A high-rate battery generally refers to a lithium battery, and a lithium-ion battery is a high-charge battery that relies on lithium ions to move between a positive electrode and a negative electrode to operate. During charge and discharge, Li+ is embedded and deintercalated between the two electrodes: when charging the battery, Li+ is deintercalated from the positive electrode, embedded in the negative electrode via the electrolyte, and the negative electrode is in a lithium-rich state; A battery containing a lithium element as a electrode is generally used. It is the representative of modern high-performance batteries.
　　 Lithium batteries are classified into high-rate batteries and lithium-ion batteries. At present, mobile phones and notebook computers use lithium-ion batteries, which are commonly referred to as high-rate batteries, and true high-rate batteries are rarely used in everyday electronic products because of their high risk.
　　 The high-rate battery has a high energy density and a high uniform output voltage. Self-discharge is small, good battery, less than 2% per month (recoverable). There is no memory effect. The operating temperature range is -20 ° C ~ 60 ° C. The regenerative function is excellent, the battery can be charged and discharged quickly, the charging efficiency is up to 100%, and the output power is large. long lasting. It does not contain toxic or hazardous substances and is called a green battery.
　　 Charging is an important step in the repeated use of batteries. The charging process of high-rate batteries is divided into two phases: a constant current fast charging phase and a constant voltage current decreasing phase. During the constant current fast charging phase, the battery voltage is gradually increased to the standard voltage of the battery, and then the constant voltage is turned under the control chip, the voltage is no longer raised to ensure that the battery is not overcharged, and the current is gradually reduced to the rise of the battery power. Set the value and finish charging. The power statistics chip can calculate the battery power by recording the discharge curve. After the lithium ion battery is used for many times, the discharge curve will change. Although the lithium ion battery does not have a memory effect, improper charging and discharging will seriously affect the battery function.