The battery pack liquid cooling test machine is an indispensable equipment in the development and production of electric vehicle batteries, which is used to simulate the thermal environment of the battery in actual operation and test the heat dissipation performance of the battery pack. However, there may be some faults during the use of the equipment, which will affect the accuracy of the test results and the normal operation of the equipment. This article will analyze the common faults of the battery pack liquid cooling test machine, and provide corresponding solutions to help users better use and maintain the equipment.

　　Fault 1: Coolant leakage

　　1, fault phenomenon: coolant from the equipment joints or seals seepage, resulting in the test machine can not work normally.

　　2. Cause of failure: aging, damage or improper installation of seals; The coolant pipe connection is loose or damaged.

　　3, solution: check the seal status regularly, find aging or damage timely replacement; Make sure coolant pipe joints are securely secured and replace connectors if necessary.

　　Fault two: poor cooling effect

　　1, the fault phenomenon: under the set conditions, the battery pack temperature can not be reduced to the expected value, affecting the accuracy of the test results.

　　2, the cause of the failure: insufficient coolant flow; The radiator is blocked; Coolant pump is faulty.

　　3, solution: check the coolant flow rate to ensure that the equipment requirements are met; Clean the radiator regularly to maintain the heat dissipation performance; Check the coolant pump working status, find fault in time to repair or replace.

　　Fault 3: The control system is faulty

　　1. Fault symptom: The device cannot be started or stopped; Set parameters can not be adjusted normally; The data display is abnormal.

　　2, the cause of the failure: control system hardware failure; Software program errors; The sensor is damaged.

　　3, the solution: regularly check the control system hardware, find fault timely maintenance or replacement; Keep software programs up to date and fix known bugs; Check the status of the sensor regularly and replace it in time if it is damaged.

　　Fault 4: The battery pack is not installed properly

　　1. Fault symptom: The battery pack cannot be properly installed or fixed; The battery pack shifted during the test.

　　2. Cause of failure: The installation base is damaged; The fixed device is loose or damaged.

　　3, solution: regularly check the installation base status, find damage in time to replace; Ensure that the fixtures are securely secured and replace the fixtures if necessary.

　　V. Preventive measures and maintenance suggestions

　　1. Regularly check the status of each component of the equipment to discover and deal with potential problems in a timely manner.

　　2. Keep the equipment clean to avoid dust and dirt affecting the heat dissipation performance.

　　3, the operator training, familiar with equipment operating procedures and common troubleshooting methods.

　　4. Establish equipment maintenance records, track equipment maintenance, and provide reference for later maintenance.

　　5, maintain good communication with equipment suppliers, timely access to technical support and spare parts supply.

　　6. Carry out regular professional maintenance and maintenance of the equipment to ensure its stable and reliable performance.