Virtual load non-vehicle-mounted charger detection device with high-power liquid cooling system

Abstract

The utility model provides a virtual load non-vehicle-mounted charger detection device with a high-power liquid cooling system. The virtual load non-vehicle-mounted charger detection device comprises a control module, a voltage source, a current source and a liquid cooling system, the liquid cooling system comprises a liquid cooling controller, a liquid cooling machine, a liquid cooling pump and a liquid cooling gun I, the control module is electrically connected with the voltage source, the current source and the liquid cooling controller, and the control module is used for controlling voltage and current output and controlling operation of the liquid cooling controller; wherein the liquid cooling controller is used for receiving an instruction of a control system and starting the liquid cooling pump and the liquid cooling machine; the liquid cooling machine is used for receiving control of the liquid cooling controller and controlling the liquid cooling machine heat dissipation system; the liquid cooling pump is used for receiving the control of the liquid cooling controller and controlling the operation and stop of the liquid cooling pump; the first liquid cooling gun is inserted into the virtual load special verification port of the non-vehicle-mounted charger. The liquid cooling system is adopted, the minimum diameter of the cable can reach 25 square meters, and the cable is soft, light and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of charger detection devices, in particular to a virtual load non-vehicle charger detection device with a high-power liquid cooling system. Background Art

[0002] At present, there are two main types of non-on-board charger detection equipment on the market. One is the real load detection equipment, which mainly consists of a non-on-board charger detection device and a load. The power of the test charging pile is mainly determined by the load. The larger the load, the greater the power. For example, for a 120kW charging pile, the load required for the test is 120KW. According to the current load design, the weight of a 120KW load can reach 140KG and the volume can reach 3 cubic meters. A special vehicle is required to go to the site for testing. At present, high-power charging piles with liquid cooling systems have a maximum power of 480KW or even 800KW, a maximum voltage of DC1500V, and a maximum current of DC 800A. It is extremely inconvenient to use real load equipment on site, and the actual consumption of electricity during the detection process is very wasteful, which does not meet the requirements of energy conservation and emission reduction. Another detection method is to use a virtual load detection device, which mainly consists of a voltage source, a current source, a standard meter, etc. The virtual load equipment currently supports a current of DC 250A, a voltage of DC 1000V, and a maximum power of 250KW, which can meet the current needs of conventional non-vehicle chargers of 250KW and below. However, for high-power liquid-cooled charging piles, since the maximum current can reach 800A, an air-cooling system is used, and the cable diameter is at least 150 square meters, the cable is hard and inconvenient, and it is not suitable for practical use. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] The purpose of the utility model is to provide a virtual load non-on-board charger detection device with a high-power liquid cooling system, which solves the defects that the existing real load equipment is extremely inconvenient, and the actual consumption of electricity during the detection process and its waste of electricity do not meet the requirements of energy conservation and emission reduction. It adopts an air cooling system, the cable diameter is at least 150 square meters, the cable is hard, inconvenient, and does not meet the actual use requirements.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the utility model provides a virtual load non-on-board charger detection device with a high-power liquid cooling system, including: a control module, a voltage source, a current source and a liquid cooling system; the liquid cooling system includes a liquid cooling controller, a liquid cooling machine, a liquid cooling pump and a liquid cooling gun, the control module is electrically connected to the voltage source, the current source, and the liquid cooling controller, and the control module is used to control the voltage and current output and control the operation of the liquid cooling controller; wherein the liquid cooling controller is used to receive control system instructions, start the liquid cooling pump and the liquid cooling machine; the liquid cooling machine is used to receive control of the liquid cooling controller and control the liquid cooling machine heat dissipation system; the liquid cooling pump is used to receive control of the liquid cooling controller and control the operation and stop of the liquid cooling pump; the liquid cooling gun is inserted into the virtual load special inspection port of the non-on-board charger. The utility model adopts a liquid cooling system, and the cable diameter can be as small as 25 square meters. The cable is soft and light, and easy to use.

[0007] Optionally, the virtual load non-on-board charger detection device with a high-power liquid cooling system also includes a standard meter, which is electrically connected to the control module and is used to sample the voltage and current values ​​output by the voltage source and the current source, and accumulate DC power.

[0008] Optionally, the voltage source is used to receive control system instructions, output a required test voltage, and output the voltage to a standard meter.

[0009] Optionally, the current source is used to receive control system instructions and output a required test current, and the current is input into a virtual load detection port dedicated to the off-board charger through a liquid cooling gun.

[0010] Optionally, the current output range DC of the current source is 0~800A.

[0011] Optionally, the liquid cooler has a built-in liquid temperature sensor.

[0012] Optionally, the liquid cooling controller monitors the outlet temperature and return temperature of the coolant in real time. If the temperature is too high, a control command is fed back to the control system to stop the voltage and current output of the control system. At the same time, the liquid level status is judged, prompting whether to add liquid and monitoring the flow rate.

[0013] Optionally, the virtual load off-board charger detection device with a high-power liquid cooling system also includes a box, and the control module is installed on the side wall of the box.

[0014] Optionally, a mounting frame is provided in the box, the voltage source is installed on one side of the mounting frame, and the current source is installed on the other side of the mounting frame.

[0015] Optionally, the virtual load non-on-board charger detection device with a high-power liquid cooling system also includes an L-shaped frame, which is mounted on a mounting frame located on the same side of the current source, and the standard meter is mounted on the L-shaped frame.

[0016] (III) Beneficial effects

[0017] The utility model provides a virtual load non-vehicle charger detection device with a high-power liquid cooling system, which has the following advantages:

[0018] The utility model can realize the calibration of an off-board charger with a virtual load calibration interface, and calibrate the working error of the off-board charger according to the requirements of "JJG 1149-2022 Off-board Charger for Electric Vehicles (Trial)".

[0019] The utility model can realize testing at any load point.

[0020] The utility model can realize the test of any point from the maximum current to the minimum current within the current output range of the non-on-board charger, and examine the influence of the charging gun line loss on the electric energy metering under different currents and different wire diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a diagram of a virtual load off-board charger detection device with a high-power liquid cooling system of the utility model;

[0022] Figure 2 It is a control unit flow chart of the virtual load off-board charger detection device with a high-power liquid cooling system of the utility model;

[0023] Figure 3 This is a coolant operation flow chart of the virtual load off-board charger detection device with a high-power liquid cooling system of the utility model;

[0024] Figure 4 It is a three-dimensional diagram of the box body of Example 2 of the virtual load off-board charger detection device with a high-power liquid cooling system of the utility model.

[0025] 1. Control module, 2. Voltage source, 3. Current source, 4. L-shaped frame, 5. Current input and output terminals, 6. Standard meter, 7. Box, 8. Mounting frame. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the specific implementation of the present utility model in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

[0027] In the description of the present utility model, unless otherwise specified, "multiple" means two or more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example 1

[0029] like Figure 1 and Figure 2 As shown, the utility model provides a virtual load non-on-board charger detection device with a high-power liquid cooling system, including: a control module, a voltage source, a current source and a liquid cooling system; the liquid cooling system includes a liquid cooling controller, a liquid cooler, a liquid cooling pump and a liquid cooling gun, the control module is electrically connected to the voltage source, the current source, and the liquid cooling controller, the control module is used to control the voltage and current output and control the operation of the liquid cooling controller; wherein, the liquid cooling controller is used to accept control system instructions, start the liquid cooling pump and the liquid cooler, the liquid cooling controller monitors the outlet temperature and return temperature of the coolant in real time, if the temperature is too high, the control command is fed back to the control system to stop the voltage and current output of the control system; at the same time, the liquid level status is judged, prompting whether to add liquid and monitoring the flow rate.

[0030] The liquid cooler is used to receive control from the liquid cooling controller and control the heat dissipation system of the liquid cooler; the liquid cooling pump is used to receive control from the liquid cooling controller and control the operation and stop of the liquid cooling pump; the liquid cooling gun is inserted into the virtual load special calibration port of the non-on-board charger.

[0031] The virtual load non-vehicle charger detection device with a high-power liquid cooling system also includes a standard meter, which is electrically connected to the control module and is used to sample the voltage and current values ​​output by the voltage source and the current source, and accumulate DC power. The voltage source is used to receive control system instructions, output the required test voltage, and the voltage is output to the standard meter. The current source is used to receive control system instructions, output the required test current, and the current is input to the virtual load detection port dedicated to the non-vehicle charger through the liquid cooling gun.

[0032] The current output range DC of the current source is 0-800 A. The liquid cooler has a built-in liquid temperature sensor.

[0033] It should be noted that the control system: built-in in the virtual load verification device of the non-on-board charger, is the main control system of the device, is the human-machine interaction unit of the equipment, controls the voltage source, current source, liquid cooling controller, controls the voltage and current output, and controls the operation of the liquid cooling controller; voltage source: built-in in the virtual load verification device of the non-on-board charger, the voltage output range is DC 0~1500V, and the voltage is output to the electric energy meter of the non-on-board charger; current source: built-in in the virtual load verification device of the non-on-board charger. Standard meter: built-in in the virtual load verification device.

[0034] Liquid cooling controller: built in the liquid cooling system, receives control system instructions. Liquid cooler: built in the liquid cooling system, receives control from the liquid cooling controller, controls the liquid cooling machine heat dissipation system, and has a built-in liquid temperature sensor; Liquid cooling pump: built in the liquid cooling system; Coolant: built in the liquid cooling system, receives control from the liquid cooling controller, has a built-in liquid level sensor and liquid level switch status, and feeds signals back to the liquid cooling controller.

[0035] Liquid cooling gun 1 is a liquid cooling gun that comes with the liquid cooling system. The liquid cooling return pipe is connected to DC+ and DC- respectively. The liquid cooling gun is inserted into the virtual load special verification port of the non-on-board charger. The liquid cooling gun that comes with the non-on-board charger is connected to the electric vehicle during normal charging. When conducting verification, it is connected to the virtual load verification device.

[0036] When this embodiment is implemented, the virtual load device of the non-vehicle charger controls the output of the DC voltage and current source according to the test requirements, and starts the liquid cooling system at the same time. The coolant output pipe is connected to the input pipe of the liquid cooling gun; the coolant return pipe is connected to the two return pipes of the liquid cooling gun. Among them, the control system sets the voltage and current to be output and controls the working state of the liquid cooling system; the voltage source outputs the required voltage value according to the required value set by the control system, and the current source outputs the required current value according to the required value set by the control system. The standard table accumulates the electrical energy according to the output voltage and current, which is used for the working error calculation of the charging pile. The current input and output terminals are used to connect the DC+ and DC- of the liquid cooling output pipe return pipe and the liquid cooling charging gun.

[0037] Example 2

[0038] like Figure 3As shown, the utility model provides a virtual load non-on-board charger detection device with a high-power liquid cooling system, comprising: a box 7, the control module 1 is mounted on the side wall of the box. A mounting frame 8 is provided in the box, the voltage source 2 is mounted on one side of the mounting frame, and the current source 3 is mounted on the other side of the mounting frame. The virtual load non-on-board charger detection device with a high-power liquid cooling system also includes an L-shaped frame 4, the L-shaped frame is mounted on the mounting frame on the same side as the current source, and a current input and output terminal 5 is provided on the outer side wall of the box. The standard meter 6 is mounted on the L-shaped frame.

[0039] The above embodiments are only used to illustrate the present invention, wherein the structures and connection modes of the components may be changed. Any equivalent transformations and improvements based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A virtual load off-board charger detection device with a high-power liquid cooling system, characterized in that: include: A control module, a voltage source, a current source and a liquid cooling system; the liquid cooling system includes a liquid cooling controller, a liquid cooling machine, a liquid cooling pump and a liquid cooling gun; the control module is electrically connected to the voltage source, the current source and the liquid cooling controller; the control module is used to control the voltage and current output and control the operation of the liquid cooling controller; wherein the liquid cooling controller is used to receive control system instructions, start the liquid cooling pump and the liquid cooling machine; the liquid cooling machine is used to receive control of the liquid cooling controller and control the liquid cooling machine heat dissipation system; the liquid cooling pump is used to receive control of the liquid cooling controller and control the operation and stop of the liquid cooling pump; a liquid cooling gun is inserted into the virtual load special inspection port of the non-on-board charger.

2. The virtual load off-board charger detection device with a high-power liquid cooling system as claimed in claim 1, characterized in that: It also includes a standard meter, which is electrically connected to the control module and is used to sample the voltage and current values ​​output by the voltage source and the current source, and accumulate direct current energy.

3. The virtual load off-board charger detection device with a high-power liquid cooling system as claimed in claim 2, characterized in that: The voltage source is used to receive control system instructions and output the required test voltage, and the voltage is output to a standard meter.

4. The virtual load off-board charger detection device with a high-power liquid cooling system as claimed in claim 1, characterized in that: The current source is used to receive control system instructions and output the required test current, and the current is input to the virtual load detection port dedicated to the off-board charger through the liquid cooling gun.

5. The virtual load off-board charger detection device with a high-power liquid cooling system as claimed in claim 1, 2, 3 or 4, characterized in that: The current output range DC of the current source is 0~800A.

6. The virtual load off-board charger detection device with a high-power liquid cooling system as claimed in claim 1, 2, 3 or 4, characterized in that: The liquid cooler has a built-in liquid temperature sensor.

7. The virtual load off-board charger detection device with a high-power liquid cooling system as claimed in claim 1, 2, 3 or 4, characterized in that: The liquid cooling controller monitors the outlet temperature and return temperature of the coolant in real time. If the temperature is too high, a control command is fed back to the control system to stop the voltage and current output of the control system. At the same time, the liquid level status is judged, prompting whether to add liquid and monitoring the flow rate.

8. The virtual load off-board charger detection device with a high-power liquid cooling system as claimed in claim 2 or 3, characterized in that: It also includes a box body, and the control module is installed on the side wall of the box body.

9. The virtual load off-board charger detection device with a high-power liquid cooling system as claimed in claim 8, characterized in that: A mounting frame is arranged in the box body, the voltage source is mounted on one side of the mounting frame, and the current source is mounted on the other side of the mounting frame.

10. The virtual load off-board charger detection device with a high-power liquid cooling system as claimed in claim 9, characterized in that: It also includes an L-shaped frame, which is mounted on a mounting frame located on the same side of the current source, and the standard meter is mounted on the L-shaped frame.

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