VEHICULAR POWER SUPPLY CIRCUIT

• Main Authors: ISHII KENICHI, SATO HIROSHI, YAMADA RENA
• Format: Patent
• Language: English; Japanese
• Published: 13.08.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

To achieve the backup of power supply for an accessory without adding a dedicated backup power supply for the accessory.SOLUTION: A high voltage battery 30 includes a first partial battery 30A including battery cells C of a part of a plurality of battery cells C on a positive electrode terminal side of the high voltage battery 30, and a second partial battery 30B including other battery cells C of the plurality of battery cells C. A first DC-DC converter 31, which performs a voltage conversion of an output voltage of the first partial battery 30A and outputs the converted voltage to an accessory 41, is connected to the first partial battery 30A. A second DC-DC converter 32, which performs a voltage conversion of an output voltage of the second partial battery 30B and outputs the converted voltage to the accessory 41, is connected to the second partial battery 30B. The second partial battery 30B is connected to a protection accessory 41P of the accessory 41 without passing through the first DC-DC converter 31 and the second DC-DC converter 32.SELECTED DRAWING: Figure 1 【課題】補機のバックアップ用の専用電源を追加することなく、補機に対する電力供給のバックアップを実現する。【解決手段】高圧バッテリ３０は、複数のバッテリセルＣのうちの高圧バッテリ３０の正極端子側の一部のバッテリセルＣからなる第１分電池３０Ａ、及び複数のバッテリセルＣのうちの他のバッテリセルＣからなる第２分電池３０Ｂとで構成されている。第１分電池３０Ａには、当該第１分電池３０Ａの出力電圧を電圧変換して補機４１に出力する第１ＤＣＤＣコンバータ３１が接続されている。第２分電池３０Ｂには、当該第２分電池３０Ｂの出力電圧を電圧変換して補機４１に出力する第２ＤＣＤＣコンバータ３２が接続されている。第２分電池３０Ｂは、第１ＤＣＤＣコンバータ３１及び第２ＤＣＤＣコンバータ３２を介することなく、補機４１のうちの保護補機４１Ｐに接続されている。【選択図】図１