LOAD DRIVE DEVICE

• Main Author: KATO TAISHI
• Format: Patent
• Language: English; Japanese
• Published: 05.07.2018
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; RELAYS; SELECTORS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR; WEAPONS

PROBLEM TO BE SOLVED: To provide a load drive device capable of suppressing increase in the number of ports and the number of wiring harnesses.SOLUTION: A load drive device 100 comprises: a microcomputer 10 that on/off-controls a first relay 210 and a second relay 220; a fourth switching element T4 that on/off-drives the first relay 210 in response to a drive signal from the microcomputer 10; and a fifth switching element T5 that on/off-drives the second relay 220 in response to a permission signal from the microcomputer 10. Further, the load drive device 100 comprises a third switching element T3 that prohibits on-drive of the second relay 220 by the fifth switching element T5 in a case of Lo-output of the drive signal for the purpose of supplying a power from an auxiliary equipment battery 410 to a motor 300 via the first relay 210.SELECTED DRAWING: Figure 1 【課題】ポートの数及びワイヤハーネスの本数が増加することを抑制できる負荷駆動装置を提供すること。【解決手段】負荷駆動装置１００は、第１リレー２１０と第２リレー２２０のオンオフを制御するマイコン１０と、マイコン１０からの駆動信号に応じて第１リレー２１０のオンオフ駆動を行う第４スイッチング素子Ｔ４と、マイコン１０からの許可信号に応じて第２リレー２２０のオンオフ駆動を行う第５スイッチング素子Ｔ５と、を備えている。さらに、負荷駆動装置１００は、補機バッテリ４１０から第１リレー２１０を介してモータ３００への電力供給を行うために、駆動信号としてＬｏ出力されている場合、第５スイッチング素子Ｔ５による第２リレー２２０のオン駆動を禁止する第３スイッチング素子Ｔ３を備えている。【選択図】図１