Method and apparatus for varying the sample rate of a fast batte

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

320 37, H02J 704

Patent

active

052686302

ABSTRACT:
This invention discloses a method and apparatus for rapidly charging a battery by monitoring the voltage of the battery and changing the effective sampling rate of the battery voltage during the charging sequence. More particularly, a first disclosed embodiment of the battery charging system takes voltage readings of the battery as it is being charged at a predetermined rate and stores the voltage values in a first-in, first-out stack in the order in which they are taken. Therefore, a stack of consecutive data samples spaced in time is created. During an interval in the charging sequence where the rate of increase in battery voltage is relatively low, the charging system retrieves voltage values from the stack which are widely separated in time to calculate a slope of the charging profile to determine the status of the charging sequence. During a second interval of the charging sequence when the rate of increase in battery voltage is relatively high, the effective sampling rate is reduced by taking sample points from the stack which are closer together in time. In this manner, the effective sampling rate of the charging system is changed to improve the effective signal-to-noise ratio of the system during the first interval while maintaining an appropriately fast response time during the second interval. An alternative embodiment is disclosed which changes the rate at which the battery voltage is sampled from the first to the second interval in the charging sequence.

REFERENCES:
patent: 4388582 (1983-06-01), Saar et al.
patent: 4392101 (1983-07-01), Saar et al.
patent: 4418310 (1983-11-01), Bollinger
patent: 4639655 (1987-01-01), Westhaver et al.
patent: 4677363 (1987-06-01), Kopmann
patent: 4767977 (1988-08-01), Fasen et al.
patent: 4806840 (1989-02-01), Alexander et al.
patent: 5027294 (1991-06-01), Fakruddin et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for varying the sample rate of a fast batte does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for varying the sample rate of a fast batte, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for varying the sample rate of a fast batte will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2018218

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.