METHOD OF CONTROLLING TEMPERATURE OF BATTERY, AND BATTERY MANAGEMENT APPARATUS AND SYSTEM

• US 20180093583A1
• Filed: 07/25/2017
• Published: 04/05/2018
• Est. Priority Date: 10/05/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, YoungJae, SOHN, DongKee, JUNG, Daebong, JEONG, Ji-young
• Granted Patent: US 11,186,197 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60L 58/18 of two or more battery modules
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B60L 58/25 by controlling the electric load
• CPC Class Codes: H01M 10/443 in response to temperature
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/486 for measuring temperature
• 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: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/0018 using separate charge circuits
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/007192 in response to temperature
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A method to control a battery temperature includes: determining state difference information of a first battery, among batteries, based on state information of the first battery and average state information of the batteries; calculating a first output value of a first converter corresponding to the first battery based on the determined state difference information; and controlling a charging and discharging process of the batteries to cause the first converter to generate a power flow based on the calculated first output value.

Claims

1. A method to control a battery temperature, the method comprising:

determining state difference information of a first battery, among batteries, based on state information of the first battery and average state information of the batteries;

calculating a first output value of a first converter corresponding to the first battery based on the determined state difference information; and

controlling a charging and discharging process of the batteries to cause the first converter to generate a power flow based on the first output value.

2. The method of claim 1, wherein the determining of the state difference information of the first battery is comprises

determining the state difference information of the first battery in response to an average of a temperature of the first battery and a temperature of a second battery, among the batteries, becoming less than or equal to a threshold temperature.

3. The method of claim 1, wherein the controlling of the charging and discharging process comprises

determining an operation mode of the first converter to be either one of a charging mode and a discharging mode,

transmitting information on the determined operation mode and the first output value to either one of the first converter and a controller corresponding to the first converter, and

in response to a toggling event associated with a change in direction of the power flow occurring, changing the determined operation mode to be another of the charging mode and the discharging mode.

4. The method of claim 3, wherein the controlling of the charging and discharging process comprises

transmitting, to either one of the first converter and the controller, information on the changed operation mode to cause the first converter to generate another power flow different from the power flow.

5. The method of claim 4, wherein the determining of the operation mode of the first converter comprises

determining the operation mode of the first converter using either one or both of electrical-physical quantity information of a power storage different from the first battery and the state information of the first battery.

6. The method of claim 1, wherein the calculating of the first output value comprises

calculating the first output value using the state difference information and required physical quantity information of a load.

7. The method of claim 1, further comprising:

calculating a second output value corresponding to an electrical-physical quantity flowing in another direction different from a direction of the power flow based on the first output value and an output value of a second battery, among the batteries.

8. The method of claim 7, wherein

the power flow comprises power corresponding to the first output value flowing from one end to another end of the first converter, and

in response to a toggling event associated with a change in direction occurring, another power flow flowing in the other direction and comprising power corresponding to the second output value flowing from the other end to the one end is generated.

9. The method of claim 1, wherein the controlling of the charging and discharging process comprises:

classifying the first battery and a second battery, among the batteries, that satisfy a requirement into a group;

determining an operation mode of the first converter and an operation mode of a second converter corresponding to the second battery to be different from each other; and

in response to a toggling event associated with a change in direction of the power flow in the group occurring, changing the determined operation mode of each of the first converter and the second converter.

10. The method of claim 9, wherein the requirement comprises either one or both of a requirement associated with a difference between the state information of the first battery and state information of the second battery, and a requirement associated with proximity between the first battery and the second battery.

11. The method of claim 9, wherein the first converter is configured to receive first power corresponding to the first output value from the first battery and output the first power to the second converter before the toggling event occurs, and to receive second power corresponding to a second output value of the second converter from the second battery and charge the first battery with the second power, in response to the toggling event occurring.

12. The method of claim 1, further comprising:

terminating the charging and discharging process, in response to an average of a temperature of the first battery and a temperature of a second battery, among the batteries, being greater than or equal to a target temperature, as a result of the charging and discharging process.

13. A non-transitory computer-readable storage medium storing instructions that, when executed by a processor, cause the processor to perform the method of claim 1.

14. A battery management apparatus, comprising:

a controller configured to determine state difference information of a first battery, among batteries, based on state information of the battery and average state information of the batteries, calculate a first output value of a first converter corresponding to the first battery based on the determined state difference information, and control a charging and discharging process of the batteries to cause the first converter to generate a power flow based on the first output value.

15. The apparatus of claim 14, wherein

the controller is configured to determine the state difference information of the first battery in response to an average of a temperature of the first battery and a temperature of a second battery, among the batteries, becoming less than or equal to a threshold temperature.

16. The apparatus of claim 14, wherein the controller is further configured to

determine an operation mode of the first converter to be one of a charging mode and a discharging mode,

transmit information on the determined operation mode and the first output value to either one of the first converter and a sub-controller corresponding to the first converter, and

change the determined operation mode to the other operation mode, in response to a toggling event associated with a change in direction of the power flow occurring.

17. The apparatus of claim 16, wherein the controller is further configured to transmit information on the changed operation mode to either one of the first converter and the sub-controller to cause the first converter to generate another power flow different from the power flow.

18. The apparatus of claim 17, wherein the controller is further configured to determine the operation mode of the first converter using either one or both of electrical-physical quantity information of a power storage different from the first battery and the state information of the first battery.

19. The apparatus of claim 14, wherein the controller is further configured to calculate the first output value using the state difference information and required physical quantity information of a load.

20. The apparatus of claim 14, wherein the controller is further configured to calculate a second output value corresponding to an electrical-physical quantity flowing in another direction different from a direction of the power flow based on the first output value and an output value of a second battery, among the batteries.

21. The apparatus of claim 14, wherein the controller is further configured to

classify the first battery and a second battery, among the batteries, which satisfy a preset requirement, into a group,

determine an operation mode of the first converter and an operation mode of a second converter corresponding to the second battery to be different from each other, and

change the determined operation mode of each of the first converter and the second converter, in response to a toggling event associated with a change in direction of the power flow in the group occurring.

22. The apparatus of claim 21, wherein the requirement comprises either one or both of a requirement associated with a difference between the state information of the battery and state information of the other battery, and a requirement associated with proximity between the first battery and the second battery.

23. The apparatus of claim 14, further comprising:

a memory configured to store an instruction to operate the controller

24. A battery management system, comprising:

a slave manager configured to sense a physical quantity of a battery, among batteries; and

a master manager configured to

receive the sensed physical quantity from the slave manager and determine state information of the battery based on the received physical quantity,

determine state difference information of the battery based on the determined state information and average state information of the batteries,

calculate an output value of a converter corresponding to the battery based on the determined state difference information, and

control a charging and discharging process of the batteries to cause the converter to generate a power flow based on the calculated output value.