High-voltage contactor

Abstract

The utility model discloses a high-voltage contactor, and relates to the technical field of contactors. The high-voltage contactor comprises a contactor body and a temperature measuring part, the temperature measuring part comprises a first plate, a temperature measuring assembly and an insulating heat conduction part, the insulating heat conduction part is used for achieving heat conduction between a contact of the high-voltage contactor and the temperature measuring assembly, and then the temperature of the contact of the high-voltage contactor is monitored in real time through the temperature measuring assembly. When the temperature of the contact of the high-voltage contactor is too high, the external control piece can control the high-voltage contactor to stop working in time. According to the high-voltage contactor, the situation that the cutting-off performance of the high-voltage contactor is reduced (or the high-voltage contactor is burnt out due to high temperature) due to the fact that the contact of the high-voltage contactor continuously works at high temperature is effectively avoided, the use safety of the high-voltage contactor is improved, and frequent faults of the charging pile are avoided; according to the scheme, heat conduction between the contact of the high-voltage contactor and the temperature measurement assembly is achieved through the arrangement of the insulating heat conduction piece, effective heat conduction is achieved while electrical insulation is guaranteed, and both electrical safety and temperature monitoring are considered.

Description

Technical Field

[0001] This utility model relates to the field of contactor technology, and in particular to a high-voltage contactor. Background Technology

[0002] Currently, as charging piles on the market experience increasingly higher current and smaller size, the size of high-voltage contactors is also decreasing, resulting in less space for heat dissipation from the main contacts. Under these conditions, in hot weather combined with prolonged use of the charging piles, the high-voltage contactors are subjected to varying overcurrents for extended periods in a high-temperature environment. This can lead to excessively high contact temperatures, potentially causing the contactors to stop working or experience reduced disconnection performance, ultimately resulting in charging pile malfunctions. Frequent charging pile malfunctions not only increase maintenance costs but also negatively impact the user experience for end customers. Utility Model Content

[0003] The main purpose of this utility model is to propose a high-voltage contactor, which aims to improve the problem that charging piles are prone to failure due to the long-term operation of high-voltage contactors at high temperatures.

[0004] To achieve the above objectives, this utility model proposes a high-voltage contactor having intersecting X and Z directions, comprising:

[0005] The outer casing has a cavity for placement;

[0006] The contactor body is housed within the placement cavity; on one side in the Z direction, the contactor body has an upper surface, and the contacts of the contactor body extend outward from the upper surface; and a temperature measuring unit is disposed on the upper surface for monitoring the temperature of the contacts of the contactor body.

[0007] In one embodiment, the temperature measuring unit includes:

[0008] A first plate is disposed on the upper surface, and a through hole is provided in the first plate along the Z direction, through which the contact protrudes upward; at least a portion of the upper end face of the first plate is provided with a receiving groove, the receiving groove having a first communication opening communicating with the through hole; and

[0009] The temperature measuring component is housed within the receiving groove;

[0010] An insulating and heat-conducting component is disposed within the receiving groove and in contact with the temperature measuring component. The insulating and heat-conducting component is at least partially in contact with the contactor through the first communication port.

[0011] In one embodiment, the temperature measuring component includes:

[0012] A temperature sensing element is disposed within the receiving groove; and

[0013] A first wire, one end of which is electrically connected to the temperature sensing element;

[0014] The second wire, one end of which is electrically connected to the temperature sensing element;

[0015] The other end of the first wire and the second wire is used for electrical connection with external control components.

[0016] In one embodiment, the receiving groove includes:

[0017] A first groove structure is used to accommodate the temperature sensing element, and the first groove structure has a first communication opening on the side facing the perforation; and

[0018] The second groove structure is used to accommodate the first wire and the second wire;

[0019] A second connecting port is provided between the first slot structure and the second slot structure, and the second connecting port is used to connect the first slot structure and the second slot structure.

[0020] In the Z direction, the first groove structure has a first opening on the side opposite to the upper surface for placing the temperature sensing element in the first groove structure; the second groove structure has a second opening on the side opposite to the upper surface for placing the first wire and the second wire in the second groove structure.

[0021] In one embodiment, the second groove structure includes:

[0022] A first through groove is used to place the first wire. The first through groove has a first sidewall and a second sidewall disposed opposite to each other. The first sidewall has at least one first protrusion on the side facing the second sidewall, and the second sidewall has at least one second protrusion on the side facing the first sidewall. The first protrusion and the second protrusion are positioned opposite each other, and the gap between the first protrusion and the second protrusion forms a clamping space for clamping the first wire.

[0023] The second through groove is used to place the second wire. The second through groove has a third sidewall and a fourth sidewall disposed opposite to each other. The third sidewall is provided with at least one third protrusion on the side facing the fourth sidewall, and the fourth sidewall is provided with at least one fourth protrusion on the side facing the third sidewall. The third protrusion and the fourth protrusion are positioned opposite each other, and the gap between the third protrusion and the fourth protrusion forms a clamping space for clamping the second wire.

[0024] Both the first through slot and the second through slot are connected to the second connecting port.

[0025] In one embodiment, the high-voltage contactor further includes:

[0026] A first conductive adapter piece is embedded in the first plate, and one end of the first conductive adapter piece is used for electrical connection with the first wire; and

[0027] The second conductive adapter piece is embedded in the first plate, and one end of the second conductive adapter piece is used to electrically connect with the second wire;

[0028] The other ends of the first conductive adapter piece and the second conductive adapter piece extend at least partially outward from the first plate for electrical connection with the external control component.

[0029] In one embodiment, the inner diameter of the perforation is larger than the outer diameter of the contact, so that the gap between the circumferential sidewall of the contact and the inner wall of the perforation forms a filling space, and the first communication port is connected to the filling space and the receiving groove;

[0030] The insulating and thermally conductive component is a thermally conductive adhesive, and the thermally conductive adhesive fills the receiving groove and the filling space.

[0031] In one embodiment, the first plate is an insulating structural component.

[0032] In one embodiment, the housing includes:

[0033] A housing having a receiving cavity, wherein, in the Z direction, one side of the receiving cavity has a first inlet for inserting the contactor body into the receiving cavity; and

[0034] A cover is provided on the housing so that the cover and the housing together form the placement cavity for placing the contactor body; in the Z direction, the cover has a through hole on the side away from the housing so that the contact extends out of the placement cavity through the through hole.

[0035] In one embodiment, in the X direction, the two side walls of the contactor body are spaced apart from the inner side wall of the housing, forming a clearance space;

[0036] In the X direction, extension plates are provided on both sides of the cover, and protrusions are provided on the side of the extension plates opposite to the contactor body;

[0037] In the X direction, the two side walls of the housing are respectively provided with snap-fit ​​holes that engage with the protrusions, and the snap-fit ​​holes penetrate the side walls of the housing along the X direction;

[0038] The cover is placed over the housing, so that the extension plate is inserted into the clearance space and the protrusion is engaged in the corresponding engagement hole.

[0039] This utility model relates to a high-voltage contactor that incorporates a temperature measuring unit to monitor the contact temperature in real time. The temperature measuring unit includes a first plate with a receiving groove for mounting a temperature measuring component, providing a suitable environment for its placement. Simultaneously, an insulating heat-conducting component facilitates heat conduction between the high-voltage contactor's contacts and the temperature measuring component. The temperature measuring component monitors the contact temperature in real time and transmits the monitored temperature data to an external control unit. When the contact temperature is too high, the external control unit can stop the high-voltage contactor from operating. This effectively prevents the contactor's cutting performance from decreasing (or burning out) due to continuous operation at high temperatures, which could lead to frequent charging pile failures. This improves the safety of the high-voltage contactor, reduces maintenance costs, and enhances the user experience. The insulating heat-conducting component ensures effective heat conduction while maintaining electrical insulation, balancing electrical safety and temperature monitoring. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the overall structure of the high-voltage contactor of this utility model;

[0042] Figure 2 This utility model Figure 1 Schematic diagram of a medium- and high-voltage contactor without its cover;

[0043] Figure 3 This is a schematic diagram of the high-voltage contactor of this utility model without the outer casing;

[0044] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0045] Figure 5 This is a schematic diagram showing the connection relationship between the conductive post and the conductive adapter piece of this utility model;

[0046] Figure 6 This utility model Figure 5 Enlarged schematic diagram of the structure at point B;

[0047] Figure 7This is a schematic diagram showing the connection between the conductive adapter piece and the auxiliary contact, the first wire, and the second wire of this utility model;

[0048] Figure 8 This is a top view of the high-voltage contactor of this utility model without the cover.

[0049] Figure 9 This utility model Figure 8 Enlarged schematic diagram of the structure at point C;

[0050] Figure 10 This is a schematic diagram of the first plate structure of this utility model;

[0051] Figure 11 This is a schematic diagram of the cover structure of this utility model;

[0052] Figure 12 This utility model Figure 11 Schematic diagram of the cross-sectional structure of the middle cover;

[0053] Figure 13 This is a schematic diagram of the shell structure of this utility model.

[0054] Explanation of icon numbers:

[0055] 100. High-voltage contactor;

[0056] 1. Contactor body; 11. Upper surface; 12. Contact; 13. Auxiliary contacts;

[0057] 2. Outer shell; 21. Housing; 211. Receiving cavity; 212. Snap-fit ​​hole; 213. Clearance space; 22. Cover; 221. Extension plate; 222. Protrusion; 223. Auxiliary cavity; 224. Strip-shaped protrusion; 225. Through hole; 226. Barrier plate;

[0058] 3. First plate; 31. Through hole; 311. Filling space; 32. Auxiliary hole;

[0059] 4. Receiving groove; 41. First connecting port; 42. First groove structure; 43. Second groove structure; 431. First through groove; 4311. First protrusion; 4312. Second protrusion; 432. Second through groove; 4321. Third protrusion; 4322. Fourth protrusion; 44. Second connecting port;

[0060] 5. Temperature measuring component; 51. Temperature sensing element; 52. First lead wire; 53. Second lead wire;

[0061] 6. Conductive adapter piece; 61. First conductive adapter piece; 62. Second conductive adapter piece; 63. Third conductive adapter piece; 64. Fourth conductive adapter piece; 7. Connecting terminal; 8. Conductive post; 9. Adapter plate; 91. First adapter plate; 92. Second adapter plate; 10. Wire harness adapter.

[0062] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0063] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0064] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0065] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0066] Currently, as charging piles on the market experience increasingly higher current and smaller size, the size of high-voltage contactors is shrinking, resulting in less space for heat dissipation from the main contacts. Under these conditions, especially in hot weather and with prolonged use of the charging piles, the high-voltage contactors are subjected to varying overcurrents for extended periods at high temperatures. This can lead to excessively high contact temperatures, potentially causing the contactor to stop working or experience reduced breaking performance. For example, high temperatures can reduce the mechanical strength of the contact material, making it prone to deformation or damage under frequent switching operations or short-circuit current surges. High temperatures may also cause oxidation and ablation of the contact material, forming a high-resistivity layer on the contact surface, further increasing contact resistance. Prolonged high temperatures can also soften or even melt the contact material, leading to contact welding. Welded contacts cannot properly break, potentially causing equipment to fail to shut down and ultimately resulting in charging pile malfunctions. Frequent charging pile abnormalities not only increase maintenance costs but also negatively impact the user experience for end customers.

[0067] Based on this, refer to Figures 1-4 As shown, this application embodiment provides a high-voltage contactor 100 with intersecting X, Y, and Z directions, wherein the X, Y, and Z directions are perpendicular to each other. The high-voltage contactor 100 has an upper surface 11, and the contact 12 protrudes upward from the upper surface 11 at least partially. A temperature measuring part is disposed on the upper surface and is used to monitor the temperature of the contact 12. The temperature measuring part includes a first plate 3, a temperature measuring component 5, and an insulating heat-conducting component. The first plate 3 is disposed on the upper surface 11, and a through hole 31 is provided through the first plate 3 along the Z direction. When the first plate 3 is disposed on the upper surface 11, the contact 12 of the high-voltage contactor 100 protrudes upward through the through hole 31. It is understood that in this embodiment, insulation measures should be provided between the first plate 3 and the contact 12 of the high-voltage contactor 100, or the first plate 3 should be an insulating structural component to have a better electrical insulation effect and ensure electrical safety.

[0068] In this embodiment, as Figure 4As shown, at least a portion of the upper surface of the first plate 3 is provided with a receiving groove 4, and the receiving groove 4 has a first connecting port 41 communicating with the through hole 31; the temperature measuring component 5 is housed in the receiving groove 4, which provides installation space for the temperature measuring component 5; the insulating heat-conducting component is also provided in the receiving groove 4 and contacts the temperature measuring component 5, and at least a portion of the insulating heat-conducting component extends to the first connecting port 41, for contacting the peripheral sidewall of the contact 12 through the first connecting port 41, thereby achieving heat conduction between the contact 12 and the temperature measuring component 5 through the insulating heat-conducting component, and thus enabling real-time temperature monitoring of the contact 12 of the high-voltage contactor 100 through the temperature measuring component 5 and displaying the measured temperature parameters on the control panel in real time (e.g., ...). The alarm threshold of the temperature measuring component 5 can be set reasonably according to the operating environment and actual working conditions of the high-voltage contactor 100, and different colors (such as green for normal temperature and red for high temperature alarm) can be used to distinguish them. When the temperature measuring component 5 detects that the temperature of the contact 12 exceeds the set threshold, the monitoring personnel can judge whether intervention is required by the color of the temperature display value so that the monitoring personnel can take corresponding measures. Alternatively, when the temperature measuring component 5 detects that the temperature of the contact 12 exceeds the set threshold, the system directly cuts off the power supply of the high-voltage contactor 100 and controls the high-voltage contactor 100 to stop working, thereby preventing the high-voltage contactor 100 from being damaged due to overheating, avoiding safety accidents, and reducing the failure rate of the equipment.

[0069] In this embodiment, the high-voltage contactor 100 operates in a high-voltage environment, and there is a potential difference between its contacts 12 and the temperature measuring component 5. If they come into direct contact, it may cause electrical faults such as short circuits and leakage, or even endanger personal safety. The insulating and heat-conducting component can effectively isolate the current and ensure that there is no electrical connection between the two, thereby ensuring the safe operation of the high-voltage contactor 100. Thus, it not only ensures the safety of electrical use, but also realizes the temperature monitoring of the contacts 12 of the high-voltage contactor 100.

[0070] Reference Figure 4 , Figure 9As shown, in one embodiment of this application, the temperature measuring component 5 includes a temperature sensing element 51, a first wire 52, and a second wire 53. The temperature sensing element 51 can be a thermistor. One end of the first wire 52 and the second wire 53 are electrically connected to the thermistor, and the other ends of the first wire 52 and the second wire 53 are electrically connected to an external control component. This allows the external control component, the first wire 52, the thermistor, and the second wire 53 to form a complete electrical circuit for real-time temperature monitoring of the contacts 12 of the high-voltage contactor 100. It is understood that the external control component... The component can be a controller or other control unit, used to acquire the resistance change of the thermistor in real time, and calculate the measured contact 12 temperature based on the resistance change of the thermistor (since this is existing technology, its working principle will not be explained in detail here); the external control component determines whether the current temperature exceeds the safe range based on the preset temperature threshold. If the temperature exceeds the set threshold, the external control component controls the power supply of the high-voltage contactor 100 to cut off the power supply to prevent the high-voltage contactor 100 from being damaged due to overheating, thereby ensuring that the high-voltage contactor 100 operates within a safe temperature range.

[0071] In this embodiment, the temperature sensing element 51, the first wire 52, and the second wire 53 together form a temperature measuring unit. It is understood that, to achieve more accurate temperature monitoring, multiple temperature measuring units can be arranged around the contact 12 of the high-voltage contactor 100. For example, multiple slot structures for mounting temperature measuring units can be provided on the first plate 3 around the periphery of the contact 12. This allows for more precise monitoring of the temperature of the high-voltage contactor 100 contact 12 through multiple temperature measuring units surrounding the contact 12. Multiple temperature measuring units can provide more detailed temperature distribution information, helping to analyze the heat conduction and heat source location of the contact 12, thereby better understanding the operating status of the equipment. In practical applications, the number of temperature measuring units needs to be balanced between cost and monitoring effectiveness. Too many temperature measuring units increase cost, installation complexity, and system maintenance difficulty, while too few may not meet the requirements for accurate monitoring. Therefore, when designing the temperature measuring unit arrangement scheme, cost, monitoring needs, and equipment characteristics should be comprehensively considered to achieve the best balance between economy and reliability.

[0072] Reference Figure 4 , Figure 9 , Figure 10 As shown, in one embodiment of this application, the receiving groove 4 includes a first groove structure 42, a second groove structure 43, and a second connecting port 44; wherein the first groove structure 42 is used to receive the temperature sensing element 51, and the side of the first groove structure 42 facing the through hole 31 has a first connecting port 41; the second groove structure 43 is used to receive the first wire 52 and the second wire 53, as shown. Figure 9As shown, a second communication port 44 is provided between the first slot structure 42 and the second slot structure 43. The second communication port 44 is used to connect the first slot structure 42 and the second slot structure 43, and to allow the first wire 52 and the second wire 53 housed in the second slot structure 43 to pass through the second communication port 44 and enter the first slot structure 42 for electrical connection with the temperature sensing element 51 disposed in the first slot structure 42.

[0073] In this embodiment, the receiving groove 4 can be a relatively sealed groove structure, thereby providing a sealed installation environment and sealing the temperature sensing element 51, the insulating heat-conducting element, the first wire 52, and the second wire 53 within the receiving groove 4. This arrangement reduces the convenience of later inspection and maintenance to some extent, because the above components are in a relatively sealed environment, making it impossible to directly perform inspection and maintenance operations. It is necessary to remove the corresponding components to open the receiving groove 4 and expose the internal temperature sensing element 51, the insulating heat-conducting element, the first wire 52, and the second wire 53 before subsequent inspection and maintenance can be carried out. Preferably, the receiving groove 4 in this embodiment should be set as an open structure, that is, in the Z direction (the thickness direction of the first plate 3), the first groove structure 42 has a first opening (not shown in the figure) on the side opposite to the upper surface 11, for the purpose of receiving... The temperature sensing element 51 is inserted into the first groove structure 42 through the first opening; the second groove structure 43 has a second opening on the side opposite to the upper surface 11 for inserting the first wire 52 and the second wire 53 into the second groove structure 43; this arrangement allows the temperature measuring component 5 to be conveniently installed in the receiving groove 4, and also allows for direct operation during later inspection and maintenance, reducing some intermediate operation procedures and improving the convenience of later inspection and maintenance; preferably, the first opening and the second opening can be connected, which allows the pre-assembled temperature measuring component 5 (temperature sensing element 51, first wire 52, second wire 53) to be directly inserted into the predetermined position in the receiving groove 4 through the first opening and the second opening, that is, the temperature sensing element 51 is inserted into the first groove structure 42, and the first wire 52 and the second wire 53 are inserted into the second groove structure 43.

[0074] Reference Figure 4 , Figure 9 As shown, in one embodiment of this application, the second groove structure 43 includes a first through groove 431 and a second through groove 432; as Figure 9As shown, the first through groove 431 is used to place the second wire 53, and the first through groove 431 has a first sidewall and a second sidewall disposed opposite to each other. A first protrusion 4311 protrudes from the side of the first sidewall facing the second sidewall, and a second protrusion 4312 protrudes from the side of the second sidewall facing the first sidewall. The first protrusion 4311 and the second protrusion 4312 are positioned opposite each other, and the space between the first protrusion 4311 and the second protrusion 4312 constitutes a clamping space for clamping the second wire 53; thus, the second wire 53 can be more easily clamped. Stable installation within the first through groove 431 ensures stable connection between it and the temperature sensing element 51; the first protrusion 4311 and the second protrusion 4312 form a set of clamping members. It is understood that multiple sets of clamping members can be provided within the first through groove 431. When multiple sets of clamping members are provided, they should be arranged at intervals along the length extension direction of the first through groove 431 to achieve uniform clamping of the second wire 53 located within the first through groove 431, thereby further improving the clamping and positioning effect of the second wire 53.

[0075] In this embodiment, the second through groove 432 is used to place the first wire 52, and the second through groove 432 has a third sidewall and a fourth sidewall disposed opposite to each other. A third protrusion 4321 protrudes from the side of the third sidewall facing the fourth sidewall, and a fourth protrusion 4322 protrudes from the side of the fourth sidewall facing the third sidewall. The third protrusion 4321 and the fourth protrusion 4322 are positioned opposite each other, and the space between the third protrusion 4321 and the fourth protrusion 4322 constitutes a clamping space for clamping the first wire 52; thus, the first wire 52 can be... The device is stably installed in the second through groove 432 to ensure the stability of its connection with the temperature sensing element 51. The third protrusion 4321 and the fourth protrusion 4322 form a set of clamping members. It can be understood that multiple sets of clamping members can be provided in the second through groove 432. When multiple sets of clamping members are provided, they should be arranged at intervals along the length extension direction of the second through groove 432 so as to achieve uniform clamping of the first wire 52 located in the second through groove 432, thereby further improving the clamping and positioning effect of the first wire 52.

[0076] In this embodiment, both the first through slot 431 and the second through slot 432 are connected to the second connecting port 44. This allows the second wire 53 to extend from the first through slot 431 through the second connecting port 44 into the first slot structure 42, and the first wire 52 to extend from the second through slot 432 through the second connecting port 44 into the first slot structure 42, thus achieving electrical connection with the temperature sensing element 51 within the first slot structure 42. In this embodiment, through the several protruding structures within the first through slot 431 and the second through slot 432, the second wire 53, the first wire 52, and the temperature sensing element 51 can be stably installed in the receiving slot 4, improving its operational stability.

[0077] Reference Figure 3 , Figure 8 , Figure 9 As shown, in one embodiment of this application, the inner diameter of the perforation 31 is larger than the outer diameter of the contact 12, so that the gap between the circumferential sidewall of the contact 12 and the inner wall of the perforation 31 forms a filling space 311. The first connecting port 41 connects the filling space 311 and the first groove structure 42. Since the first plate 3 is attached to the upper surface 11 of the high-voltage contactor 100, the upper surface 11 of the high-voltage contactor 100 achieves the effect of sealing the bottom of the filling space 311 located between the contact 12 and the inner wall of the perforation 31. The filling space 311 forms a connected groove structure through the first connecting port 41 and the receiving groove 4. In this embodiment, the insulating and thermally conductive component is a thermally conductive adhesive (the thermally conductive adhesive can be epoxy thermally conductive adhesive, thermally conductive silicone adhesive, etc.). The selection of suitable thermally conductive adhesives, such as thermally conductive potting compounds, requires comprehensive consideration of factors such as specific thermal conductivity requirements, insulation requirements, operating temperature range, and cost. The thermally conductive adhesive is filled into the receiving groove 4 and the potting space 311, meaning it is poured into the potting space 311 and the receiving groove 4. This arrangement ensures good contact between the thermally conductive adhesive and the peripheral wall of the contact 12. The thermally conductive adhesive is evenly filled into the potting space 311, ensuring complete coverage of the periphery of the contact 12, forming a continuous thermally conductive layer. This allows the temperature of different parts of the contact 12 to be transferred to the temperature sensing element 51 through the thermally conductive adhesive, thereby achieving good temperature monitoring of different parts of the periphery of the contact 12.

[0078] In this embodiment, filling the receiving groove 4 with thermally conductive components not only achieves good heat conduction and electrical insulation, but also further improves the fixation of the temperature sensing component 51, the first wire 52, and the second wire 53 within the receiving groove 4. The thermally conductive adhesive can fill the tiny gaps between the temperature sensing component 51, the wires, and the inner wall of the receiving groove 4, reducing the impact of mechanical vibration and impact on the components, thereby enhancing the mechanical stability of the components. After curing, the thermally conductive adhesive forms a layer with a certain strength, which can firmly fix the temperature sensing component 51 and the wires within the receiving groove 4, preventing them from loosening or shifting during equipment operation. Through the filling with thermally conductive adhesive, all components within the receiving groove 4 are encased in a sealed environment, forming an overall protective structure that prevents external dust, moisture, or contaminants from entering, thereby improving the reliability and service life of the temperature sensing component 5.

[0079] In this embodiment, considering cost savings, setting only one temperature measuring unit (that is, a set of matching temperature sensing elements 51, first wire 52, and second wire 53) and using thermally conductive adhesive around the contact 12 is an efficient and economical temperature monitoring solution; by conducting heat from different areas around the contact 12 to the temperature measuring component 5 through the thermally conductive adhesive, the overall temperature of the contact 12 can be monitored.

[0080] Reference Figure 5 , Figure 6 , Figure 7 As shown, in one embodiment of this application, the high-voltage contactor temperature monitoring component further includes a conductive adapter piece 6, wherein the conductive adapter piece 6 includes a first conductive adapter piece 61, a second conductive adapter piece 62, a third conductive adapter piece 63, and a fourth conductive adapter piece 64, and the first conductive adapter piece 61, the second conductive adapter piece 62, the third conductive adapter piece 63, and the fourth conductive adapter piece 64 are embedded inside the first plate 3; for example, the first plate 3 is an injection molded part, that is, it is manufactured by injection molding process; for example, it can be first... A conductive adapter piece 61, a second conductive adapter piece 62, a third conductive adapter piece 63, and a fourth conductive adapter piece 64 are punched at predetermined positions to form connecting holes. Then, the first conductive adapter piece 61, the second conductive adapter piece 62, the third conductive adapter piece 63, and the fourth conductive adapter piece 64 are placed into the corresponding molds, and molten plastic is poured into the molds to obtain the first plate 3 structure containing the first conductive adapter piece 61, the second conductive adapter piece 62, the third conductive adapter piece 63, and the fourth conductive adapter piece 64.

[0081] In this embodiment, as Figure 2 , Figure 8 As shown, the upper surface 11 of the high-voltage contactor 100 has two auxiliary contacts 13. One auxiliary contact 13 is connected to a third conductive adapter piece 63, and the other auxiliary contact 13 is connected to a fourth conductive adapter piece 64. The auxiliary contacts 13 pass through the connection holes pre-stamped on the third conductive adapter piece 63 and the fourth conductive adapter piece 64, thereby achieving electrical connection with their respective conductive adapter pieces 6. The other ends of the third conductive adapter piece 63 and the fourth conductive adapter piece 64 extend outward from the edge of the first plate 3. The end of the third and fourth conductive pieces extending outward from the first plate 3 also has the aforementioned connection hole, and this connection hole is used for electrical connection with the conductive post 8 (e.g., Figure 5 , Figure 6 As shown), the other end of the conductive post 8 is electrically connected to a corresponding connection terminal 7, such as... Figure 1 As shown, by inserting a wire harness adapter 10 into the connection terminal 7, the auxiliary contact 13 of the high-voltage contactor 100 is electrically connected to an external device; for example... Figure 2 , Figure 3 As shown, a hole should be provided through the first plate 3 at the position corresponding to the auxiliary contact 13 so that the auxiliary terminal can be exposed, and the positions where the connection holes of the third conductive adapter piece 63 and the fourth conductive adapter piece 64 are located within the aforementioned hole range.

[0082] In this embodiment, as Figure 10 As shown, auxiliary holes 32 are respectively provided on the first plate 3 at the ends of the first through slot 431 and the second through slot 432 away from the first slot structure 42. The portions of the first conductive adapter 61 and the second conductive adapter 62 embedded in the first plate 3 pass through the auxiliary holes 32, such that the end of the first wire 52 away from the temperature sensing element 51 is welded to the upper surface of the second conductive adapter 62, and the end of the second wire 53 away from the temperature sensing element 51 is welded to the upper surface of the first conductive adapter 61. For example, resistance welding can be used to weld the first wire 52 and the second wire 53 to their corresponding conductive adapter 6. During welding, two electric arc torches are first used... The electrode chucks respectively clamp the first wire 52 and the second conductive adapter piece 62 to be welded, with one electrode chuck positioned below and the other above. The first wire 52 and the second conductive adapter piece 62 are clamped through the auxiliary hole 32. Welding is completed after energizing (adjust the appropriate welding current according to the thickness, material, and size of the welding area; excessive current may cause overheating or burn-through of the welding area, while insufficient current may result in a weak weld). The welding process between the second wire 53 and the third conductive adapter piece 63 is the same and will not be elaborated further here. This achieves the electrical connection between the first wire 52, the second wire 53, and their corresponding conductive adapter pieces. Figure 5 , Figure 6 As shown, the other ends of the first conductive adapter piece 61 and the second conductive adapter piece 62 also extend outward from the edge of the first plate 3 and are connected to conductive posts 8. The lower end of the conductive posts 8 is electrically connected to the connection terminal 7, thereby realizing the electrical connection between the temperature measuring component 5 and the external control component.

[0083] In this embodiment, the high-voltage contactor 100 also has coil contacts (not shown in the figure), such as Figure 5As shown, the coil contacts also adopt the same connection method as the auxiliary contacts 13, which is through the conductive adapter 6 and extends to one side of the edge of the high-voltage contactor 100. By cooperating with the corresponding conductive post 8, and the lower end of the conductive post 8 is also electrically connected to the corresponding connection terminal 7, the electrical connection with external equipment is realized. In this embodiment, by setting the cooperating conductive adapter 6, conductive post 8, and connection terminal 7, the high-voltage contactor 100 and the temperature measuring component 5 are electrically connected to external equipment and external control components, thereby realizing the control of the high-voltage contactor 100 and the temperature monitoring of the high-voltage contactor 100.

[0084] In this embodiment, to reduce the number of connection terminals 7, only 5 connection terminals 7 can be provided (in reality, 6 connection terminals 7 are required, including 2 connection terminals 7 for auxiliary contacts 13, 2 connection terminals 7 for temperature sensing components 5, and 2 connection terminals 7 for coil contacts). This allows the 2 connection terminals 7 of the temperature sensing components 5 to be provided separately, and the connection terminals 7 at the input ends of the auxiliary contacts 13 and the coil contacts to be integrated into one, or the connection terminals 7 at the output ends of the auxiliary contacts 13 and the coil contacts to be integrated into one. This arrangement reduces the number of connection terminals 7 by one, so that the high-voltage contactor 100 is only provided with 5 connection terminals 7 at the time of manufacture, thereby reducing the number of connection terminals 7. In subsequent use, users can make adaptive adjustments to the connection terminals 7 according to the actual operating conditions to meet their usage requirements.

[0085] In this embodiment, by setting a conductive adapter 6 to electrically connect the auxiliary contact 13, coil contact, and temperature measuring component 5 of the high-voltage contactor 100 to external equipment and external control components, it helps to improve the automation level of the manufacturing process. Since the conductive adapter 6 is a rigid structural component, it can be clamped by a robot or a clamp. Compared with the connection method using flexible wires, it can reduce the manual operation process to a certain extent, thereby improving the automation level of production.

[0086] In this embodiment, as Figure 2 , Figure 3 , Figure 5 As shown, to ensure the electrical safety of the conductive post 8, an adapter plate 9 is provided to insulate and isolate the conductive post 8 from external equipment; as Figure 2 , Figure 3 As shown, a first adapter plate 91 is provided on one side of the high-voltage contactor 100, and the conductive posts 8, which are electrically connected to the first conductive adapter piece 61, the second conductive adapter piece 62, the third conductive adapter piece 63, and the fourth conductive adapter piece 64, are enclosed within the first adapter plate 91. The first adapter plate 91 is an insulating structural component, ensuring the safety of the electrical connection; similarly, as... Figure 5As shown, a second adapter plate 92 is also provided, which encloses the conductive post 8 connected to the conductive adapter piece corresponding to the coil contact within the second adapter plate 92, so that the conductive post 8 corresponding to the coil contact is insulated and isolated from external equipment.

[0087] Reference Figures 1-3 , Figures 11-13 As shown, in one embodiment of this application, the outer casing 2 includes a housing 21 and a cover 22; in the Z direction, an upper surface 11 is formed on the upper end face of the contactor body 1 and a contact 12 is formed on the upper surface 11; as Figure 13 As shown, the housing 21 has a receiving cavity 211. In the Z direction, one side of the receiving cavity 211 has a first inlet for inserting the contactor body 1 into the receiving cavity 211; as Figure 1 As shown, the cover 22 is placed on the upper end face of the housing 21 to block the first inlet, and the cover 22 and the housing 21 together form a placement cavity for placing the contactor body 1; as Figure 11 As shown, in the Z direction, a through hole 225 is provided on the side of the cover 22 away from the housing 21, for allowing the contact 12 to extend outward through the through hole 225 into the placement cavity (e.g. Figure 1 (As shown), while the temperature measuring part is located between the upper surface 11 and the cover 22; as Figure 1 , Figure 2 , Figure 3 As shown, on one side of the high-voltage contactor 100 along the Y direction, the sidewalls of both the cover 22 and the housing 21 protrude outwards, so that the interior of the protruding portion forms a space for accommodating the first adapter plate 91 and the second adapter plate 92; as Figure 13 As shown, a protective shell is integrally provided at the bottom of the housing 21 along the Y direction, and the connection terminal 7 is provided inside the protective shell. The protective shell has a plug-in space for plugging in the wire harness adapter 10 to realize the electrical connection between the high voltage contactor 100 and external equipment.

[0088] In this embodiment, as Figures 1-3 As shown, the upper surface of the contactor body 1 has two contacts that are spaced apart along the Y direction, as... Figure 11 As shown, a baffle plate 226 extending in the Y direction is integrally provided on the upper end surface of the cover 22, and the two contacts 12 are respectively located on both sides of the baffle plate 226. The baffle plate 226 separates the two contacts 12, so that no electric arc is generated between the two contacts 12 during the process of energizing or de-energizing the high voltage contactor 100, thereby improving the safety of the high voltage contactor 100 during operation.

[0089] Reference Figure 2 As shown in one embodiment of this application, in the X direction, the two side walls of the contactor body 1 are spaced apart from the inner side wall of the housing 21, forming a clearance space 213; as Figure 11As shown, in the X direction, extension plates 221 are protruding from the bottom ends of the two side walls of the cover 22 along the Z direction. The extension plates 221 extend along the Z direction, and a protrusion 222 is protruding from the side of the extension plates 221 opposite to the contactor body 1; as Figure 13 As shown, on both sides of the housing 21 along the X direction, there are respectively snap-fit ​​holes 212 that engage with the protrusions 222. In the X direction, the snap-fit ​​holes 212 penetrate through the side walls of the housing 21. When the cover 22 is placed on the housing 21, the extension plates 221 located on both sides of the cover 22 along the X direction are first inserted into the clearance space 213, so that when the bottom of the cover 22 presses against the upper end face of the housing 21, the protrusions 222 on the extension plates 221 are correspondingly snapped into the snap-fit ​​holes 212 (e.g., ...). Figure 1 As shown), this achieves a snap-fit ​​connection between the cover 22 and the housing 21. Through the cooperation of the protrusion 222 and the snap-fit ​​hole 212, the cover 22 is securely installed on the housing 21 and a placement cavity for placing the contactor body 1 is formed.

[0090] In this embodiment, the extension plate 221 is spaced a certain distance from the outer wall of the cover 22, thereby providing space for forming a protrusion 222 on the side of the extension plate 221 away from the contactor body 1. When the cover 22 is placed on the housing 21, the protrusion 222 on the extension plate 221 is first squeezed by the inner wall of the housing 21, and the extension plate 221 deforms in the direction closer to the contactor body 1 (during subsequent movement, the protrusion 222 presses against the inner wall of the housing 21). When the protrusion 222 moves to a preset position in the Z direction with the cover 22 (at which time the protrusion 222 and the snap-fit ​​hole 212 are in the same position), the protrusion 222 snaps into the snap-fit ​​hole 212. In order to further improve the connection stability between the cover 22 and the housing 21, the side wall of the extension plate 221 away from the contactor body 1 can be fitted to the inner wall of the housing 21.

[0091] In this embodiment, when the cover 22 is placed on the housing 21, in order to facilitate the protrusion 222 to easily pass over the side wall of the housing 21, an inclined surface should be provided below the protrusion 222 so that when the protrusion 222 is squeezed by the inner side wall of the housing 21 under the guidance of the inclined surface, the extension plate 221 is forced to deform in the direction closer to the contactor body 1.

[0092] Reference Figure 2 , Figure 3 As shown, in one embodiment of this application, in the Z direction, the contactor body 1 extends at least partially upwards from the end near the cover 22 into the receiving cavity 211; as Figure 11As shown, the cover 22 has an auxiliary cavity 223, which has a second inlet on the side facing the housing 21 in the Z direction; when the cover 22 is placed on the housing 21, the auxiliary cavity 223 and the receiving cavity 211 constitute a placement cavity for placing the contactor body 1; as shown Figure 11 , 12 As shown, in the Z direction, the auxiliary cavity 223 has a strip-shaped protrusion 224 on the side away from the receiving cavity 211. When the cover 22 is placed on the housing 21, the strip-shaped protrusion 224 presses against the upper end face of the first plate 3, thereby allowing the first plate 3 to be more stably placed on the upper surface 11 of the contactor body 1. At the same time, the strip-shaped protrusion 224 is equivalent to a reinforcing rib, which helps to improve the structural strength of the cover 22.

[0093] In this embodiment, to facilitate distinguishing the installation position of the temperature measuring component 5 on the first plate 3, an upwardly protruding extension section (e.g., ...) can be integrally provided on the first plate 3 and around the edge of the receiving groove 4. Figure 4 As shown), this makes the location for installing the temperature sensing component 5 clearly visible; as Figure 12 As shown, since the upper end face of the first plate 3 is provided with an extension section, it is necessary to adapt the height of the strip-shaped protrusion 224 on the cover 22 to the position corresponding to the extension section in the Z direction. That is, the height of the strip-shaped protrusion 224 corresponding to the extension section should be slightly smaller, so that when the cover 22 is placed on the shell 21, the strip-shaped protrusion 224 that does not correspond to the extension section can press against the upper end face of the first plate 3, while the part of the strip-shaped protrusion 224 corresponding to the extension section can also press against the upper end face of the extension section.

[0094] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A high-voltage contactor having intersecting X-direction and Z-direction axes, characterized in that, include: The outer casing has a cavity for placement; The contactor body is housed within the placement cavity; On one side in the Z direction, the contactor body has an upper surface, and the contacts of the contactor body extend outward from the upper surface; and A temperature measuring unit is provided on the upper surface for monitoring the temperature of the contacts of the contactor body.

2. The high-voltage contactor as described in claim 1, characterized in that, The temperature measuring unit includes: A first plate is disposed on the upper surface, and a through hole is provided in the first plate along the Z direction, through which the contact protrudes upward; at least a portion of the upper end face of the first plate is provided with a receiving groove, the receiving groove having a first communication opening communicating with the through hole; and The temperature measuring component is housed within the receiving groove; An insulating and heat-conducting component is disposed within the receiving groove and in contact with the temperature measuring component. The insulating and heat-conducting component is at least partially in contact with the contactor through the first communication port.

3. The high-voltage contactor as described in claim 2, characterized in that, The temperature measuring component includes: A temperature sensing element is disposed within the receiving groove; and A first wire, one end of which is electrically connected to the temperature sensing element; The second wire, one end of which is electrically connected to the temperature sensing element; The other end of the first wire and the second wire is used for electrical connection with external control components.

4. The high-voltage contactor as described in claim 3, characterized in that, The receiving slot includes: A first groove structure is used to accommodate the temperature sensing element, and the first groove structure has a first communication opening on the side facing the perforation; and The second groove structure is used to accommodate the first wire and the second wire; A second connecting port is provided between the first slot structure and the second slot structure, and the second connecting port is used to connect the first slot structure and the second slot structure. In the Z direction, the first groove structure has a first opening on the side opposite to the upper surface for placing the temperature sensing element in the first groove structure; the second groove structure has a second opening on the side opposite to the upper surface for placing the first wire and the second wire in the second groove structure.

5. The high-voltage contactor as described in claim 4, characterized in that, The second groove structure includes: A first through groove is used to place the first wire. The first through groove has a first sidewall and a second sidewall disposed opposite to each other. The first sidewall has at least one first protrusion on the side facing the second sidewall, and the second sidewall has at least one second protrusion on the side facing the first sidewall. The first protrusion and the second protrusion are positioned opposite each other, and the gap between the first protrusion and the second protrusion forms a clamping space for clamping the first wire. The second through groove is used to place the second wire. The second through groove has a third sidewall and a fourth sidewall disposed opposite to each other. The third sidewall is provided with at least one third protrusion on the side facing the fourth sidewall, and the fourth sidewall is provided with at least one fourth protrusion on the side facing the third sidewall. The third protrusion and the fourth protrusion are positioned opposite each other, and the gap between the third protrusion and the fourth protrusion forms a clamping space for clamping the second wire. Both the first through slot and the second through slot are connected to the second connecting port.

6. The high-voltage contactor as described in claim 3, characterized in that, The high-voltage contactor also includes: A first conductive adapter piece is embedded in the first plate, and one end of the first conductive adapter piece is used for electrical connection with the first wire; and The second conductive adapter piece is embedded in the first plate, and one end of the second conductive adapter piece is used to electrically connect with the second wire; The other ends of the first conductive adapter piece and the second conductive adapter piece extend at least partially outward from the first plate for electrical connection with the external control component.

7. The high-voltage contactor as described in any one of claims 2-6, characterized in that, The inner diameter of the perforation is larger than the outer diameter of the contact, so that the gap between the circumferential sidewall of the contact and the inner wall of the perforation forms a filling space, and the first communication port is connected to the filling space and the receiving groove; The insulating and thermally conductive component is a thermally conductive adhesive, and the thermally conductive adhesive fills the receiving groove and the filling space.

8. The high-voltage contactor as described in any one of claims 2-6, characterized in that, The first plate is an insulating structural component.

9. The high-voltage contactor as described in claim 1, characterized in that, The outer casing includes: A housing having a receiving cavity, wherein, in the Z direction, one side of the receiving cavity has a first inlet for inserting the contactor body into the receiving cavity; and A cover is provided on the housing so that the cover and the housing together form the placement cavity for placing the contactor body; in the Z direction, the cover has a through hole on the side away from the housing so that the contact extends out of the placement cavity through the through hole.

10. The high-voltage contactor as described in claim 9, characterized in that, In the X direction, the two side walls of the contactor body are spaced apart from the inner side wall of the housing, forming a clearance space; In the X direction, extension plates are provided on both sides of the cover, and protrusions are provided on the side of the extension plates opposite to the contactor body; In the X direction, the two side walls of the housing are respectively provided with snap-fit ​​holes that engage with the protrusions, and the snap-fit ​​holes penetrate the side walls of the housing along the X direction; The cover is placed over the housing, so that the extension plate is inserted into the clearance space and the protrusion is engaged in the corresponding engagement hole.

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