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Is it safe to charge lithium-ion batteries indoors for electric vehicles? Lithium ion batteries are a widely used rechargeable battery, and the safety and charging safety of electric vehicle lithium batteries are the most concerned issues for users. People have put forward higher requirements for lithium battery charging. How to safely charge lithium-ion batteries for electric vehicles? Let's learn together with the editor.

The demand for charging in lithium batteries

It is prohibited to use pulse chargers for lithium battery charging. The voltage and current of the charger must match the lithium battery. In order to better protect the performance of lithium batteries, the charging process is generally required to be controlled in four stages: trickle charging (low-voltage pre charging), constant current charging, constant voltage charging, and charging termination.

The basic requirement for a lithium battery charger is a specific charging current and voltage to ensure safe charging of the lithium battery. The addition of other charging assistance functions is to improve battery life and simplify charger operation, including using trickle charging for over discharged batteries, battery voltage detection, input current limitation, turning off the charger after charging is completed, and automatically starting charging after partial discharge of the battery.

There is a significant difference in the charging and discharging characteristics between lithium batteries and nickel batteries. When not charging, the charging time must exceed 12 hours. Repeat this process three times and charge according to the standard time and method. Especially, do not charge for longer than 12 hours.

During the charging process of lithium-ion batteries, it is necessary to avoid overcharging the battery. Any form of overcharging in lithium-ion batteries can cause serious damage to battery performance, even explosion.

Lithium battery charging temperature range: 0-45 degrees Celsius, lithium battery discharge temperature range: 0-60 degrees Celsius.

Basic requirements for power adapters for lithium battery charging

1. When charging, it should be fully charged, and the accuracy of the termination charging voltage is required to be around ± 1%;

During the charging and discharging process, if there is no current, a short circuit protection should be designed;

3. When the termination discharge voltage is reached, it is prohibited to continue discharging, and the accuracy of the termination discharge voltage should be controlled within ± 3%;

4. For lithium batteries with deep discharge (not lower than the termination discharge voltage), pre charge them in a low current manner before charging;

To ensure the stable and reliable operation of lithium batteries and prevent interference from transient voltage changes, a delay circuit with overcharge, over discharge, and over current protection should be designed internally to prevent instability caused by transient interference.

Is indoor charging of lithium-ion batteries for electric vehicles safe?

Lithium ion battery electric vehicles should not be charged indoors as it is very dangerous. Electric vehicle lithium battery charging should be carried out outdoors and cannot be done indoors. It should be avoided from exposure to sunlight or rain.

At present, electric vehicle explosions and self ignition accidents are gradually increasing, becoming the main source of fire. The fire department reminds citizens that lithium battery electric vehicles should be parked and charged outdoors to prevent fire accidents. If you choose to charge indoors, once the lithium battery of the electric vehicle burns, it will be uncontrollable, and the extremely fast burning speed will produce a large amount of toxic smoke, making it difficult for people to escape, and the consequences are unimaginable.

Explosion of lithium-ion batteries in electric vehicles may cause harm to the nearest occupants, and fires can spread widely, especially in some residential corridors or downstairs charging of electric vehicles. Once an explosion ignites some flammable materials (such as household waste) and further detonates a natural gas pipeline, the consequences are unimaginable. Because natural gas pipelines in residential areas are usually laid externally, there is a risk of danger in the event of a fire.

The above is the method for safe charging of lithium batteries. Do you all understand it? Do not charge lithium-ion battery electric vehicles indoors. Choose an open outdoor area to avoid accidents that may not be able to escape in time. The use of lithium batteries in electric vehicles should strictly follow the instructions, and the batteries should be replaced regularly to reduce safety hazards.

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