VEHICLE MOUNTING STRUCTURE FOR BATTERY PACK

• US 20130327583A1
• Filed: 05/16/2013
• Published: 12/12/2013
• Est. Priority Date: 06/08/2012
• Status: Active Grant

• Current Assignee: Suzuki Motor Corporation
• Original Assignee: Suzuki Motor Corporation
• Inventors: NITAWAKI, Kunihiro, HORIUCHI, Atsushi
• Granted Patent: US 8,936,126 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 2001/0416 Arrangement in the rear part of the vehicle
• CPC Class Codes: B60K 2001/0438 Arrangement under the floor
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/34 Cabin temperature
• CPC Class Codes: B60L 2270/145 Structure borne vibrations
• CPC Class Codes: B60L 3/0007 Measures or means for preventing or attenuating collisions
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 58/18 of two or more battery modules
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B62D 25/087 Luggage compartments
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Abstract

A vehicle battery pack mounting structure that suppresses vibrations of a floor panel while making a shock absorbing space between the battery pack and vehicle exterior members large by effectively utilizing a space between coil springs. The battery pack mounting structure includes a pair of left and right side members and a cross member for supporting the battery pack. A pair of left and right coil springs is installed at these side members and function as suspension members. The battery pack is installed inside an opening of a floor panel between the coil springs, and also between the coil springs, a front portion of the battery pack has a tapered outer surface that becomes narrower as it enters deeper into a space between the coil springs. The opening of the floor panel also has a tapered edge shape.

Claims

1. A vehicle mounting structure for a battery pack in which batteries for supplying electric powers to electric instruments mounted on a vehicle are accommodated, characterized in that

said vehicle comprises framework members for directly or indirectly supporting said battery pack, a pair of left and right coil springs functioning as suspensions by being directly or indirectly linked with said framework members, and a floor panel to be a floor surface of a vehicle interior by being directly or indirectly supported by said framework members,

said battery pack is installed inside an opening opened up at said floor panel, and a front portion side or a rear portion side in a front and rear direction of said vehicle is located between said coil springs, and

an opening shape of said opening and an outer shape of said battery pack that coincide with an extended plane of said floor panel between said coil springs are formed to be a tapered shape that becomes narrower as it enters deeper into a space between said coil springs.

2. The vehicle mounting structure for a battery pack as described in claim 1, characterized in that said tapered shape of the opening shape of said opening of said floor panel and the outer shape of said battery pack is formed such that a shortest location between said tapered shape and each of said coil springs is located at a middle portion of an edge of said tapered shape.

3. The vehicle mounting structure for a battery pack as described in claim 1, characterized in that said tapered shape of the opening shape of said opening of said floor panel and the outer shape of said battery pack is formed by inclined edges that are to be arranged at facing positions with respect to said coil springs at an opening edge of said opening of said floor panel and an outer surface of said battery pack, which is smoothly continuous with both a side face side and a front face side of the opening shape of said opening of said floor panel and the outer shape of said battery pack.

4. The vehicle mounting structure for a battery pack as described in claim 1, further comprising sub-frames formed in frame shapes along an opening edge of said opening of said floor panel and supported by said framework members, characterized in that

said battery pack is supported by said framework members via said sub-frames, and

said floor panel has a vicinity of at least a corner portion at the opening edge of said opening fixed to said sub-frames.

5. The vehicle mounting structure for a battery pack as described in claim 1, characterized in that said opening of said floor panel is formed at an offset position near one side in a width direction of said vehicle, and supported with an opening edge of said opening positioned at an upper side of one of said framework members.

6. The vehicle mounting structure for a battery pack as described in claim 1, characterized in that said battery pack is installed inside said opening of said floor panel that becomes a floor surface inside a luggage room on a rear side of said vehicle.