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Patent Searching and Data


Title:
POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2019047681
Kind Code:
A
Abstract:
To provide a power supply device which can secure a drive force required by an electric motor.SOLUTION: In connection form control processing, when a power accumulation part is in an off-state, a battery ECU considers that a power supply is in a pause state because an output voltage of the power accumulation part is lower than a prescribed value, and fixes connection states of power accumulation modules 61a to 61d in parallel connection. By this constitution, even if voltages of the power accumulation modules 61a to 61d differ from one another, since a current flows to a low-voltage power accumulation module side from a high-voltage power accumulation module side when the power accumulation part is in the off-state, a voltage difference between and among the power accumulation modules 61a to 61d is offset. As a result, it is avoided that charge amounts of the power accumulation modules 61a to 61d are not restored, and a drive force required by an electric motor cannot be supplied from the power accumulation part.SELECTED DRAWING: Figure 2

Inventors:
OKAMURA SAKAKI
HIROE YOSHIHIKO
TAKAMATSU NAOYOSHI
NIIMI YOSHITAKA
OHATA HIROSHI
Application Number:
JP2017170496A
Publication Date:
March 22, 2019
Filing Date:
September 05, 2017
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
B60L50/40; B60L3/00; B60L50/50; B60L53/00; B60L55/00; B60L58/00; H02J7/00
Attorney, Agent or Firm:
Sakai International Patent Office