In-vehicle battery system

• US 9,260,068 B2
• Filed: 10/22/2013
• Issued: 02/16/2016
• Est. Priority Date: 10/29/2012
• Status: Active Grant

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Ohsumi, Nobuyuki, Nakajima, Kaoru, Tsunesada, Akinobu, Sakata, Hideki
• Primary Examiner(s): Phan, Hau
• Assistant Examiner(s): MEYER, JACOB B
• Application Number:
  US14/435,444
• Publication Number:
  US 20150232049A1
• Time in Patent Office: 847 Days
• US Class Current: 1/1
• CPC Class Codes: B60K 11/06 with air cooling
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: B60R 16/033 characterised by the use of electrical cells or batteries for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36
• CPC Class Codes: B60R 16/04 Arrangement of batteries
• CPC Class Codes: H01M 10/06 Lead-acid accumulators semi-lead accumulators H01M10/20
• CPC Class Codes: H01M 16/00 Structural combinations of different types of electrochemical generators
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H01M 50/24 adapted for protecting batteries from their environment, e.g. from corrosion thermal insulation H01M10/658
• CPC Class Codes: H01M 50/249 specially adapted for aircraft or vehicles, e.g. cars or trains constructional details of batteries specially adapted for electric vehicles B60L50/64
• CPC Class Codes: H01M 50/509 characterised by the type of connection, e.g. mixed connections
• 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

An in-vehicle battery system comprises a first power storage module including a lead-acid battery, and a second power storage module including a power storage portion having a higher energy density than that of the lead-acid battery. The lead-acid battery and the power storage portion are electrically connected in parallel to a power generating portion which converts a regenerative energy to electric power. The first power storage module and the second power storage module are provided in an engine room of a vehicle. The second power storage module is disposed more distantly than the first power storage module from an engine.

Claims

1. An in-vehicle battery system comprising:

a first power storage module including a lead-acid battery; and

a second power storage module including a power storage portion having a higher energy density than that of the lead-acid battery,

wherein the lead-acid battery and the power storage portion are electrically connected in parallel to a power generating portion which converts a regenerative energy to electric power, and

the first power storage module and the second power storage module are provided in an engine room of a vehicle, and

the second power storage module is disposed at a greater distance from an engine in the engine room than the first power storage module, and

the first power storage module is disposed between the engine and the second power module, and the first power storage module and the second power storage module are set side-by-side in the engine room.

2. The in-vehicle battery system according to claim 1 comprising:

wherein the second power storage module is disposed closer to a passenger compartment than the first power storage module.

3. The vehicle battery system according to claim 1,

wherein the lead-acid battery and the power storage portion are electrically connected in parallel to a power generating portion which converts a regenerative energy to electric power, and

the second power storage module is thermally connected to a vehicle structure.

4. The in-vehicle battery system according to claim 3,

further comprising a terminal connecting member which connects an external terminal of the second power storage module to the vehicle structure,

wherein the second power storage module is thermally connected to the vehicle structure through the terminal connecting member.

5. The in-vehicle battery system according to claim 1,

wherein the first power storage module has a larger heat capacity than that of the second power storage module.

6. The in-vehicle battery system according to claim 1,

wherein surfaces of the first power storage module and the second power storage module partially contact each other.

7. The in-vehicle battery system according to claim 1,

wherein in the view from the engine, the first storage module substantially hides the second power storage module from the engine.