Systems, methods and devices for adaptable battery charging

    公开(公告)号:US09728995B2

    公开(公告)日:2017-08-08

    申请号:US14681810

    申请日:2015-04-08

    Abstract: Because a rechargeable battery has an increased number of uses (e.g., cycles), the battery's internal impedance can increase and the efficiency of the battery can become degraded. This internal resistance can cause cutoff voltage thresholds and cutoff current thresholds to prematurely stop a phase of battery charging, as these cutoff values can be based on low-cycle count batteries. New cutoff values can, instead, be based on battery impedance. Use of an adjusted cutoff current threshold during a constant voltage cycle can increase the capacity of high-cycle count batteries. Use of an adjusted cutoff voltage threshold in step charging can increase the charging speed of high-cycle count batteries. These increases in efficiency by using adjusted cutoff values can increase as the battery is further high-cycle count, in comparison with low-cycle count cutoff values used with high-cycle count batteries.

    INFERENCE BASED FAST CHARGING
    6.
    发明申请

    公开(公告)号:US20210336464A1

    公开(公告)日:2021-10-28

    申请号:US16860927

    申请日:2020-04-28

    Abstract: A scheme to initiate fast charging of a battery based on inference, situation, and/or need. The scheme uses a situational fast charging algorithm that detects user's situation and judges if fast battery charging is needed and enables fast charging. Once the need for fast charging need is detected, there are at least two options to follow. In the first option, when a charger cannot provide enough power to support both system and battery fast charging, the system turns down system power (e.g., reduces display brightness) and starts fast charging with available charger power to a sufficient charge level. In the second option, when a charger can provide enough power to support both system and battery fast charging, the system starts fast charging to a sufficient charge level.

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