Power storage unit and vehicle having power storage unit
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMasaru Takagi
Life of this patent
Estimating the term…
Abstract
A battery unit is constituted of a battery assembly, coolant for cooling the battery assembly, a battery case containing the battery assembly and the coolant, an electric resistivity detector for detecting the electric resistivity of the coolant, and a battery ECU that determines whether the electric resistivity detected by the electric resistivity detector is equal to or lower than 102 Ωm. If the electric resistivity is equal to or lower than 102 Ωm, the battery ECU commands a battery protection circuit to interrupt the current output from the battery assembly.
Claims20
A power storage unit, comprising:
- a power storage module;
- a coolant for cooling the power storage module;
- a casing containing the power storage module and the coolant;
- a detecting portion that detects an electric resistance of the coolant;
- and
- a determining portion that determines whether the electric resistance detected by the detecting portion is equal to or lower than a threshold,
- wherein the determining portion outputs a signal that indicates the electric resistance is reduced if the electric resistance detected by the detecting portion is equal to or lower than the threshold.
A power storage unit, comprising:
- a power storage module;
- a coolant for cooling the power storage module;
- a casing containing the power storage module and the coolant;
- a detecting portion that detects an electric resistance of the coolant;
- a notifying portion that notifies an abnormality of the power storage module depending upon the electric resistance detected by the detecting portion;
- and
- a power storage module protection portion that interrupts current output from the power storage module depending upon the electric resistance detected by the detecting portion,
- wherein the notifying portion notifies an abnormality of the power storage module if the electric resistance detected by the detecting portion is equal to or lower than a first threshold,
- wherein the power storage module protection portion interrupts the current output from the power storage module if the electric resistance detected by the detecting portion is equal to or lower than a second threshold that is equal to or lower than the first threshold.
A power storage unit, comprising:
- a power storage module;
- a coolant for cooling the power storage module;
- a casing containing the power storage module and the coolant;
- a detecting portion that detects an electric resistance of the coolant;
- a power storage amount monitoring portion that changes a target power storage amount of the power storage module depending upon the electric resistance detected by the detecting portion;
- and
- a power storage module protection portion that interrupts current output from the power storage module depending upon the electric resistance detected by the detecting portion,
- wherein the power storage amount monitoring portion raises the target power storage amount of the power storage module if the electric resistance detected by the detecting portion is equal to or lower than a first threshold,
- wherein the power storage module protection portion interrupts the current output from the power storage module if the electric resistance detected by the detecting portion is equal to or lower than a second threshold that is equal to or lower than the first threshold.
Dependencies are inferred from the claim text.