Alternating-current quick-plug charging socket
By designing circuit boards and related components in AC charging sockets, accurate monitoring of socket temperature is solved, and the problems of inaccurate temperature sensing and complex assembly in the existing technology are solved, meeting the needs of production and host manufacturers.
Patent Information
- Application Number
- CN202420426642.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-03-06
AI Technical Summary
The existing AC charging sockets have problems such as insufficient temperature measurement and complicated assembly in terms of temperature sensing, which cannot meet the requirements of manufacturers and host manufacturers.
An AC fast plug charging socket is designed, using circuit board, power hole, power contact, copper clad ring, copper clad layer, patch resistor, signal pin and eight-core plug-in, and the socket temperature is monitored through these components. , instead of traditional temperature sensors, the temperature measurement is measured using circuit board integration.
It realizes accurate monitoring of socket temperature, low cost, high measurement accuracy, simple assembly and high degree of automation, and can meet the requirements of manufacturers and host manufacturers.
Smart Images
Figure CN222441033U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric vehicles, in particular to an AC quick-plug charging socket for new energy vehicles. Background Art
[0002] As the energy input interface of electric vehicles, the AC charging socket is an indispensable part of electric vehicles.
[0003] In the existing AC charging socket, the temperature sensor has two separate wires that are fixed to the contact piece with a heat shrink tube. There are inconsistencies between the individual wires, resulting in inaccurate temperature measurement and cumbersome assembly. This cannot meet the manufacturer's requirements for assembly efficiency and the host manufacturer's requirements for temperature measurement accuracy. Utility Model Content
[0004] In order to solve the above problems, the utility model provides an AC quick-plug charging socket.
[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an AC quick-plug charging socket, including an insulator, a panel for fixed installation with a vehicle body is arranged on the front side of the insulator, a tail cover for sealing a wiring harness is arranged on the rear side of the insulator, a circuit board is arranged inside the insulator, 5 power holes are opened on the circuit board, a copper ring and a power contact are arranged in the power hole, the front end of the power contact is used to connect the charging plug, and the rear end is ultrasonically welded to the wiring harness connected to the vehicle body, a copper layer connected to the copper ring is arranged inside the circuit board, 4 chip resistors connected to the copper layer and 8 signal pins are arranged on the circuit board, the 8 signal pins are connected to an eight-core plug-in, and the eight-core plug-in is connected to the vehicle control system through a signal line.
[0006] By adopting the above technical scheme, a circuit board, a power hole, a power contact, a copper clad ring, a copper clad layer, a chip resistor, a signal pin and an eight-core plug-in are arranged, and the heat generated by the power contact is transferred to the chip resistor through the copper clad ring and the copper clad layer, and then transferred to the control system through the signal pin and the eight-core plug-in, so as to realize the monitoring of the socket temperature, adopt chip resistors instead of traditional temperature sensors, and utilize circuit board integration for temperature measurement, which has low cost, high measurement accuracy, simple assembly, high degree of automation, and can meet the requirements of manufacturers and host manufacturers.
[0007] Furthermore, a hollow plug-in post is provided at the front end of the insulator and is covered on the outside of the power contact piece, and a split groove is provided on the lower side of the plug-in post along its length direction.
[0008] By adopting the above technical solution, a hollow plug post is provided to protect the power contact to prevent the power contact from being exposed, and a split groove is provided on the lower side of the plug post. When water enters the front end of the socket, the water can flow out from the split groove, thereby improving the waterproof level.
[0009] Furthermore, the rear ends of the five hollow plug posts of the insulator are secondary-injected with an annular sealing plug, which is used for sealing contact with the power contact piece on the circuit board.
[0010] By adopting the above technical solution, an annular sealing plug is secondary-injected at the rear end of the five hollow plug-in posts, thereby ensuring the waterproof performance between the contact piece and the insulator and also eliminating the process of assembling the sealing plug.
[0011] Furthermore, the insulator is provided with a guide column and a fixing column, and the circuit board is correspondingly provided with a guide hole and a fixing hole, the guide column cooperates with the guide hole, and the fixing column cooperates with the fixing hole.
[0012] By adopting the above technical solution, the assembly between the circuit board and the insulator is facilitated by the cooperation between the guide column and the guide hole, and the circuit board and the insulator are fixed together by the cooperation between the fixing column and the fixing hole.
[0013] Furthermore, a step groove is provided on the front side of the insulator, an annular groove is provided on the side of the panel adjacent to the insulator, a plug-in rubber ring is provided between the step groove and the annular groove, an outer convex rib is provided on the rear side of the plug-in rubber ring, and an inner convex rib is provided on the inner wall of the plug-in rubber ring.
[0014] By adopting the above technical solution, a step groove, an annular groove and a plug-in rubber ring are provided to perform waterproof sealing between the insulator and the panel.
[0015] Furthermore, a sealing ring cooperating with the insulator is arranged on one side of the tail cover adjacent to the insulator, a buckle is arranged on the side of the tail cover protruding toward the insulator, a boss is correspondingly arranged on the outer wall of the insulator, and the buckle and the boss form a snap fit.
[0016] By adopting the above technical solution, a sealing ring is arranged on the side of the tail cover close to the insulator to ensure the sealing between the tail cover and the insulator, and the tail cover is fixed on the insulator by the snap fit formed by the buckle and the boss.
[0017] Furthermore, the rear end of the tail cover is provided with 5 fixed tubes for the wiring harness to pass through, the fixed tube is provided with a sealing rubber ring that is in sealing contact with the wiring harness and a rear cover arranged on the rear side of the sealing rubber ring, the outer wall of the rear cover is provided with a wedge-shaped clamping platform, the wall of the fixed tube is provided with a corresponding clamping port, and the front end of the tail cover is also provided with a small front and a large rear claw corresponding to the fixed tube position.
[0018] By adopting the above technical solution, a fixing tube, a sealing rubber ring and a rear cover are arranged to seal the gap between the wiring harness and the rear cover.
[0019] Furthermore, the tail cover is provided with a plurality of mounting holes, and the insulator is correspondingly provided with connecting holes, and the mounting holes and the connecting holes are connected by screws.
[0020] By adopting the above technical solution, a mounting hole and a connecting hole are provided, and the tail cover is fixedly connected to the insulator by screws, thereby improving the tightness of the connection.
[0021] To sum up, the utility model has the following beneficial effects: in this application, by setting a circuit board, a power hole, a power contact, a copper clad ring, a copper clad layer, a chip resistor, a signal pin and an eight-core plug-in, the heat generated by the power contact is transferred to the chip resistor through the copper clad ring and the copper clad layer, and then transferred to the control system through the signal pin and the eight-core plug-in, so as to realize the monitoring of the socket temperature, and use chip resistors instead of traditional temperature sensors, and utilize circuit board integration for temperature measurement, which has low cost, high measurement accuracy, simple assembly, high degree of automation, and can meet the requirements of manufacturers and host manufacturers. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 , 2 It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0023] Figure 3 It is a side structural schematic diagram of an embodiment of the utility model;
[0024] Figure 4 It is a schematic cross-sectional structure diagram of an embodiment of the utility model;
[0025] Figure 5 yes Figure 4 An enlarged schematic diagram of part A.
[0026] Figure 6 yes Figure 4 A magnified schematic diagram of part B;
[0027] Figure 7 , 8 It is a schematic diagram of the structure of the insulator of the embodiment of the utility model at two different angles;
[0028] Fig. 9 This is a schematic diagram of the structure of the tail cover of the utility model embodiment;
[0029] Fig.10 It is a schematic diagram of the structure of the circuit board of the embodiment of the utility model.
[0030] In the figure: 10, insulator; 11, hollow plug post; 12, split groove; 13, annular sealing plug; 14, guide post; 15, fixing post; 16, step groove; 17, boss; 18, connecting hole; 20, panel; 21, annular groove; 30, tail cover; 31, sealing ring; 32, buckle; 33, fixing tube; 34, sealing rubber ring; 35, back cover; 36, wedge-shaped card platform; 37, bayonet; 38, claw; 39, mounting hole; 40, circuit board; 41, power hole; 42, power contact; 43, chip resistor; 44, signal pin; 45, eight-core plug-in; 46, guide hole; 47, fixing hole; 50, plug-in rubber ring; 51, outer convex rib; 52, inner convex rib; 60, screw. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.
[0032] like Figure 1-10 As shown, the embodiment of the present application discloses an AC quick-plug charging socket, including an insulator 10, a panel 20 and a tail cover 30. The panel 20 is arranged at the front end of the insulator 10, and is provided with four screw holes 60 for fixing with the vehicle body. The tail cover 30 is arranged at the rear side of the insulator 10, and is used to seal the rear end of the insulator 10 and the wiring harness connected to the vehicle body.
[0033] A circuit board 40 is arranged in the insulator 10, and 5 power holes 41 are opened on the circuit board 40, and each power hole 41 is provided with a copper ring and a power contact 42. The step of the power contact 42 is stuck in the power hole 41, and its front end extends toward the panel 20 for connecting the charging plug, and its rear end extends toward the tail cover 30 for connecting with the wiring harness connected to the vehicle body. The power contact 42 is fixed to the wiring harness by ultrasonic welding, and the welding resistance is small and the temperature rise is low, which avoids the risk of high temperature burning of the charging socket. The copper ring is arranged on the inner wall of the power hole 41. When the power contact 42 is inserted into the power hole 41, the step of the power contact 42 will be clamped on the inner wall of the copper ring. A copper layer connected to the copper ring is also arranged inside the circuit board 40, and 4 chip resistors 43 and 8 signal pins 44 connected to the copper layer are arranged on the circuit board 40. The 8 signal pins 44 are connected to the eight-core plug-in 45, and the eight-core plug-in 45 is connected to the vehicle control system through a signal line. The heat generated by the power contact 42 after being energized and heated is transferred to the chip resistor 43 through the copper-clad ring and the copper-clad layer, and then transferred to the control system through the signal pin 44 and the eight-core plug-in 45, so as to monitor the socket temperature. The invention has low cost, high measurement accuracy, simple assembly and high automation, and can meet the requirements of manufacturers and host manufacturers.
[0034] The insulator 10 is made of insulating material, and is provided with a guide column 14 and a fixing column 15 therein, and a guide hole 46 and a fixing hole 47 are correspondingly provided on the circuit board 40. During assembly, the guide hole 46 on the circuit board 40 is aligned with the guide column 14 on the insulator 10 and inserted to ensure the installation angle of the circuit board 40; at the same time, the fixing hole 47 on the circuit board 40 will cooperate with the fixing column 15 on the insulator 10, and the front end of the fixing column 15 is in the shape of an open pin. After insertion, the front end of the fixing column 15 opens so that the circuit board 40 is fixed in the insulator 10. A hollow plug-in column 11 is also provided at the front end of the insulator 10, which is covered on the outside of the power contact 42. The hollow plug-in column 11 is used to protect the power contact 42 and prevent the power contact 42 from being exposed. There is a split groove 12 on the lower side of the plug-in column along its length direction, so that the water in the plug-in column can flow down from the split groove 12 to prevent water accumulation in the plug-in column from affecting the safety of electricity use. Further, an annular sealing plug 13 is provided at the rear end of the eight hollow plug posts 11 of the insulator 10. The annular sealing plug 13 includes eight small sealing plugs, each of which is used to seal between the corresponding power contact 42 and the plug post to prevent water or dust from entering the interior and affecting the safety of the circuit board 40. During production, the eight small sealing plugs are connected together to form an annular sealing plug 13, and the annular sealing plug 13 is secondary injection molded on the insulator 10, so that the small sealing plugs do not need to be installed one by one during assembly, which simplifies the assembly process and improves assembly efficiency.
[0035] A step groove 16 is provided on the front side of the insulator 10, and an annular groove 21 is provided on the side of the panel 20 adjacent to the insulator 10. A plug-in rubber ring 50 is provided between the step groove 16 and the annular groove 21. The rear end of the plug-in rubber ring 50 is sleeved on the step groove 16 of the insulator 10, and the front end is inserted into the annular groove 21 of the panel 20. An outer convex rib 51 is provided outwardly on the rear side of the plug-in rubber ring 50. The end face of the step groove 16 of the insulator 10 and the outer wall end face of the annular groove 21 of the panel 20 tighten the outer convex rib 51 on both sides of the outer convex rib 51, thereby ensuring the sealing performance of the connection between the panel 20 and the insulator 10. Lugs and assembly holes are provided at the corresponding ends of the insulator 10 and the panel 20 so as to be fixed by screw connection. A plurality of inner convex ribs 52 are provided on the inner wall of the plug-in rubber ring 50 so that when the charging plug is inserted into the plug-in post, the inner convex ribs 52 fit the outer wall of the charging plug to seal and prevent water, dust and other foreign matter from entering during the charging state. During assembly, the plug-in rubber ring 50 is first put on the insulator 10, and then the annular groove 21 of the panel 20 is aligned with the plug-in rubber ring 50 and inserted, and then screwed to achieve the installation between the panel 20 and the insulator 10.
[0036] A sealing ring 31 cooperating with the insulator 10 is provided on the side of the tail cover 30 adjacent to the insulator 10 to ensure the sealing effect between the tail cover 30 and the insulator 10. A buckle 32 is provided on the side of the tail cover 30 protruding toward the insulator 10, and a boss 17 is correspondingly provided on the outer wall of the insulator 10. The buckle 32 and the boss 17 form a snap fit to realize the assembly of the tail cover 30 and the insulator 10. Five fixed tubes 33 for the wire harness to pass through are provided at the rear end of the tail cover 30. A sealing rubber ring 34 in sealing contact with the wire harness and a rear cover 35 arranged at the rear side of the sealing rubber ring 34 are provided in the fixed tube 33. A wedge-shaped clamping platform 36 is provided on the outer wall of the rear cover 35. A clamping port 37 is correspondingly provided on the wall of the fixed tube 33. The wedge-shaped clamping platform 36 cooperates with the clamping port 37 to realize the assembly between the rear cover 35 and the fixed tube 33. At the front end of the tail cover 30, corresponding to the position of the fixing tube 33, there is also a claw 38 with a small front and a large rear, which is used to fix the wiring harness and the power contact 42. There are also a number of mounting holes 39 on the tail cover 30, and corresponding connecting holes 18 are set on the insulator 10. The mounting holes 39 and the connecting holes 18 are connected by screws 60 to ensure the stable connection between the tail cover 30 and the insulator 10. During assembly, first fix the connection between the wiring harness and the power contact 42 by ultrasonic welding, and then put the back cover 35 and the sealing rubber ring 34 on the wiring harness; assemble the tail cover 30 to the insulator 10, and pre-install it by snapping the buckle 32 with the boss 17. At this time, due to the existence of the sealing ring 31, there will be a gap between the tail cover 30 and the insulator 10; insert the power contact 42 inward from the fixing tube 33 of the tail cover 30, and the power contact 42 successively passes through the fixing tube 33, the claw 38, and the power hole 41 to reach the plug-in column. At this time, the claw 38 is stretched open, and when the power contact After the step of 42 passes over the claw 38, the claw 38 retracts, causing the power contact 42 to be unable to retreat, thereby limiting the power contact 42 and the wiring harness in the axial direction; the rear cover 35 and the sealing rubber ring 34 are pushed into the fixed tube 33 along the wiring harness, so that the wedge-shaped clamping platform 36 of the rear cover 35 is clamped into the clamping mouth 37 of the fixed tube 33, thereby fixing the rear cover 35 and the fixed tube 33, and the sealing rubber ring 34 is used for sealing between the wiring harness and the fixed tube 33; then the screw 60 is passed through the mounting hole 39 and the connecting hole 18 to achieve fastening, thereby completing the assembly between the tail cover 30 and the insulator 10.
[0037] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. An AC quick-plug charging socket, characterized by: The invention comprises an insulator (10), wherein a panel (20) for fixing with a vehicle body is arranged at the front side of the insulator (10), a tail cover (30) for sealing a wiring harness is arranged at the rear side of the insulator (10), a circuit board (40) is arranged inside the insulator (10), five power holes (41) are opened on the circuit board (40), a copper ring and a power contact (42) are arranged inside the power hole (41), the front end of the power contact (42) is used to connect with a charging plug, and the rear end is ultrasonically welded with a wiring harness connected to the vehicle body, a copper layer connected with the copper ring is arranged inside the circuit board (40), four chip resistors (43) and eight signal pins (44) connected with the copper layer are arranged on the circuit board (40), the eight signal pins (44) are connected to an eight-core plug-in (45), and the eight-core plug-in (45) is connected to a vehicle control system through a signal line.
2. The AC quick-plug charging socket according to claim 1, characterized in that: The front end of the insulator (10) is provided with a hollow plug-in post (11) which is covered on the outside of the power contact piece (42), and a split groove (12) is formed on the lower side of the plug-in post along its length direction.
3. The AC quick-plug charging socket according to claim 2, characterized in that: The rear ends of the five hollow plug posts (11) of the insulator (10) are provided with an annular sealing plug (13) by secondary injection molding, and the annular sealing plug (13) is used for sealing contact with a power contact piece (42) on a circuit board (40).
4. The AC quick-plug charging socket according to claim 1, characterized in that: A guide column (14) and a fixing column (15) are arranged in the insulator (10), and a guide hole (46) and a fixing hole (47) are correspondingly arranged on the circuit board (40); the guide column (14) cooperates with the guide hole (46), and the fixing column (15) cooperates with the fixing hole (47).
5. The AC quick-plug charging socket according to claim 1, characterized in that: The front side of the insulator (10) is provided with a step groove (16), the side of the panel (20) adjacent to the insulator (10) is provided with an annular groove (21), a plug-in rubber ring (50) is provided between the step groove (16) and the annular groove (21), an outer convex rib (51) is provided on the rear side of the plug-in rubber ring (50), and an inner convex rib (52) is provided on the inner wall of the plug-in rubber ring (50) protruding inwardly.
6. The AC quick-plug charging socket according to claim 1, characterized in that: A sealing ring (31) cooperating with the insulator (10) is arranged on one side of the tail cover (30) adjacent to the insulator (10); a buckle (32) is arranged on the side of the tail cover (30) protruding toward the insulator (10); a boss (17) is correspondingly arranged on the outer wall of the insulator (10); and the buckle (32) and the boss (17) form a snap fit.
7. The AC quick-plug charging socket according to claim 6, characterized in that: The rear end of the tail cover (30) is provided with five fixed tubes (33) for the wire harness to pass through, the fixed tubes (33) are provided with a sealing rubber ring (34) in sealing contact with the wire harness, and a rear cover (35) is provided on the rear side of the sealing rubber ring (34), a wedge-shaped clamping platform (36) is provided on the outer wall of the rear cover (35), a clamping opening (37) is correspondingly provided on the wall of the fixed tube (33), and a clamping claw (38) with a smaller front and a larger rear is also provided at the front end of the tail cover (30) corresponding to the fixed tube (33).
8. The AC quick-plug charging socket according to claim 7, characterized in that: The tail cover (30) is also provided with a plurality of mounting holes (39), and the insulator (10) is correspondingly provided with connecting holes (18), and the mounting holes (39) and the connecting holes (18) are connected via screws (60).