BATTERY'S STATE-OF-CHARGE BALANCING CONTROL METHOD FOR HYBRID VEHICLE

• US 20110115439A1
• Filed: 05/17/2010
• Published: 05/19/2011
• Est. Priority Date: 11/17/2009
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: Kim, Jeong Eun
• Granted Patent: US 8,330,424 B2
• Time in Patent Office: Days
• US Class Current: 320/136
• CPC Class Codes: B60L 2240/662 Temperature
• CPC Class Codes: B60L 58/13 Maintaining the SoC within a determined range
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H01M 10/443 in response to temperature
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H02J 2310/40 The network being an on-board power network, i.e. within a vehicle
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/0069 Charging or discharging for charge maintenance, battery initiation or rejuvenation
• 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 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A battery'"'"'s state-of-charge (SOC) balancing control method for a hybrid vehicle is provided, in which the outside air temperature at a traveling destination is reflected to perform the control.

Claims

1. A battery'"'"'s state-of-charge (SOC) balancing control method for a hybrid vehicle, the method comprising:

monitoring a current SOC value;

recognizing an outside air temperature at a traveling destination;

calculating an SOC compensation value based on the outside air temperature at the traveling destination;

determining an SOC strategy value in accordance with the calculated SOC compensation value; and

controlling the operating point of the vehicle based on the determined SOC strategy value.

2. The method of claim 1, further comprising determining the orientation of the SOC value based on a predetermined hysteresis;

3. The method of claim 1, wherein the determined SOC strategy value has a value obtained by subtracting from the current SOC value an SOC comparison value corresponding to an estimated amount of power consumed by an air conditioner at the traveling destination such that it falls within a low range thereby enabling the battery to be charged.

4. The method of claim 1, wherein the outside air temperature at a particular destination is automatically recognized when the destination is input into a navigation system.