How to properly use lithium batteries for electric vehicles? What aspects should be paid attention to when using lithium batteries?
What aspects should be paid attention to when using?
As environmental pollution becomes more and more serious, everyone is paying more and more attention to environmental protection, and green new energy is becoming more and more popular. As the leader of new green energy, lithium battery electric vehicles are naturally widely regarded.
But how to use lithium batteries for electric vehicles correctly? What aspects should be paid attention to when using lithium batteries?
1. The lithium battery must be charged with a special charger. Due to the material system of the lithium battery, overcharge, overdischarge, overcurrent, short circuit, etc. of the lithium battery can easily affect the performance and life of the lithium battery, and there are even safety hazards. Lithium batteries have very high requirements for chargers (preferably the original matching lithium battery chargers). The special chargers for lithium batteries have a built-in high-precision control chip that can charge the lithium batteries with constant current and voltage.
2. Charge in time when the battery is in short supply: Avoid recharging the lithium battery after undervoltage, and also avoid charging for a long time. The lithium battery should be charged and discharged as shallowly as possible, which can greatly improve the performance and life of the battery.
3. Do not charge in harsh environments such as ultra-high, low temperature and humidity (required temperature for lithium battery charging: 0°-40°C), and cover the lithium battery charging port after each charge to avoid prolonged exposure to moisture Under the environment, the lithium battery charging interface is oxidized and rusted, which affects the charging efficiency and charging safety.
4. Lithium batteries are strictly prohibited to be charged indoors, and the charging plug should be unplugged in time after the lamp is fully charged to prevent the charger and the management system from being in standby for a long time, affecting the battery life and causing other hidden dangers.
5. Lithium batteries or chargers will automatically stop charging after the batteries are fully charged, and the so-called "trickle" charging of lead-acid batteries is not required. Although both lithium batteries and chargers have overcharge protection, long-term charging of lithium batteries puts them on the verge of overcharge for a long time. If the overcharge protection fails, the consequences are unimaginable. Therefore, it is recommended to charge the battery on an open ground during the day as much as possible, and unplug the battery when it is full.
6. It is forbidden to use over-power and over-load. Lithium battery will produce high temperature during over-power work, and even burn out the lithium battery protection chip, which will seriously affect the safety and life of lithium battery. It is best to drive at low speed in places with large slopes. Or pedal assist to avoid excessive battery current, which affects battery safety and life.
7. Drive at a constant speed as much as possible to avoid emergency braking. Emergency braking will generate electricity to be quickly recharged to the battery. Causes such as instantaneous ultra-high current may cause the battery temperature to rise, and the lithium battery may even burn out or even catch fire at high temperature.
8. Unlike nickel-metal hydride batteries, lithium batteries have no memory effect and can be charged and discharged at any time. Moreover, it is best to charge and discharge the lithium battery shallowly, do not wait for the battery to be completely discharged, which may easily lead to over-discharge and damage the lithium battery.
9. Lithium battery storage: When the lithium battery is not used for a long time, the lithium battery should be disconnected from the vehicle, and the lithium battery should be recharged once every 60 days to avoid the self-discharge of the lithium battery or the power consumption of the protection board. It will affect the life of lithium battery. Even if the current lithium battery is rain-proof, it is only waterproof for a short time. If the battery is in a humid environment or water for a long time, the battery may get water through the socket, etc., the lithium battery and the battery management system and the electrical devices on the car Once water enters, it may cause short-circuit damage to the lithium battery and system components, resulting in other safety hazards.
10. Keep the battery compartment flat: ensure that the force of the lithium battery is uniform and the battery case is flat, otherwise violent collisions may cause the positive and negative electrode materials of the battery to break through the diaphragm, and lithium ions may precipitate, contact with the air, or even short-circuit and temperature rise. Burn or even explode.
In short, the safe use of lithium battery electric vehicles requires good use habits to ensure the performance and life of electric vehicles. While electric vehicles are convenient for us, they also require our normal maintenance and maintenance.
