| 摘要 |
The controller calculates a first limit based on received information about the battery packs and the schedule for charging and discharging plan, and supplies the first limit which serves as a control command to a master battery management unit (BMU), a master BMU receives the first limit. The master BMU sets and distributes the second limit to each one of local battery management function blocks in the battery packs. As a result, each BMU receives the second limit respectively. Then, the each BMU supplies the third limit to a bidirectional power source circuit, respectively, based on failure information FAIL and capacity information SOC of the battery in the battery pack. |
| 主权项 |
1. A battery system comprising:
a plurality of battery packs; a DC line to which the battery packs are connected; and a controller which sends control commands to the battery packs, wherein each one of the battery packs includes: a battery; a bidirectional power supply circuit which charges and discharges the battery; and a battery management unit which detects failures of the battery and state of charge of the battery, and wherein one battery pack selected from the battery packs has the battery management unit which has a central management function block to perform a master function, and wherein each one of remaining battery packs, which does not perform the master function, out of the battery packs has the battery management unit which is configured to receive the control command from the controller through the battery management unit for master function, and wherein the battery management unit for master function is configured to send battery pack information relating to the failure information of the plurality of the battery packs and the state of charge of the battery packs to the controller, and wherein the controller is configured to supply information relating to a first limit, which is the control command, to the battery management unit for master function based on the battery pack information received and control plan for the whole system controlled by the controller, and wherein the information relating to the first limit includes information for limiting magnitude of charging or discharging of the battery in the battery packs, and wherein the battery management unit for master function is configured to receive the information relating to the first limit and to distribute information relating to second limits to each one of local management function blocks in the battery packs based on the first limit, and wherein each one of the local management function blocks in the battery packs is configured to receive distribution of the information relating to the second limit and to supply information relating to a third limit to the bidirectional power supply circuit in corresponding one of the battery packs based on the failure information or state of charge of the battery of corresponding one of the battery packs. |
