Maintenance system of high-efficiency energy-saving power lithium ion battery

Abstract

The invention relates to a maintenance system of a high-efficiency energy-saving power lithium ion battery. The maintenance system of the high-efficiency energy-saving power lithium ion battery comprises a controllable power source, an MOSFET control switch, a PWM isolation drive circuit, a current control circuit, a sampling resistor, a voltage collecting circuit and a current collecting circuit. The positive electrode of the controllable power source, the MOSFET control switch, the power lithium ion battery, the sampling resistor, and the negative electrode of the controllable power source are sequentially in series connection. The voltage collecting circuit is connected to the two ends of the power lithium ion battery in parallel, and the current collecting circuit is connected to the two ends of the power lithium ion battery in parallel. The input end of the current control circuit is connected with the negative electrode of the power lithium ion battery and the output end of the PWM isolation drive circuit respectively, and the output end of the current control circuit is connected with the feedback end of the controllable power source. Compared with the prior art, the maintenance system of the high-efficiency energy-saving power lithium ion battery has the advantages that the purpose that a charging switch power source supplies charging energy of the needed amount is achieved, the phenomenon that supply exceeds demand is avoided, and energy-saving charging is achieved.

Description

technical field [0001] The invention relates to a power lithium ion battery maintenance system, in particular to an efficient and energy-saving power lithium ion battery maintenance system. Background technique [0002] Lithium-ion battery is an ideal power source due to its high working voltage, small size, light weight, no memory effect, no pollution, small self-discharge, and long cycle life. In actual use, in order to obtain a higher discharge voltage, a plurality of single lithium-ion batteries are generally connected in series to form a lithium-ion battery pack. Before forming a battery pack, because the characteristics of each monomer are different, it must be assembled and sorted. The process of grouping and sorting is the process of forming lithium-ion batteries. Through charging and discharging tests on single lithium-ion batteries, obtain relevant information about the matching of single lithium-ion batteries, such as single charge and discharge capacity, intern...

AI Technical Summary

Problems solved by technology

[0003] The traditional power lithium-ion battery maintenance system adopts the constant voltage output of the power supply, and the method of changing the loop resistance value adjusts the loop current, so that a lot of energy, that is, the output of the switching power supply is more than the energy actually required for charging the power lithium-ion battery, and is consumed in the form of heat through the resistance Yes, causing great waste

Images