ADAPTIVE BATTERY CHARGING

• US 20170077717A1
• Filed: 09/11/2015
• Published: 03/16/2017
• Est. Priority Date: 09/11/2015
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Kuusisto, Juha, Rajala, Jarno, Rajamki, Markku, Lundgren, Mika-Petteri, Aaltonen, Markus
• Granted Patent: US 10,587,135 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01R 31/385 Arrangements for measuring battery or accumulator variables for monitoring G01R31/382
• CPC Class Codes: G01R 31/389 Measuring internal impedance, internal conductance or related variables
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health
• CPC Class Codes: H01M 10/445 in response to gas pressure
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• 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 7/007186 obtained with the battery disconnected from the charge or discharge circuit
• CPC Class Codes: H02J 7/007188 the charge cycle being controlled or terminated in response to non-electric parameters
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

In an embodiment, adaptive charging of a battery is disclosed. In an embodiment, a device is disclosed comprising: a battery; at least one sensor configured to sense an outward pressure exerted by the battery; a monitoring module configured to monitor the outward pressure of the battery and at least one of a temperature, an age, a manufacturer, a state of charge, an impedance, and number of charging cycles of the battery; a control module configured to select a charging profile for the battery based on at least one of the sensed and/or monitored battery related variables; and a charging module configured to charge the battery according to a charging profile selected by the control module.

Claims

1. A device, comprising:

a battery;

at least one sensor configured to sense an outward pressure exerted by the battery;

a monitoring module configured to monitor the outward pressure exerted by the battery and at least one of a temperature of the battery, an age of the battery, a manufacturer of the battery, a state of charge of the battery, an impedance of the battery, and a number of charging cycles of the battery;

a control module configured to select a charging profile for the battery; and

a charging module configured to charge the battery according to the charging profile selected by the control module,

wherein;

the selection of the charging profile is based on at least one of;

the outward pressure exerted by the battery;

a rate of change in the outward pressure exerted by the battery;

an impedance of the battery;

a rate of change of the impedance of the battery;

a number of charging cycles of the battery;

a temperature of the battery; and

an age of the battery.

2. The device of claim 1, wherein a single module comprises the monitoring module, control module, and charging module.

3. The device of claim 1, wherein at least one of:

temperature, age, manufacturer, state of charge, impedance, and number of charging cycles of the battery are determined by the charging module and communicated to the monitoring module.

4. The device of claim 1, further including a sensor for sensing temperature.

5. The device of claim 1, wherein at least one of the age of the battery and the number of charging cycles of the battery is read from an integrated circuit present in the battery.

6. The device of claim 1, wherein the age of the battery is calculated from data available on the device.

7. The device of claim 1, wherein battery impedance is measured within a pre-specified range of at least one of:

battery temperature and battery voltage.

8. The device of claim 7, wherein the measured battery impedance is measured as an average of repeated measurements.

9. The device of claim 1, wherein the number of charging cycles of the battery is stored in the integrated circuit present in the battery.

10. The device of claim 1, wherein at least one of pressure and rate of change of pressure is measured within a pre-specified range of at least one of:

battery temperature and battery voltage.

11. The device of claim 1, wherein at least one charging profile comprises setting at least one of:

a charging voltage range, a charging current range, a charging temperature range, a state of charge range.

12. The device of claim 1, wherein at least one charging profile comprises at least one of:

a lower than normal charging voltage;

a lower than nominal charging current;

a narrower than nominal charging temperature.

13. The device of claim 1, wherein at least one charging profile comprises not charging the battery.

14. The device of claim 1, wherein at least one charging profile includes a user interface pop-up message to alert a user.

15. The device of claim 1, wherein at least one charging profile is configured to at least one of delay and control swelling.

16. The device of claim 1, wherein at least one charging profile is configured to extend battery life.

17. A mobile device, comprising:

a battery;

at least one capacitive sensor configured to sense an outward pressure exerted by the battery;

a monitoring module configured to monitor the outward pressure exerted by the battery and at least one of a temperature of the battery, an age of the battery, a manufacturer of the battery, a state of charge of the battery, an impedance of the battery, and a number of charging cycles of the battery;

a control module configured to select a charging profile for the battery; and

a charging module configured to charge the battery according to the charging profile selected by the control module,

wherein;

the selection of the charging profile is based on whether at least one threshold value has been passed by a combinative parameter, the combinative parameter being based on at least one of;

the outward pressure exerted by the battery;

a rate of change in the outward pressure exerted by the battery;

an impedance of the battery;

a rate of change of the impedance of the battery;

a number of charging cycles of the battery; and

an age of the battery.

18. The mobile device of claim 17, wherein the combinative parameter is based at least in part upon dimensions of a battery slot.

19. The mobile device of claim 17, wherein the combinative parameter comprises a weighted sum of a value of swelling;

a value of rate of swelling;

a value of impedance;

a value of rate of change of impedance;

number of charging cycles of the battery and an age of the battery.

20. A method of charging a battery, comprising:

determining an age of the battery;

determining an impedance of the battery;

determining a cycle count of the battery;

determining an outward pressure exerted by the battery; and

selecting a charging profile for charging the battery based on at least one of the determined age, impedance, cycle count, and an outward pressure exerted by the battery.