The power battery pack is the core component of the battery car and needs to have good sealing performance to isolate the impact of the external environment on the battery system. Therefore, the sealing test of the battery car is particularly important.This time, Hirays Technology will bring you a battery car battery sealing test. We hope that our sealing testing plan will inspire you. The details of the plan are as follows.

Display of Hirays Technology battery vehicle battery sealing tester (battery before tooling)

one.Battery sealing process

The battery sealing needs to match the battery pack box structure and sealing ring. The upper and lower bottom of the battery box needs to be laser spliced ​​to achieve overall sealing, which is structural sealing.In addition, the battery will also use sealing aids such as sealing rings or sealants. Assists in forming a more airtight structure.

two.Common problems with battery car batteries not being properly sealed

1. The sealing glue between the upper cover and the bottom tank cracks, resulting in poor sealing, which can easily lead to the penetration of external liquid and pollute the battery working environment.

2. Safety valve leakage due to sealing problems may cause damage to other parts.

3. Insufficient sealing causes acid leakage at the terminals, which affects the electric wires of the battery car and causes the circuit to burn out.

4. Failure to seal will lead to loss of capacity and reduced battery life and safety.

three.Difficulties and key points of battery sealing test for electric vehicles

1. The overall seal of the battery car battery is not suitable for direct inspection.

2. The battery of a battery car is large and heavy, making it difficult to detect.

3. Non-destructive testing needs to be implemented to avoid substantial damage to the test items.

Four.How does Hirays Technology deal with the difficulty of battery sealing testing for electric vehicles?

Display of Hirays Technology battery car battery sealing tester

Since the overall seal of the electric vehicle battery is not suitable for direct inspection, Hirays Technology adopts indirect inspection. However, in order to assist in inspection, we need to make molds and tooling corresponding to the inspection products.The mold shape matches the product shape and is divided into upper mold and lower mold. When the upper and lower molds are closed, a sealed testing space can be formed, which is conducive to achieving high-precision sealing testing.The mold is not only used as a container for battery car battery testing, but also as a protection device during testing. The mold can isolate the outside influence on the battery during testing and achieve non-destructive testing.

In addition, during testing, the equipment will fill a sealed workpiece cavity with a certain pressure and volume of dry, moisture-free, and impurity-free gas, then cut off the compressed air supply and allow it to stand still for a period of time to stabilize the pressure. After a predetermined measurement time, small changes in air pressure in the testing environment can be monitored.The sensor transmits this information to the detection system, and finally through a series of calculations, the gas leakage value can be obtained. Based on the leakage value, the sealing performance and IP waterproof level of the battery car battery can be detected.

This electric car battery sealing tester of Hai Ruisi Technology has high detection accuracy, no damage during the detection process and low detection cost, so it is deeply loved by the majority of manufacturers.

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