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Panasonic Introduces 12-Volt Stop-Start Battery System
Panasonic Corp. has developed an under-hood energy recovery system that handles a vehicle's entire electrical needs, including air conditioning, when the engine is switched off temporarily by an automatic stop-start device.
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Panasonic Corp. has developed an under-hood energy recovery system that handles a vehicle's entire electrical needs, including air conditioning, when the engine is switched off temporarily by an automatic stop-start device.
The company says its technology can approximately double the fuel economy benefit of existing stop-start systems.
The 12-volt system uses a proprietary Ni-MH battery that stores energy recovered during braking. Panasonic says its cell design significantly improves the maximum charge/discharge temperature to 75 C from 60 C. The higher heat tolerance means the battery can be mounted within the engine compartment, thus simplifying the wiring requirement and giving carmakers more design flexibility.
The design also eliminates the need for a transformer and extends the service life of the vehicle's conventional lead-acid battery, according to the company.
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