News from: Exide Technologies Network Power
Edited by: Electronicstalk Editorial Team on 1 January 2001
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CMP batteries Standby Division has introduced the new Pulses Plus lithium battery range.
The technical requirements for lithium batteries used as the main power source in applications with long operating lives have changed drastically.
The electrical current profile typically consists of a low continuous current of some micro Amperes coupled with high pulses in the range of hundreds of milliamps and up to several amperes for several milliseconds or even seconds.
The lithium thionyl chloride technology in bobbin-type construction is the most suitable solution for low-current applications, due to its high energy density, very low self-discharge rate and proven shelf and operating life of more than 10 years.
However, for reasons of construction, the currents that can be drawn from the battery are limited resulting in a reduced capability to deliver the full capacity under high current loads.
Spirally wound lithium cells, on the other hand, are able to deliver higher currents.
However, due to their construction they are less safe.
They have significantly less capacity, they have a much higher self-discharge rate and thus are not suitable for long-term applications.
The new Pulses Plus battery technology closes this gap.
It combines the power capability of spirally wound lithium cells with the high energy density, the low self-discharge rate and the high safety level of bobbin-type lithium thionyl chloride cells.
The Pulses Plus technology consists of a combination of a bobbin type lithium thionyl chloride cell with a novel hermetically sealed rechargeable element, the hybrid layer capacitor.
This new battery technology can be used to deliver efficiently current pulses up to several amperes with a minimum voltage of more than 3V.
Moreover, this basic battery can be connected in series and in parallel to battery packs for higher voltages, higher current pulses and higher capacities.
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