One-driving-six 600KW full liquid cooling electric vehicle overcharging system

Abstract

The utility model relates to a one-to-six 600KW full liquid cooling electric automobile overcharging system, which comprises a rectifier cabinet, a charging terminal and a human-computer interaction interface, the charging terminal comprises a liquid cooling charging terminal and five fast charging terminals, and six charging modules are connected in parallel in a direct current bus mode and then are controlled by a rectifier cabinet controller in a centralized manner. According to communication between the charging terminal controller and a vehicle-mounted BMS, the rectifier cabinet flexibly distributes voltage and current required by the charging module to output an electric vehicle according to power required by the vehicle, and the charging module is controlled to start charging; the maximum output power of the system can reach 600 KW, and the problems that an existing electric automobile is low in charging speed, and a traditional charging pile is low in power and cannot supplement energy rapidly are effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicle charging technology, in particular to the field of a one-to-six 600KW fully liquid-cooled electric vehicle supercharging system. Background Art

[0002] With the advancement of technology and the enhancement of environmental awareness, the global market's acceptance of new energy vehicles continues to increase. At the same time, the advancement of battery technology has significantly improved the range of new energy vehicles, and the performance and comfort of vehicles are also constantly improving. Therefore, the electric vehicle market continues to expand. However, the most restrictive factor in the development of new energy vehicles is the battery; as a key component, the quality and endurance of the battery are the focus of consumers. From the initial slow charging to fast charging, and then to today's ultra-fast charging technology, although the charging technology of new energy vehicles has made great progress, it still faces the problems of insufficient charging facilities and long charging time, which has become one of the main factors restricting the development of electric vehicles. Summary of the invention

[0003] In view of this, the utility model provides a one-to-six 600KW fully liquid-cooled electric vehicle supercharging system, which effectively solves the problems of slow charging speed of existing electric vehicles and low power of traditional charging piles that cannot quickly replenish energy.

[0004] To achieve the above purpose, the utility model provides a one-to-six 600KW fully liquid-cooled electric vehicle supercharging system, including a rectifier cabinet, a charging terminal and a human-machine interface, wherein the rectifier cabinet is connected to the charging terminal; the charging terminal includes a liquid-cooled charging terminal and five fast-charging charging terminals, and the six charging modules are connected in parallel by a DC bus and then centrally controlled by a rectifier cabinet controller. According to the communication between the charging terminal controller and the on-board BMS, the rectifier cabinet flexibly allocates the charging modules according to the power required by the vehicle, and controls the charging modules to start charging;

[0005] The rectifier cabinet adopts a water-electricity separation design, with a liquid cooling circulation system at the top and a power rectifier at the bottom. Liquid cooling water is driven by an electromagnetic pump to bring the heat from the lower power supply part to the upper part for heat dissipation. The electronic pump adopts PWM control to control the flow of the electronic pump through real-time temperature.

[0006] The rectifier cabinet and the charging terminal are designed separately. The rectifier cabinet is responsible for converting AC power into DC power. The charging terminal communicates with the electric vehicle BMS to obtain vehicle charging information, and then communicates with the rectifier cabinet. The rectifier cabinet outputs the voltage and current required by the electric vehicle to charge the electric vehicle.

[0007] A thermal sensor is placed on the power device of the charging module, and the thermal sensor is connected to a controller to monitor the temperature of the charging module in real time during operation. When the temperature is greater than the rated temperature, the module is shut down for protection.

[0008] Preferably, voltage measurement sensors are placed on the input side and the output side to detect the input and output voltages in real time. When the voltage is greater than the rated input voltage and the rated output voltage, the machine is shut down for protection; a current sensor is placed on the output side to monitor the output current in real time. When the output current is greater than the rated output current, the machine is shut down for protection.

[0009] Preferably, the human-computer interaction interface includes an intelligent diagnostic system that monitors the operating status of the equipment in real time, predicts potential failures, and provides maintenance suggestions to reduce the maintenance cost of the supercharging system.

[0010] Preferably, a DC1200V SIC power device is used so that the charging terminal voltage output can reach DC1000V. The circuit board adopts a three-layer wiring method. The top and bottom layers are signal wiring layers, and the middle layer is a copper layer with a thickness of 3.5mm for arranging the power supply. The output voltage of a single charging terminal is DC300V-DC1000V, the output current is 0-400A, and the power of a single charging terminal can reach up to 120KW.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The power of a single charging module in the utility model can reach up to 120KW, and only five modules are needed to form a 600KW supercharging system. Compared with traditional low-power charging modules, the number of supercharging system modules is reduced, the volume of the rectifier cabinet is reduced, and when the output power is 120KW, only one charging terminal is needed for output. Since the DC contactor is a contact type, the number of DC contactors is reduced, and the system failure rate caused by the closing life is reduced.

[0013] 2. The utility model adopts a liquid cooling system, which is more efficient and less noisy than the traditional air cooling system. The heat sink is close to the power device to improve the heat dissipation efficiency. The cooling fan and cooling water pump of the system are both PWM controlled according to the output power control to extend the service life.

[0014] 3. The system of the utility model adopts a split design, in which the rectifier cabinet and the charging terminal are loaded separately. The rectifier cabinet provides a stable, reliable and adjustable DC power supply for the charging terminal, and the charging terminal completes the charging of the electric vehicle.

[0015] 4. The rectifier cabinet of this utility model adopts the design of water-electricity separation, which effectively prevents safety hazards such as short circuit and leakage caused by water entering the circuit and reduces the impact of water and electricity corrosion and oxidation on the equipment, prolongs the service life of the equipment, and ensures safe and reliable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a system structure diagram of the utility model. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0018] The utility model provides the following technical solutions:

[0019] The one-to-six 600KW fully liquid-cooled electric vehicle supercharging system includes a rectifier cabinet, a charging terminal and a human-machine interface. The rectifier cabinet is connected to the charging terminal; the charging terminal includes a liquid-cooled charging terminal and five fast-charging charging terminals. The six charging modules are connected in parallel using a DC bus and then centrally controlled by the rectifier cabinet controller. According to the communication between the charging terminal controller and the on-board BMS, the rectifier cabinet flexibly allocates the charging modules according to the power required by the vehicle and controls the charging modules to start charging.

[0020] The rectifier cabinet adopts a water-electricity separation design. The upper part is a liquid cooling circulation system, and the lower part is a power rectifier part. The electromagnetic pump drives the liquid cooling water to bring the heat of the lower power part to the upper part for heat dissipation. The electronic pump adopts PWM control, and the flow of the electronic pump is controlled by the real-time temperature to achieve the best heat dissipation effect and the best power efficiency.

[0021] The rectifier cabinet and the charging terminal are designed separately. The rectifier cabinet is responsible for converting AC power into DC power. The charging terminal communicates with the electric vehicle BMS to obtain the vehicle charging information, and then communicates with the rectifier cabinet. The rectifier cabinet outputs the voltage and current required by the electric vehicle to charge the electric vehicle.

[0022] A thermal sensor is placed on the power device of the charging module, and the thermal sensor is connected to the controller to monitor the temperature of the charging module in real time during operation. When the temperature is higher than the rated temperature, the module is shut down for protection.

[0023] Voltage measurement sensors are placed on the input and output sides to detect the input and output voltages in real time. When the voltage is greater than the rated input voltage and rated output voltage, the machine will be shut down for protection. Current sensors are placed on the output side to monitor the output current in real time. When the output current is greater than the rated output current, the machine will be shut down for protection. The overcurrent and overvoltage protection devices will automatically cut off the power supply to prevent equipment damage or safety accidents.

[0024] The human-computer interaction interface includes an intelligent diagnostic system that monitors the operating status of the equipment in real time, predicts potential failures, and provides maintenance suggestions to reduce the maintenance cost of the supercharging system.

[0025] The DC1200V SIC power device is used to make the charging terminal voltage output reach DC1000V, outputting stable high voltage. The circuit board adopts a three-layer wiring method. The top and bottom layers are signal wiring layers, and the middle layer is a 3.5mm thick copper layer for arranging the power supply. It can pass a maximum current of 400A; the output voltage of a single charging terminal is DC300V-DC1000V, the output current is 0-400A, and the power of a single charging terminal can reach up to 120KW.

[0026] The system is a rectifier cabinet corresponding to six charging terminals. When the liquid-cooled charging terminal is in use, the six charging modules are connected in parallel through contactors to provide power to the liquid-cooled charging terminal, so that the maximum power of the liquid-cooled charging terminal can reach 600KW. When the six terminals are used at the same time, one charging module corresponds to one charging terminal.

[0027] The above description is only a preferred embodiment of the utility model, and does not constitute any form of limitation to the utility model. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the utility model. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. One-to-six 600KW fully liquid-cooled electric vehicle supercharging system, characterized by: It includes a rectifier cabinet, a charging terminal and a human-machine interaction interface. The rectifier cabinet is connected to the charging terminal; the charging terminal includes a liquid-cooled charging terminal and five fast-charging charging terminals. Six charging modules are connected in parallel by a DC bus and then centrally controlled by a rectifier cabinet controller. According to the communication between the charging terminal controller and the on-board BMS, the rectifier cabinet flexibly allocates charging modules according to the power required by the vehicle and controls the charging modules to start charging. The rectifier cabinet adopts a water-electricity separation design, with a liquid cooling circulation system at the top and a power rectifier at the bottom. Liquid cooling water is driven by an electromagnetic pump to bring the heat from the lower power supply part to the upper part for heat dissipation. The electronic pump adopts PWM control to control the flow of the electronic pump through real-time temperature. The rectifier cabinet and the charging terminal are designed separately. The rectifier cabinet is responsible for converting AC power into DC power. The charging terminal communicates with the electric vehicle BMS to obtain vehicle charging information, and then communicates with the rectifier cabinet. The rectifier cabinet outputs the voltage and current required by the electric vehicle to charge the electric vehicle. A thermal sensor is placed on the power device of the charging module, and the thermal sensor is connected to a controller to monitor the temperature of the charging module in real time during operation. When the temperature is greater than the rated temperature, the module is shut down for protection.

2. The one-to-six 600KW fully liquid-cooled electric vehicle supercharging system according to claim 1 is characterized in that: Voltage measurement sensors are placed on the input and output sides to detect the input and output voltages in real time. When the voltage is greater than the rated input voltage and rated output voltage, the machine will be shut down for protection. Current sensors are placed on the output side to monitor the output current in real time. When the output current is greater than the rated output current, the machine will be shut down for protection.

3. The one-to-six 600KW fully liquid-cooled electric vehicle supercharging system according to claim 1 is characterized in that: The human-computer interaction interface includes an intelligent diagnostic system that monitors the operating status of the equipment in real time, predicts potential failures, and provides maintenance suggestions to reduce the maintenance cost of the supercharging system.

4. The one-to-six 600KW fully liquid-cooled electric vehicle supercharging system according to claim 1 is characterized in that: The use of DC1200V SIC power devices allows the charging terminal voltage output to reach DC1000V. The circuit board adopts a three-layer wiring method. The top and bottom layers are signal wiring layers, and the middle layer is a 3.5mm thick copper layer for arranging the power supply. The output voltage of a single charging terminal is DC300V-DC1000V, the output current is 0-400A, and the power of a single charging terminal can reach up to 120KW.

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