PROBLEM TO BE SOLVED: To prevent false detection of electric leakage, when it is possible to detect both relay welding and electric leakage, by cutting off connection between a relay welding detector and an external power supply at least during electric leakage detection.SOLUTION: A relay welding detection device 100 for detecting welding of a pair of power supply side relays 101 and a ground side relay 102 provided in a pair of charge paths from an external power supply 160 having an electric leakage detector 163 to an accumulator battery 152, has a detector 103 provided on a line connecting the charge path closer to the external power supply than the power supply side relay 101 and the charge path closer to the external power supply side than the ground side relay 102, and a connection breaker 104 provided on the line in series with the detector 103. The detector 103 detects whether or not a prescribed value or more of a current flowing from the accumulator battery 152 to the detector 103, and the line is electrically cut-off by the connection breaker 104 at least when electric leakage is detected.SELECTED DRAWING: Figure 1
【課題】少なくとも漏電検出時にはリレーの溶着の検出部と外部電源との接続を遮断することにより、リレーの溶着と漏電との両方を検出可能な場合において、漏電の誤検出を防ぐこと。【解決手段】リレー溶着検出装置100は、漏電検出部163を有する外部電源160から蓄電池152への一対の充電経路に設けられた一対の電源側リレー101とグラント側リレー102との溶着を検出するリレー溶着検出装置100であって、電源側リレー101よりも外部電源側の充電経路とグラント側リレー102よりも外部電源側の充電経路とを結ぶ線路上に設けられる検出部103と、線路上に、検出部103と直列に設けられる接続遮断部104と、を有し、検出部103は、蓄電池152からの電流が検出部103に所定値以上流れたか否かを検出し、少なくとも漏電を検出する場合に、接続遮断部104により線路が電気的に遮断される。【選択図】図1
RELAY WELDING DETECTION DEVICE
リレー溶着検出装置
2018-07-05
Patent
Elektronische Ressource
Japanisch
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen |
POWER SUPPLY CONTROL DEVICE, WELDING DETECTION METHOD AND RELAY WELDING DETECTION DEVICE
Europäisches Patentamt | 2018
|Europäisches Patentamt | 2018
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