Is it safe to charge lithium batteries for electric vehicles indoors?
by:Vglory 2021-04-14
The demand for charging of lithium batteries, is it safe to charge lithium batteries in electric vehicles indoors? Lithium-ion battery is a widely used rechargeable battery. The safety and charging safety of lithium-ion batteries in electric vehicles are the most concerned issues for users. People have put forward higher requirements for lithium-ion battery charging. How to safely charge the lithium battery of an electric car? Let's get to know the author of Energy Storage Electric. Lithium battery charging requirements It is forbidden to use pulse chargers for charging lithium batteries. The voltage and current of the charger must match the lithium battery. In order to better protect the performance of lithium batteries, lithium batteries generally require the charging process to be controlled in four stages: trickle charge (low-voltage precharge), constant current charge, constant voltage charge, and charge termination. The basic requirement of a lithium battery charger is a specific charging current and charging voltage, so as to ensure the safe charging of the lithium battery. Other charging auxiliary functions are added to improve battery life and simplify the operation of the charger, including trickle charging for over-discharged batteries, battery voltage test, input current limit, turn off the charger after charging is complete, and automatic battery after partial discharge Start charging, etc. The charging and discharging characteristics of lithium batteries and nickel batteries are very different. The charging time must be more than 12 hours without charging. Repeat three times and charge according to the standard time and standard methods, especially don't charge longer than 12 hours. Lithium-ion batteries must avoid overcharging the battery during the charging process. Any form of overcharging of lithium-ion batteries will cause serious damage to battery performance and even explosion. Lithium battery charging temperature range: 0~45 degrees Celsius, lithium battery discharging temperature range 0~60 degrees Celsius. The basic requirements for the power adapter for lithium battery charging 1. Fully charge when charging, and the accuracy of the termination charge voltage is required to be about ±1%; 2. There is no current during the charging and discharging process, and short circuit protection needs to be designed; 3. Achieve the termination discharge voltage To prohibit continued discharge, the accuracy of the termination discharge voltage is controlled at about ±3%; 4. For deeply discharged lithium batteries (not lower than the termination discharge voltage), pre-charge with a small current before charging; 5. To ensure the stability of the lithium battery Reliable and prevent the interference of transient voltage changes. The internal delay circuit should be designed with overcharge, overdischarge, and overcurrent protection to prevent transient interference from causing instability. Is it safe to charge lithium batteries for electric vehicles indoors? Do not charge lithium battery electric cars indoors, it is very dangerous. Lithium batteries of electric vehicles should be charged indoors. The batteries should not be charged outdoors. Exposure or exposure to the sun should be avoided. At present, the explosion and spontaneous combustion accidents of electric vehicles are gradually increasing and become 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 an electric car burns, it will be out of control. The extremely fast burning speed will produce a large amount of toxic fumes, making it difficult for people to escape, and the consequences will be disastrous. The explosion of lithium batteries in electric vehicles may cause harm to the people who have exploded recently, but the fire spread in a large area, especially in some residential corridors or electric vehicles charging downstairs. Once the explosion ignites some flammable materials (such as household waste) and further detonates the natural gas pipeline, the consequences are unimaginable. Because natural gas pipelines in residential areas are usually laid outside, if a fire occurs, it is prone to danger. The above is the safe charging method of lithium battery, do you all know? Do not charge lithium battery electric vehicles indoors. Choose an open place outdoors to avoid too late to escape in the event of an accident. The lithium battery of electric vehicles should be used strictly in accordance with the instructions, and the battery should be replaced regularly to reduce potential safety hazards. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Lithium-ion electric vehiclesu200b or lead-acid battery electric vehicles, which is safer?
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