PROBLEM TO BE SOLVED: To determine a fuse life with high accuracy on the basis of a fuse usage state, extract fuse performance to a maximum before fuse life approaches and suppress the fuse performance when the fuse life approaches.SOLUTION: A vehicular power supply apparatus 1, having a battery 10 for supplying an inverter 30 with power and a fuse 20 connected to the battery 10 and melting down when a current exceeding a permissible current is applied, includes: temperature estimation means 51 for estimating a temperature of the fuse 20 on the basis of a current applied to the fuse 20; deterioration amount integration means 52 for integrating a deterioration amount when a current applied to the fuse 20 by calculating the deterioration amount of the fuse 20 on the basis of an estimated temperature Th when the estimated temperature Th estimated by the temperature estimation means 51 becomes a given temperature or higher; and current limit means 53 for limiting a current applied to the fuse 20 when an integrated deterioration amount integrated by the deterioration amount integration means 52 becomes a given amount Fa or higher.SELECTED DRAWING: Figure 1

    【課題】ヒューズ使用状態に基づきヒューズ寿命を高精度で判定し、ヒューズ寿命に近づくまではヒューズ性能を最大限発揮するとともに、ヒューズ寿命が近づくとヒューズ性能を抑制することである。【解決手段】インバータ30に電力を供給するバッテリ10と、このバッテリ10に接続され、許容電流を越えた電流が流れたときに溶断するヒューズ20とを備える車両の電源装置1であって、ヒューズ20の通電電流に基づいてヒューズ20の温度を推定する温度推定手段51と、温度推定手段51により推定された推定温度Thが所定温度Ta以上となったときに、推定温度Thに基づいてヒューズ20の劣化量を求めて、ヒューズ20の通電時における劣化量を積算する劣化量積算手段52と、劣化量積算手段52により積算された積算劣化量Fhが所定量Fa以上となったときに、ヒューズ20の通電電流を制限する電流制限手段53とを備えた。【選択図】図1


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    Titel :

    VEHICULAR POWER SUPPLY APPARATUS


    Weitere Titelangaben:

    車両の電源装置


    Beteiligte:
    UEDA MASAYUKI (Autor:in)

    Erscheinungsdatum :

    2017-06-15


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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