LEAD-ACID BATTERY DEVICE, CONTROLLER OF LEAD-ACID BATTERY, CONTROL METHOD OF LEAD-ACID BATTERY

• Main Authors: OKANDA TAKAHARU, YODA KAZUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 22.03.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

PROBLEM TO BE SOLVED: To solve such a problem that it is required to provide a resistance sensor separately for measuring the internal resistance.SOLUTION: A lead-acid battery device includes a lead-acid battery, a charge control section for charging the lead-acid battery by repeating high voltage charge for applying a pulsed high voltage, and low voltage charge for applying a low voltage lower than the high voltage to the lead-acid battery alternately, and an internal resistance calculating section for calculating the internal resistance of the lead-acid battery based on the voltage change amount and current change amount of the lead-acid battery between the time when the pulsed high voltage is applied and the time when it is not applied.SELECTED DRAWING: Figure 1 【課題】内部抵抗を計測するために抵抗センサを別個に設ける必要があること。【解決手段】鉛蓄電池装置は、鉛蓄電池と、パルス状の高電圧を鉛蓄電池に印加する高電圧充電と、高電圧より低い低電圧を鉛蓄電池に印加する低電圧充電とを交互に繰り返すことによって鉛蓄電池を充電する充電制御部と、パルス状の高電圧が印加されている時とパルス状の高電圧が印加されていない時との間における、鉛蓄電池の電圧変化量及び電流変化量に基づいて、鉛蓄電池の内部抵抗を算出する内部抵抗算出部とを備える。【選択図】図１