Electric motor vehicle and battery pack

Patent metadata

Field	Value
Publication number	US-9937801-B2
Application number	US-201615160510-A
Country	US
Kind code	B2
Filing date	May 20, 2016
Priority date	May 25, 2015
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

An electric motor vehicle including: a high-output assembled battery; a high-capacity assembled battery having a larger capacity and a smaller output than those of the high-output assembled battery; and an inverter, and the electric motor vehicle is equipped with a PCU that transmits and receives electric power to and from the high-output assembled battery and the high-capacity assembled battery, a first wiring that connects the high-output assembled battery to the PCU, and a second wiring that connects the high-capacity assembled battery to the PCU, and is shorter than the first wiring.

First claim

What is claimed is:

1. An electric motor vehicle comprising:
a high-output battery;
a high-capacity battery having a larger capacity and a smaller output than a capacity and an output of the high-output battery;
an electric power controller that includes an inverter, the electric power controller being configured to transmit and receive electric power to and from the high-output battery and the high-capacity battery;
a first wiring that connects the high-output battery to the electric power controller;
a second wiring that connects the high-capacity battery to the electric power controller, the second wiring being shorter than the first wiring; and
a charging wiring that connects the high-capacity battery to a charging inlet,
wherein the high-capacity battery and the high-output battery are disposed under a floor panel of the vehicle while the high-capacity battery and the high-output battery are housed in an identical case,
wherein a location of the high-capacity battery is closer to the electric power controller than a location of the high-output battery,
wherein the electric power controller, the high-capacity battery, and the high-output battery are disposed in this order in one direction, and
wherein the charging inlet is disposed on a same side of the vehicle as the electric power controller.

2. The electric motor vehicle according to claim 1 , wherein
at least a portion of the electric power which is transmitted and received from the high-output battery and the high-capacity battery is used for driving the electric motor vehicle,
wherein of this portion of the electric power, a higher percentage of said portion of electric power is outputted from the high-capacity battery than from the high-output battery.

3. The electric motor vehicle according to claim 1 , wherein
the electric power controller is disposed more frontward than a vehicle cabin, and the high-capacity battery is disposed more frontward than the high-output battery in the case.

4. The electric motor vehicle according to claim 3 , wherein
the electric power controller is provided outside the case,
the electric motor vehicle comprises a first terminal that is electrically connected to the electric power controller and a second terminal that is electrically connected to a charger, and
the first terminal and the second terminal are disposed at a front end of the case.

Assignees

• Toyota Motor Co Ltd
• Toyota Jidoshokki Kk

Inventors

• Kusumi Hidetoshi
• Ohgitani Ikkei

Classifications

• B60L50/66 Primary

  Arrangements of batteries · CPC title

• B60K2001/0438

  Arrangement under the floor · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M2010/4271

  Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing · CPC title

• B60K1/04 Primary

  of the electric storage means for propulsion · CPC title