PROBLEM TO BE SOLVED: To provide a power supply device which reduces a rating current of switch means while achieving redundancy of power supply thereby enabling reduction of useless, and an electric connection box.SOLUTION: A branch circuit 11 branches a feed passage L1 of a 52 V battery 2 into n number (herein, n is an integer of three or more) of branch passages L21 to L25. A merged circuit 12 merges n number of branch passages L21 to L25 into one feed passage L3. MOSFETs Q1 to Q5 are respectively provided on n number of branch circuits L21 to L25. A rating current of the MOSFETs Q1 to Q5 is equal to or more than a rating current/(n-1) of a load (12 V load 5, 52 V load 4, ECU 7, 12 V battery 3) which receives power supply from the feed passage L3 and less than the rating current/(n-2).SELECTED DRAWING: Figure 1
【課題】電源供給の冗長化を図りつつスイッチ手段の定格電流を小さくして無駄を低減できる電源供給装置及び電気接続箱を提供する。【解決手段】分岐回路11が、52Vバッテリ2の供給路L1をn(nは3以上の整数)の分岐路L21〜L25に分岐する。合流回路12が、nの分岐路L21〜L25を1つの供給路L3に合流する。MOSFETQ1〜Q5が、nの分岐路L21〜L25上にそれぞれ設けられる。MOSFETQ1〜Q5の定格電流は、供給路L3から電源供給を受ける負荷(12V負荷5、52V負荷4、ECU7、12Vバッテリ3)の定格電流/(n−1)以上、かつ、定格電流/(n−2)未満である。【選択図】図1
POWER SUPPLY DEVICE AND ELECTRIC CONNECTION BOX
給電装置及び電気接続箱
2017-01-26
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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