POWER SUPPLY SYSTEM

• Main Author: SHIRASAKI YOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 11.01.2018
• Subjects: BASIC ELECTRIC ELEMENTS; 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; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To obtain a power supply system 1 capable of detecting presence/absence of connection of a charge/discharge connector 3 without using a charge/discharge connector connection confirmation signal.SOLUTION: A power supply system 1 has a charger/discharger 5 for exchanging power with a drive on-vehicle battery 22 being a secondary battery of an electric automobile 2 via a charge/discharge connector 3. The system includes: a first connection detector 14 for detecting a connection state of the charge/discharge connector 3; a CAN circuit 15 for performing data communication according to a CAN communication protocol between the power supply system 1 and the electric automobile 2; a second connection detector 100 for measuring a termination resistance value of a CAN communication line 37 connected to the CAN circuit 15; and a control section 16 for determining the presence/absence of connection of the charge/discharge connector 3 and controlling the charger/discharger 5 through the use of a first connection detection signal 14a to be output from the first connection detector 14, a second connection detection signal 100a to be output from the second connection detector 100, and data of the data communication to be performed by the CAN circuit.SELECTED DRAWING: Figure 1 【課題】充放電コネクタ接続確認信号を用いることなく充放電コネクタ３の接続の有無を検出可能な電力供給システム１を得ること。【解決手段】電気自動車２の蓄電池である駆動用車載電池２２と充放電コネクタ３を介して電力の授受を行う充放電器５を有する電力供給システム１であって、充放電コネクタ３の接続状態を検出する第１の接続検出器１４と、電力供給システム１と電気自動車２との間でＣＡＮ通信プロトコルによるデータ通信を行うＣＡＮ回路１５と、ＣＡＮ回路１５に接続されたＣＡＮ通信線３７の終端抵抗値を測定する第２の接続検出器１００と、第１の接続検出器１４が出力する第１の接続検出信号１４ａ、第２の接続検出器１００が出力する第２の接続検出信号１００ａ及びＣＡＮ回路が行うデータ通信のデータを用いて、充放電コネクタ３の接続の有無の判定及び充放電器５の制御を行う制御部１６とを備える。【選択図】図１