Distributed power supply system and control method
AssigneeHuawei Digital Power Technologies Co., Ltd.
InventorsYezheng ZHANG, Zongzhe LIU
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Abstract
A distributed power supply system and a control method. The system includes a battery management system and M battery units, where the battery unit includes a battery management unit and a cell. The battery management system is configured to communicate with the M battery management units to obtain M pieces of state information and send an instruction to a target battery management unit in the M battery management units based on the M pieces of state information. The target battery management unit is configured to control, according to the instruction, voltage balancing for a battery unit in which the target battery unit is located.
Claims18
A distributed power supply system, comprising:
- a battery management system and M battery units, wherein each of the battery units comprises a cell and a battery management unit, the battery management system communicates with the M battery management units of the M battery units in a wired or wireless manner, and M is an integer greater than 1;
- any one of the battery management units is configured to obtain state information of a cell in a battery unit in which the any battery management unit is located;
- and
- the battery management system is configured to:
- communicate with the M battery management units to obtain M pieces of state information;
- determine a to-be-balanced target battery unit from the M battery units based on the M pieces of state information;
- and
- send an instruction to a target battery management unit provided in the target battery unit;
- and
- the target battery management unit is configured to control, according to the instruction, voltage balancing for a cell in a battery unit in which the target battery management unit is located.
A control method, applied to a distributed power supply system, wherein the distributed power supply system comprises a battery management system and M battery units, each of the battery units comprises a cell and a battery management unit, the battery management system communicates with the M battery management units of the M battery units in a wired or wireless manner, and M is an integer greater than 1;
- and the method comprises:
- obtaining, based on the M battery management units, state information of cells in respective battery units in which the M battery management units are located;
- obtaining M pieces of state information based on communication between the battery management system and the M battery management units;
- determining a to-be-balanced target battery unit from the M battery units based on the M pieces of state information;
- sending an instruction to a target battery management unit provided in the target battery unit;
- and
- controlling, according to the instruction, voltage balancing for a cell in the battery unit in which the target battery management unit is located.
Dependencies are inferred from the claim text.