US 2024/0405308 A1 · POWER STORAGE DEVICE AND VEHICLE

Abstract

A power storage device that is less likely to be influenced by an ambient temperature is provided. The power storage device capable of being charged and discharged even in a low-temperature environment is provided. A first secondary battery capable of being charged and discharged even at low temperatures and a general second secondary battery are adjacent to each other in the power storage device. The power storage device having such a structure can use, as an internal heat source in a low-temperature environment, heat generated by charge and discharge of the secondary battery capable of being charged and discharged even at low temperatures. Specifically, the power storage device includes the first secondary battery and the second secondary battery adjacent to each other, the first secondary battery has flexibility, and a value of discharge capacity in discharge at −40° C. is higher than or equal to 50% of a value of discharge capacity in discharge at 25° C.

Claims17

Dependent claims

A power storage device comprising a first secondary battery and a second secondary battery,

wherein the first secondary battery is used in a first temperature range,
wherein the second secondary battery is used in a second temperature range,
wherein a lower limit of the first temperature range is lower than a lower limit of the second temperature range,
wherein an upper limit of the first temperature range is higher than the lower limit of the second temperature range,
wherein an upper limit of the second temperature range is higher than the upper limit of the first temperature range,
wherein the first temperature range and the second temperature range each comprise 25° C., and
wherein a value of discharge capacity when the first secondary battery is discharged at the lower limit of the first temperature range is higher than or equal to 50% of a value of discharge capacity when the first secondary battery is discharged at 25° C.

4 more elements

A power storage device comprising a first secondary battery and a plurality of second secondary batteries,

wherein the first secondary battery is configured to be bent and in contact with side surfaces of the plurality of the second secondary batteries,
wherein the first secondary battery is used in a first temperature range,
wherein each of the plurality of the second secondary batteries is used in a second temperature range,
wherein a lower limit of the first temperature range is lower than a lower limit of the second temperature range,
wherein an upper limit of the first temperature range is higher than the lower limit of the second temperature range,
wherein an upper limit of the second temperature range is higher than the upper limit of the first temperature range,
wherein the first temperature range and the second temperature range each comprise 25° C., and
wherein a value of discharge capacity when the first secondary battery is discharged at the lower limit of the first temperature range is higher than or equal to 50% of a value of discharge capacity when the first secondary battery is discharged at 25° C.

5 more elements

Dependencies are inferred from the claim text.

Power storage device and vehicle

Life of this patent

Power storage device and vehicle

Life of this patent

Abstract

Claims17