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I. National Standard Number

The national standard number for lead-acid battery chargers is GB/T 18332.1-2017.

II. Scope of Application

This national standard is applicable to lead-acid batteries and starter battery chargers for electric vehicles, as well as chargers in similar applications. Among them, the lead-acid batteries for electric vehicles refer to those with a rated voltage between 24V and 600V and a rated capacity between 4Ah and 400Ah.

III. Technical Requirements

Lead-acid battery chargers are required to meet the following technical requirements:

Output Characteristics

Lead-acid battery chargers need to ensure the stability of the output voltage and output current. The output voltage should match the battery type and capacity. In addition, an output current overload protection device should be installed.

Efficiency and Power Factor

Lead-acid battery chargers should have high efficiency, and the energy utilization rate shall not be lower than 80%. Meanwhile, they are required to meet the requirement that the power factor is not less than 0.7.

Safety Performance

Lead-acid battery chargers need to have functions of anti-reverse current, over-temperature, over-voltage, short-circuit and over-current protection to ensure the safe charging of batteries. In addition, protection against too low output voltage and too early output current should also be set up.

Other Technical Requirements

Lead-acid battery chargers are also required to meet the following requirements:

It can be connected to an external signal input to control the operating state of the charger.

When the charger is working normally, it should be able to display the output voltage and output current on the device.

It is required to ensure that the thermal runaway temperature of the charger housing is not higher than 90°C.

The noise limit of the equipment should comply with national requirements.

The above are the main contents and technical requirements of the national standard for lead-acid battery chargers. When purchasing lead-acid battery chargers, consumers should select products that meet the national standard according to their own needs to avoid safety accidents caused by improper use.

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