To provide a power supply device in which power is supplied from a power supply part to a load and a power storage device through a power line and in which power is supplied from the power storage device to the load through the power line, and to improve the accuracy of power line disconnection detection.SOLUTION: A power supply device 1' includes: a power storage device B which is supplied with power from a power supply part PS through a power line PL and also supplies power to an external load Lo through the power line PL; an acquisition part 31 which acquires the voltage of the power storage device B; and a detection part 32 which detects that the power line PL is disconnected when the external load Lo is in a stopped state and a dispersion value Va obtained using a plurality of voltages acquired by the acquisition part 31 is greater than a threshold value Vath.SELECTED DRAWING: Figure 7
【課題】電力供給部から電力線を介して負荷及び蓄電装置に電力が供給されるとともに蓄電装置から電力線を介して負荷に電力が供給される電力供給装置において、電力線の断線検知の精度を向上させる。【解決手段】電力供給部PSから電力線PLを介して電力が供給されるとともに電力線PLを介して外部負荷Loに電力を供給する蓄電装置Bと、蓄電装置Bの電圧を取得する取得部31と、外部負荷Loが停止状態であるときに取得部31により取得される複数の電圧を用いて求められる分散値Vaが閾値Vath以上である場合、電力線PLが断線していることを検知する検知部32とを備えて電力供給装置1´を構成する。【選択図】図7
POWER SUPPLY DEVICE AND DISCONNECTION DETECTION METHOD
電力供給装置及び断線検知方法
2023-08-02
Patent
Electronic Resource
Japanese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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 |
European Patent Office | 2023
|European Patent Office | 2024