relay

Abstract

This application relates to a relay, including a relay body, a heat-conducting element, and a temperature monitoring unit. The relay body includes a main stationary contact. The heat-conducting element is connected to the main stationary contact. At least a portion of the temperature monitoring unit is thermally connected to the heat-conducting element. The relay of this application can prevent the relay body from burning out, thus improving the safety of the relay in use.

Description

Technical Field

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

[0002] A relay is an electrical control component that, when a change in the input quantity reaches a specified requirement, causes a predetermined step change in the controlled quantity in the electrical output circuit. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current, thus playing roles in automatic adjustment, safety protection, and circuit switching in circuits. It is used in household appliances, automobiles, industrial control, power systems, communication devices, and other fields.

[0003] A high-voltage DC relay is a type of relay that includes a coil, a moving iron core, a stationary iron core, active contacts, main stationary contacts, and a yoke assembly. Specifically, when the coil is energized, the moving iron core attracts the stationary iron core, causing the active contacts to make contact with the main stationary contacts. This connects the active contacts, main stationary contacts, and the high-voltage electrical equipment, allowing a small current in the coil to control the flow of a large current on one side of the main stationary contacts.

[0004] However, during operation, if the relay temperature gets too high, it can burn out, creating a safety hazard. Utility Model Content

[0005] Therefore, it is necessary to provide a relay that addresses the problem that when the relay temperature is too high during operation, it may burn out, thus creating a safety hazard.

[0006] A relay, comprising:

[0007] The relay body includes the main stationary contact;

[0008] The heat-conducting component is connected to the main stationary contact component;

[0009] Temperature monitoring unit, at least part of the temperature monitoring unit is thermally connected to the heat-conducting component.

[0010] In some embodiments, the temperature monitoring unit includes a contact head and two leads, one end of each of the two leads being connected to the contact head, and the contact head being in contact with a heat-conducting element.

[0011] In some embodiments, the two leads are a first lead and a second lead, which are arranged opposite to each other and spaced apart.

[0012] The first lead-out section includes a first lead-out segment and a second lead-out segment whose extension directions intersect; the second lead-out section includes a third lead-out segment and a fourth lead-out segment whose extension directions intersect.

[0013] The first and third lead-out sections are positioned opposite each other, and the second and fourth lead-out sections are positioned opposite each other, with the distance between the second and fourth lead-out sections gradually increasing from the contact head to the lead-out section.

[0014] In some embodiments, the heat-conducting component has a first groove, and at least a portion of the temperature monitoring unit is disposed within the first groove; and / or,

[0015] The material of the heat-conducting component is an insulating material; and / or,

[0016] The temperature monitoring unit is a thermistor.

[0017] In some embodiments, the relay includes a first connector, at least a portion of which is located between the heat-conducting element and the temperature monitoring unit.

[0018] In some embodiments, the temperature monitoring unit includes a contact head and two leads. A hollow portion is provided on the upper side of the first connector, and the hollow portion passes through the first connector in the direction from the first connector to the heat-conducting component. The contact head is disposed in the hollow portion, and the hollow portion is in contact with the heat-conducting component.

[0019] In some embodiments, the relay further includes two snap-fit ​​units disposed within the cutout portion. The two snap-fit ​​units are located on opposite sides of the contact head and both abut against the contact head.

[0020] In some embodiments, the snap-fit ​​unit includes a snap-fit ​​body and a protrusion connected together. The protrusion is disposed between the snap-fit ​​body and the contact head, and is located at the end of the snap-fit ​​body away from the heat-conducting element. The protrusion abuts against the contact head.

[0021] In some embodiments, the protrusions of the two snap-fit ​​units are a first protrusion and a second protrusion, respectively. The first protrusion includes a first guide surface facing the second protrusion, and the second protrusion includes a second guide surface facing the first protrusion. The distance between the first guide surface and the second guide surface gradually increases from the contact head to the heat-conducting element; and / or,

[0022] The outer circumferential surface of the contact head is curved, and the curved surface abuts against the protrusion.

[0023] In some embodiments, the snap-fit ​​unit is an elastic element.

[0024] In some embodiments, a second groove is provided on the side of the first connector away from the heat-conducting component, one end of the second groove is connected to the hollow portion, and both leads are located in the second groove.

[0025] In some embodiments, the second groove includes a first sub-groove and two second sub-grooves, both of which are located on the side of the first sub-groove away from the hollowed-out portion and are connected to the first sub-groove.

[0026] Along the direction from one of the two leads to the other, the two second sub-grooves are arranged opposite each other, and the distance between the two second sub-grooves gradually increases from the end of the second sub-grooves closer to the contact head to the end farther away from the contact head.

[0027] In some embodiments, the relay includes a circuit board, and the temperature monitoring unit is electrically connected to the circuit board.

[0028] In some embodiments, the heat-conducting element is located on the side of the relay body away from the circuit board; and / or,

[0029] The temperature monitoring unit includes a contact head and two leads, the ends of which are away from the contact head are electrically connected to the circuit board.

[0030] In some embodiments, the relay includes a second connector, through which the temperature monitoring unit is electrically connected to the circuit board.

[0031] In some embodiments, at least a portion of the second connector is located between the heat-conducting element and the circuit board.

[0032] In some embodiments, the second connector includes a sub-conductive part and a sub-insulating part, the sub-insulating part being sleeved on the outside of the sub-conductive part, and the temperature monitoring unit and the circuit board being electrically connected through the sub-conductive part.

[0033] In some embodiments, the relay includes a first connector, at least a portion of which is located between the heat-conducting element and the temperature monitoring unit, and the first connector is connected to a sub-insulation portion.

[0034] In some embodiments, the material of the first connector is an insulating material; and / or,

[0035] The first connector and the sub-insulator are an integral structure.

[0036] In some embodiments, the relay body further includes an insulating cover and a yoke plate, the insulating cover and the yoke plate together forming a receiving cavity, and the heat-conducting element is located on the side of the insulating cover away from the yoke plate.

[0037] In some embodiments, the main static contact includes a first sub-part and a second sub-part connected together, an insulating cover is provided with a through hole, the first sub-part passes through the through hole, and the second sub-part is located on the side of the insulating cover facing the heat conduction element.

[0038] In some embodiments, the temperature monitoring unit is used to be electrically connected to the control component;

[0039] One of the two leads is configured as an output terminal and the other as an input terminal. When the relay is in the on state, the input terminal has a first voltage and the output terminal has a second voltage. The voltage difference between the first voltage and the second voltage is a first difference value. The control component is configured to determine the temperature of the lead based on the acquired first difference value.

[0040] In some embodiments, the number of relay bodies is multiple, and the main stationary contacts of multiple relay bodies are all connected to the same heat-conducting element; and / or,

[0041] The relay includes a housing assembly, and there are multiple relay bodies, all of which are located within the housing assembly.

[0042] The aforementioned relay includes a relay body, a heat-conducting component, and a temperature monitoring unit. The relay body includes a main stationary contact. The heat-conducting component is connected to the main stationary contact. At least a portion of the temperature monitoring unit is thermally connected to the heat-conducting component.

[0043] The relay of this application has a heat-conducting element connected to the main stationary contact. At least a portion of the temperature monitoring unit is thermally connected to the heat-conducting element. Therefore, when the relay is operating, the main stationary contact generates heat, and the heat-conducting element, connected to the main stationary contact, can quickly and effectively transfer this heat to the temperature monitoring unit. Because at least a portion of the temperature monitoring unit is thermally connected to the heat-conducting element, the temperature monitoring unit can accurately sense the temperature changes of the main stationary contact, thereby reflecting the operating temperature of the relay body. This can prevent the relay body from burning out and improve the safety of relay operation.

[0044] Furthermore, since the relay includes a first connector, at least a portion of which is located between the heat-conducting element and the temperature monitoring unit, it provides stable mechanical support for the temperature monitoring unit, ensuring that it remains in a fixed position within the relay and will not shift or shake due to external forces such as vibration or impact. This guarantees good contact between the temperature monitoring unit and the heat-conducting element, thereby ensuring the accuracy of temperature monitoring.

[0045] Furthermore, since the first connector has a hollowed-out portion on its upper side, the hollowed-out portion extends through the first connector along the direction from the first connector to the heat-conducting component; the contact head is located within the hollowed-out portion, and the hollowed-out portion contacts the heat-conducting component. The snap-fit ​​unit can limit the contact head in the direction of gravity. At the same time, since the snap-fit ​​unit is an elastic component, the snap-fit ​​units on both sides of the contact head have a certain degree of elasticity. When the contact head is snapped in, it will deform to a certain extent. After being snapped in, the contact head is not easy to fall out, and can maintain contact with the heat-conducting component.

[0046] Because the first connector has a second groove on the side facing away from the heat-conducting component, and one end of the second groove is connected to the hollowed-out portion, both leads are located in the second groove. Adhesive can be applied inside the second groove, thereby limiting the leads in various directions and further ensuring their stability. Simultaneously, applying adhesive inside the second groove increases the insulation withstand voltage between the high-voltage main static contact and the low-voltage leads.

[0047] Furthermore, since the relay includes a circuit board, and the temperature monitoring unit is electrically connected to the circuit board, the resistance change of the temperature monitoring unit can be monitored by the voltage change of the circuit board, and thus the temperature of the main static contact of the relay body can be monitored by the voltage change of the circuit board.

[0048] Furthermore, since the temperature monitoring unit is used for electrical connection with the control component, one of the two leads is configured as an output terminal and the other as an input terminal. When the relay is in the conducting state, the input terminal has a first voltage and the output terminal has a second voltage. The voltage difference between the first voltage and the second voltage is a first difference value. The control component is configured to: determine the temperature of the lead based on the acquired first difference value; and determine the temperature of the main stationary contact based on the second voltage of the output terminal. This can prevent the relay body from burning out and improve the safety of relay use. Attached Figure Description

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

[0050] Figure 2 for Figure 1 Exploded view of the relay.

[0051] Figure 3 This is a schematic diagram of the structure of a relay without its housing assembly in one embodiment of this application.

[0052] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0053] Figure 5 This is a schematic diagram of another structure of the relay in one embodiment of this application, with the housing assembly removed.

[0054] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0055] Figure 7 for Figure 5 A magnified view of the main view in the image.

[0056] Figure 8 for Figure 3 A magnified view of a section at point B in the middle.

[0057] Figure 9 for Figure 3 A magnified view of the main view in the image.

[0058] Figure 10 for Figure 1 Top view of the relay.

[0059] Figure 11 for Figure 10 A cross-sectional view of the intermediate relay along the AA direction.

[0060] Explanation of reference numerals in the attached figures:

[0061] 10. Relay;

[0062] 1. Relay body; 2. Heat-conducting component; 3. Temperature monitoring unit; 4. First connector; 5. Snap-fit ​​unit; 6. Circuit board; 7. Second connector; 8. Housing assembly;

[0063] 11. Main stationary contact; 12. Insulating cover; 13. Yoke plate;

[0064] 111. First sub-section; 112. Second sub-section;

[0065] 31. Contact head; 32. Lead-out section;

[0066] 321. First lead-out section; 322. Second lead-out section;

[0067] 3211. First introduction paragraph; 3212. Second introduction paragraph;

[0068] 3221. Third introduction paragraph; 3222. Fourth introduction paragraph;

[0069] 41. Hollowed-out section; 42. Second groove;

[0070] 421. First sub-groove; 422. Second sub-groove;

[0071] 51. Snap-fit ​​body; 52. Protrusion;

[0072] 521. First protrusion; 522. Second protrusion;

[0073] 5211, First guide surface; 5221, Second guide surface. Detailed Implementation

[0074] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0075] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0076] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0077] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0078] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0079] See Figure 1 , Figure 2 and Figure 3 As shown. One embodiment of this application provides a relay 10, including a relay body 1, a heat-conducting element 2, and a temperature monitoring unit 3. The relay body 1 includes a main stationary contact 11. The heat-conducting element 2 is connected to the main stationary contact 11. At least a portion of the temperature monitoring unit 3 is thermally connected to the heat-conducting element 2. The temperature monitoring unit 3 is a sensor resistor whose resistance value changes with temperature.

[0080] Thus, when the relay 10 is working, the main stationary contact 11 generates heat. The heat-conducting element 2, connected to the main stationary contact 11, can quickly and effectively transfer the heat of the main stationary contact 11 to the temperature monitoring unit 3. Since at least part of the temperature monitoring unit 3 is thermally connected to the heat-conducting element 2, the temperature monitoring unit 3 can accurately sense the temperature change of the main stationary contact 11, thereby reflecting the operating temperature status of the relay body 1. This can prevent the relay body 1 from burning out and improve the safety of the relay 10.

[0081] Furthermore, through heat conduction between the relay body 1, the heat-conducting component 2, and the temperature monitoring unit 3, and by accurately sensing the temperature change of the main stationary contact 11 through the temperature monitoring unit 3, the operating temperature of the relay body 1 can be monitored in real time. Once the temperature reaches the threshold, the relay body 1 can stop working, preventing further heat accumulation and thus eliminating the possibility of the relay 10 burning out due to high temperature. This effectively improves the safety of the relay 10 under complex operating conditions and ensures the reliable operation of the relay 10.

[0082] Furthermore, the heat-conducting component 2 is connected to the main static contact 11. At least part of the temperature monitoring unit 3 is thermally connected to the heat-conducting component 2. That is, in this application, the heat-conducting component 2 connects the main static contact 11 to the temperature monitoring unit 3 for heat conduction. Thus, the heat-conducting component 2 not only serves the function of heat conduction but also provides an installation location for the temperature monitoring unit 3.

[0083] In some embodiments, see Figure 4As shown, the temperature monitoring unit 3 includes a contact head 31 and two leads 32. One end of each lead 32 is connected to the contact head 31, and the contact head 31 is in contact with the heat-conducting component 2.

[0084] In this way, the contact head 31 is in direct contact with the heat-conducting component 2, providing a direct path for heat transfer. This allows the heat transferred from the main stationary contact component 11 to the contact head 31 efficiently, thereby enabling the temperature monitoring unit 3 to accurately sense the temperature change of the main stationary contact component 11.

[0085] In some embodiments, the two leads 32 are a first lead 321 and a second lead 322, which are opposite to each other and spaced apart. The first lead 321 includes a first lead segment 3211 and a second lead segment 3212 with intersecting extension directions, and the second lead 322 includes a third lead segment 3221 and a fourth lead segment 3222 with intersecting extension directions. The first lead segment 3211 and the third lead segment 3221 are opposite to each other, the second lead segment 3212 and the fourth lead segment 3222 are opposite to each other, and the distance between the second lead segment 3212 and the fourth lead segment 3222 gradually increases from the contact head 31 to the lead 32.

[0086] It should be noted that the direction from the contact head 31 to the lead-out part 32 is... Figure 4 The X direction in the equation.

[0087] Thus, the first lead-out section 3211 and the second lead-out section 3212 in the first lead-out section 321 intersect in their extension directions, and the third lead-out section 3221 and the fourth lead-out section 3222 in the second lead-out section 322 intersect in their extension directions. This allows for flexible layout based on the internal spatial structure of the relay 10, better adapting to the internal space of relays 10 of different shapes and sizes, and improving space utilization.

[0088] In some embodiments, the heat-conducting component 2 is provided with a first groove, and at least a portion of the temperature monitoring unit 3 is disposed in the first groove.

[0089] Thus, on the one hand, the temperature monitoring unit 3 can be limited by the first groove to prevent it from moving during the operation of the relay body 1 and affecting its normal operation. This ensures stable operation of the temperature monitoring unit 3, thereby improving the stability and reliability of the relay 10. On the other hand, the temperature monitoring unit 3 can be configured as a heat-conducting structure. By being located within the first groove, the entire temperature monitoring unit 3 can sense the temperature changes of the heat-conducting component 2, improving the accuracy of temperature sensing and preventing the relay body 1 from burning out. This further enhances the safety of the relay 10.

[0090] In some embodiments, the material of the heat-conducting element 2 is an insulating material.

[0091] In this way, when the heat-conducting component 2 comes into contact with the main stationary contact 11 of the relay body 1, it will only sense the temperature of the main stationary contact 11 and will not make an electrical connection with the main stationary contact 11. Thus, when the heat-conducting component 2 transmits temperature to the temperature monitoring unit 3, it can avoid the electrical connection between the temperature monitoring unit 3 and the main stationary contact 11, thereby avoiding a short circuit between the temperature monitoring unit 3 and the main stationary contact 11, and thus improving the safety and reliability of the relay 10 during operation.

[0092] For example, the material of the heat-conducting element 2 is ceramic or glass. Of course, the material of the heat-conducting element 2 can also be other materials with thermal conductivity and insulation functions, and the material of the heat-conducting element 2 is not limited here.

[0093] In some embodiments, the temperature monitoring unit 3 is a thermistor.

[0094] Thus, the thermistor is extremely sensitive to temperature changes and can accurately sense temperature changes transmitted from the heat-conducting component 2. When the temperature of the main stationary contact 11 changes slightly, the resistance of the thermistor will change significantly accordingly, thereby accurately monitoring the operating temperature of the relay 10.

[0095] In some embodiments, see Figure 5 As shown, the relay 10 includes a first connector 4, at least a portion of which is located between the heat-conducting element 2 and the temperature monitoring unit 3.

[0096] Thus, the first connector 4 provides stable mechanical support for the temperature monitoring unit 3, ensuring that it remains fixed inside the relay 10 and will not shift or shake due to external forces such as vibration or impact. This ensures good contact between the temperature monitoring unit 3 and the heat-conducting component 2, thereby guaranteeing the accuracy of temperature monitoring.

[0097] In some embodiments, see Figure 6 and Figure 7 As shown, the temperature monitoring unit 3 includes a contact head 31 and two lead-out portions 32. The upper side of the first connector 4 is provided with a hollow portion 41, which penetrates the first connector 4 along the direction from the first connector 4 to the heat-conducting component 2. The contact head 31 is located inside the hollow portion 41, and the hollow portion 41 is in contact with the heat-conducting component 2.

[0098] Thus, the cutout 41 allows the contact head 31 to contact the heat-conducting element 2 more directly, reducing obstacles in the heat transfer path and allowing the heat from the main stationary contact 11 to be transferred to the contact head 31 more efficiently through the heat-conducting element 2. Since the contact head 31 is a key part of the temperature monitoring unit 3 for sensing temperature, this design allows temperature monitoring elements such as thermistors to sense temperature changes more quickly and accurately, thereby improving the accuracy and timeliness of temperature measurement.

[0099] Meanwhile, the hollowed-out portion 41 extends along the direction from the first connector 4 to the heat-conducting component 2, forming a relatively independent heat conduction channel, reducing heat loss to the surrounding environment. This helps ensure that the temperature measured by the contact head 31 can accurately reflect the temperature of the heat-conducting component 2, thereby accurately reflecting the temperature status of the main static contact 11 and avoiding measurement errors caused by heat loss during the transfer process.

[0100] In some embodiments, the relay 10 further includes two snap-fit ​​units 5, which are disposed within the cutout portion 41; the two snap-fit ​​units 5 are disposed on opposite sides of the contact head 31 and both abut against the contact head 31.

[0101] Thus, since the two snap-fit ​​units 5 are located on opposite sides of the contact head 31 and both abut against the contact head 31, the contact head 31 can be abutted by the two snap-fit ​​units 5, thereby abutting the temperature monitoring unit 3. This can improve the stability of the temperature monitoring unit 3 on the first connector 4, thereby improving the working stability and reliability of the relay 10.

[0102] In addition, the snap-fit ​​unit 5 can limit the contact head 31 in the direction of gravity. The snap-fit ​​units 5 on both sides of the contact head 31 have a certain elasticity. When the contact head 31 is snapped in, it will deform to a certain extent. After it is snapped in, the contact head 31 is not easy to come out and can maintain contact with the heat-conducting component 2.

[0103] In some embodiments, the snap-fit ​​unit 5 includes a snap-fit ​​body 51 and a protrusion 52 connected together. The protrusion 52 is disposed between the snap-fit ​​body 51 and the contact head 31, and is disposed at the end of the snap-fit ​​body 51 away from the heat-conducting member 2. The protrusion 52 abuts against the contact head 31.

[0104] In this way, the protrusion 52 abuts against the contact head 31, which can clamp the contact head 31 from both sides. Compared with a single fixing method, this double-sided abutment can better restrict the movement of the contact head 31 in all directions, greatly enhance the stability of the temperature monitoring unit 3 on the first connector 4, and thus improve the stability and reliability of the relay 10.

[0105] In some embodiments, the protrusions 52 of the two snap-fit ​​units 5 are a first protrusion 521 and a second protrusion 522, respectively. The first protrusion 521 includes a first guide surface 5211 facing the second protrusion 522, and the second protrusion 522 includes a second guide surface 5221 facing the first protrusion 521. The distance between the first guide surface 5211 and the second guide surface 5221 gradually increases from the contact head 31 to the heat-conducting member 2.

[0106] Thus, since the distance between the first guide surface 5211 and the second guide surface 5221 gradually increases from the contact head 31 to the heat-conducting element 2, the contact head 31 can be easily inserted, and the contact head 31 is not easy to come out after it is inserted.

[0107] In some embodiments, the outer peripheral surface of the contact head 31 is an arc surface, which abuts against the protrusion 52.

[0108] Thus, since the outer peripheral surface of the contact head 31 is an arc surface, the contact head 31 can slide between the two snap-fit ​​units 5 through the arc surface, which facilitates the assembly of the contact head 31 and the snap-fit ​​unit 5.

[0109] In some embodiments, the snap-fit ​​unit 5 is an elastic element.

[0110] Thus, the elastic element has a certain elastic deformation capacity. After the contact head 31 is inserted, it may have a certain deformation space. Therefore, during installation, the elastic element can be deformed by external force, making it relatively easy to snap the component into the designated position. For example, when the temperature monitoring unit 3 is snapped into the corresponding position of the relay 10 through the elastic snap-fit ​​unit 5, there is no need to use complicated tools or perform cumbersome operations. Simply align the component in position, and the elasticity of the elastic element will automatically snap it in place, greatly improving installation efficiency.

[0111] In some embodiments, the first connector 4 is provided with a second groove 42 on the side opposite to the heat conductor 2, one end of the second groove 42 is connected to the hollow part 41, and both leads 32 are located in the second groove 42.

[0112] Thus, the second groove 42 provides a clear installation position and orientation for the lead-out portion 32, facilitating accurate placement of the lead-out portion 32 in the predetermined position during the assembly of the relay 10, thereby improving assembly efficiency and product consistency. Simultaneously, by housing the lead-out portion 32 within the second groove 42, the space on the side of the first connector 4 away from the heat-conducting component 2 is utilized efficiently, resulting in a more compact internal spatial layout for the relay 10 and improving the internal space utilization rate.

[0113] Furthermore, adhesive can be applied into the second groove 42 to limit the lead-out portion 32 disposed within the second groove 42 in various directions, thereby further ensuring the stability of the lead-out portion 32. Simultaneously, the adhesive application into the second groove 42 increases the insulation withstand voltage between the high-voltage main static contact 11 and the low-voltage lead-out portion 32.

[0114] In some embodiments, the second groove 42 includes a first sub-groove 421 and two second sub-grooves 422. The two second sub-grooves 422 are both located on the side of the first sub-groove 421 away from the hollowed-out portion 41 and are both connected to the first sub-groove 421. The two second sub-grooves 422 are arranged opposite to each other along the direction from one of the two leads 32 to the other, and the distance between the two second sub-grooves 422 gradually increases from the end of the second sub-groove 422 closer to the contact head 31 to the end away from the contact head 31.

[0115] Thus, the distance between the two second sub-grooves 422 gradually increases from the end of the second sub-grooves 422 near the contact head 31 to the end away from the contact head 31, which corresponds to the direction in which the lead-out portion 32 extends outward from the contact head 31. Near the contact head 31, the distance between the lead-out portions 32 is small. As they extend away from the contact head 31, the gradually increasing distance provides more space for the lead-out portions 32, preventing them from squeezing each other or becoming too concentrated during extension. This helps protect the lead-out portions 32 and optimizes space utilization.

[0116] Meanwhile, the lead-out portion 32 provided in the first sub-groove 421 and the two second sub-groove 422 can be limited in various directions, thereby further ensuring the stability of the lead-out portion 32.

[0117] Meanwhile, the structure of the first sub-groove 421 and the two second sub-grooves 422 provides clear guidance for the installation of the lead-out part 32. During the assembly of the relay 10, workers can more easily and quickly place the lead-out part 32 into the corresponding first sub-groove 421 and the two second sub-grooves 422, which improves assembly efficiency and also helps to ensure the consistency of assembly quality.

[0118] In some embodiments, the relay 10 includes a circuit board 6, and the temperature monitoring unit 3 is electrically connected to the circuit board 6.

[0119] It should be noted that the temperature monitoring unit 3 has two pins, namely two leads 32, one as an input terminal and the other as an output terminal. After the rated voltage is input, the resistance of the temperature monitoring unit 3 increases due to the temperature increase at the leads, so the voltage of the temperature monitoring unit 3 itself increases and the voltage at the output terminal decreases. At this time, since the temperature monitoring unit 3 is electrically connected to the circuit board 6, the voltage corresponding to the corresponding temperature can be calibrated on the circuit board 6. Thus, the resistance change of the temperature monitoring unit 3 can be monitored by the voltage change of the circuit board 6, and the temperature of the main stationary contact 11 of the relay body 1 can be monitored by the voltage change of the circuit board 6.

[0120] Understandably, when the voltage on circuit board 6 reaches the predetermined voltage, the temperature of the main stationary contact 11 of the relay body 1 reaches a critical temperature. If the relay body 1 continues to operate, the temperature of the main stationary contact 11 will continue to rise, causing the relay body 1 to burn out. Therefore, when the voltage on circuit board 6 reaches the predetermined voltage, the circuit of the coil in the relay body 1 can be interrupted by circuit board 6, which can prevent the relay 10 from burning out and improve the safety of the relay 10.

[0121] In some embodiments, the heat-conducting element 2 is disposed on the side of the relay body 1 away from the circuit board 6.

[0122] Thus, the main stationary contact 11 of the relay body 1 generates heat during operation. By placing the heat-conducting element 2 on the side away from the circuit board 6 and connecting it to the main stationary contact 11, the heat generated by the main stationary contact 11 can be transferred to the heat-conducting element 2 more directly and efficiently. This avoids interference from the circuit board 6 or other components during heat transfer, ensuring a smooth heat conduction path and enabling the temperature monitoring unit 3 to more accurately sense the temperature change of the main stationary contact 11 through the heat-conducting element 2.

[0123] In some embodiments, the temperature monitoring unit 3 includes a contact head 31 and two leads 32, the ends of the two leads 32 away from the contact head 31 being electrically connected to the circuit board 6.

[0124] In this way, the contact head 31 comes into contact with the heat-conducting component 2, enabling it to sense in real time the temperature changes of the main stationary contact 11 of the relay 10 transmitted by the heat-conducting component 2. Because the contact head 31 is in close contact with the heat-conducting component 2, the heat transfer efficiency is high, allowing the temperature of the contact head 31 to quickly follow the temperature changes of the main stationary contact 11, thus providing a basis for accurate temperature monitoring.

[0125] Furthermore, the two leads 32 serve as channels for electrical connection, transmitting the temperature changes sensed by the contact head 31 to the circuit board 6. Specifically, when the temperature of the contact head 31 changes, the resistance value of the temperature monitoring unit 3 changes accordingly, thereby monitoring the resistance change of the temperature monitoring unit 3 through the voltage change of the circuit board 6, and further monitoring the temperature of the main stationary contact 11 of the relay 10 through the voltage change of the circuit board 6.

[0126] In some embodiments, see Figure 5 , Figure 8 and Figure 9 As shown, the relay 10 includes a second connector 7, and the temperature monitoring unit 3 and the circuit board 6 are electrically connected through the second connector 7.

[0127] Thus, the second connector 7 establishes a stable electrical connection channel between the temperature monitoring unit 3 and the circuit board 6. Specifically, the relay 10 may be subjected to external forces such as vibration and impact during operation. Direct connection may lead to loosening or disconnection. However, the second connector 7, with its reasonable structural design and reliable fixing method, ensures a tight connection between the two, guaranteeing stable transmission of temperature monitoring data to the circuit board 6. Furthermore, in actual relay 10 designs, the positions and spacing of the temperature monitoring unit 3 and the circuit board 6 may vary. The second connector 7 can be customized according to specific design requirements, flexibly adjusting the length, shape, and angle of the connection to adapt to different spatial layouts, enabling precise connection between the temperature monitoring unit 3 and the circuit board 6.

[0128] In some embodiments, at least a portion of the second connector 7 is located between the heat-conducting element 2 and the circuit board 6.

[0129] Thus, by positioning at least a portion of the second connector 7 between the heat-conducting component 2 and the circuit board 6, an effective connection between the temperature monitoring unit 3 and the circuit board 6 can be achieved within a limited space, improving space utilization and facilitating the miniaturization design of the relay 10. Simultaneously, the second connector 7 provides support and fixation between the heat-conducting component 2 and the circuit board 6, allowing for a better connection between the heat-conducting component 2, the temperature monitoring unit 3, and the circuit board 6, forming a relatively stable structure. This enhances the overall stability of the internal structure of the relay 10 and reduces the risk of failure due to loose components.

[0130] In some embodiments, the second connector 7 includes a sub-conductive part and a sub-insulating part, the sub-insulating part being sleeved on the outside of the sub-conductive part, and the temperature monitoring unit 3 and the circuit board 6 being electrically connected through the sub-conductive part.

[0131] Thus, within the complex electrical environment of the relay 10, the sub-insulation part effectively isolates the sub-conductive part from other surrounding components, preventing accidental contact between the sub-conductive part and other conductive parts that could cause a short circuit. For example, when the relay 10 is subjected to external forces such as vibration or impact, without the protection of the sub-insulation part, the sub-conductive part may come into contact with nearby metal parts, leading to a short circuit, affecting the normal operation of the relay 10, or even damaging the equipment.

[0132] In addition, the sub-insulation part can protect the sub-conductive part from external environmental factors such as moisture, dust, and chemicals, which can extend the service life of the sub-conductive part, improve the overall durability of the second connector 7, and enable the relay 10 to operate stably in various complex working environments.

[0133] In some embodiments, the relay 10 includes a first connector 4, at least a portion of which is located between the heat-conducting element 2 and the temperature monitoring unit 3, and the first connector 4 is connected to the sub-insulation portion.

[0134] Thus, the first connector 4 is connected to the sub-insulation part, which helps to connect the temperature monitoring unit 3, the second connector 7, and the heat-conducting part 2 into a stable whole structure. This connection method can enhance the stability of the entire internal structure of the relay 10, reduce the risk of failure caused by loose parts, and especially when the relay 10 is subjected to vibration or impact, it can effectively protect the connection relationship between the components and ensure the normal operation of the relay 10.

[0135] In some embodiments, the material of the first connector 4 is an insulating material.

[0136] Thus, the relay 10 contains multiple electrical components with complex electrical connections. Using insulating material as the first connector 4 prevents short-circuit faults and ensures the normal operation of the relay 10. Furthermore, during the use of the relay 10, if the first connector 4 is made of a non-insulating material, a malfunction in the relay 10 or a decrease in its insulation performance may cause the temperature monitoring unit 3 or other related components to become energized, increasing the risk of electric shock to operators. However, using insulating material for the first connector 4 effectively reduces this risk and ensures personnel safety.

[0137] In some embodiments, the first connector 4 and the sub-insulator are an integral structure.

[0138] Thus, the integrated structure makes the connection between the first connector 4 and the sub-insulation part more robust, eliminating gaps or weak points caused by splicing or assembly. During the operation of the relay 10, when subjected to mechanical vibration and impact, this integrated structure can better maintain its integrity and stability, ensuring that the relative positional relationship between the components remains unchanged, thereby guaranteeing the stable performance of the relay 10.

[0139] In some embodiments, see Figure 10 and Figure 11 As shown, the relay body 1 also includes an insulating cover 12 and a yoke plate 13. The insulating cover 12 and the yoke plate 13 together form a receiving cavity, and the heat-conducting element 2 is located on the side of the insulating cover 12 away from the yoke plate 13.

[0140] Thus, the insulating cover 12, as an insulating material, can isolate the conductive components inside the relay 10 from the external environment, preventing them from contacting surrounding metal components or other conductive bodies, thereby preventing electrical short circuits and helping to ensure the normal operation of the relay 10 and reduce the risk of failure caused by short circuits.

[0141] At the same time, the accommodating cavity provides a relatively enclosed space for other components inside the relay 10, such as the coil, which can prevent dust, debris and other impurities from entering and avoid these impurities from contaminating or damaging the internal components. It can also prevent external forces from directly impacting the internal components to a certain extent, thus playing a protective role.

[0142] Furthermore, the yoke plate 13 provides a low-resistivity circuit for the magnetic field generated by the coil of the relay 10. This makes the magnetic field more concentrated and stronger, improves the electromagnetic conversion efficiency of the relay 10, and enables the iron core to respond more sensitively to changes in the coil's magnetic field, achieving fast and accurate operation.

[0143] In some embodiments, the main static contact 11 includes a first sub-part 111 and a second sub-part 112 connected together. The insulating cover 12 is provided with a through hole, the first sub-part 111 passes through the through hole, and the second sub-part 112 is located on the side of the insulating cover 12 facing the heat conduction member 2.

[0144] Thus, the first sub-part 111, passing through the through hole, can accurately connect the main stationary contact 11 to other parts within the relay body 1, reducing problems such as increased resistance and overheating caused by unstable connections or poor contact. The through-hole design on the insulating cover 12, while enabling the connection of the main stationary contact 11, utilizes the insulating properties of the insulating cover 12 to isolate the main stationary contact 11 from other parts of the relay body 1, preventing short circuits with surrounding conductive components.

[0145] Furthermore, the second sub-part 112 is located on the side of the insulating cover 12 facing the heat conduction element 2, allowing the heat generated by the main stationary contact 11 to be transferred more directly to the heat conduction element 2. Since the main stationary contact 11 carries current during operation and inevitably generates heat, placing the second sub-part 112 in this position shortens the heat transfer path and improves heat conduction efficiency. The design of the second sub-part 112 being close to the heat conduction element 2 also facilitates the temperature monitoring unit 3 in more accurately sensing temperature changes in the main stationary contact 11.

[0146] In some embodiments, the temperature monitoring unit 3 is used to be electrically connected to the control component; one of the two leads 32 is configured as an output terminal and the other is configured as an input terminal. When the relay 10 is in the on state, the input terminal has a first voltage and the output terminal has a second voltage. The voltage difference between the first voltage and the second voltage is a first difference value. The control component is configured to determine the temperature of the lead 32 based on the acquired first difference value.

[0147] It should be noted that the temperature monitoring unit 3 has two pins, namely two leads 32, one as an input terminal and the other as an output terminal. After the rated voltage is input, the resistance of the temperature monitoring unit 3 increases due to the temperature increase of the leads, so the voltage of the temperature monitoring unit 3 itself increases and the voltage of the output terminal decreases. At this time, since the control component is configured to determine the temperature of the leads 32 based on the first difference obtained, the temperature of the main stationary contact 11 can be determined by the control component based on the second voltage of the output terminal.

[0148] In this way, the control component compares and judges the temperature based on the preset temperature threshold and the temperature corresponding to the first difference. Once the temperature is found to be too high, measures can be taken in time to prevent the relay body 1 from burning out and to improve the safety of the relay 10.

[0149] In some embodiments, there are multiple relay bodies 1, and the main static contacts 11 of multiple relay bodies 1 are all connected to the same heat-conducting element 2.

[0150] It should be noted that the relay 10 of this application includes at least one relay body 1. If the number of relay bodies 1 is one, the relay 10 of this application is an independent relay 10. If the number of relay bodies 1 is multiple, the relay 10 of this application is a combined relay. A combined relay is an electrical switching device capable of multi-channel control, composed of multiple relay bodies 1, and can simultaneously control multiple circuits. The relay body 1 serves as the working body of the combined relay, and consists of a drive mechanism, an actuating mechanism, and a contact mechanism. The drive mechanism activates the contacts to close or open, thereby controlling the circuit's on / off state. It is important to note that individual relay bodies 1 do not have a housing; multiple relay bodies 1 share a single housing assembly 8, thus forming a combined relay.

[0151] A twin relay is a device consisting of two independent relay bodies 1, which perform the function of the relay body 1 by being activated by a control signal. Each relay body 1 has its own independent control circuit and contact mechanism. In the circuit, when the control signal is energized, both relay bodies 1 will operate to realize the function of the relay body 1. Based on the above description, the twin relay also belongs to the combined relay of this application. Here, the specific number of relay bodies 1 in the combined relay will not be elaborated.

[0152] Thus, since the heat from the main static contacts 11 of multiple relays 10 is concentrated on the same heat-conducting element 2, only one or a few temperature monitoring units 3 need to be installed on the heat-conducting element 2 to accurately monitor the overall temperature of multiple relays 10, simplifying the design and layout of the temperature monitoring system and reducing costs. Furthermore, based on the temperature information monitored on the heat-conducting element 2, unified temperature control can be performed on multiple relay bodies 1. For example, when the temperature is too high, measures can be taken simultaneously to protect all relay bodies 1, improving the safety of the relays 10.

[0153] In some embodiments, the relay 10 includes a housing assembly 8, and the number of relay bodies 1 is multiple, with the multiple relay bodies 1 and the heat-conducting element 2 all located within the housing assembly 8.

[0154] Thus, the housing assembly 8 serves as the frame structure of the relay 10. On the one hand, it supports and fixes the relay body 1 and the heat-conducting component 2 within the relay 10, thereby ensuring the normal operation of the relay body 1 and the heat-conducting component 2. On the other hand, it protects the relay body 1 and the heat-conducting component 2 from external damage, further ensuring the normal operation of the relay 10.

[0155] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0156] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay characterized by comprising: include: The relay body includes the main stationary contact; A heat-conducting component is connected to the main stationary contact component; A temperature monitoring unit, at least a portion of which is thermally connected to the heat-conducting element.

2. The relay according to claim 1, characterized in that The temperature monitoring unit includes a contact head and two leads, one end of each of the two leads being connected to the contact head, and the contact head being in contact with the heat-conducting component.

3. The relay according to claim 2, characterized in that The two leads are a first lead and a second lead, which are opposite to each other and spaced apart. The first lead-out portion includes a first lead-out segment and a second lead-out segment whose extension directions intersect; the second lead-out portion includes a third lead-out segment and a fourth lead-out segment whose extension directions intersect. The first lead-out section and the third lead-out section are arranged opposite to each other, the second lead-out section and the fourth lead-out section are arranged opposite to each other, and the distance between the second lead-out section and the fourth lead-out section gradually increases from the contact head to the lead-out portion.

4. A relay according to any one of claims 1-3, characterised in that The heat-conducting component is provided with a first groove, and at least a portion of the temperature monitoring unit is disposed within the first groove; and / or The material of the heat-conducting component is an insulating material; and / or, The temperature monitoring unit is a thermistor.

5. The relay according to any one of claims 1 to 3, characterized in that The relay includes a first connector, at least a portion of which is located between the heat-conducting element and the temperature monitoring unit.

6. The relay of claim 5, wherein The temperature monitoring unit includes a contact head and two leads. The upper side of the first connector has a hollowed-out portion, which extends through the first connector in the direction from the first connector to the heat-conducting component. The contact head is located inside the hollowed-out portion and is in contact with the heat-conducting component.

7. The relay according to claim 6, characterized in that The relay also includes two snap-fit ​​units, which are disposed within the hollow portion. The two snap-fit ​​units are located on opposite sides of the contact head and abut against the contact head.

8. The relay according to claim 7, characterized in that The snap-fit ​​unit includes a snap-fit ​​body and a protrusion connected together. The protrusion is located between the snap-fit ​​body and the contact head, and is located at the end of the snap-fit ​​body away from the heat-conducting element. The protrusion abuts against the contact head.

9. The relay according to claim 8, characterized in that, The protrusions of the two snap-fit ​​units are a first protrusion and a second protrusion, respectively. The first protrusion includes a first guide surface facing the second protrusion, and the second protrusion includes a second guide surface facing the first protrusion. The distance between the first guide surface and the second guide surface gradually increases from the contact head to the heat-conducting element; and / or, The outer peripheral surface of the contact head is an arc surface, and the arc surface abuts against the protrusion.

10. The relay of claim 7, wherein The snap-fit ​​unit is an elastic element.

11. The relay of claim 6, wherein The first connector has a second groove on the side away from the heat-conducting component. One end of the second groove is connected to the hollow part, and both leads are located in the second groove.

12. The relay of claim 11, wherein, The second groove includes a first sub-groove and two second sub-grooves. The two second sub-grooves are both located on the side of the first sub-groove away from the hollowed-out portion and are both connected to the first sub-groove. Along the direction from one of the two leads to the other, the two second sub-grooves are arranged opposite each other, and the distance between the two second sub-grooves gradually increases from the end of the second sub-grooves closer to the contact head to the end farther away from the contact head.

13. The relay according to any one of claims 1 to 3, characterized in that The relay includes a circuit board, and the temperature monitoring unit is electrically connected to the circuit board.

14. The relay of claim 13, wherein, The heat-conducting component is located on the side of the relay body opposite to the circuit board; and / or, The temperature monitoring unit includes a contact head and two leads, the ends of the two leads away from the contact head being electrically connected to the circuit board.

15. The relay of claim 13, wherein, The relay includes a second connector, and the temperature monitoring unit is electrically connected to the circuit board via the second connector.

16. The relay of claim 15, wherein, At least a portion of the second connector is located between the heat-conducting element and the circuit board.

17. The relay of claim 15, wherein, The second connector includes a sub-conductive part and a sub-insulating part. The sub-insulating part is sleeved on the outside of the sub-conductive part, and the temperature monitoring unit is electrically connected to the circuit board through the sub-conductive part.

18. The relay of claim 17, wherein, The relay includes a first connector, at least a portion of which is located between the heat-conducting element and the temperature monitoring unit, and the first connector is connected to the sub-insulation portion.

19. The relay of claim 18, wherein, The first connector is made of an insulating material; and / or, The first connector and the sub-insulator are an integral structure.

20. The relay according to any one of claims 1 to 3, characterized in that The relay body also includes an insulating cover and a yoke plate, the insulating cover and the yoke plate together forming a receiving cavity, and the heat-conducting element is located on the side of the insulating cover away from the yoke plate.

21. The relay of claim 20, wherein, The main static contact includes a first sub-part and a second sub-part connected together. The insulating cover is provided with a through hole, the first sub-part passing through the through hole, and the second sub-part located on the side of the insulating cover facing the heat-conducting component.

22. The relay according to claim 2 or 3, characterized in that The temperature monitoring unit is used for electrical connection with the control components; One of the two leads is configured as an output terminal and the other as an input terminal. When the relay is in the on state, the input terminal has a first voltage and the output terminal has a second voltage. The voltage difference between the first voltage and the second voltage is a first difference value. The control component is configured to determine the temperature of the lead based on the acquired first difference value.

23. The relay according to any one of claims 1 to 3, characterized in that The number of relay bodies is multiple, and the main static contacts of multiple relay bodies are all connected to the same heat-conducting component; and / or, The relay includes a housing assembly, and there are multiple relay bodies, all of which are located within the housing assembly.

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