Multi-cell storage battery

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:873374

Brohm, Thomas ^[1]; Bottcher, Friedhelm ^[2]

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1. Hattersheim, DE
2. Kelkheim, DE

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.

• Research Organization: United States Advanced Battery Consortium, Dearborn, MI (US)
• DOE Contract Number: FC02-91CE50336
• Assignee: Varta Batterie Aktiengesellschaft (Hannover, DE)
• Patent Number(s): US 6146783
• OSTI ID: 873374
• Country of Publication: United States
• Language: English

Related Subjects

multi-cell
storage
battery
particular
lithium
contains
temperature
control
device
individual
cells
arranged
alongside
separated
thermally
insulating
solid
layer
coefficient
thermal
conductivity
lies
01
resistance
factor
lambda
cell
connected
region
free
material
heat
exchanger
direction
neighboring
selected
addition
medium
10
ratio
energy
content
amount
trigger
induced
failure
defined
upper
operating
limit
temperature control
individual cells
thermally induced
control device
insulating material
thermal conductivity
heat exchange
heat exchanger
operating temperature
thermal resistance
storage battery
individual cell
energy content
cells arranged
solid layer
multi-cell storage
insulating solid
neighboring cell
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