Separately-charging battery charger

Abstract

Separately-charging battery charger relates to a storage battery charger and comprises a group of high-frequency switching power supplies, a high-frequency output transformer with N groups of balance outputs, N high-frequency rectifying circuits, N charging state sampling circuits, a charging state comparison and selection circuit and N charging control output circuits in constant-voltage, constant-current and trickling stages. The charger has the advantages that the group of high-frequency switching power supplies are utilized to respectively independently charge N storage batteries which are in series connection, and by means of balancing functions of the N charging state sampling circuits, the charging stage comparison and selection circuit and the switching power output transformer, charging state of each charging circuit is monitored and adjusted in real time and each of the circuits works in a charging mode of constant-current, constant-voltage and trickling stages independently simultaneously. As the storage batteries are charged independently without interference, defects caused by interference due to performance difference in the conventional series-connection charging process are eliminated, charging quality of the storage batteries is improved greatly, and service lives of the storage batteries are prolonged.

Description

technical field [0001] The invention relates to a storage battery charger, and further relates to a sub-charge storage battery charger which independently charges each series-connected storage battery. Background technique [0002] In recent years, the rapid development of electric vehicles (including electric vehicles and electric bicycles) has brought great convenience to people's travel. With the popularization of electric bicycles, people's requirements for electric vehicles are getting higher and higher, and the battery of electric vehicles is increasingly exposed to its defects in use: the batteries used in electric vehicles on the market are all used in series, so the charger is not When charging, it is also directly charged in series with multiple cells. Although this method is relatively simple, the disadvantage is that when the performance of each battery is different, each battery will have different charging results under the same charging state. In addition, t...

AI Technical Summary

Problems solved by technology

With the popularization of electric bicycles, people's requirements for electric vehicles are getting higher and higher, and the battery of electric vehicles is increasingly exposed to its defects in use: the batteries used in electric vehicles on the market are all used in series, so the charger is not When charging, it is also directly charged in series with multiple cells

This method has no application advantage due to the increase of charging energy consumption due to the use of multiple sets of power supplies

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