Motive power dual battery pack

• US 20070139012A1
• Filed: 10/31/2006
• Published: 06/21/2007
• Est. Priority Date: 11/01/2005
• Status: Abandoned Application

• Current Assignee: Aerovironment
• Original Assignee: Aerovironment
• Inventors: Hayashigawa, Larry
• Application Number:
  US11/591,667
• Publication Number:
  US 20070139012A1
• Time in Patent Office: Days
• US Class Current: 320/128
• CPC Class Codes: B60L 53/00 Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: B60L 58/19 Switching between serial connection and parallel connection of battery modules
• CPC Class Codes: H01M 2008/1095 Fuel cells with polymeric electrolytes
• CPC Class Codes: H01M 8/0284 Organic resins; Organic polymers
• CPC Class Codes: H01M 8/0297 Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other H01M8/0271 takes precedence
• CPC Class Codes: H02J 7/0024 Parallel/serial switching of connection of batteries to charge or load circuit
• CPC Class Codes: Y02E 60/50 Fuel cells
• 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
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A fast charge configuration for a power supply includes a serial connection to a pair of batteries each having an output that is half that required by the device, such as the electric vehicle, in which the batteries are to be used. When the batteries in then connected to the vehicle, they are connected in parallel

Claims

1. A method for charging and discharging a battery-based power supply of an electric vehicle, comprising:

charging a plurality of batteries using a series connection to a fast charger; and

discharging the plurality of batteries using a parallel connection to the electric vehicle.

2. The method of claim 1, wherein the plurality of batteries comprises two batteries.

3. The method of claim 1, wherein the plurality of batteries comprises N batteries each rated to provide an output of 1/N of the total power required by the electric vehicle.

4. A method for providing an electric vehicle with power at a first voltage, comprising:

simultaneously fast charging a pair of batteries each rated at a voltage output that is half said voltage requirement; and

connecting said pair of batteries to the electric vehicle.

5. The method of claim 4, wherein said fast charging includes connecting the pair of batteries to fast charger in a series connection.

6. The method of claim 4, wherein said pair of batteries are connected to the electric vehicle in parallel.

7. A system for charging and discharging a battery-based power supply of an electric vehicle, comprising:

means for charging a plurality of batteries using a series connection to a fast charger; and

means for discharging the plurality of batteries using a parallel connection to the electric vehicle.

8. A system for providing an electric vehicle with power at a first voltage, comprising:

means for simultaneously fast charging a pair of batteries each rated at a voltage output that is half said voltage requirement; and

means for connecting said pair of batteries to the electric vehicle.