BATTERY MANAGEMENT APPARATUS AND BATTERY MANAGEMENT METHOD

• US 20170229878A1
• Filed: 01/31/2017
• Published: 08/10/2017
• Est. Priority Date: 02/04/2016
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Myung Hoon, JUNG, Dae Ryong, OH, Duk Jin, LIM, Ju Wan
• Application Number:
  US15/420,833
• Publication Number:
  US 20170229878A1
• Time in Patent Office: Days
• 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 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/617 for achieving uniformity or desired distribution of temperature
• CPC Class Codes: H01M 10/63 Control systems charging or discharging in response to temperature H01M10/44 , H01M10/443; measurement of temperature H01M10/48 , H01M10/486
• CPC Class Codes: H01M 2010/4271 Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery management apparatus including: a state of charge (SOC) estimator configured to estimate an SOC of a battery; and a storage temperature controller configured to control a storage temperature of the battery based on the SOC of the battery.

Claims

1. A battery management apparatus, comprising:

a state of charge (SOC) estimator configured to estimate an SOC of a battery; and

a storage temperature controller configured to control a storage temperature of the battery based on the SOC of the battery.

2. The battery management apparatus of claim 1, wherein the SOC estimator estimates the SOC of the battery in response to an electric power supply of the battery being discontinued or a critical time passing after the electric power supply of the battery has been discontinued.

3. The battery management apparatus of claim 2, wherein the critical time is 48 hours.

4. The battery management apparatus of claim 1, wherein:

the storage temperature controller is configured to control the storage temperature of the battery to maintain the storage temperature of the battery below a first target temperature, in response to an SOC value of the battery being equal to or less than a critical SOC value of the battery; and

the storage temperature controller is configured to control the storage temperature of the battery to maintain the storage temperature below a second target temperature, in response to the SOC value of the battery exceeding the critical SOC value of the battery.

5. The battery management apparatus of claim 4, wherein the critical SOC value is 50%, the first target temperature is 25°

C., and the second target temperature is 10°

C.

6. The battery management apparatus of claim 1, wherein:

the storage temperature controller is configured to control the storage temperature of the battery to maintain the storage temperature of the battery below a third target temperature, in response to an SOC value of the battery being in a critical SOC range; and

the storage temperature controller is configured to control the storage temperature of the battery to maintain the storage temperature of the battery below a fourth target temperature, in response to the SOC value of the battery exceeding the critical SOC range.

7. The battery management apparatus of claim 6, wherein the critical SOC range is equal to or greater than 30% and equal to or less than 60%, the third target temperature is 25°

C., and the fourth target temperature is 10°

C.

8. The battery management apparatus of claim 1, wherein the storage temperature controller is configured to control the storage temperature of the battery using a cooling system or a heating, ventilation, and air conditioning (HVAC) system.

9. A battery management method, comprising:

estimating, using a processor, a state of charge (SOC) of a battery; and

controlling, using the processor, a storage temperature of the battery based on the SOC of the battery.

10. The battery management method of claim 9, wherein the estimating of the SOC of the battery comprises estimating the SOC of the battery in response to an electric power supply of the battery being discontinued or a critical time passing after the electric power supply of the battery has been discontinued.

11. The battery management method of claim 10, wherein the critical time is 48 hours.

12. The battery management method of claim 9, wherein the controlling of the storage temperature of the battery comprises:

controlling the storage temperature of the battery to maintain the storage temperature of the battery below a first target temperature, in response to an SOC value of the battery being equal to or less than a critical SOC value; and

controlling the storage temperature of the battery to maintain the storage temperature of the battery below a second target temperature, in response to the SOC value of the battery exceeding the critical SOC value.

13. The battery management method of claim 12, wherein the critical SOC value is 50%, the first target temperature is 25°

C., and the second target temperature is 10°

C.

14. The battery management method of claim 9, wherein the controlling of the storage temperature of the battery comprises:

controlling the storage temperature of the battery to maintain the storage temperature of the battery below a third target temperature, in response to an SOC value of the battery being within a critical SOC range; and

controlling the storage temperature of the battery to maintain the storage temperature of the battery below a fourth target temperature, in response to the SOC value of the battery exceeding the critical SOC range.

15. The battery management method of claim 14, wherein the critical SOC range is equal to or greater than 30% and equal to or less than 60%, the third target temperature is 25°

C., and the fourth target temperature is 10°

C.

16. The battery management method of claim 11, wherein the controlling of the storage temperature of the battery comprises controlling the storage temperature of the battery using a cooling system or an HVAC system.

17. A battery management method comprising:

determining, using a processor, a storage mode of a battery to be a long-term storage mode in which an electric power supply of the battery is discontinued;

in response to a state of charge (SOC) value of the battery being greater than a target SOC value during the long-term storage mode, discharging, using the processor, the battery to reduce the SOC value of the battery to the target SOC value; and

in response to the SOC value of the battery being less than the target SOC value during the long-term storage mode, charging the battery to increase the SOC value of the battery to the target SOC value.

18. The method of claim 17, further comprising:

controlling a storage temperature of the battery to maintain the storage temperature of the battery below a first target temperature during the long-term storage mode.

19. The method of claim 17, further comprising:

in response to a use time for the battery being set, pre-charging the battery, using the processor, prior to the use time.