To accurately estimate the state of a lead acid battery even when there exists a variation in the temperature between the cells of the lead acid battery.SOLUTION: Provided is a lead acid battery state detector comprising a processor and a memory for storing a program which, when executed by the processor, realizes the functions below, the lead acid battery state detector receiving a voltage signal from a voltage sensor that detects the terminal voltage of a lead acid battery, a current signal from a current sensor that detects a charge/discharge current of the lead acid battery and temperature signals from at least two temperature sensors that detect the temperatures of cells located at both ends of an electrolytic bath, calculating values of elements that constitute an equivalent circuit of the lead acid battery on the basis of the voltage and current signals of the lead acid battery during a discharge, correcting the values of elements that constitute the calculated equivalent circuit on the basis of a difference in the received temperatures of the cells located at both ends, detecting the state of the lead acid battery on the basis of the corrected values of the elements, and outputting the detected state of the lead acid battery.SELECTED DRAWING: Figure 1
【課題】鉛蓄電池のセル間の温度のばらつきが存在する場合であっても、鉛蓄電池の状態を正確に推定する。【解決手段】プロセッサと、プロセッサによって実行された場合に以下の機能を実現するプログラムを格納するメモリと、を有し、鉛蓄電池の端子電圧を検出する電圧センサからの電圧信号と、鉛蓄電池の充放電電流を検出する電流センサからの電流信号と、電解槽の両端に位置するセルの温度を検出する少なくとも2つの温度センサからの温度信号を受信し、鉛蓄電池の放電中の電圧信号と電流信号とに基づいて鉛蓄電池の等価回路を構成する素子の値を算出し、算出された等価回路を構成する素子の値を、受信された両端に位置するセルの温度差に基づいて素子の値を補正し、補正された素子の値に基づいて、鉛蓄電池の状態を検出し、検出された鉛蓄電池の状態を出力する、ことを特徴とする。【選択図】図1
LEAD ACID BATTERY STATE DETECTOR AND LEAD ACID BATTERY STATE DETECTION METHOD
鉛蓄電池状態検出装置および鉛蓄電池状態検出方法
2020-09-17
Patent
Electronic Resource
Japanese
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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 / 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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