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CN-122026162-A - High-voltage wire harness connecting device for new energy automobile

CN122026162ACN 122026162 ACN122026162 ACN 122026162ACN-122026162-A

Abstract

The invention discloses a high-voltage wire harness connecting device for a new energy automobile, which relates to the technical field of high-voltage connection of new energy automobiles and comprises a limiting sleeve which is rectangular and fixedly connected to an automobile body, four sliding damping mechanisms which are respectively arranged on four inner side walls of the limiting sleeve, a sleeve which is connected with the four sliding damping mechanisms through four telescopic rods, the sleeve is in sealing connection with the end part of the limiting sleeve through an elastic sealing gasket, a female head connecting mechanism which is axially and slidably arranged in the sleeve, an axial elastic damping piece is arranged between the female head connecting mechanism and the sleeve, and a male head connecting mechanism which can be in plug-in fit with the female head connecting mechanism.

Inventors

  • WANG HUI
  • ZHU XIAOGANG
  • WANG LIFU
  • WANG YONGZHAO
  • LI CONG

Assignees

  • 常州中电新能电器科技有限公司

Dates

Publication Date
20260512
Application Date
20260407

Claims (10)

  1. 1. The utility model provides a high-voltage harness connecting device for new energy automobile which characterized in that includes: the limiting sleeve (1) is rectangular and is fixedly connected to the vehicle body; the four sliding damping mechanisms (2) are respectively arranged on the four inner side walls of the limiting sleeve (1); the sleeve (3) is connected with the four sliding damping mechanisms (2) through four telescopic rods (6), and the sleeve (3) is in sealing connection with the end part of the limiting sleeve (1) through an elastic sealing gasket (32); the female connecting mechanism (4) is arranged in the sleeve (3) in an axial sliding manner, and an axial elastic damping piece is arranged between the female connecting mechanism (4) and the sleeve (3); the male head connecting mechanism (5) can be in plug-in fit with the female head connecting mechanism (4); The sliding damping mechanism (2) comprises a sliding cylinder (21) fixedly embedded in the inner wall of the limiting sleeve (1), a sliding cavity (22) is formed in the sliding cylinder (21), a partition plate (23) is arranged in the sliding cavity (22) in a sealing sliding mode, two supporting rods (24) are symmetrically and fixedly arranged at two ends of the partition plate (23), the two supporting rods (24) penetrate through two ends of the sliding cylinder (21) respectively and are in sealing sliding connection with the sliding cylinder (21), a push plate (25) is fixedly arranged at the end portion of the supporting rods (24), a first spring (26) is arranged between the push plate (25) and the limiting sleeve (1), a mounting plate (27) is fixedly arranged between the two supporting rods (24), and two ends of the telescopic rod (6) are fixedly connected to the mounting plate (27) and the sleeve (3) respectively.
  2. 2. The high-voltage wire harness connecting device for the new energy automobile according to claim 1, wherein the partition board (23) divides the interior of the sliding cavity (22) into two cavities, and a plurality of damping holes (231) for communicating the two cavities are formed in the partition board (23); damping liquid is filled in the sliding cavity (22), and the damping liquid is silicone oil or magnetorheological fluid.
  3. 3. The high-voltage wire harness connecting device for the new energy automobile according to claim 2, wherein when the damping liquid is magnetorheological liquid, an exciting coil is arranged outside the sliding cylinder (21), and the exciting coil is electrically connected with the vehicle-mounted controller and is used for adjusting damping force according to the vibration state of the automobile.
  4. 4. The high-voltage wire harness connecting device for the new energy automobile according to claim 1, wherein a sealing ring is arranged on the periphery of the partition plate (23), and a wear-resistant coating is arranged on the inner wall of the sliding cavity (22).
  5. 5. The high-voltage wire harness connecting device for the new energy automobile according to claim 1, wherein a flexible conductive belt is connected between the sleeve (3) and the limit sleeve (1) to form a first grounding path; elastic conductive contact fingers are arranged between the female connector (4) and the sleeve (3) to form a second grounding path.
  6. 6. The high-voltage harness connecting device for the new energy automobile according to claim 1, wherein the female connecting mechanism (4) comprises a first insulating housing (41) and a high-voltage terminal assembly (42) arranged inside the first insulating housing (41), a micro heat pipe is embedded inside the high-voltage terminal assembly (42), an evaporation end of the micro heat pipe is close to an insertion hole part of the high-voltage terminal assembly (42), and a condensation end of the micro heat pipe extends to the outside of the first insulating housing (41) and is connected with radiating fins (411).
  7. 7. The high-voltage wire harness connecting device for the new energy automobile according to claim 6, wherein a plug-in ring (412) is arranged at the plug-in end of the first insulating housing (41), a plurality of spiral grooves (413) are formed in the plug-in ring (412) in the circumferential direction, at least two clamping grooves (414) concentric with the plug-in ring (412) are formed in the plug-in end of the first insulating housing (41), a clamping block mechanism (43) is arranged on the first insulating housing (41) in a sliding manner in the radial direction, and part of the clamping block mechanism (43) protrudes out of the outer surface of the first insulating housing (41).
  8. 8. The high-voltage wire harness connecting device for the new energy automobile according to claim 7, wherein the male connecting mechanism (5) comprises a second insulating housing (51) and a plug-in assembly (52) which is arranged on the second insulating housing (51) and is matched with the high-voltage terminal assembly (42), a clamping ring (53) is rotatably arranged on the outer side of the second insulating housing (51), a plurality of threaded strips (531) which are matched with the spiral groove (413) are fixedly arranged on the outer side of the clamping ring (53), and at least two clamping rods (532) which are matched with the clamping groove (414) are fixedly arranged at the end part of the clamping ring (53) along the axial direction.
  9. 9. The high-voltage wire harness connecting device for the new energy automobile according to claim 8, wherein the clamping block mechanism (43) comprises a T-shaped sliding rod (431), a sliding groove for the T-shaped sliding rod (431) to slide is formed in the first insulating shell (41), a second spring (432) is arranged between the bottom of the T-shaped sliding rod (431) and the first insulating shell (41), a clamping block (433) with an inclined surface is fixedly arranged on the T-shaped sliding rod (431), and the clamping rod (532) can be clamped into the clamping groove (414) in a sliding mode and can push the clamping block (433) and the T-shaped sliding rod (431) to slide through the inclined surface.
  10. 10. The high-voltage wire harness connecting device for the new energy automobile according to claim 6, wherein a plurality of sliding rails (31) are axially arranged on the inner wall of the sleeve (3); The outer wall of the first insulating shell (41) is fixedly provided with a plurality of sliding blocks (415) which are matched with the sliding rails (31).

Description

High-voltage wire harness connecting device for new energy automobile Technical Field The invention relates to the technical field of high-voltage connection of new energy automobiles, in particular to a high-voltage wire harness connection device for a new energy automobile. Background The high-voltage wire harness connecting device of the new energy automobile is a key node for energy transmission among core components such as a battery, a motor, an electric control component and the like. As the whole car architecture develops to an 800V high-voltage platform, the connection device needs to bear higher voltage and current, and meanwhile, the requirements on reliability are also more severe. First, the continuous vibration in the running process of the vehicle can lead to the contact interface of the internal terminal of the connector to generate fretting wear, insulating oxide is generated after the silver plating layer on the surface of the terminal is worn off, so that the contact resistance is increased, the temperature rise is increased, and finally the connector can be ablated. Secondly, the locking mechanism of the existing connector is mostly a single direct-insertion type buckle, is easy to loosen under severe vibration environment, lacks a reliable secondary locking and misplug preventing structure, and cannot offset friction loss generated by vehicle vibration, so that the service life of the connector is reduced. Therefore, it is necessary to provide a high-voltage harness connection device for a new energy automobile to solve the above-mentioned problems in the prior art. Disclosure of Invention The high-voltage wire harness connecting device for the new energy automobile comprises a limiting sleeve which is rectangular and fixedly connected to the automobile body; the sliding damping device comprises a limiting sleeve, four sliding damping mechanisms, a sleeve, a female head connecting mechanism, a male head connecting mechanism and a male head connecting mechanism, wherein the four sliding damping mechanisms are respectively arranged on four inner side walls of the limiting sleeve; The sliding damping mechanism comprises a sliding cylinder fixedly embedded in the inner wall of the limiting sleeve, a sliding cavity is formed in the sliding cylinder, a partition plate is arranged in the sliding cavity in a sealing sliding mode, two ends of the partition plate are symmetrically and fixedly provided with supporting rods, the supporting rods penetrate through two ends of the sliding cylinder respectively and are in sealing sliding connection with the sliding cylinder, a push plate is fixedly arranged at the end part of each supporting rod, a first spring is arranged between the push plate and the limiting sleeve, a mounting plate is fixedly arranged between the two supporting rods, and two ends of each telescopic rod are fixedly connected to the mounting plate and the sleeve respectively. Preferably, the baffle divides the interior of the sliding cavity into two cavities, a plurality of damping holes for communicating the two cavities are formed in the baffle, damping liquid is filled in the sliding cavity, and the damping liquid is silicone oil or magnetorheological liquid. Preferably, when the damping fluid is magnetorheological fluid, an exciting coil is arranged outside the slide cylinder, and the exciting coil is electrically connected with the vehicle-mounted controller and used for adjusting the damping force according to the vibration state of the vehicle. Preferably, a sealing ring is arranged on the periphery of the partition board, and a wear-resistant coating is arranged on the inner wall of the sliding cavity. Preferably, a flexible conductive belt is connected between the sleeve and the limiting sleeve to form a first grounding path, and an elastic conductive contact finger is arranged between the female connector and the sleeve to form a second grounding path. Preferably, the female connection mechanism comprises a first insulating housing and a high-voltage terminal assembly arranged in the first insulating housing, wherein a micro heat pipe is embedded in the high-voltage terminal assembly, an evaporation end of the micro heat pipe is close to an insertion hole part of the high-voltage terminal assembly, and a condensation end of the micro heat pipe extends to the outside of the first insulating housing and is connected with a radiating fin. Preferably, the plugging end of the first insulating housing is provided with a plugging ring, a plurality of spiral grooves are formed in the inner side of the plugging ring along the circumferential direction, the plugging end of the first insulating housing is provided with at least two clamping grooves concentric with the plugging ring, the first insulating housing is provided with a clamping block mechanism in a sliding manner along the radial direction, and the clamping block mechanism part protrudes out of the outer surface of the fir