Abstract: An electrified vehicle in which a plurality of replaceable battery packs are arranged in a vehicle cabin, comprising: a plurality of antennas arranged in the vehicle cabin; and a control device that, when the plurality of antennas detect a radio wave transmitted by a communication device provided in each of the plurality of replaceable battery packs from a pedestal position of a battery terminal base for connecting at least one of the plurality of replaceable battery packs to electrified vehicle, identifies an arrangement position of a particular replaceable battery pack connected to electrified vehicle via the battery terminal base from among the plurality of replaceable battery packs based on a radio wave strength of the radio wave.

Abstract: A battery electric vehicle includes: a traction motor; an inverter driving the motor; a first battery; an electric device running on electric power from the first battery; a detachable portable second battery; a first connecting and disconnecting device connecting and disconnecting a power line connected to the inverter and the first battery to and from each other; a second connecting and disconnecting device connecting and disconnecting the power line and the second battery to and from each other; and a control device controlling the first connecting and disconnecting device and the second connecting and disconnecting device. When a system startup instruction is given, the control device controls the first and second connecting and disconnecting devices so that the second battery is preferentially connected to the power line over the first battery when a temperature of the second battery is within an allowable temperature range of the second battery.

Abstract: An estimation device configured to estimate a charge rate of a battery includes a voltage sensor configured to detect a voltage of the battery, a temperature sensor configured to detect a temperature of the battery, and a processing circuit. The processing circuit is connected to the voltage sensor and the temperature sensor and is configured to execute, while a vehicle is parked, an estimation process of estimating the charge rate of the battery based on a detection voltage and a detection temperature. The detection voltage is detected by the voltage sensor. The detection temperature is detected by the temperature sensor.

Abstract: An estimation device configured to estimate a charge rate of a battery includes a voltage sensor configured to detect a voltage of the battery, a temperature sensor configured to detect a temperature of the battery, and a processing circuit. The processing circuit is connected to the voltage sensor and the temperature sensor and is configured to execute, while a vehicle is parked, an estimation process of estimating the charge rate of the battery based on a detection voltage and a detection temperature. The detection voltage is detected by the voltage sensor. The detection temperature is detected by the temperature sensor.

Abstract: A vehicle includes an electric power reception unit that is configured to receive electric power that is required to activate a system of the vehicle, from a portable device that is portable, the portable device including an electrical storage device provided therein, and the portable device being configured to carry out at least one of authentication of a user of the vehicle and issuance of a command to activate the system.

Abstract: A power supply device includes: a first battery; a plurality of first temperature sensors that is attached to the first battery; a second battery that is provided adjacent to the first battery; and a plurality of second temperature sensors that is attached to the second battery. A high-temperature abnormality of the second battery is diagnosed using a second abnormality diagnosis method based on temperatures from the plurality of second temperature sensors when a high-temperature abnormality has been detected in the first battery using a first abnormality diagnosis method different from the second abnormality diagnosis method based on temperatures from the plurality of first temperature sensors.

Abstract: There is provided a vehicle comprising a power storage device; a connecting portion configured to be connectable with an external power source; a converter configured to be connected with the connecting portion and with the power storage device; and a control device configured to control the converter. When the external power source is connected with the connecting portion, the control device performs charging control to control the converter, such that electric power from the external power source is subjected to voltage conversion and is then supplied to the power storage device. On completion of charging of the power storage device, the control device starts a system by using electric power from the power storage device after disconnection of the converter from the external power source.

Abstract: There is provided a vehicle comprising a power storage device; a connecting portion configured to be connectable with an external power source; a converter configured to be connected with the connecting portion and with the power storage device; and a control device configured to control the converter. When the external power source is connected with the connecting portion, the control device performs charging control to control the converter, such that electric power from the external power source is subjected to voltage conversion and is then supplied to the power storage device. On completion of charging of the power storage device, the control device starts a system by using electric power from the power storage device after disconnection of the converter from the external power source.

Abstract: A vehicle comprises a first power storage device; a second power storage device configured to have a lower rated voltage than a rated voltage of the first power storage device; a DC-DC converter configured to step down a voltage of electric power of a high voltage-side power line which the first power storage device is connected with and to supply the electric power of the stepped-down voltage to a low voltage-side power line which the second power storage device is connected with; a first auxiliary machine connected with the low voltage-side power line and configured such as to be required to operate in a system off-state; a second auxiliary machine connected with the low voltage-side power line and configured such as not to be required to operate in the system off-state; and a switch configured to disconnect the second auxiliary machine from the low voltage-side power line.

Abstract: A vehicle includes an electric power reception unit that is configured to receive electric power that is required to activate a system of the vehicle, from a portable device that is portable, the portable device including an electrical storage device provided therein, and the portable device being configured to carry out at least one of authentication of a user of the vehicle and issuance of a command to activate the system.

Abstract: At a cold start of an engine, a hybrid vehicle is configured to perform first cranking control that controls a starter and an electric power transmission device, such that the engine is cranked by the starter using electric power from a first power storage device and a second power storage device, or to perform second cranking control that controls a motor generator and the electric power transmission device, such that the engine is cranked by the motor generator using the electric power from the first power storage device and the second power storage device.