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1. 发明授权

US10084326B2 Highly accurate over current fault protection for battery packs 有权
公开(公告)号：US10084326B2
公开(公告)日：2018-09-25
申请号：US15167263
申请日：2016-05-27
申请人： Apple Inc.
发明人： Karthik Kadirvel , Soundararajan Manthiri
IPC分类号： H02J7/00 , H01M10/42 , H01M10/48 , H01M10/44 , H01M2/34
CPC分类号： H02J7/0026 , H01M2/34 , H01M10/425 , H01M10/441 , H01M10/482 , H01M2010/4271 , H01M2200/00 , H02J7/0031 , H02J7/0083 , H02J2007/0039
摘要： 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.

2. 发明申请

US20180262036A1 METHOD AND CIRCUITRY FOR BATTERY CHARGING 审中-公开
公开(公告)号：US20180262036A1
公开(公告)日：2018-09-13
申请号：US15455263
申请日：2017-03-10
申请人： NXP B.V.
发明人： Meng Wang
IPC分类号： H02J7/00 , G05F1/575
CPC分类号： H02J7/0083 , G05F1/575 , H02J7/0077 , H02J7/045
摘要： Battery charger circuitry includes a linear regulator and a current control loop. The linear regulator provides a constant current to a battery while the battery charger circuitry is in a current control mode. While the battery charger circuitry is in a constant voltage mode, the current control loop to: determine whether a charging current provided to the battery is less than an end of charging reference current; in response to the charging current being less than the end of charging reference current, to place the battery charger circuitry into an end of charging state; in response to the battery charger circuitry be placed the end of charging state, and to start a timer; and in response to the timer expiring, to enter the battery charger circuitry into a done state to end charging of the battery.

3. 发明申请

US20180123354A1 METHOD AND APPARATUS FOR CHARGING BATTERY 审中-公开
公开(公告)号：US20180123354A1
公开(公告)日：2018-05-03
申请号：US15782452
申请日：2017-10-12
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Ju Wan LIM , Jin Duk OH , Myunghoon KIM
IPC分类号： H02J7/00 , H02J7/02 , H01M10/44 , H01M10/46
CPC分类号： H02J7/008 , H01M10/425 , H01M10/44 , H01M10/46 , H02J7/0073 , H02J7/0081 , H02J7/0083 , H02J7/022
摘要： A battery charging method includes: charging a battery with a charging current; and changing the charging current in response to a current change event occurring during the charging of the battery, wherein the current change event occurs when the battery reaches a threshold voltage at which an anode potential of the battery reaches a reference value.

4. 发明申请

US20170288439A1 SIGNAL PROCESSING CIRCUIT, COULOMB COUNTER CIRCUIT, AND ELECTRONIC DEVICE 审中-公开
公开(公告)号：US20170288439A1
公开(公告)日：2017-10-05
申请号：US15474250
申请日：2017-03-30
申请人： ROHM CO., LTD.
发明人： Yoichi TAMEGAI
IPC分类号： H02J7/00 , G01R31/36 , H03M3/00
CPC分类号： H02J7/0078 , G01R31/3833 , H02J7/0047 , H02J7/0052 , H02J7/0083 , H02J7/0091 , H02J2007/005 , H02J2007/0059 , H03M3/378 , H03M3/468 , H03M3/472 , H03M3/498
摘要： A signal processing circuit includes: a plurality of A/D conversion units of a plurality of channels, each of plurality of the A/D conversion units including an amplifier configured to amplify an input analog signal and an A/D converter configured to convert an output signal from the amplifier into a digital signal, wherein at least one of operation parameters of the amplifier and the A/D converter is set individually for each of the plurality of channels.

5. 发明申请

US20160380447A1 Highly Accurate Over Current Fault Protection for Battery Packs 审中-公开
标题翻译：高精度过电流故障保护电池组
公开(公告)号：US20160380447A1
公开(公告)日：2016-12-29
申请号：US15167263
申请日：2016-05-27
申请人： Apple Inc.
发明人： Karthik Kadirvel , Soundararajan Manthiri
IPC分类号： H02J7/00 , H01M10/46 , H01M10/44 , H01M10/42 , H01M10/48
CPC分类号： H02J7/0026 , H01M2/34 , H01M10/425 , H01M10/441 , H01M10/482 , H01M2010/4271 , H01M2200/00 , H02J7/0031 , H02J7/0083 , H02J2007/0039
摘要： 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.
摘要翻译：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。

6. 发明申请

US20160233713A1 ADAPTIVE CHARGER WITH INPUT CURRENT LIMITATION AND CONTROLLING METHOD FOR THE SAME 审中-公开
标题翻译：具有输入电流限制的自适应充电器及其控制方法
公开(公告)号：US20160233713A1
公开(公告)日：2016-08-11
申请号：US15006978
申请日：2016-01-26
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Shuai Cheng
IPC分类号： H02J7/00
CPC分类号： H02J7/0083 , H02J7/0029 , H02J2007/0039
摘要： An adaptive charger can include: a power converter configured to receive an input current from an external power supply, and to generate an output current as a charging current to a load; a current feedback loop configured to compare a first detection signal that represents the input current against a first current reference signal, and to generate a first error signal, where the power converter is configured to regulate the input current according to the first error signal; and the current feedback loop being configured to determine an overload state of the external power supply according to an input voltage of the power converter, where the charger is configured to enter a current limit state when the external power supply is determined to be in the overload state, and where the first current reference signal is gradually reduced until the external power supply recovers to a non-overloaded state.
摘要翻译：自适应充电器可以包括：功率转换器，被配置为从外部电源接收输入电流，并且产生作为对负载的充电电流的输出电流; 电流反馈回路，被配置为将表示所述输入电流的第一检测信号与第一电流参考信号进行比较，并产生第一误差信号，其中所述功率转换器被配置为根据所述第一误差信号调节所述输入电流; 并且所述电流反馈回路被配置为根据所述功率转换器的输入电压来确定所述外部电源的过载状态，其中所述充电器被配置为当外部电源被确定为过载时进入电流极限状态状态，并且其中第一电流参考信号逐渐减小直到外部电源恢复到非过载状态。

7. 发明申请

US20160164319A1 SYSTEMS AND METHODS OF DIRECT CELL ATTACHMENT FOR BATTERIES 审中-公开
标题翻译：电池直接电池附着系统及方法
公开(公告)号：US20160164319A1
公开(公告)日：2016-06-09
申请号：US14961319
申请日：2015-12-07
申请人： Texas Instruments Incorporated
发明人： Karthik Kadirvel , Steve Harrell , Brian Lum-Shue-Chan
IPC分类号： H02J7/00
CPC分类号： H02J7/0029 , H02J7/0031 , H02J7/0034 , H02J7/0081 , H02J7/0083 , H02J7/0091 , H02J2007/0037 , H02J2007/0039
摘要： Embodiments of the systems and methods of direct cell attachment for battery cells disclosed herein operate without the protection FETs and the protection IC, thereby enabling the direct attachment of battery cells to the system without compromising safety. A charger IC comprises a switching regulator whose output is used to charge the battery through a pass device. In example embodiments of the disclosed systems and methods of direct cell attachment, a combination of switching FETs and the pass device are used as a protection device instead of the charge and discharge FETs. During normal operation, the pass device may be used to charge the battery using the traditional battery charging profile. Under fault condition, the switching FETs and pass device may be driven appropriately to protect the system.
摘要翻译：本文公开的用于电池单元的直接电池附接的系统和方法的实施例在没有保护FET和保护IC的情况下操作，从而使得能够将电池单元直接附接到系统而不损害安全性。充电器IC包括开关调节器，其输出用于通过通过装置对电池充电。在所公开的系统和直接电池附接的方法的示例实施例中，开关FET和通过装置的组合被用作保护装置，而不是充电和放电FET。在正常操作期间，通过装置可以用于使用传统的电池充电曲线对电池充电。在故障状态下，可以适当地驱动开关FET和通过器件来保护系统。

8. 发明授权

US09362774B2 Battery charging top-off 有权
标题翻译：充电电池充电
公开(公告)号：US09362774B2
公开(公告)日：2016-06-07
申请号：US13360520
申请日：2012-01-27
申请人： Reid K. Bornhoft
发明人： Reid K. Bornhoft
IPC分类号： H02J7/00
CPC分类号： H02J7/0083 , H02J7/0077
摘要： This disclosure describes techniques for a method of charging a battery. In an example, the method includes determining a capacity of the battery, and determining a state of charge of the battery. The method also includes charging the battery with a charging current, wherein the charging current is based on the capacity of the battery and the state of charge of the battery, and wherein charging the battery comprises reducing the charging current in response to the state of charge of the battery changing with respect to the capacity of the battery.
摘要翻译：本公开描述了对电池充电的方法的技术。在一个示例中，该方法包括确定电池的容量，以及确定电池的充电状态。该方法还包括用充电电流对电池充电，其中充电电流基于电池的容量和电池的充电状态，并且其中对电池充电包括响应于充电状态来减少充电电流电池相对于电池的容量而变化。

9. 发明授权

US09318911B2 Self-adaptive input power charger and method for controlling input current of charger 有权
标题翻译：自适应输入电源充电器和控制充电器输入电流的方法
公开(公告)号：US09318911B2
公开(公告)日：2016-04-19
申请号：US14073052
申请日：2013-11-06
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Jie Yao , Wei Chen , Chen Zhao , Shuai Cheng
IPC分类号： H02J7/00
CPC分类号： H02J7/0081 , H02J7/0083 , H02J7/0093
摘要： Disclosed herein are circuits and methods for limiting a charger input current. In one embodiment, a self-adaptive input power charger for charging a battery, can include: (i) a power stage circuit configured to receive an external input power supply that supplies an input voltage and an input current to the charger; (ii) a comparison circuit configured to generate a comparison result indicating that the input power supply has entered a current-limiting state when the input voltage is less than a first reference voltage; (iii) a current regulation circuit configured to generate a first control signal in response to the comparison result; and (iv) a driving control circuit configured to limit the input current by the first control signal.
摘要翻译：这里公开了限制充电器输入电流的电路和方法。在一个实施例中，一种用于对电池充电的自适应输入电力充电器可以包括：（i）功率级电路，被配置为接收向充电器提供输入电压和输入电流的外部输入电源; （ii）比较电路，被配置为当所述输入电压小于第一参考电压时产生指示所述输入电源已经进入限流状态的比较结果; （iii）电流调节电路，被配置为响应于比较结果产生第一控制信号; 以及（iv）驱动控制电路，被配置为通过第一控制信号来限制输入电流。

10. 发明授权

US09276431B2 Power management for electric vehicles 有权
标题翻译：电动汽车电力管理
公开(公告)号：US09276431B2
公开(公告)日：2016-03-01
申请号：US13692046
申请日：2012-12-03
申请人： O2Micro Inc.
发明人： Siyuan Gao , Wei Zhang , Wei Zhong , Catalin Popovici
IPC分类号： H02J7/00 , H02J7/04
CPC分类号： H02J7/0072 , H02J7/0031 , H02J7/0078 , H02J7/0083
摘要： An apparatus for managing power in an electric vehicle includes a control circuit and a first switch. The control circuit is configured to generate a first control signal based on a current of a battery operable for powering the electric vehicle, and to generate a second control signal based on a voltage of the battery. The first switch is configured to control connection of the battery to a power source and a load in the electric vehicle according to the first control signal. The first control signal controls a voltage at a terminal of the first switch to maintain the current of the battery to be substantially equal to a current setting, and the second control signal controls the battery to switch between a first state and a second state.
摘要翻译：一种用于管理电动车辆的动力的装置，包括控制电路和第一开关。控制电路被配置为基于可操作用于为电动车辆供电的电池的电流产生第一控制信号，并且基于电池的电压产生第二控制信号。第一开关被配置为根据第一控制信号来控制电池与电源和电动车辆中的负载的连接。第一控制信号控制第一开关的端子处的电压，以将电池的电流维持在基本上等于电流设定值，第二控制信号控制电池在第一状态和第二状态之间切换。

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