What are the causes of battery bulging in hot weather and how can it be prevented?

Many companies in the electric vehicle industry can obviously feel that the weather is getting hot and the battery bulging is more than in other seasons. At present, many battery manufacturers are strengthening the standards of after-sales service, and battery bulges are facing deterioration or even no after-sales service. So what are the causes of battery bulging in hot weather, and how can it be avoided?

Through understanding with battery professionals and technicians, there are many reasons for the hot weather to cause battery bulging, of which 60% are mainly caused by the following three reasons:

1, electric vehicle charger exposed to high temperature to charge the battery, charger parameters drift.

When the weather gets hot, many electric vehicle users do not notice the cooling of the charger when charging the battery, when the charger itself heats up when charging the battery, when it is exposed to high temperature, it is easy to lead to charger parameter drift. In particular, some chargers with relatively poor quality, the occurrence of this parameter drift at high temperature is more common, when the battery is fully charged, the charger with parameter drift can not turn the lamp in time, but also charge the battery, after many times, the battery is naturally easy to charge.

2, the electric car stops to charge the battery, the battery has not had time to cool down.

Electric vehicles in the driving state, the battery itself will heat up, coupled with the hot weather, the temperature of the battery may even reach more than 70 ° C, at this time to charge the battery will aggravate the loss of water battery, reduce the service life of the battery, aggravate the risk of battery flushing.

3. Charge the battery under direct sunlight to aggravate the water loss of the battery.

The battery also heats up during the charging process, and charging in direct sunlight will also cause the battery to lose water, resulting in battery damage and bulging.

In hot weather, charge the electric car in the shade or in the evening. At present, the battery manufacturers on the battery bulge penalty is relatively large, once the battery bulge may face a price penalty, usually in the sale of electric vehicles and battery replacement, give customers a reminder, but also reduce their own trouble.