THIN FILM BATTERY CHARGE CONTROL AND METHOD

• US 20140055085A1
• Filed: 02/22/2013
• Published: 02/27/2014
• Est. Priority Date: 02/23/2012
• Status: Abandoned Application

• Current Assignee: Cymbet Corporation
• Original Assignee: Cymbet Corporation
• Inventors: Downey, Stephen W., Inselman-Field, Nissa
• Application Number:
  US14/003,711
• Publication Number:
  US 20140055085A1
• Time in Patent Office: Days
• US Class Current: 320/107
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/443 in response to temperature
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 6/40 Printed batteries , e.g. thin film batteries
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A thin film battery and charging system is provided comprising a cathode material, a cathode current collector, an anode current collector, and an electrolyte layer separating the cathode material from the anode current collector configured to form a battery having at least one intercalating electrode. The system additionally comprises an integrated-circuit battery-charging and managing circuit and a user controlled input having selection capability for the user to choose from a plurality of levels of state of charge of the battery. A method of charging a thin film battery is also described.

Claims

1. A thin film battery and charging system comprising:

a cathode material, a cathode current collector, an anode current collector, and an electrolyte layer separating the cathode material from the anode current collector configured to form a battery having at least one intercalating electrode;

an integrated-circuit battery-charging and managing circuit;

a user controlled input having selection capability for the user to choose from a plurality of levels of state of charge of the battery.

2. The thin film battery and charging system of claim 1, wherein the user controlled input permits selection of maximum and minimum values of state of charge of the battery.

3. The thin film battery and charging system of claim 1, wherein the user controlled input permits selection of state of charge at either at a first setting of a number or range of state of charge greater than 95% or at a second setting of a number or range of a state of charge of from 30% to 90%.

4. The thin film battery and charging system of claim 1, wherein the user controlled input permits selection of state of charge to define a minimum number of predicted charge cycles, which defined minimum number is greater than the predicted charge cycles of a battery having a state of charge greater than 95%.

5. The thin film battery and charging system of claim 1, wherein the integrated-circuit battery-charging and managing circuit comprises a control feature to limit the state of charge when the battery exceeds a temperature of 40°

C.

6. The thin film battery and charging system of claim 1, wherein the battery is a solid state battery.

7. The thin film battery and charging system of claim 1, wherein the battery forms a lithium metal anode during initial charge.

8. The thin film battery and charging system of claim 7, wherein the state of charge is controlled in at least one of the state of charge levels by limiting the charge potential to less than 4.05V.

9. The thin film battery and charging system of claim 7, wherein the state of charge is controlled in at least one of the state of charge levels by limiting discharge potential to more than 2.0V.

10. A method of charging a battery comprising

a) providing a thin film battery and charging system comprising:

a cathode material, a cathode current collector, an anode current collector, and an electrolyte layer separating the cathode material from the anode current collector configured to form a battery having at least one intercalating electrode;

an integrated-circuit battery-charging and managing circuit;

a user controlled input having selection capability for the user to choose from a plurality of levels of state of charge of the battery;

b) determining the level of state of charge desired for the battery based on an intended application of the battery; and

c) selecting the level of state of charge of the battery by operation of the user controlled input based on the determination of step b).

11. The method of claim 10, further comprising charging the battery to the desired state of charge.

12. The method of claim 11, further comprising disabling the charge operation once the desired state of charge is achieved.

13. The method of claim 12, further comprising exposing the battery to a temperature greater than 40°

C.