High-voltage wiring harness connecting device for new energy automobile

Abstract

The invention discloses a high-voltage wiring harness connecting device for a new energy automobile, and relates to the technical field of high-voltage connection of new energy automobiles, and the high-voltage wiring harness connecting device comprises a rectangular limiting sleeve which is fixedly connected to an automobile body; the four sliding damping mechanisms are arranged on the four inner side walls of the limiting sleeve respectively; the sleeve is connected with the four sliding damping mechanisms through four telescopic rods, and the sleeve is in sealed connection with the end of the limiting sleeve through an elastic sealing gasket; the female head connecting mechanism is arranged in the sleeve in a sliding mode in the axial direction, and an axial elastic damping piece is arranged between the female head connecting mechanism and the sleeve; the male head connecting mechanism can be matched with the female head connecting mechanism in an inserting manner; the sliding damping mechanism comprises a sliding cylinder fixedly embedded in the inner wall of the limiting sleeve, and a sliding cavity is formed in the sliding cylinder. Multi-dimensional efficient damping and self-adaptive damping can be achieved.

Description

Technical Field

[0001] This invention relates to the field of high-voltage connection technology for new energy vehicles, specifically a high-voltage wiring harness connection device for new energy vehicles. Background Technology

[0002] High-voltage wiring harnesses in new energy vehicles are critical nodes for energy transfer between core components such as batteries, motors, and electronic controls. As vehicle architecture evolves towards 800V high-voltage platforms, these wiring harnesses need to withstand higher voltages and currents, while also facing more stringent reliability requirements.

[0003] Existing high-voltage connectors mainly suffer from the following technical problems: First, the continuous vibration during vehicle operation causes fretting wear at the contact interface of the connector's internal terminals. This wear removes the silver plating layer from the terminal surface, resulting in insulating oxides, which increases contact resistance, intensifies temperature rise, and may eventually burn out the connector. Second, the locking mechanism of existing connectors is mostly a single straight-insertion snap-fit, which is prone to loosening under severe vibration. Furthermore, it lacks reliable secondary locking and anti-misinsertion structures and cannot offset the frictional losses caused by vehicle vibration, thus reducing the connector's service life.

[0004] Therefore, it is necessary to provide a high-voltage wiring harness connection device for new energy vehicles to solve the problems mentioned in the background art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage wiring harness connection device for new energy vehicles, comprising: a limiting sleeve, which is rectangular and fixedly connected to the vehicle body; four sliding damping mechanisms, respectively disposed on the four inner sidewalls of the limiting sleeve; a sleeve, which is connected to the four sliding damping mechanisms through four telescopic rods, and the ends of the sleeve and the limiting sleeve are sealed together by elastic sealing gaskets; a female connector mechanism, which is slidably disposed in the sleeve along the axial direction, and an axial elastic damping element is disposed between the female connector mechanism and the sleeve; and a male connector mechanism, which can be inserted and engaged with the female connector mechanism. The sliding damping mechanism includes a sliding cylinder fixedly embedded in the inner wall of the limiting sleeve. A sliding cavity is formed inside the sliding cylinder. A partition is slidably disposed in the sliding cavity. Support rods are symmetrically fixed at both ends of the partition. The two support rods pass through both ends of the sliding cylinder and are slidably connected to the sliding cylinder in a sealed manner. A push plate is fixedly disposed at the end of the support rod. A first spring is disposed between the push plate and the limiting sleeve. An mounting plate is fixedly disposed between the two support rods. The two ends of the telescopic rod are respectively fixed to the mounting plate and the sleeve.

[0006] Preferably, the partition divides the interior of the sliding cavity into two chambers, and the partition has a plurality of damping holes for connecting the two chambers; the sliding cavity is filled with a damping fluid, which is silicone oil or magnetorheological fluid.

[0007] Preferably, when the damping fluid is a magnetorheological fluid, an excitation coil is provided outside the slide cylinder, and the excitation coil is electrically connected to the vehicle controller to adjust the damping force according to the vehicle vibration state.

[0008] Preferably, a sealing ring is provided on the outer periphery of the partition, and a wear-resistant coating is provided on the inner wall of the sliding cavity.

[0009] Preferably, a flexible conductive strip is connected between the sleeve and the limiting sleeve to form a first grounding path; an elastic conductive contact finger is provided between the female head connecting mechanism and the sleeve to form a second grounding path.

[0010] Preferably, the female connector mechanism includes a first insulating shell and a high-voltage terminal assembly disposed inside the first insulating shell. The high-voltage terminal assembly has a miniature heat pipe embedded inside. The evaporation end of the miniature heat pipe is close to the insertion hole of the high-voltage terminal assembly, and its condensation end extends to the outside of the first insulating shell and is connected to heat dissipation fins.

[0011] Preferably, the first insulating shell has a plug-in ring at its plug-in end, and the plug-in ring has a plurality of spiral grooves circumferentially formed on its inner side. The first insulating shell has at least two snap-fit ​​grooves concentric with the plug-in ring at its plug-in end. A snap-fit ​​mechanism is slidably provided on the first insulating shell in the radial direction, and the snap-fit ​​mechanism partially protrudes from the outer surface of the first insulating shell.

[0012] Preferably, the male connector mechanism includes a second insulating shell and a plug-in assembly adapted to the high-voltage terminal assembly disposed on the second insulating shell. A retaining ring is rotatably disposed on the outer side of the second insulating shell, and multiple threaded strips adapted to the spiral groove are fixedly disposed on the outer side of the retaining ring. At least two retaining rods adapted to the snap-fit ​​groove are fixedly disposed on the end of the retaining ring along the axial direction.

[0013] Preferably, the locking mechanism includes a T-shaped slide bar, the first insulating shell has a groove for the T-shaped slide bar to slide, a second spring is provided between the bottom of the T-shaped slide bar and the first insulating shell, and a locking block with an inclined surface is fixedly provided on the T-shaped slide bar. The locking bar can slide into the locking groove and can push the locking block and the T-shaped slide bar to slide through the inclined surface.

[0014] Preferably, the inner wall of the sleeve is provided with a plurality of slide rails along the axial direction; the outer wall of the first insulating shell is fixedly provided with a plurality of sliders adapted to the slide rails.

[0015] Compared with the prior art, the present invention provides a high-voltage wiring harness connection device for new energy vehicles, which has the following advantages: First, multi-dimensional high-efficiency vibration reduction completely eliminates fretting wear; four sliding damping mechanisms are arranged in a rectangular shape, with two parallel pairs, which accurately decomposes the planar motion of the sleeve into linear motions in two orthogonal directions, X and Y. The motions in each direction are independent and do not interfere with each other; the baffle and damping fluid work together to convert vibration energy into heat energy through the throttling effect of the damping orifice, achieving high-efficiency vibration reduction; the planar floating of the sleeve and the axial sliding of the female connector mechanism are decoupled from each other, and the male and female terminal contact interfaces always remain relatively stationary, fundamentally eliminating fretting wear and extending the service life of the connector.

[0016] Secondly, the damping characteristics are independently adjustable to adapt to different working conditions; the damping characteristics in the X and Y directions can be designed separately (e.g., using damping fluids of different viscosities or damping orifices of different diameters) to adapt to different longitudinal and lateral vibration characteristics of the vehicle; and when magnetorheological fluid is used, the damping force can be adjusted in real time through the excitation coil to achieve adaptive vibration reduction.

[0017] Third, the spiral locking mechanism combined with the secondary locking of the locking block provides excellent anti-loosening performance. The spiral groove and the threaded strip work together to achieve rotational locking, generating axial locking force to prevent loosening due to vibration. The locking block mechanism provides secondary locking; after the locking rod is in place, the locking block automatically resets and locks, and the double locking structure ensures reliable connection. The inclined surface design of the locking block enables automatic locking without additional operation. Pressing the T-shaped slide bar unlocks the device, making operation convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the limiting sleeve in this invention; Figure 3 This is a schematic diagram of the sliding damping mechanism in this invention; Figure 4 This is a schematic diagram of the female connector mechanism in this invention; Figure 5 This is a schematic diagram of the block mechanism in this invention; Figure 6 This is a schematic diagram of the male connector mechanism in this invention; In the diagram: 1. Limiting sleeve; 11. Mounting groove; 2. Sliding damping mechanism; 21. Slide cylinder; 22. Slide cavity; 221. First cavity; 222. Second cavity; 23. Partition plate; 231. Damping hole; 24. Support rod; 25. Push plate; 26. First spring; 27. Mounting plate; 3. Sleeve; 31. Slide rail; 32. Elastic sealing gasket; 4. Female connector mechanism; 41. First insulating shell; 411. Heat dissipation fins; 412. Plug ring; 413. Spiral groove; 414. Snap-fit ​​groove; 415. Slider; 42. High voltage terminal assembly; 43. Locking block mechanism; 431. T-shaped slide rod; 432. Second spring; 433. Locking block; 5. Male connector mechanism; 51. Second insulating shell; 52. Plug assembly; 53. Snap ring; 531. Threaded strip; 532. Locking rod; 6. Telescopic rod. Detailed Implementation

[0019] Please see Figures 1-6 In this embodiment of the invention, a high-voltage wiring harness connection device for new energy vehicles includes a limiting sleeve 1 fixed to the vehicle body, four sliding damping mechanisms 2 disposed in the limiting sleeve 1, a sleeve 3 connected to the sliding damping mechanisms 2, a female connector 4 slidably disposed in the sleeve 3 along the axial direction, and a male connector 5 that is inserted and engaged with the female connector 4.

[0020] The limiting sleeve 1 is made of high-strength aluminum alloy material and is formed into a rectangular frame structure and fixedly connected to the mounting bracket of the vehicle body or electrical equipment. The four inner side walls of the limiting sleeve 1 are planar structures, and each inner side wall is provided with a mounting groove 11 for installing the sliding damping mechanism 2.

[0021] Four sliding damping mechanisms 2 are respectively fixedly installed in the mounting grooves 11 on the four inner side walls of the limiting sleeve 1. Each sliding damping mechanism 2 includes a slide cylinder 21, a partition plate 23, a support rod 24, a push plate 25, a first spring 26, and a mounting plate 27.

[0022] The slide cylinder 21 is a cylindrical structure made of stainless steel, and its outer wall is fixedly connected to the limiting sleeve 1. A cylindrical slide cavity 22 is formed inside the slide cylinder 21 along the axial direction. End caps are provided at the openings at both ends of the slide cavity 22, and a through hole is provided in the center of the end cap for the support rod 24 to slide through in a sealed manner.

[0023] The partition 23 is a circular plate structure made of lightweight, high-strength aluminum alloy. Its outer diameter is precisely matched with the inner diameter of the sliding cavity 22. The partition 23 is slidably disposed in the sliding cavity 22, dividing the interior of the sliding cavity 22 into two independent cavities, namely the first cavity 221 and the second cavity 222. Multiple damping holes 231 are evenly opened on the partition 23 along the circumference, and the damping holes 231 connect the first cavity 221 and the second cavity 222. The diameter of the damping holes 231 is designed according to the required damping characteristics.

[0024] Support rods 24 are symmetrically fixed at both ends of the partition 23. The support rods 24 are slender rod-shaped structures made of stainless steel. The two support rods 24 extend to the outside of the slide cylinder 21 through the through holes on the end caps at both ends of the slide cylinder 21. A sealing ring is provided between the support rods 24 and the end caps to achieve a sealed sliding connection. A push plate 25 is fixedly installed at the end of the support rod 24. The push plate 25 is a circular plate-shaped structure. A first spring 26 is provided between the push plate 25 and the limiting sleeve 1. One end of the first spring 26 abuts against the push plate 25, and the other end abuts against the inner wall of the limiting sleeve 1. The first spring 26 is a compression spring and is always in a pre-compressed state to provide an inward restoring force for the support rods 24.

[0025] An mounting plate 27 is fixedly installed between the two support rods 24, and the two ends of the mounting plate 27 are fixedly connected to the two support rods 24 respectively.

[0026] The sliding cavity 22 is filled with damping fluid; in this embodiment, the damping fluid is high-viscosity silicone oil; when silicone oil is used, the size of the damping orifice 231 and the viscosity of the silicone oil together determine the damping characteristics; when magnetorheological fluid is used, the damping force can be adjusted by an external magnetic field.

[0027] The outer periphery of the partition 23 is provided with an annular sealing groove, and a sealing ring is installed in the sealing groove. The sealing ring is an O-ring with a polytetrafluoroethylene coating, which has the characteristics of low friction and wear resistance; the inner wall of the sliding cavity 22 is provided with a wear-resistant coating.

[0028] In this embodiment, the sleeve 3 is a cylindrical structure made of aluminum alloy, and its axial direction is consistent with the axial direction of the limiting sleeve 1; four telescopic rods 6 are provided around the outer wall of the sleeve 3; the sleeve 3 is connected to the four sliding damping mechanisms 2 through the four telescopic rods 6, and the ends of the sleeve 3 and the limiting sleeve 1 are sealed and connected by elastic sealing gaskets 32.

[0029] The telescopic rod 6 is a rod-shaped structure with an adjustable length, and the other end of the telescopic rod 6 is fixedly connected to the mounting plate 27 of the sliding damping mechanism 2.

[0030] Specifically, through the above connection, the sleeve 3 is suspended between the four sliding damping mechanisms 2 by four telescopic rods 6 respectively. When the sleeve 3 moves in a plane perpendicular to its axis, the four telescopic rods 6 decompose the two-dimensional planar motion of the sleeve 3 into the linear motion of the support rods 24 of the four sliding damping mechanisms 2.

[0031] In this embodiment, the female connector mechanism 4 includes a first insulating shell 41, a high-voltage terminal assembly 42 disposed inside the first insulating shell 41, and a locking mechanism 43.

[0032] The first insulating shell 41 is injection molded from high-strength engineering plastic, which has excellent insulation performance and mechanical strength. The first insulating shell 41 is a cylindrical structure, and multiple sliders 415 are evenly arranged on its outer wall along the circumference.

[0033] The inner wall of the sleeve 3 is provided with multiple slide rails 31 that are adapted to the slider 415 along the axial direction. The slider 415 is slidably installed in the slide rail 31 to realize the sliding connection of the female head connection mechanism 4 along the axial direction of the sleeve 3. An axial elastic damping element is provided between the female head connection mechanism 4 and the sleeve 3. In this embodiment, the axial elastic damping element is a ring spring, one end of which abuts against the first insulating shell 41 and the other end abuts against the end face of the sleeve 3 to provide axial restoring force for the female head connection mechanism 4.

[0034] The high-voltage terminal assembly 42 includes a socket portion, a crimping portion, and a connecting portion. The socket portion is located at the front end and is used to engage with the pin of the male connector mechanism 5. A crown spring is provided inside the socket portion. The crown spring is made of beryllium copper alloy and is silver-plated on the surface to provide multi-point elastic contact. The crimping portion is located at the rear end and is used to crimp and connect with the conductor of the high-voltage wire harness. The connecting portion connects the socket portion and the crimping portion. The high-voltage terminal assembly 42 is made entirely of high-conductivity copper alloy and is silver-plated on the surface.

[0035] The high-voltage terminal assembly 42 has a miniature heat pipe embedded inside. The miniature heat pipe has a flat structure and is arranged along the axial direction of the high-voltage terminal assembly 42. Its evaporation end is close to the inner wall of the socket, and its condensation end extends to the outside of the first insulating shell 41 and is connected to heat dissipation fins 411. The heat dissipation fins 411 are thin aluminum alloy sheets arranged radially to increase the heat dissipation area.

[0036] The first insulating shell 41 has a plug-in ring 412 at its plug-in end. The plug-in ring 412 is a circular ring structure and is integrally formed with the first insulating shell 41. The inner side of the plug-in ring 412 has multiple spiral grooves 413 along the circumferential direction, which are used to cooperate with the threaded strip 531 of the male connector mechanism 5 to achieve rotational locking. The end face of the plug-in end of the first insulating shell 41 has two snap-fit ​​grooves 414 concentric with the plug-in ring 412. The snap-fit ​​grooves 414 are axially extending blind holes used to accommodate the snap-fit ​​rod 532 of the male connector mechanism 5.

[0037] A locking mechanism 43 is radially slidably disposed on the first insulating shell 41. The locking mechanism 43 includes a T-shaped slide rod 431, a second spring 432, and a locking block 433. A groove for sliding the T-shaped slide rod 431 is provided on the first insulating shell 41, and the groove extends radially. The T-shaped slide rod 431 is slidably disposed in the groove, and a second spring 432 is disposed between its bottom and the first insulating shell 41. The second spring 432 is a compression spring and is always in a pre-compressed state, pushing the T-shaped slide rod 431 outward. A locking block 433 is fixedly disposed on one side of the T-shaped slide rod 431. The locking block 433 has an inclined surface and a vertical surface. The inclined surface faces the insertion direction and is used to be pushed by the locking rod 532 when the male connector 5 is inserted. The vertical surface faces away from the insertion direction and is used to lock the locking rod 532 after insertion to prevent loosening.

[0038] In this embodiment, the male connector mechanism 5 includes a second insulating shell 51, a plug-in assembly 52, and a retaining ring 53.

[0039] The second insulating shell 51 is injection molded from high-strength engineering plastic and has an overall cylindrical structure. The plug assembly 52 is located at the front end of the second insulating shell 51 and includes multiple pins. The position and number of the pins correspond one-to-one with the socket of the high-voltage terminal assembly 42. The pins are made of copper alloy material and are silver-plated on the surface.

[0040] A retaining ring 53 is rotatably provided on the outer side of the second insulating shell 51. The retaining ring 53 is a circular ring structure made of stainless steel and is rotatably installed on the outer periphery of the second insulating shell 51 via bearings. Multiple threaded bars 531 that are adapted to the spiral groove 413 are fixedly provided on the outer side of the retaining ring 53. The threaded bars 531 are spiral in shape and match the pitch and direction of the spiral groove 413. Two retaining rods 532 that are adapted to the retaining groove 414 are fixedly provided on the front end of the retaining ring 53 along the axial direction. The retaining rods 532 are cylindrical in structure.

[0041] This embodiment adopts a dual grounding path design to ensure that the floating component can maintain a stable grounding connection in any position.

[0042] First grounding path: A flexible conductive strip is connected between the sleeve 3 and the limiting sleeve 1; the flexible conductive strip is a multi-layered copper foil structure, and its length is greater than the maximum floating displacement of the sleeve 3; one end of the flexible conductive strip is fixed to the outer wall of the sleeve 3, and the other end is fixed to the inner wall of the limiting sleeve 1, forming a direct electrical conduction path; this path is used for low-frequency high-current grounding to ensure safe discharge under abnormal conditions such as electric shock.

[0043] Second grounding path: An elastic conductive contact is provided between the female connector 4 and the sleeve 3; the elastic conductive contact is a multi-row helical spring contact made of beryllium copper alloy material, with a silver-plated surface, and is installed in the annular groove on the outer wall of the first insulating shell 41; when the female connector 4 is installed in the sleeve 3, the elastic conductive contact is compressed between the first insulating shell 41 and the sleeve 3, always maintaining contact, forming a continuous low-impedance grounding path; this path is used for high-frequency low-current grounding and provides good electromagnetic shielding effect.

[0044] When the vehicle vibrates during operation, the vibration is transmitted to the limiting sleeve 1 through the vehicle body. The vibration of the limiting sleeve 1 causes the slide cylinders 21 of the four sliding damping mechanisms 2 to vibrate together. However, due to inertia, the sleeve 3 and the female head connection mechanism 4 tend to maintain their original positions, thereby generating relative displacement with the limiting sleeve 1.

[0045] The four sliding damping mechanisms 2 are arranged in a rectangle, with two parallel along the X direction and two parallel along the Y direction; any movement of the sleeve 3 in a plane perpendicular to its axis can be decomposed into displacements in the X and Y directions.

[0046] When the sleeve 3 produces X-direction displacement: the support rod 24 in the sliding damping mechanism 2 in the Y-direction will slide under force, thereby driving the partition 23 to slide along the sliding cavity 22, so that the damping fluid flows through the damping hole 231 between the first cavity 221 and the second cavity 222, thereby generating damping force; at this time, the support rods 24 in the two sliding damping mechanisms 2 in the X-direction are basically stationary, only providing lateral support, while the telescopic rod 6 in the X-direction will extend and retract synchronously.

[0047] When the sleeve 3 produces a displacement in the Y direction: the support rod 24 in the sliding damping mechanism 2 in the X direction will slide under force, thereby driving the partition 23 to slide along the sliding cavity 22, so that the damping fluid flows through the damping hole 231 between the first cavity 221 and the second cavity 222, thereby generating a damping force; at this time, the support rods 24 in the two sliding damping mechanisms 2 in the Y direction are basically stationary, only providing axial support, while the telescopic rod 6 in the Y direction will extend and retract synchronously.

[0048] When the sleeve 3 simultaneously generates displacement in the X and Y directions: the support rods 24 of the four sliding damping mechanisms 2 simultaneously generate sliding in the corresponding directions, generating damping force, and the four telescopic rods 6 will extend and retract synchronously.

[0049] This allows the four sliding damping mechanisms 2 to precisely decompose the two-dimensional planar motion of the sleeve 3 into linear motions in two orthogonal directions, X and Y. The motion in each direction is buffered by damping force and the restoring force of the first spring 26. The throttling effect of the damping hole 231 converts the vibration energy into heat energy and dissipates it, thus achieving efficient vibration reduction.

[0050] Meanwhile, when the high-voltage harness is subjected to axial tensile force, the female connector mechanism 4 can slide axially within the sleeve 3, and the axial impact is absorbed by the axial elastic damping element to prevent the axial force from being transmitted to the terminal contact interface.

[0051] Since the planar floating of the sleeve 3 and the axial sliding of the female connector 4 are decoupled from each other, and the posture of the female connector 4 remains unchanged during the movement, the contact interface between the high-voltage terminal assembly 42 and the pin 521 of the male connector 5 always remains relatively stationary, thus fundamentally eliminating fretting wear.

[0052] Furthermore, when high voltage and high current pass through, Joule heating is generated at the terminal contact interface, and the heat is concentrated in the insertion part. The evaporation end of the micro heat pipe absorbs heat, the internal phase change working fluid evaporates, and the vapor carries latent heat and flows rapidly to the condensation end, where it condenses and releases heat at the heat dissipation fins 411. The heat is dissipated into the surrounding air through the heat dissipation fins 411. The condensed liquid working fluid flows back to the evaporation end through the capillary action of the wick, forming a continuous phase change cycle. Because the phase change heat transfer efficiency of the working fluid inside the heat pipe is extremely high, it can quickly conduct heat from the terminal and effectively control the temperature rise.

[0053] The connection operation between the male connector 5 and the female connector 4 is as follows: First, align the pin of the male connector 5 with the insertion hole 421 of the female connector 4. Push the male connector 5 forward, insert the pin into the insertion hole, and the crown spring will elastically deform to form a low-resistance contact. As the male connector 5 slides, the retaining ring 53 will contact the insertion ring 412. At this time, align the spiral groove 413 with the threaded bar 531, and simultaneously align the retaining rod 532 with the retaining groove 414. After alignment, rotate the retaining ring 53 so that the threaded bar 531 is screwed into the spiral groove 413, thereby causing the retaining ring 53 to generate axial displacement, further pulling the male connector 5 towards the female connector 4 until the pin is fully inserted. During this process, the retaining rod 532 will slide into the retaining groove 414 and move along the retaining groove 414 as the retaining ring 53 rotates. When the locking rod 532 rotates along the locking groove 414 to contact the locking block 433, the locking rod 532 will push the locking block 433 to slide under the action of the inclined plane. The sliding of the locking block 433 will disengage from the blocking rod 532 and compress the second spring 432. When the locking rod 532 slides away from the locking block 433, the locking block 433 will reset under the action of the second spring 432 and block the locking rod 532 again. At this time, the locking rod 532 just slides to the end of the locking groove 414, and the threaded bar 531 and the spiral groove 413 are completely screwed together. At this time, because the locking rod 532 is restricted by the locking block 433 and cannot reset to slide, the locking ring 53 cannot slide out of the insertion ring 412, so that the male head connection mechanism 5 and the female head connection mechanism 4 are tightly connected together and locked.

[0054] When it is necessary to separate the male connector 5 from the female connector 4, first press the T-shaped slide bar 431 so that the locking block 433 slides away from the blocking bar 532, then rotate the retaining ring 53 in the opposite direction so that the threaded bar 531 exits the spiral groove 413, and the male connector 5 can be pulled out.

[0055] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-voltage wiring harness connection device for new energy vehicles, characterized in that, include: Limiting sleeve (1), which is rectangular and fixedly connected to the vehicle body; Four sliding damping mechanisms (2) are respectively disposed on the four inner sidewalls of the limiting sleeve (1); The sleeve (3) is connected to the four sliding damping mechanisms (2) by four telescopic rods (6), and the end of the sleeve (3) is sealed to the end of the limiting sleeve (1) by an elastic sealing gasket (32). The female head connection mechanism (4) is slidably disposed in the sleeve (3) along the axial direction, and an axial elastic damping element is provided between the female head connection mechanism (4) and the sleeve (3); The male connector (5) is capable of being plugged into the female connector (4); The sliding damping mechanism (2) includes a slide cylinder (21) fixedly embedded in the inner wall of the limiting sleeve (1). A sliding cavity (22) is formed inside the slide cylinder (21). A partition plate (23) is slidably disposed in the sliding cavity (22). Support rods (24) are symmetrically fixed at both ends of the partition plate (23). The two support rods (24) penetrate both ends of the slide cylinder (21) and are slidably connected to the slide cylinder (21). A push plate (25) is fixedly disposed at the end of the support rod (24). A first spring (26) is disposed between the push plate (25) and the limiting sleeve (1). An mounting plate (27) is fixedly disposed between the two support rods (24). The two ends of the telescopic rod (6) are fixedly connected to the mounting plate (27) and the sleeve (3) respectively.

2. The high-voltage wiring harness connection device for new energy vehicles according to claim 1, characterized in that, The partition (23) divides the interior of the sliding cavity (22) into two cavities, and the partition (23) is provided with a plurality of damping holes (231) for connecting the two cavities; The sliding cavity (22) is filled with a damping fluid, which is silicone oil or magnetorheological fluid.

3. The high-voltage wiring harness connection device for new energy vehicles according to claim 2, characterized in that, When the damping fluid is a magnetorheological fluid, an excitation coil is provided outside the slide (21). The excitation coil is electrically connected to the vehicle controller and is used to adjust the damping force according to the vehicle vibration state.

4. The high-voltage wiring harness connection device for new energy vehicles according to claim 1, characterized in that, A sealing ring is provided on the outer periphery of the partition (23), and a wear-resistant coating is provided on the inner wall of the sliding cavity (22).

5. A high-voltage wiring harness connection device for new energy vehicles according to claim 1, characterized in that, A flexible conductive strip is connected between the sleeve (3) and the limiting sleeve (1) to form a first grounding path; An elastic conductive contact finger is provided between the female connector (4) and the sleeve (3) to form a second grounding path.

6. A high-voltage wiring harness connection device for new energy vehicles according to claim 1, characterized in that, The female connector mechanism (4) includes a first insulating shell (41) and a high-voltage terminal assembly (42) disposed inside the first insulating shell (41). The high-voltage terminal assembly (42) is embedded with a micro heat pipe. The evaporation end of the micro heat pipe is close to the insertion hole of the high-voltage terminal assembly (42), and its condensation end extends to the outside of the first insulating shell (41) and is connected to a heat dissipation fin (411).

7. A high-voltage wiring harness connection device for new energy vehicles according to claim 6, characterized in that, The first insulating shell (41) has a plug-in ring (412) at its plug-in end. The plug-in ring (412) has a plurality of spiral grooves (413) circumferentially opened on its inner side. The first insulating shell (41) has at least two snap-fit ​​grooves (414) concentric with the plug-in ring (412) at its plug-in end. A snap-fit ​​mechanism (43) is slidably arranged on the first insulating shell (41) radially. The snap-fit ​​mechanism (43) partially protrudes from the outer surface of the first insulating shell (41).

8. A high-voltage wiring harness connection device for new energy vehicles according to claim 7, characterized in that, The male connector mechanism (5) includes a second insulating shell (51) and a plug-in assembly (52) adapted to the high-voltage terminal assembly (42) disposed on the second insulating shell (51). A retaining ring (53) is rotatably disposed on the outer side of the second insulating shell (51). Multiple threaded strips (531) adapted to the spiral groove (413) are fixedly disposed on the outer side of the retaining ring (53). At least two retaining rods (532) adapted to the retaining groove (414) are fixedly disposed on the end of the retaining ring (53) along the axial direction.

9. A high-voltage wiring harness connection device for new energy vehicles according to claim 8, characterized in that, The locking mechanism (43) includes a T-shaped slide bar (431). The first insulating shell (41) has a groove for the T-shaped slide bar (431) to slide. A second spring (432) is provided between the bottom of the T-shaped slide bar (431) and the first insulating shell (41). A locking block (433) with an inclined surface is fixedly provided on the T-shaped slide bar (431). The locking bar (532) can slide into the locking groove (414) and can push the locking block (433) and the T-shaped slide bar (431) to slide through the inclined surface.

10. A high-voltage wiring harness connection device for new energy vehicles according to claim 6, characterized in that, The inner wall of the sleeve (3) is provided with multiple slide rails (31) along the axial direction; The outer wall of the first insulating shell (41) is fixedly provided with a plurality of sliders (415) adapted to the slide rail (31).

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