A new energy vehicle connecting cable detection device

Abstract

This invention provides a testing device for new energy vehicle connecting cables, used to perform lateral and longitudinal torsion on the cable and determine the cable's power transmission efficiency under different degrees of torsion. The testing device includes a base frame and a mounting plate; the mounting plate is fixedly connected to the upper side of the base frame. This invention enables the testing of new energy vehicle cables. Based on the cable's characteristics, a corresponding clamping method is used to keep the cable taut, and the cable is torsioned laterally and longitudinally to simulate the torsion angles in various directions when the cable is installed in a vehicle. The device determines the cable's power transmission efficiency under different degrees of torsion, identifies the limit torsion angle during cable installation to extend the cable's service life, and uses torsion to determine the firmness of the cable's injection-molded connection.

Description

Technical Field

[0001] This invention belongs to the field of automotive cable testing, specifically a testing device for connecting cables in new energy vehicles. Background Technology

[0002] Power cables, especially high-voltage cables for new energy vehicles, serve as the carriers connecting various components. Ensuring their own safety and reliability, as well as that of the components, is of great importance. Under some extreme working conditions, power cables and components may experience overcurrent or overheating. Continuous operation at high temperatures will greatly reduce the service life of power cables and components, affecting the safety performance of the entire vehicle.

[0003] In existing technologies, the testing methods for automotive cables all involve cutting off a section for individual testing, without simulating the actual usage conditions of the automotive cable. This leads to discrepancies between the tested data and the actual usage conditions. Furthermore, there are various ways to connect existing automotive cables. For example, the connection method for cross cables involves injecting a small square at the connection point to connect the two cables. However, there is no testing method for cross cables in existing testing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a testing device for connecting cables of new energy vehicles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A testing device for connecting cables of new energy vehicles includes a base frame and a mounting plate; the mounting plate is fixedly connected to the upper side of the base frame.

[0007] It also includes a fixing component, a first limiting wheel, a clamping component, a second limiting block, a torsion component, a third limiting block, and a fourth limiting block; the fixing component is connected to the left side of the mounting plate; multiple first limiting wheels for limiting the cable are connected to the fixing component; the clamping component is connected to the right side of the mounting plate; several second limiting blocks for clamping the cable are connected to the clamping component; the torsion component is connected to the mounting plate; several third limiting blocks are connected to the torsion component; the same number of fourth limiting blocks as the third limiting blocks are connected to the torsion component, and the fourth limiting blocks are located below the third limiting blocks.

[0008] As a further preferred option, both the third and fourth limiting blocks are set to arc shapes.

[0009] As a further preferred embodiment, the fixing assembly includes a limiting plate, a first connecting plate, a first electric push rod, a first limiting block, a first electric slide rail, a first electric slider, a second electric slide rail, a second electric slider, a second connecting plate, a second electric push rod, a third connecting plate, a first elastic element, a first bearing seat, a second limiting wheel, a third elastic element, and a limiting component; the left side of the mounting plate is connected to the limiting plate; the upper left side of the mounting plate is fixedly connected to the first connecting plate; two first electric push rods symmetrically arranged front and rear are fixedly connected to the first connecting plate; the telescopic ends of the two first electric push rods are jointly fixedly connected to the first limiting block; the upper part of the mounting plate is fixedly connected to two first electric slide rails symmetrically arranged front and rear; each of the two first electric slide rails is slidably connected to a first electric slider; the two first... The electric sliders are all fixedly connected to a second connecting plate; at least six second electric push rods are fixedly connected to the second connecting plate in a equidistant arrangement; each second electric push rod has a limiting component fixedly connected to its telescopic end; two second electric slide rails are fixedly connected to the lower part of the mounting plate in a symmetrical arrangement; each of the two second electric slide rails has a second electric slider slidably connected to it; the two second electric sliders are all fixedly connected to a third connecting plate; multiple sets of first elastic elements are fixedly connected to the third connecting plate; each set of first elastic elements has a first bearing seat fixedly connected to it; each first bearing seat has a second limiting wheel slidably connected to it; each first bearing seat has two third elastic elements fixedly connected to it in a symmetrical arrangement, with one end of each third elastic element fixedly connected to a second limiting wheel.

[0010] As a further preferred option, both the limiting plate and the first limiting block are provided with arc-shaped grooves, and multiple soft protrusions are provided in the arc-shaped grooves.

[0011] As a further preferred embodiment, each limiting component includes a second bearing seat and a second elastic element; each telescopic end of the second electric push rod is fixedly connected to a second bearing seat; each second bearing seat is slidably connected to a first limiting wheel; each second bearing seat is fixedly connected to two second elastic elements arranged symmetrically front and back; one end of each of the two second elastic elements is fixedly connected to the first limiting wheel.

[0012] As a further preferred embodiment, the clamping assembly includes a third electric push rod, a third electric slide rail, a third electric slider, a fourth connecting plate, and clamping components; four third electric push rods are fixedly connected in a slot on the mounting plate; the telescopic ends of the four third electric push rods are respectively fixedly connected to a second limiting block; two symmetrically arranged third electric slide rails are fixedly connected to the right side of the mounting plate; each of the two third electric slide rails is slidably connected to a third electric slider; the two third electric sliders are jointly fixedly connected to the fourth connecting plate; and several clamping components are connected to the fourth connecting plate at equal intervals.

[0013] As a further preferred embodiment, each clamping component includes a detection cylinder, a first electric clamp, a first connecting rod, and a fourth elastic element; the fourth connecting plate is slidably connected to the detection cylinder for detecting the power transmission efficiency of the bent cable; the first electric clamp is installed on the left side of the detection cylinder; two first connecting rods symmetrically arranged front and back are fixedly connected to the detection cylinder, and the first connecting rods are slidably connected to the fourth connecting plate; each of the two first connecting rods is fixedly connected to a fourth elastic element, and the fourth elastic element is fixedly connected to the fourth connecting plate.

[0014] As a further preferred embodiment, the torsion assembly includes a fourth electric slide rail, a fourth electric slider, a fifth connecting plate, and a toggle component; two fourth electric slide rails symmetrically arranged front and back are fixedly connected to the upper side of the mounting plate; each of the two fourth electric slide rails is slidably connected to a fourth electric slider; the two fourth electric sliders are jointly fixedly connected to the fifth connecting plate; the fifth connecting plate has the same number of toggle components as the first limit wheels, distributed equidistantly front and back.

[0015] As a further preferred embodiment, each actuating component includes a motor, a first spur gear, an L-shaped plate, a fourth electric push rod, a second electric clamp, a bushing, a second spur gear, a sixth connecting plate, a fifth electric push rod, a connecting plate, a second connecting rod, a first detection head, a fifth elastic element, and a second detection head; the fifth connecting plate is fixedly connected to the motor; the motor output shaft is fixedly connected to the first spur gear; the fifth connecting plate is fixedly connected to the L-shaped plate, which is located in front of the motor; the L-shaped plate is fixedly connected to the fourth electric push rod, which passes through the fifth connecting plate; the telescopic part of the fourth electric push rod is provided with a second electric clamp; the fifth connecting plate is rotatably connected to the bushing; the upper part of the bushing is fixedly connected to the second spur gear, which meshes with the first spur gear; the bushing is fixedly connected to several sixth connecting plates that are equidistantly distributed vertically; if Two fifth electric push rods, arranged symmetrically front to back, are fixedly connected to a sixth connecting plate. Each of the telescopic parts of the two fifth electric push rods is fixedly connected to a connecting plate. Each of the two connecting plates is fixedly connected to a second connecting rod. The upper part of the outer ring surface of the second connecting rod has four annularly arranged sliding grooves. The two second connecting rods are slidably connected to a third limiting block. The lower side of each of the two second connecting rods is fixedly connected to a fourth limiting block. The lower part of each of the two second connecting rods is fixedly connected to multiple first detection heads arranged in annularly and equidistantly. The sliding grooves on the two second connecting rods are fixedly connected to several fifth elastic elements arranged in annularly and equidistantly. The upper part of each of the two second connecting rods is slidably connected to the same number of second detection heads arranged in annularly and equidistantly as the fifth elastic elements. The second detection heads are fixedly connected to the fifth elastic elements.

[0016] As a further preferred embodiment, a sixth elastic element is also included. Each third limiting block is fixedly connected to a sixth elastic element on its upper side. The sixth elastic element is located on the outer ring surface of the second connecting rod and is fixedly connected to the connecting disc. Beneficial effects

[0017] This invention enables the testing of cables for new energy vehicles. Based on the characteristics of the cable, a corresponding clamping method is adopted to keep the cable in a taut state, and the cable is twisted laterally and longitudinally to simulate the twisting angle in various directions when the cable is installed on a car. The power transmission efficiency of the cable under different degrees of twisting is determined, the limit twisting angle during cable installation is determined to extend the service life of the cable, and the twisting method is used to determine the firmness of the injection-molded connection of the cable. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the first structure of the new energy vehicle connection cable testing device of the present invention;

[0020] Figure 2 This is a schematic diagram of the second structure of the new energy vehicle connection cable detection device of the present invention;

[0021] Figure 3 This is a schematic diagram of the first structure of the fixing component of the new energy vehicle connection cable detection device of the present invention;

[0022] Figure 4 This is a schematic diagram of a second structure of the fixing component of the new energy vehicle connection cable detection device of the present invention;

[0023] Figure 5 This is a partial structural schematic diagram of the fixing component of the new energy vehicle connection cable detection device of the present invention;

[0024] Figure 6 This is a schematic diagram of the clamping assembly of the new energy vehicle connection cable detection device of the present invention;

[0025] Figure 7 This is a schematic diagram of the torsion assembly of the new energy vehicle connection cable detection device of the present invention;

[0026] Figure 8 This is a schematic diagram of a first partial structure of the torsion assembly of the new energy vehicle connection cable detection device of the present invention.

[0027] Figure 9 This is a schematic diagram of a second partial structure of the torsion assembly of the new energy vehicle connection cable detection device of the present invention.

[0028] Wherein: 1-base frame, 2-mounting plate, 3-fixing component, 4-clamping component, 5-torsion component;

[0029] 301-Limiting plate, 302-First connecting plate, 303-First electric push rod, 304-First limiting block, 305-First electric slide rail, 306-First electric slider, 307-Second electric slide rail, 308-Second electric slider, 309-Second connecting plate, 3010-Second electric push rod, 3011-Second bearing seat, 3012-First limiting wheel, 3013-Second elastic element, 3014-Third connecting plate, 3015-First elastic element, 3016-First bearing seat, 3017-Second limiting wheel, 3018-Third elastic element;

[0030] 401-Third electric push rod, 402-Second limit block, 403-Third electric slide rail, 404-Third electric slider, 405-Fourth connecting plate, 406-Detection cylinder, 407-First electric clamp, 408-First connecting rod, 409-Fourth elastic element;

[0031] 501-Fourth electric slide rail, 502-Fourth electric slider, 503-Fifth connecting plate, 504-Motor, 505-First spur gear, 506-L-shaped plate, 507-Fourth electric push rod, 508-Second electric clamp, 509-Busset, 5010-Second spur gear, 5011-Sixth connecting plate, 5012-Fifth electric push rod, 5013-Connecting disc, 5014-Second connecting rod, 5015-Third limiting block, 5016-Sixth elastic element, 5017-Fourth limiting block, 5018-First detection head, 5019-Fifth elastic element, 5020-Second detection head. Detailed Implementation

[0032] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0033] Example 1

[0034] refer to Figure 1-8 The device shown is a testing device for connecting cables of new energy vehicles, including a base frame 1 and a mounting plate 2; the mounting plate 2 is fixedly connected to the upper side of the base frame 1.

[0035] It also includes a fixing component 3, a first limiting wheel 3012, a clamping component 4, a second limiting block 402, a torsion component 5, a third limiting block 5015, and a fourth limiting block 5017; the fixing component 3 is connected to the left side of the mounting plate 2; six first limiting wheels 3012 are connected to the fixing component 3; the clamping component 4 is connected to the right side of the mounting plate 2; four second limiting blocks 402 are connected to the clamping component 4, and the four second limiting blocks 402 are symmetrically arranged in pairs; the torsion component 5 is connected to the upper middle part of the mounting plate 2; twelve third limiting blocks 5015 are connected to the torsion component 5; twelve fourth limiting blocks 5017 are connected to the torsion component 5, and the fourth limiting blocks 5017 are located below the third limiting blocks 5015. The torsion component 5 drives the third limiting blocks 5015 and the fourth limiting blocks 5017 to limit the cable and bend the cable to detect the power transmission efficiency after the cable is bent.

[0036] In one embodiment of the present invention, both the third limiting block 5015 and the fourth limiting block 5017 are configured as arc-shaped to fit the cable surface, thereby facilitating cable inspection.

[0037] First, the staff installs the new energy vehicle connection cable testing device in the required location. Then, an external power supply is used to control the operation and debugging of the new energy vehicle connection cable testing device. Next, the staff places the cable to be tested on the fixing component 3. Then, the fixing component 3 drives the first limit wheel 3012 to clamp and fix one end of the cable. Then, the clamping component 4 clamps the other end of the cable. At the same time, the clamping component 4 drives the second limit block 402 to clamp the cable. Then, the clamping component 4 pulls the cable so that cables of different lengths are all in a taut state, which facilitates subsequent cable testing. Next, the cable is laterally twisted by the torsion component 5, causing the cable to bend. At the same time, the staff uses an external current detector connected to the cable's junction end, and then transmits current through the bent part of the cable and inputs it to the clamping component 4 for detection to determine the current loss of the cable during lateral torsion. Then, the torsion component 5 drives the third limit block 5015 and the fourth limit block 5017 to limit the cable and bend the cable to detect the power transmission efficiency after the cable is bent.

[0038] Example 2

[0039] Based on Example 1, such as Figure 3-6As shown, the fixing assembly 3 includes a limiting plate 301, a first connecting plate 302, a first electric push rod 303, a first limiting block 304, a first electric slide rail 305, a first electric slider 306, a second electric slide rail 307, a second electric slider 308, a second connecting plate 309, a second electric push rod 3010, a third connecting plate 3014, a first elastic element 3015, a first bearing seat 3016, a second limiting wheel 3017, a third elastic element 3018, and a limiting component; the mounting plate 2 is connected to the limiting plate 301 on the opposite left side, and the limiting plate 301 is... A rubber pad is provided on the surface; a first connecting plate 302 is fixedly connected to the upper left side of the mounting plate 2; two first electric push rods 303 are bolted to the first connecting plate 302, and the two first electric push rods 303 are symmetrically distributed front and back; the telescopic ends of the two first electric push rods 303 are fixedly connected to a first limiting block 304, and the surface of the first limiting block 304 is provided with a rubber pad; two first electric slide rails 305 are bolted to the upper part of the opposite side of the mounting plate 2, and are symmetrically distributed front and back; each of the two first electric slide rails 305 is slidably connected to a first electric slider 306; the two first electric... A second connecting plate 309 is fixedly connected to the opposite sides of the movable slider 306; six second electric push rods 3010 are bolted to the second connecting plate 309 and are distributed equidistantly in the front and back; each second electric push rod 3010 has a limiting component fixedly connected to its telescopic end; two second electric slide rails 307 are bolted to the lower part of the opposite sides of the mounting plate 2, and the two second electric slide rails 307 are symmetrically distributed in the front and back; each of the two second electric slide rails 307 is slidably connected to a second electric slider 308; the two second electric sliders 308 are fixedly connected to a third connecting plate 308 on their opposite sides. Plate 3014; Six sets of first elastic elements 3015 are fixedly connected to the third connecting plate 3014, and the first elastic elements 3015 are springs; a first bearing seat 3016 is fixedly connected to the upper side of each set of first elastic elements 3015; a second limiting wheel 3017 is slidably connected to the upper part of each first bearing seat 3016; two third elastic elements 3018 are fixedly connected to each first bearing seat 3016 in a front-to-back symmetrical manner, one end of the two third elastic elements 3018 is fixedly connected to the second limiting wheel 3017, and the third elastic elements 3018 are springs.

[0040] In one embodiment of the present invention, both the limiting plate 301 and the first limiting block 304 are provided with arc-shaped grooves for placing the cable assembly end and engaging the cable assembly end. The arc-shaped grooves are provided with multiple soft protrusions to increase the engaging force on the cable assembly end and avoid damaging the cable assembly end.

[0041] Each limiting component includes a second bearing seat 3011 and a second elastic element 3013; each second electric push rod 3010 has a second bearing seat 3011 fixedly connected to its telescopic end; each second bearing seat 3011 is slidably connected to a first limiting wheel 3012; each second bearing seat 3011 has two second elastic elements 3013 fixedly connected in a front-to-back symmetrical manner, the second elastic elements 3013 being springs; one end of each of the two second elastic elements 3013 is fixedly connected to the first limiting wheel 3012.

[0042] The clamping assembly 4 includes a third electric push rod 401, a third electric slide rail 403, a third electric slider 404, a fourth connecting plate 405, and clamping components. Four rectangular third electric push rods 401 are bolted into a groove on the mounting plate 2. The telescopic ends of the four third electric push rods 401 are respectively fixedly connected to a second limiting block 402. Two third electric slide rails 403 are bolted to the opposite right side of the mounting plate 2. The two third electric slide rails 403 are symmetrically distributed front and back. Each of the two third electric slide rails 403 is slidably connected to a third electric slider 404. The two third electric sliders 404 are fixedly connected to the opposite sides of the fourth connecting plate 405. Six clamping components are connected to the fourth connecting plate 405 and are distributed equidistantly front and back.

[0043] Each clamping component includes a detection cylinder 406, a first electric clamp 407, a first connecting rod 408, and a fourth elastic element 409; the detection cylinder 406 is slidably connected to the rear of the fourth connecting plate 405; the first electric clamp 407 is bolted to the left side of the detection cylinder 406; two first connecting rods 408 are fixedly connected to the detection cylinder 406 in a symmetrical manner, and the first connecting rods 408 are slidably connected to the fourth connecting plate 405; each of the two first connecting rods 408 is fixedly connected to a fourth elastic element 409, one end of the fourth elastic element 409 is fixedly connected to the fourth connecting plate 405, and the fourth elastic element 409 is a spring.

[0044] When clamping and securing cables of varying lengths:

[0045] When cable testing is required, the operator places the cable's assembly end into the arc-shaped groove on the limiting plate 301. Then, the first electric push rod 303 is controlled to push the first limiting block 304 downwards towards the limiting plate 301. The first limiting block 304 moves downwards and cooperates with the limiting plate 301 to clamp the cable's assembly end. Since the limiting plate 301 and the first limiting block 304 have rubber pads on their surfaces, these pads cover the cable's assembly end, preventing scratches on the cable sheath during subsequent cable movement. Next, the first electric slider 306 is controlled to slide to the right on the first electric slide rail 305. The first electric slider 306 drives the second connecting plate 309 to slide to the right, and the second connecting plate 309 drives... The connected components slide to the right, causing the second electric push rod 3010, the second bearing seat 3011, the first limiting wheel 3012, and the second elastic element 3013 to move to the right. Then, the operator places a single cable onto the lower second limiting wheel 3017. Next, the first electric slider 306 is controlled to move the second connecting plate 309 to the left. The second connecting plate 309 then moves its connected components to the left, aligning the first limiting wheel 3012 with the lower second limiting wheel 3017. Then, all the second electric push rods 3010 are controlled to push their connected second bearing seat 3011 downwards. The second bearing seat 3011 moves the first limiting wheel 3012 downwards towards the cable on the second limiting wheel 3017. The second electric push rod 3010 is controlled to further push the second bearing seat 3011 downward, causing the first limiting wheel 3012 to move further downward and squeeze the cable. The cable will squeeze the second limiting wheel 3017, forcing the second limiting wheel 3017 to move downward. Then, the second limiting wheel 3017 drives the first bearing seat 3016 to compress the first elastic element 3015, thereby fixing the cable. Then, the third electric slider 404 is controlled to slide to the left on the third electric slide rail 403. The third electric slider 404 drives the fourth connecting plate 405 to slide to the left. The fourth connecting plate 405 drives the components connected to it to slide to the left. That is, the fourth connecting plate 405 drives the detection cylinder 406, the first electric clamp 407, the first connecting rod 408 and the fourth elastic element. 409 slides to the left, and then the operator places the other end of the cable into the corresponding detection cylinder 406. Next, the first electric clamp 407 clamps and secures the other end of the cable. Then, the third electric slider 404 drives the fourth connecting plate 405 to slide to the right. The fourth connecting plate 405 drives the connected components to slide to the right, and the fourth connecting plate 405 drives the first electric clamp 407 to move to the right. Consequently, one end of the cable is pulled to the right by the first electric clamp 407. Due to the different cable lengths, the shorter cable will straighten first. Then, as the first electric clamp 407 moves further to the right, the longer cable will straighten. Simultaneously, because the shorter cable is already straightened, as the fourth connecting plate 405 continues to move to the right...The shorter cable pulls the corresponding first electric clamp 407 to the left. The detection cylinder 406 and the first connecting rod 408 move synchronously with the first electric clamp 407. The fourth elastic element 409 is compressed, so that cables of different lengths are all in a taut state, which facilitates subsequent cable inspection. It also avoids the problem that shorter cables are easily stretched and deformed during the straightening process of longer cables due to their different lengths, and in severe cases, they may even break. For the connection of cross cables, the existing connection method is to inject a small square at the connection point to connect the two cables. The two cables connected by the injection block form a cross shape. Therefore, the worker passes the end connector of one of the adjacent branch cables through the slot opened on the mounting plate 2, and then controls the third electric push rod 401 to push the connected second limiting block 402 to move towards each other. The cable is clamped and fixed by the two adjacent second limiting blocks 402, thus completing the fixation of the branch cable.

[0046] Example 3

[0047] Based on Example 2, such as Figure 7-9 As shown, the torsion assembly 5 includes a fourth electric slide rail 501, a fourth electric slider 502, a fifth connecting plate 503, and actuating components; two fourth electric slide rails 501 symmetrically arranged front and back are bolted to the upper center of the mounting plate 2; each of the two fourth electric slide rails 501 is slidably connected to a fourth electric slider 502; the upper sides of the two fourth electric sliders 502 are jointly fixedly connected to the fifth connecting plate 503; six actuating components distributed equidistantly front and back are bolted to the fifth connecting plate 503.

[0048] Each actuating component includes a motor 504, a first spur gear 505, an L-shaped plate 506, a fourth electric push rod 507, a second electric clamp 508, a bushing 509, a second spur gear 5010, a sixth connecting plate 5011, a fifth electric push rod 5012, a connecting disc 5013, a second connecting rod 5014, a first detection head 5018, a fifth elastic element 5019, and a second detection head 5020; the motor 504 is bolted to the upper rear part of the fifth connecting plate 503; the output shaft of the motor 504 is fixedly connected to the first spur gear 505; the L-shaped plate 506 is fixedly connected to the upper rear part of the fifth connecting plate 503. Located in front of motor 504; a fourth electric push rod 507 is bolted to the middle of L-shaped plate 506, and the fourth electric push rod 507 passes through the fifth connecting plate 503; a second electric clamp 508 is bolted to the telescopic part of the fourth electric push rod 507; a bushing 509 is rotatably connected to the fifth connecting plate 503, and the bushing 509 is located on the outer ring surface of the fourth electric push rod 507; a second spur gear 5010 is fixedly connected to the upper part of the bushing 509, and the second spur gear 5010 meshes with the first spur gear 505; three sixth connecting plates 5011 are fixedly connected to the bushing 509 in a vertically equidistant manner; the three sixth connecting plates 5011 are bolted together with two Two fifth electric actuators 5012 are symmetrically arranged front and back. Each of the telescopic parts of the two fifth electric actuators 5012 is fixedly connected to a connecting plate 5013. Each of the two connecting plates 5013 is fixedly connected to a second connecting rod 5014 on its lower side. The upper part of the outer ring surface of the second connecting rod 5014 has four annularly arranged grooves. Through the revolution of the two second connecting rods 5014, the second connecting rods 5014 will force the cable to twist laterally. Then, the operator uses an external detector connected to the cable's collection end, and then transmits current through the bent part of the cable, and then inputs it into the detection cylinder 406 to determine the current loss when the cable twists laterally. The upper parts of the two second connecting rods 5014 are slidably connected to a third limiting block 5015; the lower sides of the two second connecting rods 5014 are fixedly connected to a fourth limiting block 5017; four first detection heads 5018 arranged in a ring and equidistantly are fixedly connected to the lower part of each of the two second connecting rods 5014; four fifth elastic elements 5019 arranged in a ring and equidistantly are fixedly connected to the sliding grooves on the two second connecting rods 5014; four second detection heads 5020 arranged in a ring and equidistantly are slidably connected to the upper part of each of the two second connecting rods 5014, and one end of each second detection head 5020 is fixedly connected to the fifth elastic element 5019.

[0049] It also includes a sixth elastic element 5016. Each third limiting block 5015 has a sixth elastic element 5016 fixedly connected to its upper side. The sixth elastic element 5016 is a spring. The sixth elastic element 5016 is located on the outer ring surface of the second connecting rod 5014, and one end of the sixth elastic element 5016 is fixedly connected to the connecting plate 5013.

[0050] When performing torsion and bending tests on cables:

[0051] After the cable is secured, the fourth electric slider 502 slides on the fourth electric slide rail 501. Then, the fourth electric slider 502 drives the fifth connecting plate 503 to move. The actuating component, the third limit block 5015, and the fourth limit block 5017 move synchronously with the fifth connecting plate 503, moving them to be parallel with the second limit block 402. For ease of description, the following description uses one actuating component as an example. Next, the motor 504 is controlled to rotate the first spur gear 505 by 45 degrees (viewed from top to bottom). The first spur gear 505 drives the second spur gear 5010 to rotate counterclockwise by 45 degrees. The bushing 509, the sixth connecting plate 5011, and the fifth electric push rod 5012 are also involved. Connecting plate 5013, second connecting rod 5014, third limiting block 5015, sixth elastic element 5016, fourth limiting block 5017, first detection head 5018, fifth elastic element 5019, and second detection head 5020 rotate synchronously with the second spur gear 5010, thereby changing the sixth connecting plate 5011 from a horizontal state to an inclined state. This prevents the cable from limiting the fourth limiting block 5017 when it moves downward. Then, the fourth electric push rod 507 is controlled to move the second electric clamp 508 downward, so that the second electric clamp 508 contacts the injection block at the cable connection. Then, the second electric clamp 508 is controlled to work to clamp the injection block. Finally, all fifth electric push rods 5012 are controlled to extend together. The length of the connecting plate 5013 causes it to move downwards. The second connecting rod 5014, the third limiting block 5015, the sixth elastic element 5016, the fourth limiting block 5017, the first detection head 5018, the fifth elastic element 5019, and the second detection head 5020 move synchronously with the connecting plate 5013. Consequently, the injection block at the cable connection point will be positioned between the two second connecting rods 5014. Then, the control motor 504 causes the first spur gear 505 to rotate, which in turn drives the second spur gear 5010 to rotate. The bushing 509 and its connected components will rotate synchronously with the second spur gear 5010. Since the two cables connected by the injection block form a cross shape, and the second connecting rod 5014 is located between the two crossed cables, the second... The connecting rod 5014 will contact the cable, and then, with the further rotation of the connecting plate 5013, the injection block is clamped and limited by the second electric clamp 508, thus forcing the cable to bend. During this process, the cable cannot extend, causing the cable to drive the corresponding first electric clamp 407 to move further to the left. The first electric clamp 407 drives the detection cylinder 406 to slide to the left on the fourth connecting plate 405 and continues to compress the fourth elastic element 409. At the same time, the other end of the cable will drive the corresponding first limiting wheel 3012 and second limiting wheel 3017 to move in the direction of cable torsion and compress the corresponding first elastic element 3015 and third elastic element 3018. Then, the operator uses an external detector to connect to the cable's collection end.The current is then transmitted through the bent section of the cable and input into the detection cylinder 406 to determine the current loss during lateral torsion of the cable. Based on the detection requirements, the corresponding fifth electric push rod 5012 is controlled to move the connecting plate 5013 upwards or downwards. When upward movement is required for bending detection, the corresponding fourth limit block 5017 contacts the cable and pulls the cable upwards, causing an upward bend. Simultaneously, the external detector and detection cylinder 406 determine the current loss at various degrees of bending. During the upward movement of the connecting plate 5013, the first detection head 5018 contacts the cable surface to detect the temperature at the bend after energization. When downward movement is required for bending detection, the fifth electric push rod 5012 is controlled to move the connecting plate 5013 downwards, causing the connecting plate 5013 to move downwards. The connected components move downwards, causing the cable surface to contact the third limiting block 5015 and pushing it upwards. This compresses the sixth elastic element 5016, mitigating the downward pressure exerted on the cable by the third limiting block 5015. This prevents the cable from being subjected to rigid downward pressure during bending, which could cause the injection-molded connection to break. During this process, since the fifth elastic element 5019 is initially in a telescopic state, the second detection head 5020 is pulled by it. This causes the second detection head 5020 to move upwards within the groove on the second connecting rod 5014, maintaining alignment with the cable connection to detect its temperature and assess cable quality.

[0052] Therefore, in this embodiment: the parts of the third limiting block 5015 and the fourth limiting block 5017 bend the cable, and the sixth elastic member 5016 prevents the injection joint of two adjacent cables from being subjected to excessive bending force, which would cause the injection joint to break.

[0053] The technical principles of the embodiments of the present invention have been described above with reference to specific examples. These descriptions are merely for explaining the principles of the embodiments of the present invention and should not be construed as limiting the scope of protection of the embodiments of the present invention in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the embodiments of the present invention.

Claims

1. A testing device for connecting cables of new energy vehicles, comprising a base frame (1); a mounting plate (2) is fixedly connected to the upper side of the base frame (1); characterized in that... ； The mounting plate (2) is connected to a fixing component (3) on the left side; the fixing component (3) is connected to a plurality of first limiting wheels (3012) for limiting the cable; the mounting plate (2) is connected to a clamping component (4) on the right side; the clamping component (4) is connected to a plurality of second limiting blocks (402) for clamping the cable; the mounting plate (2) is connected to a torsion component (5); the torsion component (5) is connected to a plurality of third limiting blocks (5015); the torsion component (5) is connected to a fourth limiting block (5015) in the same number as the third limiting blocks (5015). 5017), the fourth limit block (5017) is located below the third limit block (5015); the external current detector is connected to the cable collection end, and then the current is transmitted through the cable bending part and then input into the clamping assembly (4) for detection to determine the current loss when the cable is twisted laterally. The end connector of one of the adjacent branch cables is passed through the slot opened on the mounting plate (2), and the branch cable is clamped and fixed by the two adjacent second limit blocks (402). The two cables connected by the injection block are in a cross shape. The clamping assembly (4) includes a third electric push rod (401); four third electric push rods (401) are fixedly connected in a slot on the mounting plate (2); the telescopic ends of the four third electric push rods (401) are respectively fixedly connected to a second limiting block (402); two third electric slide rails (403) that are symmetrical in front and behind are fixedly connected to the right side of the mounting plate (2); each of the two third electric slide rails (403) is slidably connected to a third electric slider (404); the two third electric sliders (404) are fixedly connected to a fourth connecting plate (405); a number of clamping components that are equidistant in front and behind are connected to the fourth connecting plate (405); Each clamping component includes a detection cylinder (406); the fourth connecting plate (405) is slidably connected to the detection cylinder (406) for detecting the power transmission efficiency of the bent cable; a first electric clamp (407) is installed on the left side of the detection cylinder (406); two first connecting rods (408) are fixedly connected to the detection cylinder (406) in a front-to-back symmetrical manner, and the first connecting rods (408) are slidably connected to the fourth connecting plate (405); a fourth elastic element (409) is fixedly connected to each of the two first connecting rods (408), and the fourth elastic element (409) is fixedly connected to the fourth connecting plate (405).

2. The new energy vehicle connection cable testing device according to claim 1, characterized in that: Both the third limiting block (5015) and the fourth limiting block (5017) are set to arc shape.

3. The new energy vehicle connection cable testing device according to claim 1, characterized in that: The fixing component (3) includes a limiting plate (301); the left side of the mounting plate (2) is connected to the limiting plate (301); the upper left side of the mounting plate (2) is fixedly connected to a first connecting plate (302); two first electric push rods (303) symmetrically arranged front and back are fixedly connected to the first connecting plate (302); the telescopic ends of the two first electric push rods (303) are jointly fixedly connected to a first limiting block (304); the upper part of the mounting plate (2) is fixedly connected to two first electric slide rails (305) symmetrically arranged front and back; each of the two first electric slide rails (305) is slidably connected to a first electric slider (306); the two first electric sliders (306) are jointly fixedly connected to a second connecting plate (309); at least six second electric push rods (3010) equidistantly distributed front and back are fixedly connected to the second connecting plate (309); each second electric push rod (3010) is fixedly connected to a second electric push rod (3010). 0) Each telescopic end is fixedly connected to a limiting component; the lower part of the mounting plate (2) is fixedly connected to two second electric slide rails (307) that are symmetrical front and back; each of the two second electric slide rails (307) is slidably connected to a second electric slider (308); the two second electric sliders (308) are fixedly connected to a third connecting plate (3014); multiple sets of first elastic elements (3015) are fixedly connected on the third connecting plate (3014); each set of first elastic elements (3015) is fixedly connected to a first bearing seat (3016); each first bearing seat (3016) is slidably connected to a second limiting wheel (3017); each first bearing seat (3016) is fixedly connected to two third elastic elements (3018) that are symmetrical front and back, and one end of each of the two third elastic elements (3018) is fixedly connected to the second limiting wheel (3017).

4. The new energy vehicle connection cable testing device according to claim 3, characterized in that: Both the limiting plate (301) and the first limiting block (304) have arc-shaped grooves, and multiple soft protrusions are provided in the arc-shaped grooves.

5. The new energy vehicle connection cable testing device according to claim 3, characterized in that: Each limiting component includes a second bearing seat (3011); each second electric push rod (3010) has a second bearing seat (3011) fixedly connected to its telescopic end; each second bearing seat (3011) is slidably connected to a first limiting wheel (3012); each second bearing seat (3011) has two second elastic members (3013) fixedly connected to it in a front-to-back symmetrical manner; one end of each of the two second elastic members (3013) is fixedly connected to the first limiting wheel (3012).

6. The new energy vehicle connection cable testing device according to claim 5, characterized in that: The torsion assembly (5) includes a fourth electric slide rail (501); two fourth electric slide rails (501) are fixedly connected to the upper side of the mounting plate (2) in a front-to-back symmetrical manner; each of the two fourth electric slide rails (501) is slidably connected to a fourth electric slider (502); the two fourth electric sliders (502) are fixedly connected to a fifth connecting plate (503); the fifth connecting plate (503) is fixedly connected to a toggle component that is the same number as the first limit wheel (3012) and is equidistant from front to back.

7. A new energy vehicle connection cable testing device according to claim 6, characterized in that: Each actuating component includes a motor (504); a fifth connecting plate (503) is fixedly connected to the motor (504); the output shaft of the motor (504) is fixedly connected to a first spur gear (505); an L-shaped plate (506) is fixedly connected to the fifth connecting plate (503), the L-shaped plate (506) being located in front of the motor (504); a fourth electric push rod (507) is fixedly connected to the L-shaped plate (506), the fourth electric push rod (507) passing through the fifth connecting plate (503); the fourth electric push rod (507) The telescopic part is equipped with a second electric clamp (508); a fifth connecting plate (503) is rotatably connected to a bushing (509); a second spur gear (5010) is fixedly connected to the upper part of the bushing (509), and the second spur gear (5010) meshes with the first spur gear (505); a number of sixth connecting plates (5011) are fixedly connected to the bushing (509) in an equidistant arrangement; the number of sixth connecting plates (5011) are jointly fixedly connected to two fifth electric push rods (5012) that are symmetrical front and rear; two Each of the telescopic parts of the fifth electric push rod (5012) is fixedly connected to a connecting plate (5013); each of the two connecting plates (5013) is fixedly connected to a second connecting rod (5014), and the upper part of the outer ring surface of the second connecting rod (5014) is provided with four annularly arranged sliding grooves; the two second connecting rods (5014) are respectively slidably connected to a third limiting block (5015); the lower sides of the two second connecting rods (5014) are respectively fixedly connected to a fourth limiting block (5017); the two second connecting rods... Each of the connecting rods (5014) has multiple first detection heads (5018) fixedly connected to its lower part in a ring-shaped equidistant distribution; each of the two second connecting rods (5014) has multiple fifth elastic elements (5019) fixedly connected to its sliding groove in a ring-shaped equidistant distribution; each of the two second connecting rods (5014) has two second detection heads (5020) slidably connected to its upper part in a ring-shaped equidistant distribution, the same number as the fifth elastic elements (5019), and the second detection heads (5020) are fixedly connected to the fifth elastic elements (5019).

8. A new energy vehicle connection cable testing device according to claim 7, characterized in that: It also includes a sixth elastic element (5016), and a sixth elastic element (5016) is fixedly connected to the upper side of each third limiting block (5015). The sixth elastic element (5016) is located on the outer ring surface of the second connecting rod (5014), and the sixth elastic element (5016) is fixedly connected to the connecting plate (5013).

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