Patent ID: 11936218
Assignee: YAZAKI CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A charging control method for a charging control device configured to charge a battery device, the battery device comprising:
a battery group including a first storage battery system in which a plurality of first batteries are connected in series with each other and a second storage battery system in which a plurality of second batteries are connected in series with each other, the first and second storage battery systems being connected in parallel with each other;
a plurality of system switches each configured to electrically connect and disconnect one of the first and second storage battery systems to and from the charging control device; and
a plurality of bypass switches each configured to bypass each of the plurality of first and second batteries,
the charging control method including:
controlling the system switches and the bypass switches to control charging of the battery device,
wherein the controlling includes:
determining an individual charging completion total voltage being a total voltage as a common charging target for both the first and second storage battery systems;
obtaining a first system remaining charge predetermined capacity being a target value of a remaining charge capacity of each of the plurality of first batteries and a second system remaining charge predetermined capacity being a target value of a remaining charge capacity of each of the plurality of second batteries, for each of total voltages of the first and second storage battery systems to reach the individual charging completion total voltage;
charging each of the first and second storage battery systems individually such that each of the total voltages of the first and second storage battery systems reaches the individual charging completion total voltage while making the remaining charge capacities of each of the plurality of first and second batteries uniform to be respective one of the first and second system remaining charge predetermined capacities; and
after the charging of each of the first and second storage battery systems individually, performing collective charging of the first and second storage battery systems together.