A portable automobile charging pile detection device

Abstract

The utility model discloses a portable automobile charging pile detection equipment, including detection main part and with detection main part bluetooth connection's printing unit, be equipped with on detection main part be used for with the fast charging connector and slow charging connector of detection charging pile is connected, the one end of detection main part is away from detection personnel and is equipped with the storage groove for placing printing unit, the position symmetry of detection main part upper along the both sides of storage groove width direction is equipped with transmission groove, two transmission grooves all are equipped with the transmission assembly that can make printing unit is located in the fixed storage groove or is located in the fixed storage groove outside, the power output end of transmission assembly is hinged with the damping pivot in the side of each other, the other end fixed connection of damping pivot is in the width direction both ends of printing unit. The utility model has the advantages of being convenient for user to determine charging pile and obtain paper edition detection result, and being convenient for user to carry at the same time.

Description

Technical Field

[0001] This utility model belongs to the field of electric vehicle charging technology, and in particular relates to a portable vehicle charging pile testing device. Background Technology

[0002] With the popularization of electric vehicles, the number of charging piles has increased rapidly. Some charging piles have problems such as falsely advertised output power, inaccurate power calculation, and substandard safety performance, resulting in poor charging experience for users and even potential safety accidents. However, existing charging pile testing methods usually rely on large testing equipment or laboratory environments, which are complicated to operate and inconvenient for on-site use.

[0003] Chinese patent application No. 201610140149.9 discloses a portable AC / DC charging pile testing device and method, including a processing unit connected to an AC charging pile testing unit and a DC charging pile testing unit. The processing unit is also connected to a data storage unit, a human-machine interaction unit, a communication interface, and a load box expansion interface. The AC charging pile testing unit is used to collect real-time data of AC charging piles and send it to the processing unit; the DC charging pile testing unit is used to collect real-time data of DC charging piles and send it to the processing unit.

[0004] In the above technical solution, the DC charging pile detection unit and the AC charging pile detection unit are integrated into a portable device to achieve simultaneous detection of AC and DC charging piles. It also has external communication capabilities, and the host computer software can be used to configure the device or export the information and logs of the tested charging piles. However, the above technical solution can only generate information and logs of the charging piles with the help of the host computer software, but cannot generate a test report. When it is necessary to generate a test report from the test results of the charging piles, an external printing device is required to print the report. However, after adding an external printing device, the space and weight occupied by the testing device will increase. Furthermore, due to the wiring of the printing device, the printing device is suspended relative to the testing device, which is inconvenient for the testing personnel to carry, hold, or use the printing device and the testing device at the same time. Summary of the Invention

[0005] To address the shortcomings of existing technologies, a portable vehicle charging pile testing device is provided that allows testing personnel to easily carry both the printing and testing equipment together.

[0006] This utility model is achieved using the following technical solution:

[0007] A portable car charging pile testing device includes a testing body and a printing unit connected to the testing body via Bluetooth. The testing body is provided with a fast charging connector and a slow charging connector for connecting to the charging pile to be tested. A storage slot for placing the printing unit is opened at the end of the testing body facing away from the testing personnel. The testing body is provided with symmetrical transmission slots on both sides along the width direction of the storage slot. Each of the two transmission slots is provided with a transmission component that can fix the printing unit in the storage slot or fix it in the storage slot. The power output ends of the transmission components are hinged to a damping shaft close to each other on one side. The other end of the damping shaft is fixedly connected to both ends of the printing unit in the width direction.

[0008] When testing a car charging station, first hold the testing unit and move the damping shaft to move the printing unit away from the testing unit. At this time, the damping shaft located on the outside of the testing unit is kept fixed by the transmission component, thus fixing the printing unit and the testing unit relatively. The user connects to the charging station to be tested through the fast / slow charging interface. The testing unit automatically identifies the charging station type and starts the testing process, printing the test results into a test report through the printing unit, which is then presented to the user. After the test is completed, move the damping shaft again, so that the damping shaft moves the printing unit into the storage slot under the action of the transmission component, maintaining the relative fixation between the printing unit and the testing unit.

[0009] The printing unit can be any existing printing device capable of connecting to the detection subject via Bluetooth and receiving signals.

[0010] Among them, the damping shaft is any existing damping shaft that can keep the printing unit in a vertical state during its own swing and allow the printing unit to be suspended at any angle after the rotation stops.

[0011] This invention enables the printing unit to be nested in a storage slot, combined with a transmission component, allowing the printing unit to be completely concealed inside the testing body. This eliminates the need for external equipment, allowing users to easily hold the testing body with one hand. It also eliminates the risk of shaking and falling caused by traditional external printing units, achieving a seamless closed loop from testing data to report generation. The testing and output stages are compressed into a single testing body, making it convenient for users to measure charging piles and obtain paper-based testing results while also being easy for users to carry.

[0012] Preferably, the side of the detection body facing the inspection personnel is provided with a display panel and operation buttons, the detection body is provided with a detection component, the display panel and the operation buttons are electrically connected to the detection component, and the detection component is connected to the printing unit via Bluetooth.

[0013] The display panel and operation buttons make it easy for users to control the detection subject and obtain detection data and the detection results fed back by the detection components.

[0014] Preferably, the detection component includes a fast charging interface module, a slow charging interface module, a voltage sampling module and a current sampling module that can form a high-voltage signal acquisition channel with the fast / slow charging interface modules, a safety detection module, a power supply module, and a communication module for Bluetooth connection with the printing unit, all arranged sequentially on the circuit board.

[0015] The voltage sampling module is any existing module with a voltage sensor and an analog-to-digital converter that collects the DC or AC voltage signal output from the charging pile; the current sampling module is any existing module with a current sensor and an analog-to-digital converter that can convert the current signal into a voltage signal; when a large current needs to be detected, the current sensor is a Hall sensor.

[0016] The testing unit can collect real-time data on the output voltage, current, power, and power of the charging pile under test through sensors, and, in conjunction with the safety performance testing module, evaluate the performance and safety of the charging pile.

[0017] Preferably, the transmission assembly includes a support column rotatably connected to a side wall of the transmission groove that is relatively far from one end, a support arm fixed to the outer circular surface of the support column, a telescopic member perpendicular to the axis of the support column, and a connecting arm connecting the telescopic end of the telescopic member to the middle section of the support arm. An elastic element is connected between the telescopic end of the telescopic member and the inner side wall of the transmission groove, and the other end of the support arm is provided with a damping shaft for connecting the printing unit.

[0018] When the user moves the printing unit away from the detection body by using the damping pivot, the damping pivot causes the support arm to swing around the support column as the axis. The support arm causes the connecting arm to swing synchronously, thereby extending the telescopic component. When the support arm causes the connecting arm to swing past the telescopic component, the telescopic component returns to its initial length by restoring the elastic deformation of the elastic element, thereby changing the direction of the force and fixing the support arm and the detection body relative to each other, thus keeping the printing unit fixed.

[0019] Preferably, the telescopic component includes a limiting rod fixed to the inner wall of the transmission groove and a limiting sleeve sleeved on the limiting rod. An elastic element, which is a spring, is connected between the limiting sleeve and the inner wall of the transmission groove. The axis of the limiting rod and the axis of the support column are located in the same plane and at the same height in the transmission groove. The connecting arm has a clearance space for the limiting rod to pass through. The connecting arm is hinged to the outer surface of the limiting sleeve through the two side walls of the clearance space.

[0020] When the support arm swings away from the detection body, the connecting arm drives the limiting sleeve to slide along the limiting rod and compress the spring. When the support arm drives the connecting arm to swing beyond the height of the limiting rod axis, the spring's elastic deformation pushes the connecting arm back against the support arm, thus positioning the support arm away from the detection body and fixing it. When the support arm is pushed in the opposite direction, the above process is repeated, so that the support arm is positioned close to the detection body and fixed. This, in turn, drives the printing unit to move relative to the detection body along an arc trajectory, and achieves the fixation of the printing unit at both extreme positions.

[0021] Preferably, the tail end of the limiting rod is provided with a limiting plug with a diameter larger than that of the limiting rod and the limiting sleeve, thereby limiting the sliding path of the limiting sleeve and preventing the limiting sleeve from falling off.

[0022] Preferably, the outer circular surface of the limiting sleeve is symmetrically provided with flat portions on both sides along the width direction of the connecting arm, thereby facilitating the hinge connection between the connecting arm and the limiting sleeve.

[0023] Preferably, the openings of the storage groove and the transmission groove are provided with a snap-fit ​​groove for the damping shaft to snap into, and the snap-fit ​​groove is provided with an anti-slip pad that can fit against the damping shaft.

[0024] The damping shaft is further fixed at its extreme positions on both sides by using a snap-fit ​​groove to assist in fixing the damping shaft.

[0025] Preferably, the printing outlet of the printing unit is located on the inner wall side near the storage slot, and the inner wall of the storage slot is provided with support pads for supporting the outer surface of the printing unit.

[0026] Preferably, the upper surface of the printing unit is provided with a handle, and the upper surface of the detection body is provided with a lifting handle, so that the user can control the printing unit through the handle, thereby driving the damping shaft to move; the lifting handle makes it easy for the user to pick up the detection body.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] The printing unit is nested in a storage slot and combined with a transmission component, concealed inside the detection body. When the printing unit is in storage or in use, it remains relatively fixed to the detection body. This allows users to easily hold the detection body with one hand without the need for external equipment, eliminating the risk of shaking and falling caused by traditional external printing units. It achieves a seamless closed loop from test data to report generation, compressing the testing and output stages into a single detection body. This has the advantages of being convenient for users to measure charging piles and obtain paper test results, while also being easy for users to carry. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of a portable car charging pile testing device according to the present invention;

[0030] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0031] Figure 3 This is a schematic diagram of the structure of the present invention under explosive conditions;

[0032] Figure 4 for Figure 3 A structural diagram from another angle in this state;

[0033] Figure 5 This is a schematic diagram of the transmission component in this utility model;

[0034] Figure 6 This is a schematic diagram of the connecting arm and limiting rod in this utility model;

[0035] Figure 7 This is a schematic diagram of the structure in the unfolded state of this utility model;

[0036] Figure 8 for Figure 7 A structural diagram from another angle in this state.

[0037] Reference numerals: 11. Detection body; 12. Display panel; 13. Operation button; 14. Fast charging connector; 15. Slow charging connector; 16. Handle; 17. Storage slot; 18. Transmission slot; 19. Snap-fit ​​slot; 20. Printing unit; 201. Printing outlet; 202. Handle; 21. Limiting rod; 22. Limiting plug; 23. Limiting sleeve; 231. Flat part; 24. Thrust spring; 25. Connecting arm; 251. Clearance space; 26. Support column; 27. Support arm; 28. Damping pivot; 29. ​​Support foot pad. Detailed Implementation

[0038] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1 As shown, this embodiment discloses a portable car charging pile testing device, including a testing body 11 and a printing unit 20 connected to the testing body 11 via Bluetooth. Figure 3As shown, the printing unit 20 has a handle 202 on its upper surface, and the detection body 11 has a handle 16 on its upper surface. The detection body 11 has a fast charging connector 14 and a slow charging connector 15 for connecting to the charging pile under test. The detection body 11 contains a detection component. The side of the detection body 11 facing the testing personnel has a display panel 12 and an operation button 13. The display panel 12 and the operation button 13 are electrically connected to the detection component. The detection component is connected to the printing unit 20 via Bluetooth. The detection component includes a fast charging interface module, a slow charging interface module, a voltage sampling module and a current sampling module that can form a high-voltage signal acquisition channel with the fast charging interface module and the slow charging interface module, a safety detection module, a power supply module, and a communication module for connecting to the printing unit 20 via Bluetooth, which are sequentially arranged on the circuit board. The fast charging interface module supports mainstream fast charging protocols, such as CCS, CHAdeMO, GB / T, etc.; the slow charging interface module supports slow charging protocols including Type 1, Type 2, GB / T, etc.

[0040] The high-voltage signal acquisition channel can acquire DC / AC voltage / current signals output by the charging pile through sensors, convert them into digital signals that the equipment can process, use a voltage divider circuit to reduce the high voltage signal to a safe range, and then sample and quantize it through an analog-to-digital converter.

[0041] The detection unit 11 can collect the output voltage, current, power and power data of the charging pile under test in real time through sensors, and evaluate the performance and safety of the charging pile in combination with the safety performance detection module.

[0042] When it is necessary to detect the power of a charging pile, the instantaneous power is calculated by collecting voltage and current signals in real time. When the charging pile to be tested is a DC charging pile, the power is the product of voltage and current; when the charging pile to be tested is an AC charging pile, the power is the product of voltage, current and power factor.

[0043] When it is necessary to detect the power level of a charging pile, the cumulative power level is calculated by collecting power data in real time. When the charging pile to be detected is a DC charging pile, the power level is the integral of power over time; when the charging pile to be detected is an AC charging pile, the power level is the integral of voltage, current and power factor over time.

[0044] When it is necessary to test the insulation performance of a charging pile, a test voltage is applied to the charging pile to measure its insulation resistance in order to determine whether there is a risk of leakage.

[0045] When it is necessary to test the grounding performance of a charging pile, measure the grounding resistance of the charging pile to be tested to ensure that the grounding system meets safety standards.

[0046] When it is necessary to test the overvoltage and overcurrent protection of the charging pile, the protection function of the charging pile can be tested by simulating overvoltage or overcurrent conditions to see if it can be triggered normally.

[0047] like Figure 2 As shown, the end of the detection body 11 facing away from the detection personnel has a storage slot 17 for placing the printing unit 20. The detection body 11 has symmetrical transmission slots 18 on both sides along the width direction of the storage slot 17. Both transmission slots 18 are equipped with transmission components that can fix the printing unit 20 inside or outside the storage slot 17. The power output ends of the transmission components are hinged to a damping shaft 28 on one side close to each other. The other end of the damping shaft 28 is fixedly connected to both ends of the printing unit 20 in the width direction.

[0048] like Figure 4 As shown, the slots of the storage groove 17 and the transmission groove 18 are provided with a snap-fit ​​groove 19 for the damping shaft 28 to snap into. The snap-fit ​​groove 19 is provided with an anti-slip pad that can fit with the damping shaft 28. The printing outlet 201 of the printing unit 20 is located on the side close to the inner wall of the storage groove 17. The inner wall of the storage groove 17 is provided with a support foot pad 29 for supporting the outer surface of the printing unit 20.

[0049] like Figure 5 , Figure 6 As shown, the transmission assembly includes a support column 26 rotatably connected to the side wall of the transmission groove 18 that is relatively far from one end, a support arm 27 fixed to the outer circular surface of the support column 26, a telescopic component, and a connecting arm 25 connected to the telescopic end of the telescopic component and the middle section of the support arm 27. The telescopic component includes a limiting rod 21 fixed to the inner side wall of the transmission groove 18 and a limiting sleeve 23 sleeved on the limiting rod 21. The outer circular surface of the limiting sleeve 23 is symmetrically provided with flat portions 231 on both sides along the width direction of the connecting arm 25. An elastic element is connected between the limiting sleeve 23 and the inner side wall of the transmission groove 18. The elastic element is a thrust spring 24. The thrust spring 24 keeps the limiting sleeve 23 in the middle section of the limiting rod 21 in the normal state.

[0050] The tail end of the limiting rod 21 is provided with a limiting plug 22 with a diameter larger than that of the limiting rod 21 and the limiting sleeve 23. The axis of the limiting rod 21 and the axis of the support column 26 are located in the same plane and at the same height in the transmission groove 18. The connecting arm 25 is provided with a clearance space 251 for the limiting rod 21 to pass through. The connecting arm 25 is hinged to the outer surface of the limiting sleeve 23 through the two side walls of the clearance space 251. The other end of the support arm 27 is provided with a damping shaft 28 for connecting the printing unit 20.

[0051] like Figure 7 , Figure 8As shown, when a car charging station needs to be inspected, the handheld inspection body 11 is moved away from the inspection body 11 by moving the damping shaft 28. The damping shaft 28 causes the support arm 27 to swing away from the inspection body 11, which in turn causes the connecting arm 25 to drive the limiting sleeve 23 to compress the thrust spring 24 on the limiting rod 21. When the axes of the support arm 27, the connecting arm 25, and the limiting rod 21 are collinear, the thrust spring 24 is compressed to its limit position. When the support arm 27 drives the connecting arm 25 to swing beyond the height of the limiting rod 21, the spring returns to its elastic deformation and generates thrust, causing the connecting arm 25 to push the support arm 27 back, thus causing the support arm 27 to be in a downward tilted state. This positions the support arm 27 away from the inspection body 11 and fixes it in place. At this time, the damping shaft 28 located outside the inspection body 11 acts as a transmission component. The printing unit 20 is kept fixed so that it protrudes from the outside of the detection body 11 and is relatively fixed to the detection body 11, thereby allowing the printing outlet 201 of the printing unit 20 to protrude. Then, according to the target to be tested, the fast charging connector 14 or the slow charging connector 15 is selected to electrically connect to the charging pile to be tested. After the connection is completed, the detection body 11 automatically identifies the charging pile type and starts the detection process through the display panel 12 and operation button 13. After obtaining the detection data, the detection results are transmitted to the printing unit 20 through the communication module. The detection results are printed out by the printing unit 20 to present the detection report to the user. After the detection is completed, the damping shaft 28 is moved again, so that the damping shaft 28 drives the printing unit 20 to move into the storage slot 17 under the action of the support arm 27 and keeps the printing unit 20 relatively fixed to the detection body 11. The printing unit 20 is in close contact with the inner wall of the storage slot 17 through the support foot pad 29.

Claims

1. A portable vehicle charging pile testing device, comprising a testing body and a printing unit connected to the testing body via Bluetooth, wherein the testing body is provided with a fast charging connector and a slow charging connector for connecting to the charging pile to be tested, characterized in that: The detection body has a storage slot for placing the printing unit at one end facing away from the detection personnel. The detection body has symmetrical transmission slots on both sides along the width direction of the storage slot. Each of the two transmission slots has a transmission component that can fix the printing unit inside or outside the storage slot. The power output ends of the transmission components are hinged to a damping shaft on one side close to each other. The other end of the damping shaft is fixedly connected to both ends of the printing unit in the width direction.

2. The portable vehicle charging pile testing device according to claim 1, characterized in that: The side of the detection body facing the inspection personnel is equipped with a display panel and operation buttons. The detection body contains a detection component. The display panel, operation buttons, and detection component are electrically connected. The detection component is connected to the printing unit via Bluetooth.

3. The portable vehicle charging pile testing device according to claim 2, characterized in that: The detection component includes a fast charging interface module, a slow charging interface module, a voltage sampling module and a current sampling module that can form a high-voltage signal acquisition channel with the fast / slow charging interface modules, a safety detection module, a power supply module, and a communication module for Bluetooth connection with the printing unit, all arranged sequentially on the circuit board.

4. A portable vehicle charging pile testing device according to claim 1, 2, or 3, characterized in that: The transmission assembly includes a support column rotatably connected to a side wall of the transmission groove that is relatively far from one end, a support arm fixed to the outer circular surface of the support column, a telescopic member perpendicular to the axis of the support column, and a connecting arm connecting the telescopic end of the telescopic member to the middle section of the support arm. An elastic element is connected between the telescopic end of the telescopic member and the inner side wall of the transmission groove. The other end of the support arm is provided with a damping shaft for connecting the printing unit.

5. The portable vehicle charging station testing device according to claim 4, characterized in that: The telescopic component includes a limiting rod fixed to the inner wall of the transmission groove and a limiting sleeve sleeved on the limiting rod. An elastic element, which is a spring, is connected between the limiting sleeve and the inner wall of the transmission groove. The axis of the limiting rod and the axis of the support column are located in the same plane and at the same height in the transmission groove. The connecting arm has a clearance space for the limiting rod to pass through. The connecting arm is hinged to the outer surface of the limiting sleeve through the two side walls of the clearance space.

6. The portable vehicle charging pile testing device according to claim 5, characterized in that: The elastic element is a thrust spring, and the tail end of the limiting rod is provided with a limiting plug with a diameter larger than that of the limiting rod and the limiting sleeve.

7. The portable vehicle charging pile testing device according to claim 5, characterized in that: The outer circular surface of the limiting sleeve is symmetrically provided with flat portions on both sides along the width direction of the connecting arm.

8. The portable vehicle charging pile testing device according to claim 1, characterized in that: The storage groove and the transmission groove are provided with a snap-fit ​​groove for the damping shaft to snap into, and the snap-fit ​​groove is provided with an anti-slip pad that can fit with the damping shaft.

9. A portable vehicle charging pile testing device according to claim 8, characterized in that: The printing outlet of the printing unit is located on the inner wall side near the storage slot, and the inner wall of the storage slot is provided with support pads for supporting the outer surface of the printing unit.

10. A portable vehicle charging pile testing device according to claim 9, characterized in that: The printing unit has a handle on its upper surface, and the detection body has a lifting handle on its upper surface.

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