CN115954701B

CN115954701B - High-voltage wire harness assembly for electric automobile

Info

Publication number: CN115954701B
Application number: CN202310225540.9A
Authority: CN
Inventors: 马源清
Original assignee: GUANGZHOU SINCER Ltd
Current assignee: GUANGZHOU SINCER Ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-05-05
Anticipated expiration: 2043-03-10
Also published as: CN115954701A

Abstract

The invention discloses a high-voltage wire harness assembly for an electric automobile, which comprises a female head mechanism and a male head mechanism which is in plug-in fit with the female head mechanism; the female head mechanism comprises a connecting piece A, a copper sleeve A, a first circular ring A, a first copper sleeve B, a first circular ring B, a first steel wire rope, a first spring A, a first circular ring B and a cooling pipe A; the male head mechanism comprises a connecting piece B, a second circular ring A, a second copper bush B, a second circular ring B, a second steel wire rope, a second spring A, a second circular bush B, a copper bush C, a cooling pipe B, a sliding bush C, a spring D and an internal thread bush C; compared with the liquid cooling circulation formed by two cooling pipes in the existing male head or female head, the single cooling pipe A in the male head mechanism and the single cooling pipe B in the female head mechanism are in butt joint to form the liquid cooling circulation, so that the volume of the male head mechanism or the female head mechanism is effectively reduced, the miniaturization design of the high-voltage wire harness connector of the electric automobile is facilitated, the production cost is saved, and the complexity of the inside of the high-voltage wire harness connector is reduced.

Description

High-voltage wire harness assembly for electric automobile

Technical Field

The invention belongs to the field of electric automobiles, and particularly relates to a high-voltage wire harness assembly for an electric automobile.

Background

An electric vehicle (BEV) is a vehicle that uses a vehicle-mounted power supply as power and uses a motor to drive wheels to run, and meets various requirements of road traffic and safety regulations. The environmental impact is smaller than that of the traditional automobile, and the prospect is widely seen.

The motor controller, the distribution box and the vehicle-mounted charger of the electric automobile are connected through the high-voltage wire harness, and along with the improvement of mileage and power of the electric automobile, the overload heating of the high-voltage wire harness at the connecting end is correspondingly improved. At present, the high-voltage wire harness connecting end is generally cooled by air cooling or liquid cooling, and the high-voltage wire harness connecting end in the electric automobile is increasingly in a liquid cooling mode due to higher cooling efficiency of liquid cooling.

In the existing liquid cooling mode of the high-voltage wire harness, the male head and the female head are respectively provided with a liquid cooling circulation structure, namely, no matter the male head or the female head is provided with two cooling pipes for liquid cooling circulation, so that the volume of the male head or the female head is increased, and the purpose of miniaturization of the connector cannot be achieved.

The existing electric automobile often loosens between the joints of the high-voltage wire harness, and in order to prevent the joints from loosening, besides improving the joint structure, weak current identification elements are additionally arranged at the joints to identify whether the joints are in good contact, and the structure leads to the increase of the volume of the joints of the high-voltage wire harness and the production cost of the high-voltage wire harness.

The pressure contact area of the male head or the female head in the high-voltage wire harness of the existing electric automobile to the corresponding cable is small, so that the heat generated by the increase of the resistance is increased.

The invention designs a high-voltage wire harness assembly for an electric automobile, which solves the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a high-voltage wire harness assembly for an electric automobile, which is realized by adopting the following technical scheme.

The high-voltage wire harness assembly for the electric automobile comprises a female head mechanism and a male head mechanism, wherein the female head mechanism is in plug-in fit with the male head mechanism.

The female head mechanism comprises a connecting piece A, a copper sleeve A, a first circular ring A, a first copper sleeve B, a first circular ring B, a first steel wire rope, a first spring A, a first circular ring sleeve B and a cooling pipe A, wherein two ends of the cylindrical insulating material connecting piece A are respectively provided with a slot A and a slot B matched with a cable, the first circular ring A axially slides in the slot B, the first circular ring sleeve B is nested and rotated outside the connecting piece A, the first circular ring B driven by the first circular ring sleeve B is rotationally matched in the slot B, the first copper sleeve B on the end face of the first circular ring A is axially and slidably matched with the copper sleeve A on the inner wall of the slot A, and the first circular ring B is connected with the first circular ring A through the first steel wire rope uniformly distributed in the circumferential direction and is provided with the first spring A for axially resetting the first circular ring A; the middle part of the end wall of the slot A is provided with a cooling pipe A communicated with the liquid pump; the connecting piece A is provided with a structure for fastening and preventing loosening of the cable inserted into the slot B.

The male head mechanism comprises a connecting piece B, a second circular ring A, a second copper sleeve B, a second circular ring B, a second steel wire rope, a second spring A, a second circular ring sleeve B, a copper sleeve C, a cooling pipe B, a sliding sleeve C, a spring D and an internal thread sleeve C, wherein annular plugs matched with slots A on the connecting piece A and slots C matched with cables are respectively arranged at two ends of the cylindrical insulating material connecting piece B, the second circular ring A axially slides in the slots C, the slots C are rotationally matched with the second circular ring B driven by the second circular ring sleeve B which is nested and rotated outside the connecting piece B, the second copper sleeve B on the end face of the second circular ring A is axially matched with the copper sleeve C which is nested and installed on the plugs in a sliding manner, and the second circular ring B is connected with the second circular ring A through second steel wires uniformly distributed in a circumferential direction and is provided with the second spring A which axially resets the second circular ring A; the plug is internally provided with a cooling pipe B which is communicated with the liquid pump and is in plug-in fit with the cooling pipe A; the connecting piece B is nested and slides with a sliding sleeve C and is provided with a spring D for resetting the sliding sleeve C; an internal thread sleeve C in threaded fit with the connecting piece A is nested on the sliding sleeve C; the connecting piece B is provided with a structure for fastening and preventing loosening of the cable inserted into the slot C.

The cooling pipe B and the cooling pipe A are in transmission fit with the sliding sleeve C, and a structure of opening a cooling liquid circulation channel when the plug is well inserted into the slot A and closing the cooling liquid circulation channel when the plug is loose from the slot A along the axial direction is arranged; the cooling pipe B has a structure for sealing the joint between the cooling pipe B and the cooling pipe A.

As a further improvement of the technology, a valve plug for a ring plate switch in the cooling pipe A is axially arranged in the cooling pipe A along the connecting piece A, and a spring B for resetting the valve plug is also arranged in the cooling pipe A.

An ejector rod matched with a valve plug in the cooling pipe A is axially arranged in the cooling pipe B along the connecting piece B; a sliding sleeve A is nested and slides on the ejector rod, and a spring C for resetting the sliding sleeve A is also arranged on the ejector rod; the sliding sleeve A is fixedly connected with a ring sleeve C which axially slides in the cooling pipe B through four fixing rods B, and a ring groove at the outer side of the ring sleeve C is matched with the cooling pipe A through a sealing gasket; the ejector rod is fixedly connected with a sliding sleeve B outside the cooling pipe B through a synchronous rod A, the sliding sleeve B is arranged in the sliding groove B in a sliding manner, and the sliding sleeve B seals a sliding groove C on the wall surface of the cooling pipe B; four synchronizing rods B uniformly distributed in the circumferential direction of the sliding sleeve B are fixedly connected with the sliding sleeve C, and the sliding sleeve C seals the connecting piece B and the sliding groove A on the wall surface of the copper sleeve C.

As a further improvement of the technology, a plurality of first clamping plates matched with the cable are uniformly distributed at the circumference of the slot B end of the connecting piece A; the connecting piece A is screwed with a first internal thread sleeve A and a first internal thread sleeve B with opposite screw threads, and the inner wall of the first internal thread sleeve B is provided with a first conical surface matched with the first clamping plate; the first clamping groove of the outer wall of the first internal thread sleeve A is matched with the second clamping groove of the outer wall of the first internal thread sleeve B, and the first clamping plate is fixed in the first clamping groove of the outer wall of the first internal thread sleeve A and the second clamping groove of the outer wall of the first internal thread sleeve B through a first bolt.

As a further improvement of the technology, a plurality of second clamping plates matched with the cable are uniformly distributed at the periphery of the C end of the slot of the connecting piece B; the connecting piece B is screwed with a second internal thread sleeve A and a second internal thread sleeve B with opposite screw threads, and the inner wall of the second internal thread sleeve B is provided with a second conical surface matched with the second clamping plate; the third clamping groove of the outer wall of the second internal thread sleeve A is matched with the fourth clamping groove of the outer wall of the second internal thread sleeve B, and the second clamping plate is fixed in the third clamping groove of the outer wall of the second internal thread sleeve A and the fourth clamping groove of the outer wall of the second internal thread sleeve B through a second bolt.

As a further improvement of the technology, two first rotary sealing elements are matched between the first annular sleeve B and the connecting piece A;

two second rotary sealing elements are matched between the second ring sleeve B and the connecting piece B.

As a further improvement of the technology, the first ring B is fixedly connected with the first ring sleeve A through two first connecting blocks, and the two first connecting blocks swing in two swing grooves A of the connecting piece A respectively; the second ring B is fixedly connected with the second ring sleeve A through two second connecting blocks, and the two second connecting blocks swing in two swing grooves B of the connecting piece B respectively;

the first ring sleeve A is nested outside the connecting piece A and seals the swing groove A of the connecting piece A; the second ring sleeve A is nested outside the connecting piece B and seals the swinging groove B of the connecting piece B;

the first vortex ring on the first ring sleeve A is meshed with a first worm, and the first worm is arranged on the connecting piece A through a first rotating seat; the second vortex ring on the second ring sleeve A is meshed with a second worm, and the second worm is arranged on the connecting piece B through a second swivel mount;

the first gear A installed on the first worm is meshed with the first gear B installed on the connecting piece A, the second gear A installed on the second worm is meshed with the second gear B installed on the connecting piece B, the first gear C is installed on the shaft neck of the first gear B, the second gear C is installed on the shaft neck of the second gear B, the first gear ring is installed on the inner wall of the first ring sleeve B, the first gear C is meshed with the first gear ring, the second gear ring is installed on the inner wall of the second ring sleeve B, and the second gear C is meshed with the second gear ring.

As a further improvement of the technology, two sealing rings which are in sealing fit with the cooling pipe B are nested outside the cooling pipe A.

Compared with the traditional high-voltage wire harness connection mode of the electric automobile, the high-efficiency liquid cooling of the high-voltage wire harness connection position is achieved through the mutual matching of the cooling pipe B in the male head mechanism and the cooling pipe A in the female head mechanism.

Compared with the liquid cooling circulation formed by two cooling pipes in the existing male or female head, the liquid cooling circulation is formed after the single cooling pipe A in the male head mechanism is in butt joint with the single cooling pipe B in the female head mechanism, so that the volume of the male head mechanism or the female head mechanism is effectively reduced, the miniaturization design of the high-voltage wire harness connector of the electric automobile is facilitated, the production cost is saved, and the complexity of the inside of the high-voltage wire harness connector is reduced.

The cooling pipe B in the male head mechanism and the cooling pipe A in the female head mechanism can relatively slide by a certain amplitude when the male head mechanism and the female head mechanism are loosened, so that the cooling pipe A in the female head mechanism is closed to stop circulation of cooling liquid, on one hand, leakage of the cooling liquid due to connection loosening is prevented, and on the other hand, whether the male head mechanism and the female head mechanism are loosened or not is identified by observing whether the cooling liquid stops circulation or not, and whether a control system is powered off or not is timely operated. No additional identifying circuit equipment is needed, thereby achieving the purpose of simplifying the structure and reducing the maintenance cost.

The structure that second ring A among the public first mechanism and second ring B are connected through the second wire rope of circumference evenly distributed or the structure that first ring A among the female first mechanism and first ring B are connected through the first wire rope of circumference evenly distributed can carry out circumference even pressure to the copper core of cable after the copper core of cable inserts connecting piece B or connecting piece A to increase the pressure contact area between connecting piece A or connecting piece B and the cable copper core, reduce the resistance of connecting piece A or connecting piece B and cable copper core contact department, reduce the heating of connecting piece A or connecting piece B and cable copper core contact department.

The invention has simple structure and better use effect.

Drawings

FIG. 1 is a schematic structural view of a female mechanism;

FIG. 2 is a schematic cross-sectional view of the female mechanism;

FIG. 3 is a schematic diagram of the structure of the male mechanism;

FIG. 4 is a schematic cross-sectional view of a male mechanism;

FIG. 5 is a schematic cross-sectional view of the male and female mechanisms engaged;

FIG. 6 is a schematic cross-sectional view of a cooling tube A and a cooling tube B;

FIG. 7 is a schematic cross-sectional view of the female mechanism mated with a cable and a cable copper core;

FIG. 8 is a schematic cross-sectional view of the male mechanism mated with a cable and a cable copper core;

FIG. 9 is a schematic cross-sectional view of a view of the first ring B driving structure;

FIG. 10 is a schematic cross-sectional view of a first ring B drive configuration from another perspective;

FIG. 11 is a schematic cross-sectional view of a second ring B driving structure;

FIG. 12 is a schematic cross-sectional view of a second ring B drive configuration from another perspective;

FIG. 13 is a schematic cross-sectional view of a first female threaded sleeve A and a first female threaded sleeve B;

FIG. 14 is a schematic cross-sectional view of a second female threaded sleeve A and a second female threaded sleeve B;

FIG. 15 is a schematic cross-sectional view of a connector B;

FIG. 16 is a schematic cross-sectional view of the connector A;

FIG. 17 is a schematic diagram of the first ring A, the first wire rope and the first ring B;

FIG. 18 is a schematic diagram of the second ring A, the second wire rope and the second ring B;

FIG. 19 is a schematic cross-sectional view of a first ring C;

FIG. 20 is a schematic cross-sectional view of a second ring C;

reference numerals in the figures: 1. a female head mechanism; 2. a connecting piece A; 3. a slot A; 4. a slot B; 5. a swinging groove A;

6. a first clamping plate; 601. a second clamping plate; 7. a first guide key; 701. a second guide key; 8. copper bush A; 9. a first ring A; 91. a second ring A; 10. a first copper sleeve B; 101. a second copper sleeve B; 11. a first keyway; 111. a second keyway; 12. a first ring B; 121. a second ring B; 13. a first trapezoid ring groove; 131. a second trapezoidal ring groove; 14. a first wire rope; 141. a second wire rope; 15. a first ring C; 151. a second ring C; 16. a first trapezoidal guide ring; 161. a second trapezoidal guide ring; 17. a first spring A; 171. a second spring A; 18. a first connection block; 181. a second connection block; 19. a second loop A; 191. a second loop A; 20. a first scroll ring; 201. a second scroll ring; 21. a first worm; 211. a second worm; 22. a first swivel mount; 221. a second swivel mount; 23. a first gear A; 231. a second gear A; 24. a first gear B; 241. a second gear B; 25. a first gear C; 251. a second gear C; 26. a first ring gear; 261. a second ring gear; 27. a first collar B; 271. a second collar B; 28. a first rotary seal; 281. a second rotary seal; 29. a first internal thread bush A; 291. a second internal thread bush A; 30. a first clamping groove; 301. a second clamping groove; 302. a third clamping groove; 303. a fourth clamping groove; 31. a first female screw sleeve B; 311. a second female screw sleeve B; 32. a first conical surface; 321. a second conical surface; 33. a first clamping plate; 331. a second clamping plate; 34. a first bolt; 341. a second bolt;

35. a cooling pipe A; 36. a seal ring; 37. a ring plate; 38. a cross; 39. a guide rail; 40. a valve plug; 41. a spring B;

42. a male mechanism; 43. a connecting piece B; 44. a plug; 45. a slot C; 46. a swinging groove B; 48. a chute A; 49. copper bush C; 50. a cooling pipe B; 51. a chute B; 52. a push rod; 53. a ring bulge A; 54. a ring bulge B; 55. guide sleeve; 56. a fixed rod A; 57. a sliding sleeve A; 58. a fixed rod B; 59. a loop C; 60. a sealing gasket; 61. a spring C; 62. a synchronizing rod A; 63. a sliding sleeve B; 64. a synchronizing rod B; 65. a sliding sleeve C; 66. a spring D; 67. a ring bulge C; 68. an internal thread sleeve C; 69. a chute C; 70. a cable; 71. a copper core.

Detailed Description

The drawings are schematic representations of the practice of the invention to facilitate understanding of the principles of operation of the structure. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1 to 20, the device comprises a female head mechanism 1 and a male head mechanism 42, wherein the female head mechanism 1 is in plug-in fit with the male head mechanism 42.

As shown in fig. 1, fig. 2, fig. 5 and fig. 6, the female head mechanism 1 comprises a connecting piece A2, a copper bush A8, a first circular ring A9, a first copper bush B10, a first circular ring B12, a first steel wire rope 14, a first spring a17, a first circular ring B27 and a cooling pipe a35, wherein, as shown in fig. 7, fig. 16 and fig. 17, two ends of the cylindrical insulating material connecting piece A2 are respectively provided with a slot A3 and a slot B4 matched with a cable 70, the first circular ring A9 slides axially in the slot B4, the connecting piece A2 is nested and rotated outside the slot A2 to form a first circular ring B27, a first circular ring B12 driven by the first circular ring B27 is rotatably matched in the slot B4, the first copper bush B10 on the end surface of the first circular ring A9 slides axially with the copper bush A8 on the inner wall of the slot A3, and the first circular ring B12 is connected with the first circular ring A9 through the first steel wire rope 14 uniformly distributed circumferentially and is provided with a first spring a17 reset axially to the first circular ring A9; the middle part of the end wall of the slot A3 is provided with a cooling pipe A35 communicated with the liquid pump; the connector A2 has a structure for securing and preventing the cable 70 inserted into the slot B4 from loosening.

As shown in fig. 3, fig. 4, fig. 5 and fig. 6, the male head mechanism 42 includes a connecting piece B43, a second ring a91, a second copper bush B101, a second ring B121, a second steel wire rope 141, a second spring a171, a second ring B271, a copper bush C49, a cooling tube B50, a sliding bush C65, a spring D66 and an internal thread bush C68, wherein, as shown in fig. 8, fig. 15 and fig. 18, both ends of the cylindrical insulating connecting piece B43 are respectively provided with an annular plug 44 matched with a slot A3 on the connecting piece A2 and a slot C45 matched with the cable 70, the slot C45 is axially slid with a second ring a91, the outer part of the connecting piece B43 is nested and rotated with a second ring B271, the second ring B121 driven by the second ring B271 is rotationally matched with the second copper bush B101 on the end face of the second ring a91, which is nested and the copper bush C49 mounted on the plug 44 are axially slid, and the second ring B121 is connected with the second steel wire rope 141 through a uniform circumferential distribution and the second ring a91 is axially mounted on the second ring a reset 91; as shown in fig. 3 to 6, the plug 44 has therein a cooling tube B50 which communicates with the liquid pump and is in plug-fit with the cooling tube a35; the connecting piece B43 is nested and slides with a sliding sleeve C65 and is provided with a spring D66 for resetting the sliding sleeve C65; an internal thread sleeve C68 in threaded fit with the connecting piece A2 is nested on the sliding sleeve C65; the connector B43 has a structure for securing and preventing the cable 70 inserted into the slot C45 from loosening.

As shown in fig. 3 to 6, the cooling tube B50 and the cooling tube a35 have a structure in which they are in driving engagement with the sliding sleeve C65, and the cooling liquid circulation passage is opened when the plug 44 is plugged into the slot A3, and closed when the plug 44 is loosened from the slot A3 in the axial direction; as shown in fig. 5 and 6, the cooling pipe B50 has a structure to seal the junction with the cooling pipe a 35.

As shown in fig. 5 and 6, a valve plug 40 for opening and closing the annular plate 37 in the cooling pipe a35 is installed in the cooling pipe a35 along the axial direction of the connecting member A2, and a spring B41 for resetting the valve plug 40 is also installed in the cooling pipe a 35.

As shown in fig. 5 and 6, a push rod 52 which is matched with the valve plug 40 in the cooling pipe a35 is axially arranged in the cooling pipe B50 along the connecting piece B43; a sliding sleeve A57 is nested and slides on the ejector rod 52, and a spring C61 for resetting the sliding sleeve A57 is also arranged on the ejector rod 52; the sliding sleeve A57 is fixedly connected with a ring sleeve C59 which axially slides in the cooling pipe B50 through four fixing rods B58, and a ring groove on the outer side of the ring sleeve C59 is matched with the cooling pipe A35 through a sealing gasket 60; the ejector rod 52 is fixedly connected with a sliding sleeve B63 outside the cooling pipe B50 through a synchronizing rod A62, the sliding sleeve B63 is arranged in a sliding groove B51 in a sliding manner, and the sliding sleeve B63 seals a sliding groove C69 on the wall surface of the cooling pipe B50; four synchronizing rods B64 uniformly distributed in the circumferential direction of the sliding sleeve B63 are fixedly connected with the sliding sleeve C65, and the sliding sleeve C65 seals the connecting piece B43 and the sliding groove A48 on the wall surface of the copper sleeve C49.

As shown in fig. 7, 13 and 16, a plurality of first clamping plates 6 matched with the cable 70 are uniformly distributed at the circumference of the slot B4 end of the connecting piece A2; the connecting piece A2 is screwed with a first internal thread sleeve A29 and a first internal thread sleeve B31 with opposite screw threads, and the inner wall of the first internal thread sleeve B31 is provided with a first conical surface 32 matched with the first clamping plate 6; the first clamping groove 30 on the outer wall of the first internal thread sleeve A29 is matched with the second clamping groove 301 on the outer wall of the first internal thread sleeve B31, the first clamping plate 33 is fixed in the first clamping groove 30 on the outer wall of the first internal thread sleeve A29 and the second clamping groove 301 on the outer wall of the first internal thread sleeve B31 through a first bolt 34.

As shown in fig. 8, 14 and 15, a plurality of second clamping plates 601 matched with the cable 70 are uniformly distributed at the end of the slot C45 of the connecting piece B43 in the circumferential direction; the connecting piece B43 is screwed with a second internal thread sleeve A291 and a second internal thread sleeve B311 with opposite screw threads, and the inner wall of the second internal thread sleeve B311 is provided with a second conical surface 321 matched with the second clamping plate 601; the same second clamping plate 331 is matched with the third clamping groove 302 on the outer wall of the second internal thread sleeve A291 and the fourth clamping groove 303 on the outer wall of the second internal thread sleeve B311, and the second clamping plate 331 is fixed in the third clamping groove 302 on the outer wall of the second internal thread sleeve A291 and the fourth clamping groove 303 on the outer wall of the second internal thread sleeve B311 through a second bolt 341.

As shown in fig. 7 and 8, two first rotary seals 28 are fitted between the first collar B27 and the connecting member A2;

two second rotary seals 281 are fitted between the second collar B271 and the connector B43.

As shown in fig. 7 to 12, 15 and 16, the first ring B12 is fixedly connected with the first ring sleeve a19 through two first connecting blocks 18, and the two first connecting blocks 18 swing in two swing grooves A5 of the connecting piece A2 respectively; the second ring B121 is fixedly connected with the second ring sleeve a191 through two second connecting blocks 181, and the two second connecting blocks 181 swing in the two swing grooves B46 of the connecting piece B43 respectively;

the first annular sleeve A19 is nested outside the connecting piece A2 and seals the swinging groove A5 of the connecting piece A2, and the second annular sleeve A191 is nested outside the connecting piece B43 and seals the swinging groove B46 of the connecting piece B43;

the first vortex ring 20 on the first ring sleeve A19 is meshed with the first worm 21, the first worm 21 is installed on the connecting piece A2 through the first rotating seat 22, the second vortex ring 201 on the second ring sleeve A191 is meshed with the second worm 211, and the second worm 211 is installed on the connecting piece B43 through the second rotating seat 221;

a first gear A23 arranged on the first worm 21 is meshed with a first gear B24 arranged on the connecting piece A2, a first gear C25 is arranged on the journal of the first gear B24, a first gear ring 26 is arranged on the inner wall of the first annular sleeve B27, and the first gear C25 is meshed with the first gear ring 26; the second gear a231 mounted on the second worm 211 is meshed with the second gear B241 mounted on the connecting member B43, the second gear C251 is mounted on the journal of the second gear B241, the second gear ring 261 is mounted on the inner wall of the second collar B271, and the second gear C251 is meshed with the second gear ring 261.

As shown in fig. 6, two sealing rings 36 which are in sealing fit with the cooling pipe B50 are nested outside the cooling pipe a 35.

As shown in fig. 5 to 8, the first spring a17, the second spring a171, the spring B41, the spring C61, and the spring D66 are compression springs.

As shown in fig. 7 and 8, one end of the first spring a17 is connected with the first ring A9, and the other end is connected with the first ring C15 rotating on the end face of the first ring B12; one end of the second spring a171 is connected to the second ring a91, and the other end is connected to the second ring C151 that rotates on the end surface of the second ring B121. As shown in fig. 7, 8, 15 to 18, the two first guide keys 7 on the inner wall of the slot B4 slide in the two first key slots 11 on the first ring A9, respectively, and the two second guide keys 701 on the inner wall of the slot C45 slide in the two second key slots 111 on the second ring a91, respectively. As shown in fig. 7, 8 and 17 to 20, the first trapezoidal guide ring 16 mounted on the first ring C15 rotates in the first trapezoidal ring groove 13 on the end surface of the first ring B12; the second trapezoidal guide ring 161 mounted on the second ring C151 rotates in the second trapezoidal ring groove 131 on the end surface of the second ring B121.

As shown in fig. 6, the spring B41 has one end connected to the cross 38 in the cooling tube a35 and the other end connected to the valve plug 40. The valve plug 40 slides between two guide rails 39 on the cross 38.

As shown in fig. 6, one end of the spring C61 is connected to the slide sleeve a57, and the other end is connected to the annular protrusion a53 on the ejector rod 52.

As shown in fig. 5, one end of the spring D66 is connected to the sliding sleeve C65, and the other end is connected to the annular protrusion C67 on the connecting member B43.

As shown in fig. 5 and 6, the ejector pins 52 slide in guide sleeves 55 mounted in the cooling tube B50 by four fixing rods a 56. The ejector rod 52 is provided with a ring boss B54 for limiting the sliding amplitude of the sliding sleeve A57.

The working flow of the invention is as follows: in the initial state, the male mechanism 42 is separated from the female mechanism 1, the end face of the internal thread sleeve C68 in the male mechanism 42 is flush with the end face of the connecting piece B43, the ejector rod 52 is contracted in the cooling pipe B50, the second conical surface 321 in the second internal thread sleeve B311 is not interacted with the second clamping plate 601, the second clamping plate 331 is not connected and installed in the fourth clamping groove 303 of the second internal thread sleeve B311 and the third clamping groove 302 on the second internal thread sleeve A291, the second spring A171, the spring C61 and the spring D66 are in a compressed state, the sliding sleeve A57 is propped against the annular convex B54, and all the second steel wire ropes 141 between the second annular ring A91 and the second annular ring B121 are parallel to the center axis of the connecting piece B43.

In the initial state, the end face of the copper bush A8 in the female head mechanism 1 is flush with the end face of the connecting piece A2, the valve plug 40 is in a closed state on the annular plate 37 in the cooling pipe A35, the first conical surface 32 in the first internal thread bush B31 does not interact with the first clamping plate 6, the first clamping plate 33 is not connected and installed in the second clamping groove 301 of the first internal thread bush B31 and the first clamping groove 30 on the first internal thread bush A291, the first spring A17 and the spring B41 are in a compressed state, and all the first steel wire ropes 14 between the first annular ring A9 and the first annular ring B12 are parallel to the center axis of the connecting piece A2.

When the invention needs to be used for connecting high-voltage wires in an electric automobile, the male mechanism 42 and the female mechanism 1 are respectively arranged at the tail end of each pair of high-voltage wires, and the process of arranging the male mechanism 42 on the cable 70 is as follows:

the tail end of the cable 70 is peeled off, a certain length of copper core 71 is exposed, and the cable 70 end of the exposed copper core 71 is inserted into a slot C45 of a connecting piece B43 of the male mechanism 42, so that the exposed copper core 71 of the cable 70 enters a second circular ring A91 and a second circular ring B121, and all second steel wires 141 between the second circular ring A91 and the second circular ring B121 form a package on the copper core 71.

Then, the second female screw sleeve B311 is screwed onto the connector B43, and the second tapered surface 321 of the inner wall of the second female screw sleeve B311 drives all the second clamping plates 601 at the end of the slot C45 of the connector B43 to clamp and fix the cable 70. Then, the second female screw sleeve a291 is rotated so that the third clamping groove 302 on the second female screw sleeve a291 is opposite to the fourth clamping groove 303 on the second female screw sleeve B311, and the second clamping plate 331 is installed in each pair of the third clamping groove 302 and the fourth clamping groove 303 through the second bolt 341, so that the second female screw sleeve a291 and the second female screw sleeve B311 are synchronously and fixedly connected. Because the screw thread directions of the second internal thread sleeve A291 and the second internal thread sleeve B311 are opposite, the second internal thread sleeve A291 can effectively prevent the second internal thread sleeve B311 from loosening on the connecting piece B43, and further ensure that the cable 70 inserted into the slot C45 at one end of the connecting piece B43 is fixed without loosening.

Then, the second ring B271 outside the connecting piece B43 is rotated, the second ring B271 drives the second ring B121 to rotate through the second gear 261, the second gear C251, the second gear B241, the second gear a231, the second worm 211, the second scroll 201, the second ring a191 and the second connecting block 181, the second ring B121 drives all the second steel wires 141 to twist and tightly and circumferentially wrap and press the copper core 71 of the cable 70, the second ring a91 axially approaches the second ring B121 under the second steel wires 141, the second spring a171 is further compressed, and the second worm 211 and the second scroll 201 are matched to lock the state that all the second steel wires 141 tightly and axially press and wrap the copper core 71 due to self-locking property, so that the press contact area between the copper core 71 and the connecting piece B43 is ensured to be large enough, the resistance value is small enough, and heat is generated.

To this end, the male mechanism 42 is mounted on the cable 70.

The process of installing the female head mechanism 1 on the cable 70 is as follows:

the tail end of the cable 70 is peeled off, a certain length of copper core 71 is exposed, and the cable 70 end of the exposed copper core 71 is inserted into the slot B4 of the connecting piece A2 of the female head mechanism 1, so that the exposed copper core 71 of the cable 70 enters the first circular ring A9 and the first circular ring B12, and all the first steel wire ropes 14 between the first circular ring A9 and the first circular ring B12 form a package on the copper core 71.

Then, the first female screw sleeve B31 is screwed onto the connecting piece A2, and the first conical surface 32 of the inner wall of the first female screw sleeve B31 drives all the first clamping plates 6 at the end of the slot B4 of the connecting piece A2 to clamp and fix the cable 70. Then, the first internal thread sleeve a29 is rotated, so that the first clamping groove 30 on the first internal thread sleeve a29 is opposite to the second clamping groove 301 on the first internal thread sleeve B31, and the first clamping plate 33 is installed in each pair of the first clamping groove 30 and the second clamping groove 301 through the first bolt 34, so that the first internal thread sleeve a29 and the first internal thread sleeve B31 are synchronously and fixedly connected. Because the screw thread direction of the first internal thread sleeve A29 is opposite to that of the first internal thread sleeve B31, the first internal thread sleeve A29 can effectively prevent the first internal thread sleeve B31 from loosening on the connecting piece A2, and further ensure that the cable 70 inserted into the slot B4 at one end of the connecting piece A2 is fixed without loosening.

Then, the first ring sleeve B27 outside the connecting piece A2 is rotated, the first ring sleeve B27 drives the first ring B12 to rotate through the first gear ring 26, the first gear C25, the first gear B24, the first gear A23, the first worm 21, the first vortex ring 20, the first ring sleeve A19 and the first connecting block 18, the first ring B12 drives all the first steel wire ropes 14 to twist and tightly and circumferentially wrap and press the copper cores 71 of the cables 70, the first ring A9 axially approaches the first ring B12 under the first steel wire ropes 14, the first springs A17 are further compressed, and the first worm 21 and the first vortex ring 20 are matched to lock the state that all the first steel wire ropes 14 tightly and axially press and wrap the copper cores 71 due to self-locking property, so that the press contact area between the copper cores 71 and the connecting piece A2 is large enough, the resistance value is small enough, and heat is generated. To this end, the female mechanism 1 is mounted on the cable 70.

The docking procedure of the male mechanism 42 and the female mechanism 1 is as follows:

the plug 44 on the male head mechanism 42 is completely inserted into the slot A3 on the female head mechanism 1, so that the copper bush A8 on the inner wall of the slot A3 is electrically connected with the copper bush C49 nested outside the plug 44, the tail end of the connecting piece A2 abuts against the tail end of the connecting piece B43, the cooling pipe B50 is nested and sealed and inserted on the cooling pipe A35, and the ejector rod 52 is a certain distance away from the valve plug 40.

Then, the female sleeve C68 on the male mechanism 42 is screwed onto the connecting member A2, and the female sleeve C68 drives the sliding sleeve C65 to axially slide on the connecting member B43 and further compresses the spring D66. The sliding sleeve C65 drives the ejector rod 52 in the cooling pipe B50 to move towards the valve plug 40 through the synchronous rod B64, the sliding sleeve B63 and the synchronous rod A62, and the ejector rod 52 drives the annular sleeve C59 to axially move towards the cooling pipe A35 through the annular protrusion A53, the spring C61, the sliding sleeve A57 and the fixed rod B58.

When the stem 52 meets the plug 40, the collar C59 meets the cooling tube A35.

When the internal thread sleeve C68 is screwed on the connecting piece A2, the ejector rod 52 pushes the valve plug 40 open so that the cooling pipe A35 is communicated with the cooling pipe B50, the spring B41 is further compressed, the ring sleeve C59 tightly presses the sealing gasket 60 against the tail end of the cooling pipe A35 and effectively seals the plugging position of the cooling pipe A35 and the cooling pipe B50, the cooling liquid is prevented from leaking, and the spring C61 is further compressed. The spring D66 compressed to the limit has pretightening force between the internal thread sleeve C68 and the connecting piece A2, so that the loosening of the internal thread sleeve C68 can be effectively prevented, and further the loosening of the male mechanism 42 and the female mechanism 1 can be prevented.

The communicated cooling pipe A35 and cooling pipe B50 effectively circulate and cool the electric contact part of the copper bush A8 and the copper bush C49 under the operation of a liquid pump.

The single cooling pipe B50 in the male head mechanism 42 and the single cooling pipe A35 in the female head mechanism 1 are matched with each other to carry out liquid cooling on the joint connection part, so that the volume of the joint is effectively reduced.

When the male head mechanism 42 and the female head mechanism 1 are loosened, the internal thread sleeve C68 retracts to a certain extent on the connecting piece B43, the annular sleeve C59 drives the ejector rod 52 to reset to a certain extent in the cooling pipe B50 under the reset action of the spring D66, the valve plug 40 changes the opening of the cooling pipe A35 under the reset action of the spring B41, so that the flow rate of cooling liquid in the cooling pipe A35 and the cooling pipe B50 is reduced, the hydraulic pressure of the cooling liquid is increased, and the hydraulic pressure of the control system is changed to monitor whether the connection between the male head mechanism 42 and the female head mechanism 1 is good or not, so that the male head mechanism 42 and the female head mechanism 1 are fastened.

When the looseness generated between the male head mechanism 42 and the female head mechanism 1 is large, the retraction amplitude of the internal thread sleeve C68 is large, the sliding sleeve C65 drives the ejector rod 52 to be separated from the valve plug 40 under the action of the spring D66, the valve plug 40 completely closes the cooling pipe A35 under the action of the spring B41, leakage of cooling liquid is avoided, meanwhile, the cooling liquid is completely closed to cause pressure rapid increase, the control system can display that the connection between the male head mechanism 42 and the female head mechanism 1 is completely loosened, and the male head mechanism 42 and the female head mechanism 1 need to be reconnected and fastened.

When the male head mechanism 42 and the female head mechanism 1 need to be separated, the internal thread sleeve C68 is rotated to reset, the sliding sleeve C65 drives the ejector rod 52 to reset under the action of the spring D66, the valve plug 40 resets under the action of the spring B41, and the ejector rod 52 drives the annular sleeve C59 to reset through the annular protrusion A53 and the sliding sleeve A57.

After the female screw sleeve C68 is screwed off the connecting piece A2, the male mechanism 42 is axially separated from the female mechanism 1.

In summary, the beneficial effects of the invention are as follows: the invention achieves high-efficiency liquid cooling at the junction of the high-voltage wire harness through the mutual matching of the cooling pipe B50 in the male head mechanism 42 and the cooling pipe A35 in the female head mechanism 1.

Compared with the liquid cooling circulation formed by two cooling pipes in the existing male or female, the single cooling pipe A35 in the male mechanism 42 is in butt joint with the single cooling pipe B50 in the female mechanism 1 to form the liquid cooling circulation, so that the volume of the male mechanism 42 or the female mechanism 1 is effectively reduced, the miniaturization design of the high-voltage wire harness connector of the electric automobile is facilitated, the production cost is saved, and the complexity of the inside of the high-voltage wire harness connector is reduced.

The cooling pipe B50 in the male mechanism 42 and the cooling pipe A35 in the female mechanism 1 can slide relatively to a certain extent when the male mechanism 42 and the female mechanism 1 are loosened, so that the cooling pipe A35 in the female mechanism 1 is closed to stop circulation of cooling liquid, on one hand, leakage of the cooling liquid due to connection loosening is prevented, and on the other hand, whether the male mechanism 42 and the female mechanism 1 are loosened or not is identified by observing whether the cooling liquid stops circulation or not, and whether a control system is powered off or not is timely operated. No additional identifying circuit equipment is needed, thereby achieving the purpose of simplifying the structure and reducing the maintenance cost.

The structure that the second ring a91 and the second ring B121 in the male mechanism 42 are connected through the second steel wire ropes 141 which are uniformly distributed circumferentially or the structure that the first ring A9 and the first ring B12 in the female mechanism 1 are connected through the first steel wire ropes 14 which are uniformly distributed circumferentially can perform uniform circumferential pressure contact on the copper core 71 of the cable 70 after the copper core 71 of the cable 70 is inserted into the connecting piece B43 or the connecting piece A2, thereby increasing the pressure contact area between the connecting piece A2 or the connecting piece B43 and the copper core 71 of the cable 70, reducing the resistance at the contact position of the connecting piece A2 or the connecting piece B43 and the copper core 71 of the cable 70, and reducing the heating at the contact position of the connecting piece A2 or the connecting piece B43 and the copper core 71 of the cable 70.

Claims

1. The utility model provides a high-voltage harness assembly for electric automobile which characterized in that: the device comprises a female head mechanism and a male head mechanism, wherein the female head mechanism is in plug-in fit with the male head mechanism;

the female head mechanism comprises a connecting piece A, a copper sleeve A, a first circular ring A, a first copper sleeve B, a first circular ring B, a first steel wire rope, a first spring A, a first circular ring sleeve B and a cooling pipe A, wherein two ends of the cylindrical insulating material connecting piece A are respectively provided with a slot A and a slot B matched with a cable, the first circular ring A axially slides in the slot B, the first circular ring sleeve B is nested and rotated outside the connecting piece A, the first circular ring B driven by the first circular ring sleeve B is rotationally matched in the slot B, the first copper sleeve B on the end face of the first circular ring A is axially and slidably matched with the copper sleeve A on the inner wall of the slot A, and the first circular ring B is connected with the first circular ring A through the first steel wire rope uniformly distributed in the circumferential direction and is provided with the first spring A for axially resetting the first circular ring A; the middle part of the end wall of the slot A is provided with a cooling pipe A communicated with the liquid pump; the connecting piece A is provided with a structure for fastening and preventing loosening of the cable inserted into the slot B;

the male head mechanism comprises a connecting piece B, a second circular ring A, a second copper sleeve B, a second circular ring B, a second steel wire rope, a second spring A, a second circular ring sleeve B, a copper sleeve C, a cooling pipe B, a sliding sleeve C, a spring D and an internal thread sleeve C, wherein annular plugs matched with slots A on the connecting piece A and slots C matched with cables are respectively arranged at two ends of the cylindrical insulating material connecting piece B, the second circular ring A axially slides in the slots C, the slots C are rotationally matched with the second circular ring B driven by the second circular ring sleeve B which is nested and rotated outside the connecting piece B, the second copper sleeve B on the end face of the second circular ring A is axially matched with the copper sleeve C which is nested and installed on the plugs in a sliding manner, and the second circular ring B is connected with the second circular ring A through second steel wires uniformly distributed in a circumferential direction and is provided with the second spring A which axially resets the second circular ring A; the plug is internally provided with a cooling pipe B which is communicated with the liquid pump and is in plug-in fit with the cooling pipe A; the connecting piece B is nested and slides with a sliding sleeve C and is provided with a spring D for resetting the sliding sleeve C; an internal thread sleeve C in threaded fit with the connecting piece A is nested on the sliding sleeve C; the connecting piece B is provided with a structure for fastening and preventing loosening of the cable inserted into the slot C;

2. The high voltage harness assembly for an electric vehicle of claim 1, wherein: the valve plug of the annular plate switch in the cooling pipe A is axially arranged in the cooling pipe A along the connecting piece A, and the spring B for resetting the valve plug is also arranged in the cooling pipe A;

an ejector rod matched with the valve plug in the cooling pipe A is axially arranged in the cooling pipe B along the connecting piece B; a sliding sleeve A is nested and slides on the ejector rod, and a spring C for resetting the sliding sleeve A is also arranged on the ejector rod; the sliding sleeve A is fixedly connected with a ring sleeve C which axially slides in the cooling pipe B through four fixing rods B, and a ring groove at the outer side of the ring sleeve C is matched with the cooling pipe A through a sealing gasket; the ejector rod is fixedly connected with a sliding sleeve B outside the cooling pipe B through a synchronous rod A, the sliding sleeve B is arranged in the sliding groove B in a sliding manner, and the sliding sleeve B seals a sliding groove C on the wall surface of the cooling pipe B; four synchronizing rods B uniformly distributed in the circumferential direction of the sliding sleeve B are fixedly connected with the sliding sleeve C, and the sliding sleeve C seals the connecting piece B and the sliding groove A on the wall surface of the copper sleeve C.

3. The high voltage harness assembly for an electric vehicle of claim 1, wherein: a plurality of first clamping plates matched with the cable are uniformly distributed at the circumference of the slot B end of the connecting piece A; the connecting piece A is screwed with a first internal thread sleeve A and a first internal thread sleeve B with opposite screw threads, and the inner wall of the first internal thread sleeve B is provided with a first conical surface matched with the first clamping plate; the first clamping groove of the outer wall of the first internal thread sleeve A is matched with the second clamping groove of the outer wall of the first internal thread sleeve B, and the first clamping plate is fixed in the first clamping groove of the outer wall of the first internal thread sleeve A and the second clamping groove of the outer wall of the first internal thread sleeve B through a first bolt.

4. The high voltage harness assembly for an electric vehicle of claim 1, wherein: a plurality of second clamping plates matched with the cables are uniformly distributed at the periphery of the end C of the slot of the connecting piece B; the connecting piece B is screwed with a second internal thread sleeve A and a second internal thread sleeve B with opposite screw threads, and the inner wall of the second internal thread sleeve B is provided with a second conical surface matched with the second clamping plate; the third clamping groove of the outer wall of the second internal thread sleeve A is matched with the fourth clamping groove of the outer wall of the second internal thread sleeve B, and the second clamping plate is fixed in the third clamping groove of the outer wall of the second internal thread sleeve A and the fourth clamping groove of the outer wall of the second internal thread sleeve B through a second bolt.

5. The high voltage harness assembly for an electric vehicle of claim 1, wherein: two first rotary sealing elements are matched between the first ring sleeve B and the connecting piece A;

6. The high voltage harness assembly for an electric vehicle of claim 1, wherein: the first ring B is fixedly connected with the first ring sleeve A through two first connecting blocks, and the two first connecting blocks swing in two swing grooves A of the connecting piece A respectively; the second ring B is fixedly connected with the second ring sleeve A through two second connecting blocks, and the two second connecting blocks swing in two swing grooves B of the connecting piece B respectively;

7. The high voltage harness assembly for an electric vehicle of claim 1, wherein: and two sealing rings which are in sealing fit with the cooling pipe B are nested outside the cooling pipe A.