A short-circuit device for detecting charging voltage of electric vehicles and its usage method

Abstract

This invention relates to electric vehicle testing equipment, specifically a short-circuit device for testing the charging voltage of an electric vehicle and its usage method. The device includes a housing with a hollow interior forming a contact cavity. The housing contains a short-circuit mechanism and a testing mechanism. The short-circuit mechanism includes two spaced-apart short-circuit sections. Each short-circuit section includes a conductive rod penetrating the housing. The conductive rod is connected to the testing mechanism via a connecting part. The connecting part includes a conductive block. The conductive block is connected to the testing mechanism via a connecting wire. The testing mechanism includes a voltage measuring module. The connecting part is connected to a control mechanism for controlling the contact between the connecting part and the conductive rod. This invention discloses a short-circuit device for testing the charging voltage of an electric vehicle. The short-circuit device disclosed in this invention can detect the charging voltage of the charging circuit during electric vehicle charging.

Description

Technical Field

[0001] This invention relates to electric vehicle testing equipment, specifically a short-circuit device for testing the charging voltage of electric vehicles and its usage method. Background Technology

[0002] When an electric vehicle is being charged, the charging voltage needs to be detected to protect the vehicle's power supply.

[0003] Existing electric vehicles connect electronic testing equipment directly to the charging cable to detect the power supply voltage, keeping the electronic testing equipment continuously powered.

[0004] With the use of electric vehicles, the detection accuracy of electronic testing equipment is gradually reduced due to the influence of current, eventually causing electric vehicle malfunctions. Moreover, when the voltage is too high, even if the electronic testing equipment is turned off, the control switch may be damaged due to excessive voltage, thus causing equipment damage.

[0005] For example, patent 202021248516.5 - an online testing device for electric vehicle power battery packs.

[0006] Therefore, a new type of electric vehicle charging voltage detection device that connects to the charging circuit during detection and can be disconnected from the charging circuit when not detecting is what is needed now. Summary of the Invention

[0007] The purpose of this invention is to provide a novel electric vehicle charging voltage detection device that is connected to the charging circuit during detection and can be disconnected from the charging circuit when not detecting.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A short-circuit device for detecting charging voltage of an electric vehicle includes a housing, the interior of which is hollow to form a contact cavity;

[0010] The housing is equipped with a short-circuiting mechanism and a detection mechanism;

[0011] The shorting mechanism includes two shorting sections spaced apart;

[0012] Each of the aforementioned shorting portions includes a conductive rod disposed through the housing;

[0013] The conductive rod is connected to the detection mechanism via a connecting part; the connecting part includes a conductive block;

[0014] The conductive block is connected to the detection mechanism via connecting wires; the detection mechanism includes a voltage measuring module.

[0015] The connecting part is connected to a control mechanism for controlling the contact between the connecting part and the conductive rod.

[0016] An insulating sleeve is provided at each end of the conductive rod; the conductive rod is connected to the outer shell through the insulating sleeve.

[0017] The control mechanism includes a connecting part, the connecting part includes a connecting block, and the connecting block is connected to a driving part; the driving part drives the connecting block to control the conductive block to fit with the corresponding conductive rod.

[0018] The connecting block includes a longitudinal plate; the longitudinal plate has two parallel transverse plates spaced apart; the connecting block includes a first rotating rod and a second rotating rod, both of which are V-shaped; a conductive block is provided at one end of each of the first and second rotating rods; the ends of the first and second rotating rods away from the conductive blocks are connected by an adjusting mechanism; the adjusting mechanism includes a sliding groove on the first rotating rod, a sliding shaft on the second rotating rod, a return spring in the sliding groove, one end of the return spring being connected to the inner wall of the adjusting mechanism, and the other end being connected to the sliding shaft; the first and second rotating rods are connected to the transverse plates via a rotating part.

[0019] The driving unit includes a sliding plate, an adjusting screw connected to the sliding plate, and a rotating part connected to the adjusting screw; the sliding plate is provided with two connecting parts; each connecting part corresponds to a conductive rod.

[0020] The horizontal plate is provided with a through hole; the first rotating rod and the second rotating rod are respectively connected to the through holes of adjacent horizontal plates; the first rotating rod and the second rotating rod are both connected to the inner wall of the through hole of the adjacent horizontal plate through a rotating part.

[0021] The rotating part includes a rotating shaft; the first rotating rod and the second rotating rod are respectively connected to the inner wall of the through hole through the rotating shaft.

[0022] The sliding plate is connected to the outer shell via a guide rail mechanism; the guide rail mechanism includes a movable guide rail disposed on the inner wall of the contact cavity; the sliding plate is provided with a sliding horizontal groove; the sliding plate is connected to the movable guide rail via the sliding horizontal groove.

[0023] Each of the conductive rods is provided with an insulating mechanism, and each insulating mechanism is used in conjunction with a longitudinal block; the insulating mechanism includes an insulating rod, which is connected to the conductive rod via a bridging block.

[0024] A method of using a short-circuiting device, the method comprising the following steps:

[0025] Step 1: Connect a shorting device to the electric vehicle charging circuit;

[0026] Step 2: After Step 1 is completed, the short-circuit part is connected to the corresponding conductive rod by the control mechanism, thereby realizing the short circuit of the charging circuit. The voltage of the charging circuit is obtained by the detection mechanism.

[0027] The advantages of this invention are:

[0028] This invention discloses a shorting device for detecting the charging voltage of an electric vehicle; the shorting device disclosed in this invention can realize the detection of the charging voltage of the charging circuit during the charging of an electric vehicle. Attached Figure Description

[0029] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0030] Figure 1 This is a schematic diagram of the appearance of the present invention;

[0031] Figure 2 For the present invention Figure 1 Structural diagram;

[0032] Figure 3 For the present invention Figure 1 Schematic diagram of the inner and outer shell structure;

[0033] Figure 4 For the present invention Figure 2 Schematic diagram of the middle sliding plate;

[0034] Figure 5 For the present invention Figure 4 Schematic diagram of the middle connecting block;

[0035] In the picture:

[0036] 11. Outer shell; 12. Rotating part; 13. Conductive post; 14. Insulating sleeve; 15. Contact cavity; 16. Insulating rod; 17. Sliding plate; 18. Moving guide rail; 19. Connecting block; 20. Through hole; 21. Threaded hole; 22. Adjusting screw; 23. Conductive block; 24. First rotating rod; 25. Connecting wire; 26. Voltage measuring module; 27. Sliding groove; 28. Sliding shaft; 29. ​​Second rotating rod; 30. Return spring. Detailed Implementation

[0037] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0038] A short-circuit device for detecting charging voltage of an electric vehicle includes a housing 11, the interior of which is hollow to form a contact cavity 15; the housing 11 is provided with a short-circuit mechanism and a detection mechanism; this invention discloses a short-circuit device for detecting charging voltage of an electric vehicle; the short-circuit device disclosed in this invention can realize the detection of charging voltage of the charging circuit during electric vehicle charging.

[0039] The shorting device disclosed in this invention is mainly used to short-circuit the charging circuit to detect the charging voltage.

[0040] Specifically, this invention includes a housing 11, which serves as the external protective structure for the short-circuit device. The housing 11 is supported by insulating material and is connected to the vehicle body in actual implementation. The housing 11 has a hollow interior forming a contact cavity 15. The contact cavity 15 facilitates the arrangement of the subsequent short-circuit mechanism and detection mechanism. Furthermore, the housing 11 contains both a short-circuit mechanism and a detection mechanism. The short-circuit mechanism is used for subsequent short-circuiting of the charging circuit, effectively enabling subsequent detection of the charging circuit. Additionally, the detection mechanism is an external circuit structure that detects the voltage of the charging circuit during subsequent short-circuiting.

[0041] The short-circuiting mechanism described in this invention includes two spaced-apart short-circuiting sections. The arrangement of the two short-circuiting sections facilitates subsequent connection with the live and neutral wires of the charging harness, thereby achieving short-circuiting between the short-circuiting device and the charging harness, and subsequently short-circuiting of the charging circuit, enabling subsequent detection of the charging voltage.

[0042] In addition, each of the short-circuit portions in this invention includes a conductive rod that penetrates the housing 11; in actual implementation, one conductive rod is connected to the live wire and the other is connected to the neutral wire, thereby facilitating subsequent short-circuit operations.

[0043] Meanwhile, in this invention, the conductive rod is connected to the detection mechanism through a connecting part; the connecting part includes a conductive block 23; the present invention facilitates the conduction between the conductive rod and the detection mechanism by setting the conductive block 23.

[0044] Furthermore, in this invention, the conductive block 23 is connected to the detection mechanism via a connecting wire 25; the detection mechanism includes a voltage measuring module 26; the connecting wire 25 facilitates the connection between the conductive block 23 and the voltage measuring module 26.

[0045] In this invention, the connecting part is connected to a control mechanism for controlling the contact between the connecting part and the conductive rod; the setting of the control mechanism facilitates the control of the connection between the connecting part and the conductive rod, and thereby controls the connection between the short-circuiting device and the charging wire 25.

[0046] Furthermore, in this invention, an insulating sleeve 14 is provided at each end of the conductive rod; the conductive rod is connected to the outer shell 11 through the insulating sleeve 14; the insulating sleeve 14 plays a good protective role and is also equivalent to an external connector, which facilitates subsequent connection and docking with the charging voltage harness.

[0047] Furthermore, in this invention, the control mechanism includes a connecting part, which includes a connecting block 19 connected to a driving part; the driving part drives the connecting block 19 to control the conductive block 23 to fit against the corresponding conductive rod; the connecting block 19 includes a longitudinal plate 192; the longitudinal plate 192 is provided with two parallel transverse plates 191 spaced apart; the connecting block includes a first rotating rod 24 and a second rotating rod 29, both of which are V-shaped; a conductive block 2 is provided at one end of both the first rotating rod 24 and the second rotating rod 29. 3; The ends of the first rotating rod 24 and the second rotating rod 29 furthest from the conductive block 23 are connected by an adjustment mechanism; the adjustment mechanism includes a sliding groove 27 on the first rotating rod 24 and a sliding shaft 28 on the second rotating rod 29. A return spring 30 is provided in the sliding groove 27, one end of which is connected to the inner wall of the adjustment mechanism, and the other end is connected to the sliding shaft 28; the first rotating rod 24 and the second rotating rod 29 are connected to the transverse plate 191 through a rotating part 12; the driving part includes a sliding plate 17, on which an adjusting screw 22 is connected. The adjusting screw 22 is connected to a rotating part 12; the sliding plate 17 has two connecting parts; each connecting part corresponds to a conductive rod; the transverse plate 191 has a through hole 20; the first rotating rod 24 and the second rotating rod 29 are respectively connected to the through holes 20 of adjacent transverse plates 191; the first rotating rod 24 and the second rotating rod 29 are both connected to the inner wall of the through hole 20 of adjacent transverse plates 191 through the rotating part 12; the rotating part 12 includes a rotating shaft; the first rotating rod 24 and the second rotating rod 29 are respectively connected to the inner wall of the through hole 20 through the rotating shaft. The conductive rods are connected to the wall; each conductive rod is provided with an insulating mechanism, and each insulating mechanism is used in conjunction with a longitudinal block; the insulating mechanism includes an insulating rod 16, which is connected to the conductive rod through a bridging block; through the above design, in actual use, by rotating the adjusting screw 22, the sliding plate 17 moves along the axial direction of the adjusting screw 22; through the action of the insulating rod 16 and the return spring 30, the connecting block can be rotated, thereby realizing the contact and disengagement of the conductive block 23 and the conductive rod, and thus realizing the connection between the short-circuit part and the conductive rod.

[0048] Furthermore, in this invention, the sliding plate 17 is connected to the outer shell 11 via a guide rail 18 mechanism; the guide rail 18 mechanism includes a movable guide rail 18 disposed on the inner wall of the contact cavity 15; the sliding plate 17 is provided with a sliding transverse groove; the sliding plate 17 is connected to the movable guide rail 18 via the sliding transverse groove; the present invention, through the setting of the guide rail 18 mechanism, not only facilitates the arrangement of the sliding plate 17, but also plays a good limiting role, preventing the sliding plate 17 from rotating with the adjusting screw 22, and also guides the movement of the sliding plate 17 to prevent the movement of the sliding plate 17 from deviating.

[0049] A method of using a short-circuiting device, the method comprising the following steps:

[0050] Step 1: Connect a shorting device to the electric vehicle charging circuit;

[0051] Step 2: After Step 1 is completed, the short-circuit part is connected to the corresponding conductive rod by the control mechanism, thereby realizing the short circuit of the charging circuit. The voltage of the charging circuit is obtained by the detection mechanism.

[0052] Through the above operations, the present invention can realize the detection of charging circuit voltage.

[0053] specific:

[0054] The short-circuiting device disclosed in this invention includes a housing 11, and a contact cavity 15 is provided inside the housing 11. Two symmetrically positioned insulating sleeves 14 are provided through the left and right walls of the contact cavity 15, and the two insulating sleeves 14 are fixedly connected by a conductive post 13.

[0055] The left and right walls of the contact cavity 15 are both fixed with movable guide rails 18, and a sliding plate 17 is slidably connected to the movable guide rails 18. The sliding plate 17 is provided with a driving part that drives the sliding plate 17 to move. Connecting blocks 19 are fixed at both the upper and lower ends of the sliding plate 17, and a voltage measuring module 26 is fixed at the rear end of the sliding plate 17. The driving part includes a threaded hole 21 through the sliding plate 17 and a through hole 20 through the connecting block 19. A first rotating rod 24 is rotatably connected to the inner wall of the through hole 20. The 4 is provided with a sliding groove 27, and a sliding shaft 28 is slidably connected in the sliding groove 27. The sliding shaft 28 is fixedly connected to the inner wall of the sliding groove 27 by a return spring 30. A second rotating rod 29 is rotatably connected to the sliding shaft 28. Both the first rotating rod 24 and the second rotating rod 29 are fixedly provided with conductive blocks 23 that clamp the conductive post 13. The second rotating rod 29 is connected to the sliding groove 27 through the sliding shaft 28. The voltage measuring module 26 is fixedly connected to the conductive block 23 through a connecting wire 25.

[0056] When implementing and using:

[0057] The live wire and neutral wire in the charging circuit are respectively connected to a conductive post 13 of the shorting device.

[0058] When measuring voltage: The rotating part 12 drives the adjusting screw 22 to move the sliding plate 17, which in turn causes the insulating rod 16 to push the first rotating rod 24 and the second rotating rod 29 to rotate. The other ends of the first rotating rod 24 and the second rotating rod 29 drive the conductive block 23 to clamp the conductive post 13. The conductive post 13 is then connected to the voltage measuring module 26 through the connecting wire 25. The voltage between the two conductive posts 13 is detected by shorting. This increases the detection accuracy and isolates the conductive post 13 from the voltage measuring module 26, preventing excessive voltage from breaking down the control switch and damaging the voltage measuring module 26.

[0059] After the test is completed:

[0060] The rotating part 12 drives the adjusting screw 22 to move the sliding plate 17, which in turn causes the connecting block 19 to move in the opposite direction. Under the action of the reset spring 30, the first rotating rod 24 and the second rotating rod 29 rotate, thereby separating the conductive block 23 from the conductive post 13 and releasing the short circuit.

[0061] In this invention, the rotating part 12 can be a rotating handle, which drives the adjusting screw 22 to rotate, thereby enabling the normal use of the short-circuit device.

[0062] Example 1

[0063] Reference Figure 1-5 This is the first embodiment of the present invention. This embodiment provides a novel short-circuit device for measuring the charging voltage of electric vehicles, including a housing 11. The housing 11 has a contact cavity 15. Two symmetrically positioned insulating sleeves 14 are provided through the left and right walls of the contact cavity 15. The two insulating sleeves 14 are fixedly connected by conductive posts 13.

[0064] The left and right walls of the contact cavity 15 are both fixed with movable guide rails 18, and a sliding plate 17 is slidably connected to the movable guide rails 18. The sliding plate 17 is provided with a driving part that drives the sliding plate 17 to move. Connecting blocks 19 are fixed at both the upper and lower ends of the sliding plate 17. A voltage measuring module 26 is fixed at the rear end of the sliding plate 17. The control device 31 includes a threaded hole 21 that passes through the sliding plate 17. An adjusting screw 22 is provided in the threaded hole 21. The adjusting screw 22 is connected to a rotating part 12.

[0065] When not charging or when the voltage is too high, the rotating part 12 drives the adjusting screw 22 to rotate. The adjusting screw 22 drives the sliding plate 17 to move. The sliding plate 17 drives the connecting block 19 to move. The connecting block 19 drives the first rotating rod 24 and the second rotating rod 29 to move. The reset spring 30 drives the second rotating rod 29 and the first rotating rod 24 to rotate, releasing the conductive post 13. This causes the voltage measuring module 26 to move away from the conductive post 13, disconnecting the voltage detection process and protecting the equipment from damage.

[0066] Example 2

[0067] Reference Figure 1-5 This is the second embodiment of the present invention, which is based on the previous embodiment. A through hole 20 is provided through the connecting block 19. A first rotating rod 24 is rotatably connected to the inner wall of the through hole 20. A sliding groove 27 is provided on the first rotating rod 24. A sliding shaft 28 is slidably connected in the sliding groove 27. The sliding shaft 28 and the inner wall of the sliding groove 27 are fixedly connected by a return spring 30. A second rotating rod 29 is rotatably connected to the sliding shaft 28. A conductive block 23 that clamps the conductive post 13 is fixedly provided on both the first rotating rod 24 and the second rotating rod 29. The second rotating rod 29 is rotatably connected to the inner wall of the sliding groove 27. The voltage measuring module 26 and the conductive block 23 are fixedly connected by a connecting wire 25.

[0068] The upper and lower conductive posts 13 are respectively connected to the circuit. The first rotating rod 24 and the second rotating rod 29 are close to the insulating rod 16. The insulating rod 16 pushes the first rotating rod 24 and the second rotating rod 29 to rotate. The other ends of the first rotating rod 24 and the second rotating rod 29 clamp the conductive post 13. The conductive post 13 and the insulating rod 16 are then connected by the connecting wire 25 to realize the voltage detection of the conductive post 13.

[0069] To avoid interference with subsequent movement between the conductive block and adjacent components, the conductive block is required to also be a columnar structure.

[0070] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. An electric vehicle detection charging voltage shorting device, characterized by, The shell is internally hollow to form a contact cavity; The shell is internally provided with a short-circuit mechanism and a detection mechanism; The short-circuit mechanism comprises two spaced short-circuit parts; Each short-circuit part comprises a conductive rod arranged through the shell; The conductive rod is connected with the detection mechanism through a communication part, which comprises a conductive block; The conductive block is connected with the detection mechanism through a connecting wire, and the detection mechanism comprises a voltage measurement module; The communication part is connected with a control mechanism for controlling the contact between the communication part and the conductive rod; The conductive rod is provided with an insulating sleeve at each end, and the conductive rod is connected with the shell through the insulating sleeve; The control mechanism comprises a connecting part, which comprises a connecting block connected with a driving part; the driving part drives the connecting block to control the conductive block to be attached to the corresponding conductive rod; The connecting block comprises a longitudinal plate, and two spaced transverse plates are arranged on the longitudinal plate; the connecting part comprises a first rotating rod and a second rotating rod, both of which are V-shaped; a conductive block is arranged on one end of each of the first rotating rod and the second rotating rod; the ends of the first rotating rod and the second rotating rod away from the conductive block are connected through an adjusting mechanism; the adjusting mechanism comprises a sliding groove arranged on the first rotating rod and a sliding shaft arranged on the second rotating rod; a reset spring is arranged in the sliding groove, one end of the reset spring is connected with the adjusting inner wall, and the other end is connected with the sliding shaft; the first rotating rod and the second rotating rod are connected with the transverse plate through a rotating part; The driving part comprises a sliding plate, a adjusting screw rod is connected on the sliding plate, and a rotating part is connected with the adjusting screw rod; two connecting parts are arranged on the sliding plate; each connecting part corresponds to a conductive rod; A through hole is arranged on the transverse plate; the first rotating rod and the second rotating rod are connected in the through hole of the adjacent transverse plate; the first rotating rod and the second rotating rod are connected with the inner wall of the through hole of the adjacent transverse plate through the rotating part; The rotating part comprises a rotating shaft; the first rotating rod and the second rotating rod are connected with the inner wall of the through hole through the rotating shaft; The sliding plate is connected with the shell through a guide rail mechanism; the guide rail mechanism comprises a moving guide rail arranged on the inner wall of the contact cavity; a sliding transverse groove is arranged on the sliding plate; the sliding plate is connected on the moving guide rail through the sliding transverse groove.

2. The shorting device for detecting a charging voltage of an electric vehicle according to claim 1, wherein An insulating mechanism is arranged on each conductive rod, and each insulating mechanism is used in combination with a longitudinal block; the insulating mechanism comprises an insulating rod, and the insulating rod is connected with the conductive rod through a bridging block.

3. A method of using a jumper device as claimed in any of claims 1-2, characterized in that, The use method comprises the following steps: Step 1: connecting the short-circuit device in the charging circuit of the electric vehicle; Step 2: after step 1 is completed, the short-circuit part is connected with the corresponding conductive rod through the control mechanism, thereby realizing the short-circuit of the charging circuit, and the voltage of the charging circuit is obtained through the detection mechanism.

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