Battery requirements for urban electric vans
The Department of Energy (DOE) has carried out an intensive study of battery requirements for electric vans, and developed a mission-directed goals package for each of the principal battery contenders for this application. These goals were based on the assumption that vehicle range and acceleration must be fully met throughout each battery discharge. Under this assumption, the design point is the end-of-life condition, defined as the last cycle in which both power and energy requirements can be fulfilled. A light-weight, low-rolling-resistance van with an improved version of the ac powertrain being developed by Eaton was chosen as the hypothetical baseline vehicle. A modified FUDS cycle was selected along with assumptions of 3 M/sup 2/ frontal area, 0.37 drag coefficient, and a rolling resistance of 0.008. State-of-art characteristics and design interrelationships were developed for each battery technology, and the degree of advance expected by 1995 was projected. For each battery candidate, a least-cost combination of performance and operating characteristics was determined. The analysis included the peak power vs specific energy and depth-of-discharge (DOD), cycle life vs DOD, cost vs onboard energy and power, and kWh size effects. The resultant R and D goals for the electric van battery are presented, including early-in-life and end-of-life energy over the drive cycle, peak power, battery weight and volume, battery life, costs, and allowable frequency of repair.
- Research Organization:
- USDOE, Washington, DC; Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 7242743
- Report Number(s):
- CONF-860810-33; ON: DE87001523
- Resource Relation:
- Conference: Intersociety energy conversion engineering conference, San Diego, CA, USA, 25 Aug 1986; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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