Lithium battery custom manufacturers: introduce to you what are the characteristics of lithium batteries
A lithium battery is a battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. The emergence of lithium batteries came from the great inventor Edison. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time.
Lithium batteries have the advantages of small size, high specific energy, no memory, long cycle system life, high-voltage rechargeable batteries, and low-life lithium batteries. They are different from Ni-Cd and Ni-MH rechargeable batteries. Safety factors must be considered when charging, charging and discharging lithium batteries to prevent their characteristics from deteriorating. The maintenance of lithium batteries is very important for overcharging, overcharging and discharging, overcurrent and short circuit faults. Therefore, for the maintenance of lithium batteries, a maintenance route is generally designed in the battery pack.
Due to the high specific energy of lithium batteries, the safety factor of rechargeable batteries cannot be guaranteed. When the battery is overcharged, the kinetic energy of the battery will cause excess capacity after the battery temperature rises, so the electrolyte of the lithium battery dissolves to produce vapor, and there is a danger of fire or rupture due to the increase in air pressure; on the contrary, in the case of overcharge and discharge , The dissolution of lithium battery electrolyte will cause deterioration of the characteristics and performance of rechargeable batteries, thereby reducing the frequency of use of rechargeable batteries.
The maintenance of the lithium battery power supply circuit is to ensure the safety factor and prevent the deterioration of the characteristics when the battery is overcharged and charged and discharged. The lithium battery maintenance power circuit is composed of a maintenance IC and two output power MOSFETs. When the maintenance IC monitors the battery voltage, when the battery is overcharged and discharged, it will switch to the external output power MOSFET for maintenance. Maintenance of rechargeable batteries. The functions of the maintenance IC include battery overcharge maintenance, overcharge and discharge maintenance, and overcurrent/short circuit fault maintenance.
