Battery system component layout structure for electrically driven vehicle

• US 9,090,218 B2
• Filed: 01/16/2013
• Issued: 07/28/2015
• Est. Priority Date: 01/17/2012
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Karashima, Ryusuke
• Primary Examiner(s): Shriver, II, J. Allen
• Assistant Examiner(s): JOHNS, HILARY LYNN
• Application Number:
  US14/370,275
• Publication Number:
  US 20140374181A1
• Time in Patent Office: 923 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B60K 1/04 of the electric storage means for propulsion exchanging batteries for electric propulsion of vehicles B60L53/80; for auxiliary purposes only B60R16/04; supplying batteries to, or removing batteries from, vehicles B60S5/06
• CPC Class Codes: B60K 11/06 with air cooling
• CPC Class Codes: B60K 2001/003 with means for cooling the electrical propulsion units
• CPC Class Codes: B60K 2001/005 the electric storage means
• CPC Class Codes: B60K 2001/0416 Arrangement in the rear part of the vehicle
• CPC Class Codes: B60K 5/04 with the engine main axis, e.g. crankshaft axis, transversely to the longitudinal centre line of the vehicle
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/50 using propulsion power supplied by batteries or fuel cells
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: B60L 58/26 by cooling
• CPC Class Codes: B60R 16/02 electric constitutive elements
• CPC Class Codes: B60R 16/04 Arrangement of batteries
• CPC Class Codes: B60Y 2306/01 Reducing damages in case of crash, e.g. by improving battery protection
• CPC Class Codes: H01M 10/60 Heating or cooling; Temperature control
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A vehicle battery system component layout structure is basically provided with a center room, a rear room, a vehicle propulsion battery and an auxiliary battery. The center room of a vehicle is configured to seat a driver and a passenger. The rear room of the vehicle is disposed rearward of the center room. The vehicle propulsion battery is disposed in a vehicle front side space in the rear room. The auxiliary battery is disposed in a vehicle rear side space in the rear room rearward of the propulsion battery and in a position in which the auxiliary battery overlaps with the propulsion battery in a vehicle longitudinal direction as viewed from a rear end of the vehicle.

Claims

1. A vehicle battery system component layout structure comprising:

a center room of a vehicle configured to seat a driver and a passenger;

a rear room of the vehicle disposed rearward of the center room;

a vehicle propulsion battery disposed in a vehicle front side space in the rear room; and

an auxiliary battery disposed in a vehicle rear side space in the rear room rearward of the propulsion battery and in a position in which the auxiliary battery overlaps with the propulsion battery in a vehicle longitudinal direction as viewed from a rear end of the vehicle, the auxiliary battery including a first auxiliary battery and a second auxiliary battery,

the first auxiliary battery only providing power to a starter motor of an engine, and

the second auxiliary battery only providing power to auxiliary equipment other than the starter motor.

2. The vehicle battery system component layout structure as claimed in claim 1, wherein

the rear room includes a room floor surface defining a floor surface of the rear room, the room floor surface includes a first floor surface on the vehicle front side space and a second floor surface provided with a ground surface clearance lower than the first floor surface through a stepped wall surface extending from the first floor surface, and the propulsion battery is mounted on the first floor surface and the auxiliary battery is mounted on the second floor surface.

3. The vehicle battery system component layout structure as claimed in claim 1, wherein

the propulsion battery includes a vehicle upper space that is provided with an electrical component to manage charging and discharging of the propulsion battery and the auxiliary battery.

5. The vehicle battery system component layout structure as claimed in claim 2, wherein

the propulsion battery includes a vehicle upper space that is provided with an electrical component to manage charging and discharging of the propulsion battery and the auxiliary battery.

6. The vehicle battery system component layout structure as claimed in claim 5, wherein

the first auxiliary battery and the second auxiliary battery are arranged side by side in a vehicle width direction at the same vehicle longitudinal position in the vehicle rear side space of the propulsion battery.

7. The vehicle battery system component layout structure as claimed in claim 2, wherein

the first auxiliary battery and the second auxiliary battery are arranged side by side in a vehicle width direction at the same vehicle longitudinal position in the vehicle rear side space of the propulsion battery.

8. The vehicle battery system component layout structure as claimed in claim 3, wherein

the first auxiliary battery and the second auxiliary battery are arranged side by side in a vehicle width direction at the same vehicle longitudinal position in the vehicle rear side space of the propulsion battery.

4. A vehicle battery system component layout structure comprising:

a center room of a vehicle configured to seat a driver and a passenger;

a rear room of the vehicle disposed rearward of the center room;

a vehicle propulsion battery disposed in a vehicle front side space in the rear room; and

an auxiliary battery disposed in a vehicle rear side space in the rear room rearward of the propulsion battery and in a position in which the auxiliary battery overlaps with the propulsion battery in a vehicle longitudinal direction as viewed from a rear end of the vehicle;

wherein the auxiliary battery includes a first auxiliary battery for a power source of a starter motor of an engine and a second auxiliary battery for a power source for auxiliary equipment other than the starter motor, and the first auxiliary battery and the second auxiliary battery are arranged side by side in a vehicle width direction at the same vehicle longitudinal position in the vehicle rear side space of the propulsion battery.