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Many businesses in the electric vehicle industry can clearly feel that there are more battery bulges in hot weather than in other seasons. At present, many battery manufacturers are strengthening their after-sales service standards, while battery drum packs are facing downgrades or even no after-sales service. So, what are the reasons for battery bulges caused by hot weather and how can we avoid them?

Through consulting with battery professionals, it has been found that there are various reasons for battery bulges caused by hot weather, with 60% of the reasons mainly being caused by the following three factors:

1. Electric vehicle chargers are exposed to high temperatures to charge batteries, causing charger parameters to drift.

The weather has become hot, and many electric vehicle users do not pay attention to the cooling of the charger when charging the battery. When the charger charges the battery, it itself heats up. If exposed to high temperatures again, it is easy to cause charger parameter drift. Especially for some chargers with poor quality, parameter drift is more common at high temperatures. When the battery is fully charged, the charger with parameter drift cannot turn on the light in time and is still charging the battery. After multiple times, the battery is naturally prone to bulging.

2. The electric car charges the battery as soon as it stops, and the battery has not cooled down yet.

When an electric vehicle is riding, the battery itself will heat up. In addition, the weather is hot, and the temperature of the battery can even reach 70 ℃ or above. Charging the battery at this time will exacerbate water loss, reduce its service life, and increase the risk of battery bulging.

3. Charging the battery under direct sunlight conditions exacerbates battery dehydration.

Batteries can also generate heat during charging, and if charged in direct sunlight, it can cause water loss and damage to the battery, resulting in bulges.

When the weather gets hot, try to charge your electric vehicle in a cool place or in the evening. At present, battery manufacturers have relatively strong penalties for battery bulges. Once the battery bulges, it may face price reduction penalties. When selling electric vehicles and replacing batteries, it is important to remind customers and reduce their own troubles.

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