Static contact, relay, electric control assembly and electric equipment
By designing a concave-convex structure for nested welding between the stationary contacts of the relay, the problem of weak connection of the stationary contacts is solved, the welding strength and structural stability are improved, and the reliability and accuracy of the stationary contacts are ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BYD CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-05-05
AI Technical Summary
In the prior art, the welding connection between the stationary contact and the moving contact of the relay is weak, resulting in an unstable connection that is easy to separate, affecting the structural stability and reliability.
The first contact component is made of aluminum and the second contact component is made of copper. By designing a concave-convex structure on the contact surface for nesting and welding, the welding area and positioning effect are increased, thereby improving the connection's firmness and reliability.
It effectively improves the welding strength and structural stability between stationary contact components, reduces the risk of separation, and improves the fitting accuracy and reliability.
Smart Images
Figure CN224204053U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of relay technology, and more particularly to a stationary contact, a relay, an electrical control component, and an electrical device. Background Technology
[0002] A relay is an electrical control device that, by applying or disconnecting a small current to a relay, makes or breaks the electrical contact between the stationary contact and the moving contact, thereby controlling the opening or closing of an external high-voltage circuit. Relays have a wide range of applications in the field of automation control.
[0003] The stationary contact in a relay includes a first contact element and a second contact element. The first contact element is used to connect to the external busbar of the relay. The second contact element is used to make electrical contact or disconnect with the moving contact plate inside the relay. The first and second contact elements are connected by welding; specifically, the first and second contact elements can be welded together at the contact surface.
[0004] However, the small contact area between the first and second contact components results in poor welded connection strength, reducing the robustness and reliability of the connection between them. This makes it easy for the first and second contact components to separate, thereby reducing the overall structural stability of the stationary contact. Utility Model Content
[0005] This application provides a stationary contact, a relay, an electrical control component, and an electrical device, which can effectively improve the welding strength between the first contact and the second contact, improve the firmness and reliability of the connection between the first contact and the second contact, thereby effectively improving the overall structural stability of the stationary contact.
[0006] One aspect of this application provides a stationary contact, comprising:
[0007] The first contact element is made of aluminum.
[0008] The second contact element is made of copper.
[0009] The first contact member has a first contact surface, and the second contact member has a second contact surface. The first contact surface and the second contact surface are connected by a nested and welded structure.
[0010] This application provides a stationary contact where a first contact surface of a first contact element and a second contact surface of a second contact element are connected by a nested and welded concave-convex structure. This nested structure effectively increases the welding area between the first and second contact surfaces, significantly improving the strength and reliability of the connection between the first and second contact elements. It reduces or prevents separation of the first and second contact elements, thereby effectively improving the overall structural stability and reliability of the stationary contact.
[0011] In one possible implementation, one of the first contact surface and the second contact surface has a first protrusion and the other has a first groove, the first protrusion being embedded in the first groove and welded to the inner wall of the first groove.
[0012] In one possible implementation, the first protrusion is located on the second contact surface, and the first groove is located on the first contact surface.
[0013] In one possible implementation, the first protrusion is a ring-shaped structure, and the first protrusion is disposed around the center of the second contact surface;
[0014] The first groove is an annular structure corresponding to the first protrusion, and the first groove is arranged around the center of the first contact surface.
[0015] In one possible implementation, the number of the first protrusions and the first grooves is multiple, and the number of the first protrusions is equal to the number of the first grooves;
[0016] Along the center to the edge of the first contact surface, the first grooves are sequentially fitted and spaced apart;
[0017] Along the center to the edge of the second contact surface, the first protrusions are sequentially fitted and spaced apart.
[0018] In one possible implementation, one of the first contact surface and the second contact surface also has a second protrusion and the other has a second groove, the second protrusion being embedded in the second groove and welded to the inner wall of the second groove.
[0019] In one possible implementation, the second protrusion has a higher protrusion height than the first protrusion.
[0020] In one possible implementation, the second protrusion is located at the middle portion of the first contact surface;
[0021] The second groove is located at the middle position of the second contact surface, and the second protrusion is disposed opposite to the second groove.
[0022] In one possible implementation, the second protrusion is located at the middle portion of the second contact surface;
[0023] The second groove is located at the middle position of the first contact surface, and the second protrusion is disposed opposite to the second groove.
[0024] In one possible implementation, the first contact member is further provided with an exhaust hole, which extends from the top of the second groove to the side of the first contact member facing away from the second contact member.
[0025] In one possible implementation, a stress relief groove is further provided on one of the first contact surface and the second contact surface, the stress relief groove being used to receive the stress generated when the first contact surface and the second contact surface are welded.
[0026] In one possible implementation, the stress relief groove is an annular groove, which is formed on the first contact surface and surrounds the second groove.
[0027] In one possible implementation, the cross-sectional shape of the second protrusion is circular, annular, rectangular, polygonal, elliptical, triangular, or fan-shaped.
[0028] A second aspect of this application provides a relay, including a housing and any of the stationary contacts described above;
[0029] At least a portion of the first contact member in the stationary contact is exposed outside the housing, and at least a portion of the second contact member is located inside the housing.
[0030] In one possible implementation, the end of the second contact member connected to the first contact member extends outside the housing.
[0031] In one possible implementation, the first contact member includes a contact body and a enclosure portion connected to each other;
[0032] The second protrusion or the second groove is located on the contact body, and the enclosure portion surrounds the outer periphery of the contact body;
[0033] The enclosure is also provided around the outer periphery of the second contact and welded to the outer periphery of the second contact.
[0034] In one possible implementation, the enclosure extends toward the housing and is sealed to the housing.
[0035] One possible implementation also includes a moving contact plate and an iron core;
[0036] The iron core is connected to the moving contact plate, and the iron core is used to drive the moving contact plate to reciprocate so that the moving contact plate can make or break electrical contact with the second contact member.
[0037] In one possible implementation, a coil is also included, which is wound around the outer periphery of the iron core. The coil is used to cause the iron core to move the movable contact plate toward the first contact member after being energized, so that the movable contact plate makes electrical contact with the first contact member.
[0038] In one possible implementation, a resilient reset element is also included, which is connected to the iron core;
[0039] The elastic reset member is used to drive the iron core to move away from the second contact member after the coil is de-energized, so that the iron core drives the moving contact plate away from the second contact member and disconnects from the second contact member.
[0040] A third aspect of this application provides an electronic control component, including a bus and any of the relays described above, wherein the bus is located outside the relay housing and is electrically connected to a first contact element in the relay.
[0041] In one possible implementation, the first contact member is further provided with a third protrusion, and the busbar is provided with a mounting hole. The third protrusion is used to embed into the mounting hole on the busbar and is welded to the inner wall of the mounting hole.
[0042] In one possible implementation, the cross-sectional shape of the third protrusion is circular, annular, rectangular, polygonal, elliptical, triangular, or fan-shaped.
[0043] A fourth aspect of this application provides an electrical device, including a battery pack and any of the above-described electronic control components;
[0044] The busbar in the electronic control assembly is electrically connected to the battery pack. Attached Figure Description
[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0046] Figure 1 This is a schematic diagram of the structure of the first type of electronic control component provided in the embodiments of this application;
[0047] Figure 2A front view of a first type of first contact element provided in an embodiment of this application;
[0048] Figure 3 A bottom view of the first contact element provided in the embodiments of this application;
[0049] Figure 4 for Figure 3 AA section view in the middle;
[0050] Figure 5 A front view of a first type of second contact element provided in an embodiment of this application;
[0051] Figure 6 A top view of the first type of second contact element provided in the embodiments of this application;
[0052] Figure 7 for Figure 6 BB section view in the middle;
[0053] Figure 8 This is a schematic diagram of the structure of the second type of electronic control component provided in the embodiments of this application;
[0054] Figure 9 A front view of a second type of first contact element provided in an embodiment of this application;
[0055] Figure 10 This is a schematic diagram of the structure of the second type of first contact element provided in the embodiments of this application;
[0056] Figure 11 This is a schematic diagram of the structure of the second type of second contact element provided in the embodiments of this application;
[0057] Figure 12 A top view of the second type of second contact element provided in the embodiments of this application;
[0058] Figure 13 A bottom view of the second type of first contact element provided in the embodiments of this application;
[0059] Figure 14 for Figure 13 CC section view in the middle;
[0060] Figure 15 A front view of a second type of second contact element provided in an embodiment of this application;
[0061] Figure 16 for Figure 15 DD section view in the middle;
[0062] Figure 17 This is a schematic diagram of the structure of the third type of electronic control component provided in the embodiments of this application;
[0063] Figure 18This is a schematic diagram of the structure of the third type of stationary contact provided in the embodiments of this application;
[0064] Figure 19 An exploded view of the third type of stationary contact provided in the embodiments of this application;
[0065] Figure 20 A cross-sectional view of a third type of stationary contact provided in an embodiment of this application;
[0066] Figure 21 for Figure 20 A magnified view of region E in the middle;
[0067] Figure 22 A cross-sectional view of a fourth type of relay provided in an embodiment of this application;
[0068] Figure 23 This is a schematic diagram of the structure of the fourth type of relay provided in the embodiments of this application;
[0069] Figure 24 This is a schematic diagram of the structure of the first type of second protrusion provided in the embodiments of this application;
[0070] Figure 25 This is a schematic diagram of the structure of the second type of second protrusion provided in the embodiments of this application;
[0071] Figure 26 This is a schematic diagram of the structure of the third type of second protrusion provided in the embodiments of this application;
[0072] Figure 27 This is a schematic diagram of the structure of the fourth type of second protrusion provided in the embodiments of this application;
[0073] Figure 28 This is a schematic diagram of the structure of the fifth type of second protrusion provided in the embodiments of this application;
[0074] Figure 29 This is a schematic diagram of the structure of the first type of third protrusion provided in the embodiments of this application;
[0075] Figure 30 This is a schematic diagram of the structure of the second type of third protrusion provided in the embodiments of this application;
[0076] Figure 31 This is a schematic diagram of the structure of the third type of protrusion provided in the embodiments of this application;
[0077] Figure 32 This is a schematic diagram of the structure of the fourth type of third protrusion provided in the embodiments of this application;
[0078] Figure 33 This is a schematic diagram of the structure of the fifth type of third protrusion provided in the embodiments of this application;
[0079] Figure 34This is a schematic diagram of the sixth type of third protrusion provided in the embodiments of this application;
[0080] Figure 35 This is a schematic diagram of the structure of the first contact member without a third protrusion provided in an embodiment of this application.
[0081] Figure label:
[0082] 10-Relay;
[0083] 100-Stationary contact;
[0084] 110 - First contact element; 111 - Second protrusion; 112 - First contact surface; 113 - First groove; 114 - Vent hole; 115 - Stress relief groove; 116 - Contact body; 117 - Enclosure part; 118 - Third protrusion;
[0085] 120 - Second contact element; 121 - Second groove; 122 - Second contact surface; 123 - First protrusion;
[0086] 200-Housing; 300-Moving contact plate; 400-Iron core; 500-Coil; 600-Elastic reset element;
[0087] 20-Bus;
[0088] 1-Electrical control components. Detailed Implementation
[0089] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0090] This application provides a stationary contact, a relay including the stationary contact, an electronic control component including the relay, and an electrical device including the electronic control component. The electrical device can be a vehicle, such as a sedan, bus, or truck. For example, the vehicle can be an electric vehicle, a pure electric vehicle, a hybrid electric vehicle, a range-extended electric vehicle, a plug-in hybrid electric vehicle, a new energy vehicle, or any vehicle with a battery.
[0091] The following explanation uses a vehicle as an example of an electrical appliance.
[0092] The vehicle may also include a body, a motor, and a battery pack, wherein the electronic control components, battery pack, axles, and motor can all be mounted on the body. The battery pack can be electrically connected to the motor, and the motor can be connected to the axle. The battery pack can supply power to the motor, enabling it to rotate. During rotation, the motor drives the axle to rotate, thereby allowing the vehicle to move.
[0093] The vehicle can also have other electrical devices, and the battery pack can also power other electrical devices.
[0094] Figure 1 This is a schematic diagram of the structure of the first type of electronic control component provided in the embodiments of this application.
[0095] See Figure 1 As shown, the electronic control component 1 may include a relay 10 and a bus 20. The relay 10 may include a housing 200 and a stationary contact 100. The stationary contact 100 may include a first contact element 110 and a second contact element 120, wherein at least a portion of the first contact element 110 may be exposed outside the housing 200, and at least a portion of the second contact element 120 may be located inside the housing 200. The bus 20 may be located outside the housing 200 of the relay 10. The portion of the first contact element 110 exposed outside the housing 200 may be used for electrical connection with the bus 20. The other end of the bus 20 may be connected to the controller of the battery pack.
[0096] See also Figure 1 As shown, the relay 10 may also include a moving contact plate 300 and an iron core 400. The moving contact plate 300 and the iron core 400 may be located inside the housing 200. The iron core 400 may be connected to the moving contact plate 300. The iron core 400 may be used to drive the moving contact plate 300 to reciprocate so that the moving contact plate 300 may make electrical contact with or disconnect from the second contact member 120.
[0097] For example, the relay 10 may also include a coil 500 and a resilient reset member 600. The coil 500 may be wound around the outer periphery of the iron core 400. The coil 500 may be used to move the iron core 400 toward the second contact member 120 after being energized, so that the iron core 400 can drive the moving contact plate 300 to move toward the second contact member 120 together, thereby making the moving contact plate 300 electrically contact the second contact member 120.
[0098] The elastic reset member 600 can be connected to the iron core 400. The elastic reset member 600 can be used to drive the iron core 400 to move away from the second contact member 120 after the coil 500 is de-energized, so that the iron core 400 can drive the moving contact plate 300 away from the second contact member 120, thereby disconnecting the moving contact plate 300 from the second contact member 120.
[0099] The electronic control assembly 1 can control the battery pack through the relay 10 and bus 20. For example, by applying and disconnecting a small current to the coil 500 in the relay 10, the moving contact 300 can be electrically connected to or disconnected from the stationary contact 100, thereby switching the connection state between the battery pack and the motor or electrical components. For instance, when the vehicle battery pack needs to supply power to the motor or electrical components, current can be input to the relay 10, causing the moving contact 300 in the relay 10 to make electrical contact with the stationary contact 100. At this time, the battery pack can be electrically connected to the motor or other electrical components, allowing the battery pack to supply power to the motor and other electrical components. Conversely, when it is necessary to disconnect the battery pack from the motor or electrical components, the input current to the relay 10 can be disconnected, causing the moving contact 300 in the relay 10 to disconnect from the stationary contact 100. At this time, the battery pack can be disconnected from the motor or other electrical components.
[0100] As described in the background section above, in related technologies, the first contact and the second contact are connected by welding. Specifically, the first contact and the second contact can be connected by welding at the contact surface.
[0101] However, the small contact area between the first and second contact components results in poor welded connection strength, reducing the robustness and reliability of the connection between them. This makes it easy for the first and second contact components to separate, thereby reducing the overall structural stability of the stationary contact.
[0102] Furthermore, since the first and second contact components are in surface contact, misalignment can easily occur during their mating. This leads to assembly deviations between the first and second contact components, reducing the accuracy of their fit.
[0103] To address the aforementioned problems, this application provides a stationary contact by connecting the first contact surface of a first contact element and the second contact surface of a second contact element through a nested and welded concave-convex structure. This nested structure effectively increases the welding area between the first and second contact surfaces, significantly improving the robustness and reliability of the connection between the first and second contact elements. It also reduces or prevents separation between the first and second contact elements, thereby effectively enhancing the overall structural stability and reliability of the stationary contact.
[0104] Furthermore, the fit between the concave and convex nested structures also plays a positioning role during the assembly of the first and second contact components, effectively reducing or preventing misalignment or displacement of the first and second contact components during assembly. This effectively reduces or prevents deviations in the fit between the first and second contact components, improving the fitting accuracy between them.
[0105] The stationary contact and relay provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0106] This application provides a stationary contact 100, see [link to previous document]. Figure 1 As shown, the stationary contact 100 may include a first contact member 110 and a second contact member 120. The first contact member 110 may be made of aluminum, and the second contact member 120 may be made of copper. The first contact member 110 may have a first contact surface 112, and the second contact member 120 may have a second contact surface 122. The first contact surface 112 and the second contact surface 122 may be connected by a nested and welded structure.
[0107] The first contact surface 112 and the second contact surface 122 enable surface contact between the first contact member 110 and the second contact member 120, which helps improve the smoothness of the fit between them. This effectively reduces or prevents tilting of the first contact member 110 and the second contact member 120 during the fit, thereby effectively improving the reliability and stability of the fit between them.
[0108] For example, a protruding structure can be provided on the first contact member 110, and a groove structure can be provided on the second contact member 120. Alternatively, a protruding structure can be provided on the second contact member 120, and a groove structure can be provided on the first contact member 110.
[0109] During the engagement of the first contact 110 and the second contact 120, the protrusion structure can be embedded in the groove structure, and the outer side of the protrusion structure can be welded to the inner wall of the groove structure, so that the first contact 110 and the second contact 120 can be connected by the nested welding of the protrusion structure and the groove structure.
[0110] Compared to surface contact welding between the first contact 110 and the second contact 120, the fit between the concave and convex structures increases the welding area beyond the original welding area. This effectively increases the welding area between the first contact 110 and the second contact 120, thereby significantly improving the connection strength between them.
[0111] This embodiment of the application connects the first contact surface 112 of the first contact member 110 and the second contact surface 122 of the second contact member 120 by a nested and welded concave-convex structure. The fit between the concave-convex structures effectively increases the welding area between the first contact surface 112 and the second contact surface 122, effectively improving the strength and reliability of the connection between the first contact member 110 and the second contact member 120. This reduces or avoids the possibility of separation between the first contact member 110 and the second contact member 120, thereby effectively improving the overall structural stability and reliability of the stationary contact 100.
[0112] Furthermore, the fit between the concave and convex structures also plays a positioning role during the assembly of the first contact 110 and the second contact 120, effectively reducing or avoiding misalignment or displacement of the first contact 110 and the second contact 120 during assembly. This effectively reduces or avoids deviations in the fit between the first contact 110 and the second contact 120, improving the fitting accuracy between them.
[0113] Figure 2 This is a front view of the first contact element provided in the embodiments of this application. Figure 3 A bottom view of the first contact element provided in the embodiments of this application. Figure 4 for Figure 3 AA section view, Figure 5 This is a front view of the first type of second contact member provided in the embodiments of this application. Figure 6 A top view of the first type of second contact member provided in the embodiments of this application. Figure 7 for Figure 6 BB section view in the middle.
[0114] One of the first contact surface 112 and the second contact surface 122 may have a first protrusion 123, and the other may have a first groove 113. For example, see Figure 2 , Figure 3 and Figure 4 As shown, the first groove 113 can be located on the first contact member 110, see [reference]. Figure 5 and Figure 6 As shown, the first protrusion 123 may be located on the second contact member 120. Alternatively, in some examples, the first groove 113 may also be located on the second contact member 120, and the first protrusion 123 may be located on the first contact member 110. During the engagement of the first contact member 110 and the second contact member 120, the first protrusion 123 may be embedded in the first groove 113 and welded to the inner wall of the first groove 113.
[0115] The engagement of the first protrusion 123 and the first groove 113 effectively increases the welding area between the first contact 110 and the second contact 120, thereby improving the strength and reliability of the connection between them. This effectively enhances the overall structural stability and reliability of the stationary contact 100.
[0116] In one possible implementation, see [link to relevant documentation] Figure 3 and Figure 4 As shown, the first groove 113 can be located on the first contact surface 112, see [reference]. Figure 5 , Figure 6 and Figure 7 As shown, the first protrusion 123 can be located on the second contact surface 122.
[0117] See Figure 6 As shown, the first protrusion 123 can be an annular structure, for example, the first protrusion 123 can be a circular annular structure, and the first protrusion 123 can be disposed around the center of the second contact surface 122. See also Figure 3 As shown, the first groove 113 is an annular structure corresponding to the first protrusion 123. For example, the first groove 113 can also be an annular structure. The first groove 113 is arranged opposite to the first protrusion 123 so that the first protrusion 123 can be embedded in the first groove 113. The first groove 113 can be arranged around the center of the first contact surface 112.
[0118] This increases the length of the first protrusion 123 on the second contact surface 122 and the length of the first groove 113 on the first contact surface 112. This effectively increases the welding area between the first contact member 110 and the second contact member 120, beyond the existing welding area between the first contact surface 112 and the second contact surface 122. This significantly improves the strength and reliability of the connection between the first contact member 110 and the second contact member 120, and enhances the overall structural stability and reliability of the stationary contact 100.
[0119] See also Figure 3 and Figure 6 As shown, there can be multiple first protrusions 123 and first grooves 113, and the number of first protrusions 123 and first grooves 113 is equal. The first grooves 113 can be sequentially nested and spaced apart along the center to the edge of the first contact surface 112. Correspondingly, the first protrusions 123 can be sequentially nested and spaced apart along the center to the edge of the second contact surface 122. Multiple first protrusions 123 and multiple first grooves 113 can respectively form a water ripple structure on the second contact surface 122 and the first contact surface 112.
[0120] When the first contact surface 112 and the second contact surface 122 come into contact with each other, the multiple first protrusions 123 can be embedded into the multiple first grooves 113 one by one. By setting multiple first protrusions 123 and first grooves 113, the contact area between the first contact member 110 and the second contact member 120 can be effectively increased, and the welding area between the first contact member 110 and the second contact member 120 can be effectively increased, thereby effectively improving the firmness and reliability of the connection between the first contact member 110 and the second contact member 120, and improving the overall structural stability and reliability of the stationary contact 100.
[0121] One of the first contact surface 112 and the second contact surface 122 may have a second protrusion 111, and the other may have a second groove 121. The second protrusion 111 may be embedded in the second groove 121 and welded to the inner wall of the second groove 121. For example, see Figure 3 and Figure 4 As shown, the second protrusion 111 can be located on the first contact surface 112, see [reference]. Figure 6 and Figure 7 As shown, the second groove 121 may be located on the second contact surface 122. Alternatively, in some examples, the second protrusion 111 may also be located on the second contact surface 122, and the second groove 121 may also be located on the first contact surface 112.
[0122] During the engagement of the first contact 110 and the second contact 120, the first contact surface 112 and the second contact surface 122 can be brought into face-to-face contact. At this time, the second protrusion 111 and the second groove 121 respectively provided on the two contact surfaces can be nested together. After completing the above process, the first contact surface 112 and the second contact surface 122 can be welded together, and the outer peripheral side of the second protrusion 111 can be welded to the inner wall of the second groove 121.
[0123] The engagement of the second protrusion 111 and the second groove 121 further increases the welding area between the first contact surface 112 and the second contact surface 122, effectively improving the robustness and reliability of the connection between the first contact member 110 and the second contact member 120. This effectively enhances the overall structural stability and reliability of the stationary contact 100.
[0124] Furthermore, the fit between the second protrusion 111 and the second groove 121 also plays a positioning role during the assembly of the first contact 110 and the second contact 120, effectively reducing or avoiding misalignment or displacement of the first contact 110 and the second contact 120 during assembly. This effectively reduces or avoids deviations in the fit between the first contact 110 and the second contact 120, improving the fitting accuracy between them.
[0125] Among them, see Figure 4 and Figure 5 As shown, the height of the second protrusion 111 can be greater than that of the first protrusion 123. This can be understood as the second protrusion 111 being a relatively large columnar structure, while the first protrusion 123 is a relatively small, protruding ridge. Correspondingly, the depth of the second groove 121 is also greater than the depth of the first groove 113. This effectively increases the mating depth between the second protrusion 111 and the second groove 121, enabling them to play a better positioning role.
[0126] See Figure 3 and Figure 4 As shown, in this embodiment, the second protrusion 111 can be located in the middle of the first contact surface 112. This improves the rationality of the placement of the second protrusion 111 on the first contact surface 112, and facilitates the positioning of the processing position of the second protrusion 111 during the production of the first contact member 110, which is beneficial to improving the production accuracy of the second protrusion 111.
[0127] See Figure 6 and Figure 7 As shown, the second groove 121 can be located in the middle of the second contact surface 122, which can improve the rationality of the setting of the second groove 121 on the second contact surface 122. During the production of the second contact part 120, it is convenient to position the processing position of the second groove 121, which is conducive to improving the production accuracy of the second groove 121.
[0128] The second protrusion 111 and the second groove 121 can be arranged opposite to each other. In this way, during the engagement of the first contact surface 112 and the second contact surface 122, the second protrusion 111 can be accurately embedded in the second groove 121, which can effectively reduce or avoid misalignment between the second protrusion 111 and the second groove 121 and thus assembly failure. This effectively improves the engagement accuracy between the second protrusion 111 and the second groove 121, and enhances the reliability and stability of the engagement between the second protrusion 111 and the second groove 121.
[0129] See Figure 3 and Figure 4 As shown, the second protrusion 111 and the first groove 113 can be spaced apart. This can reduce or avoid interference between the first groove 113 and the second protrusion 111, thereby affecting the normal setting of the second protrusion 111 and the first groove 113, and is conducive to improving the rationality of the arrangement of the first groove 113.
[0130] See Figure 6 and Figure 7As shown, the second groove 121 and the first protrusion 123 can be spaced apart. This can reduce or avoid interference between the first protrusion 123 and the second groove 121, thereby affecting the normal setting of the second groove 121 and the first protrusion 123, and is conducive to improving the rationality of the arrangement of the first protrusion 123.
[0131] Figure 8 This is a schematic diagram of the structure of the second type of electronic control component provided in the embodiments of this application. Figure 9 This is a front view of the second type of first contact element provided in the embodiments of this application. Figure 10 This is a schematic diagram of the structure of the second type of first contact element provided in the embodiments of this application. Figure 11 This is a schematic diagram of the structure of the second type of second contact element provided in the embodiments of this application. Figure 12 This is a top view of a second type of second contact element provided in an embodiment of this application.
[0132] In another possible implementation, see Figure 8 As shown, in this embodiment, the second protrusion 111 may be located on the second contact member 120, and the second groove 121 may be located on the first contact member 110.
[0133] For example, see Figure 9 and Figure 10 As shown, the second groove 121 can be located at the middle position of the first contact surface 112, see [reference]. Figure 11 and Figure 12 As shown, the second protrusion 111 can be located at the middle portion of the second contact surface 122. Furthermore, the second protrusion 111 and the second groove 121 can be disposed opposite to each other. During the contact process between the first contact surface 112 and the second contact surface 122, the second protrusion 111 can be embedded in the second groove 121 to provide positioning for the assembly between the first contact member 110 and the second contact member 120. Moreover, it can effectively increase the contact area between the first contact member 110 and the second contact member 120, thereby effectively increasing the welding area between the first contact member 110 and the second contact member 120, and improving the welding strength between the first contact member 110 and the second contact member 120.
[0134] Figure 13 A bottom view of the second type of first contact element provided in the embodiments of this application. Figure 14 for Figure 13 CC section view in Figure 15 This is a front view of the second type of second contact member provided in the embodiments of this application. Figure 16 for Figure 15 DD section view in the image.
[0135] See Figure 13 and Figure 14As shown, in this embodiment, the first groove 113 can be disposed on the first contact surface 112 of the first contact member 110, see [reference]. Figure 15 and Figure 16 As shown, the first protrusion 123 can be disposed on the second contact surface 122 of the second contact member 120. The specific structure, distribution and function of the first protrusion 123 and the first groove 113 can be referred to the descriptions of the first type of first contact member 110 and the first type of second contact member 120, and will not be repeated here.
[0136] Figure 17 This is a schematic diagram of the structure of the third type of electronic control component provided in the embodiments of this application. Figure 18 This is a schematic diagram of the structure of the third type of stationary contact provided in the embodiments of this application. Figure 19 This is an exploded view of the third type of stationary contact provided in the embodiments of this application. Figure 20 This is a cross-sectional view of the third type of stationary contact provided in the embodiments of this application. Figure 21 for Figure 20 A magnified view of region E in the middle.
[0137] In another possible implementation, see Figure 17 As shown, in this embodiment, the second protrusion 111 can be located on the second contact member 120, and the second groove 121 can be located on the first contact member 110.
[0138] For example, see Figure 18 and Figure 19 As shown, the second protrusion 111 can be located at the middle portion of the second contact surface 122. (Combined with...) Figure 20 As shown, the second groove 121 is located in the middle of the first contact surface 112, and the second protrusion 111 and the second groove 121 can be arranged opposite to each other.
[0139] During the engagement of the first contact surface 112 and the second contact surface 122, the second protrusion 111 on the second contact surface 122 is embedded in the second groove 121 on the first contact surface 112. The engagement between the second protrusion 111 and the second groove 121, while increasing the welding area between the first contact member 110 and the second contact member 120, can effectively reduce or avoid misalignment between the second protrusion 111 and the second groove 121, thus improving assembly failure. This effectively enhances the engagement accuracy between the second protrusion 111 and the second groove 121, and improves the reliability and stability of the engagement between them.
[0140] See also Figure 20As shown, the first contact member 110 may also be provided with a vent hole 114, which extends from the top of the second groove 121 to the side of the first contact member 110 facing away from the second contact member 120. During the welding process between the first contact member 110 and the second contact member 120, gas generated on the welding surface can be discharged through the vent hole 114. This effectively prevents gas from accumulating in the welding surface and affecting the normal welding of the first contact member 110 and the second contact, thus helping to improve the reliability and stability of the welding between the first contact member 110 and the second contact member 120.
[0141] See Figure 20 and Figure 21 As shown, a stress relief groove 115 may be provided on one of the first contact surface 112 and the second contact surface 122. The stress relief groove 115 can be used to receive the stress generated when the first contact surface 112 and the second contact surface 122 are welded. For example, the stress relief groove 115 can be a groove structure, and the stress relief groove 115 can be provided on the first contact surface 112 or on the second contact surface 122.
[0142] During the welding process between the first contact surface 112 and the second contact surface 122, the stress generated can be released in the stress relief groove 115. This effectively reduces stress concentration between the first contact surface 112 and the second contact surface 122, which helps to improve the welding strength between the first contact member 110 and the second contact member 120, thereby effectively improving the connection strength between the first contact member 110 and the second contact member 120.
[0143] The stress relief groove 115 can be an annular groove, which can be formed on the first contact surface 112 and can surround the second groove 121. This allows the stress relief groove 115 to be distributed along the entire outer periphery of the second groove 121, effectively increasing the distribution range of the stress relief groove 115 on the first contact surface 112, increasing the stress relief amount of the stress relief groove 115, and thus effectively improving the welding strength between the first contact member 110 and the second contact member 120.
[0144] See Figure 17 As shown, the end of the second contact 120 connected to the first contact 110 can extend out of the housing 200. This makes it easier for the second contact 120 to connect with the first contact 110, which helps to improve the operability of the connection between the first contact 110 and the second contact 120.
[0145] See also Figure 20 and Figure 21As shown, the first contact member 110 may include a contact body 116 and a surrounding portion 117 connected to each other. A second protrusion 111 or a second groove 121 may be located on the contact body 116, and the surrounding portion 117 may surround the outer periphery of the contact body 116. For example, when the second protrusion 111 is located on the first contact member 110, the second protrusion 111 may be located on the contact body 116 of the first contact member 110. When the second groove 121 is located on the first contact member 110, the second groove 121 may be located on the contact body 116 of the first contact member 110. For example, referring to the figures, in this embodiment of the application, a second groove 121 may be provided on the contact body 116.
[0146] The enclosure portion 117 also surrounds the outer periphery of the second contact member 120 and is welded to the outer periphery of the second contact member 120. This effectively increases the welding area between the first contact member 110 and the second contact member 120, effectively improving the welding strength between the first contact member 110 and the second contact member 120, thereby effectively improving the firmness and reliability of the connection between the first contact member 110 and the second contact member 120.
[0147] Figure 22 This is a cross-sectional view of the fourth type of relay provided in the embodiments of this application. Figure 23 This is a schematic diagram of the structure of a fourth type of relay provided in an embodiment of this application.
[0148] See Figure 22 and Figure 23 As shown, the enclosure portion 117 can extend toward the housing 200 and be sealed to the housing 200. In this way, the first contact member 110 can completely cover the portion of the second contact member 120 that extends outside the housing 200, thus enclosing the second contact member 120 within the housing 200. This isolates the second contact member 120 from external air, effectively reducing oxidation of the copper second contact member 120 and helping to extend its service life.
[0149] Figure 24 This is a schematic diagram of the structure of the first type of second protrusion provided in the embodiments of this application. Figure 25 This is a schematic diagram of the structure of the second type of second protrusion provided in the embodiments of this application. Figure 26 This is a schematic diagram of the third type of second protrusion provided in the embodiments of this application. Figure 27 This is a schematic diagram of the fourth type of second protrusion provided in the embodiments of this application. Figure 28 This is a schematic diagram of the fifth type of second protrusion provided in the embodiments of this application.
[0150] In this embodiment, the cross-sectional shape of the second protrusion 111 can be circular, or, see... Figure 24As shown, the cross-sectional shape of the second protrusion 111 can be as follows: Figure 24 The shape shown is elliptical. Alternatively, see [link to other document]. Figure 25 As shown, the cross-sectional shape of the second protrusion 111 can also be as follows: Figure 25 The image shown is a ring. Alternatively, see [link to image]. Figure 26 As shown, the cross-sectional shape of the second protrusion 111 can also be rectangular, as shown in the figure. Alternatively, see... Figure 27 As shown, the cross-sectional shape of the second protrusion 111 can also be triangular, as shown in the figure. Alternatively, see... Figure 28 As shown, the cross-sectional shape of the second protrusion 111 can also be fan-shaped, as shown in the figure. Alternatively, in some examples, the cross-sectional shape of the second protrusion 111 can also be polygonal. All of the above structures allow the second protrusion 111 to effectively increase the welding area between the first contact member 110 and the second contact member 120 while achieving the positioning effect, thereby effectively improving the assembly accuracy and welding strength between the first contact member 110 and the second contact member 120.
[0151] See also Figure 17 As shown, the electronic control assembly 1 may further include a busbar 20, which may be located outside the housing 200 of the relay 10. The busbar 20 may be electrically connected to the first contact 110 of the relay 10. For example, the first contact 110 and the busbar 20 may be connected by welding so that the first contact 110 and the busbar 20 can be electrically connected.
[0152] See Figure 17 As shown, a third protrusion 118 may be provided on the first contact member 110, and a mounting hole (not shown in the figure) may be provided on the busbar 20. The third protrusion 118 can be embedded into the mounting hole on the busbar 20 and welded to the inner wall of the mounting hole. Through the cooperation between the third protrusion 118 and the mounting hole, the welding area between the first contact member 110 and the busbar 20 can be effectively increased, which can effectively improve the welding strength between the first contact member 110 and the busbar 20, and improve the reliability and stability of the electrical connection between the first contact member 110 and the busbar 20.
[0153] Furthermore, by embedding the third protrusion 118 within the mounting hole, it also serves a positioning function during the connection between the first contact 110 and the busbar 20. During the welding process between the first contact 110 and the busbar 20, misalignment or displacement between them can be effectively reduced or avoided. This helps improve the reliability of the welding between the first contact 110 and the busbar 20.
[0154] Figure 29 This is a schematic diagram of the structure of the first type of third protrusion provided in the embodiments of this application. Figure 30This is a schematic diagram of the structure of the second type of third protrusion provided in the embodiments of this application. Figure 31 This is a schematic diagram of the third type of protrusion provided in the embodiments of this application. Figure 32 This is a schematic diagram of the fourth type of third protrusion provided in the embodiments of this application. Figure 33 This is a schematic diagram of the fifth type of third protrusion provided in the embodiments of this application. Figure 34 This is a schematic diagram of the sixth type of third protrusion provided in the embodiments of this application. Figure 35 This is a schematic diagram of the structure of the first contact member without a third protrusion provided in an embodiment of this application.
[0155] See Figure 29 As shown, the cross-sectional shape of the third protrusion 118 can be as follows: Figure 29 The image shown is circular, or see [other image]. Figure 30 As shown, the cross-sectional shape of the third protrusion 118 can also be as follows: Figure 30 The image shown is a ring. Alternatively, see [link to image]. Figure 31 As shown, the cross-sectional shape of the third protrusion 118 can also be as follows: Figure 31 The image shown is a rectangle. Alternatively, see [link to image]. Figure 32 As shown, the cross-sectional shape of the third protrusion 118 can also be as follows: Figure 32 The image shown is a triangle. Alternatively, see [link to image]. Figure 33 As shown, the cross-sectional shape of the third protrusion 118 can also be as follows: Figure 33 The image shows a sector. See also... Figure 34 As shown, the cross-sectional shape of the third protrusion 118 can be as follows: Figure 34 The diagram shows a rectangular structure with rounded ends. Alternatively, in some examples, the cross-sectional shape of the third protrusion 118 can also be polygonal.
[0156] All of the above structures can effectively increase the welding area between the first contact 110 and the busbar 20 while achieving the positioning effect, thereby effectively improving the assembly accuracy and welding strength between the first contact 110 and the busbar 20.
[0157] Or see Figure 35 As shown, the third protrusion 118 may not be provided on the first contact member 110, and the first contact member 110 and the busbar 20 are in surface contact and welded together.
[0158] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0159] In the description of this utility model, it should be understood that the terms "comprising" and "having" as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0160] 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.
[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A stationary contact, characterized in that, include: The first contact element (110) is an aluminum component; The second contact (120) is made of copper. The first contact member (110) has a first contact surface (112), and the second contact member (120) has a second contact surface (122). The first contact surface (112) and the second contact surface (122) are connected by a nested and welded structure.
2. The stationary contact according to claim 1, characterized in that, One of the first contact surface (112) and the second contact surface (122) has a first protrusion (123) and the other has a first groove (113). The first protrusion (123) is embedded in the first groove (113) and welded to the inner wall of the first groove (113).
3. The stationary contact according to claim 2, characterized in that, The first protrusion (123) is located on the second contact surface (122), and the first groove (113) is located on the first contact surface (112).
4. The stationary contact according to claim 2, characterized in that, The first protrusion (123) is a ring structure, and the first protrusion (123) is arranged around the center of the second contact surface (122); The first groove (113) is an annular structure corresponding to the first protrusion (123), and the first groove (113) is arranged around the center of the first contact surface (112).
5. The stationary contact according to claim 4, characterized in that, The number of the first protrusion (123) and the first groove (113) is multiple, and the number of the first protrusion (123) and the number of the first groove (113) are equal; Along the center to the edge of the first contact surface (112), the first grooves (113) are sequentially fitted and spaced apart; Along the center to the edge of the second contact surface (122), the first protrusions (123) are sequentially fitted and spaced apart.
6. The stationary contact according to any one of claims 2 to 5, characterized in that, One of the first contact surface (112) and the second contact surface (122) has a second protrusion (111) and the other has a second groove (121). The second protrusion (111) is embedded in the second groove (121) and welded to the inner wall of the second groove (121).
7. The stationary contact according to claim 6, characterized in that, The second protrusion (111) has a higher protrusion height than the first protrusion (123).
8. The stationary contact according to claim 7, characterized in that, The second protrusion (111) is located at the middle part of the first contact surface (112); The second groove (121) is located in the middle of the second contact surface (122), and the second protrusion (111) is disposed opposite to the second groove (121).
9. The stationary contact according to claim 7, characterized in that, The second protrusion (111) is located at the middle part of the second contact surface (122); The second groove (121) is located in the middle of the first contact surface (112), and the second protrusion (111) is disposed opposite to the second groove (121).
10. The stationary contact according to claim 9, characterized in that, The first contact member (110) is also provided with an exhaust hole (114), which extends from the top of the second groove (121) to the side of the first contact member (110) facing away from the second contact member (120).
11. The stationary contact according to claim 9, characterized in that, A stress relief groove (115) is also provided on one of the first contact surface (112) and the second contact surface (122), the stress relief groove (115) being used to receive the stress generated when the first contact surface (112) and the second contact surface (122) are welded.
12. The stationary contact according to claim 11, characterized in that, The stress relief groove (115) is an annular groove. The stress relief groove (115) is formed on the first contact surface (112) and is arranged around the second groove (121).
13. The stationary contact according to claim 6, characterized in that, The cross-sectional shape of the second protrusion (111) is circular, annular, rectangular, polygonal, elliptical, triangular or fan-shaped.
14. A relay, characterized in that, Includes a housing (200) and a stationary contact as described in any one of claims 1 to 13 above; At least a portion of the first contact member (110) in the stationary contact is exposed outside the housing (200), and at least a portion of the second contact member (120) is located inside the housing (200).
15. The relay according to claim 14, characterized in that, The end of the second contact (120) connected to the first contact (110) extends out of the housing (200).
16. The relay according to claim 15, characterized in that, The first contact member (110) includes a contact body (116) and a enclosure portion (117) connected to each other. The second protrusion (111) or the second groove (121) is located on the contact body (116), and the enclosure portion (117) is arranged around the outer periphery of the contact body (116); The enclosure (117) is also enclosed on the outer periphery of the second contact (120) and welded to the outer periphery of the second contact (120).
17. The relay according to claim 16, characterized in that, The enclosure (117) extends toward the housing (200) and is sealed to the housing (200).
18. The relay according to claim 14, characterized in that, It also includes a moving contact plate (300) and an iron core (400); The iron core (400) is connected to the movable contact plate (300), and the iron core (400) is used to drive the movable contact plate (300) to reciprocate so that the movable contact plate (300) can make electrical contact or disconnect with the second contact member (120).
19. The relay according to claim 18, characterized in that, It also includes a coil (500) which is wound around the outer periphery of the iron core (400). The coil (500) is used to cause the iron core (400) to drive the movable contact plate (300) toward the first contact member (110) after being energized, so that the movable contact plate (300) makes electrical contact with the first contact member (110).
20. The relay according to claim 19, characterized in that, It also includes an elastic reset member (600), which is connected to the iron core (400); The elastic reset member (600) is used to drive the iron core (400) to move away from the second contact member (120) after the coil (500) is de-energized, so that the iron core (400) drives the moving contact plate (300) away from the second contact member (120) and disconnects from the second contact member (120).
21. An electronic control component, characterized in that, Includes a bus (20) and a relay as described in any one of claims 14 to 20, wherein the bus (20) is located outside the relay housing (200) and is electrically connected to a first contact (110) in the relay.
22. The electronic control assembly according to claim 21, characterized in that, The first contact member (110) is also provided with a third protrusion (118), and the busbar (20) is provided with a mounting hole. The third protrusion (118) is used to be embedded in the mounting hole on the busbar (20) and welded to the inner wall of the mounting hole.
23. The electronic control component according to claim 22, characterized in that, The cross-sectional shape of the third protrusion (118) is circular, annular, rectangular, polygonal, elliptical, triangular or fan-shaped.
24. An electrical appliance, characterized in that, Includes a battery pack and the electronic control components as described in any one of claims 21 to 23; The bus (20) in the electronic control component is electrically connected to the battery pack.