New energy vehicle charging gun detection
Test background
With the improvement of people's environmental awareness and concerns about climate change, people have begun to pay attention to reducing carbon emissions and cleaner travel methods. As an emerging clean energy means of transportation, new energy vehicles are gradually recognized and used by people in this context. The popularity of new energy vehicles is inseparable from their low-carbon, environmentally friendly, energy-saving and quiet advantages. Just as gasoline cars need to use a refueling gun to refuel, new energy vehicles use charging guns to charge the car and replenish electricity. Cars are large commodities, and the quality and protection functions of charging guns are very important for new energy vehicles.

Charging gun detection

Charging gun type
First, you have to understand the type of charging gun. According to different charging methods, charging guns can be divided into DC charging guns and AC charging guns.

Comparison between AC charging guns and DC charging guns

AC charging guns are mainly divided into three types, type1, type2, GB/T, which can also be called American standard, European standard and national standard. Tesla has its own standard charging interface, but under pressure, Tesla has also begun to change its standards to make its cars more adaptable to the market depending on market conditions, just like domestic Teslas must be equipped with national standard charging ports.
DC charging guns are generally corresponding to AC charging guns. Each region has its own standards, except for Japan. Some new energy models of Mitsubishi and Nissan in Japan will use CHAdeMO DC charging gun interfaces.

Reference standards
As the scale of the new energy vehicle market continues to expand, the demand for supporting charging gun facilities has also risen rapidly, whether in import and export or domestic, and suppliers are overwhelmed. In this case, the quality and safety issues of the charging gun need to meet the relevant standards before they can be circulated on the market. However, different regions have different testing standards for charging guns.

In addition to the differences in working principles, specifications, and usage scenarios, the testing standards for AC charging guns and tributary charging guns are the same. The relevant standards for charging guns are listed here for reference only. The specific standards also need to be determined by the classification of charging guns and the distribution channels for relevant standard testing.

Charging gun test standards

Test items
lcs has a full set of testing equipment and many experienced testing engineers, and has developed a special charging gun full-project testing process, which can accurately test the various parameters related to the charging gun, effectively help customers improve the performance of the products, and help the products circulate in the market.

Electrical performance test

Temperature rise test
Verify the non-operating current limit value under overcurrent conditions
Grounding measures
Breaking capacity protection grounding conductor continuity loss test
CP grounding and abnormal disconnection test
Verify automatic disconnection under power supply voltage failure
Verify IC-CPD reclosing function
50°C temperature test
Plug-in life
Durability test of IC-CPD residual current function
Electronic component aging test

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Reliability test

Xenon lamp aging
Vibration and shock test
Verify the effect of stress on the wire
Climate test
Verify the torque applied by IC-CPD to the fixed installation socket
Humidity and salt spray test for marine and coastal environments
Non-removable IC-CPD Bending test
Low storage temperature test
Mechanical strength test of IC-CPD with cable

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EMC test

Charging power line conducted disturbance test
Charging system radiated disturbance test
Voltage fluctuation and flicker test
Electrostatic discharge interference test
Charging system RF radiation interference test
Electrical fast transient pulse group interference test
Surge (impact) interference test
Charging power line conducted interference test
AC voltage sag, short interruption and voltage change interference test
Power frequency magnetic field interference test
Different harmonic voltage waveform test

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Safety test

Verify electric shock protection
Contact current test
Insulating material resistance to abnormal heating and flammability test
Resistance to tracking

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Chemical test

Odor

Chemical load