Battery pack liquid cooling testing machine

Battery pack liquid cooling machineIt is a device for temperature control after the assembly of P ACK or battery clusters and related accessories is completed. The device is coordinated with P ACK charging and discharging equipment using Ethernet or RS485 communication for joint debugging; Including temperature and temperature control for PACK and battery clusters; Local data storage and MES data upload on the upper computer, dual channel independent, using PLC control;

One,Battery pack liquid cooling machinebasic attributes

1Temperature, flow rate, pressure

1.1 Temperature index requirements

Temperature regulation range: 7℃~85℃

Temperature control accuracy: ±0.5

Temperature control method: The temperature can be freely edited as it changes over time.

1.2Traffic indicator requirements

Flow control range:2-40L/min

Flow control accuracy: ±7%

1.3 Pressure index requirements

Equipment pressure range:10-400kpa

Pressure control accuracy: ±10 kPa

2Cooling medium

Cooling medium: boiling point higher than100 ℃, freezing point below -40 ℃ car antifreeze

3Working mode

Working mode: It can achieve manual and automatic control both locally and remotely;

Remote control: Temperature, pressure, and flow values can be set remotely, and real-time temperature, flow, and pressure values can be read;

4Cooling power

Total cooling capacity:15kW@25℃。

5Communication method

EthernetorRS485Communication interface and provide remote setting of communication protocol parameters (pressure, flow, temperature, etc.) for temperature, pressure, flow, and other data collection and output functions

6Heater

Provide Provide12kwHeater.

Secondly,Battery pack liquid cooling machinedesign scheme

The complete system includes a compressor refrigeration unit, a cold water storage tank, a pump unit, sensors, control devices, and auxiliary devices. Composition of auxiliary devices.

1Refrigeration compressor unit

The refrigeration compressor unit of this system consists of a low-temperature refrigeration compressor, evaporator, condenser, and corresponding accessories. The refrigeration system is composed of a condenser and corresponding accessories. The temperature sensor in the water tank senses the temperature changes in the water tank and uploads them to the temperature controlled refrigeration system. The temperature sensor in the water tank senses the temperature changes in the water tank and uploads them to the temperature controller. The temperature controller controls the temperature of the water tank by adjusting the output power of the compressor. The temperature controller controls the temperature of the water tank by adjusting the output power of the compressor7℃～85Within ℃. The temperature value can also be set by the upper computer or manually.

The compressor unit adopts a combination of three circuits: refrigeration cycle, thermal bypass, and liquid spray cooling. With the help of an intelligent controller, the temperature and pressure of each section of the compressor unit's gas path are adjusted, so that the compressor unit can directly adjust the temperature and pressure of each section of the compressor unit's gas path through the high-temperature controller, enabling the compressor unit to directly achieve the refrigeration cycle at high temperatures.

2, refrigerant tank, refrigerant tank

The refrigerant tank is made of stainless steel and consists of temperature sensors, liquid level sensors, etc. The refrigerant tank detects internal changes through a temperature sensor and uploads them to the temperature controller. The temperature controller controls the cooling changes and uploads them to the temperature controller. The temperature controller controls the opening and closing of the cooling solenoid valve to regulate the temperature of the tank. The liquid tank is connected to the tested component through an external circulation coolant pump, and the temperature of the liquid tank is controlled by the opening and closing of the solenoid valve. The liquid tank is connected to the tested component through an external circulation coolant pump, providing cooling medium at various temperatures for the tested component. The test piece provides cooling media at various temperatures.

3External circulation coolant pump

The external circulation coolant pump is a high-temperature resistant vortex pump, with a pressure of0~0.4MPaThe traffic is5～40L/minA flow sensor is installed at the outlet of the external circulation coolant pump, and a frequency converter is used to install the flow sensor at the outlet of the external circulation coolant pump based on the data from the flow sensor and the parameters set by the upper computer. The frequency converter controls the speed of the coolant pump and accurately adjusts the output flow of the coolant pump based on the data from the flow sensor and the parameters set by the upper computer. Set parameters to control the speed of the coolant pump and accurately adjust the output flow rate of the coolant pump.

4Temperature control system, temperature control system

The temperature control system adopts

The temperature control system adoptsPT100Temperature sensors collect temperature data and usePLCAs a temperature controller, the controller automatically controls the temperature of each node in the entire system.

5,, Communication

The entire system adopts Ethernet orRS485Communication is linked with the upper computer to achieve remote control. The device can be connected via Ethernet orRS485Communication commands enable the system to set temperature, standby, run selection, temperature query, and other functions.

6Safety warning system, safety warning system

In order to ensure the safe operation of the equipment, various safety warning systems are installed on this device. High and low temperature compressor overheating protection, high and low pressure protection, liquid tank level warning, high and low temperature warning and other warning prompts,Comprehensive fault alarm.

7、Battery pack liquid cooling machineThermal insulation facilities, thermal insulation facilities

This equipment adopts rubber insulation measures to strictly insulate all pipelines, ensuring energy conservation and high efficiency.

8Compressed air blowing, compressed air blowing

This device has the function of draining residual coolant from the tested component, saving coolant while protecting the cleanliness of the on-site environment.