Document Detail


The effect of pulsatile power loads on nickel/cadmium battery cells for mechanical circulatory support devices.
MedLine Citation:
PMID:  8186495     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A number of portable medical devices, including the implantable ventricular assist device, demand fluctuating or pulsatile power from their batteries. Therefore, a study was undertaken to determine the effects of these pulsatile discharge loads on the cycle life and operating time of rectangular prismatic nickel/cadmium battery cells. The battery cells were charge/discharge cycled at 37 degrees C using either a pulsatile discharge load of 10.0 or 11.25 W (average) or a nonpulsatile discharge load equivalent to the average of the pulsatile loads. The tests showed that the pulsatile discharged cells gave significantly less operating time throughout their cycle life, by a mean of 3 +/- 3-8 +/- 2 min on each cycle (ie, 8 +/- 8-18 +/- 5%), compared to the cells under equivalent nonpulsatile discharge loads. The tests also showed that the pulsatile discharged cells had significantly shorter cycle lives, by 61-97 cycles (11-17%), than the nonpulsatile discharged cells. The results show that, under the test conditions of this study, pulsatile discharge loads reduce the cycle lives and operating times of rectangular prismatic nickel/cadmium battery cells, compared to cells discharged under nonpulsatile loads of equivalent average power.
Authors:
G K MacLean; P A Aiken; D G Duguay; W A Adams; T Mussivand
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  ASAIO journal (American Society for Artificial Internal Organs : 1992)     Volume:  40     ISSN:  1058-2916     ISO Abbreviation:  ASAIO J.     Publication Date:    1994 Jan-Mar
Date Detail:
Created Date:  1994-06-23     Completed Date:  1994-06-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9204109     Medline TA:  ASAIO J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  67-9     Citation Subset:  IM    
Affiliation:
Cardiovascular Devices Division, University of Ottawa Heart Institute, Ontario, Canada.
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MeSH Terms
Descriptor/Qualifier:
Cadmium*
Electric Power Supplies
Heart-Assist Devices*
Humans
Nickel*
Chemical
Reg. No./Substance:
7440-02-0/Nickel; 7440-43-9/Cadmium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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