2012 Nissan Leaf Battery Warmer: More Details
Unlike EVS heated liquid, which use the grid to maintain a minimum temperature of the battery and maintain large, heating of the battery will activate the sheet to ensure acceptable performance when temperatures are near 0 degrees Fahrenheit. Already Batteries lose power as the temperature drops, and subfreezing interim, the acceleration is compromised. At about minus 22 degrees Fahrenheit (minus 30 degrees Celsius), electric batteries and some hybrid vehicles simply will not turn on.
"We were not afraid that someone could not merge on the freeway," said Mark Perry, director of product planning for Nissan North America. "We were provided protection against non-start, if someone happens to leave their cars outside below zero, many distance to the airport, not plugged in, not driven."
In this case, the heater battery uses its stored energy to power elements of resistive heating that consume less than 0.3 kilowatts (300 watts). Again, no liquids or fans are involved. For comparison, hair dryers generally use more than 1.5 kW, the battery is charging of the sheet 3.3 kW when connected to a 240-volt charger, and in the dead of winter we saw our Leaf's cabin heater draw as much as 4.5 kW for brief periods. The battery pack is rated at 24 kilowatt-hours, so if it had, say, 16 kWh of charge left, you might think the heater would run it down in 53 hours — but it doesn't work that way.
When the car is driven or plugged in (even after the battery is fully charged), enough heat is generated to keep the battery warm, Perry said. The Leaf's chief engineer, Hidetoshi Kadota, noted that the Leaf would have to be in the harsh conditions for a couple of days before the battery heater would come into play. The new battery insulation helps retain the heat. For the same reason, the battery heater doesn't stay on full-time even once it starts.
Perry said the need for the heater will be extremely rare. "But what do engineers do?" he asked. "They protect against the 1 percent chance."
The cold package isn't an option package; it will be standard on all 2012 Leafs. Unfortunately, the battery heater won't extend the car's range, as the thermal management does in the Chevy Volt. However, the front and rear seat heaters probably will. They allow occupants to use the cabin heat much less.
The 2012 models begin production this summer.
Electric Cooling Fans - News
Most battery-electric cars — current and future — use liquid or forced-air battery heating and/or cooling. We were then surprised to learn that the battery warmer comes into play only at temperatures below minus 10 degrees Celsius (14 degrees
The first was caused when a piece of something broke off and hit a cooling fan. The second was caused by a voltage fluctuation of unknown origin. Tuesday's outage was traced to workers who are working on the new tie-in for the Patrick Street fire
However, when the temperature of the EV-neo battery rises above a set level a cooling fan activates, bringing air into the battery box and helping to moderate the rate of temperature increase. This system helps support repetitive charging and allows
Massachusetts utility company NStar, among others, suggests using a ceiling fan in hot weather, to create a cool breeze and keep air circulating. To get rid of hot air while you're cooking, turn on an exhaust fan; the savings on cooling costs will far
Sales of fans rose 145 percent to 454000 units, and refrigerators rose 19 percent to 370000 units. Aeon Co., the country's second-biggest retailer, aims to raise sales of electric fans by 50 percent. It plans to increase by 20 percent the sales of lace
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