Apparatus and method for managing battery

Patent metadata

Field	Value
Publication number	US-10003106-B2
Application number	US-201514819679-A
Country	US
Kind code	B2
Filing date	Aug 6, 2015
Priority date	Oct 14, 2014
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

An apparatus and method for managing a battery are disclosed. The apparatus may include a state verifier configured to verify respective states of charge (SoCs) of batteries to be balanced by the apparatus, and a controller configured to control power converters configured to convert respective amounts of power of the batteries to allow a greater amount of power to be output from a battery having a greater SoC among the batteries.

First claim

What is claimed is:

1. A battery managing apparatus, comprising:
a state verifier configured to verify respective states of charge (SoCs) of batteries to be balanced by the battery managing apparatus; and
a controller configured to set compensation values based on a maximum value and a minimum value of the SoCs of the batteries, an order of magnitudes of the SoCs of the batteries and a number of the batteries, and to control output voltages of power converters configured to convert respective amounts of power of the batteries to allow a greater amount of power to be transmitted from a battery having a greater SoC among the batteries to a load based on the SoCs of the batteries and the compensation values.

2. The apparatus of claim 1 , wherein a difference between the maximum value and the minimum value of the SOCs of the batteries is restricted to allow an amount of output power of the power converters to remain within a predetermined range.

3. The apparatus of claim 1 , wherein the compensation values are set to allow a total amount of power to be output from the power converters to be maintained at a same amount.

4. The apparatus of claim 1 , wherein
the state verifier is configured to further verify respective states of health (SoHs) of the batteries; and
the controller is configured to control a power converter, among the power converters, connected to a corresponding battery among the batteries, based on an overall SoC and an overall SoH of the batteries, and an SoC and an SoH of the corresponding battery.

5. The apparatus of claim 1 , wherein output terminals of the power converters are connected in series or in parallel.

6. The apparatus of claim 1 , wherein, when an amount of output power of the power converters deviates from a predetermined range, the controller is configured to restrict the amount of the output power of the power converters to a predetermined value.

7. A battery managing method to be performed by a battery managing apparatus, the method comprising:
verifying respective states of charge (SoCs) of batteries to be balanced by the battery managing apparatus;
setting compensation values based on a maximum value and a minimum value of the SoCs of the batteries, an order of magnitudes of the SoCs of the batteries and a number of the batteries and
controlling output voltages of power converters configured to convert respective amounts of power of the batteries to allow a greater amount of power to be transmitted from a battery having a greater SoC among the batteries to a load based on the SoCs of the batteries and the compensation values.

8. The method of claim 7 , further comprising restricting a difference between the maximum value and the minimum value of the SOCs of the batteries to allow an amount of output power of the power converters to remain within a predetermined range.

9. The method of claim 7 , wherein the compensation values are set to allow a total amount of power to be output from the power converters to be maintained at a same amount.

10. The method of claim 7 , wherein the verifying comprises:
further verifying respective states of health (SoHs) of the batteries; and
the controlling comprises controlling a power converter, among the power converters, connected to a corresponding battery among the batteries, based on an overall SoC and an overall SoH of the batteries, and an SoC and an SoH of the corresponding battery.

11. The method of claim 7 , wherein output terminals of the power converters are connected in series or in parallel.

12. The method of claim 7 , wherein, when an amount of output power of the power converters deviates from a predetermined range, the controlling comprises restricting the amount of the output power of the power converters to a predetermined value.

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 7 .

14. A battery managing apparatus, comprising:
a controller configured set respective compensation values for power converters corresponding to batteries based on a maximum value and a minimum value of states of charge (SoCs) of the batteries, an order of magnitudes of the SoCs of the batteries and a number of the batteries, and to control the power converters in a power supply apparatus to convert respective amounts of power of the batteries based on a comparison of respective SoCs of the batteries and the respective compensation values to allow a greater amount of power to be transmitted from a battery having a greater SoC among the batteries in order to balance the SoCs of the batteries, wherein the converted respective amounts of power of the batteries is transmitted from the batteries to a load.

15. The battery management apparatus of claim 14 , wherein the respective compensation values are set such that the respective amounts of power of the batteries are proportional to the respective SOCs of the batteries.

Assignees

• Samsung Electronics Co Ltd
• Research & Business Found Sungkyunkwan Univ
• Samsung & Electronics Co Ltd

Inventors

• Jeon Jinyong
• Yeo Taejung
• Choi Seong Chon
• Lee Soon Ryung
• Choi Bong Yeon

Classifications

• H02J7/933

  the cycle being controlled or terminated in response to electric parameters · CPC title

• H02J2207/20

  Charging or discharging characterised by the power electronics converter · CPC title

• H01M10/425 Primary

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M10/44

  Methods for charging or discharging (circuits for charging H02J7/00) · CPC title

• H01M2010/4271

  Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing · CPC title