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公开(公告)号：US20180254641A1
公开(公告)日：2018-09-06
申请号：US15650888
申请日：2017-07-15
Applicant: Apple Inc.
Inventor： Karthik Kadirvel , Ankur Gupta , Hua Chen , Christopher C. Branson , David M. DeMuro , Alessandro Pelosi
CPC classification number: H02J7/0026 , G01R31/3658 , G01R31/3662 , H02J7/008 , Y02B40/90
Abstract: Battery packs that include multiple battery cells that may be monitored using a reduced amount of circuitry and battery systems that may account for battery cell changes over aging and temperature.
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公开(公告)号：US20160336773A1
公开(公告)日：2016-11-17
申请号：US15154345
申请日：2016-05-13
Applicant: Apple Inc.
Inventor： Karthik Kadirvel , Soundararajan Manthiri
IPC: H02J7/00
CPC classification number: H02J7/0026 , H02J7/0021 , H02J7/34
Abstract: 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.
Abstract translation: 通常，公开了用于向具有多个电池单元的电池组提供短路保护的技术，其中至少一些电池单元并联连接。 通过使用串联连接在电池单元的一个端子和电池组的公共节点之间的电子开关对（例如由设计为电池充电/放电开关的一对晶体管组成的集成电路）提供短路保护 - 位置是 常规电池组故障控制器上游。 所有这样的开关的状态可以由也在常规故障控制器的上游的控制单元控制。 开关对和控制单元的组合可以提供具有过流（短路）保护的电池组，而不使用热切断装置。 所描述的器件和系统还可以提供过压，欠压和过温保护。
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公开(公告)号：US20160182047A1
公开(公告)日：2016-06-23
申请号：US14705479
申请日：2015-05-06
Applicant: Apple Inc.
Inventor： Gary L. Stirk , Karthik Kadirvel
IPC: H03K19/0175
CPC classification number: H03K19/017509 , G01R31/3655 , G01R31/3675 , G06F13/4256 , H02J7/0021 , H02J7/0026 , H02J7/0052 , H02J7/0068 , H02J7/007 , H02J2007/0059 , H03L7/00 , Y02D10/14 , Y02D10/151
Abstract: A system may include a plurality of units, wherein each unit has a respective common mode voltage terminal, communication up terminal, and communication down terminal. A first unit of the plurality of units may be configured to generate a first plurality of currents on its communication up terminal, wherein the first plurality of currents corresponds to a first plurality of bits. A second unit of the plurality of units may be configured to receive the first plurality of currents on its respective communication down terminal, and maintain a voltage level at its respective communication down terminal during reception of the first plurality of currents. The voltage level may be equal to a common mode voltage of the respective common mode voltage terminal of the second unit.
Abstract translation: 系统可以包括多个单元，其中每个单元具有相应的共模电压端子，通信上行端子和通信下降端子。 多个单元中的第一单元可以被配置为在其通信上行终端上产生第一多个电流，其中第一多个电流对应于第一多个位。 多个单元中的第二单元可以被配置为在其各自的通信下行终端接收第一多个电流，并且在接收第一多个电流期间在其各自的通信下行端子处保持电压电平。 电压电平可以等于第二单元的各个共模电压端子的共模电压。
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公开(公告)号：US10211653B2
公开(公告)日：2019-02-19
申请号：US15650888
申请日：2017-07-15
Applicant: Apple Inc.
Inventor： Karthik Kadirvel , Ankur Gupta , Hua Chen , Christopher C. Branson , David M. DeMuro , Alessandro Pelosi
Abstract: Battery packs that include multiple battery cells that may be monitored using a reduced amount of circuitry and battery systems that may account for battery cell changes over aging and temperature.
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公开(公告)号：US10724978B2
公开(公告)日：2020-07-28
申请号：US16147510
申请日：2018-09-28
Applicant: Apple Inc.
Inventor： Saroj K. Sahu , Karthik Kadirvel
Abstract: A portable communication device includes one or more sensors, a pair of electrodes associated with each sensor, and a processing circuit configured to apply a bias supply voltage to the pair of electrodes and to process output signals from the sensors. Each sensor is an ionic liquid sensor tuned for sensing a smell associated with a chemical species. The processing circuit further includes an artificial intelligence engine to enhance smell recognition capabilities of the device.
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Patent Agency Ranking
公开(公告)号：US10084326B2
公开(公告)日：2018-09-25
申请号：US15167263
申请日：2016-05-27
Applicant: Apple Inc.
Inventor： Karthik Kadirvel , Soundararajan Manthiri
CPC classification number: H02J7/0026 , H01M2/34 , H01M10/425 , H01M10/441 , H01M10/482 , H01M2010/4271 , H01M2200/00 , H02J7/0031 , H02J7/0083 , H02J2007/0039
Abstract: 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. Through the use of novel circuit designs disclosed herein that effectively “bypass” the traditional “power FETs” that control the current flow to the battery pack(s) of the electronic device using a novel “sense FET” concept, the major sources of error in current sensing may be eliminated without compromising any safety features of the electronic device, thus allowing for more accurate over current fault protection systems for battery packs across a wide range of operating conditions and temperatures.
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公开(公告)号：US20160380447A1
公开(公告)日：2016-12-29
申请号：US15167263
申请日：2016-05-27
Applicant: Apple Inc.
Inventor： Karthik Kadirvel , Soundararajan Manthiri
CPC classification number: H02J7/0026 , H01M2/34 , H01M10/425 , H01M10/441 , H01M10/482 , H01M2010/4271 , H01M2200/00 , H02J7/0031 , H02J7/0083 , H02J2007/0039
Abstract: 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. Through the use of novel circuit designs disclosed herein that effectively “bypass” the traditional “power FETs” that control the current flow to the battery pack(s) of the electronic device using a novel “sense FET” concept, the major sources of error in current sensing may be eliminated without compromising any safety features of the electronic device, thus allowing for more accurate over current fault protection systems for battery packs across a wide range of operating conditions and temperatures.
Abstract translation: 本公开一般涉及在充电系统中提供高精度过电流故障保护的领域，更具体地说，涉及在电子设备中充电过电流保护（COCP）和放电过电流保护（DOCP）电路特别有弹性的系统 对于具有温度，栅极驱动和/或工艺偏移的场效应晶体管（FET）电阻的变化; 印刷电路板（PCB）电阻的变化; 以及集成电路（IC）跳闸电压的变化。 通过使用本文公开的新颖的电路设计，有效地“绕过”传统的“功率FET”，其使用新颖的“感测FET”概念来控制电流到电池组的电池组的电流，主要的误差源 可以消除电流感测，而不会影响电子设备的任何安全特征，从而允许在宽范围的工作条件和温度下对电池组进行更精确的过电流故障保护系统。
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公开(公告)号：US10355497B2
公开(公告)日：2019-07-16
申请号：US15154345
申请日：2016-05-13
Applicant: Apple Inc.
Inventor： Karthik Kadirvel , Soundararajan Manthiri
Abstract: 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.
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公开(公告)号：US10236694B2
公开(公告)日：2019-03-19
申请号：US15662408
申请日：2017-07-28
Applicant: Apple Inc.
Inventor： Thomas C. Greening , Karthik Kadirvel , Gary L. Stirk , Saroj K. Sahu , Kamran M. Hasan
Abstract: This disclosure describes a battery pack that includes a plurality of asymmetrical banks, with different capacities and/or voltages, and multiple taps, coupled to the corresponding banks, to power electrical loads. The battery pack also comprise a balancing circuit and a battery management unit. The battery pack may regulate voltages among the banks and/or balance the states of charge among the asymmetrical banks, by moving charges among the banks, by controlling one or more converters. The battery pack monitors the status of its banks and communicate with a host system via the battery management unit. Based on the monitored information and/or communication, the battery management unit generates control signals to drive the one or more converters.
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公开(公告)号：US20180034288A1
公开(公告)日：2018-02-01
申请号：US15662408
申请日：2017-07-28
Applicant: Apple Inc.
Inventor： Thomas C. Greening , Karthik Kadirvel , Gary L. Stirk , Saroj K. Sahu , Kamran M. Hasan
IPC: H02J7/00
CPC classification number: H02J7/0019 , H01M10/425 , H01M10/441 , H01M2010/4271 , H02J7/0022 , H02J7/0026 , H02J7/0077 , H02J2007/0098
Abstract: This disclosure describes a battery pack that includes a plurality of asymmetrical banks, with different capacities and/or voltages, and multiple taps, coupled to the corresponding banks, to power electrical loads. The battery pack also comprise a balancing circuit and a battery management unit. The battery pack may regulate voltages among the banks and/or balance the states of charge among the asymmetrical banks, by moving charges among the banks, by controlling one or more converters. The battery pack monitors the status of its banks and communicate with a host system via the battery management unit. Based on the monitored information and/or communication, the battery management unit generates control signals to drive the one or more converters.
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