shape and is made of insulating material. The coil 11 is wound on the coil frame 12. The magnetic circuit unit 1 also includes a push rod assembly 13, which includes a push rod 131, a bearing seat 132 and a first spring 133.

The push rod 131 is movably disposed in the coil frame 12, the yoke iron plate 25 and the accommodating chamber 26 in the axial direction. The first spring 133 is disposed at one end of the push rod 131 located in the accommodating chamber 26, and the bearing seat 132 is disposed at one end of the push rod 132 in the axial direction close to the movable spring piece 22. At least part of the bearing seat 132 is located in the accommodating chamber 26, and one end of the first spring 133 away from the movable spring piece 22 abuts against the bearing seat 132. The first spring 133 is used to apply an elastic force to the movable spring piece 22 to move toward the static contact lead-out terminal 21, and after the static contact lead-out terminal 21 contacts the movable spring piece 22, the first spring 133 can continue to be compressed to provide an overtravel.

The magnetic circuit unit 1 also includes a static iron core 14, a moving iron core 15 and a second spring 16. The static iron core 14 is arranged in the coil frame 12, and the static iron core 14 is fixedly connected to the yoke iron plate 25, and the push rod 131 is movably arranged in the static iron core 14. The moving iron core 15 is movably arranged in the coil frame 12, and is arranged opposite to the static iron core 14. The moving iron core 15 is connected to one end of the push rod 131 located in the coil frame 12. When the coil 11 is energized, a magnetic field is generated, the static iron core 14 attracts the moving iron core 15, and the moving iron core 15 drives the push rod 131 to move in the direction close to the static contact lead-out end 21, pushing the moving spring 22 to contact the static contact lead-out end 21, so as to realize the connection of the external load circuit. The second spring 16 is arranged between the static iron core 14 and the moving iron core 15, and is sleeved on the outside of the push rod 131. When the moving iron core 15 moves toward the direction close to the static contact lead-out terminal 21, the second spring 16 is compressed. When the coil 11 is powered off, the magnetic field disappears, and the moving iron core 15 is no longer attracted by the static iron core 14. The second spring 16 applies a reverse elastic force to the moving iron core 15, so that the moving iron core 15 quickly resets, and the moving spring piece 22 is separated from the static contact lead-out terminal 21, thereby disconnecting the external load circuit.

As shown in FIG5 , the relay further includes a yoke seat 6, which has at least two opposite first side walls 61 and second side walls 62, and a bottom wall 63 connected to one end of the first side wall 61 and the second side wall 62. The first side wall 61, the second side wall 62 and the bottom wall 63 form a receiving space, and the coil frame 12 is arranged in the receiving space and placed on the bottom wall 63. The yoke seat 6 and the yoke plate 25 enclose a space for the magnetic circuit unit 1 to be accommodated therein. When the coil 11 is energized to generate a magnetic field, the yoke seat 6 can prevent the magnetic field from spreading to the outside, thereby improving the utilization rate of the magnetic field.

Therefore, whether the coil 11 is energized determines whether the external load circuit is connected or disconnected. When the relay is in working state, it is connected to the external control circuit 41, and the control circuit 41 provides current to the coil 11, so the control circuit 41 plays a key role in the normal operation of the relay. The control circuit 41 is the coil end control circuit mentioned in the above embodiment, that is, the low-voltage control circuit. Among them, the "external" of the external control circuit 41 can be understood as not included in the relay.

As shown in FIG1 , when the movable spring 22 and the static contact lead-out terminal 21 in the embodiment of the present disclosure are closed, the movable spring 22 actually acts as a part of the external load circuit and plays a conductive role. The current of the load circuit flows into one static contact lead-out terminal 21 and flows out from the other static contact after passing through the movable spring 22. However, due to the load requirements, the voltage of the external load circuit is much higher than the voltage of the control circuit 41, and signals of different frequencies are input into the external load circuit. As can be seen from FIG1 , these signals of different frequencies will be transmitted to the control circuit 41 through magnetic conductive elements (such as the movable spring 22, the static iron core 14, the movable iron core 15, etc.), affecting the normal operation of the control circuit 41. Once the control circuit 41 becomes unstable, it will further affect whether the movable spring 22 and the static contact lead-out terminal 21 can be accurately contacted and separated.

Based on this, as shown in Figure 1, the relay of the embodiment of the present disclosure also includes an anti-interference element 42, which is connected to the coil 11, and when the coil 11 is electrically connected to the external control circuit 41, the coil 11 and the anti-interference element 42 are connected in series in the external control circuit 41.

As shown in FIG1 , the external control circuit 41 includes a power supply, a resistor 44 (which may be an electronic device), a switch (not shown in FIG1 ) and a wire to form a loop. When the relay is in operation, the two ends of the coil 11 are connected to the external control circuit 41, so that the coil 11 is connected in series with the resistor 44. The anti-interference element 42 is connected to the control circuit 41, and is connected in series with the coil 11 and the resistor 44.

In some embodiments, the anti-interference element 42 is at least one of a magnetic bead and an inductor. The magnetic bead is composed of an oxygen magnet, and the inductor is composed of a magnetic core and a coil. The magnetic bead converts the AC signal into heat energy, and the inductor stores the AC and releases it slowly. The magnetic bead is mainly used to suppress electromagnetic radiation interference, while the inductor focuses on suppressing conductive interference. Both can suppress high-frequency noise and spike interference, and can absorb or shield interference signals of multiple frequencies.

According to the strength and type of the interference signal, magnetic beads are selected as the anti-interference element 42, or inductors are selected as the anti-interference element 42, or magnetic beads and inductors are selected as the anti-interference element 42. Regarding the specifications of magnetic beads and inductors, those skilled in the art can also select them according to the specific situation of the interference signal, and no special limitation is made here.

In the embodiment of the present disclosure, a magnetic bead and/or an inductor is arranged in a relay and connected in series with the coil 11. When the relay is working, the anti-interference element is connected in series with the coil in the external control circuit, which can shield the interference signal transmitted from the external load circuit to the control circuit 41, and avoid the control circuit 41 from being affected by the excessively strong interference signal received, thereby ensuring the normal use of the relay. At the same time, when the relay is working, the anti-interference element 42 is actually connected in series with the control circuit 41, so as not to directly absorb or shield the signal in the external load circuit, thereby ensuring the normal operation of the load circuit.

In some embodiments, as shown in Figures 8 to 11, the relay further includes a first connector 51 and a second connector 52, which are used to connect the anti-interference element 42 to the external control circuit 41. Figure 8 shows a schematic diagram of the three-dimensional structure of the first connector 51 and the second connector 52 arranged on the coil frame 12, and Figure 9 is a cross-sectional view along B-B in Figure 8, showing the positional relationship between the first connector 51 and the second connector 52. Figure 10 shows a schematic diagram of the three-dimensional structure of the first connector 51, and Figure 11 shows a schematic diagram of the three-dimensional structure of the second connector 52.

As shown in FIGS. 8 to 10 , the first connector 51 is conductive and is provided on the coil frame 12. The first connector 51 has a first end and a second end. The first end is used to connect to one pole of the power supply of the external control circuit 41, and the second end is connected to one end of the anti-interference element 42. The second connector 52 is conductive and is provided on the coil frame 12. The second connector 52 has a third end and a fourth end. The third end is connected to the other end of the anti-interference element 42, and the fourth end is connected to one end of the coil 11. The other end of the coil 11 is used to connect to the external control circuit 41. The other pole of the power supply of the control circuit 41 is connected so that the coil 11 and the anti-interference element 42 form a loop when connected to the external control circuit.

In some embodiments, as shown in FIG. 8 , the coil frame 12 includes a first flange portion 121 , a winding portion 122 , and a second flange portion 123 . The first flange portion 121 and the second flange portion 123 are located on both sides of the winding portion 122 and protrude outward.

The winding portion 122 may be a hollow cylinder extending in the vertical direction Z, and the first flange portion 121 and the second flange portion 123 are located on opposite sides of the winding portion 122 in the vertical direction Z. The first flange portion 121 and the second flange portion 123 are located on both sides of the winding portion 122 and protrude outward, which can be understood as: the first flange portion 121 and the second flange portion 123 respectively extend away from the winding portion 122 along the radial direction of the winding portion 122.

As shown in Figures 8 and 10, the first connecting member 51 has a first lead-out pin 511 and a conductive column 512, the conductive column 512 is vertically connected to one end of the first lead-out pin 511, and a portion of the first connecting member 51 is embedded in the first flange portion 121. The first lead-out pin 511 extends along the vertical direction Z and extends from the bottom of the first flange portion 121, and the conductive column 512 extends along the first horizontal direction X and extends from the side of the first flange portion 121.

Specifically, in some embodiments, as shown in FIG. 10 , the first lead pin 511 is in a sheet shape and is used to connect to the control circuit 41. The conductive column 512 is located at one end of the first lead pin 511 and is perpendicular to the first lead pin 511. The conductive column 512 and the first lead pin 511 can be integrally formed. The conductive column 512 is used to electrically connect to one end of the anti-interference element 42. In some embodiments, the width of the conductive column 512 is less than the width of the first lead pin 511. Referring to FIG. 9 , the width of the conductive column 512 refers to the size of the conductive column 512 along the second horizontal direction Y, and the width of the first lead pin 511 refers to the size of the first lead pin 511 along the second horizontal direction Y. Setting the width of the conductive column 512 to be less than the width of the first lead pin 511 facilitates wiring and saves space and materials.

Among them, the part of the first lead-out pin 511 extending out of the first flange portion 121 is the first end of the first connecting member 51, which is used to connect to the control circuit 41, and the part of the conductive column 512 extending out of the first flange portion 121 is the second end of the first connecting member 51, which is used to connect to one end of the anti-interference element 42.

In some embodiments, as shown in Figures 8 to 9 and 11, the second connecting member 52 is roughly U-shaped, having a first connecting portion 521, a second connecting portion 522 and a third connecting portion 523 connected in sequence, at least the second connecting portion 522 is embedded in the first flange portion 121 of the coil frame 12, and the first connecting portion 521 and the third connecting portion 523 both extend along the first horizontal direction X and extend from the side of the first flange portion 121.

Specifically, as shown in FIG11 , the second connecting member 52 is generally U-shaped, and the length of the first connecting portion 521 is less than the length of the third connecting portion 523. Referring to FIG9 , the length of the first connecting portion 521 refers to the dimension of the first connecting portion 521 along the first horizontal direction X, and the length of the third connecting portion 523 refers to the dimension of the third connecting portion 523 along the first horizontal direction X. The third connecting portion 523 has teeth-shaped opposite sides along the second horizontal direction Y, so that one end of the coil 11 is easily wound around the third connecting portion 523 and is not easy to slip off.

In some embodiments, the portion of the first connecting portion 521 extending out of the first flange portion 121 is the third end of the second connecting member 52, which is used to connect to the other end of the anti-interference element 42, and the portion of the third connecting portion 523 extending out of the first flange portion 121 is the fourth end of the second connecting member 52, which is used to connect to one end of the coil 11.

In some embodiments, as shown in Figures 8 and 9, the first connecting member 51 and the second connecting member 52 are located on the same side of the first flange portion 121, and the first connecting portion 521, the third connecting portion 523 of the second connecting member 52 and the conductive column 512 of the first connecting member 51 are spaced apart in the second horizontal direction Y.

Specifically, the first connector 51 and the second connector 52 are disposed adjacent to each other. As shown in FIG. 9 , in some embodiments, the projections of the first lead pin 511 of the first connector 51 and the second connecting portion 522 of the second connector 52 in the first horizontal direction X at least partially overlap. The stacking can reduce the distance between the first connecting portion 521 of the first connecting member 51 and the conductive column 512 of the second connecting member 52 in the second horizontal direction Y, thereby reducing the space occupied by the control circuit 41 connected to the anti-interference element 42, making the structure of the relay more compact.

In some embodiments, as shown in FIGS. 8 and 9 , a groove 1211 is provided at the edge of the first flange portion 121 corresponding to the third connection portion 523, and the third connection portion 523 extends out of the groove 1211. The third connection portion 523 has toughness, and when the third connection portion 523 is connected to one end of the coil 11, the third connection portion 523 is configured to be able to be bent to extend along the vertical direction Z. That is, one end of the coil 11 can be wound around the third connection portion 523, so that the coil 11 is electrically connected to the control circuit 41, and the end of the coil 11 is conveniently stored.

In some embodiments, as shown in Figures 8 and 9, the relay further includes a third connector 53. The third connector 53 is conductive and is disposed on the coil frame 12. The third connector 53 has a fifth end and a sixth end. The fifth end is connected to the other end of the coil 11, and the sixth end is used to connect to the other pole of the power supply of the external control circuit 41.

Specifically, as shown in Figure 8, the third connecting member 53 may include a second lead-out pin 531 and a winding post 532, the winding post 532 is vertically connected to one end of the second lead-out pin 531, and a portion of the third connecting member 53 is embedded in the first flange portion 121 of the coil frame 12, the second lead-out pin 531 extends along the vertical direction Z and extends from the bottom of the first flange portion 121, and the winding portion 122 extends along the first horizontal direction X and extends from the side of the first flange portion 121.

Specifically, in some embodiments, as shown in FIG8 , the second lead pin 531 is in a sheet shape and is used to connect to the external control circuit 41. The second lead pin 531 is equivalent to the sixth end of the third connector 53. The structure of the second lead pin 531 may be the same as that of the first lead pin 511. The winding post 532 is located at one end of the first lead pin 511 and is perpendicular to the second lead pin 531. The winding post 532 and the first lead pin 511 may be integrally formed. The opposite sides of the winding post 532 along the second horizontal direction Y may be tooth-shaped. The winding post 532 is used to connect to the other end of the coil 11, that is, the other end of the coil 11 is wound on the winding post 532, so that the coil 11 is electrically connected to the external control circuit 41, and the other end of the coil 11 is convenient to receive. The winding post 532 is equivalent to the fifth end of the third connector 53.

In this way, as shown in Figures 1 to 3, when the relay is in working state, the first lead pin 511 and the second lead pin 531 are connected to the control circuit 41. Assuming that the second lead pin 531 is connected to the positive pole of the power supply of the control circuit 41, the current flows through the second lead pin 531 of the third connector 53, the winding column 532, the coil 11, the third connection part 523 of the second connector 52, the second connection part 522, the first connection part 521, the anti-interference element 42, the conductive column 512 of the first connector 51, and then flows back to the negative pole of the power supply of the control circuit 41 through the first lead pin 511 of the first connector 51.

When the interference signal of the load circuit is transmitted to the control circuit 41, the interference signal is absorbed or shielded after flowing through the anti-interference element 42, so that the interference signal does not interfere with the normal operation of the control circuit 41, ensuring the stability of the control circuit 41 and ensuring that the relay can work normally.

In some embodiments, the first connecting member 51, the second connecting member 52 and the third connecting member 53 may also be arranged on the second flange portion 123 of the coil frame 12. Those skilled in the art may arrange them according to actual conditions, and no special limitation is made here.

As shown in FIGS. 3, 6 and 12, the relay of the disclosed embodiment further includes a printed circuit board 54 (PCB), and the anti-interference element 42 is disposed on the circuit board 54. The circuit board 54 has a first through hole 541 and a second through hole 542, the second end (conductive column 512) of the first connector 51 is passed through the first through hole 541 and extends out of the circuit board 54, and the third end (first connecting portion 521) of the second connector 52 is passed through the second through hole 542 and extends out of the circuit board 54.

Specifically, the anti-interference element 42 can be fixed on a surface of the circuit board 54 by welding, and the welding can be soldering. Of course, the anti-interference element 42 can also be fixed by other connection methods such as screw connection and bonding, which are not specifically limited here.

In some embodiments, the circuit board 54 is connected to the conductive column 512 of the first connecting member 51 and the first connecting portion 512 of the second connecting member 52. 521 is welded, and the first connecting member 51 and the second connecting member 52 are fixedly connected to the coil frame 12 (such as being integrally formed with the coil frame 12) to fix the circuit board 54. Of course, the circuit board 54 can also be fixedly connected in other ways, and those skilled in the art can set it according to the position and connection relationship of the circuit board 54, which is not particularly limited here.

In addition, the circuit board 54 may be disposed outside the housing (not shown) of the relay, such as the outer surface of the housing, or may be disposed inside the housing, which is not particularly limited herein.

As shown in FIG2 , the anti-interference element 42 is located on the surface of the circuit board 54 on the side away from the coil frame 12, and the anti-interference element 42 is located between the first through hole 541 and the second through hole 542. The first through hole 541 of the circuit board 54 corresponds to the conductive column 512 of the first connector 51, so that the conductive column 512 is inserted into the first through hole 541 and extends out of the first through hole 541, and the second through hole 542 corresponds to the first connecting portion 521 of the second connector 52, so that the first connecting portion 521 is inserted into the second through hole 542 and extends out of the second through hole 542. Therefore, the anti-interference element 42 is located between the conductive column 512 of the first connector 51 and the first connecting portion 521 of the second connector 52, so as to facilitate the electrical connection of the three.

By providing the circuit board 54, the anti-interference element 42 can be integrated into one module (for example, when there are multiple anti-interference elements 42), which has a compact structure and is convenient for installing the anti-interference element 42, thus simplifying the installation process.

In some embodiments, to further facilitate installation, the dimension of the conductive column 512 of the first connector 51 extending out of the first flange portion 121 is the same as the dimension of the first connector 521 of the second connector 52 extending out of the first flange portion 121 .

In some embodiments, the coil 11 has an input end and an output end, and when the relay is working, the anti-interference element 42 is located downstream of the output end in the control circuit 41. That is, the current in the control circuit 41 flows through the coil 11 first, and then flows through the anti-interference element 42.

Of course, in other embodiments, the anti-interference element 42 may also be located upstream of the input end of the coil 11 in the control circuit 41 , that is, the current in the control circuit 41 first flows through the anti-interference element 42 and then flows through the coil 11 .

In some embodiments, the number of anti-interference elements 42 is one or more, for example, the anti-interference element 42 is a magnetic bead or an inductor, the anti-interference element 42 may also have a magnetic bead and an inductor at the same time, the anti-interference element 42 may also have multiple magnetic beads and multiple inductors at the same time, and technicians in this field can make a choice based on the strength of the interference signal in actual conditions, and no special limitation is made here.

In summary, in the disclosed embodiment, when the relay is working, the anti-interference element 42 is connected in series with the coil 11 and the external control circuit 41, which can significantly reduce and shield the interference signals of different frequencies transmitted from the external load circuit to the control circuit 41 connected to the relay, and avoid the control circuit 41 from receiving too strong interference signals that affect the normal operation of the components in the control circuit 41, thereby ensuring the normal use of the relay. At the same time, when the relay is working, the anti-interference element 42 is actually connected in series with the control circuit 41, so as not to directly absorb or shield the signals in the external load circuit, thereby ensuring the normal operation of the external load circuit.

As shown in Figures 1 and 5, the relay of the embodiment of the present disclosure also includes an arc extinguishing unit 3, which is used to extinguish the arc generated between the static contact lead-out terminal 21 and the moving reed 22. As shown in Figure 5, the arc extinguishing unit 3 includes two arc extinguishing magnets 31. The arc extinguishing magnets 31 can be permanent magnets, and each arc extinguishing magnet 31 can be roughly rectangular. The two arc extinguishing magnets 31 are arranged on opposite sides of the insulating cover 23 along the first horizontal direction X. By setting two relatively arranged arc extinguishing magnets 31, a magnetic field can be formed around the static contact lead-out terminal 21 and the moving reed 22. Therefore, the arc generated between the static contact lead-out terminal 21 and the moving reed 22 will be elongated in a direction away from each other by the action of the magnetic field to achieve arc extinguishing.

The arc extinguishing unit 3 further includes two yoke iron clips 32, and the two yoke iron clips 32 are arranged corresponding to the positions of the two arc extinguishing magnets 31. In addition, the two yoke iron clips 32 surround the insulating cover 23 and the two arc extinguishing magnets 31. By designing that the yoke iron clips 32 surround the arc extinguishing magnets 31, it is possible to avoid The magnetic field generated by the arc extinguishing magnet 31 spreads outward, affecting the arc extinguishing effect. The yoke iron clamp 32 is made of soft magnetic material. The soft magnetic material may include but is not limited to iron, cobalt, nickel, and alloys thereof.

As shown in Fig. 13, the embodiment of the present disclosure further provides a control device, including a control circuit 41 and a relay. The relay includes a coil 11 and an anti-interference element 42, and the anti-interference element 42 is connected in series with the coil 11 in the control circuit 41.

In some embodiments, the anti-interference element is at least one of a magnetic bead and an inductor.

The relay may be the relay in any of the above embodiments, and its specific structure will not be described in detail.

As shown in FIG. 13 , the control circuit 41 has a power supply, a resistor 44 (which can be an electronic component), a switch and a wire. The anti-interference element 42 and the coil 11 are connected in series in the control circuit 41 to form a current loop.

In the control device of the disclosed embodiment, when the relay is working, the control circuit 41 is electrically connected to the relay, and the anti-interference element 42 can significantly reduce and shield the interference signal transmitted from the load end to the coil 11, thereby ensuring the normal use of the relay. At the same time, the anti-interference element 42 is connected in series to the control circuit 41, and will not directly absorb or shield the signal in the external load circuit, thereby ensuring the normal operation of the external load circuit.

As shown in FIG14 , the embodiment of the present disclosure further provides a control circuit module 4 for controlling an electronic device. The control circuit module 4 includes a control circuit 41 and an anti-interference element 42. The control circuit 41 is used to be electrically connected to the electronic device. The anti-interference element 42 is electrically connected to the control circuit 41 and is used to be connected in series with the electronic device.

Specifically, the control circuit 41 has a power supply, a resistor 44 (which can be an electronic component), a switch and a wire, and can form a current loop. In the disclosed embodiment, the control circuit 41 has two connection terminals for electronic devices to be connected to the control circuit 41, which are connected in series with the anti-interference element 42 and the above-mentioned resistor 44. Among them, the anti-interference element 42 can be a magnetic bead and/or an inductor.

In some embodiments, the electronic device may be a relay in any of the above embodiments, and the control circuit 41 is used to be connected in series with the coil 11 of the relay.

An anti-interference element 42 is provided in the control circuit module 41 in the embodiment of the present disclosure. When the control circuit 41 is connected to the electronic device, it can shield the high and low frequency interference signals transmitted to the control circuit 41 from the external load circuit, thereby ensuring the normal operation of the relay.

Electronic devices may also be other components that are interfered with by interference signals from external load circuits, such as contactors, circuit breakers, etc. Applying the control circuit module of the embodiment of the present disclosure to electronic devices can shield the influence of external interference signals on the electronic devices and ensure the normal operation of the electronic devices.

The embodiment of the present disclosure also provides a relay, as shown in Figures 16, 18 to 21, wherein Figure 16 shows a three-dimensional schematic diagram of the relay of the embodiment of the present disclosure, wherein the housing is omitted. Figure 18 shows a top view of Figure 16, Figure 19 shows a cross-sectional view along A-A in Figure 18, Figure 20 shows a front view of the relay, and Figure 21 shows a side view of the relay.

The relay of the disclosed embodiment includes a housing (not shown in the figure), a magnetic circuit unit 1, a contact unit 2 and an arc extinguishing unit 3. As shown in Figures 18 and 19, the magnetic circuit unit 1, the contact unit 2 and the arc extinguishing unit 3 are the same as those described in some of the above embodiments, and will not be repeated here.

As shown in FIG. 15 , the relay of the embodiment of the present disclosure further includes an anti-interference element 42 connected in series with the coil 11 to form a series assembly for electrically connecting to an external control circuit 41 .

As shown in FIG15 , the external control circuit 41 includes a power supply, a resistor 44 (which may be an electronic device), a switch (not shown in FIG15 ) and a wire to form a loop. When the relay is in operation, the two ends of the coil 11 are connected to the external control circuit 41, so that the coil 11 is connected in series with the resistor 44. The anti-interference element 42 is connected to the control circuit 41, and is connected in series with the coil 11 and the resistor 44.

In some embodiments, the anti-interference element 42 is at least one of a magnetic bead and an inductor. The magnetic bead is composed of an oxygen magnet, and the inductor is composed of a magnetic core and a coil. The magnetic bead converts the AC signal into heat energy, and the inductor stores the AC and releases it slowly. The magnetic bead is mainly used to suppress electromagnetic radiation interference, while the inductor focuses on suppressing conductive interference. Both can suppress high-frequency noise and spike interference, and can mainly absorb or shield high-frequency interference signals.

In the embodiment of the present disclosure, a magnetic bead and/or an inductor is arranged in a relay and connected in series with the coil 11. When the relay is working, it can shield the interference signal transmitted from the external load circuit to the control circuit 41, and in particular, it can significantly reduce and shield the higher-frequency interference signal in the interference signal transmitted from the load end to the coil 11, so as to avoid the control circuit 41 from receiving an excessively strong interference signal and affecting the normal operation of the components in the control circuit 41, thereby ensuring the normal use of the relay. At the same time, when the relay is working, the anti-interference element 42 is actually connected in series with the control circuit 41, so as not to directly absorb or shield the higher-frequency interference signal in the external load circuit, thereby ensuring the normal operation of the load circuit.

As shown in FIG. 15 , the relay of the disclosed embodiment further includes a capacitor 43, which is connected to a series assembly formed by the coil 11 and the anti-interference element 42, and when the series assembly is connected to an external control circuit 41, the capacitor 43 is not connected in series with the series assembly.

In some embodiments, as shown in FIG. 15 , one end of the capacitor 43 is connected to the series component, and the other end is grounded.

Specifically, as shown in Figure 15, one end of the capacitor 43 can be connected between the coil 11 and the anti-interference element 42, or it can be connected to one end of the entire series component. When the relay is electrically connected to the external control circuit 41, as long as one end of the capacitor 43 can be electrically connected to the control circuit 41, no special limitation is made here.

It should be noted that the other end of the capacitor 43 is grounded when the relay is working. The other end of the capacitor 43 is directly grounded through a wire, or the other end of the capacitor 43 is connected to other conductors, such as the conductive material of the relay, and grounded through the conductor.

In some other embodiments, the capacitor 43 is connected in parallel with at least one of the coil 11 and the anti-interference element 42 .

Specifically, the capacitor 43 can be connected in parallel with the coil 11, can be connected in parallel with the anti-interference element 42, and can also be connected in parallel with the series assembly formed by the coil 11 and the anti-interference element 42. When the relay is electrically connected to the external control circuit 41, the capacitor 43 can be connected to the control circuit and realize the above-mentioned parallel connection, which is not particularly limited here.

When the relay is in working state, interference signals of different frequencies from the external load circuit will propagate to the control circuit 41, causing the control circuit 41 to carry AC interference signals of different frequencies. Since the capacitor 43 has the characteristics of blocking DC and passing AC, these AC interference signals can be exported through the capacitor 43, so it can also play a shielding role. Therefore, no matter one end of the capacitor 43 is grounded or the capacitor 43 is connected in parallel with the series component, the interference signal can be exported.

In addition, the frequency of the interference signal derived by the capacitor 43 is related to the specifications of the capacitor 43. The specifications of the capacitor 43 can be understood as capacitance. The smaller the specifications of the capacitor 43, the easier it is to derive a lower frequency interference signal. The interference signal has a frequency range, and the capacitor 43 and the anti-interference element 42 can both derive or absorb low-frequency interference signals and high-frequency interference signals in the frequency range, but the capacitor 43 is more likely to derive lower-frequency interference signals within the frequency range, and the anti-interference element is more likely to shield relatively high-frequency interference signals within the frequency range. The two work together to shield interference signals within all frequency ranges that are conducted to the coil.

Regarding the specifications of the capacitor 43 , those skilled in the art can select them according to the frequency of the interference signal, and no special limitation is made here.

Therefore, in the embodiment of the present disclosure, when the relay is working, the anti-interference element 42 is connected in series with the coil 11 to form a series assembly, which can significantly reduce and shield the higher frequency interference signal in the interference signal input from the load end and transmitted to the coil 11, and the capacitor 43 is connected to the series assembly, and is not connected in series with the series assembly, which can significantly reduce and shield the higher frequency interference signal input from the load end and transmitted to the coil 11. The lower frequency interference signals among the interference signals can be identified, thereby comprehensively shielding the interference signals of different frequencies to ensure the normal operation of the relay.

In some embodiments, as shown in FIGS. 8 to 11 , the relay further includes a first connector 51, a second connector 52, and a third connector 53, which are the same as the structures of the first connector 51, the second connector 52, and the third connector 53 described in the above embodiments, and are not described in detail here. The first connector 51, the second connector 52, and the third connector 53 are used to connect the anti-interference element 42 and the capacitor 43 to the external control circuit 41.

In some embodiments, as shown in FIG. 17 , the second end of the first connector 51 is also connected to one end of the capacitor 43 , and the other end of the capacitor 43 is grounded.

In some embodiments, one end of the capacitor 43 is connected to the conductive column 512 of the first connector 51 to realize the electrical connection between the one end of the capacitor 43 and the control circuit 41; the other end of the capacitor 43 is grounded. Of course, in other embodiments, one end of the capacitor 43 can also be connected to the first connection portion 521 of the second connector 52, or one end of the capacitor 43 is directly connected to the control circuit 41. As long as the relay works normally, one end of the capacitor 43 is electrically connected to the external control circuit 41, and no special limitation is made here.

In this way, as shown in Figures 15 to 17, when the relay is in working state, the first lead pin 511 and the second lead pin 531 are connected to the control circuit 41. Assuming that the second lead pin 531 is connected to the positive pole of the power supply of the control circuit 41, for the anti-interference element 42, the current flows through the second lead pin 531 of the third connector 53, the winding column 532, the coil 11, the third connection part 523 of the second connector 52, the second connection part 522, the first connection part 521, the anti-interference element 42, the conductive column 512 of the first connector 51, and then flows back to the negative pole of the power supply of the control circuit 41 through the first lead pin 511 of the first connector 51. For the capacitor 43, the current flows through the second lead pin 531 of the third connector 53, the winding column 532, the coil 11, the third connection part 523 of the second connector 52, the second connection part 522, the first connection part 521 (or flows from the first connection part 521 to the anti-interference element 42, the conductive column 512), and the capacitor 43 in sequence.

After the interference signal of the load circuit is transmitted to the control circuit 41, the high-frequency interference signal is absorbed or shielded after flowing through the anti-interference element 42, so that the high-frequency interference signal does not interfere with the normal operation of the control circuit 41. The low-frequency interference signal flows into one end of the capacitor 43 and is exported through the capacitor 43. Therefore, both the high-frequency interference signal and the low-frequency interference signal are eliminated from the control circuit 41, ensuring the stability of the control circuit 41 and ensuring that the relay can work normally.

As shown in Figures 22 to 25, in some embodiments, the relay may further include a yoke seat 6 and a lead-out piece 55. The coil frame 12 is placed on the yoke seat 6, one end of the lead-out piece 55 is connected to the side wall of the yoke seat 6, and the other end is connected to the other end of the capacitor 43. In some embodiments, the yoke seat 6 has at least two opposite first side walls 61 and second side walls 62, and a bottom wall 63 connected to one end of the first side wall 61 and the second side wall 62. The first side wall 61, the second side wall 62 and the bottom wall 63 form a receiving space, and the coil frame 12 is arranged in the receiving space and placed on the bottom wall 63. One end of the lead-out piece 55 is connected to the first side wall 61 of the yoke seat 6 close to the capacitor 43, and the other end of the lead-out piece 55 is connected to the other end of the capacitor 43, and the lead-out piece 55 has conductivity to derive the interference signal absorbed in the capacitor 43.

Therefore, the yoke seat 6 is connected to the other end of the capacitor 43 as a conductor to realize the grounding of the capacitor 43. In addition, as shown in Figure 19, the yoke seat 6 and the yoke plate 25 enclose a space for the magnetic circuit unit 1 to be accommodated therein. When the coil 11 is energized to generate a magnetic field, the yoke seat 6 can prevent the magnetic field from spreading to the outside, thereby improving the utilization rate of the magnetic field.

In some embodiments, as shown in FIG. 22 , the lead-out member 55 has a first lead-out portion 551, a second lead-out portion 552 connected in sequence. The first lead-out portion 551 and the third lead-out portion 553 are located on opposite sides of the second lead-out portion 552, so that the lead-out member 55 is roughly in a "Z" shape. The lead-out member 55 can be integrally formed. The first lead-out portion 551 is used to be fixedly connected to the yoke iron seat 6, and the third lead-out portion 553 is used to connect to the capacitor 43.

As shown in Figures 20 and 23, the yoke seat 6 is U-shaped, and the first side wall 61 and the second side wall 62 of the yoke are arranged opposite to each other in the second horizontal direction Y and extend along the vertical direction Z. The first side wall 61 is closer to the capacitor 43 than the second side wall 62. The first side wall 62 of the yoke seat 6 is provided with a receiving groove 611, and the first lead-out portion 551 is fixedly disposed in the receiving groove 611. Specifically, as shown in FIG. 23 , the first side wall 61 is provided with the above-mentioned receiving groove 611 on one side close to the capacitor 43. The receiving groove 611 is recessed inward from the outer surface of the first side wall 61. The depth of the receiving groove 611 is defined as the dimension from the opening of the receiving groove 611 to the bottom of the receiving groove 611 along the second horizontal direction Y. The thickness of the first side wall 61 is the dimension of the first side wall 61 along the second horizontal direction Y. The depth of the receiving groove 611 is smaller than the thickness of the first side wall 61. In other words, the dimension of the receiving groove 611 recessed inward from the outer surface of the first side wall 61 is smaller than the thickness of the first side wall 61. The bottom of the receiving groove 611 is opposite to its opening, and the bottom is the remaining part of the first side wall 61 after the receiving groove 611 is provided. In addition, the side of the first side wall 61 corresponding to the receiving groove 611 also has a notch 612, and the notch 612 is connected to the receiving groove 611 in the second horizontal direction Y.

As shown in Figure 22, the first lead-out portion 551 may have a rivet hole 5511, as shown in Figure 24, the bottom of the receiving groove 611 has another rivet protrusion 6111, the first lead-out portion 551 is placed in the receiving groove 611, and the rivet protrusion 6111 at the bottom of the receiving groove 611 is riveted through the rivet hole 5511, so that the first lead-out portion 551 is riveted to the first side wall 61 of the yoke iron seat 6. In some embodiments, the first lead-out portion 551 and the third lead-out portion 553 are respectively perpendicular to the second lead-out portion 552, so that the above-mentioned notch 612 is set, and the second lead-out portion 552 can be given way, so that the structure of the relay is more compact and the volume of the relay is reduced. In addition, the third lead-out portion 553 of the lead-out member 55 is connected to the capacitor 43 to realize the conduction of the interference signal flowing through the capacitor 43 to the yoke iron seat 6, thereby realizing the grounding of the other end of the capacitor 43.

As shown in Fig. 17, Fig. 20 and Fig. 25, the relay of the embodiment of the present disclosure further includes a circuit board 54 (PCB for short), and the anti-interference element 42 and the capacitor 43 are arranged on the circuit board 54. The circuit board 54 has a first through hole 541, a second through hole 542 and a third through hole 543, the second end (conductive column 512) of the first connecting member 51 is inserted into the first through hole 541 and extends out of the circuit board 54, the third end (first connecting portion 521) of the second connecting member 52 is inserted into the second through hole 542 and extends out of the circuit board 54, and the third lead-out portion 553 of the lead-out member 55 is inserted into the third through hole 543 and extends out of the circuit board 54.

Specifically, the capacitor 43 and the anti-interference element 42 can be fixed on the same surface of the circuit board 54 by welding, and the welding can be soldering. Of course, the capacitor 43 and the anti-interference element 42 can also be fixed by other connection methods such as screw connection and bonding, which are not specifically limited here.

In some embodiments, the circuit board 54 is welded to the conductive column 512 of the first connector 51, the first connecting portion 521 of the second connector 52, and the third lead-out portion 553 of the lead-out member 55, respectively. The first connector 51 and the second connector 52 are fixedly connected to the coil frame 12 (such as integrally formed with the coil frame 12), and the first lead-out portion 551 of the lead-out member 55 is riveted to a side wall of the yoke iron seat 6, thereby fixing the circuit board 54. In other embodiments, the circuit board 54 can be fixed to the yoke iron seat 6 by welding, riveting, screwing, etc. Of course, the circuit board 54 can also be fixedly connected by other means, and those skilled in the art can set it according to the position and connection relationship of the circuit board 54, which is not specifically limited here. In addition, the circuit board 54 can be arranged on the outside of the housing of the relay (not shown in the figure), such as the outer surface of the housing, or it can be arranged on the inside of the housing, which is not specifically limited here.

As shown in FIG. 16 , the anti-interference element 42 and the capacitor 43 are located on the surface of the circuit board 54 away from the coil frame 12, and the anti-interference element 42 is located between the first through hole 541 and the second through hole 542. The first through hole 541 of the circuit board 54 corresponds to the first connecting member 51 The conductive column 512 of the first through hole 541 is arranged to pass through the first through hole 541 and extend out of the first through hole 541. The second through hole 542 corresponds to the first connecting portion 521 of the second connecting member 52, so that the first connecting portion 521 passes through the second through hole 542 and extends out of the second through hole 542. Therefore, the anti-interference element 42 is located between the conductive column 512 of the first connecting member 51 and the first connecting portion 521 of the second connecting member 52, which facilitates the electrical connection of the three. The third through hole 543 corresponds to the third lead-out portion 553 of the third connecting member 53, so that the third lead-out portion 553 passes through the third through hole 543 and extends out of the third through hole 543. The capacitor 43 is close to the third through hole 543, which is convenient for connection with the third lead-out portion 553.

By providing the circuit board 54 , the anti-interference element 42 and the capacitor 43 can be integrated into one module, which has a compact structure and simplifies installation.

In some embodiments, the coil 11 has an input end and an output end, and when the relay is working, the anti-interference element 42 and the capacitor 43 are located downstream of the output end in the control circuit 41. That is, the current in the control circuit 41 first flows through the coil 11, and then flows through the anti-interference element 42 and the capacitor 43.

Of course, in other embodiments, the anti-interference element 42 and the capacitor 43 may also be located upstream of the input end of the coil 11 in the control circuit 41. That is, the current in the control circuit 41 first flows through the anti-interference element 42 and the capacitor 43, and then flows through the coil 11.

In some embodiments, the number of the anti-interference element 42 is one, and the number of the capacitor 43 is one or more.

In some other embodiments, the number of the anti-interference elements 42 is plural, and the number of the capacitors 43 is one or more.

In some embodiments, the anti-interference element 42 can be a magnetic bead or an inductor. The anti-interference element 42 can also have both a magnetic bead and an inductor. The anti-interference element 42 can also have multiple magnetic beads and multiple inductors. Technical personnel in this field can make a choice based on the strength of the interference signal in actual conditions, and no special limitation is made here.

It is found in the study that for interference signals with a frequency range, the magnetic beads/inductors can mainly reduce and shield the higher frequency interference signals within the frequency range, and the capacitor 43 can mainly reduce and shield the relatively lower frequency interference signals within the frequency range. The smaller the size of the capacitor 43, the easier it is to derive the lower frequency interference signal, and the smaller the size of the capacitor 43, the smaller the frequency range of the interference signal that can be derived by the capacitor 43. Therefore, the number of anti-interference elements 42 and capacitors 43 can be considered to be set according to the frequency range of the interference signal and the size of the capacitor 43. The number of anti-interference elements 42 can be one or more, and the number of capacitors 43 can also be one or more. Those skilled in the art can set it according to the actual situation, and no special limitation is made here.

In summary, in the disclosed embodiment, when the relay is working, the anti-interference element 42 is connected in series with the coil 11 to form a series assembly, which can significantly reduce and shield the interference signal transmitted from the external load circuit to the control circuit 41 connected to the relay, especially can significantly reduce and shield the higher frequency interference signal in the interference signal transmitted from the load end to the coil 11, avoid the control circuit 41 due to the interference signal received being too strong and affecting the normal operation of the components in the control circuit 41, and ensure the normal use of the relay. At the same time, when the relay is working, the anti-interference element 42 is actually connected in series with the control circuit 41, so as not to directly absorb or shield the signal in the external load circuit, and ensure the normal operation of the external load circuit. The capacitor 43 is connected to the series assembly, and is not connected in series with the series assembly, which can significantly reduce and shield the lower frequency interference signal in the interference signal input from the load end and transmitted to the coil 11, and then can fully shield the interference signal, and ensure the normal operation of the relay.

As shown in FIG26 , the embodiment of the present disclosure further provides a control device, including a control circuit 41 and a relay. The relay includes a coil 11, an anti-interference element 42 and a capacitor 43. The anti-interference element 42 is connected in series with the coil 11 to form a series assembly, and the series assembly is connected to the control circuit 41; the capacitor 43 is connected to the series assembly, and the capacitor 43 and the series assembly are connected in the control circuit. 41 are not connected in series.

As shown in Figure 26, the control circuit 41 has a power supply, a resistor 44 (which can be an electronic component), a switch and a wire, and the series components are connected to the control circuit 41 to form a current loop. In some embodiments, one end of the capacitor 43 is connected to the control circuit 41, and the other end is grounded. In other embodiments, the capacitor 43 is connected in parallel to the control circuit 41, that is, the capacitor 43 is connected in parallel with at least one of the anti-interference element 42, the coil 11 and the resistor 44.

In the control device of the disclosed embodiment, when the relay is working, the control circuit 41 is electrically connected to the relay, and the anti-interference element 42 can significantly reduce and shield the higher-frequency interference signals in the interference signals transmitted from the load end to the coil 11, thereby ensuring the normal use of the relay. At the same time, the anti-interference element 42 is connected in series in the control circuit 41, and will not directly absorb or shield the signals in the external load circuit, thereby ensuring the normal operation of the external load circuit. The capacitor 43 is connected to the series component, and is not connected in series with the series component, which can significantly reduce and shield the low-frequency interference signals in the interference signals input from the load end and transmitted to the coil 11, and can then comprehensively shield the interference signals of different frequencies, thereby ensuring the normal operation of the relay.

As shown in FIG. 27 , the embodiment of the present disclosure further provides a control circuit module 4 for controlling an electronic device. The control circuit module 4 includes a control circuit 41, an anti-interference element 42, and a capacitor 43. The control circuit 41 is used to be electrically connected to the electronic device. The anti-interference element 42 is electrically connected to the control circuit 41 and is used to be connected in series with the electronic device. The capacitor 43 is electrically connected to the control circuit 41, and when the control circuit 41 is electrically connected to the electronic device, the capacitor 43 is not connected in series with the electronic device and the anti-interference element 42.

Specifically, the control circuit 41 has a power supply, a resistor 44 (which can be an electronic component), a switch and a wire, and a current loop can be formed. In the disclosed embodiment, the control circuit 41 has two connection terminals for electronic devices to be connected to the control circuit 41, connected in series with the anti-interference element 42 and the above-mentioned resistor 44, and one end of the capacitor 43 can be connected to any place in the control circuit 41, and the other end of the capacitor 43 is grounded, or the capacitor 43 is connected in parallel with at least one of the anti-interference element 42 and the resistor 44, or when the control circuit 41 is electrically connected to the electronic device, the capacitor 43 is connected in parallel with the electronic device. Wherein, the anti-interference element 42 can be a magnetic bead and/or an inductor.

In the disclosed embodiment, an anti-interference element 42 and a capacitor 43 are provided in the control circuit module 41. When the control circuit 41 is connected to the electronic device, the high and low frequency interference signals transmitted from the external load circuit to the control circuit 41 can be fully shielded to ensure the normal operation of the relay.

The embodiment of the present disclosure further provides a relay, as shown in Figure 29, Figure 31, Figures 18 to 19 and Figure 21, wherein Figure 29 shows a three-dimensional schematic diagram of the relay of the embodiment of the present disclosure, wherein the housing is omitted. Figure 18 shows a top view of Figure 29, Figure 19 shows a cross-sectional view along D-D in Figure 18, Figure 31 shows a front view of the relay, and Figure 21 shows a side view of the relay.

The relay of the embodiment of the present disclosure includes a housing (not shown in the figure), a magnetic circuit unit 1, a contact unit 2 and an arc extinguishing unit 3. As shown in Figures 18 and 19, the magnetic circuit unit 1, the contact unit 2 and the arc extinguishing unit 3 are the same as those described in some of the above embodiments. I will not go into details here.

As shown in Fig. 28, the relay of the embodiment of the present disclosure further includes a capacitor 43 connected to the coil 11. When the coil 11 is electrically connected to the external control circuit 41, that is, when the relay is in working state, the capacitor 43 is not connected in series with the coil.

As shown in FIG28 , the external control circuit 41 includes a power supply, a resistor 44 (which may be an electronic device), a switch (not shown in FIG28 ) and a wire to form a loop. When the relay is in operation, both ends of the coil 11 are connected to the external control circuit 41, so that the coil 11 is connected in series with the resistor 44. The capacitor 43 is connected to the coil 11, so that the capacitor 43 and the coil 11 are not connected in series in the control circuit 41.

In some embodiments, as shown in FIG. 28 , one end of the capacitor 43 is connected to the coil 11 , and the other end is grounded.

Specifically, as shown in FIG. 28 , one end of the capacitor 43 can be connected to one end of the coil 11 . When the relay is electrically connected to the external control circuit 41 , as long as one end of the capacitor 43 can be electrically connected to the control circuit 41 , no special limitation is made here.

In some other embodiments, the capacitor 43 is connected in parallel with the coil 11. When the relay is electrically connected to an external control circuit 41, the capacitor 43 can be connected to the control circuit and connected in parallel with the coil 11.

When the relay is in working state, interference signals of different frequencies from the external load circuit will propagate to the control circuit 41, causing the control circuit 41 to carry AC interference signals of different frequencies. Since the capacitor 43 has the characteristics of blocking direct current and passing alternating current, these AC interference signals can be derived through the capacitor 43, so it can also play a shielding role. Therefore, no matter one end of the capacitor 43 is grounded or the capacitor 43 is connected in parallel with the coil 11, the interference signal can be derived.

In addition, the frequency range of the interference signal derived by the capacitor 43 is related to the specifications of the capacitor 43. The specifications of the capacitor 43 can be understood as capacitance. The smaller the specifications of the capacitor 43, the easier it is to derive interference signals of lower frequencies, and the larger the specifications, the easier it is to derive interference signals of higher frequencies, and the larger the specifications, the larger the frequency range of the interference signal that the capacitor 43 can derive. In the embodiment of the present disclosure, a capacitor of appropriate specifications can be selected according to the frequency range of the interference signal, so that the interference signal conducted from the load circuit can be derived, and then the interference signal with different frequencies can be significantly reduced and shielded. At the same time, when the relay is working, the capacitor 43 is actually electrically connected to the control circuit 41, so as not to directly absorb or shield the signal in the external load circuit, and ensure the normal operation of the load circuit.

In some embodiments, as shown in FIGS. 8 to 11 , the relay further includes a first connector 51, a second connector 52, and a third connector 53, which are identical in structure to the first connector 51, the second connector 52, and the third connector 53 described in the above embodiments, and are not described in detail herein. The first connector 51, the second connector 52, and the third connector 53 are used to connect the capacitor 43 to the coil 11.

As shown in FIGS. 8 to 10 , the first connector 51 is conductive and is provided on the coil frame 12. The first connector 51 has a first end and a second end. The first end is used to connect to one pole of the power supply of the external control circuit 41, and the second end is used to connect to one end of the capacitor 43. The second connector 52 is conductive and is provided on the coil frame 12. The second connector 52 has a third end and a fourth end. The third end is connected to the second end of the first connector 51, and the fourth end is connected to one end of the coil 11. The other end of the coil 11 is used to connect to the other pole of the power supply of the external control circuit 41, so that the coil 11 forms a loop when it is electrically connected to the external control circuit 41.

In some embodiments, as shown in FIG. 10 , the first lead pin 511 is in a sheet shape and is used to connect to the control circuit 41. The conductive column 512 is located at one end of the first lead pin 511 and is perpendicular to the first lead pin 511. The conductive column 512 and the first lead pin 511 can be integrally formed. The conductive column 512 is used to electrically connect to one end of the capacitor 43. In some embodiments, the width of the conductive column 512 is less than the width of the first lead pin 511. The width of the first lead pin 511. Referring to FIG9 , the width of the conductive column 512 refers to the dimension of the conductive column 512 along the second horizontal direction Y, and the width of the first lead pin 511 refers to the dimension of the first lead pin 511 along the second horizontal direction Y. Setting the width of the conductive column 512 to be smaller than the width of the first lead pin 511 facilitates wiring and saves space and materials. Among them, the portion of the first lead pin 511 extending out of the first flange portion 121 is the first end of the first connector 51, which is used to connect to the control circuit 41, and the portion of the conductive column 512 extending out of the first flange portion 121 is the second end of the first connector 51, which is used to connect to one end of the capacitor 43.

In some embodiments, as shown in FIG. 30 , the second end of the first connector 51 is connected to one end of the capacitor 43 , and the other end of the capacitor 43 is grounded.

Thus, as shown in FIGS. 28 to 30 , when the relay is in working state, the first lead pin 511 and the second lead pin 531 are connected to the control circuit 41. Assuming that the second lead pin 531 is connected to the positive pole of the power supply of the control circuit 41, the current sequentially flows through the second lead pin 531 of the third connector 53, the winding post 532, the coil 11, the third connection portion 523 of the second connector 52, the second connection portion 522, the first connection portion 521, the conductive post 512 of the first connector 51, and then flows back to the negative pole of the power supply of the control circuit 41 through the first lead pin 511 of the first connector 51. For the capacitor 43, the current sequentially flows through the second lead pin 531 of the third connector 53, the winding post 532, the coil 11, the third connection portion 523 of the second connector 52, the second connection portion 522, the first connection portion 521 (or flows from the first connection portion 521 to the conductive post 512 of the first connector 51), and the capacitor 43.

After the interference signal of the load circuit is transmitted to the control circuit 41, the interference signal flows into one end of the capacitor 43 and is conducted out through the capacitor 43. Therefore, interference signals of different frequencies can be eliminated from the control circuit 41, ensuring the stability of the control circuit 41 and ensuring that the relay can work normally.

As shown in Figures 22 to 24, in some embodiments, the relay may further include a yoke seat 6 and a lead-out piece 55. The coil frame 12 is placed on the yoke seat 6, one end of the lead-out piece is connected to the side wall of the yoke seat 6, and the other end is connected to the other end of the capacitor 43 to derive the interference signal absorbed by the capacitor 43. The structure and function of the yoke seat 6 in the above embodiment are the same, and will not be repeated here.

In some embodiments, as shown in Figure 12, the lead-out member 55 has a first lead-out portion 551, a second lead-out portion 552 and a third lead-out portion 553 connected in sequence, and the first lead-out portion 551 and the third lead-out portion 553 are located on opposite sides of the second lead-out portion 552, so that the lead-out member 55 is roughly in a "Z" shape. The lead-out member 55 can be integrally formed. The first lead-out portion 551 is used to be fixedly connected to the yoke iron seat 6, and the third lead-out portion 553 is used to be connected to the capacitor 43. In some embodiments, the third lead-out portion 553 of the lead-out member 55 is connected to the capacitor 43 to realize the conduction of the interference signal flowing through the capacitor to the yoke iron seat 6, thereby realizing the grounding of the other end of the capacitor 43.

As shown in FIG. 30 , FIG. 31 and FIG. 32 , the relay of the embodiment of the present disclosure further includes a circuit board 54 (PCB for short), and the capacitor 43 is arranged on the circuit board 54. The circuit board 54 has a first through hole 541, a second through hole 542 and a third through hole 543, and the first connecting member The second end of 51 (conductive column 512) is passed through the first through hole 541 and extends out of the circuit board 54, the third end of the second connecting member 52 (first connecting portion 521) is passed through the second through hole 542 and extends out of the circuit board 54, and the third lead-out portion 553 of the lead-out member 55 is passed through the third through hole 543 and extends out of the circuit board 54.

Specifically, the capacitor 43 can be fixed on the same surface of the circuit board 54 by welding, and the welding can be soldering. Of course, the capacitor 43 can also be fixed by other connection methods such as screw connection and bonding, which are not particularly limited here.

As shown in FIG. 29 , the capacitor 43 is located on the surface of the circuit board 54 on the side away from the coil frame 12. The first through hole 541 of the circuit board 54 corresponds to the conductive column 512 of the first connector 51, so that the conductive column 512 is inserted into the first through hole 541 and extends out of the first through hole 541. The second through hole 542 corresponds to the first connecting portion 521 of the second connector 52, so that the first connecting portion 521 is inserted into the second through hole 542 and extends out of the second through hole 542. The third through hole 543 corresponds to the third lead-out portion 553 of the third connector 53, so that the third lead-out portion 553 is inserted into the third through hole 543 and extends out of the third through hole 543. The capacitor 43 is located between the first through hole 541 and the third through hole 543, so as to be connected to the conductive column 512 of the first connector 51 and the third lead-out portion 553 of the lead-out member 55, respectively.

By providing the circuit board 54 , the capacitors 43 can be integrated into one module (for example, when there are multiple capacitors 43 ), which makes the structure compact and simplifies installation.

In some embodiments, the coil 11 has an input end and an output end, and when the relay is working, the capacitor 43 is located downstream of the output end in the control circuit 41. That is, the current in the control circuit 41 first flows through the coil 11, and then flows through the capacitor 43.

Of course, in some other embodiments, the capacitor 43 may also be located upstream of the input end of the coil 11 in the control circuit 41 , that is, the current in the control circuit 41 is first divided and flows through the capacitor 43 , and then flows through the coil 11 .

In some embodiments, the number of capacitors 43 may be one or more, and those skilled in the art may select one according to the frequency range of the interference signal in actual situations, and no special limitation is made here.

In summary, in the embodiment of the present disclosure, when the relay is working, the coil 11 is connected to the external control circuit 41, and the capacitor 43 is also electrically connected to the control circuit 41, and is not connected in series with the coil 11. The capacitor 43 can significantly reduce and shield interference signals with different frequencies, ensure the stability of the external control circuit 41, and ensure the normal operation of the relay. At the same time, when the relay is working, the capacitor 43 is actually electrically connected to the control circuit 41, so as not to directly absorb or shield the signal in the external load circuit, ensuring the normal operation of the load circuit.

As shown in FIG33 , an embodiment of the present disclosure further provides a control device, including a control circuit 41 and a relay. The relay includes a coil 11 and a capacitor 43. The coil 11 is electrically connected to the control circuit 41, the capacitor 43 is connected to the coil 11, and the capacitor 43 and the coil 11 are not connected in series in the control circuit 41.

As shown in FIG33 , the control circuit 41 has a power supply, a resistor 44 (which may be an electronic component), a switch and a wire, and the coil 11 and the resistor 42 are connected in series in the control circuit 41 to form a current loop. In some embodiments, one end of the capacitor 43 is connected to the control circuit 41, and the other end is grounded. In other embodiments, the capacitor 43 is connected in parallel to the control circuit 41, that is, the capacitor 43 is connected in parallel with at least one of the coil 11 and the resistor 42.

In the control device of the embodiment of the present disclosure, the control circuit 41 is electrically connected to the relay, and the capacitor 43 can significantly reduce and shield interference signals with different frequencies, ensure the stability of the control circuit 41, and ensure the normal operation of the relay. At the same time, when the relay is working, the capacitor 43 is actually electrically connected to the control circuit 41, so as not to directly absorb or shield the signal in the external load circuit, ensuring the normal operation of the load circuit.

As shown in FIG34 , an embodiment of the present disclosure further provides a control circuit module 4 for controlling an electronic device. The control circuit module 4 includes a control circuit 41 and a capacitor 43. The control circuit 41 is used to be electrically connected to the electronic device. The capacitor 43 is electrically connected to the control circuit 41, and when the control circuit 41 is electrically connected to the electronic device, the capacitor 43 is not connected in series with the electronic device.

Specifically, the control circuit 41 has a power supply, a resistor 44 (which can be an electronic component), a switch and a wire, and can form a current loop. In the embodiment of the present disclosure, the control circuit 41 has two connection terminals for the electronic device to be connected to the control circuit 41, which is connected in series with the resistor 42, and one end of the capacitor 43 can be connected to any point in the control circuit 41, and the other end of the capacitor 43 is grounded, or the capacitor 43 is connected in parallel with the resistor 42, or when the control circuit 41 is electrically connected to the electronic device, the capacitor 43 is connected in parallel with the electronic device, and no special limitation is made here.

A capacitor 43 is provided in the control circuit module 41 in the embodiment of the present disclosure. When the control circuit 41 is connected to the electronic device, it can shield interference signals of different frequencies transmitted from the external load circuit to the control circuit 41, thereby ensuring the normal operation of the relay.

Electronic devices may also be other components that are interfered with by interference signals from external load circuits, such as contactors, circuit breakers, etc. Applying the control circuit module of the embodiments of the present disclosure to electronic devices can shield the influence of external interference signals on the electronic devices and ensure the normal operation of the electronic devices.

It can be understood that the various embodiments/implementations provided by the present invention can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

In the embodiments of the invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the invention can be understood according to the specific circumstances.

In the description of the embodiments of the invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the embodiments of the invention.

In the description of this specification, the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features described are not necessarily the same as the embodiment or example. The features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the invention embodiments, and are not intended to limit the invention embodiments. For those skilled in the art, the invention embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the invention embodiments shall be included in the protection scope of the invention embodiments.

Claims

A relay, comprising:

A coil configured to be electrically connected to an external control circuit;

An anti-interference element is connected to the coil, and when the coil is used to be electrically connected to the external control circuit, the coil and the anti-interference element are connected in series in the external control circuit.
The relay according to claim 1, wherein the anti-interference element is at least one of a magnetic bead and an inductor.
The relay according to claim 1, further comprising:

a coil frame on which the coil is wound;

A first connecting member, having conductivity and disposed on the coil frame, wherein the first connecting member has a first end and a second end, wherein the first end is configured to be connected to one pole of a power source of the external control circuit, and the second end is connected to one end of the anti-interference element;

A second connecting member, which is conductive and provided on the coil frame, has a third end and a fourth end, wherein the third end is connected to the other end of the anti-interference element, and the fourth end is connected to one end of the coil;

The other end of the coil is configured to be connected to the other pole of the power supply of the external control circuit, so that the coil and the anti-interference element form a loop when electrically connected to the external control circuit.
The relay according to claim 3, further comprising:

The third connecting member is conductive and is arranged on the coil frame. The third connecting member has a fifth end and a sixth end. The fifth end is connected to the other end of the coil, and the sixth end is configured to be connected to the other pole of the power supply of the external control circuit.
The relay according to claim 3, wherein:

The coil frame comprises a winding portion, a first flange portion and a second flange portion, wherein the first flange portion and the second flange portion are located on both sides of the winding portion and protrude outwards;

The first connector comprises a first lead pin and a conductive column, the conductive column is vertically connected to one end of the first lead pin, a portion of the first connector is embedded in the first flange portion, the first lead pin extends in a vertical direction and extends from the bottom of the first flange portion, and the conductive column extends in a first horizontal direction and extends from a side surface of the first flange portion;

The portion of the first lead-out pin extending out of the first flange portion is the first end of the first connector, and the portion of the conductive column extending out of the first flange portion is the second end of the first connector.
The relay according to claim 5, wherein the second connecting member is U-shaped, and has a first connecting portion, a second connecting portion, and a third connecting portion connected in sequence, at least the second connecting portion is embedded in the first flange portion of the coil frame, and the first connecting portion and the third connecting portion both extend along the first horizontal direction and extend from the side of the first flange portion;

The portion of the first connection portion extending out of the first flange portion is the third end of the second connection member, and the portion of the third connection portion extending out of the first flange portion is the fourth end of the second connection member.
The relay according to claim 6, wherein the first connecting member and the second connecting member are located on the same side of the first flange portion, and the first connecting portion, the third connecting portion and the conductive column are spaced apart in the second horizontal direction.
The relay according to claim 7, wherein a groove is provided at an edge of the first flange portion corresponding to the third connecting portion, and the third connecting portion extends from the groove;

The third connection portion has toughness. When the third connection portion is connected to one end of the coil, the third connection portion is configured as Can be bent to extend along the vertical direction.
The relay according to any one of claims 3 to 8 further includes a circuit board, the anti-interference element is arranged on the circuit board, the circuit board has a first through hole and a second through hole, the second end of the first connecting member is passed through the first through hole and extends out of the circuit board, and the third end of the second connecting member is passed through the second through hole and extends out of the circuit board.
The relay according to any one of claims 1 to 3, wherein the number of the anti-interference elements is one or more.
A control device, comprising:

control circuits; and

Relays, including coils and anti-interference components;

Wherein, the anti-interference element and the coil are connected in series in the control circuit.
The control device according to claim 11, wherein the anti-interference element is at least one of a magnetic bead and an inductor.
A control circuit module for controlling an electronic device, the control circuit module comprising:

A control circuit, used for being electrically connected to the electronic device;

The anti-interference element is electrically connected to the control circuit and is used to be connected in series with the electronic device.
The control circuit module according to claim 13, wherein the electronic device is a relay, and the control circuit is used to be electrically connected to a coil of the relay.