CHARGE/DISCHARGE SYSTEM

• Main Authors: TOYODA KAZUHO, HOSOMI TAKAYA, TANABE HIROTARO, HOTTA TAKESHI, TAKAHASHI TAKASHI, MURAKAMI TAKURO, ITAYAMA KOJI
• Format: Patent
• Language: English; Japanese
• Published: 20.05.2021
• 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

To provide a charge/discharge system to which a plurality of electric vehicles are connected, the charge/discharge system requiring no complex control and configuration.SOLUTION: A charge/discharge system comprises: a trunk line 1 that connects a commercial power supply P on an upstream side to a load L on a downstream side; and a plurality of charge/discharge devices 2a, 2b, 2c connected to the trunk line independently of one another. The respective charge/discharge devices include: charge/discharge device bodies 21a, 21b, 21c connected to electric vehicles EA, EB, EC, respectively and capable of performing charging/discharging on the connected electric vehicles EA, EB, EC; connection lines 3a, 3b, 3c that connect the trunk line to the charge/discharge device bodies, respectively; and electrification detection means 4a, 4b, 4c attached to the trunk line. The charge/discharge device bodies can perform normal operation in which work power is supplied from the trunk line side and emergency operation in which work power is supplied from the electric vehicles and perform the normal operation only in a state in which electrification is detected by the electrification detection means. Electrification detection means of an (N+1)-th charge/discharge device from the upstream on the trunk line (N is an integer of 1 or more) is located on the downstream side of a connection portion, with respect to the trunk line, of a connection line of an N-th charge/discharge device.SELECTED DRAWING: Figure 1 【課題】複数台の電気自動車が接続される、複雑な制御や構成を要しない充放電システムを提供する。【解決手段】充放電システムにおいて、上流側の商用電源Ｐと下流側の負荷Ｌとを接続する幹線１と、幹線に対して互いに独立に接続される複数の充放電器２ａ、２ｂ、２ｃと、を備える。各充放電器は、電気自動車ＥＡ、ＥＢ、ＥＣを接続して充放電可能な充放電器本体２１ａ、２１ｂ、２１ｃと、幹線と充放電器本体とを接続する接続線３ａ、３ｂ、３ｃと、幹線に取り付けられる通電検知手段４ａ、４ｂ、４ｃと、を有する。充放電器本体は、稼働電力が幹線側から供給される通常運転と電気自動車から供給される非常運転が可能であり、通電検知手段が通電を検知した状態でのみ通常運転する。幹線の上流側からＮ＋１番目（Ｎは１以上の整数）の充放電器の通電検知手段は、Ｎ番目の充放電器の接続線の幹線に対する接続部よりも下流側に位置している。【選択図】図１