How to ensure the safety of batteries used in electric wheelchairs?

On February 23, 2024, a fire caused by an electric vehicle in Nanjing, Jiangsu Province caused heavy casualties. For a time, everyone was very worried and even afraid of "electric". Electric vehicles are so easy to cause fire accidents, so is it really safe to charge motorized wheel chairs at home? How to ensure safety during charging?

Electric wheel chairs generally use low-voltage batteries. Regardless of whether they use lead-acid batteries or lithium batteries, the voltage is generally limited to around 24V, which is much lower than the 48V, 60V, and 72V of electric vehicles. Therefore, when charging and discharging, electric wheel chairs generate less heat and current, and the risk of overheating, explosion, and battery short circuit is extremely low.At the same time, the battery capacity of electric wheel chairs is smaller than that of electric vehicles, generally around 6 to 20 amps, and the required charging power is relatively low. Therefore, a low-power charger is usually sufficient, which can also reduce the risk of overload and overheating during the charging process.

In addition, the frame, motor housing, battery housing and controller housing of branded electric wheel chairs are not directly connected to the battery. They are generally wrapped with rubber for insulation to avoid conductivity. Therefore, it is basically safe to charge an electric wheel chair purchased through a formal channel with brand guarantee at home. Of course, you should also pay attention to some details during charging to reduce battery loss and even avoid potential accident risks.

1. Avoid using cheap, low-quality, unknown brand batteries and chargers.

If you buy an automatic electric wheel chair price that is too cheap, be careful. In order to control costs, the manufacturer will use unknown brand batteries and chargers, which will have unstable performance and are prone to voltage fluctuations and overheating.

2. Avoid overcharging the battery!

The so-called overcharging of the battery generally refers to the battery charging time being too long, the battery has too much power, and the heat generated by continuous heating will damage the battery internally, thereby damaging the battery structure and reducing the battery life.

3. Avoid modifying the electric wheel chair without permission.

If you want to drive faster and farther, and want to modify the electric wheel chair, you must consult the manufacturer in advance and do not modify it without permission, because the modified parts may change the original battery system and parameters of the electric wheel chair, causing the battery and the electric wheel chair to be incompatible, thus causing accidents.

4. Check the battery regularly.

The battery of the electric wheel chair should be checked regularly. If it is used for a long time, the battery will age and the capacity will decrease. If the battery life is obviously shortened and the charging time is longer, replace it with a new one in time. If the battery is found to be swollen, it should be replaced in time even if it is not aged.