Chemistry: electrical current producing apparatus – product – and – With control means responsive to battery condition sensing... – Temperature control
Patent
1998-05-21
2000-11-14
Nuzzolillo, Maria
Chemistry: electrical current producing apparatus, product, and
With control means responsive to battery condition sensing...
Temperature control
429 61, 429120, 42923195, 429149, H01M 1050, H01M 642
Patent
active
061467839
ABSTRACT:
A multi-cell storage battery, in particular to a lithium storage battery, which contains a temperature control device and in which groups of one or more individual cells arranged alongside one another are separated from one another by a thermally insulating solid layer whose coefficient of thermal conductivity lies between 0.01 and 0.2 W/(m*K), the thermal resistance of the solid layer being greater by at least a factor .lambda. than the thermal resistance of the individual cell. The individual cell is connected, at least in a region free of insulating material, to a heat exchanger, the thermal resistance of the heat exchanger in the direction toward the neighboring cell being selected to be greater by at least a factor .lambda. than the thermal resistance of the individual cell and, in addition, the thermal resistance of the heat exchanger toward the temperature control medium being selected to be smaller by at least a factor of about 10 than the thermal resistance of the individual cell, and .lambda. being the ratio of the energy content of the individual cell to the amount of energy that is needed to trigger a thermally induced cell failure at a defined upper operating temperature limit.
REFERENCES:
patent: 5158841 (1992-10-01), Mennicke et al.
patent: 5501916 (1996-03-01), Teramoto et al.
Bottcher Friedhelm
Brohm Thomas
Martin Angela J.
Nuzzolillo Maria
Varta Batterie Aktiengesellschaft
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