CONTROL METHOD FOR POWER SUPPLY SYSTEM OF MOBILE BODY, POWER SUPPLY SYSTEM OF MOBILE BODY, AND POWER STORAGE DEVICE

• Main Author: SHIRAISHI TAKAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 14.10.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

To reduce a risk that power supply to a mobile body is stopped even if all power storage devices that are connected in parallel malfunction.SOLUTION: A control method for a power supply system 30 of a vehicle 10 includes: a first step of permitting or prohibiting interruption of current in each of power storage device 50 on the basis of a normality/abnormality combination of the power storage devices 50 such that a current interruption device 53 for at least one power storage devices 50 is in a powered state; and a second step of bringing the current interruption device 53 into an interrupted state in a case where a BMU 100 of the power storage device 50 for which current interruption has been permitted has detected an abnormality in the power storage device 50 at the time point of the permission of current interruption or in a case where the BMU 100 detects an abnormality in the power storage device 50 after the permission of current interruption.SELECTED DRAWING: Figure 9 【課題】並列に接続された複数の蓄電装置が全て異常になっても移動体負荷に電力供給されなくなるリスクを低減すること。【解決手段】車両１０の電源システム３０の制御方法であって、各蓄電装置５０の正常、異常の組み合わせに基づいて、少なくとも１つの蓄電装置５０の電流遮断装置５３が通電状態になるように各蓄電装置５０に対して電流の遮断を許可又は禁止する第１ステップと、電流の遮断を許可された蓄電装置５０のＢＭＵ１００が、電流の遮断を許可された時点で当該蓄電装置５０の異常を検出している場合、又は、電流の遮断を許可された後に当該蓄電装置５０の異常を検出した場合に電流遮断装置５３を遮断状態にする第２ステップと、を含む。【選択図】図９