Contact device, relay and electric equipment

Abstract

The utility model provides a contact device, a relay and electric equipment. Relates to the technical field of electronic devices. The contact device comprises a contact body, a contact piece and a connecting piece. The contact element is connected with an external circuit; one of the contact piece and the contact body is a copper piece, and the other one of the contact piece and the contact body is an aluminum piece; the connecting piece is arranged between the contact body and the contact piece. The contact body and the contact piece are connected into a whole through the connecting piece, so that the problems of corrosion of a primary battery and difficult combination caused by direct contact of the contact piece and the contact body are avoided, the conductivity between the contact piece and the contact body is ensured, the connection strength of the contact piece and the contact body is improved, the service life of the contact device is prolonged, and the service life of the contact device is prolonged. The connection resistance between the contact device and the busbar is reduced, and the use performance of the contact device is improved.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to a contact device, a relay, and an electrical appliance. Background Technology

[0002] A relay is an electrical switching device used to control the on / off state of a circuit. It activates internal mechanical or solid-state components by an input signal (usually current or voltage), thereby opening or closing the circuit.

[0003] In related technologies, relays include contacts. The contacts of a relay are the components used to connect or disconnect circuits. The contacts are responsible for the actual current conduction. The contacts are used to connect to external circuits via busbars. Currently, some relay contacts are made of copper-aluminum composite.

[0004] However, existing relay contacts have the problem of poor performance. Utility Model Content

[0005] This application provides a contact device, relay, and electrical equipment that avoids the problems of galvanic corrosion reaction and connection difficulties caused by direct contact between the contact element and the contact body, improves the connection strength between the contact element and the contact body, reduces the connection resistance between the contact device and the busbar, and improves the performance of the contact device.

[0006] In a first aspect, embodiments of this application provide a contact device, comprising:

[0007] Contact body;

[0008] Contact element, used for connection to external circuit; one of the contact element and the contact body is made of copper, and the other of the contact element and the contact body is made of aluminum;

[0009] A connector is disposed between the contact body and the contact element.

[0010] In some embodiments of this application, the materials of the connectors include silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, or manganese.

[0011] In some embodiments of this application, the materials of the connector include silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, and manganese, and the mass ratio of silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, and manganese is (0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100).

[0012] In some embodiments of this application, the material of the connector includes nickel, silver, or manganese.

[0013] In some embodiments of this application, the contact element is made of aluminum; the contact body is made of copper.

[0014] In some embodiments of this application, the contact body includes a first body portion and a first mounting portion connected to each other, and the first mounting portion is provided on the side of the first body portion near the connector.

[0015] In some embodiments of this application, one of the first mounting portion and the connector is provided with a first protrusion; the other of the first mounting portion and the connector is provided with a first groove.

[0016] The first protrusion is embedded in the first groove.

[0017] In some embodiments of this application, a first protrusion is provided on the side of the first mounting portion near the connector.

[0018] A first groove is provided on the side of the connector near the contact body.

[0019] In some embodiments of this application, the first protrusion includes a first protrusion segment and a second protrusion segment connected to each other; the first protrusion segment is disposed on the side of the second protrusion segment near the connector.

[0020] The first groove includes a first sub-groove and a second sub-groove disposed along the depth direction of the first groove; the first sub-groove and the second sub-groove are connected to each other, and the first sub-groove is disposed on the side of the second sub-groove away from the contact body.

[0021] The first protruding section is embedded in the first sub-groove, and the second protruding section is embedded in the second sub-groove.

[0022] In some embodiments of this application, along the direction from the contact body to the contact element, the orthographic projection of the second protrusion on the plane where the contact element is located covers the orthographic projection of the first protrusion on the plane where the contact element is located.

[0023] In some embodiments of this application, the number of first protrusions is at least two, and at least two first protrusions are spaced apart along a direction perpendicular to the contact body to the contact element.

[0024] In some embodiments of this application, along the direction from the contact body to the contact element, the orthographic projection of the second sub-groove onto the plane where the contact element is located covers the orthographic projection of the first sub-groove onto the plane where the contact element is located.

[0025] In some embodiments of this application, the number of first sub-grooves is at least two, and at least two first sub-grooves are spaced apart along a direction perpendicular to the contact body to the contact element.

[0026] In some embodiments of this application, at least two first protrusions are embedded in at least two first sub-grooves in a one-to-one correspondence.

[0027] In some embodiments of this application, the contact member includes a second body portion and a second mounting portion that are connected to each other, and the second body portion is provided on the side of the connector closer to the contact member.

[0028] In some embodiments of this application, a mounting groove is provided on the side of the second mounting portion near the contact body.

[0029] At least some of the connectors are embedded in the mounting groove.

[0030] In some embodiments of this application, one of the connector and the second mounting portion is provided with a second protrusion; the other of the connector and the second mounting portion is provided with a second groove.

[0031] The second protrusion is embedded in the second groove.

[0032] In some embodiments of this application, a second protrusion is provided on the side of the connector near the second mounting portion.

[0033] The second mounting part is provided with a second groove; the second groove is located on the side of the mounting part groove opposite to the connector, and the second groove and the mounting part groove are connected.

[0034] In some embodiments of this application, the connector includes a connecting body and a second protrusion, the second protrusion being disposed on the side of the connecting body near the second mounting portion; the second protrusion being embedded in the groove of the mounting portion.

[0035] In some embodiments of this application, a second protrusion is provided on the side of the connector near the contact member.

[0036] A second groove is also provided on the side of the second mounting part near the contact body; the bottom of the second groove is connected to the groove of the mounting part.

[0037] In some embodiments of this application, the number of second protrusions is at least two, and at least two second protrusions are spaced apart along a direction perpendicular to the contact body to the contact element.

[0038] In some embodiments of this application, the number of second grooves is at least two, and at least two second grooves are spaced apart along a direction perpendicular to the contact body to the contact element.

[0039] In some embodiments of this application, at least two second protrusions are correspondingly embedded in at least two second grooves.

[0040] In some embodiments of this application, the contact device further includes a first welding portion for connecting the first mounting portion and the connector.

[0041] In some embodiments of this application, the first welding part includes a first welding segment, which is located at the opening of the first groove, and the first welding segment connects the second protrusion segment and the connector.

[0042] In some embodiments of this application, the first welding portion includes a second welding segment, which is located at the bottom of the first groove and connects the first protrusion and the connector.

[0043] In some embodiments of this application, the contact device further includes a second welding portion for connecting the contact element and the connector.

[0044] In some embodiments of this application, along the direction from the contact body to the contact element, the orthographic projection of the connector on the plane where the contact element is located covers the orthographic projection of the first mounting portion on the plane where the contact element is located.

[0045] In some embodiments of this application, a first through hole is provided on the contact member along the direction from the contact body to the contact member.

[0046] In some embodiments of this application, a second through hole is provided on the connector along the direction from the contact body to the contact element.

[0047] In some embodiments of this application, the first through hole and the second through hole are connected.

[0048] In some embodiments of this application, the contact element further includes a contact connector, which is disposed on the side of the contact element opposite to the connector.

[0049] In some embodiments of this application, the contact device further includes a positioning element disposed on the side of the contact element away from the connector.

[0050] In some embodiments of this application, the cross-sectional shape of the first body portion includes any one of square, rectangular, polygonal, circular, and elliptical shapes.

[0051] In some embodiments of this application, the cross-sectional shape of the second body portion includes any one of square, rectangular, polygonal, circular, and elliptical shapes.

[0052] Secondly, embodiments of this application provide a relay including the contact device described above.

[0053] Thirdly, embodiments of this application provide an electrical appliance, including:

[0054] Equipment body;

[0055] The circuit is connected to the device body;

[0056] Busbar;

[0057] The relay described above has its contact assembly connected to the circuit via a busbar.

[0058] In some embodiments of this application, the busbar has a third through hole, and the contact connector of the contact device is located in the third through hole.

[0059] In some embodiments of this application, the busbar has a busbar groove, the opening of the busbar groove faces the contact device, and the contact connector of the contact device is located in the busbar groove.

[0060] In some embodiments of this application, the busbar has a first surface and a second surface disposed opposite to each other, with the first surface disposed away from the contact device relative to the second surface.

[0061] The distance between the first surface and the bottom of the busbar groove is A, and A satisfies: 0.5mm≤A≤2mm.

[0062] This application provides a contact device, a relay, and an electrical appliance. The contact device includes a contact body, a contact element, and a connector. The contact element is used to connect to an external circuit; one of the contact element and the contact body is made of copper, and the other is made of aluminum; the connector is disposed between the contact body and the contact element. The contact body and the contact element are connected as a single unit by the connector, avoiding the problems of galvanic corrosion and connection difficulties caused by direct contact between the contact element and the contact body. At the same time, it ensures the conductivity between the contact element and the contact body, improves the connection strength between the contact element and the contact body, extends the service life of the contact device, reduces the connection resistance between the contact device and the busbar, and improves the performance of the contact device. Attached Figure Description

[0063] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0064] Figure 1 Schematic diagram of the contact device and busbar provided in Embodiment 1 of this application Figure 1 ;

[0065] Figure 2 Schematic diagram of the contact device and busbar provided in Embodiment 1 of this application Figure 2 ;

[0066] Figure 3 for Figure 2 A schematic diagram of region a in the middle;

[0067] Figure 4 A schematic diagram illustrating the structure of the contact device provided in this application embodiment when connected to a busbar with a busbar groove. Figure 1 ;

[0068] Figure 5Schematic diagram of the contact device and busbar provided in Embodiment 2 of this application Figure 1 ;

[0069] Figure 6 Schematic diagram of the contact device and busbar provided in Embodiment 2 of this application Figure 2 ;

[0070] Figure 7 for Figure 6 A schematic diagram of region b in the middle;

[0071] Figure 8 A schematic diagram illustrating the structure of the contact device provided in this application embodiment when connected to a busbar with a busbar groove. Figure 2 .

[0072] Explanation of reference numerals in the attached figures:

[0073] 100: Contact body; 110: First body portion; 120: First mounting portion; 130: First protrusion; 131: First protrusion section; 132: Second protrusion section;

[0074] 200: Contact element; 210: Second body part; 220: Second mounting part; 230: Mounting part groove; 240: First through hole;

[0075] 300: Connector; 310: Second protrusion; 320: Second through hole;

[0076] 400: First welding section; 410: First welding segment; 420: Second welding segment; 430: Second welding section;

[0077] 500: Busbar; 510: Third through hole; 520: First side; 530: Second side;

[0078] 600: Contact connector; 610: Positioning component.

[0079] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0080] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0081] In related technologies, a relay is an electrical control device that controls the on / off state of a circuit by inputting an electrical signal. The basic principle of a relay is to use electromagnetic effects or other physical effects to drive a mechanical switch, thereby controlling the circuit. It is commonly used in automatic control systems to achieve automated control and protection of circuits.

[0082] Currently, relay contacts are made of pure copper or copper alloy and are bolted to the busbar of the battery energy distribution unit (a copper busbar). Because copper itself is expensive, the overall cost of the relay contacts is high. Therefore, some researchers have designed the busbar to be made of aluminum. However, if the relay contacts were also made of aluminum, the high resistance of aluminum would not meet the low resistance requirement of the relay.

[0083] Some researchers have designed copper-aluminum composite static contacts. However, these composite contacts suffer from several drawbacks. Firstly, the bonding strength between the copper and aluminum layers in the vertical direction is weak. Secondly, the weld between the top of the aluminum layer and the through-hole of the busbar has low torsional resistance. During long-term use, the difference in thermal expansion coefficients between copper and aluminum can cause the joint to loosen, leading to increased contact resistance, enhanced copper-aluminum galvanic effect, and potential safety hazards. Furthermore, the copper-aluminum connection can cause corrosion due to the potential difference between copper and aluminum, resulting in poor contact, overheating, sparking, and increased resistance.

[0084] In summary, existing relay contacts have the problem of poor performance.

[0085] In view of this, embodiments of this application provide a contact device, a relay, and an electrical appliance. The contact device includes a contact body, a contact element, and a connector. The contact element is used to connect to an external circuit; one of the contact element and the contact body is made of copper, and the other is made of aluminum; the connector is disposed between the contact body and the contact element. The contact body and the contact element are connected as a single unit by the connector, avoiding the problems of galvanic corrosion and connection difficulties caused by direct contact between the contact element and the contact body. Simultaneously, it ensures the conductivity between the contact element and the contact body, improves the connection strength between the contact element and the contact body, extends the service life of the contact device, reduces the connection resistance between the contact device and the busbar, and improves the performance of the contact device.

[0086] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0087] In a first aspect, embodiments of this application provide a relay, including a contact device.

[0088] For example, relays are widely used in automated control systems, power systems, home appliances, automotive electronics, and other fields to provide reliable circuit control functions. The contact device is a key component of the relay, responsible for the opening and closing of the circuit.

[0089] Relays control circuits through contact devices, enabling them to control high-current circuits under low-current signals.

[0090] The contact mechanism of a relay will be described in detail below.

[0091] Secondly, referring to Figures 1 to 8 As shown, this application embodiment provides a contact device, including:

[0092] Contact body 100;

[0093] Contact 200 is used to connect to an external circuit; one of contact 200 and contact body 100 is made of copper, and the other of contact 200 and contact body 100 is made of aluminum.

[0094] Connector 300 is disposed between contact body 100 and contact 200.

[0095] For example, refer to Figure 1 and Figure 5 As shown, the contact body 100 is the main structural part of the entire contact device, responsible for carrying and transmitting current. The contact element 200 is used to connect to an external circuit to ensure effective current transmission.

[0096] The connector 300 is used to connect the contact body 100 and the contact 200, and the connector 300 can reduce the electrode potential difference between the contact body 100 and the contact 200.

[0097] The contact body 100 and the contact element 200 are connected into one unit by the connector 300, which avoids the problem of galvanic corrosion reaction and bonding difficulties caused by direct contact between the contact element 200 and the contact body 100, ensures the conductivity between the two parts of the contact element 200 and the contact body 100, improves the connection strength between the contact element 200 and the contact body 100, and extends the service life of the contact device.

[0098] In some embodiments, the contact 200 is made of aluminum; the contact body 100 is made of copper.

[0099] In other embodiments, the contact 200 is made of copper and the contact body 100 is made of aluminum.

[0100] The copper components are made of either copper or copper alloys. The aluminum components are made of either aluminum or aluminum alloys.

[0101] As one possible implementation, the material of the connector 300 includes silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, or manganese.

[0102] For example, silver has high electrical and thermal conductivity, which can significantly reduce resistance and improve current transmission efficiency.

[0103] Gold is corrosion resistant and has electrical conductivity.

[0104] Indium is electrically conductive.

[0105] Titanium is characterized by high strength, corrosion resistance, and light weight.

[0106] Zinc is corrosion resistant.

[0107] Iron has high strength and low cost.

[0108] Cobalt has hardness and wear resistance.

[0109] Nickel's localized corrosion resistance and mechanical properties.

[0110] Molybdenum is electrically conductive.

[0111] Tin is electrically conductive and solderable.

[0112] Beryllium is rigid and has electrical conductivity.

[0113] Manganese can improve the strength and wear resistance of alloys.

[0114] For example, the connector 300 can be a connecting layer. The method for preparing the connector 300 includes any one of machining, electroplating, electroless plating, plasma chemical vapor deposition, and vacuum magnetron sputtering.

[0115] In some embodiments, the material of the connector 300 includes one of silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, and manganese.

[0116] In other embodiments, the material of connector 300 includes any two of silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, and manganese.

[0117] In some other embodiments, the material of connector 300 includes at least two of silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, and manganese.

[0118] As one feasible implementation, the material of the connector 300 includes silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, and manganese, and the mass ratio of silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, and manganese is (0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100).

[0119] For example, by limiting the mass ratio of the material of connector 300 to this range, the proportions of each component can be adjusted to optimize the physical and chemical properties of connector 300, such as electrical conductivity, thermal conductivity, strength, toughness, and corrosion resistance, to meet the requirements.

[0120] Different manufacturing processes for connectors, such as casting, forging, and welding, may have different requirements for material composition. By adjusting the proportions, the material can be made more suitable for specific manufacturing processes.

[0121] As one possible implementation, the material of the connector 300 includes nickel, silver, or manganese.

[0122] For example, when the material of the connector 300 includes nickel, silver, or manganese, the connection strength between the connector 300 and the contact 200, and between the connector 300 and the contact body 100, can be improved. Nickel, silver, and manganese all have corrosion-resistant properties, which can slow down corrosion at the connection points between the connector 300 and the contact 200, and between the connector 300 and the contact body 100.

[0123] As one feasible implementation method, refer to Figures 1 to 3 As shown, the contact body 100 includes a first body portion 110 and a first mounting portion 120 connected to each other. The first mounting portion 120 is provided on the side of the first body portion 110 near the connector 300.

[0124] For example, as a main structural component of the contact device, the first body portion 110 is responsible for carrying and transmitting current. The first body portion 110 provides the basic structural strength and stability of the contact device.

[0125] The first mounting part 120 is located on the side near the connector 300 and is mainly used for fixing and installing with the connector 300.

[0126] For example, the first body part 110 can be a copper pillar or an aluminum pillar.

[0127] In one feasible implementation, one of the first mounting portion 120 and the connector 300 is provided with a first protrusion 130; the other of the first mounting portion 120 and the connector 300 is provided with a first groove.

[0128] The first protrusion 130 is embedded in the first groove.

[0129] For example, by providing a first protrusion 130 on one of the first mounting portion 120 and the connector 300, and providing a corresponding first groove on the other, a tight fit between the first mounting portion 120 and the connector 300 is achieved.

[0130] The design of the first protrusion 130 and the first groove provides a mechanical locking effect, enhancing the strength and stability of the connection between the contact body 100 and the connector 300, and reducing the risk of loosening at the connection between the contact body 100 and the connector 300 due to vibration or thermal expansion.

[0131] As one possible implementation, the first mounting portion 120 is provided with a first protrusion 130 on the side near the connector 300.

[0132] The connector 300 has a first groove on the side near the contact body 100.

[0133] For example, by providing a first protrusion 130 on the first mounting portion 120 and a first groove on the connector 300, the cooperation of the first protrusion 130 and the first groove provides a mechanical locking effect for the contact body 100 and the connector 300, improving the strength and stability of the connection between the contact body 100 and the connector 300. This design can effectively prevent loosening of the contact body 100 and the connector 300 due to vibration or other mechanical stress during use.

[0134] The contact body 100 and the connector 300 are connected by the first protrusion 130 and the first groove, which ensures the precise positioning of the contact body 100 and the connector 300 during installation, improves the accuracy and consistency of assembly, and reduces errors.

[0135] The embedded design of the first protrusion 130 and the first groove effectively prevents relative sliding and rotation between the connector 300 and the first mounting part 120, further improving the reliability of the connection between the contact body 100 and the connector 300.

[0136] As one feasible implementation method, refer to Figure 1 As shown, the first protrusion 130 includes a first protrusion section 131 and a second protrusion section 132 that are connected to each other; the first protrusion section 131 is disposed on the side of the second protrusion section 132 near the connector 300.

[0137] The first groove includes a first sub-groove and a second sub-groove disposed along the depth direction of the first groove; the first sub-groove and the second sub-groove are connected to each other, and the first sub-groove is disposed on the side of the second sub-groove away from the contact body 100.

[0138] The first protruding section 131 is embedded in the first sub-groove, and the second protruding section 132 is embedded in the second sub-groove.

[0139] For example, the first protrusion 131 is located on the side of the second protrusion 132 near the connector 300, and is used to embed into the first sub-groove. The second protrusion 132 is connected to the first protrusion 131 and is used to embed into the second sub-groove.

[0140] The first sub-groove is located on the side of the second sub-groove opposite to the contact body 100, and is used to accommodate the first protruding segment 131. The second sub-groove is located along the depth direction of the groove and is connected to the first sub-groove, and is used to accommodate the second protruding segment 132.

[0141] The design of multiple raised sections and multiple sub-grooves improves the mechanical locking effect of the first mounting part 120 and the connector 300, and enhances the strength and stability of the connection between the first mounting part 120 and the connector 300.

[0142] This design with multiple raised sections and multiple sub-grooves provides multi-level positioning, improving the assembly accuracy and consistency of the first mounting part 120 and the connector 300. This design effectively prevents multi-directional sliding and rotation between the connector 300 and the first mounting part 120, further improving the reliability of the connection between the first mounting part 120 and the connector 300.

[0143] As one feasible implementation, along the direction from the contact body 100 to the contact member 200, the orthographic projection of the second protrusion 132 onto the plane where the contact member 200 is located covers the orthographic projection of the first protrusion 131 onto the plane where the contact member 200 is located.

[0144] The direction from the contact body 100 to the contact element 200 is referenced. Figure 2 The direction shown in the middle Y-shape. The direction perpendicular to the contact body 100 to the contact element 200 is referenced. Figure 2 The direction indicated by X in the middle.

[0145] For example, that is, along the direction from the contact body 100 to the contact element 200, the area of ​​the second protrusion 132 is larger than that of the first protrusion 131, which means that the second protrusion 132 provides a larger contact area. This helps to improve the stability and reliability of the contact and reduce the risk of poor contact.

[0146] In some embodiments, refer to Figure 5 As shown, the number of the first protrusion 130 is one.

[0147] As one feasible implementation method, refer to Figures 1 to 4As shown, there are at least two first protrusions 131, which are spaced apart along a direction perpendicular to the contact body 100 to the contact member 200.

[0148] For example, the plurality of first protrusions 131 provide a larger contact area and more locking points, improving the mechanical strength and stability of the connection between the first mounting portion 120 and the connector 300. The design of the plurality of first protrusions 131 effectively prevents relative rotation and slippage between the connector 300 and the first mounting portion 120, improving the reliability of the connection.

[0149] In addition, the spaced first protrusions 131 can make the connector 300 distribute stress more evenly when under force, reduce local stress concentration, and reduce the risk of material fatigue and damage.

[0150] As one feasible implementation, along the direction from the contact body 100 to the contact member 200, the orthographic projection of the second sub-groove onto the plane where the contact member 200 is located covers the orthographic projection of the first sub-groove onto the plane where the contact member 200 is located.

[0151] For example, the projection of the second sub-groove covers the first sub-groove, which can form a more complex sealing structure, enhance sealing performance, and prevent dust, moisture or other contaminants from entering the contact area.

[0152] Since the projection of the second sub-groove covers the first sub-groove, meaning the second sub-groove has a larger coverage area, the second groove can distribute mechanical stress more evenly and reduce stress concentration by designing a larger coverage area.

[0153] As one possible implementation, the number of first sub-grooves is at least two, and at least two first sub-grooves are spaced apart along a direction perpendicular to the contact body 100 to the contact member 200.

[0154] For example, the engagement of multiple first sub-grooves with multiple first protrusions 131 provides more locking points at the connection between the first mounting portion 120 and the connector 300, thereby improving the mechanical strength and stability of the connection between the first mounting portion 120 and the connector 300. The design of multiple first sub-grooves effectively prevents relative rotation and sliding between the connector 300 and the first mounting portion 120, improving the reliability of the connection.

[0155] In addition, the spaced-out first sub-grooves can make the connector 300 distribute stress more evenly when under force, reduce local stress concentration, and reduce the risk of material fatigue and damage.

[0156] As one possible implementation, at least two first protrusions 131 are embedded in at least two first sub-grooves in a one-to-one correspondence.

[0157] For example, the cooperation of multiple first protrusions 131 with multiple first sub-grooves provides multiple locking points at the connection between the first mounting portion 120 and the connector 300, thereby improving the mechanical strength and stability of the connection between the first mounting portion 120 and the connector 300.

[0158] By designing the first protrusion 131 and the first sub-groove to correspond one-to-one, the precise positioning of the first mounting part 120 and the connector 300 when connected is ensured, thereby improving the accuracy and consistency of the assembly.

[0159] As one feasible implementation method, refer to Figure 1 and Figure 3 As shown, the contact device also includes a first welding part 400, which is used to connect the first mounting part 120 and the connector 300.

[0160] For example, by using a first weld 400 to connect the first mounting portion 120 and the connector 300, this welded connection provides a robust connection capable of withstanding high mechanical stress and vibration. Simultaneously, this welded connection typically has low resistance, contributing to improved current transmission efficiency between the first mounting portion 120 and the connector 300. Furthermore, welding provides good sealing, preventing moisture and contaminants from entering the connection area between the first mounting portion 120 and the connector 300, thus protecting the contact surfaces.

[0161] By setting the first welding part 400, the first mounting part 120 and the connector 300 are welded together, avoiding the problems of inconsistent thermal expansion coefficients, increased resistance, and heat generation caused by the different materials of the first mounting part 120 and the connector 300.

[0162] Among the available welding methods are laser welding, resistance welding, friction stir welding, and electromagnetic pulse welding.

[0163] The first welding section 400 is for solder. The solder can be any one of tin-lead solder, lead-free solder, silver solder, copper solder, aluminum solder, or nickel solder.

[0164] In one feasible implementation, the first welding part 400 includes a first welding section 410 located at the opening of the first groove, and the first welding section 410 connects the second protrusion section 132 and the connector 300.

[0165] For example, the second protrusion 132 and the connector 300 are welded at the first groove opening by the first welding section 410, which improves the mechanical strength and stability of the connection between the second protrusion 132 and the connector 300 and ensures a firm connection between the second protrusion 132 and the connector 300.

[0166] The first weld section 410 can provide a good sealing effect, preventing the influence of the external environment on the connection area between the second protrusion section 132 and the connector 300, such as the intrusion of moisture and contaminants.

[0167] The second protruding section 132 and the connector 300 are connected by the first welded section 410. This welded connection provides a permanent connection and reduces the risk of loosening and poor contact at the connection between the first protruding section 131 and the connector.

[0168] In one feasible implementation, the first welding part 400 includes a second welding section 420, which is located at the bottom of the first groove and connects the first protrusion section 131 and the connector 300.

[0169] For example, the first protrusion 131 and the connector 300 are welded at the bottom of the first groove through the second welding section 420, which improves the mechanical strength and stability of the connection between the first protrusion 131 and the connector 300 and ensures a firm connection between the first protrusion 131 and the connector 300.

[0170] The first protruding section 131 is connected to the connector 300 via the second welding section 420, and the second protruding section 132 is connected to the connector 300 via the first welding section 410. This design provides dual mechanical and electrical connections, enhancing the reliability of the overall connection between the second mounting section 220 and the connector 300.

[0171] Among the available welding methods are laser welding, resistance welding, friction stir welding, and electromagnetic pulse welding.

[0172] In one possible implementation, the contact member 200 includes a second body portion 210 and a second mounting portion 220 that are connected to each other, and the second body portion 210 is provided with the second mounting portion 220 on the side near the connector 300.

[0173] For example, the second body portion 210 serves as the main structural part of the contact member 200, and is responsible for connection with external circuits and current transmission. The second body portion 210 provides the basic structural strength and stability of the contact member 200.

[0174] The second mounting part 220 is located on the side near the connector 300 and is mainly used for fixing and installing with the connector 300.

[0175] As one possible implementation, the second mounting portion 220 is provided with a mounting portion groove 230 on the side near the contact body 100.

[0176] At least a portion of the connector 300 is embedded in the mounting recess 230.

[0177] In some embodiments, refer to Figures 1 to 3 As shown, the connector 300 is fully embedded in the mounting groove 230.

[0178] In other embodiments, reference is made to Figures 5 to 7 As shown, at least a portion of the connector 300 is embedded in the mounting recess 230.

[0179] For example, the second mounting portion 220 has a mounting groove 230 on the side near the contact body 100 for accommodating and securing the connector 300. The connector 300 is embedded in the mounting groove 230, providing an additional mechanical locking effect and improving the strength and stability of the connection between the second mounting portion 220 and the connector 300.

[0180] The design of the mounting groove 230 ensures the precise positioning of the connector 300, improving the accuracy and consistency of the assembly.

[0181] In one possible implementation, one of the connector 300 and the second mounting portion 220 is provided with a second protrusion 310; the other of the connector 300 and the second mounting portion 220 is provided with a second groove.

[0182] The second protrusion 310 is embedded in the second groove.

[0183] For example, between the connector 300 and the second mounting portion 220, one is provided with a second protrusion 310 and the other is provided with a corresponding second groove. The second protrusion 310 is embedded in the second groove to achieve a stable connection between the second mounting portion 220 and the connector 300.

[0184] The engagement of the second protrusion 310 and the second groove provides an additional mechanical locking effect, further enhancing the strength and stability of the connection between the second mounting portion 220 and the connector 300. This embedded design of the second protrusion 310 and the second groove effectively prevents relative sliding and rotation between the connector 300 and the second mounting portion 220, enhancing the reliability of the connection.

[0185] The design of the second protrusion 310 and the second groove ensures precise positioning during installation, improving assembly accuracy and consistency.

[0186] As one possible implementation, the connector 300 is provided with a second protrusion 310 on the side near the second mounting portion 220.

[0187] The second mounting part 220 is provided with a second groove; the second groove is provided on the side of the mounting part groove 230 away from the connector 300, and the second groove and the mounting part groove 230 are connected.

[0188] For example, the second protrusion 310 is disposed on the side of the connector 300 near the contact member 200 for embedding in the second groove of the second mounting portion 220.

[0189] The second groove is provided on the side of the second mounting part 220 near the contact body 100 and communicates with the bottom of the groove 230 of the mounting part.

[0190] The engagement of the second protrusion 310 and the second groove provides an additional mechanical locking effect, enhancing the strength and stability of the connection between the second mounting part 220 and the connector 300. This design of the second protrusion 310 and the second groove ensures precise positioning during installation, improving assembly accuracy and consistency.

[0191] The embedded design of the second protrusion 310 and the second groove effectively prevents relative sliding and rotation between the connector 300 and the second mounting part 220, enhancing the reliability of the connection.

[0192] In another embodiment, a second protrusion 310 is provided on the side of the second mounting portion 220 near the connector 300. The second protrusion 310 is located in the mounting portion groove 230. A second groove is provided on the side of the connector 300 near the second mounting portion. The second protrusion 310 is embedded in the second groove.

[0193] In one feasible implementation, the connector 300 includes a connecting body and a second protrusion 310, the second protrusion 310 being disposed on the side of the connecting body near the second mounting portion 220; the second protrusion 310 is embedded in the mounting portion groove 230. Thus, at least a portion of the connector 300 is embedded in the mounting portion groove 230.

[0194] The engagement between the second protrusion 310 and the mounting groove 230 provides a mechanical lock, enhancing the strength and stability of the connection between the second mounting part 220 and the connector 300. This design of the second protrusion 310 and the mounting groove 230 ensures precise positioning during installation, improving assembly accuracy and consistency.

[0195] In some embodiments, the number of second protrusions 310 is one.

[0196] As one possible implementation, the number of second protrusions 310 is at least two, and at least two second protrusions 310 are spaced apart along a direction perpendicular to the contact body 100 to the contact member 200.

[0197] For example, by providing at least two second protrusions 310 in the connector 300, the multiple second protrusions 310 provide more locking points, thereby improving the mechanical strength and stability of the connection between the second mounting part 220 and the connector 300.

[0198] The design of multiple second protrusions 310 effectively prevents relative rotation and sliding between the connector 300 and the second mounting part 220, improving the reliability of the connection.

[0199] In addition, the spaced second protrusions 310 can make the connector 300 distribute stress more evenly when under force, reduce local stress concentration, and reduce the risk of material fatigue and damage.

[0200] As one possible implementation, the number of second grooves is at least two, and at least two second grooves are arranged at intervals along a direction perpendicular to the contact body 100 to the contact member 200.

[0201] For example, the arrangement of multiple second grooves provides more insertion points, improving the mechanical strength and stability of the connection between the second mounting portion 220 and the connector 300. The design of multiple second grooves effectively prevents relative sliding and rotation between the connector 300 and the second mounting portion 220, further improving the reliability of the connection.

[0202] In addition, the spaced second grooves allow the connector 300 to distribute stress more evenly when under load, reducing local stress concentration and lowering the risk of material fatigue and damage.

[0203] As one possible implementation, at least two second protrusions 310 are correspondingly embedded in at least two second grooves.

[0204] For example, at least two second protrusions 310 are provided on the connector 300, and at least two second grooves are provided on the second mounting portion 220.

[0205] The engagement of multiple second protrusions 310 with multiple second grooves provides multiple locking points, improving the mechanical strength and stability of the connection between the second mounting part 220 and the connector 300. Multiple locking points allow the connector 300 to distribute stress more evenly under load, reducing localized stress concentration and lowering the risk of material fatigue and damage.

[0206] A second protrusion 310 is provided corresponding to a second groove. This one-to-one correspondence design ensures precise positioning during installation and improves the accuracy and consistency of assembly.

[0207] As one possible implementation, the contact device further includes a second welding portion 430 for connecting the contact 200 and the connector 300.

[0208] For example, by using a second weld 430 to connect the second mounting portion 220 and the connector 300, this welded connection provides a robust connection between the second mounting portion 220 and the connector 300, enabling the connection point to withstand higher mechanical stress and vibration. Simultaneously, this welded connection typically has low resistance, contributing to improved current transmission efficiency between the second mounting portion 220 and the connector 300. Furthermore, welding provides good sealing, preventing moisture and contaminants from entering the connection area of ​​the second mounting portion 220 and the connector 300, thus protecting the contact surfaces.

[0209] By setting the second welding part 430, the second mounting part 220 and the connector 300 are welded together, avoiding the problems of inconsistent thermal expansion coefficients, increased resistance, and heat generation caused by the different materials of the second mounting part 220 and the connector 300.

[0210] The second welding section 430 is for solder. The solder can be any one of tin-lead solder, lead-free solder, silver solder, copper solder, aluminum solder, or nickel solder.

[0211] As one feasible implementation, along the direction from the contact body 100 to the contact member 200, the orthographic projection of the connector 300 on the plane where the contact member 200 is located covers the orthographic projection of the first mounting portion 120 on the plane where the contact member 200 is located.

[0212] For example, the orthographic projection of the connector 300 onto the plane containing the contact 200 overlaps with the orthographic projection of the first mounting portion 120. Specifically, along the direction from the contact body 100 to the contact 200, the cross-sectional area of ​​the first mounting portion 120 is larger than the cross-sectional area of ​​the first body portion 110. This means that on a plane perpendicular to the direction from the contact body 100 to the contact 200, the connector 300 completely covers the first mounting portion 120. This design avoids direct contact between the first mounting portion 120 and the second mounting portion 220 of the contact 200, reducing the chance of direct contact between different metals and thus lowering the risk of electrochemical corrosion.

[0213] Electrochemical corrosion may occur when different metals come into direct contact in an electrolyte environment. The possibility of such corrosion can be effectively reduced by preventing direct contact between the first protrusion 130 of the first mounting portion 120 and the second mounting portion 220 of the contact element 200.

[0214] In some embodiments, refer to Figure 6 and Figure 7 As shown, a portion of the connector 300 covers the outer periphery of the first mounting portion 120.

[0215] For example, the connector 300 can be a flat disc.

[0216] As one feasible implementation, a first through hole 240 is provided on the contact member 200 along the direction from the contact body 100 to the contact member 200.

[0217] For example, the first through-hole 240 provides a venting channel for gases generated during the welding process of the second mounting part 220, the second welding part 430, and the connector 300, preventing gas accumulation in the welding area and thus avoiding welding defects such as porosity and inclusions. By effectively venting the gas, the first through-hole 240 helps to form a more uniform and robust weld joint, improving the overall quality and reliability of the weld.

[0218] It is understood that the number of first through holes 240 can be one or more, and the embodiments of this application do not limit the number of first through holes 240.

[0219] As one feasible implementation, a second through hole 320 is provided on the connector 300 along the direction from the contact body 100 to the contact member 200.

[0220] For example, the second through hole 320 provides a venting channel for gases generated during the welding process of the first mounting part 120, the first welding part 400, and the connector 300, preventing gas accumulation in the welding area and thus avoiding welding defects such as porosity and inclusions. By effectively venting the gas, the through hole helps to form a more uniform and robust weld joint, improving the overall quality and reliability of the weld.

[0221] It is understood that the number of second through holes 320 can be one or more, and the embodiments of this application do not limit the number of second through holes 320.

[0222] In one possible implementation, the first through hole 240 and the second through hole 320 are connected.

[0223] For example, a first through hole 240 is provided on the contact member 200, and a second through hole 320 is provided on the connector 300, and the two are connected.

[0224] The interconnected first through-hole 240 and second through-hole 320 design provides a direct and efficient gas venting path, ensuring that gases generated during welding can be rapidly discharged. Effective gas venting reduces the formation of welding defects such as porosity and inclusions, thereby improving the quality and reliability of the weld joint.

[0225] As one possible implementation, the contact 200 also includes a contact connector 600, which is disposed on the side of the contact 200 opposite to the connector 300.

[0226] For example, the contact connector 600 is disposed on the side of the contact 200 opposite to the connector 300, and is typically located outside the contact assembly to facilitate connection to external circuits or devices such as busbar 500.

[0227] Contact connector 600 provides a standardized interface, allowing the contact assembly to be easily connected to busbar 500. Contact connector 600 provides a low-resistance electrical connection, improving current transmission efficiency.

[0228] For example, the contact connector 600 can be a connecting post or a connecting protrusion.

[0229] As one possible implementation, the contact device also includes a positioning element 610, which is disposed on the side of the contact 200 opposite to the connector 300.

[0230] For example, the positioning element 610 is installed on the side of the contact 200 away from the connector 300, and is typically used to ensure the accurate positioning of the contact 200 during assembly.

[0231] The locating element 610 provides additional support and fixation to prevent displacement or rotation of the contact element 200 during use. By providing a clear positioning reference, the locating element 610 helps improve assembly accuracy and consistency, and reduces assembly errors.

[0232] For example, the positioning element 610 can be a positioning post.

[0233] As one feasible implementation method, refer to Figure 1 and Figure 5 As shown, the cross-sectional shape of the first body part 110 includes any one of square, rectangular, polygonal, circular, and elliptical shapes.

[0234] For example, by setting the cross-sectional shape of the first body portion 110 to a variety of cross-sectional shapes, the selection of multiple cross-sectional shapes allows the design to be optimized according to specific application requirements to meet different mechanical and space requirements. By selecting a suitable cross-sectional shape, the mechanical properties, weight, and material utilization efficiency of the contact body 100 can be optimized.

[0235] As one feasible implementation method, refer to Figure 1 and Figure 5 As shown, the cross-sectional shape of the second body part 210 includes any one of square, rectangular, polygonal, circular, and elliptical shapes.

[0236] For example, by setting the cross-sectional shape of the second body portion 210 to a variety of cross-sectional shapes, the selection of multiple cross-sectional shapes allows the design to be optimized according to specific application requirements to meet different mechanical and space requirements. By selecting a suitable cross-sectional shape, the mechanical properties, weight, and material utilization efficiency of the contact member 200 can be optimized.

[0237] Thirdly, embodiments of this application provide an electrical appliance, including:

[0238] Equipment body;

[0239] The circuit is connected to the device body;

[0240] Busbar 500;

[0241] The relay described above has its contact assembly connected to the circuit via bus 500.

[0242] For example, the device body is the core structure of the entire electrical equipment, carrying and protecting the internal components.

[0243] Circuits are responsible for enabling the electrical functions of electrical equipment, including signal processing, power conversion, and control.

[0244] The circuit is connected to the device body to ensure the effective transmission of electrical signals and power.

[0245] Bus 500 is used to centralize and distribute power, providing an efficient power transmission path. Bus 500 connects circuits and relays, ensuring efficient transmission of power and signals.

[0246] Relays are used to control the on / off state of circuits, enabling automated control functions. Relays are connected to the circuit via bus 500 to ensure reliable transmission of control signals.

[0247] In this design, the contact element 200 of the relay's contact device is welded to the busbar 500. This avoids the safety issues caused by loosening at the bolt connection due to material differences, which is a problem in traditional technologies that use bolts to connect the contact device and the busbar 500.

[0248] In some embodiments, the contact 200 is made of aluminum; the contact body 100 is made of copper. The contact 200 is connected to the busbar 500, which is also made of aluminum.

[0249] As one possible implementation, the busbar 500 has a third through hole 510, and the contact connector 600 of the contact device is located in the third through hole 510.

[0250] For example, the third through-hole 510 design allows the contact connector 600 to be embedded in the busbar 500, thereby saving space and simplifying the overall structure. By securing the contact connector 600 in the third through-hole 510, the mechanical stability of the connection can be improved, and displacement due to vibration or mechanical stress can be reduced.

[0251] For example, the contact connector 600 can be welded into the third through hole 510. By welding the contact 200 to an external busbar, the connection strength is high, solving the problems of inconsistent thermal expansion coefficients and increased resistance and heat generation caused by different materials.

[0252] As one feasible implementation method, refer to Figure 4 and Figure 8 As shown, the busbar 500 has a busbar groove, the opening of which faces the contact device, and the contact connector 600 of the contact device is located in the busbar groove.

[0253] For example, a busbar groove is provided on the busbar 500, with the groove opening of the busbar 500 facing the contact device, so that the contact connector 600 can be embedded therein.

[0254] The busbar recess provides a fixed space to accommodate the contact connector 600, preventing displacement or rotation during use. The busbar recess structure provides additional protection for the contact connector 600, reducing the impact of the external environment on the contact 200, such as mechanical damage or contamination. Compared to the conventional threaded connection between the busbar and the contact 200, this application embeds the contact connector 600 into the busbar recess and welds it in, resulting in a higher degree of automation, greater torque, a more secure connection, better resistance consistency, and prevention of loosening.

[0255] Among the available welding methods are laser welding, resistance welding, friction stir welding, and electromagnetic pulse welding.

[0256] As one possible implementation, the busbar 500 has a first surface 520 and a second surface 530 disposed opposite to each other, with the first surface 520 disposed away from the contact device relative to the second surface 530.

[0257] The distance between the first surface 520 and the bottom of the busbar groove is A, and A satisfies: 0.5mm≤A≤2mm.

[0258] For example, the contact connector 600 is welded to the busbar groove. By setting the distance between the first surface 520 and the bottom of the groove of the busbar 500 to 0.5-1.0 mm, the busbar groove structure can provide additional protection for the contact connector 600 and reduce the impact of the external environment on the contact 200, such as mechanical damage or contamination.

[0259] When the distance between the first surface 520 and the bottom of the busbar 500 is set to less than 0.5mm, the distance between the first surface 520 and the bottom of the busbar 500 is too thin. When there are corrosive substances in the outside, it may affect the contact connector 600 and cause damage to the contact connector 600.

[0260] When the distance between the first surface 520 and the bottom of the busbar 500 is set to be greater than 2.0mm, the depth of the busbar groove is small, which is not conducive to the busbar groove accommodating the contact connector 600, and is not conducive to the connection stability between the contact connector 600 and the busbar 500.

[0261] Therefore, in this embodiment of the application, the distance between the first surface 520 and the bottom of the busbar groove is A, and A satisfies: 0.5mm≤A≤2mm.

[0262] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0263] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A contact device, characterized in that, include: Contact body (100); A contact (200) for connecting to an external circuit; one of the contact (200) and the contact body (100) is made of copper, and the other of the contact (200) and the contact body (100) is made of aluminum; A connector (300) is disposed between the contact body (100) and the contact (200).

2. The contact device according to claim 1, characterized in that, The materials of the connector (300) include silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, or manganese.

3. The contact device according to claim 1, characterized in that, The material of the connector (300) includes silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, and manganese, and the mass ratio of silver, gold, indium, titanium, zinc, iron, cobalt, nickel, molybdenum, tin, beryllium, and manganese is (0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100):(0-100).

4. The contact device according to claim 1, characterized in that, The material of the connector (300) includes nickel, silver or manganese.

5. The contact device according to claim 1, characterized in that, The contact element (200) is made of aluminum; the contact body (100) is made of copper.

6. The contact device according to claim 1, characterized in that, The contact body (100) includes a first body part (110) and a first mounting part (120) connected to each other, and the first body part (110) is provided with the first mounting part (120) on the side near the connector (300).

7. The contact device according to claim 6, characterized in that, One of the first mounting portion (120) and the connector (300) is provided with a first protrusion (130); the other of the first mounting portion (120) and the connector (300) is provided with a first groove; The first protrusion (130) is embedded in the first groove.

8. The contact device according to claim 7, characterized in that, The first mounting portion (120) has the first protrusion (130) on the side near the connector (300); The connector (300) has the first groove on the side near the contact body (100).

9. The contact device according to claim 8, characterized in that, The first protrusion (130) includes a first protrusion segment (131) and a second protrusion segment (132) that are connected to each other; the first protrusion segment (131) is disposed on the side of the second protrusion segment (132) near the connector (300); The first groove includes a first sub-groove and a second sub-groove disposed along the depth direction of the first groove; the first sub-groove and the second sub-groove are interconnected, and the first sub-groove is disposed on the side of the second sub-groove opposite to the contact body (100); The first protruding segment (131) is embedded in the first sub-groove, and the second protruding segment (132) is embedded in the second sub-groove.

10. The contact device according to claim 9, characterized in that, Along the direction from the contact body (100) to the contact member (200), the orthographic projection of the second protrusion (132) onto the plane where the contact member (200) is located covers the orthographic projection of the first protrusion (131) onto the plane where the contact member (200) is located.

11. The contact device according to claim 9, characterized in that, The number of the first protrusions (131) is at least two, and at least two of the first protrusions (131) are spaced apart along a direction perpendicular to the contact body (100) to the contact member (200).

12. The contact device according to claim 9, characterized in that, Along the direction from the contact body (100) to the contact member (200), the orthographic projection of the second sub-groove onto the plane where the contact member (200) is located covers the orthographic projection of the first sub-groove onto the plane where the contact member (200) is located.

13. The contact device according to claim 11, characterized in that, The number of the first sub-grooves is at least two, and at least two first sub-grooves are spaced apart along a direction perpendicular to the contact body (100) to the contact member (200).

14. The contact device according to claim 13, characterized in that, At least two of the first protrusions (131) are embedded in at least two of the first sub-grooves in a one-to-one correspondence.

15. The contact device according to any one of claims 1-14, characterized in that, The contact member (200) includes a second body part (210) and a second mounting part (220) connected to each other, and the second body part (210) is provided with the second mounting part (220) on the side near the connector (300).

16. The contact device according to claim 15, characterized in that, The second mounting portion (220) has a mounting groove (230) on the side near the contact body (100); At least a portion of the connector (300) is embedded in the mounting recess (230).

17. The contact device according to claim 16, characterized in that, One of the connector (300) and the second mounting portion (220) is provided with a second protrusion (310); the other of the connector (300) and the second mounting portion (220) is provided with a second groove; The second protrusion (310) is embedded in the second groove.

18. The contact device according to claim 17, characterized in that, The connector (300) has a second protrusion (310) on the side near the second mounting part (220); The second mounting portion (220) is provided with a second groove; the second groove is located on the side of the mounting portion groove (230) away from the connector (300), and the second groove and the mounting portion groove (230) are in communication.

19. The contact device according to claim 16, characterized in that, The connector (300) includes a connecting body and a second protrusion (310), the second protrusion (310) being disposed on the side of the connecting body near the second mounting portion (220); the second protrusion (310) being embedded in the groove (230) of the mounting portion.

20. The contact device according to claim 18, characterized in that, The number of the second protrusions (310) is at least two, and at least two second protrusions (310) are spaced apart along a direction perpendicular to the contact body (100) to the contact member (200).

21. The contact device according to claim 20, characterized in that, The number of the second groove is at least two, and at least two second grooves are arranged at intervals along a direction perpendicular to the contact body (100) to the contact member (200).

22. The contact device according to claim 21, characterized in that, At least two of the second protrusions (310) are respectively embedded in at least two of the second grooves.

23. The contact device according to claim 9, characterized in that, It also includes a first welding part (400) for connecting the first mounting part (120) and the connector (300).

24. The contact device according to claim 23, characterized in that, The first welding part (400) includes a first welding segment (410), which is located at the opening of the first groove and connects the second protruding segment (132) and the connector (300).

25. The contact device according to claim 24, characterized in that, The first welding part (400) includes a second welding section (420), which is located at the bottom of the first groove and connects the first protrusion section (131) and the connector (300).

26. The contact device according to any one of claims 1-14, characterized in that, It also includes a second welding part (430) for connecting the contact (200) and the connector (300).

27. The contact device according to claim 8, characterized in that, Along the direction from the contact body (100) to the contact member (200), the orthographic projection of the connector (300) on the plane where the contact member (200) is located covers the orthographic projection of the first mounting portion (120) on the plane where the contact member (200) is located.

28. The contact device according to any one of claims 1-14, characterized in that, Along the direction from the contact body (100) to the contact member (200), the contact member (200) is provided with a first through hole (240).

29. The contact device according to claim 28, characterized in that, Along the direction from the contact body (100) to the contact member (200), the connector (300) is provided with a second through hole (320).

30. The contact device according to claim 29, characterized in that, The first through hole (240) and the second through hole (320) are connected.

31. The contact device according to any one of claims 1-14, characterized in that, The contact (200) further includes a contact connector (600), which is disposed on the side of the contact (200) opposite to the connector (300).

32. The contact device according to any one of claims 1-14, characterized in that, It also includes a positioning element (610) disposed on the side of the contact element (200) opposite to the connector (300).

33. The contact device according to claim 6, characterized in that, The cross-sectional shape of the first body part (110) includes any one of square, rectangular, polygonal, circular, and elliptical shapes.

34. The contact device according to claim 15, characterized in that, The cross-sectional shape of the second body part (210) includes any one of square, rectangular, polygonal, circular, and elliptical shapes.

35. A relay, characterized in that, The contact device includes any one of claims 1-34.

36. An electrical appliance, characterized in that, include: Equipment body; The circuit is connected to the device body; Busbar (500); The relay of claim 35, wherein the contact device of the relay is connected to the circuit via the bus (500).

37. The electrical equipment according to claim 36, characterized in that, The busbar (500) has a third through hole (510), and the contact connector (600) of the contact device is located in the third through hole (510).

38. The electrical equipment according to claim 36, characterized in that, The busbar (500) has a busbar groove with the opening of the busbar groove facing the contact device, and the contact connector (600) of the contact device is located in the busbar groove.

39. The electrical equipment according to claim 38, characterized in that, The busbar (500) has a first surface (520) and a second surface (530) disposed opposite to each other, the first surface (520) being disposed away from the contact device relative to the second surface (530); The distance between the first surface (520) and the bottom of the busbar groove is A, and A satisfies: 0.5mm≤A≤2mm.

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