Invention Grant
US08410783B2 Detecting an end of life for a battery using a difference between an unloaded battery voltage and a loaded battery voltage
有权
使用未加载的电池电压和负载的电池电压之间的差异来检测电池的使用寿命
- Patent Title: Detecting an end of life for a battery using a difference between an unloaded battery voltage and a loaded battery voltage
- Patent Title (中): 使用未加载的电池电压和负载的电池电压之间的差异来检测电池的使用寿命
-
Application No.: US12570622Application Date: 2009-09-30
-
Publication No.: US08410783B2Publication Date: 2013-04-02
- Inventor: Kenneth L. Staton
- Applicant: Kenneth L. Staton
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Park, Vaughan, Fleming & Dowler LLP
- Main IPC: G01N27/416
- IPC: G01N27/416
Abstract:
One particular implementation conforming to aspects of the present invention takes the form of a method for detecting the end of life of a battery for an electronic device. The method may include calculating the voltage of the battery in an unloaded state, holding the sampled unloaded battery voltage, measuring a loaded battery voltage, calculating the difference between the unloaded and loaded battery voltages and amplifying the calculated difference. Other implementations may take the form of a circuit to perform one or more of the operations of the above method. The circuit may include a sample and hold section and a differential amplifier to provide the amplified difference to a microcontroller for analysis. The microcontroller may also provide a warning or indication to the device or to a user of the device when the battery nears the end of life.
Public/Granted literature
- US20110074434A1 END OF LIFE DETECTION FOR A BATTERY Public/Granted day:2011-03-31
Information query
