HIGH-VOLTAGE BATTERY UNIT MOUNTING STRUCTURE FOR VEHICLE

• US 20090090575A1
• Filed: 09/26/2008
• Published: 04/09/2009
• Est. Priority Date: 12/24/2004
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: NAGASAKA, Satoshi
• Granted Patent: US 7,967,093 B2
• Time in Patent Office: Days
• US Class Current: 180/68.5
• 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 2001/005 the electric storage means
• CPC Class Codes: B60L 58/26 by cooling
• CPC Class Codes: B60L 58/33 by cooling
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 90/40 Application of hydrogen technology to transportation, e.g. using fuel cells

Abstract

To make even a high-voltage battery with an extraordinarily large capacity, mountable on a vehicle, a high-voltage battery is installed on a rear floor panel in a rear portion of a fuel cell electric vehicle, and a cooling fan unit for cooling the battery is connected to the high-voltage battery by an exhaust duct. In addition, the cooling fan unit is disposed on a rear side member, in the vicinity, at the vehicle-rear side, of the high voltage battery, and on the same horizontal plane that the high-voltage battery is located on. At the vehicle-rear side of the high-voltage battery, a utility box is provided. An exhaust duct connected to the cooling fan unit is disposed between the utility box and a utility box adjacent thereto.

Claims

1. A high-voltage battery unit mounting structure for vehicle, wherein a high-voltage battery is mounted in a lower portion of a vehicle, and a cooling fan motor for cooling the high-voltage battery is disposed in the vicinity of the high-voltage battery at a vehicle-rear side on the same horizontal plane that the high-voltage battery is located on.

2. The high-voltage battery unit mounting structure for vehicle according to claim 1, wherein the vehicle is a fuel cell electric vehicle that mounts a fuel cell thereon, wherein a hydrogen pipe for supplying the fuel cell extends in the vehicle fore-and-aft direction, and wherein positions of the hydrogen pipe and the cooling fan motor in the vehicle-height direction are shifted from each other when viewed from the vehicle fore-and-aft direction.

3. The high-voltage battery unit mounting structure for vehicle according to claim 1, wherein the cooling fan motor is disposed on a vehicle-body frame member located in the lower portion of the vehicle.

4. The high-voltage battery unit mounting structure for vehicle according to claim 1, wherein an exhaust duct which receives exhaust air containing heat generated from the high-voltage battery and through which the exhaust air is flown by the cooling fan motor is disposed in a parting portion between a plurality of article storage boxes provided in a vehicle compartment.

5. The high-voltage battery unit mounting structure for vehicle according to claim 1, wherein an exhaust duct which receives exhaust air containing heat generated from the high-voltage battery and through which the exhaust air is flown by the cooling fan motor is disposed so as to have a discharge port located in the vicinity of a rear-end portion of the vehicle.

6. The high-voltage battery unit mounting structure for vehicle according to claim 1, wherein an exhaust duct which receives exhaust air containing heat generated from the high-voltage battery and through which the exhaust air is flown by the cooling fan motor is disposed so as to be surrounded by a plurality of article storage boxes provided in a vehicle compartment.

7. The high-voltage battery unit mounting structure for vehicle according to claim 1, wherein an exhaust duct which receives exhaust air containing heat generated from the high-voltage battery and through which the exhaust air is flown by the cooling fan motor is disposed so as to make the space between outer walls of a plurality of article storage boxes provided in a vehicle compartment be an exhaust passage.

8. The high-voltage battery unit mounting structure for vehicle according to claim 4, wherein the article storage boxes are brought into close contact with a vehicle body.

9. The high-voltage battery unit mounting structure for vehicle according to claim 7, wherein the exhaust duct is connected to an exhaust port disposed on the side of a rear portion of the vehicle.

10. The high-voltage battery unit mounting structure for vehicle according to claim 4, wherein the article storage boxes are brought into close contact with a rear floor panel.

11. The high-voltage battery unit mounting structure for vehicle according to claim 1, wherein the high-voltage battery and the cooling fan motor are arranged on a floor panel under a cargo room in a rear portion of the vehicle.