A testing device for a high-power charging cable of a direct-current charging pile

Abstract

This invention discloses a testing device for high-power charging cables used in DC charging piles, belonging to the technical field of cable testing equipment. It aims to solve the technical problems of traditional cable testing devices, which rely on manual cable fixing during testing, resulting in low efficiency and unstable power supply. Furthermore, traditional devices have low safety during compression testing and are easily affected by environmental factors, leading to inaccurate results in cable heat dissipation testing. This invention includes both the testing mechanism and auxiliary mechanisms. The invention automatically clamps both ends of the cable through a cover flipping step. Compared to existing technologies, this reduces manual operation, improves testing efficiency, reduces errors and instabilities caused by manual operation, and makes the testing process more standardized and regulated. Moreover, it provides corresponding protection when testing defective cables, preventing the compression components from rapidly overheating and being damaged due to rapid contact with broken cables.

Description

Technical Field

[0001] This invention relates to the field of cable testing equipment technology, and more specifically, to a testing device for high-power charging cables used in DC charging piles. Background Technology

[0002] With the rapid development of new energy electric vehicles, DC charging piles are an important charging infrastructure, and their performance and reliability are of paramount importance. As a core component of DC charging piles, the quality of high-power charging cables directly affects the charging efficiency and safety. Therefore, comprehensive and accurate testing of high-power charging cables is a key step in ensuring the normal operation of charging piles.

[0003] Existing testing devices for high-power charging cables in DC charging piles have certain limitations. Regarding cable fixing, traditional devices rely heavily on manual operation, which is not only inefficient but also makes it difficult to precisely control the clamping force. This results in poor power-on stability after clamping, easily leading to problems such as poor contact and current fluctuations, affecting the accuracy of test results. For cable compression testing, existing devices typically require additional steps and equipment, increasing the complexity and cost of the test. Furthermore, if the cable breaks during compression testing, the compression structure will instantly heat up due to rapid contact with the broken cable. Lacking an effective protection mechanism, the compression structure is easily damaged, affecting the lifespan of the device and subsequent testing. In addition, for heat dissipation testing, existing devices struggle to create a relatively independent and stable testing environment. External factors can easily interfere with temperature detection, leading to inaccurate heat dissipation test results that fail to truly reflect the cable's heat dissipation performance in actual use.

[0004] In view of this, we propose a testing device for high-power charging cables used in DC charging piles. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for high-power charging cables used in DC charging piles, in order to solve the technical problems of traditional cable testing devices, which require manual fixing of the cable during testing, resulting in low efficiency and unstable power supply, low safety during compression testing, and inaccurate results due to the susceptibility of cable heat dissipation testing to environmental influences.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a testing device for a high-power charging cable for a DC charging pile, comprising a testing mechanism and an auxiliary mechanism, wherein the upper part of the testing mechanism is connected to the auxiliary mechanism; The testing mechanism includes a platform assembly, two detectors disposed above the platform assembly, two connectors disposed on one side of the two detectors, four side plates, a testing table, two pressure components, and four clamping components, wherein the four side plates are respectively connected to the four clamping components, the two pressure components are respectively connected to the four clamping components, and the testing table is located above the platform assembly; The auxiliary mechanism includes a sealing assembly, several movable components located within the sealing assembly, several flow components located outside the movable components, a connecting sleeve connected to the movable components, and a pressing block, wherein the pressing block is connected to the movable components through the connecting sleeve.

[0007] This invention automatically clamps both ends of the cable through a cover flipping step. Compared with the prior art, it reduces manual operation, improves testing efficiency, reduces errors and instabilities caused by manual operation, and makes the testing process more standardized and regulated. In addition, it can provide corresponding protection for the device when testing defective cables, so that when the extrusion block extrudes the cable surface, the liquid in the sliding sleeve directly covers the surface of the sliding rod, which can prevent the extrusion component from being damaged by rapid heat due to rapid contact with the broken cable.

[0008] Preferably, the upper part of the platform assembly is fixedly connected to two detectors, the detection ends of the two detectors face each other and are arranged symmetrically, the two detectors are respectively fixedly connected to two connectors, the upper part of the platform assembly is fixedly connected to four side plates, the four side plates are respectively connected to four clamping assemblies, the lower part of the platform assembly is fixedly connected to two pressure assemblies, the four clamping assemblies are respectively connected to the two pressure assemblies, and there are several detection platforms, all of which are arranged on the upper part of the platform assembly.

[0009] Preferably, the inner wall of the sealing component is fixedly connected to several movable components, and the outer sides of the several movable components are respectively connected to several flow components. The bottom end of the movable component is fixedly connected to a connecting sleeve, and a squeezing block is snapped into the connecting sleeve. The several squeezing blocks are all designed with different shapes. The sealing assembly is snapped onto the top of the platform assembly, and several extrusion blocks are snapped into several testing stations respectively.

[0010] Preferably, the platform assembly includes a base, with two through holes on the top of the base, and a control panel is provided on the front of the base; The base is fixedly connected to two detectors and four side plates on its upper part.

[0011] Preferably, the pressure assembly includes a sealing sleeve, and a compression rod is slidably connected inside the sealing sleeve. Both the sealing sleeve and the compression rod are arc-shaped. One end of the sealing sleeve is connected to a conduit, and the other end of the conduit is connected to a branch pipe. The branch pipe is connected to two clamping assemblies on one side, and the sealing sleeve is fixedly connected inside the base.

[0012] Preferably, the clamping assembly includes a contact plate, one side of which is fixedly connected to a pressing plate, one side of which is fixedly connected to a reinforcing rib, the other side of which is fixedly connected to a telescopic sleeve, a No. 1 spring is sleeved on the telescopic sleeve, and a connecting plate is fixedly connected to the lower part of the pressing plate. The extrusion plate adopts an irregular symmetrical design, the contact plate overlaps the outside of the connector, the other end of the telescopic sleeve and the No. 1 spring are both fixedly connected to the side plate, and the telescopic sleeve is connected to the branch pipe.

[0013] Preferably, the sealing assembly includes a sealing cover, a rotating shaft is fixedly connected to one side of the sealing cover, bearings are sleeved at both ends of the rotating shaft, and adjusting cylinders are fixedly connected to both sides of the sealing cover. The bearing is snapped onto the top of the base, and the other end of the adjusting cylinder is fixedly connected to the top of the base.

[0014] Preferably, the movable component includes a sliding sleeve, a sliding rod is slidably connected inside the sliding sleeve, a piston plate is fixedly connected to the top end of the sliding rod, the size of the piston plate is adapted to the size of the inner wall of the sliding sleeve, a plurality of heat dissipation fins are provided above the piston plate, a second spring is provided below the piston plate, and the bottom end of the second spring is fixedly connected to the bottom of the inner wall of the sliding sleeve.

[0015] Preferably, a plurality of isolation sleeves are fixedly connected to the lower part of the sliding sleeve, an installation sleeve is fixedly connected to the outside of the sliding rod, a plurality of heat dissipation rods are fixedly connected to the upper part of the installation sleeve, the plurality of heat dissipation rods are slidably connected to the plurality of isolation sleeves respectively, and the top end of the heat dissipation rod is fixedly connected to the lower part of the piston plate. The upper part of the sliding sleeve is fixedly connected to the upper part of the inner wall of the sealing cover, and the lower end of the sliding rod is fixedly connected to the connecting sleeve.

[0016] Preferably, the flow assembly includes a guide tube, which is connected to two elbows located below. There are four elbows, and the two elbows located on one side are connected by a telescopic tube. The guide tube is fixedly connected to the outside of the slide rod, and the two elbows located above are connected to the sliding sleeve, which contains heat-absorbing liquid.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the design of clamping, pressure, and sealing components, uses a rotating shaft to flip the sealing cover downwards until it fits against the base. During this process, the sealing cover squeezes the squeezing rod, causing the squeezing rod to slide into the sealing sleeve. At this time, the gas inside the sealing sleeve is squeezed by the squeezing rod and injected into the four telescopic sleeves along the conduit and branch pipe, causing the four telescopic sleeves to extend synchronously and push the squeezing plate and contact plate to slide towards each other. As the sealing cover is fully engaged above the base, the two squeezing plates on one side move towards each other under the squeezing of the telescopic sleeves and clamp the wire cores at both ends of the cable. Since the contact plate is always in contact with the connector, it ensures that the device can always input current into the cable through the connector and complete the test during testing. This device automatically clamps both ends of the cable through the cover flipping step. Compared with the prior art, it reduces manual operation, improves testing efficiency, reduces errors and instabilities caused by manual operation, and makes the testing process more standardized and regulated.

[0018] 2. This invention also incorporates movable and flow components. During the flipping of the sealing cover, the squeezing block inside the cover simultaneously enters the testing platform. The force exerted by the adjusting cylinder to flip the sealing cover impacts the cable surface. As the squeezing block impacts the cable, it pushes the sliding rod and piston plate upwards. During this upward movement, the piston plate compresses the heat-absorbing liquid within the sealing cavity. Under pressure, the heat-absorbing liquid flows along the bend and telescopic tube into the guide tube. In subsequent testing, if localized damage or insulation failure occurs on the cable surface, rapid current leakage will cause a localized temperature rise. The heat-absorbing liquid will then quickly absorb the heat from the sliding rod. If the cable surface is not damaged, it will only buffer and absorb energy when the extrusion block impacts the cable, thereby achieving dynamic thermal response monitoring of the cable insulation integrity. When inspecting defective cables, it can provide corresponding protection for the device, so that when the extrusion block extrudes the cable surface, the liquid in the sliding sleeve directly covers the sliding rod surface, which can prevent the extrusion component from being damaged by rapid heating due to rapid contact with the broken cable. It effectively solves the problem that the extrusion component may be damaged by instantaneous high temperature due to cable breakage, reduces the problem of the device's service life and subsequent testing being affected by damage, and further ensures the service life of the device.

[0019] 3. The present invention also ensures the stability of power supply after clamping by designing the clamping component and improving the shape of the clamping plate. In contrast, the prior art may have problems such as poor contact between the cable and the clamping device due to unreasonable clamping end shape, resulting in unstable current and uneven heating during power supply, which affects the accuracy of test results. This device can effectively avoid these problems and provide a reliable guarantee for subsequent accurate testing. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the testing mechanism structure of the present invention; Figure 3 This is a schematic diagram of the platform assembly structure of the present invention; Figure 4 This is a schematic cross-sectional view of the platform assembly of the present invention; Figure 5 This is a schematic diagram of the pressure component structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A; Figure 7 This is a schematic diagram of the sealing assembly structure of the present invention; Figure 8 This is a schematic cross-sectional view of the active component of the present invention.

[0021] Explanation of the labels in the diagram: 1. Testing organization; 2. Auxiliary organization; 11. Stage assembly; 12. Detector; 13. Connector; 14. Side plate; 15. Pressure assembly; 16. Clamping assembly; 17. Detection stage; 21. Sealing assembly; 22. Moving assembly; 23. Flow assembly; 24. Connecting sleeve; 25. Extrusion block; 111. Base; 112. Through hole; 113. Control panel; 151. Sealing sleeve; 152. Compression rod; 153. Conduit; 154. Branch pipe; 161. Contact plate; 162. Extrusion plate; 163. Reinforcing rib; 164. Telescopic sleeve; 165. No. 1 spring; 166. Connecting plate; 211. Sealing cover; 212. Rotating shaft; 213. Bearing; 214. Adjusting cylinder; 221. Sliding sleeve; 222. Sliding rod; 223. Piston plate; 224. Heat sink; 225. No. 2 spring; 226. Mounting sleeve; 227. Heat sink rod; 228. Isolation sleeve; 231. Flow guide tube; 232. Telescopic pipe; 233. Elbow. Detailed Implementation

[0022] like Figures 1 to 8 As shown, the present invention relates to a testing device for a high-power charging cable for a DC charging pile, comprising a testing mechanism 1 and an auxiliary mechanism 2, wherein the upper part of the testing mechanism 1 is connected to the auxiliary mechanism 2. The testing mechanism 1 includes a platform assembly 11, two detectors 12 positioned above the platform assembly 11, two connectors 13 positioned on one side of the two detectors 12, four side plates 14, a testing table 17, two pressure components 15, and four clamping components 16. The four side plates 14 are connected to the four clamping components 16, and the two pressure components 15 are connected to the four clamping components 16. The testing table 17 is located above the platform assembly 11. The auxiliary mechanism 2 includes a sealing assembly 21, several movable components 22 located within the sealing assembly 21, several flow components 23 located outside the movable components 22, a connecting sleeve 24 connected to the movable components 22, and a pressing block 25. The pressing block 25 is connected to the movable components 22 via the connecting sleeve 24. By designing the clamping components 16, pressure components 15, and sealing assembly 21, the sealing cover 211 is flipped via a rotating shaft 212, causing the cover to flip downwards around the rotating shaft 212 until it fits against the base 111. During this process, the sealing cover 211 flips... During the process, the squeezing rod 152 is squeezed, causing it to slide into the sealing sleeve 151. At this time, the gas inside the sealing sleeve 151 is squeezed by the squeezing rod 152 and injected into the four telescopic sleeves 164 along the conduit 153 and the branch pipe 154, causing the four telescopic sleeves 164 to extend synchronously and push the squeezing plate 162 and the contact plate 161 to slide towards each other. As the sealing cover 211 is fully fastened above the base 111, the two squeezing plates 162 on one side will move towards each other under the squeezing of the telescopic sleeves 164 and clamp the wire cores at both ends of the cable. Since the contact plate 161 is always in contact with the connector 13, it is ensured that the device can always input current into the cable through the connector 13 and complete the test during the test. The device automatically completes the clamping of both ends of the cable through the cover flipping step. Compared with the existing technology, it reduces the manual operation links, improves the test efficiency, reduces the error and instability caused by manual operation, and makes the test process more standardized and regulated.

[0023] In an embodiment of the present invention, the upper part of the platform assembly 11 is fixedly connected to two detectors 12, the detection ends of the two detectors 12 facing each other and arranged symmetrically. The two detectors 12 are respectively fixedly connected to two connectors 13. The upper part of the platform assembly 11 is fixedly connected to four side plates 14, which are respectively connected to four clamping assemblies 16. The lower part of the platform assembly 11 is fixedly connected to two pressure assemblies 15, and the four clamping assemblies 16 are respectively connected to the two pressure assemblies 15. There are several detection platforms 17, all of which are arranged above the platform assembly 11. A sealing assembly... The inner wall of the sealing assembly 21 is fixedly connected to several movable components 22. The movable components 22 are respectively connected to several flow components 23. A connecting sleeve 24 is fixedly connected to the bottom of each movable component 22, and a pressing block 25 is snapped into the connecting sleeve 24. Each pressing block 25 has a different shape design. The sealing assembly 21 is snapped onto the top of the platform assembly 11, and the pressing blocks 25 are snapped into several testing platforms 17. Through the design of the movable components 22 and flow components 23, during the flipping of the sealing cover 211, the pressing blocks 25 inside the sealing cover 211 will also simultaneously enter the testing platform 17. The force of the adjusting cylinder 214 pushing the sealing cover 211 to flip causes an impact on the cable surface. As the squeezing block 25 impacts the cable, it pushes the slide rod 222 and piston plate 223 upwards. During the upward movement of the piston plate 223, the heat-absorbing liquid in the sealing cavity is compressed, causing it to enter the guide tube 231 along the elbow 233 and telescopic pipe 232 under pressure. In subsequent tests, if the cable surface experiences localized damage or insulation failure, rapid current leakage will lead to localized temperature rise, and the heat-absorbing liquid will quickly absorb the heat from the slide rod 222. If the cable surface is not damaged, only... When the extrusion block 25 impacts the cable, it acts as a buffer to absorb energy, thereby enabling dynamic thermal response monitoring of the cable insulation integrity. When inspecting defective cables, it provides corresponding protection for the device. When the extrusion block 25 extrudes the cable surface, the liquid in the sliding sleeve 221 directly covers the surface of the sliding rod 222, which can prevent the extrusion component from being damaged by rapid heating due to rapid contact with the broken cable. This effectively solves the problem that the extrusion component may be damaged by instantaneous high temperature due to cable breakage, reduces the problem of the device's service life and subsequent testing being affected by damage, and further ensures the service life of the device.

[0024] In an embodiment of the present invention, the platform assembly 11 includes a base 111, with two through holes 112 on the top of the base 111. A control panel 113 is provided on the front of the base 111. Two detectors 12 and four side plates 14 are fixedly connected to the top of the base 111. The pressure assembly 15 includes a sealing sleeve 151, with a compression rod 152 slidably connected inside the sealing sleeve 151. Both the sealing sleeve 151 and the compression rod 152 are arc-shaped. One end of the sealing sleeve 151 is connected to a conduit 153, and the other end of the conduit 153 is connected to a branch pipe 154. The connector 154 is connected to two clamping assemblies 16 on one side, and the sealing sleeve 151 is fixedly connected inside the base 111. By designing the clamping assembly 16 and improving the shape of the clamping plate, the stability of power supply after clamping is ensured. Compared with the prior art, which may have problems such as poor contact between the cable and the clamping device due to unreasonable clamping end shape, resulting in unstable current and uneven heating during power supply, affecting the accuracy of test results, this device can effectively avoid these problems and provide a reliable guarantee for subsequent accurate testing.

[0025] In another embodiment of the present invention, the clamping assembly 16 includes a contact plate 161, one side of which is fixedly connected to a pressing plate 162. A reinforcing rib 163 is fixedly connected to one side of the pressing plate 162, and a telescopic sleeve 164 is fixedly connected to the other side of the reinforcing rib 163. A first spring 165 is sleeved on the telescopic sleeve 164. A connecting plate 166 is fixedly connected to the lower part of the pressing plate 162. The pressing plate 162 adopts an irregular symmetrical design. The contact plate 161 overlaps the connector 13. The other ends of the telescopic sleeve 164 and the first spring 165 are both fixedly connected to the side plate 14. The telescopic sleeve 164 is connected to the branch pipe 154. The sealing assembly 21 includes a sealing cap 21. 1. A rotating shaft 212 is fixedly connected to one side of the sealing cover 211. Bearings 213 are sleeved at both ends of the rotating shaft 212. Adjusting cylinders 214 are fixedly connected to both sides of the sealing cover 211. The bearings 213 are snapped onto the top of the base 111. The other end of the adjusting cylinder 214 is fixedly connected to the top of the base 111. This device not only has the function of compressing the cable, but also can perform heat dissipation detection, realizing comprehensive testing of multiple performances of the cable. Compared with the existing technology, which may only focus on single performance testing, the improved device can more comprehensively evaluate the quality and performance of the cable, provide users with more detailed cable performance information, and help improve product quality and ensure safe use.

[0026] In another embodiment of the present invention, the movable component 22 includes a sliding sleeve 221, a sliding rod 222 slidably connected inside the sliding sleeve 221, a piston plate 223 fixedly connected to the top end of the sliding rod 222, the size of the piston plate 223 being adapted to the size of the inner wall of the sliding sleeve 221, a plurality of heat sinks 224 being arranged above the piston plate 223, a second spring 225 being arranged below the piston plate 223, the bottom end of the second spring 225 being fixedly connected to the bottom of the inner wall of the sliding sleeve 221, a plurality of isolation sleeves 228 being fixedly connected to the bottom of the sliding sleeve 221, an mounting sleeve 226 being fixedly connected to the outside of the sliding rod 222, a plurality of heat sinks 227 being fixedly connected above the mounting sleeve 226, the plurality of heat sinks 227 being slidably connected to the plurality of isolation sleeves 228 respectively, and the top end of the heat sink 227 being connected to the piston. The lower part of the plate 223 is fixedly connected, the upper part of the sliding sleeve 221 is fixedly connected to the upper part of the inner wall of the sealing cover 211, the bottom end of the sliding rod 222 is fixedly connected to the connecting sleeve 24, the flow assembly 23 includes a guide tube 231, the guide tube 231 is connected to two elbows 233 located below, there are four elbows 233, the two elbows 233 located on one side are connected through a telescopic tube 232, the guide tube 231 is fixedly connected to the outside of the sliding rod 222, the two elbows 233 located above are both connected to the sliding sleeve 221, the sliding sleeve 221 is filled with heat-absorbing liquid, while the cover is flipped, the extrusion block 25 inside the cover is extruded on the surface of the cable, completing the preliminary extrusion test, so that the device shortens the test steps during the cover flipping process, simplifies the test process, and saves test time and equipment costs.

[0027] Working principle: This embodiment provides a testing device for high-power charging cables for DC charging piles. When in use, the cable with adjustable length is placed above the base 111, ensuring that the cable is located within multiple testing stations 17. Based on the position of the two extrusion plates 162, the two ends of the cable are horizontally aligned with the extrusion plates 162 and are in a state of exposed wire core. During testing, the sealing cover 211 is flipped by the rotating shaft 212, causing the cover to flip downwards around the rotating shaft 212 until it fits against the base 111. During this process, the sealing cover 211 squeezes the squeezing rod 152 during the flipping process, causing the squeezing rod 152 to slide into the sealing sleeve 151. At this time, the gas in the sealing sleeve 151 is squeezed by the squeezing rod 152 and injected into the four telescopic sleeves 164 along the conduit 153 and the branch pipe 154 respectively, causing the four telescopic sleeves 164 to extend synchronously and push the squeezing plate 162 and the contact plate 161 to slide towards each other. As the sealing cover 211 is fully fastened above the base 111, the two squeezing plates 162 on one side will move towards each other under the squeezing of the telescopic sleeves 164 and clamp the wire cores at both ends of the cable. Since the contact plate 161 is always in contact with the connector 13, it is ensured that the device can always input current to the cable through the connector 13 and complete the test during the test. During the flipping of the sealing cover 211, the squeezing block 25 inside the sealing cover 211 will also enter the testing platform 17 simultaneously. According to the force of the adjusting cylinder 214 pushing the sealing cover 211 to flip, it will impact the surface of the cable. As the squeezing block 25 impacts the cable, it will push the slide rod 222 and piston plate 223 upward. During the upward movement of the piston plate 223, the heat-absorbing liquid in the sealing cavity will be compressed. Under the action of pressure, the heat-absorbing liquid will enter the guide tube 231 along the elbow 233 and the telescopic tube 232. In subsequent tests, if there is local damage to the cable surface or the insulation layer fails, the current will leak rapidly and cause local temperature rise. The heat-absorbing liquid will quickly absorb the heat of the slide rod 222. If there is no damage to the cable surface, it will only play a buffering and energy-absorbing effect when the squeezing block 25 impacts the cable, thereby realizing dynamic thermal response monitoring of the integrity of the cable insulation layer. After the anti-collision performance test of the cable is completed, it needs to be powered on for testing. If the cable is not damaged during the power-on test, the temperature inside the sealing cover 211 needs to be detected. The temperature rise curve of the heat-absorbing liquid in the sealed cavity is collected in real time by the internally designed temperature sensor, thereby detecting the heat dissipation effect of the cable.

[0028] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A testing device for a high-power charging cable for a direct current charging station, characterized in that It includes a testing mechanism (1) and an auxiliary mechanism (2), with the upper part of the testing mechanism (1) connected to the auxiliary mechanism (2); The testing mechanism (1) includes a platform assembly (11), two detectors (12) disposed above the platform assembly (11), two connectors (13) disposed on one side of the two detectors (12), four side plates (14), a testing table (17), two pressure components (15) and four clamping components (16), wherein the four side plates (14) are respectively connected to the four clamping components (16), the two pressure components (15) are respectively connected to the four clamping components (16), and the testing table (17) is located above the platform assembly (11); The auxiliary mechanism (2) includes a sealing assembly (21), a plurality of movable components (22) located within the sealing assembly (21), a plurality of flow components (23) located outside the movable components (22), a connecting sleeve (24) connected to the movable components (22), and a pressing block (25), wherein the pressing block (25) is connected to the movable components (22) through the connecting sleeve (24).

2. The testing device of the high-power charging cable for direct current charging pile according to claim 1, characterized in that, The upper part of the platform assembly (11) is fixedly connected to two detectors (12), and the two detectors (12) are fixedly connected to two connectors (13) respectively. The upper part of the platform assembly (11) is fixedly connected to four side plates (14), and the four side plates (14) are connected to four clamping assemblies (16) respectively. The lower part of the platform assembly (11) is fixedly connected to two pressure assemblies (15), and the four clamping assemblies (16) are connected to the two pressure assemblies (15) respectively. There are several detection stations (17), and the several detection stations (17) are all arranged above the platform assembly (11).

3. The testing device of the high-power charging cable for direct current charging pile according to claim 2, characterized in that, The inner wall of the sealing component (21) is fixedly connected to several movable components (22), and the outer sides of several movable components (22) are respectively connected to several flow components (23). The bottom end of the movable component (22) is fixedly connected to a connecting sleeve (24), and a squeezing block (25) is snapped into the connecting sleeve (24). The sealing component (21) is snapped onto the top of the platform component (11), and several extrusion blocks (25) are snapped into several testing platforms (17).

4. The testing device for high-power charging cables for DC charging piles according to claim 3, characterized in that, The platform assembly (11) includes a base (111), with two through holes (112) on the top of the base (111) and a control panel (113) on the front of the base (111); the top of the base (111) is fixedly connected to two detectors (12) and four side plates (14).

5. The testing device for high-power charging cables for DC charging piles according to claim 4, characterized in that, The pressure assembly (15) includes a sealing sleeve (151), and a squeezing rod (152) is slidably connected inside the sealing sleeve (151). Both the sealing sleeve (151) and the squeezing rod (152) are arc-shaped. One end of the sealing sleeve (151) is connected to the conduit (153), and the other end of the conduit (153) is connected to the branch pipe (154). The branch pipe (154) is connected to two clamping assemblies (16) on one side. The sealing sleeve (151) is fixedly connected inside the base (111).

6. The testing device for high-power charging cables for DC charging piles according to claim 5, characterized in that, The clamping assembly (16) includes a contact plate (161), one side of which is fixedly connected to a pressing plate (162). A reinforcing rib (163) is fixedly connected to one side of the pressing plate (162), and a telescopic sleeve (164) is fixedly connected to the other side of the reinforcing rib (163). A first spring (165) is sleeved on the telescopic sleeve (164), and a connecting plate (166) is fixedly connected to the lower part of the pressing plate (162). The contact plate (161) overlaps the connector (13), and the other ends of the telescopic sleeve (164) and the first spring (165) are fixedly connected to the side plate (14). The telescopic sleeve (164) is connected to the branch pipe (154).

7. The testing device for high-power charging cables for DC charging piles according to claim 6, characterized in that, The sealing assembly (21) includes a sealing cover (211), a rotating shaft (212) is fixedly connected to one side of the sealing cover (211), bearings (213) are sleeved at both ends of the rotating shaft (212), and adjusting cylinders (214) are fixedly connected to both sides of the sealing cover (211). The bearing (213) is snapped onto the top of the base (111), and the other end of the adjusting cylinder (214) is fixedly connected to the top of the base (111).

8. The testing device for high-power charging cables for DC charging piles according to claim 7, characterized in that, The movable component (22) includes a sliding sleeve (221), a sliding rod (222) is slidably connected inside the sliding sleeve (221), a piston plate (223) is fixedly connected to the top end of the sliding rod (222), a plurality of heat sinks (224) are provided above the piston plate (223), and a second spring (225) is provided below the piston plate (223). The bottom end of the second spring (225) is fixedly connected to the bottom of the inner wall of the sliding sleeve (221).

9. The testing device for high-power charging cables for DC charging piles according to claim 8, characterized in that, A plurality of isolation sleeves (228) are fixedly connected to the lower part of the sliding sleeve (221), an installation sleeve (226) is fixedly connected to the outside of the sliding rod (222), a plurality of heat dissipation rods (227) are fixedly connected to the upper part of the installation sleeve (226), the plurality of heat dissipation rods (227) are slidably connected to the plurality of isolation sleeves (228), and the top end of the heat dissipation rods (227) is fixedly connected to the lower part of the piston plate (223); The upper part of the sliding sleeve (221) is fixedly connected to the upper part of the inner wall of the sealing cover (211), and the lower end of the sliding rod (222) is fixedly connected to the connecting sleeve (24).

10. The testing device for high-power charging cables for DC charging piles according to claim 9, characterized in that, The flow assembly (23) includes a flow guide tube (231), which is connected to two elbows (233) located below. There are four elbows (233), and the two elbows (233) located on one side are connected by a telescopic tube (232). The guide tube (231) is fixedly connected to the outside of the slide rod (222), and the two elbows (233) located above are connected to the slide sleeve (221). The slide sleeve (221) is filled with heat-absorbing liquid.

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