Toyota Jidosha Kabushiki Kaisha

Masaki Hanada

Takashi Murata

Haruka Tsuruta

Satoshi Kitagawa

A power storage device includes at least one power storage cell, a heater that increases a temperature of the power storage cell, a pressing member that presses the heater against the power storage cell, and a sensor provided in the heater. The heater includes a base material and a heater wire provided on the base material. The base material includes a lead portion drawn from between the pressing member and the power storage cell. The heater wire includes a heater lead wire formed on the lead portion. The sensor is provided on the heater lead wire.

Power storage device

A power storage device includes: a power storage stack which includes a plurality of power storage cells; a heating member that heats the power storage stack; a cooling member that cools the power storage stack; a first pressing member that presses the heating member against the power storage stack; a second pressing member that presses the cooling member against the power storage stack; and a sheet member covering the bottom of the power storage stack so that an enclosed space is formed between the sheet member and the power storage stack in a cross section of the power storage stack, wherein the sheet member has a first surface and a second surface, the cooling member is disposed on the first surface, within the enclosed space, and the heating member is disposed on the second surface, on an outer side of the enclosed space.

A battery pack includes: a lower battery module; an upper battery module stacked vertically upwardly of the lower battery module; and a heating unit provided between the lower battery module and the upper battery module, the heating unit being configured to heat the lower battery module and the upper battery module. The heating unit includes a heating line disposed at a position closer to the lower battery module relative to the upper battery module in a stacking direction of the lower battery module and the upper battery module. According to such a configuration, there can be provided a battery pack in which temperature variation is suppressed between battery modules stacked upwardly/downwardly.

Battery pack

A battery pack includes a cell stack including a plurality of battery cells arrayed in one direction, a housing case housing the cell stack, and a heater configured to increase temperature of the battery cells. The heater is arranged on top of a bottom part of the housing case inside the housing case such that the heater is separated from a cell bottom part of the battery cell vertically downwardly, and a space between the bottom part of the housing case and the cell bottom part of the battery cell is a closed space in a section in a direction orthogonal to an array direction of the plurality of battery cells.

Growing community of inventors

Nagoya, Japan

Masaki Hanada