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"New Methodology To Enhance The Cycle Life Of Secondary Batteries"
Abstract: A method of enhancing the life cycle of secondary batteries is disclosed. The method involves identifying an appropriate voltage range for charging and discharging the battery with minimum charge transfer resistance. The method comprises obtaining electrochemical impedance spectra at various voltage steps during charging of the battery/cell, fitting the data to an equivalent electrical circuit model. Parameters are then extracted from the electrical circuit model, and analyzed to find the charge transfer resistance for each voltage step. Capacity loss is estimated as a function of charge voltage through analysis of charge transfer resistance. Charging is then done at a voltage range with minimum charge transfer resistance, whereby the cell is used with minimum loss of capacity and enhanced life.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
25 February 2017
Publication Number
35/2018
Publication Type
INA
Invention Field
ELECTRONICS
Status
Email
indiafiling@deeptech-ip.com
Parent Application
Patent Number
Legal Status
Grant Date
2024-01-04
Renewal Date
Applicants
Indian Institute of Technology
The Dean,
Industrial Consultancy & Sponsored Research [ICSR]
Indian Institute of Technology Madras, IIT P.O.
CHENNAI, India
Inventors
1. Prof. RAMAPRABHU, Sundara
Department Physics, Indian
Institute of Technology Madras, IIT P.O. Chennai – 600 036, India
2. Mr. RAGHU, Sripada
Department of Physics, Indian
Institute of Technology Madras, IIT P.O. Chennai – 600 036, India
3. Ms. GANGADHARAN, Ananya
Department of Physics, Indian
Institute of Technology Madras, IIT P.O. Chennai – 600 036, India
Specification
Claims:As attached. , Description:As attached.
Documents
Orders
| Section | Controller | Decision Date |
|---|---|---|
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 201741006716-EDUCATIONAL INSTITUTION(S) [04-04-2024(online)].pdf | 2024-04-04 |
| 1 | Power of Attorney [25-02-2017(online)].pdf | 2017-02-25 |
| 2 | 201741006716-IntimationOfGrant04-01-2024.pdf | 2024-01-04 |
| 2 | Form 5 [25-02-2017(online)].pdf | 2017-02-25 |
| 3 | Form 3 [25-02-2017(online)].pdf | 2017-02-25 |
| 3 | 201741006716-PatentCertificate04-01-2024.pdf | 2024-01-04 |
| 4 | Drawing [25-02-2017(online)].pdf | 2017-02-25 |
| 4 | 201741006716-Annexure [03-01-2024(online)]-1.pdf | 2024-01-03 |
| 5 | Description(Complete) [25-02-2017(online)].pdf_701.pdf | 2017-02-25 |
| 5 | 201741006716-Annexure [03-01-2024(online)].pdf | 2024-01-03 |
| 6 | Description(Complete) [25-02-2017(online)].pdf | 2017-02-25 |
| 6 | 201741006716-Response to office action [03-01-2024(online)]-1.pdf | 2024-01-03 |
| 7 | Form 18 [01-03-2017(online)].pdf | 2017-03-01 |
| 7 | 201741006716-Response to office action [03-01-2024(online)].pdf | 2024-01-03 |
| 8 | Other Patent Document [15-05-2017(online)].pdf | 2017-05-15 |
| 8 | 201741006716-Written submissions and relevant documents [03-01-2024(online)].pdf | 2024-01-03 |
| 9 | 201741006716-Correspondence to notify the Controller [19-12-2023(online)].pdf | 2023-12-19 |
| 9 | 201741006716-OTHERS [12-03-2021(online)].pdf | 2021-03-12 |
| 10 | 201741006716-FORM-26 [12-03-2021(online)].pdf | 2021-03-12 |
| 10 | 201741006716-US(14)-HearingNotice-(HearingDate-21-12-2023).pdf | 2023-11-15 |
| 11 | 201741006716-EVIDENCE OF ELIGIBILTY RULE 24C1h [14-11-2023(online)].pdf | 2023-11-14 |
| 11 | 201741006716-FER_SER_REPLY [12-03-2021(online)].pdf | 2021-03-12 |
| 12 | 201741006716-CLAIMS [12-03-2021(online)].pdf | 2021-03-12 |
| 12 | 201741006716-FORM 18A [14-11-2023(online)].pdf | 2023-11-14 |
| 13 | 201741006716-EDUCATIONAL INSTITUTION(S) [13-05-2022(online)].pdf | 2022-05-13 |
| 13 | 201741006716-FORM-8 [29-03-2021(online)].pdf | 2021-03-29 |
| 14 | 201741006716-EVIDENCE FOR REGISTRATION UNDER SSI [13-05-2022(online)].pdf | 2022-05-13 |
| 14 | 201741006716-FER.pdf | 2021-10-17 |
| 15 | 201741006716-FORM 13 [13-05-2022(online)].pdf | 2022-05-13 |
| 15 | 201741006716-RELEVANT DOCUMENTS [13-05-2022(online)].pdf | 2022-05-13 |
| 16 | 201741006716-POA [13-05-2022(online)].pdf | 2022-05-13 |
| 17 | 201741006716-RELEVANT DOCUMENTS [13-05-2022(online)].pdf | 2022-05-13 |
| 17 | 201741006716-FORM 13 [13-05-2022(online)].pdf | 2022-05-13 |
| 18 | 201741006716-FER.pdf | 2021-10-17 |
| 18 | 201741006716-EVIDENCE FOR REGISTRATION UNDER SSI [13-05-2022(online)].pdf | 2022-05-13 |
| 19 | 201741006716-EDUCATIONAL INSTITUTION(S) [13-05-2022(online)].pdf | 2022-05-13 |
| 19 | 201741006716-FORM-8 [29-03-2021(online)].pdf | 2021-03-29 |
| 20 | 201741006716-CLAIMS [12-03-2021(online)].pdf | 2021-03-12 |
| 20 | 201741006716-FORM 18A [14-11-2023(online)].pdf | 2023-11-14 |
| 21 | 201741006716-EVIDENCE OF ELIGIBILTY RULE 24C1h [14-11-2023(online)].pdf | 2023-11-14 |
| 21 | 201741006716-FER_SER_REPLY [12-03-2021(online)].pdf | 2021-03-12 |
| 22 | 201741006716-FORM-26 [12-03-2021(online)].pdf | 2021-03-12 |
| 22 | 201741006716-US(14)-HearingNotice-(HearingDate-21-12-2023).pdf | 2023-11-15 |
| 23 | 201741006716-Correspondence to notify the Controller [19-12-2023(online)].pdf | 2023-12-19 |
| 23 | 201741006716-OTHERS [12-03-2021(online)].pdf | 2021-03-12 |
| 24 | Other Patent Document [15-05-2017(online)].pdf | 2017-05-15 |
| 24 | 201741006716-Written submissions and relevant documents [03-01-2024(online)].pdf | 2024-01-03 |
| 25 | Form 18 [01-03-2017(online)].pdf | 2017-03-01 |
| 25 | 201741006716-Response to office action [03-01-2024(online)].pdf | 2024-01-03 |
| 26 | Description(Complete) [25-02-2017(online)].pdf | 2017-02-25 |
| 26 | 201741006716-Response to office action [03-01-2024(online)]-1.pdf | 2024-01-03 |
| 27 | Description(Complete) [25-02-2017(online)].pdf_701.pdf | 2017-02-25 |
| 27 | 201741006716-Annexure [03-01-2024(online)].pdf | 2024-01-03 |
| 28 | Drawing [25-02-2017(online)].pdf | 2017-02-25 |
| 28 | 201741006716-Annexure [03-01-2024(online)]-1.pdf | 2024-01-03 |
| 29 | Form 3 [25-02-2017(online)].pdf | 2017-02-25 |
| 29 | 201741006716-PatentCertificate04-01-2024.pdf | 2024-01-04 |
| 30 | Form 5 [25-02-2017(online)].pdf | 2017-02-25 |
| 30 | 201741006716-IntimationOfGrant04-01-2024.pdf | 2024-01-04 |
| 31 | 201741006716-EDUCATIONAL INSTITUTION(S) [04-04-2024(online)].pdf | 2024-04-04 |
| 31 | Power of Attorney [25-02-2017(online)].pdf | 2017-02-25 |
Search Strategy
| 1 | SearchStrategyMatrix201741006716_10-12-2019.pdf |
| 1 | searchstrategytpo201741006716amendedAE_05-04-2021.pdf |
| 2 | SearchStrategyMatrix201741006716_10-12-2019.pdf |
| 2 | searchstrategytpo201741006716amendedAE_05-04-2021.pdf |