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Power storage system

一种蓄电系统、电池的技术，应用在蓄电系统领域，能够解决充电效率降低、内阻增大等问题

Inactive Publication Date: 2016-10-12
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because, when the battery temperature is low, the internal resistance increases and the charging efficiency decreases

Method used

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Embodiment Construction

[0028] An embodiment of the present invention will be described below.

[0029] Figures 1 to 8 A first embodiment of the invention is shown. figure 1 is a block diagram showing the structure of the battery system mounted on the vehicle of the present embodiment. The battery system may be mounted on a vehicle, such as a plug-in hybrid vehicle having a battery charged with power from an external power source, or an electric vehicle.

[0030] The battery system of this embodiment includes a charging / discharging system and an external charging system. In this charging / discharging system, DC power of a battery 1 is supplied to a motor generator (MG) through an inverter 4 , and the battery 1 is charged with renewable energy during braking of the vehicle. In the external charging system, a temperature regulator is provided for the battery 1 , and the battery 1 is charged with electric power from an external power source 23 .

[0031] Such as figure 1 As shown, battery 1 is a ba...

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PUM

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Abstract

A power storage system for a vehicle includes a battery, a temperature sensor, a battery heater, a charger, and a controller. The battery is configured to supply electric power to a motor for traveling of the vehicle, and configured to be charged with external power supplied from an external power supply. The temperature sensor is configured to detect a temperature of the battery. The battery heater is configured to raise the temperature of the battery. The charger is configured to be connectable with the external power supply, and deliver the external power to the battery and the battery heater, respectively. The controller is configured to perform charge control. The charge control is a control that charges the battery with the external power. The controller is configured to store a mapping. The map specifies, for each temperature of the battery, a ratio of a temperature-elevating power supplied to the battery heater to a maximum power of the external power at the time when a charging time is minimized. The controller is configured to calculate the ratio, by using the mapping, from the temperature of the battery measured at the time when charging is started. The controller is configured to perform temperature regulation control during charging, by using the temperature-elevating power corresponding to the calculated ratio. The temperature regulation control is a control that supplies a part of the external power to the battery heater during charging so as to raise the temperature of the battery.

Description

technical field [0001] The present invention relates to a power storage system of a vehicle including a battery that supplies electric power to an electric motor and that can be charged with electric power supplied from an external power source. Background technique [0002] In a plug-in hybrid vehicle or an electric vehicle, a battery that supplies electric power to an electric motor for running the vehicle can be charged with electric power supplied from an external power source (external charging). It is well known that as the temperature of the battery (battery temperature) drops, the charging time is extended or increased. This is because, when the temperature of the battery is low, internal resistance increases, and charging efficiency decreases. [0003] In the system described in Japanese Patent Application Publication No. 2012-191783 (JP 2012-191783 A), when a timer is used to externally charge the battery, part of the charging power is used by the heater as warmin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18H02J7/00H01M10/44H01M10/615H01M10/63
CPCH02J7/0021H01M10/615H01M10/63B60L53/00B60L58/27B60L53/14B60L50/53H01M10/443B60L2240/545H01M10/486B60L2240/445B60L2240/547B60L2240/549H01M10/633H01M2220/20H01M10/625H01M10/6571B60L53/20B60L58/13B60L58/24Y10S903/903B60L58/15Y02T10/70Y02T10/7072Y02T90/14Y02E60/10B60L2210/10
Inventor 村田崇
Owner TOYOTA JIDOSHA KK