Battery's state-of-charge balancing control method for hybrid vehicle

• US 8,330,424 B2
• Filed: 05/17/2010
• Issued: 12/11/2012
• 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
• Primary Examiner(s): Diao, M'Baye
• Application Number:
  US12/781,180
• Publication Number:
  US 20110115439A1
• Time in Patent Office: 939 Days
• Field of Search: 320/136, 320/132
• 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 a SOC compensation value based on the outside air temperature at the traveling destination;

determining a 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,

wherein the determined SOC strategy value has a value obtained by subtracting from the current SOC value a 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.

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 outside air temperature at a particular destination is automatically recognized when the destination is input into a navigation system.