A high-voltage wiring harness for power batteries

Abstract

This utility model discloses a high-voltage wiring harness for a power battery, including a wiring harness body. Both ends of the wiring harness body are provided with plug assemblies, and each plug assembly is detachably provided with a socket assembly. Each plug assembly includes a plug housing and an end cap. The end cap is inserted into one side of the plug housing. The plug housing contains a mounting plate and a terminal assembly. The shielding cover of this utility model has multiple teeth arranged in an annular pattern at equal intervals at both ends. The teeth at one end of the shielding cover tightly hook into a locking ring, while the teeth at the other end of the shielding cover are stably locked by a locking groove. Both ends of the shielding cover are stably fixed, ensuring stable installation of the shielding cover. This solves the problem of electromagnetic shielding failure due to unstable installation of the shielding cover, which could interfere with vehicle bus communication, sensor signals, and vehicle Ethernet, and in severe cases, threaten driving safety.

Description

Technical Field

[0001] This utility model relates to a high-voltage wiring harness for power batteries. Background Technology

[0002] High-voltage wiring harnesses for power batteries are specialized connection systems used to safely and efficiently transmit high-current, high-voltage electrical energy between high-voltage system components in electric vehicles. These harnesses typically consist of wires and connectors, with the connectors usually comprising plugs and sockets. The plug of the connector typically houses a shield to resist external electromagnetic interference and prevent internal electromagnetic interference from being emitted outwards. The installation stability of the shield on the plug of the high-voltage wiring harness is crucial. Poor installation stability can easily lead to electromagnetic shielding failure, thereby interfering with vehicle bus communication, sensor signals, and in-vehicle Ethernet, and in severe cases, threatening driving safety. Therefore, developing a high-voltage wiring harness for power batteries with good shield installation stability is of significant practical importance. Utility Model Content

[0003] The purpose of this invention is to provide a high-voltage wiring harness for power batteries to solve the problems mentioned in the background art.

[0004] To solve the above problems, the present invention adopts the following technical solution: A high-voltage wiring harness for a power battery includes a harness body. Both ends of the harness body are provided with plug assemblies. Each plug assembly has a detachable socket assembly. Each plug assembly includes a plug housing and an end cap. The end cap is inserted into one side of the plug housing. The plug housing contains a mounting plate and a terminal assembly. The mounting plate is fixedly connected to the inner wall of the plug housing. Two mounting rings are fixedly disposed on one side of the mounting plate. Each mounting ring has a shielding assembly on one side. The shielding assembly includes an inner cylinder and a shielding cover. One end of the inner cylinder is threadedly connected to the mounting ring. The shielding cover is disposed on the outer side of the inner cylinder. A locking ring is fixedly disposed at one end of the inner cylinder. The outer wall of the locking ring has multiple outer grooves, and the inner wall of the locking ring has multiple inner grooves. The side wall of the other end of the inner cylinder has multiple locking slots. Both ends of the shielding cover have multiple teeth arranged in annular intervals. The teeth at one end of the shielding cover pass through the inner grooves, and after bending, they engage with the corresponding outer grooves. The teeth at the other end of the shielding cover are bent towards the inside of the locking slots.

[0005] Preferably, the main body of the wire harness includes a protective sleeve and wires. The protective sleeve is disposed between two plug assemblies. There are two wires, both of which pass through the protective sleeve. Both ends of the protective sleeve are provided with heat shrink tubing.

[0006] Preferably, there are two terminal assemblies. Each terminal assembly includes a terminal head. The mounting plate has a through hole corresponding to the terminal head. The terminal head passes through the through hole on the mounting plate. One end of the terminal head is connected to a conductive cylinder. One end of the wire is inserted into the conductive cylinder. An auxiliary ring is provided on the outside of the connection between the wire and the conductive cylinder.

[0007] Preferably, the mounting plate has a mounting groove on the side wall of the through hole corresponding to the first end, and the first end has a wing piece that engages with the mounting groove.

[0008] Preferably, the socket assembly includes a socket plate and a socket cover. The socket cover is fixed to the socket plate. The socket plate is provided with two terminal assemblies, each terminal assembly including a conductive block, a second end, and a third end. The third end and the second end are respectively disposed at both ends of the conductive block. The socket plate is provided with a terminal slot corresponding to the terminal assembly, and the conductive block is disposed in the terminal slot. A cover is provided at one end of the terminal slot. The second end penetrates the side wall of the terminal slot, and the third end penetrates the cover.

[0009] Preferably, both sides of the plug housing are provided with protrusions, and both sides of the end cap are provided with strip grooves, and the protrusions engage with the corresponding strip grooves.

[0010] Preferably, a rubber sealing block is provided on one side of the end cap, the rubber sealing block is disposed inside the plug housing, and the wire passes through the end cap and the rubber sealing block.

[0011] The beneficial effects of this utility model are as follows: Both ends of the shielding cover of this utility model are provided with multiple toothed plates in an annular shape at equal intervals. The toothed plates at one end of the shielding cover tightly hook the locking ring, and the toothed plates at the other end of the shielding cover are stably locked by the locking groove. Both ends of the shielding cover are stably fixed, so that the shielding cover is stably installed. This solves the problem that unstable installation of the shielding cover leads to electromagnetic shielding failure, which in turn interferes with the bus communication, sensor signals and vehicle Ethernet of the car, and in severe cases, may even threaten driving safety. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below, but this is not a limitation on the protection scope of this utility model.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This utility model Figure 1 Schematic diagram of the middle plug assembly; Figure 4 This utility model Figure 1 A schematic diagram of the structure of the middle socket assembly; Figure 5 This utility model Figure 3 Enlarged view of point B in the middle; Figure 6 This utility model Figure 3 Schematic diagram of the shielding component; Figure 7 This utility model Figure 6 Schematic diagram of the structure of the shielding cover; Figure 8 This utility model Figure 6 Enlarged view of point C in the middle; Figure 9 This utility model Figure 6 Enlarged view of point D; Figure 10 This utility model Figure 8 Schematic diagram of the locking ring structure; Figure 11 This utility model Figure 3 A schematic diagram of the structure of the middle terminal component 1; Figure 12 This utility model Figure 4 A schematic diagram of the structure of the middle terminal component 2.

[0014] In the diagram: 11. Main body of the wiring harness; 12. Plug assembly; 13. Socket assembly; 14. Protective sleeve; 15. Wire; 16. Heat shrink tubing; 17. Plug shell; 18. End cap; 19. Rubber sealing block; 20. Mounting plate; 21. Terminal assembly one; 22. Mounting groove; 23. Mounting ring; 24. Shielding assembly; 25. Socket plate; 26. Socket cover; 27. Terminal assembly two; 28. Terminal groove; 29. ​​Cover; 30. Protrusion; 31. Strip groove; 32. Inner cylinder; 33. Shielding cover; 34. Toothed plate; 35. Locking ring; 36. Locking groove; 37. Outer groove; 38. Inner groove; 39. End one; 40. Conductive cylinder; 41. Auxiliary ring; 42. Wing; 43. Conductive block; 44. End two; 45. End three. Detailed Implementation

[0015] See Figures 1 to 12The diagram shows a high-voltage wiring harness for a power battery, comprising a harness body 11. Both ends of the harness body 11 are provided with plug assemblies 12, and each plug assembly 12 is detachably provided with a socket assembly 13. The plug assembly 12 and the socket assembly 13 are connected by a snap-fit ​​structure. The plug assembly 12 includes a plug housing 17 and an end cap 18. The end cap 18 is inserted into one side of the plug housing 17. The plug housing 17 contains a mounting plate 20 and a terminal assembly 21. The mounting plate 20 is fixedly connected to the inner wall of the plug housing 17. Two mounting rings 23 are fixedly provided on one side of the mounting plate 20. Each mounting ring 23 has a shielding assembly 24 on one side. The shielding assembly 24 includes an inner cylinder 32 and a shielding cover 33. One end of the inner cylinder 32 is threaded, and the inner wall of the mounting ring 23 is threaded accordingly. The threaded end of the inner cylinder 32 is threadedly connected to the mounting ring 23. The shielding cover 33 is disposed on the outside of the inner cylinder 32. A locking ring 35 is fixedly disposed on one end of the inner cylinder 32. Multiple outer grooves 37 are provided on the outer wall of the locking ring 35, and multiple inner grooves 38 are provided on the inner wall of the locking ring 35. Multiple locking grooves 36 are provided on the side wall of the other end of the inner cylinder 32. Multiple toothed pieces 34 are arranged in a ring at equal intervals at both ends of the shielding cover 33. The toothed pieces 34 at one end of the shielding cover 33 pass through the inner grooves 38. After being bent, the toothed pieces 34 passing through the inner grooves 38 are engaged in the corresponding outer grooves 37. The toothed pieces 34 at the other end of the shielding cover 33 are bent toward the inside of the locking grooves 36.

[0016] Furthermore, the main body 11 of the wire harness includes a protective sleeve 14 and wires 15. The protective sleeve 14 is disposed between the two plug assemblies 12. There are two wires 15, and both wires 15 pass through the protective sleeve 14. Both ends of the protective sleeve 14 are provided with heat shrink tubing 16. The heat shrink tubing 16 wraps the two ends of the protective sleeve 14 and the wires 15 together under the action of heat shrinking.

[0017] Furthermore, the terminal assembly 21 comprises two components, each including a terminal 39. One end of the terminal 39 has a socket for conductive communication. The mounting plate 20 has a through hole corresponding to the terminal 39. The terminal 39 passes through the through hole on the mounting plate 20. One end of the terminal 39 is connected to a conductive cylinder 40. One end of the wire 15 is inserted into the conductive cylinder 40. An auxiliary ring 41 is provided on the outer side of the connection between the wire 15 and the conductive cylinder 40. After the wire 15 is inserted into the conductive cylinder 40, the interior of the conductive cylinder 40 is pressed inward, thereby stably connecting the wire 15 and the conductive cylinder 40. The auxiliary ring 41 is fitted onto the connection between the conductive cylinder 40 and the wire 15. The portion of the auxiliary ring 41 near the wire 15 is pressed inward, thereby securing the auxiliary ring 41 onto the wire 15 and stably covering the connection between the wire 15 and the conductive cylinder 40.

[0018] Furthermore, the mounting plate 20 has a mounting groove 22 on the side wall of the through hole corresponding to the end 39, and the end 39 has a wing 42. The wing 42 is inclined and one end of the wing 42 is fixed to the side wall of the end 39. The wing 42 is engaged with the mounting groove 22, thereby making the terminal assembly 21 stably installed in the plug housing 17.

[0019] Furthermore, the socket assembly 13 includes a socket plate 25 and a socket cover 26. The socket cover 26 is fixed to the socket plate 25. The socket plate 25 is provided with two terminal assemblies 27. Each terminal assembly 27 includes a conductive block 43, a second end 44, and a third end 45. The third end 45 and the second end 44 are respectively disposed at both ends of the conductive block 43. The conductive block 43, the second end 44, and the third end 45 are an integrated structure. The socket plate 25 is provided with a terminal slot 28 corresponding to the terminal assembly 27. The conductive block 43 is disposed in the terminal slot 28. A cover 29 is provided on one side of the terminal slot 28. The inner wall of the port on one side of the terminal slot 28 is provided with threads, and the cover 29 is provided with corresponding threads. The cover 29 is threadedly connected to the port on one side of the terminal slot 28. The second end 44 penetrates the side wall of the terminal slot 28, and the third end 45 penetrates the cover 29. The enlarged conductive block 43 is stuck in the terminal slot 28 by the cover 29. The second end 44 and the third end 45 at both ends of the conductive block 43 extend to both sides respectively. The second end 44 can be inserted into the socket on the first end 39, so that the plug assembly 12 and the socket assembly 13 are electrically connected. The third end 45 is electrically connected to the power battery or high-voltage load equipment corresponding to the high-voltage wiring harness.

[0020] Furthermore, both sides of the plug housing 17 are provided with protrusions 30, and both sides of the end cap 18 are provided with strip grooves 31, and the protrusions 30 engage with the corresponding strip grooves 31.

[0021] Furthermore, a rubber sealing block 19 is provided on one side of the end cap 18. The rubber sealing block 19 is disposed inside the plug housing 17. A groove corresponding to the rubber sealing block 19 is provided on the inner wall of the plug housing 17, so that the rubber sealing block 19 is stably installed between the end of the plug housing 17 and the end cap 18, thereby providing a stable sealing effect. The wire 15 passes through the end cap 18 and the rubber sealing block 19.

[0022] The working principle of this utility model is as follows: the wire 15 is stably connected to the terminal assembly 21 through the conductive cylinder 40 and the auxiliary ring 41. The terminal assembly 21 is stably installed on the mounting plate 20 through the snap-fit ​​between the mounting groove 22 and the wing 42, thereby making the plug assembly 12 stably installed at the end of the wire harness body 11. The end 45 of one socket assembly 13 is electrically connected to the power battery, and the end 45 of the other socket assembly 13 is electrically connected to the high-voltage load equipment. The plug assemblies 12 at both ends of the wire harness body 11 are connected to the two socket assemblies 13 respectively. The socket cover 26 is inserted into the plug housing 17, and the end 44 is inserted into the socket on the end 39 to form a conductive connection, so that the power battery and the high-voltage load equipment can achieve conductive connection through the high-voltage wire harness.

[0023] The shielding cover 33 forms electromagnetic shielding on the outside of end 39. High-frequency interference signals passing through the shielding cover 33 are filtered and shielded by the inductive filtering effect of the shielding cover 33. Both ends of the shielding cover 33 are provided with multiple toothed plates 34 arranged in a ring at equal intervals. The toothed plates 34 at one end of the shielding cover 33 pass through the inner groove 38. After bending, the toothed plates 34 passing through the inner groove 38 are engaged in the corresponding outer groove 37. This makes the toothed plates 34 at one end of the shielding cover 33 tightly hook the locking ring 35, while the toothed plates 34 at the other end of the shielding cover 33 bend towards the inside of the locking groove 36, so that the toothed plates 34 at the other end of the shielding cover 33 are stably locked by the locking groove 36. Both ends of the shielding cover 33 are stably fixed, so that the shielding cover 33 is stably installed. This solves the problem that unstable installation of the shielding cover 33 will cause electromagnetic shielding failure, thereby interfering with the vehicle's bus communication, sensor signals and vehicle Ethernet, and in severe cases, threatening driving safety.

[0024] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A high-voltage wiring harness for a power battery, characterized in that: The device includes a wire harness body, with plug assemblies at both ends. Each plug assembly has a detachable socket assembly. Each plug assembly includes a plug housing and an end cap. The end cap is inserted into one side of the plug housing. The plug housing contains a mounting plate and a terminal assembly. The mounting plate is fixedly connected to the inner wall of the plug housing. Two mounting rings are fixedly mounted on one side of the mounting plate. Each mounting ring has a shielding assembly on one side. The shielding assembly includes an inner cylinder and a shielding cover. One end of the inner cylinder is threadedly connected to the mounting ring. The shielding cover is located on the outside of the inner cylinder. A locking ring is fixedly mounted on one end of the inner cylinder. The outer wall of the locking ring has multiple outer grooves, and the inner wall of the locking ring has multiple inner grooves. The side wall of the other end of the inner cylinder has multiple locking slots. Both ends of the shielding cover have multiple teeth arranged in annular intervals. The teeth at one end of the shielding cover pass through the inner grooves and are bent and engaged in the corresponding outer grooves. The teeth at the other end of the shielding cover are bent toward the inside of the locking slots.

2. The high-voltage wiring harness for a power battery according to claim 1, characterized in that: The main body of the wiring harness includes a protective sleeve and wires. The protective sleeve is disposed between two plug assemblies. There are two wires, both of which pass through the protective sleeve. Heat shrink tubing is provided at both ends of the protective sleeve.

3. The high-voltage wiring harness for a power battery according to claim 2, characterized in that: The terminal assembly consists of two parts, each including a terminal head. The mounting plate has a through hole corresponding to the terminal head, and the terminal head passes through the through hole on the mounting plate. One end of the terminal head is connected to a conductive cylinder, and one end of the wire is inserted into the conductive cylinder. An auxiliary ring is provided on the outside of the connection between the wire and the conductive cylinder.

4. The high-voltage wiring harness for a power battery according to claim 3, characterized in that: The mounting plate has a mounting groove on the side wall of the through hole corresponding to end one, and end one has a wing piece, which is engaged with the mounting groove.

5. A high-voltage wiring harness for a power battery according to claim 1, characterized in that: The socket assembly includes a socket plate and a socket cover. The socket cover is fixed to the socket plate. The socket plate is provided with two terminal assemblies, each terminal assembly including a conductive block, a second end, and a third end. The third end and the second end are respectively disposed at both ends of the conductive block. The socket plate is provided with a terminal slot corresponding to the terminal assembly, and the conductive block is disposed in the terminal slot. A cover is provided at one end of the terminal slot. The second end penetrates the side wall of the terminal slot, and the third end penetrates the cover.

6. A high-voltage wiring harness for a power battery according to claim 1, characterized in that: Both sides of the plug housing are provided with protrusions, and both sides of the end cap are provided with strip grooves, and the protrusions engage with the corresponding strip grooves.

7. A high-voltage wiring harness for a power battery according to claim 2, characterized in that: A rubber sealing block is provided on one side of the end cap, and the rubber sealing block is located inside the plug housing. The wire passes through the end cap and the rubber sealing block.

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