PROBLEM TO BE SOLVED: To provide a battery control device 1 capable of pre-heating an on-vehicle battery 2 by suppressing a decrease in service life due to excessive charging/discharging, and obtaining output characteristics of a stable on-vehicle battery 2.SOLUTION: A battery control device 1 comprises an on-vehicle battery 2 and a control unit 7. The on-vehicle battery 2 comprises a first cell group 21 in which five cells C1 are connected in series and a second cell group 22 in which four cells C2 are connected in series. The control unit 7 comprises: balancing means for setting the difference between a charging rate of the first cell group 21 and a charging rate of the second cell group 22 to a target differential amount St or higher when the vehicle state is not a use state; first connection switching means for switching the connection state of the first cell group 21 and the second cell group 22 to parallel connection when the vehicle state changes to the use state; and second connection switching means for switching the connection state of the first cell group 21 and the second cell group 22 to serial connection when the charging rate of the first cell group 21 equals the charging rate of the second cell group 22.SELECTED DRAWING: Figure 2
【課題】過剰な充放電による寿命低下を抑制して車載バッテリ2を予熱できるとともに、安定した車載バッテリ2の出力特性を得られるバッテリ制御装置1を提供する。【解決手段】車載バッテリ2と制御ユニット7とを備えたバッテリ制御装置1であって、車載バッテリ2が、5個のセルC1が直列接続された第1セル群21と、4個のセルC2が直列接続された第2セル群22とで構成され、制御ユニット7が、車両の状態が使用状態でない場合、第1セル群21の充電率と第2セル群22の充電率との差を目標差分量St以上にするバランシング手段と、車両の状態が使用状態に移行する際、第1セル群21及び第2セル群22の接続状態を並列接続に切換える第1接続切換え手段と、第1セル群21の充電率及び第2セル群22の充電率が等しい場合、第1セル群21及び第2セル群22の接続状態を直列接続に切換える第2接続切換え手段とを備えたことを特徴とする。【選択図】図2
ON-VEHICLE BATTERY CONTROL DEVICE AND ON-VEHICLE BATTERY CONTROL METHOD
車載バッテリの制御装置、及び車載バッテリの制御方法
2018-05-31
Patent
Electronic Resource
Japanese
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 |
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