Topic
Memory effect
About: Memory effect is a research topic. Over the lifetime, 52 publications have been published within this topic receiving 918 citations.
Papers published on a yearly basis
Papers
TL;DR: Boostcharging is proposed as a new, ultra-fast, recharging algorithm for Li-ion batteries as discussed by the authors, which is shown to be very rapid and can be recharged within 5 min to one-third of its rated capacity.
270 citations
Patent•
15 Apr 2002
TL;DR: In this article, the use history information concerning the rechargeable batteries is stored in EEPROM 52 of battery pack 40, where the batteries can be discharged to different voltage levels before the operator is warned that the rechargable batteries should be recharged.
Abstract: When rechargeable batteries have been discharged to a selected voltage reference level, LED 29 (and/or buzzer BZ) and controller 32 may warn the operator that the rechargable batteries should be recharged. Controller 32 may change the selected reference voltage level based upon use history information concerning the rechargeable batteries. The use history information may, e.g., be stored in EEPROM 52 of battery pack 40 . Thus, the rechargeable batteries can be discharged to different voltage levels before the operator is warned that the rechargeable batteries should be recharged. In addition or in the alternative, switch 36 may be disposed between the rechargeable batteries and a motor (M). Controller 32 may open switch 36 when the detected voltage of the rechargeable batteries drop below the selected reference voltage level (or a derivative of the selected reference voltage level) in order to interrupt the flow of current to the motor (M). Thus, the rechargeable batteries can be prevented from being over-discharged and from developing memory effects, thereby prolonging the usable life of the rechargeable batteries.
81 citations
Patent•
14 Jan 1994
TL;DR: In this article, a battery monitor and battery capacity indicator that uses a sense cell in addition to the main battery to determine main battery remaining capacity and depletion condition is presented, where the sense cell is a battery which is identical and of the same manufacturing lot as the battery cell or cells in the main batteries.
Abstract: This invention is a battery monitor and battery capacity indicator that uses a sense cell in addition to the main battery to determine main battery remaining capacity and depletion condition. A parameter of the sense cell is related to the main battery capacity so that the main battery will have a minimum capacity remaining when the sense cell parameter reaches a particular value or crosses a particular threshold. In a preferred embodiment, the sense cell is a battery which is identical and of the same manufacturing lot as the battery cell or cells in the main battery pack. A current is drawn from the sense cell that is larger than the current being drawn from the main battery. When the sense cell is fully depleted, the main battery will have a remaining capacity whose magnitude depends on the relationship between the main battery current and the sense cell current.
63 citations
Patent•
19 Dec 1994
TL;DR: A battery-powered vehicle has two batteries which are replaced, rather than recharged in the vehicle as mentioned in this paper, and that battery is used until substantially all of the energy in the battery is exhausted.
Abstract: A battery-powered vehicle has two batteries which are replaced, rather than recharged in the vehicle. The vehicle is powered by only one battery at a time and that battery is used until substantially all of the energy in the battery is exhausted. A discharged battery is replaced while the vehicle operates with the other, non-discharged battery. Preferred batteries have high energy density and may be of a type that is not rechargeable. An example is an aluminum-air battery. The non-rechargeable, discharged batteries can be remanufactured to produce new batteries for further use in the vehicle.
50 citations
Patent•
IBM1
TL;DR: In this article, a field effect transistor was coupled to conduct current from a rechargeable battery to a load so long as the voltage potential across the battery is sufficient to turn on the field-effect transistor to prevent the battery discharging below a predetermined value.
Abstract: Field-effect transistor coupled to conduct current from a rechargeable battery to a load so long as the voltage potential across the rechargeable battery is sufficient to turn on the field-effect transistor to prevent the rechargeable battery discharging below a predetermined value, thereby protecting the rechargeable battery from permanent damage from overdischarge
49 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2016 | 1 |
| 2015 | 2 |
| 2013 | 3 |
| 2012 | 1 |
| 2011 | 4 |
| 2010 | 2 |