A high-voltage and high-current connector

Abstract

The present invention relates to the technical field of connectors, and specifically to a high-voltage, high-current connector, comprising two connecting devices; each connecting device corresponds to a section of cable; the connecting device comprises a mounting post and a terminal; the terminal and the mounting post are connected via an elastic connecting assembly; the elastic connecting assembly is used to provide the terminal with an elastic force extending in an action direction along the axis of the terminal toward the terminal of the other connecting device, so that after the connecting ends of the terminals of the two connecting devices are plugged in, initial pressure is generated between the two plugged-in terminals, ensuring the conduction of current between the two plugged-in terminals. At the same time, the elastic connecting assembly enables a movable connection between the terminal and the mounting post. Under working conditions such as external vibration and other mechanical stress, the vibration is absorbed by the elastic connecting assembly, ensuring that there is basically no relative movement between the terminals, and can effectively avoid micro-motion damage during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a high-voltage and high-current connector. Background Art

[0002] A high-voltage connector is an electromechanical connection component designed for high-voltage (usually referring to an operating voltage ≥60V) and high-current transmission scenarios. High-voltage connectors are responsible for transmitting high-voltage and high-current signals, and their reliability directly affects the safety and life of the equipment. High-voltage connectors are used to safely and reliably connect two sections of cable, enabling the safe transmission of high current between the two sections of cable. High-voltage connectors are primarily a two-piece design: consisting of a plug (metal contact terminals on the male end) and a socket (metal contact terminals on the female end). The contact terminals on the male end are crimped to the wire core of one of the cables, and the contact terminals on the female end are crimped to the wire core of the other cable. When in use, the plug and socket are plugged together so that the contact terminals on the male end and the contact terminals on the female end abut against each other to form a complete circuit.

[0003] However, under external mechanical stresses such as vibration, the contact interface between the male and female connector terminals can experience micrometer-level relative sliding (fretting wear), leading to increased contact resistance, abnormal temperature rise, and even arcing. In high-voltage and high-current scenarios, fretting wear accelerates oxidation of the contact material and the accumulation of wear debris, causing contact failure and compromising the safe transmission of current between the two cable segments. Summary of the Invention

[0004] The present invention provides a high-voltage and high-current connector to solve the above problems.

[0005] A high-voltage, high-current connector of the present invention adopts the following technical solution: a high-voltage, high-current connector comprises two symmetrically arranged connecting devices; each connecting device corresponds to a section of cable.

[0006] The connecting device includes a mounting post and a terminal; the mounting post is coaxially arranged between two sections of cable; the mounting posts of the two connecting devices are threadedly connected through a protective connecting assembly; and a shell is provided at one end of the mounting post away from the other connecting device.

[0007] There are multiple terminals; each terminal corresponds to a core of the cable; the terminal is cylindrical, arranged between two sections of cable, and coaxial with the corresponding core; the terminal slides with the mounting column along the axis of the mounting column; one end of the terminal is crimped with the corresponding core, and the other end is set as the connecting end; the connecting ends of the terminals of the two connecting devices are plugged in and fitted; the terminals and the mounting column are connected by an elastic connecting component; the connecting end of the terminal of one connecting device is conical, and the connecting end of the terminal of the other connecting device is cylindrical, and the inner wall is conical.

[0008] The elastic connection assembly is arranged in the housing; the elastic connection assembly is used to provide the terminal with an elastic force extending along the axis of the terminal toward the terminal of the other connecting device, so that after the connecting ends of the terminals of the two connecting devices are plugged in, initial pressure exists between the two plugged terminals, ensuring the conduction of current between the two plugged terminals. At the same time, the elastic connection assembly enables a movable connection between the terminal and the mounting column. Under working conditions such as external vibration and other mechanical stress, the vibration is absorbed by the elastic connection assembly, ensuring that there is basically no relative movement between the terminals, which can effectively avoid micro-motion damage during operation. The elastic connection assembly includes a limit ring, a middle ring, and a fixed structure. The limit ring is coaxially fixed to the side wall of the terminal and is located at the end of the terminal away from the other connecting device. The central ring is sleeved on the outside of the wire core and is located on the side of the mounting post away from the other connecting device. Two bellows are installed on the central ring, and the two bellows are symmetrically distributed on both sides of the central ring along its axis. The bellows are sleeved on the wire core, with the end closest to the central ring fixedly connected to the central ring and the end away from the central ring being fixed with a top ring. The top ring of the bellows close to the mounting post abuts against a retaining ring, and the top ring of the bellows away from the mounting post abuts against the wire core via a wire clamp structure. An elastic frame is fixed to the outer wall of the bellows. The fixing structure is used to fix the central ring to the mounting post, and the bellows close to the mounting post and the corresponding elastic frame are in a compressed and force-accumulating state, so that the retaining ring presses against the mounting post, providing an elastic force for the terminal to extend along the terminal axis toward the terminal of the other connecting device. The elastic skeleton includes elastic ribs; there are multiple elastic ribs, which are evenly distributed along the circumference of the bellows; the length direction of the elastic ribs extends along the axial direction of the bellows; the elastic ribs are corrugated; the troughs of the elastic ribs are fixedly connected to the crests of the bellows; and multiple reinforcing ribs are fixedly connected between adjacent elastic ribs.

[0009] Furthermore, the fixing structure includes a fixing tube and a compression tube; the fixing tube is arranged between the mounting column and the middle ring; the fixing tube is coaxially sleeved on the outside of the corrugated tube; and the fixing tube and the mounting column are fixedly connected.

[0010] The compression tube is arranged on the side of the central ring away from the mounting post; the radius of the inner wall of the compression tube is smaller than the maximum distance from the elastic rib to the axis of the bellows in the initial state; the compression tube sleeve is arranged on the outside of the bellows; the inner wall of the compression tube and the elastic rib on the bellows away from the mounting post press against each other, increasing the spacing between the crests of the elastic rib, thereby causing the bellows away from the mounting post to stretch and extend; the upper end of the inner wall of the compression tube is funnel-shaped with an opening facing the mounting post; a connecting tube is coaxially fixed to the outer wall of the compression tube; the connecting tube and the fixed tube are threaded together; the compression tube and the fixed tube limit the position of the central ring and clamp it in place. When the compression tube is moved closer to the mounting post along the core, the bellows away from the mounting post of the two bellows at its original length is inserted into the compression tube. Since the radius of the inner wall of the compression tube is smaller than the maximum distance from the elastic rib to the axis of the bellows in the initial state, the inner wall of the compression tube and the elastic rib on the bellows away from the mounting post are pressed against each other, so that the distance between the crests of the elastic rib increases, thereby driving the bellows away from the mounting post to stretch and extend, pushing the middle ring closer to the mounting post, compressing the bellows close to the mounting post and the corresponding elastic rib, so that the limit ring is pressed against the mounting post, providing the terminal with an elastic force that extends along the axis of the terminal toward the terminal of another connecting device.

[0011] Furthermore, the wire clamp structure includes a wire clamp ring and a locking ring.

[0012] The wire clamp ring is arranged on the side of the corrugated tube away from the middle ring of the installation column of the same connecting device; the wire clamp ring is slidably sleeved on the wire core; the wire clamp ring abuts against the top ring of the corrugated tube away from the installation column; a plurality of elastic blocks are distributed in a ring at one end of the wire clamp ring away from the installation column; a rubber sealing ring is provided between the elastic block and the wire core.

[0013] The locking ring is positioned over the wire clamp ring. The end closest to the mounting post is threadedly engaged with the wire clamp ring, while the inner wall of the end away from the mounting post serves as a locking wall. The locking wall is funnel-shaped, opening toward the mounting post. The locking wall abuts against the elastic block. The outer diameter of the locking ring is smaller than the inner diameter of the compression tube. Twisting the locking ring causes it to move toward the mounting post, and the locking wall forces the elastic block to deform toward the axis of the wire core, increasing the pressure between the sealing ring and the outer sheath of the wire core, tightening the wire clamp ring to the wire core and enhancing the seal between the sealing ring and the outer sheath of the wire core. Replacing the traditional packing seal with a double bellows seal seals the terminal and cable, as well as between adjacent terminals. This effectively improves the sealing level and lifespan, and prevents seal failure during vibration and assembly and disassembly.

[0014] Furthermore, a rubber sealing ring is fixed on the end surface of the top ring away from the middle ring.

[0015] Furthermore, the protective connection assembly includes two protective tubes, one for each mounting post. The protective tubes are pivotally connected to the mounting post at one end proximal to the mounting post, while the other end distal to the mounting post is threadedly engaged with a corresponding protective tube of the mounting post of another connecting device. After the connecting ends of the terminals of the two connecting devices are aligned, the two protective tubes are threadedly engaged, forcing the mounting posts of the two connecting devices toward each other, thereby achieving plug-in mating of the terminals of the two connecting devices.

[0016] Furthermore, a sealing cylinder is provided within the cavity enclosed by the two protective cylinders. One end of the sealing cylinder is fixedly connected to the mounting post of one of the connecting devices, and the other end is fixed with a sealing gasket. The sealing gasket is annular and abuts against the mounting post of the other connecting device, thereby enhancing the sealing performance at the connecting ends of the terminals of the two connecting devices.

[0017] Furthermore, the outer shell includes a rotating cylinder and an outer cylinder; the rotating cylinder is rotatably mounted on one end of the mounting column away from another connecting device; the outer cylinder is sleeved on the outside of the connecting device; the outer cylinder and the rotating cylinder are threadedly connected; the rotating cylinder is rotated to thread the outer cylinder and the rotating cylinder.

[0018] Furthermore, the bellows is made of metal to act as a shielding cover to effectively and safely isolate electromagnetic interference.

[0019] The beneficial effects of the present invention are:

[0020] 1. The elastic connection component provides the terminal with an elastic force extending along the axis of the terminal toward the terminal of the other connecting device, so that after the connecting ends of the terminals of the two connecting devices are plugged in, initial pressure exists between the two plugged terminals, ensuring the conduction of current between the two plugged terminals. At the same time, the elastic connection component enables a movable connection between the terminal and the mounting column. Under working conditions such as external vibration and other mechanical stress, the vibration is absorbed by the elastic connection component, ensuring that there is basically no relative movement between the terminals, which can effectively avoid micro-motion damage during operation.

[0021] 2. The traditional packing seal is changed to a double bellows seal to achieve sealing between the terminal and the cable, as well as between adjacent terminals. This can effectively improve the sealing level, increase the sealing life, and prevent sealing failure during vibration and loading and unloading.

[0022] 3. The bellows is made of metal and acts as a shield to effectively and safely isolate electromagnetic interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of an embodiment of a high-voltage, high-current connector of the present invention;

[0025] Figure 2 An exploded view of an embodiment of a high-voltage and high-current connector of the present invention;

[0026] Figure 3 A front view of an embodiment of a high-voltage and high-current connector of the present invention;

[0027] Figure 4 for Figure 3 Cross-sectional view at AA in the middle;

[0028] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0029] Figure 6 for Figure 4 Enlarged view of point C in the middle;

[0030] Figure 7 A schematic diagram of a bellows of an embodiment of a high-voltage, high-current connector of the present invention;

[0031] Figure 8 The figure is a schematic diagram of a wire clamp ring of an embodiment of a high-voltage and high-current connector of the present invention.

[0032] In the figure: 100, cable; 110, wire core; 200, mounting column; 300, outer shell; 310, rotating drum; 320, outer cylinder; 410, protective cylinder; 420, sealing cylinder; 421, sealing gasket; 500, terminal; 610, limiting ring; 620, middle ring; 630, bellows; 631, top ring; 710, fixing tube; 720, pressing tube; 730, connecting tube; 810, wire clamp ring; 811, elastic block; 820, locking ring; 830, sealing ring; 910, elastic rib; 920, reinforcing rib. DETAILED DESCRIPTION

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] An embodiment of a high voltage and high current connector of the present invention is as follows Figures 1 to 8 As shown, a high-voltage and high-current connector includes two symmetrically arranged connecting devices; each connecting device corresponds to a section of cable 100.

[0035] The connecting device includes a mounting post 200 and a terminal 500. The mounting post 200 is coaxially arranged between two cable sections 100. The mounting posts 200 of the two connecting devices are threadedly connected via a protective connecting assembly. The protective connecting assembly includes a protective tube 410. Two protective tubes 410 are provided, each corresponding to a mounting post 200. The end of the protective tube 410 closest to the mounting post 200 is rotatably connected to the mounting post 200, while the end away from the mounting post 200 is threadedly engaged with the corresponding protective tube 410 of the mounting post 200 of the other connecting device. After the connecting ends of the terminals 500 of the two connecting devices are aligned, the two protective tubes 410 are threadedly connected, driving the mounting posts 200 of the two connecting devices closer together, thereby achieving plug-in mating of the terminals 500 of the two connecting devices. A sealing sleeve 420 is located within the cavity enclosed by the two protective sleeves 410. One end of the sealing sleeve 420 is fixedly connected to the mounting post 200 of one of the connecting devices, and the other end is fixed with a sealing gasket 421. The sealing gasket 421 is annular and abuts against the mounting post 200 of the other connecting device, thereby enhancing the sealing performance at the connection between the terminals 500 of the two connecting devices.

[0036] A housing 300 is provided at the end of the mounting post 200 away from the other connecting device. The housing 300 includes a rotating cylinder 310 and an outer cylinder 320. The rotating cylinder 310 is rotatably mounted on the end of the mounting post 200 away from the other connecting device. The outer cylinder 320 is sleeved onto the outside of the connecting device. The outer cylinder 320 and the rotating cylinder 310 are threadedly connected. Rotating the rotating cylinder 310 causes the outer cylinder 320 to threadably connect to the rotating cylinder 310.

[0037] There are multiple terminals 500; each terminal 500 corresponds to a core 110 of the cable 100; the terminal 500 is cylindrical, arranged between two sections of cable 100, and coaxial with the corresponding core 110; the terminal 500 slides with the mounting column 200 along the axis of the mounting column 200; one end of the terminal 500 is crimped with the corresponding core 110, and the other end is set as a connecting end; the connecting ends of the terminals 500 of the two connecting devices are plugged in and fitted; the terminal 500 and the mounting column 200 are connected by an elastic connecting component; the connecting end of the terminal 500 of one connecting device is conical, and the connecting end of the other connecting device is cylindrical, and the inner wall is conical.

[0038] The elastic connection component is arranged in the housing 300; the elastic connection component is used to provide the terminal 500 with an elastic force extending along the axis of the terminal 500 toward the terminal 500 of the other connecting device, so that after the connecting ends of the terminals 500 of the two connecting devices are plugged in, initial pressure exists between the two plugged terminals 500, ensuring the conduction of current between the two plugged terminals 500. At the same time, the elastic connection component enables a movable connection between the terminal 500 and the mounting column 200. Under working conditions such as external vibration and other mechanical stress, the vibration is absorbed by the elastic connection component, ensuring that there is basically no relative movement between the terminals 500, which can effectively avoid micro-motion damage during operation.

[0039] In this embodiment, the elastic connection assembly includes a limiting ring 610, a middle ring 620, and a fixing structure. The limiting ring 610 is coaxially fixed to the side wall of the terminal 500 and is located at the end of the terminal 500 away from the other connecting device.

[0040] The middle ring 620 is positioned outside the wire core 110 and on the side of the mounting post 200 away from the other connecting devices. Two bellows 630 are mounted on the middle ring 620, symmetrically located on either side of the ring's axis. The bellows 630 are made of metal, acting as a shield to effectively and safely isolate electromagnetic interference. The bellows 630 fits over the wire core 110, with the end closest to the middle ring 620 fixedly connected to it. A top ring 631 is secured to the end away from the middle ring 620. A rubber sealing ring is secured to the end of the top ring 631 away from the middle ring 620. The top ring 631 on the side of the bellows 630 closest to the mounting post 200 abuts against the retaining ring 610. The top ring 631 on the side away from the mounting post 200 abuts against the wire core 110 via a wire clamping structure. The wire clamping structure includes a wire clamping ring 810 and a locking ring 820. The wire clamp ring 810 is arranged on the side of the bellows 630 away from the mounting column 200 of the same connecting device, away from the middle ring 620; the wire clamp ring 810 is slidably sleeved on the wire core 110; the wire clamp ring 810 abuts against the top ring 631 of the bellows 630 away from the mounting column 200; a plurality of elastic blocks 811 are distributed in a ring at one end of the wire clamp ring 810 away from the mounting column 200; a rubber sealing ring 830 is provided between the elastic block 811 and the wire core 110.

[0041] Locking ring 820 is sleeved over wire clamp ring 810. Its end near mounting post 200 is threadedly engaged with wire clamp ring 810, while its inner wall, located away from mounting post 200, serves as a locking wall. The locking wall is funnel-shaped, opening toward mounting post 200. It abuts elastic block 811, and the outer diameter of locking ring 820 is smaller than the inner diameter of compression tube 720. Twisting locking ring 820 forces it toward mounting post 200, causing the locking wall to deform elastic block 811 toward the axis of wire core 110. This increases the pressure between sealing ring 830 and the outer sheath of wire core 110, securing wire clamp ring 810 to wire core 110 and enhancing the seal between sealing ring 830 and the outer sheath of wire core 110. The traditional packing seal is replaced with a double bellows 630 seal to achieve sealing between the terminal 500 and the cable 100, as well as between adjacent terminals 500, which can effectively improve the sealing level, increase the sealing life, and prevent vibration and seal failure during loading and unloading.

[0042] An elastic framework is fixed to the outer wall of the bellows 630. This framework includes multiple elastic ribs 910, evenly distributed along the circumference of the bellows 630. The ribs 910 extend longitudinally along the axial direction of the bellows 630. The ribs 910 are corrugated, with the troughs of the ribs 910 fixedly connected to the crests of the bellows 630. Multiple reinforcing ribs 920 are fixedly connected between adjacent elastic ribs 910.

[0043] The fixing structure secures the middle ring 620 to the mounting post 200 and compresses the bellows 630 and corresponding elastic framework near the mounting post 200. This compresses the retaining ring 610 against the mounting post 200, providing an elastic force for the terminal 500 to extend along the axis of the terminal 500 toward the terminal 500 of the other connection device. The fixing structure includes a fixing tube 710 and a compression tube 720. The fixing tube 710 is positioned between the mounting post 200 and the middle ring 620 and coaxially sleeved around the bellows 630. The fixing tube 710 is fixedly connected to the mounting post 200.

[0044] The compression tube 720 is arranged on the side of the middle ring 620 away from the mounting column 200; the radius of the inner wall of the compression tube 720 is smaller than the maximum distance from the elastic rib 910 to the axis of the bellows 630 in the initial state; the compression tube 720 is sleeved on the outside of the bellows 630; the inner wall of the compression tube 720 and the elastic rib 910 on the bellows 630 away from the mounting column 200 press against each other, so that the spacing between the peaks of the elastic rib 910 increases, thereby driving the bellows 630 away from the mounting column 200 to stretch and extend; the upper end of the inner wall of the compression tube 720 is funnel-shaped with an opening facing the mounting column 200; a connecting tube 730 is coaxially fixed to the outer wall of the compression tube 720; the connecting tube 730 and the fixing tube 710 are threaded together; the compression tube 720 and the fixing tube 710 limit and clamp the middle ring 620. As the compression tube 720 is moved toward the mounting post 200 along the wire core 110, the bellows 630 of the two bellows 630 at its original length, which is farther from the mounting post 200, is inserted into the compression tube 720. Because the radius of the inner wall of the compression tube 720 is smaller than the maximum distance between the elastic rib 910 and the axis of the bellows 630 in its initial state, the inner wall of the compression tube 720 and the elastic rib 910 on the bellows 630 farther from the mounting post 200 press against each other, increasing the distance between the crests of the elastic rib 910. This causes the bellows 630 farther from the mounting post 200 to stretch and extend, pushing the middle ring 620 toward the mounting post 200, compressing the bellows 630 and the corresponding elastic rib 910 closer to the mounting post 200, and causing the limit ring 610 to press against the mounting post 200, thereby providing an elastic force for the terminal 500 to extend along the axis of the terminal 500 toward the terminal 500 of the other connecting device.

[0045] In conjunction with the above embodiments, the operating principle and process of the present invention are as follows: First, remove the outer sheath of cable 100, remove the core 110, and then remove the outer sheath and shielding layer at the end of core 110 to expose the metal portion of core 110. Then, install the wire clamp ring 810, compression tube 720, and then corrugated tube 630 in sequence. Finally, insert the metal portion of core 110 into terminal 500 for crimping. Next, first install outer barrel 320 onto cable 100, and then install mounting post 200 onto terminal 500. Adjust the position of the wire clamp ring 810 so that the top ring 631 on the bellows 630 close to the mounting column 200 abuts against the limit ring 610, and the top ring 631 on the bellows 630 away from the mounting column 200 abuts against the wire clamp ring 810, and then twist the locking ring 820 to drive the locking ring 820 to move toward the mounting column 200. The locking wall drives the elastic block 811 to deform toward the axis of the wire core 110, increasing the pressure between the sealing ring 830 and the outer skin of the wire core 110, fastening the wire clamp ring 810 to the wire core 110, and enhancing the sealing between the sealing ring 830 and the outer skin of the wire core 110.

[0046] The second step is to drive the compression tube 720 to approach the installation column 200 along the wire core 110. In the process of moving the compression tube 720 along the wire core 110 to approach the installation column 200, the bellows 630 at the original length, which is away from the installation column 200, is inserted into the compression tube 720. Since the radius of the inner wall of the compression tube 720 is smaller than the maximum distance from the elastic rib 910 to the axis of the bellows 630 in the initial state, the inner wall of the compression tube 720 and the elastic rib 910 on the bellows 630 away from the installation column 200 are pressed, so that the distance between the peaks of the elastic rib 910 increases, so as to drive the bellows 630 away from the installation column 200 to stretch and extend, and push the middle ring 620 to approach the installation column 200, so as to compress the bellows 630 close to the installation column 200 and the corresponding elastic rib 910, so that the limit ring 610 is pressed against the installation column 200, providing a terminal 500. An elastic force extends in one direction along the axis of the terminal 500 toward the terminal 500 of the other connecting device, so that after the connecting ends of the terminals 500 of the two connecting devices are plugged in, initial pressure is generated between the two plugged terminals 500, ensuring the conduction of current between the two plugged terminals 500. At the same time, the elastic connection component enables a movable connection between the terminal 500 and the mounting column 200. Under conditions such as external vibration and other mechanical stress, the vibration is absorbed by the elastic connection component, ensuring that there is basically no relative movement between the terminals 500, which can effectively avoid micro-motion damage during operation. When the connecting tube 730 and the fixed tube 710 are abutted, the connecting tube 730 is rotated to make the connecting tube 730 and the fixed tube 710 threaded together; the compression tube 720 and the fixed tube 710 limit and clamp the middle ring 620.

[0047] After the above connection is completed, the rotating drum 310 is rotated to threadably connect the outer drum 320 to the rotating drum 310. This completes the connection between one connecting device and the corresponding cable 100 segment. After the other connecting device is installed in the same manner, the connecting ends of the terminals 500 of the two connecting devices are aligned. The two protective cylinders 410 are then threaded together, forcing the mounting posts 200 of the two connecting devices toward each other, allowing the terminals 500 of the two connecting devices to plug and mate, thus completing the connection between the two cable segments 100.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high voltage and high current connector, characterized by: It includes two symmetrically arranged connecting devices; each connecting device corresponds to a section of cable; The connecting device includes a mounting post and a terminal; the mounting post is coaxially arranged between two sections of cable; the mounting posts of the two connecting devices are threadedly connected via a protective connecting assembly; a housing is provided at one end of the mounting post away from the other connecting device; There are multiple terminals; each terminal corresponds to a wire core of the cable; the terminal is cylindrical, located between two sections of cable, and is coaxial with the corresponding wire core; the terminal slides with the mounting post along the axis of the mounting post; one end of the terminal is crimped with the corresponding wire core, and the other end is a connecting end; the connecting ends of the terminals of the two connecting devices are plugged into each other; the terminal and the mounting post are connected by an elastic connecting component; The elastic connection assembly is arranged in the housing; the elastic connection assembly is used to provide the terminal with an elastic force extending along the axis of the terminal toward the terminal of another connecting device; the elastic connection assembly includes a limit ring, a middle ring, and a fixing structure; the limit ring is coaxially fixed to the side wall of the terminal and is located at the end of the terminal away from the other connecting device; the middle ring is sleeved on the outside of the wire core and is located on the side of the mounting column away from the other connecting device; two bellows are provided on the middle ring; the two bellows are symmetrically distributed on both sides of the middle ring along the axis of the middle ring; the bellows are sleeved on the wire core, and the end close to the middle ring is fixedly connected to the middle ring, and the end away from the middle ring is fixed to the middle ring. A top ring is fixed at the end; the top ring on the bellows close to the mounting column is in contact with the limit ring; the top ring on the bellows away from the mounting column is in contact with the wire core through the wire clamp structure; an elastic skeleton is fixed on the outer wall of the bellows; the fixing structure is used to fix the middle ring on the mounting column, and to keep the bellows close to the mounting column and the corresponding elastic skeleton in a compressed and force-storing state; the elastic skeleton includes elastic ribs; there are multiple elastic ribs, which are evenly distributed along the circumference of the bellows; the length direction of the elastic ribs extends along the axial direction of the bellows; the elastic ribs are corrugated; the elastic ribs and the bellows are fixedly connected; multiple reinforcing ribs are fixedly connected between adjacent elastic ribs.

2. A high-voltage, high-current connector according to claim 1, characterized in that: The fixing structure includes a fixing pipe and a compression pipe; the fixing pipe is arranged between the mounting column and the middle ring; the fixing pipe is coaxially sleeved on the outside of the corrugated pipe; the fixing pipe and the mounting column are fixedly connected; The compression tube is arranged on the side of the middle ring away from the mounting column; the radius of the inner wall of the compression tube is smaller than the maximum distance from the elastic rib to the axis of the bellows in the initial state; the compression tube sleeve is arranged on the outside of the bellows; the inner wall of the compression tube and the elastic rib on the bellows away from the mounting column are pressed; the upper end of the inner wall of the compression tube is funnel-shaped with the opening facing the mounting column; a connecting tube is coaxially fixed on the outer wall of the compression tube; the connecting tube and the fixed tube are threaded together; the compression tube and the fixed tube limit the middle ring and clamp it.

3. A high-voltage, high-current connector according to claim 2, characterized in that: The wire clamp structure includes a wire clamp ring and a locking ring; The wire clamp ring is arranged on a side of the corrugated pipe away from the middle ring of the mounting post of the same connection device; the wire clamp ring is slidably sleeved on the wire core; the wire clamp ring abuts against the top ring of the corrugated pipe away from the mounting post; a plurality of elastic blocks are distributed in an annular manner on the end of the wire clamp ring away from the mounting post; a rubber sealing ring is provided between the elastic blocks and the wire core; The locking ring is sleeved outside the wire clamp ring, and the end close to the mounting column is threadedly matched with the wire clamp ring, and the inner wall of the end away from the mounting column is set as a locking wall; the locking wall is funnel-shaped with the opening facing the mounting column; the locking wall abuts against the elastic block; the outer diameter of the locking ring is smaller than the inner diameter of the compression tube.

4. A high-voltage, high-current connector according to claim 3, characterized in that: A rubber sealing ring is fixed on the end surface of the top ring away from the middle ring.

5. The high-voltage, high-current connector according to claim 4, characterized in that: The protective connection assembly includes a protective tube; two protective tubes are provided, each corresponding to a mounting column; the end of the protective tube close to the mounting column is rotatably connected to the mounting column, and the end away from the mounting column is threadedly engaged with the protective tube corresponding to the mounting column of another connecting device.

6. The high-voltage, high-current connector according to claim 5, characterized in that: A sealing cylinder is provided in the cavity surrounded by the two protective cylinders; one end of the sealing cylinder is fixedly connected to the mounting post of one of the connecting devices, and the other end is fixed with a sealing gasket; the sealing gasket is annular; and the sealing gasket abuts against the mounting post of the other connecting device.

7. The high-voltage, high-current connector according to claim 6, characterized in that: The outer shell includes a rotating cylinder and an outer cylinder; the rotating cylinder is rotatably mounted on one end of the mounting column away from another connecting device; the outer cylinder is sleeved on the outside of the connecting device; and the outer cylinder and the rotating cylinder are threadedly connected.

8. A high-voltage, high-current connector according to any one of claims 1 to 7, characterized in that: The bellows is made of metal.

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