No one is making a commercially available electric truck that goes faster than 50 mph. BEV has addressed all of these issues in our first prototype 11,500 lbs GVWR vehicle. Vehicle Weight BEV has filed patents on the ultra-lightweight composite aluminum frame which we think will be a key component in the automotive industry for making vehicles lighter while retaining strength. Aluminum honeycomb composite is well known in the aerospace industry but has never been used in the automotive industry until now.Our primary invention is the placement of key stringers of tubing inside the honeycomb core in order to stiffen and spread out the load inside the vehicle frame and where it attaches to key suspension points. There are three primary advantages in our frame design over the typical steel frame rail truck design.
First is lightness of the vehicle. Batteries for electric vehicles have such a high cost, that a gain in the efficiency of the vehicle pays for itself through a smaller battery pack and less initial costs. On smaller vehicles such as the Nissan Leaf or the GM Volt the batteries might be 20-30% of the price of the vehicle. On larger trucks the battery pack can be fully 50% or more of the costs of materials in the manufacturing of the vehicle.
By bringing the battery pack to the center of the vehicle it protects the battery pack from accidents, thus protecting the investment in the high cost battery packs and increasing the Factor of Safety. This also places the weight of the battery pack 1,400 lbs. Or over in the center of the vehicle, increasing the stability and drivability of the vehicle.
Third is the reduced energy needed to manufacture the frame itself. Costs and energy and ease to manufacture the frame is all better than a typical steel frame rail truck. The process is vacuum bagging 6 parts instead of plasma cutting, welding and bolting 30 parts or more. Thus costs and energy to manufacture is dramatically decreased.
Battery Thermal Management System This is different from the usual battery management system (BMS) in that the usual BMS is involved in managing the battery cells during charge and discharge in order to keep track of any over or under voltage conditions outside of normal parameters. Our battery thermal management system (BTMS) allows us to use the same heating and cooling system that we use on the cab of the truck and heat and cool the battery pack. We have spent the last 18 months in Colorado testing the system in the summer and winter. At 40 F the range of the battery pack is already being reduced without heating the pack. In minus 20 F conditions the range is reduced by 80% without heating the pack.Although it is a much more difficult parameter for a customer to quickly quantify, cooling the pack in the heat of the summer is equally important by keeping cycle life in line with manufacturers spec. Over 102 F the pack is being baked.
The cycle life can be reduced by up to 80% just by a few weeks of operations at this higher temperature. The problem is compounded by the necessary placement of the battery pack about 1 foot above the black pavement. Therefore we cool the battery pack. No one else has implemented this in electric trucks. Highway Capable Electric Trucks BEVs top speed is 71 mph.
We are the only electric truck OEM that offers this speed. From a department of transportation legal perspective any vehicle that gets on an interstate highway must be capable of going at least 10 mph less than the posted speed limit. Since many states have speed limits of 75mph this dictates a 65mph speed.
For large format electric vehicles this means either a motor/controller with a greater amount of torque and power, or a transmission. This is not hard to do, but the market dictates that this must be done. The only reason we can speculate as to why neither Smith nor Navistar has done this is that both of their designs were finalized in England where this is not a market driven necessity. We have also observed through our own extensive testing of our prototype truck that higher speeds will decrease range and therefore make the trucks either more expensive to produce or lower in range. The item "2013 Boulder Electric DV-500 Delivery Vehicle" is in sale since Sunday, March 24, 2019.
This item is in the category "eBay Motors\Cars & Trucks\Other Makes". The seller is "ikat2013" and is located in Ogden, Utah. This item can be shipped worldwide.