Vehicle system with batteries in series

• US 9,555,712 B2
• Filed: 03/14/2014
• Issued: 01/31/2017
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: PHINIA TECHNOLOGIES INC.
• Original Assignee: Remy Technologies LLC (BorgWarner Incorporated)
• Inventors: Neet, Kirk
• Primary Examiner(s): Siek, Vuthe
• Application Number:
  US14/211,209
• Publication Number:
  US 20140266043A1
• Time in Patent Office: 1,054 Days
• Field of Search: 320/109
• US Class Current: 1/1
• CPC Class Codes: B60L 15/007 Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2240/427 Voltage
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 58/18 of two or more battery modules
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• 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 10/72 Electric energy management in electromobility

Abstract

A vehicle system is provided and includes a 12 volt alternator and a 24 volt wound rotor configured for acceptance in the 12 volt alternator.

Claims

1. A vehicle system, comprising:

an alternator configured to independently charge a first battery having a first voltage and a second battery connected in series with the first battery; and

a rotor having a rotor field winding which is powered by a second voltage of the first and second batteries, wherein the second voltage is greater than the first voltage.

2. The vehicle system of claim 1, wherein the first and second batteries are 12 volt batteries.

3. The vehicle system of claim 2, wherein the rotor is a 24 volt wound rotor and the alternator further comprising a 12 volt wound stator.

4. The vehicle system of claim 1, wherein the second voltage is substantially twice the first voltage.

5. The vehicle system according to claim 1, further comprising one or more additional batteries in series with the first and second batteries to power the rotor field winding.