Battery energy feedback battery test method

Abstract

The invention discloses a method for testing batteries capable of feeding energy back to batteries and solves the problem of waste of energy caused by relatively high energy loss in the charging and discharging processes because the group application technology of charging, discharging, maintaining and managing of the power storage batteries is badly lagged behind. The key point of the technical scheme is characterized in that the method comprises the following steps: S100, receiving alternating current transmitted by a power grid, then rectifying the alternating current, converting the alternating current into direct current and transmitting the direct current to a common direct-current busbar, wherein the common direct-current busbar is connected with a plurality of DC / DC power modules,and each DC / DC power module is connected with a lithium battery corresponding to the DC / DC power module; S200, charging the lithium batteries through the common direct-current busbar and the DC / DC power modules. The method for testing batteries capable of feeding energy back to batteries is capable of reducing the energy loss reduced by charging and discharging of the power storage batteries and increasing the utilization rate of the energy.

Description

technical field [0001] The invention relates to a battery energy feedback battery testing method. Background technique [0002] At present, the key technologies, key materials and product research of lithium-ion and other new power batteries have made significant progress, and the conditions for popularization and application have become increasingly mature. [0003] At present, the charging of the power battery is mainly to convert the alternating current into the corresponding direct current through the rectification / feedback device, and through the DC / DC power supply module, the corresponding direct current is stepped up and down to the voltage for charging the lithium battery, and due to the different initial power of the lithium battery itself Different, so when individual lithium batteries are fully charged, the excess energy will be fed back to the grid through the DC / DC power module and the rectification / feedback device in turn, and the grid will use the fed back ene...

AI Technical Summary

Problems solved by technology

[0003] At present, the charging of the power battery is mainly to convert the alternating current into the corresponding direct current through the rectification / feedback device, and through the DC / DC power supply module, the corresponding direct current is stepped up and down to the voltage for charging the lithium battery, and due to the different initial power of the lithium battery itself Different, so when individual lithium batteries are fully charged, the excess energy will be fed back to the grid through the DC / DC power module and the rectification / feedback device in turn, and the grid will use the fed back energy to charge the system again, and Since the excess energy has to go through the rectification / feedback device and the power grid repeatedly, the energy loss is greatly increased (such as image 3 shown), there is still room for improvement

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