PROBLEM TO BE SOLVED: To provide a charger capable of supplying a power to a battery arranged by use of a novel positive electrode material while suppressing the rise in battery temperature or the increase in power consumption in charging the battery, and a charging method.SOLUTION: A battery 10 arranged by use of a novel positive electrode material has a feature such that the resistance is large in the case of a remaining capacity under a threshold of characteristic change, and the resistance in the case of a remaining capacity of 0% becomes twice or more the resistance in the case of a remaining capacity equal to or larger than the threshold of characteristic change. When the remaining capacity of the battery 10 is under the threshold of characteristic change, a control circuit 14 controls an auxiliary power supply 13 to supply a power from the auxiliary power supply 13 to the battery 10, and charges the battery 10 until the remaining capacity of the battery 10 reaches at least the threshold of characteristic change. Therefore, it is possible to avoid such an event that in the condition of a large resistance, a power is supplied from a motor 12 in a regeneration state to the battery 10 through power conversion circuit 11. Besides, in the case that the remaining capacity of the battery 10 is under the threshold of characteristic change, the battery 10 is charged by flowing a reserve charging current smaller than a normal charging current.SELECTED DRAWING: Figure 7
【課題】充電時における電池の温度上昇や消費電力の増加を抑えつつ、新規正極材料で構成された電池に電力を供給できる充電装置及び充電方法を提供する。【解決手段】新規正極材料で構成された電池10は、残存容量が特性変化閾値未満の場合における抵抗が大きく、かつ、残存容量が0%の場合における抵抗が特性変化閾値以上の場合の2倍以上になる特性を有する。制御回路14は、電池10の残存容量が特性変化閾値未満の場合、補助電源13を制御して補助電源13から電池10に電力を供給し、電池10の残存容量が少なくとも特性変化閾値になるまで電池10を充電する。そのため、抵抗が大きい状態で回生状態になったモータ12から電力変換回路11を介して電池10に電力を供給するような事態をなくせる。しかも、電池10の残存容量が特性変化閾値未満の場合、通常充電電流より小さい予備充電電流を流すことで電池10を充電する。【選択図】図7
CHARGER AND CHARGING METHOD
充電装置及び充電方法
2017-04-06
Patent
Elektronische Ressource
Japanisch
IPC: | 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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |