Main performance index of the lithium ion battery

Source: 2020 - 03 - 23 14:07 hits: main performance index of the first lithium ion battery 1. Battery capacity of battery capacity is divided into additional capacity and the actual capacity. Refers to the additional capacity battery in 20 ℃ & plusmn; Ambient temperature of 5 ℃, at a rate of about 5 h to stop the discharge voltage shall be provided by the electricity, the C5 said. Practice refers to the ability of battery cells in a certain discharge conditions of practical ability, mainly affected by the discharge rate and temperature of ( Therefore, strictly speaking, the capacity of the battery should be instructed to charge and discharge conditions) 。 Capacity of the unit: mAh, Ah, 1啊= 1000 mah) 。 2. Battery resistance battery internal resistance is refers to the current through the battery cells in the process of running resistance. It is composed of ohmic resistance and polarization resistance. Battery internal resistance, and to cause a decline in operating voltage battery discharge, the discharge time shortened. The size of the internal resistance of the main data, manufacturing process, the structure of the battery. The influence of such factors as The battery resistance is one of the important parameters to measure battery performance. 3 open circuit voltage, voltage, is the point at which the battery does not work, battery electrical potential difference between the positive and negative. In general, the lithium ion battery recharged after the open circuit voltage in 4. 1 - 4. About 2 v, open circuit voltage in 3 after discharge. 0 v. Through to the battery open circuit voltage detection, can determine the battery charging status. Working voltage, also called the terminal voltage, is refers to the current through the circuit when the potential difference between the positive and negative battery. In the case of battery discharge operation, when current flows through the battery, do not need to overcome the resistance of the battery internal resistance form, so the operating voltage is always lower than the open circuit voltage, charging the opposite. Lithium ion battery discharge voltage of about 3. 6v。 4. Moment of plasma channel discharge channel bending moment is refers to the battery is full of a certain voltage discharge bending moment. Three core cell, for example, was measured by 3. 6 v moment discharge channel. When constant voltage charging to 4. 2 v voltage, charging current is less than 0. 02 c, stop charging, charging completes, stop charging for 10 minutes. The discharge current discharge any multiplier to 3. 6 v when the discharge of torque moment for the discharge of the current channel. Due to some use lithium ion battery operating voltage of electric equipment with voltage requirements, such as below the required value, can appear unable to work. Therefore, the plasma channel is one of the important measure of battery performance. 5. Charge and discharge ratio than refers to the battery charge and discharge in a certain period of time needed to release its extra capacity current value. 1 c is equal to the extra capacity of battery, generally represented by the letter 'c'. If the battery in the name of the additional capacity of 10 ah, is 10 a 1 c ( 1乘法器) , 5 a 0. 5 c, 100 a to 10 c, and so on. 6. Self-discharge self-discharge rate, also known as charging power, is refers to the battery in open state, the battery under certain conditions of storage battery power. First by the battery manufacturing process, data, storage conditions, the influence of such factors. It is an important measure of battery performance. 7, electric power, 1) Charging power refers to in the process of charging the battery consumption of electrical energy into chemical energy stored in the battery. Mainly by the battery technology, formulation and the influence of the temperature of working environment. In general, the higher the temperature, lower charging power. ( 2) Discharge power refers to the discharge in a certain condition, the real power of the battery to discharge to the terminal voltage release of extra capacity. It is mainly by the discharge rate, the influence of environmental factors such as temperature, internal resistance. In general, the higher the discharge rate, the lower the discharge power. The lower the temperature, the lower the discharge power. 8. Cycle life of battery cycle life number refers to the rules when the battery capacity decreased to a certain value, the battery under the certain condition of charge and discharge of charge and discharge frequency multiplied by the number of battery. According to the regulations of GB of lithium ion battery capacity persistence