A load testing mechanism for a direct current charging pile

Abstract

This invention discloses a load testing mechanism for DC charging piles, relating to charging pile load testing technology. It includes a testing body and an operation panel on the front of the testing body, with a heat dissipation panel on the back. The testing body has insertion mechanisms on both its internal left and right sides, each including an insertion slot. A pull-out ring is provided on the outer side of the insertion slot. Support mechanisms are provided on both the external left and right sides of the testing body, each including a support arc plate. This load testing mechanism for DC charging piles connects to the charging gun of the charging pile via the testing body. The rotatable support arc plate inside the support side plate supports the charging gun. During load testing, the high temperature is de-energized by an electromagnetic ring, causing the charging gun to disengage from the insertion slot, thus preventing short-circuit damage to components due to high temperature.

Description

Technical Field

[0001] This invention relates to the field of charging pile load testing technology, specifically to a load testing mechanism for DC charging piles. Background Technology

[0002] A DC charging pile is a fast charging device that provides DC power to electric vehicles. It can directly convert AC power from the power grid into DC power and input it into the vehicle battery, eliminating the conversion step of the on-board charger and achieving efficient and rapid energy replenishment. Load testing of DC charging piles refers to the process of using professional equipment (such as DC electronic loads) to simulate the charging process of a real electric vehicle before the charging pile leaves the factory or is put into operation, and comprehensively testing the output performance of the charging pile. Load testing can effectively ensure charging safety and improve compatibility and stability.

[0003] Application CN217787337U discloses a DC charging pile test load box, including a load box body and a heat dissipation component. The front end of the load box body is symmetrically provided with mounting slots, and vertical rods are provided between the symmetrically arranged mounting slots. Door panels are rotatably connected to the symmetrically arranged mounting slots via hinges. The ends of the symmetrically arranged door panels that are close to each other are provided with slots. Gear slots are symmetrically provided in the vertical rods, and gear blocks are rotatably connected in the symmetrically arranged gear slots. The symmetrically arranged gear blocks are symmetrically engaged with racks, and the symmetrically arranged racks are movably connected to the slots. By providing an openable door panel in the mounting slot, the racks can be adjusted by rotating the gear blocks to achieve the purpose of locking the door panel, which allows for easy opening of the door panel and maintenance of the interior of the load box body. The heat dissipation component can dissipate heat from the interior of the load box body.

[0004] Application CN219122326U discloses a novel charging pile testing load device. A placement slot is provided on the worktable and on one side of the detector body. The placement slot contains a locking protrusion, and stabilizing mechanisms are provided on both sides of the placement slot, symmetrical about the placement slot. Each stabilizing mechanism includes a support column and a clamping assembly. The bottom end of the support column is fixedly installed in an installation slot on the worktable. The clamping assembly includes a telescopic head, a telescopic rod, and a fine-tuning buffer sleeve. The telescopic head is inserted through the support column, the telescopic rod is slidably installed inside the telescopic head, and the fine-tuning buffer sleeve is threaded to the end of the telescopic rod furthest from the telescopic head. The design of the telescopic rod and fine-tuning buffer sleeve, among other key components, improves the stability of the charging pile during testing and also enhances the convenience of stabilization operations.

[0005] However, the load detection device for charging piles disclosed above still has the following problems in actual use: the detection operation is achieved by connecting the load detection device to the charging pile, but when the charging pile and the charging gun are connected to the inside of the load detection device, the load current is affected by the connection stability. It is easy to cause incomplete contact of the transmission current due to the torque and weight of the charging gun itself. At the same time, the high temperature in different test environments will also affect the upper limit of the load, making it difficult to disconnect the connection at the first time when the temperature is high.

[0006] Therefore, we propose a load testing mechanism for DC charging piles to address the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a load testing mechanism for DC charging piles. This addresses the problem that existing testing methods connect the charging pile to the load testing device, but when the charging pile and charging gun are connected to the inside of the load testing device, the load current is affected by the connection stability. This can easily lead to incomplete current transmission due to the torque and weight of the charging gun itself. In addition, high temperatures under different testing environments can also affect the upper limit of the load, making it difficult to disconnect the connection immediately when the temperature is high.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a load testing mechanism for a DC charging pile, comprising a testing body and an operation panel disposed on the front of the testing body, and a heat dissipation panel disposed on the back of the testing body, for expelling internal high temperature to the outside during load testing of the testing body and the charging pile to achieve heat exchange. The test body has a plug-in mechanism on both the left and right sides inside, and the plug-in mechanism includes a plug-in slot for plugging into the charging gun to achieve current load transmission. Among them, a pull-out ring is provided on the outside of the plug slot, and the pull-out ring is attached to the plug end face of the charging gun to achieve overheat separation. Support mechanisms are provided on both the left and right sides of the external exterior of the test body. Each support mechanism includes a support arc plate, which is symmetrically attached to the front and rear sides of the charging gun to improve the stability of the load current transmission of the charging gun.

[0009] Preferably, the insertion mechanism includes insertion slots that are equidistantly located on the left and right sides of the interior of the test body, and the insertion slots and the pull-out rings are distributed in a one-to-one correspondence. The pull-out rings are slidably installed inside the electromagnetic slots, and the electromagnetic slots are equidistantly located on the left and right sides of the interior of the test body.

[0010] Preferably, the electromagnetic slots included in the plugging mechanism are opened on the outside of the plugging slots, and the electromagnetic slots and the plugging slots are distributed in a concentric structure in a one-to-one correspondence. An electromagnetic ring is fixedly installed inside the electromagnetic slot on the side close to the test body. The electromagnetic ring is powered on and off by the thermal switch of the test body, so as to slide outwards to disengage the charging gun from the plugging slot when the repulsion ring moves outwards.

[0011] Preferably, the insertion mechanism includes a guide slide rod, which is fixedly installed on the left and right sides inside the electromagnetic slot hole. The guide slide rod slides through the left and right sides inside the electromagnetic ring plate, and the outer end of the guide slide rod is connected to the electromagnetic ring plate by a guide spring, so that it is located inside the electromagnetic slot hole during normal load detection.

[0012] Preferably, the support mechanism includes a support side plate, which is fixedly installed on the left and right sides of the outside of the test body. The support side plate covers the outside of the insertion slot, and the support side plate has through slots at equal intervals inside. The through slots and the insertion slot are coaxially distributed laterally.

[0013] Preferably, the support mechanism includes a dustproof cover plate, which slides through the upper and lower sides of the through slot inside the support side plate, and the dustproof cover plate is located on the side of the support side plate closer to the test body. In the initial state, the dustproof cover plate is used to close the through slot to achieve protective operation during non-load testing.

[0014] Preferably, the support mechanism includes a drive shaft, which is rotatably mounted on the upper and lower ends of the inner side of the support side plate via a main torsion spring. The drive shaft is symmetrically distributed about the axis of the through slot. The drive shaft is fixedly mounted on the outer end of the dustproof cover. The charging gun plug-in end contacts the dustproof cover and flips it inward, causing the drive shaft to rotate and open the through slot.

[0015] Preferably, the support mechanism includes a support shaft, which is rotatably mounted on the inner side of the support side plate via a secondary torsion spring. The support shafts are symmetrically distributed in pairs on the front and rear sides of the through slot, and the ends of the support shafts on the front and rear sides are connected to the ends of the drive shaft via a bevel gear set.

[0016] Preferably, the support mechanism includes a support bracket, the outer end of which is fixedly connected to the middle of the front and rear support shafts, the inner end of which is slidably sleeved on the outer end of the support arc plate, and the outer end of the support arc plate and the support bracket are connected to each other by a contact spring. In the initial state, the inner end of the support arc plate is far away from the inner end of the support bracket.

[0017] Preferably, the support mechanism includes a support arc plate and a support bracket initially located inside the support side plate and housed by the insertion slot of the test body. The test body is connected to the charging gun, and the support arc plate and support bracket are rotated outward by the contact with the dustproof cover to provide support for the charging gun.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The load testing mechanism for DC charging piles is connected to the charging gun of the charging pile through the testing body. The rotating support arc plate inside the support side plate supports the charging gun. The high temperature during load testing is de-energized by the electromagnetic ring plate, so as to push the charging gun away from the insertion slot, thereby achieving disengagement and avoiding short circuit damage to components caused by high temperature. The specific details are as follows: 1. The charging gun of the charging pile is connected to the test body. The plug end of the charging gun abuts against the dust cover inside the support side plate, so that the dust cover rotates synchronously towards the support side plate and opens the previously blocked through slot, so that the charging gun can be connected to the plug slots on the left and right sides of the test body through the through slot.

[0019] Furthermore, the drive shaft drives the support shaft and support bracket to rotate through the bevel gear set, so that the support bracket drives the support arc plate at the end to rotate outward synchronously, and after passing through the through slot opened inside the support side plate, it corresponds to the charging gun. Then, during the charging gun insertion process, the contact spring drives the support arc plate to fit against its outer wall, thereby supporting the charging gun and improving the stability of current transmission during load testing.

[0020] 2. When the charging gun is separated from the test body and the support side plate, the dust cover is no longer in contact with the body. The main torsion spring of the drive shaft drives the dust cover to rotate inward synchronously. The bevel gear group drives the support shaft to rotate in the opposite direction, causing the support bracket and the support arc plate to rotate inward. The dust cover on the upper and lower sides rotates inward again to cover the through slot, preventing the corresponding insertion slot from being affected by dust.

[0021] 3. The charging gun's plug-in end is inserted into the corresponding plug-in slot so that the charging gun can perform current and voltage load detection on the test unit through the plug-in slot. The load current and voltage can be adjusted through the operation panel on the front of the test unit. Under different temperature environments, the heat dissipation panel exchanges heat between the inside and outside of the test unit to avoid high temperature affecting the load test of the charging pile.

[0022] Furthermore, when the load of some charging piles is abnormal, the charging gun and the plug slot may experience high temperatures due to current transmission. The testing machine monitors the temperature at the plug slot so that when the temperature is high, the electromagnetic ring inside the electromagnetic slot can be de-energized. After the electromagnetic ring is de-energized, it will no longer approach the inner wall of the testing machine and will slide outwards through the guide spring outside the guide slide rod. This allows the electromagnetic ring to contact the end of the charging gun and disengage it from the plug slot, thus preventing short circuit damage to components caused by continuous high temperatures. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the heat dissipation panel mounting structure of the present invention; Figure 3 This is a schematic diagram of the insertion slot hole structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the structure of the pull-out ring after it has slid. Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the initial state of the dustproof cover plate of the present invention; Figure 8 This is a schematic diagram of the structure of the support arc plate in its initial state according to the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C; Figure 10 This is a schematic diagram of the structure of the support arc plate after it is flipped in this invention; Figure 11 This is a three-dimensional structural diagram of the supporting arc plate and dustproof cover plate of the present invention.

[0024] In the diagram: 1. Test body; 2. Control panel; 3. Heat dissipation panel; 4. Insertion slot; 5. Retraction ring; 6. Support arc plate; 7. Electromagnetic slot; 8. Electromagnetic ring; 9. Guide slide rod; 10. Guide spring; 11. Support side plate; 12. Through slot; 13. Dustproof cover; 14. Drive shaft; 15. Main torsion spring; 16. Secondary torsion spring; 17. Bevel gear assembly; 18. Support bracket; 19. Contact spring; 20. Support shaft. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-11 The present invention provides the following technical solution: Example 1: To address the problems existing in the load testing of current charging piles, this example discloses the following technical solution: a load testing mechanism for DC charging piles, including a testing body 1 and an operation panel 2 disposed on the front of the testing body 1, and a heat dissipation panel 3 disposed on the back of the testing body 1, used to expel the internal high temperature of the testing body 1 to the outside during the load test of the charging pile; the support mechanism includes a support side plate 11, and the support side plate 11 is fixedly installed on the left and right sides of the outside of the testing body 1, and the support side plate 11 covers the outside of the insertion slot 4, and the support side plate 11 has through slots 12 evenly spaced inside, and the through slots 12 and the insertion slot 4 are distributed laterally coaxially.

[0027] The support mechanism includes a dustproof cover 13, which slides through the upper and lower sides of the through slot 12 inside the support side plate 11. The dustproof cover 13 is located on the side of the support side plate 11 closer to the test body 1. In its initial state, the dustproof cover 13 is used to close the through slot 12 to achieve protection during non-load testing. The support mechanism includes a drive shaft 14, which is rotatably mounted on the upper and lower ends of the inner side of the support side plate 11 via a main torsion spring 15. The drive shaft 14 is symmetrically distributed about the axis of the through slot 12. The drive shaft 14 is fixedly mounted on the outer end of the dustproof cover 13. The charging gun plug-in end contacts the dustproof cover 13 and flips it inward, causing the drive shaft 14 to rotate and open the through slot 12.

[0028] like Figures 7-8 , Figure 11 As shown, when it is necessary to test the load current of the charging pile, the charging gun of the charging pile is connected by inserting it into the insertion slots 4 opened on the left and right sides of the test body 1. When the charging gun is inserted, it first contacts the support side plates 11 on the left and right sides of the test body 1. The charging gun abuts against the dustproof cover 13 covering the through slot 12 inside the support side plate 11, causing the dustproof cover 13 to flip inward towards the support side plate 11. During the flipping process, the fixedly connected drive shaft 14 is rotated to open the previously blocked through slot 12, so that it can be connected to the insertion slots 4 inside the test body 1.

[0029] Example 2: In order to solve the problems existing in the load test of the existing charging pile, this example discloses the following technical solution: the support mechanism includes a support shaft 20, and the support shaft 20 is rotatably installed on the inner side of the support side plate 11 through the auxiliary torsion spring 16. The support shafts 20 are symmetrically distributed in pairs on the front and rear sides of the through slot 12, and the ends of the support shafts 20 on the front and rear sides are connected to the ends of the drive shaft 14 through the bevel gear set 17.

[0030] The support mechanism includes a support bracket 18, the outer end of which is fixedly connected to the middle of the front and rear support pivots 20, and the inner end of the support bracket 18 is slidably sleeved on the outer end of the support arc plate 6. The outer end of the support arc plate 6 and the support bracket 18 are connected to each other by a contact spring 19. In the initial state, the inner end of the support arc plate 6 is far away from the inner end of the support bracket 18. The support arc plate 6 and the support bracket 18 included in the support mechanism are initially located inside the support side plate 11 and are housed by the insertion slot 4 of the test body 1. The test body 1 is connected to the charging gun, and the contact dustproof cover 13 drives the support arc plate 6 and the support bracket 18 to flip outward to support the charging gun.

[0031] like Figures 9-10 As shown, when the dustproof covers 13 on the left and right sides of the test body 1 are flipped and stored inside the support side plate 11, they drive the drive shaft 14 fixedly connected to the outer end to rotate. At the same time, the drive shaft 14 drives the support shaft 20, which is meshed with it, to rotate through the bevel gear group 17 at the outer end. When the support shaft 20 rotates, it drives the support bracket 18 and the support arc plate 6 fixedly connected in the middle to rotate outward in sync. This allows the support bracket 18 to drive the support arc plate 6 through the through slot 12 opened inside the support side plate 11, thereby fitting the support arc plate 6 against the outer wall of the charging gun. The abutment spring 19 at the outer end of the support bracket 18 keeps the support arc plate 6 in constant contact with the outer wall of the charging gun, thus supporting the charging gun and improving the stability of current transmission during load testing.

[0032] Furthermore, when the charging gun is separated from the test body 1, the charging gun first slides outward through the through slot 12 opened inside the support side plate 11 so that the dust cover 13 on the upper and lower sides is no longer in contact. Then, the main torsion spring 15 on the outer wall of the drive shaft 14 drives it to rotate inward synchronously with the dust cover 13. At the same time, the drive shaft 14 is driven by the bevel gear group 17 to rotate the meshed support shaft 20 in the opposite direction, so that the support bracket 18 and the support arc plate 6 rotate inward synchronously. The dust cover 13 on the upper and lower sides rotates inward again to cover the through slot 12, so as to prevent the corresponding insertion slot 4 from being affected by dust.

[0033] Example 3: To address the problems existing in the load testing of current charging piles, this example discloses the following technical solution: The test body 1 has insertion mechanisms on both its left and right sides, each including a insertion slot 4 for connecting to the charging gun to transmit current load. A pull-out ring 5 is provided on the outer side of the insertion slot 4, and this ring fits against the charging gun's insertion end face to achieve overheat separation. Support mechanisms are provided on both the left and right sides of the test body 1, each including a support arc plate 6. These support arc plates 6 are symmetrically attached to the front and rear sides of the charging gun, improving the stability of the charging gun's load current transmission.

[0034] The insertion mechanism includes insertion slots 4 evenly spaced on the left and right sides of the interior of the test body 1, with each insertion slot 4 corresponding to a pull-out ring 5. The pull-out ring 5 is slidably installed inside the electromagnetic slot 7, which is also evenly spaced on the left and right sides of the interior of the test body 1. The insertion mechanism also includes electromagnetic slots 7 located outside the insertion slots 4, with each electromagnetic slot 7 corresponding to the insertion slots 4 in a concentric structure. The electromagnetic slots 7 are fixedly installed on the side of the interior of the electromagnetic slot 7 closest to the test body 1. There is an electromagnetic ring plate 8, which is controlled by a thermal switch of the test body 1 to turn on and off. It is used to slide the repulsion pull ring 5 outward to disengage the charging gun from the insertion slot 4. The insertion mechanism includes a guide slide rod 9, which is fixedly installed on the left and right sides inside the electromagnetic slot 7. The guide slide rod 9 slides through the left and right sides inside the electromagnetic ring plate 8. The outer end of the guide slide rod 9 is connected to the electromagnetic ring plate 8 by a guide spring 10, so that it is located inside the electromagnetic slot 7 during normal load testing.

[0035] like Figures 3-4 As shown, after the charging gun slides through the support side plate 11 into the interior of the test body 1, it is first supported by the symmetrically distributed support arc plates 6. At the same time, the plug end of the charging gun is plugged into the corresponding plug slot 4 so that the charging gun can perform current and voltage load detection on the test body 1 through the plug slot 4. The load current and voltage can be adjusted by the operation panel 2 on the front of the test body 1. Under different temperature environments, the heat dissipation panel 3 exchanges heat between the inside and outside of the test body 1 to avoid the high temperature affecting the load test of the charging pile.

[0036] like Figures 5-6As shown, when the load of some charging piles is abnormal, the charging gun and the plug slot 4 will have high temperature due to current transmission. The test body 1 will monitor the temperature of the plug slot 4 so that when the temperature is high, the electromagnetic ring 8 inside the electromagnetic slot 7 will be de-energized (initially, the energized electromagnetic ring 8 is located on the side close to the electromagnetic slot 7 and is in contact with the plug end of the charging gun, which does not affect the plug-in of the charging gun and the current load test). After the electromagnetic ring 8 is de-energized, it will no longer be close to the inner wall of the test body 1, and will slide outward by the guide spring 10 outside the guide slide rod 9 so that the electromagnetic ring 8 will contact the end of the charging gun and drive it to disengage from the plug slot 4, thereby achieving separation and avoiding short circuit damage to components caused by continuous high temperature.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A load testing mechanism for a DC charging pile, comprising a test body (1) and an operation panel (2) disposed on the front of the test body (1), and a heat dissipation panel (3) disposed on the back of the test body (1) for expelling the internal high temperature to the outside during load testing of the test body (1) and the charging pile; Its features are, Also includes: The test body (1) is provided with plug-in mechanisms on both the left and right sides inside, and the plug-in mechanism includes a plug-in slot (4), which is used to plug into the charging gun to realize current load transmission. Among them, a pull-out ring (5) is provided on the outside of the plug slot (4), and the pull-out ring (5) is attached to the plug end face of the charging gun to achieve overheat separation. The test body (1) is provided with support mechanisms on both the left and right sides of the exterior, and the support mechanisms include support arc plates (6). The support arc plates (6) are attached to the front and rear sides of the charging gun in a symmetrical manner to improve the stability of the load current transmission of the charging gun.

2. The load testing mechanism for a DC charging pile according to claim 1, characterized in that: The insertion mechanism includes insertion slots (4) that are equally spaced on the left and right sides of the inside of the test body (1), and the insertion slots (4) and the pull-out rings (5) are distributed in a one-to-one correspondence. The pull-out rings (5) are slidably installed inside the electromagnetic slots (7), and the electromagnetic slots (7) are equally spaced on the left and right sides of the inside of the test body (1).

3. The load testing mechanism for a DC charging pile according to claim 2, characterized in that: The electromagnetic slot (7) included in the plug-in mechanism is opened outside the plug-in slot (4), and the electromagnetic slot (7) and the plug-in slot (4) are distributed in a one-to-one correspondence with each other in a concentric structure. An electromagnetic ring (8) is fixedly installed inside the electromagnetic slot (7) on the side close to the test body (1). The electromagnetic ring (8) is powered on and off by the thermal switch of the test body (1) to slide outwards and disengage the charging gun from the plug-in slot (4).

4. The load testing mechanism for a DC charging pile according to claim 3, characterized in that: The insertion mechanism includes a guide slide rod (9), which is fixedly installed on the left and right sides inside the electromagnetic slot (7). The guide slide rod (9) slides through the left and right sides inside the electromagnetic ring plate (8). The outer end of the guide slide rod (9) is connected to the electromagnetic ring plate (8) by a guide spring (10) to be located inside the electromagnetic slot (7) during normal load detection.

5. The load testing mechanism for a DC charging pile according to claim 1, characterized in that: The support mechanism includes a support side plate (11), and the support side plate (11) is fixedly installed on the left and right sides of the outside of the test body (1). The support side plate (11) covers the outside of the insertion slot (4), and the support side plate (11) has through slots (12) evenly spaced inside. The through slots (12) and the insertion slots (4) are coaxially distributed laterally.

6. The load testing mechanism for a DC charging pile according to claim 5, characterized in that: The support mechanism includes a dustproof cover (13), which slides through the upper and lower sides of the through slot (12) inside the support side plate (11). The dustproof cover (13) is located on the side of the support side plate (11) closer to the test body (1). In the initial state, the dustproof cover (13) is used to close the through slot (12) to achieve protection during non-load testing.

7. The load testing mechanism for a DC charging pile according to claim 1, characterized in that: The support mechanism includes a drive shaft (14), which is rotatably mounted on the upper and lower ends of the inner side of the support side plate (11) via a main torsion spring (15). The drive shaft (14) is symmetrically distributed about the axis of the through slot (12). The drive shaft (14) is fixedly mounted on the outer end of the dust cover (13). The charging gun plug end touches the dust cover (13) and flips inward to drive the drive shaft (14) to rotate, thus opening the through slot (12).

8. A load testing mechanism for a DC charging pile according to claim 7, characterized in that: The support mechanism includes a support shaft (20), and the support shaft (20) is rotatably mounted on the inner side of the support side plate (11) by a secondary torsion spring (16). The support shafts (20) are symmetrically distributed in pairs on the front and rear sides of the through slot (12), and the ends of the support shafts (20) on the front and rear sides are connected to the ends of the drive shaft (14) by a bevel gear set (17).

9. A load testing mechanism for a DC charging pile according to claim 8, characterized in that: The support mechanism includes a support bracket (18), and the outer end of the support bracket (18) is fixedly connected to the middle of the front and rear support pivots (20). The inner end of the support bracket (18) is slidably sleeved on the outer end of the support arc plate (6). The outer end of the support arc plate (6) and the support bracket (18) are connected to each other by a contact spring (19). In the initial state, the inner end of the support arc plate (6) is far away from the inner end of the support bracket (18).

10. A load testing mechanism for a DC charging pile according to claim 1, characterized in that: The support mechanism includes a support arc plate (6) and a support bracket (18) which are initially located inside the support side plate (11) and are housed by the insertion slot (4) of the test body (1). The test body (1) is connected to the charging gun, and the dust cover (13) abuts against the support arc plate (6) and the support bracket (18) flip outward to support the charging gun.

Images