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US 11,635,469 B2Granted
Power supply device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKazuo Ootsuka, Shuji Tomura, Naoki Yanagizawa, Kyosuke Tanemura, Shigeaki Goto, Junta Izumi, Kenji Kimura
Life of this patent
Estimating the term…
Abstract
Provided is a power supply device which includes a plurality of battery modules each having a secondary battery and in which the battery modules are connected in series with one another according to a gate driving signal from a controller. An SOC control target value that is a target value for states-of-charge of the battery modules is changed according to the number of the battery modules that are available to be connected in series.
Claims5
A power supply device comprising:
- a plurality of battery modules wherein the plurality is a given number of battery modules, each battery module having a secondary battery;
- a controller configured to connect the battery modules in series with one another according to a gate driving signal, and to change an SOC control target value that is a target value for states-of-charge of the battery modules according to the given number of the battery modules that are available to be connected in series;
- and
- a disconnecting device that forcibly isolates the battery module from a series connection regardless of the gate driving signal;
- wherein the controller is configured to exclude, from the battery modules that are available to be connected in series, the battery module that has been forcibly isolated from the series connection by the disconnecting device;
- and
- wherein:
- the controller is configured to determine whether or not the battery module is in a failed state by using state information showing a state of the battery module;
- and
- the disconnecting device forcibly isolates, from the series connection, the battery module that has been determined to be in the failed state.
7 more elements
A power supply device comprising:
- a plurality of battery modules wherein the plurality is a given number of battery modules, each battery module having a secondary battery;
- and
- a controller configured to connect the battery modules in series with one another according to a gate driving signal, and to change an SOC control target value that is a target value for states-of-charge of the battery modules according to the given number of the battery modules that are available to be connected in series;
- wherein the controller is configured to change the SOC control target value such that a total value of voltages of the battery modules that are available to be connected in series becomes equal to or higher than a target output voltage value of the power supply device.
1 more element
Dependencies are inferred from the claim text.