CHARGING/DISCHARGING DEVICE AND BATTERY CONNECTION DEVICE

• Main Authors: ISHIKAWA KEISUKE, ISHIGAKI MASAKI, SHIGEUCHI KOJI, TAHARA KOSUKE
• Format: Patent
• Language: English; Japanese
• Published: 19.01.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

To perform bidirectional power transmission between a secondary battery and a power supply network depending on a situation of the power supply network.SOLUTION: A charging/discharging connector 16 connected to a DC power network 14 performs non-contact power transmission with a battery unit 18. The charging/discharging connector 16 comprises a charging/discharging switching circuit 40 for performing the non-contact power transmission. The charging/discharging connector 16 calculates a transmission power target value for a battery 26 on the basis of DC grid voltage given from the DC power network 14, performs switching of the charging/discharging switching circuit 40 according to the transmission power target value, generates a switching signal for switching control of the battery unit 18 according to the transmission power target value, and transmits the switching signal to the battery unit 18 using non-contact communication.SELECTED DRAWING: Figure 2 【課題】本発明は、二次電池と電力供給網との間で、電力供給網の状況に応じた双方向電力伝送を行うことを目的とする。【解決手段】充放電コネクタ１６は直流電力網１４に接続されており、電池ユニット１８との間で非接触電力伝送を行う。充放電コネクタ１６は、非接触電力伝送をするための充放電スイッチング回路４０を備えている。充放電コネクタ１６は、直流電力網１４から与えられる直流グリッド電圧に基づいて、電池２６に対する伝送電力目標値を求め、伝送電力目標値に応じて充放電スイッチング回路４０のスイッチングを行い、電池ユニット１８をスイッチング制御するスイッチング信号を伝送電力目標値に応じて生成し、スイッチング信号を非接触通信によって電池ユニット１８に送信する。【選択図】図２