Method and apparatus for testing battery conditions

• US 10,451,681 B2
• Filed: 03/17/2017
• Issued: 10/22/2019
• Est. Priority Date: 03/17/2016
• Status: Active Grant

• Current Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Original Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Inventors: Yang, Tao, Chen, Jing, Cui, Jesse Xizhi, Song, James Zhenyu, Zheng, Wayne Wei
• Primary Examiner(s): Henze-Gongola, David V
• Application Number:
  US15/461,701
• Publication Number:
  US 20170269163A1
• Time in Patent Office: 949 Days
• Field of Search: 324427, 324434
• CPC Class Codes: G01R 19/1659 to indicate that the value is within or outside a predetermined range of values (window) G01R19/16514, G01R19/16519, G01R19/16528 and G01R19/16533 take precedence
• CPC Class Codes: G01R 31/385 Arrangements for measuring battery or accumulator variables for monitoring G01R31/382
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/005 Detection of state of health [SOH]
• CPC Class Codes: H02J 7/0063 with circuits adapted for supplying loads from the battery
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current

Abstract

Embodiments of the present disclosure provide a method and apparatus for testing a condition of a battery. In one embodiment, a testing instruction for the battery is received from a controller of a device. In response to reception of the instruction, the battery is caused in a testing mode in which the battery and a power supply of the device concurrently provide power to the device, a first voltage provided by the battery being greater than a second voltage provided by the power supply. A condition of the battery is determined by monitoring an output current of the battery. Through the method and apparatus of the embodiments of the present disclosure, consumption for battery test may be reduced without a need of interrupting operations of the apparatus.

Claims

1. A method of testing a battery of a device, comprising:

receiving a testing command for the battery;

in response to receiving the testing command, causing the battery to enter into a testing mode in which the battery and a power supply of the device concurrently provide power to the device, a first voltage provided by the battery being greater than a second voltage provided by the power supply and a first current provided by the battery being less than a second current provided by the power supply; and

determining a condition of the battery by monitoring current outputted by the battery, wherein determining the condition of the battery comprises;

determining that the first current is in a range limited by a lower-limit threshold current and an upper-limit threshold current, and

in response to the first current being above the upper-limit threshold current, adjusting the first current to be in the range by lowering the first voltage while keeping the first voltage above the second voltage.

2. The method according to claim 1, wherein the determining a condition of the battery comprises:

in response to determining that the current is in a range limited by a lower-limit threshold current and an upper-limit threshold current, monitoring the current for a predetermined time period;

in response to maintaining the current in the range during the predetermined time period, determining that the battery is in a normal state; and

in response to the current falling below the range during the predetermined time period, determining that the battery is in a fault state.

3. The method according to claim 2, wherein the determining a condition of the battery further comprises:

in response to the current being lower than the lower-limit threshold current adjusting the current to be in the range by raising the first voltage.

4. The method according to claim 3, wherein the determining a condition of the battery further comprises:

determining that the battery is in a fault state in response to the raised first voltage exceeding a first threshold voltage while the current being still lower than the lower-limit threshold current.

5. The method according to claim 1, further comprising:

monitoring the second voltage provided by the power supply; and

in response to the second voltage being below a second threshold voltage, causing the battery to switch from the testing mode to the working mode so as to supply power to the device.

6. The method according to claim 1, further comprising:

transmitting an indication of the state of the battery to a controller of the device.

7. The method according to claim 1, wherein causing the battery to enter into a testing mode comprises:

in response to receiving the command, detecting current battery energy of the battery; and

in response to the current battery energy of the battery being greater than a threshold electric energy, causing the battery to enter into the test mode.

8. An electronic device, comprising:

a battery; and

a battery manager that is communicatively coupled to the battery and configured to;

receive a testing command for the battery;

in response to receiving the testing command, cause the battery to enter into a testing mode in which the battery and a power supply of the device concurrently provide power to the device, a first voltage provided by the battery being greater than a second voltage provided by the power supply and a first current provided by the battery being less than a second current provided by the power supply; and

determine a condition of the battery by monitoring current outputted by the battery, wherein determining the condition of the battery comprises;

determining that the first current is in a range limited by a lower-limit threshold current and an upper-limit threshold current, and

in response to the first current being above the upper-limit threshold current, adjusting the first current to be in the range by lowering the first voltage while keeping the first voltage above the second voltage.

9. The electronic device according to claim 8, wherein the battery manager is further configured to:

in response to determining that the current is in a range limited by a lower-limit threshold current and an upper-limit threshold current, monitor the current for a predetermined time period;

in response to maintaining the current in the range during the predetermined time period, determine that the battery is in a normal state; and

in response to the current falling below the range during the predetermined time period, determine that the battery is in a fault state.

10. The electronic device according to claim 9, wherein the battery manager is further configured to:

in response to the current being lower than the lower-limit threshold current, adjust the current to be in the range by raising the first voltage.

11. The electronic device according to claim 10, wherein the battery manager is further configured to:

determine that the battery is in a fault state in response to the raised first voltage exceeding a first threshold voltage while the current being still lower than the lower-limit threshold current.

12. The electronic device according to claim 8, wherein the battery manager is further configured to:

monitor the second voltage provided by the power supply; and

in response to the second voltage being below a second threshold voltage, cause the battery to switch from the testing mode to the working mode so as to supply power to the device.

13. The electronic device according to claim 8, wherein the battery manager is further configured to:

transmit an indication of the state of the battery to a controller of the device.

14. The electronic device according to claim 8, wherein the battery manager is further configured to:

detect current battery energy of the battery; and

in response to the current battery energy being greater than a threshold electric energy, causing the battery to enter into the test mode.

15. A battery manager comprising a computer program product residing on a non-transitory computer readable storage medium having a plurality of instructions stored thereon which, when executed by a processor, cause the processor to perform operations, comprising;

receiving a testing command for a battery;

in response to receiving the testing command, causing the battery to enter into a testing mode in which the battery and a power supply of the device concurrently provide power to the device, a first voltage provided by the battery being larger than a second voltage provided by the power supply and a first current provided by the battery being less than a second current provided by the power supply; and

determining a condition of the battery by monitoring current outputted by the battery, wherein determining the condition of the battery comprises;

determining that the first current is in a range limited by a lower-limit threshold current and an upper-limit threshold current, and

in response to the first current being above the upper-limit threshold current, adjusting the first current to be in the range by lowering the first voltage while keeping the first voltage above the second voltage.