Patents by Inventor Soundararajan Manthiri
Soundararajan Manthiri has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230231207Abstract: Embodiments of the present disclosure provide systems and methods for a dynamic energy storage system. An exemplary aspect of this disclosure relates to an energy storage system comprising a control unit; a bus; a first electrical storage unit; a second electrical storage unit; a first connection circuit configured to move between a first open position, a first closed position, and/or a first bypass position, wherein the first electrical storage unit is electrically connected to the bus when the first connection circuit is in the first closed position, and a second connection circuit configured to move between a second closed position, a second open position, and/or a second bypass position, wherein the second electrical storage unit is electrically connected to the bus when the second connection circuit is in the second closed position, wherein the first control unit is configured to operate to change positions of the first connection circuit and the second connection circuit.Type: ApplicationFiled: January 18, 2022Publication date: July 20, 2023Applicant: SUPERNAL, LLCInventors: Thanh Tuan TRAN, Soundararajan MANTHIRI
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Patent number: 11539086Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: GrantFiled: November 16, 2020Date of Patent: December 27, 2022Assignee: APPLE INC.Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundararajan Manthiri, Vijayasekaran Boovaragavan
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Publication number: 20210075068Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: ApplicationFiled: November 16, 2020Publication date: March 11, 2021Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundararajan Manthiri, Vijayasekaran Boovaragavan
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Patent number: 10830821Abstract: This application relates to methods and apparatus for predicting power and energy availability of a battery. The prediction is made based on a given amount of time, which represents a period in which the battery may be required to operate. Additionally, a learning cycle is incorporated to update a battery model of the battery with certain parameters. The battery model is updated by introducing a time-varying current to the battery and analyzing the voltage response of the battery. A model-based predictive algorithm is used in combination with the battery model to predict battery output parameters based on variables derived from the learning cycle and additional inputs supplied to the model-based predictive algorithm. After one or more iterations, or using a simplified model-based equation, the model-based predictive algorithm can provide an accurate prediction for the maximum current that the battery can supply for a predetermined period of time.Type: GrantFiled: January 26, 2015Date of Patent: November 10, 2020Assignee: Apple Inc.Inventors: Yiming Lou, Soundararajan Manthiri
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Patent number: 10826313Abstract: Power management systems for an electronic product demonstration fixture for demonstrating portable electronic devices. The product demonstration fixture may include an exhibition portion and a base portion. A portable electronic device offered for sale may be affixed to the exhibition portion. The base portion may include an electronic display, an auxiliary battery, and an auxiliary controller. The auxiliary controller may direct power from the auxiliary battery to the electronic display upon determining that a battery within the electronic display has fallen below a particular selected level. Similarly the auxiliary controller may direct power from the auxiliary battery to the portable electronic device offered for sale upon determining that a battery within the portable electronic device has fallen below a selected level.Type: GrantFiled: January 8, 2016Date of Patent: November 3, 2020Assignee: Apple Inc.Inventors: Emery A. Sanford, David G. Havskjold, Steven G. Herbst, Anthony S. Montevirgen, Jeffery J. Terlizzi, Tyson B. Manullang, Charles A. Schwalbach, Glenn David Henshaw, Vikas Agrawal, Soundararajan Manthiri
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Patent number: 10355497Abstract: In general, techniques are disclosed for providing short circuit protection to a battery pack having a number of battery cells, at least some of which are connected in parallel. Short circuit protection is provided by using pairs of electronic switches (e.g., integrated circuits consisting of a pair of transistors designed as battery charge/discharge switches) serially connected between one terminal of a battery cell and a battery pack's common node—a position which is upstream of conventional battery pack fault controllers. The state of all such switches may be controlled by a control unit that is also upstream of a conventional fault controller. The combination of switch pairs and control unit can provide a battery pack with over current (short circuit) protection without the use of thermal cutoff devises. The described devices and systems can also provide over voltage, under voltage and over temperature protection.Type: GrantFiled: May 13, 2016Date of Patent: July 16, 2019Assignee: Apple Inc.Inventors: Karthik Kadirvel, Soundararajan Manthiri
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Publication number: 20180337537Abstract: This disclosure relates generally to the field of providing highly accurate over current fault protection in charging systems and, more particularly, to systems in which the charge over current protection (COCP) and discharge over current protection (DOCP) circuitry in electronic devices are particularly resilient to variations in field-effect transistor (FET) resistance with temperature, gate drive, and/or process shift; variations in printed circuit board (PCB) resistance; and variations in integrated circuit (IC) trip voltages.Type: ApplicationFiled: July 31, 2018Publication date: November 22, 2018Inventors: Karthik Kadirvel, Soundararajan Manthiri
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Patent number: 10084326Abstract: This disclosure relates generally to the field of providing highly accurate over current fault protection in charging systems and, more particularly, to systems in which the charge over current protection (COCP) and discharge over current protection (DOCP) circuitry in electronic devices are particularly resilient to variations in field-effect transistor (FET) resistance with temperature, gate drive, and/or process shift; variations in printed circuit board (PCB) resistance; and variations in integrated circuit (IC) trip voltages.Type: GrantFiled: May 27, 2016Date of Patent: September 25, 2018Assignee: Apple Inc.Inventors: Karthik Kadirvel, Soundararajan Manthiri
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Patent number: 10044075Abstract: An electronic device that displays a battery status is described. In particular, based on the occurrence or presence of an environmental condition (such as an extrinsic environmental factor and/or a current electronic-device usage factor), the electronic device may determine an inaccessible-charge condition of a battery in the electronic device. For example, the environmental condition may include: a temperature of the battery less than the temperature threshold value; and/or a discharge rate of the battery greater than the discharge threshold value. In response to the inaccessible-charge condition, the electronic device may display indications of two or more battery-charge parameters, including: an accessible battery charge, an inaccessible battery charge that is currently unavailable for use because of the environmental condition, and/or a total battery charge.Type: GrantFiled: September 12, 2016Date of Patent: August 7, 2018Assignee: Apple Inc.Inventors: Nalin Chaturvedi, Stephen D. Sterz, Soundararajan Manthiri
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Publication number: 20180076492Abstract: An electronic device that displays a battery status is described. In particular, based on the occurrence or presence of an environmental condition (such as an extrinsic environmental factor and/or a current electronic-device usage factor), the electronic device may determine an inaccessible-charge condition of a battery in the electronic device. For example, the environmental condition may include: a temperature of the battery less than the temperature threshold value; and/or a discharge rate of the battery greater than the discharge threshold value. In response to the inaccessible-charge condition, the electronic device may display indications of two or more battery-charge parameters, including: an accessible battery charge, an inaccessible battery charge that is currently unavailable for use because of the environmental condition, and/or a total battery charge.Type: ApplicationFiled: September 12, 2016Publication date: March 15, 2018Inventors: Nalin CHATURVEDI, Stephen D. STERZ, Soundararajan MANTHIRI
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Patent number: 9917335Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: GrantFiled: August 28, 2015Date of Patent: March 13, 2018Assignee: APPLE INC.Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundararajan Manthiri, Vijayasekaran Boovaragavan
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Patent number: 9882407Abstract: The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system attempts to regulate a voltage on a battery terminal in the portable electronic device to a first voltage level. Upon identifying an inability to regulate the voltage on the battery terminal to the first voltage level during a first detection period, the system detects a presence of the battery in the portable electronic device.Type: GrantFiled: September 4, 2015Date of Patent: January 30, 2018Assignee: Apple Inc.Inventors: Jose V. Santos, Yongxuan Hu, Steve Sterz, Rob Hoyt, Soundararajan Manthiri
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Publication number: 20160380447Abstract: This disclosure relates generally to the field of providing highly accurate over current fault protection in charging systems and, more particularly, to systems in which the charge over current protection (COCP) and discharge over current protection (DOCP) circuitry in electronic devices are particularly resilient to variations in field-effect transistor (FET) resistance with temperature, gate drive, and/or process shift; variations in printed circuit board (PCB) resistance; and variations in integrated circuit (IC) trip voltages.Type: ApplicationFiled: May 27, 2016Publication date: December 29, 2016Inventors: Karthik Kadirvel, Soundararajan Manthiri
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Publication number: 20160336773Abstract: In general, techniques are disclosed for providing short circuit protection to a battery pack having a number of battery cells, at least some of which are connected in parallel. Short circuit protection is provided by using pairs of electronic switches (e.g., integrated circuits consisting of a pair of transistors designed as battery charge/discharge switches) serially connected between one terminal of a battery cell and a battery pack's common node—a position which is upstream of conventional battery pack fault controllers. The state of all such switches may be controlled by a control unit that is also upstream of a conventional fault controller. The combination of switch pairs and control unit can provide a battery pack with over current (short circuit) protection without the use of thermal cutoff devises. The described devices and systems can also provide over voltage, under voltage and over temperature protection.Type: ApplicationFiled: May 13, 2016Publication date: November 17, 2016Inventors: Karthik Kadirvel, Soundararajan Manthiri
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Publication number: 20160126761Abstract: Power management systems for an electronic product demonstration fixture for demonstrating portable electronic devices. The product demonstration fixture may include an exhibition portion and a base portion. A portable electronic device offered for sale may be affixed to the exhibition portion. The base portion may include an electronic display, an auxiliary battery, and an auxiliary controller. The auxiliary controller may direct power from the auxiliary battery to the electronic display upon determining that a battery within the electronic display has fallen below a particular selected level. Similarly the auxiliary controller may direct power from the auxiliary battery to the portable electronic device offered for sale upon determining that a battery within the portable electronic device has fallen below a selected level.Type: ApplicationFiled: January 8, 2016Publication date: May 5, 2016Inventors: Emery A. Sanford, David G. Havskjold, Steven G. Herbst, Anthony S. Montevirgen, Jeffery J. Terlizzi, Tyson B. Manullang, Charles A. Schwalbach, Glenn David Henshaw, Vikas Agrawal, Soundararajan Manthiri
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Publication number: 20160093921Abstract: A battery system has positive and negative pack terminals, and positive and negative sense terminals. An electrochemical cell assembly has positive and negative cell terminals. An electrically conductive power path has a positive leg that connects the positive cell terminal to the positive pack terminal, and a negative leg that connects the negative cell terminal to the negative pack terminal. A power switch circuit is connected in the power path. An electrically conductive sense path separate from the power path has a positive leg that connects the positive cell terminal to the positive sense terminal, and a negative leg that connects to the negative sense terminal. A sense switch circuit is connected in the sense path. Other embodiments are also described and claimed.Type: ApplicationFiled: July 20, 2015Publication date: March 31, 2016Inventors: Karthik Kadirvel, Soundararajan Manthiri, Salvatore Reddiconto, Liquan Tan
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Publication number: 20160072314Abstract: The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system attempts to regulate a voltage on a battery terminal in the portable electronic device to a first voltage level. Upon identifying an inability to regulate the voltage on the battery terminal to the first voltage level during a first detection period, the system detects a presence of the battery in the portable electronic device.Type: ApplicationFiled: September 4, 2015Publication date: March 10, 2016Inventors: Jose V. Santos, Yongxuan Hu, Steve Sterz, Rob Hoyt, Soundararajan Manthiri
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Publication number: 20160064780Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: ApplicationFiled: August 28, 2015Publication date: March 3, 2016Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundararajan Manthiri, Vijayasekaran Boovaragavan
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Publication number: 20150316618Abstract: This application relates to methods and apparatus for predicting power and energy availability of a battery. The prediction is made based on a given amount of time, which represents a period in which the battery may be required to operate. Additionally, a learning cycle is incorporated to update a battery model of the battery with certain parameters. The battery model is updated by introducing a time-varying current to the battery and analyzing the voltage response of the battery. A model-based predictive algorithm is used in combination with the battery model to predict battery output parameters based on variables derived from the learning cycle and additional inputs supplied to the model-based predictive algorithm. After one or more iterations, or using a simplified model-based equation, the model-based predictive algorithm can provide an accurate prediction for the maximum current that the battery can supply for a predetermined period of time.Type: ApplicationFiled: January 26, 2015Publication date: November 5, 2015Inventors: Yiming LOU, Soundararajan MANTHIRI
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Patent number: 7263453Abstract: Methods and apparatus for detecting a sensor angle error in a system in which a measured quantity is determined on the basis of a phase of a signal. A signal derived from the measurement of multiple sensors is ascribed to a vector in a two-dimensional space, and a norm is calculated characterizing that vector. A value is calculated characterizing variation of that norm over a specified period of time and that value is compared with a threshold in order to identify a sensor fault.Type: GrantFiled: January 19, 2005Date of Patent: August 28, 2007Assignee: DEKA Products Limited PartnershipInventors: Michael Thomas Gansler, Michael Field Kaufman, Soundararajan Manthiri, David W. Robinson, Jason M. Sachs