Electric bike extended range battery power electronics and control

• US 9,796,277 B2
• Filed: 02/27/2015
• Issued: 10/24/2017
• Est. Priority Date: 02/27/2015
• Status: Expired due to Fees

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Hayslett, Steven L., Stancu, Constantin C., Cintron-Rivera, Jorge G.
• Primary Examiner(s): ISMAIL, MAHMOUD S
• Application Number:
  US14/633,878
• Publication Number:
  US 20160250937A1
• Time in Patent Office: 970 Days
• Field of Search: 701 22, 320101
• CPC Class Codes: B60L 53/20 characterised by converters located in the vehicle
• CPC Class Codes: B60L 53/80 Exchanging energy storage elements, e.g. removable batteries
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B62M 6/45 Control or actuating devices therefor
• CPC Class Codes: B62M 6/90 Batteries
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• 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 90/14 Plug-in electric vehicles

Abstract

A number of variations may include a product comprising: an extended range battery system for an electric bicycle comprising a first battery system and a second battery system, and wherein direct current biasing is utilized between the first battery system and the second battery system to extend the range of the extended range battery system.

Claims

1. A method for an extended range battery system for an electric bicycle comprising utilizing direct current biasing between a first battery system and a second battery system to extend a range of the extended range battery system comprising:

providing the electric bicycle with the first battery system and the second battery system, wherein the first battery system comprises a high voltage battery and the second battery system comprises a low voltage battery;

operatively connecting a first sensor to the high voltage battery and operatively connecting a second sensor to the low voltage battery;

monitoring a first current of the high voltage battery with the first sensor;

monitoring a second current of the low voltage battery with the second sensor;

sending a first signal output from the first sensor and a second signal output from the second sensor to a controller;

processing the first signal output and the second signal output to a control logic in the controller; and

modulating at least one switch in the extended range battery system based on the control logic to alternate whether energy transfer to or from a motor comes from the first battery system or the second battery system.

2. The method of claim 1 wherein energy to the motor is alternated between the high voltage battery and the low voltage battery based on whether the high voltage battery or the low voltage battery has a higher state of charge and dc voltage.

3. The method of claim 1 wherein the extended range battery system includes one of a bi directional buck boost circuit, a uni directional boost circuit, or a Quasi-Z-Source inverter circuit.