Cell charge-discharge device, charge-discharge modules and method for charging-discharging cell

Abstract

The invention provides a cell charge-discharge device, charge-discharge modules and a method for charging-discharging a cell. The cell charge-discharge device comprises a plurality of charge-discharge modules. Each charge-discharge module comprises a current-limiting transistor, a current-limiting resistor, a charge control unit and a discharge control unit, wherein the charge control unit and the discharge control unit are in a voltage tracing mode. When the charge-discharge modules charge a cell, the charge control units limit the voltages of the current-limiting transistors and the current-limiting resistors within a fixed value. When the cell is discharged, the discharge control units limit the voltages at two ends of the current-limiting transistors and the current-limiting resistors, which are in parallel connection, within a fixed value and feed the energy discharged by the cell back to a power supply. The cell charge-discharge device reduces the heat loss generated by the current-limiting transistors and achieves the purposes of not only improving the utilization rate of energy sources, but also meeting specifications of safety regulations on the energy source recycling ofcell discharge, thereby according with the trend calling for environmental protection and energy saving all over the world at present.

Description

technical field [0001] The present invention relates to battery charging and discharging, and in particular, relates to a battery charging and discharging device and a battery charging and discharging method capable of effectively reducing heat loss generated during battery charging and discharging and achieving DC energy recovery and reuse. Background technique [0002] In recent years, with the continuous development of science and technology, various computer devices appear on the market from time to time. Among all kinds of computer equipment, notebook computers have gradually become the mainstream of the market due to their small size, easy portability, and space-saving advantages. They are also one of the indispensable tools in modern people's daily life. [0003] Generally speaking, when a notebook computer is in a battery-powered mode, it is usually necessary to connect multiple batteries in series to provide the voltage required by the notebook computer. In the pro...

AI Technical Summary

Problems solved by technology

In this way, the original power quality factor (PowerQuality Factor, PQF) is likely to be reduced due to the feedback of these alternating currents, which makes the original intention of recycling the discharge energy greatly compromised.

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