The invention provides a charging and discharging equalization device for fast charging a battery pack and a corresponding equalization method. The charging and discharging equalization device of the invention comprises an equalization power source module, an equalization bus, an equalization resistor, a relay group and a protection circuit; batteries requiring equalization are connected into the equalization bus through the node relay group; based on the equalization bus, the batteries can be charged in discharging and the batteries can be subjected to discharging in charging, and therefore, electric quantity equalization can be realized. When the battery pack equalization device of the invention charges the battery pack, only one equalization resistor is required to be adopted, while, according to an equalization device in the prior art, a corresponding equalization resistor is required to be configured for each battery, and thus, compared with the equalization device in the prior art, the charging and discharging equalization device of the invention can assist in saving space, and a small resistor can be selected to realize faster equalization, and a heat emitting resistor is far away from a sampling chip, so that sampling is not affected. With the charging and discharging equalization device of the invention adopted, electricity amount discharged by the whole battery pack can be increased, and therefore, more efficient utilization of the battery pack can be realized.
Charging and discharging equalization device for fast charging battery pack and corresponding equalization method
2016-01-13
Patent
Electronic Resource
English
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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