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US 2026/0246284 A1Published application
Battery charging system, battery charging control method, and battery charging control device
AssigneeHitachi, Ltd.
InventorsSatoru KANEKO, Kengo KUMANO, Astushi SHIMADA, Shogo NAMBA, Akeshi TAKAHASHI
Life of this patent
Estimating the term…
Abstract
The power output from multiple power generation modules can be effectively managed by a battery charging control device that includes a major control unit, which increases the converter's output power in the main module by subtracting the battery voltage from a predetermined battery voltage command value, and a secondary control unit that adjusts each secondary module's power output to closely match its respective secondary power command value.
Claims10
A battery charging system comprising:
- a plurality of power generation modules each including an engine, a generator driven by the engine, and a converter that converts a voltage output from the generator into a charging voltage and supplies the charging voltage to a battery to be charged;
- and
- a battery charging control device that controls the power generation module, wherein
- the battery charging control device includes:
- a function assignment unit that selects one of the power generation modules as a major module according to predicted charging power that is power predicted to be supplied to the battery, and selects one or a plurality of the power generation modules other than the major module to be used for charging the battery as a secondary module;
- a power command unit that outputs a secondary power command value that is a command value of power generated by each of the secondary modules;
- a major control unit that increases output power of the converter in the major module as a result obtained by subtracting a battery voltage, which is a voltage of the battery, from a predetermined battery voltage command value for the major module increases;
- and
- a secondary control unit that brings power output from each of the secondary modules close to the corresponding secondary power command value.
6 more elements
A battery charging control method to be applied to a battery charging system including:
- a plurality of power generation modules each including an engine, a generator driven by the engine, and a converter that converts a voltage output from the generator into a charging voltage and supplies the charging voltage to a battery to be charged;
- and a battery charging control device that controls the power generation module, the method comprising:
- a function assignment procedure of selecting one of the power generation modules as a major module according to predicted charging power that is power predicted to be supplied to the battery, and selecting one or a plurality of the power generation modules other than the major module to be used for charging the battery as a secondary module;
- a power command procedure of outputting a secondary power command value that is a command value of power generated by each of the secondary modules;
- a major control procedure of increasing output power of the converter in the major module as a result obtained by subtracting a battery voltage, which is a voltage of the battery, from a predetermined battery voltage command value for the major module increases;
- and
- a secondary control procedure of bringing power output from each of the secondary modules close to the corresponding secondary power command value.
4 more elements
A battery charging control device comprising:
- a function assignment unit that, in order to control a plurality of power generation modules, each of which including an engine, a generator driven by the engine, and a converter that converts a voltage output from the generator into a charging voltage and supplies the charging voltage to a battery to be charged, selects one of the power generation modules as a major module according to predicted charging power that is power predicted to be supplied to the battery, and selects one or a plurality of the power generation modules other than the major module to be used for charging the battery as a secondary module;
- a power command unit that outputs a secondary power command value that is a command value of power generated by each of the secondary modules;
- a major control unit that increases output power of the converter in the major module as a result obtained by subtracting a battery voltage, which is a voltage of the battery, from a predetermined battery voltage command value for the major module increases;
- and
- a secondary control unit that brings power output from each of the secondary modules close to the corresponding secondary power command value.
2 more elements
Dependencies are inferred from the claim text.