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Context-aware battery charging

A battery and situational technology, applied in secondary battery charging/discharging, battery circuit devices, batteries, etc., can solve the problem of expensive rechargeable batteries

Active Publication Date: 2017-04-19
NOKIA TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Replacing rechargeable batteries frequently is expensive

Method used

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  • Context-aware battery charging
  • Context-aware battery charging
  • Context-aware battery charging

Examples

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Embodiment Construction

[0015] by referring to the attached Figure 1 to Figure 4 Understand example embodiments of the invention and its potential advantages.

[0016] figure 1 is an illustration of a device 100 powered by a rechargeable battery 114 (hereinafter generally referred to as a battery) including means for context-aware charging of the battery, according to an example embodiment. The device includes: a monitoring unit 102 configured to monitor all parts of the device and corresponding activities; a charging control unit 104 configured to, based on information obtained from the monitoring unit 102, control the transfer from the charger interface (IF) 112 to The charging voltage and charging current of the battery 114. For example, the charger IF 112 may be of different types such as a car mains charger, a wall outlet charger, or a micro USB charger. For car-mode charging, it can be identified by monitoring motion sensors 110 , car connection activity 120 (eg, Bluetooth, wireless local a...

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Abstract

According to an exemplary embodiment of the present invention, an apparatus comprising a monitoring unit (102) and a charging control unit (104) is provided. The monitoring unit is configured to monitor at least one data acquisition source of a device (100) powered by a rechargeable battery (114), and to estimate a context of the device based on data obtained from the at least one data acquisition source. The charging control unit (104) is configured to dynamically adjust the charging voltage and charging current applied to the rechargeable battery (114) based on an estimated situation of the device obtained from the monitoring unit (102). The battery (114) includes at least one battery cell.

Description

technical field [0001] The present application relates generally to smart battery charging technology, and more particularly to methods and apparatus for intelligently charging battery-operated devices based at least in part on the context of the device. Background technique [0002] Lithium-based rechargeable batteries are conventionally charged by using a constant current-constant voltage (CC-CV) method. The charge voltage rises rapidly to the upper cell voltage limit, typically 4.2Vpc (voltage per cell), and then remains at this level. The cell current remains constant as the charging voltage rises, and starts to drop when the charging voltage reaches the upper limit level. When the charging current reaches a predetermined minimum current point indicating a full charge, the charging current is cut off. [0003] All batteries have a finite life. The charging rate of a rechargeable battery has a great influence on the length of life of the battery. Fast charging increas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/48
CPCH01M10/052H01M10/44H01M10/443H01M10/48H01M10/486H01M2010/4271H01M2220/30B60L1/006H02J7/007188Y02E60/10H02J7/04H02J7/007194H02J7/007182
Inventor R·S·贝里奎斯特K·S·瓦卢M·J·特鲁伯格
Owner NOKIA TECH OY