Automotive Batteries at Low Temperatures PDF Download
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Author: Deborah Diemand
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 26
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Book Description
Author: Start-Stop Battery Committee
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This SAE recommended practice applies to 12 V lead-acid storage batteries that are designed specifically for start-stop operations in on-road passenger vehicles or light trucks. Included are definitions of terms, general testing requirements, key performance characteristics, and life testing. Properties not unique to start-stop batteries should be tested according to SAE J537 or other applicable testing protocols. Increased demands for fuel efficiency and lower environmental impact have fostered efficiency changes in the ways internal combustion engine (ICE) vehicles operate. In particular, time spent stopped in traffic with the vehicle engine at idle is recognized as a key source of wasted fuel, CO2, and other emissions. Many new vehicles are therefore utilizing a relatively cost-efficient method of improving fuel efficiency by stopping the engine when the vehicle is temporarily halted and restarting it when the vehicle needs to be driven or after a limited discharge time. This has come to be called start-stop operation (often also called stop-start, auto-stop, idling stop, idle stop and go, and micro-hybrid). Start-stop operation offers no alternate vehicle propulsion.Start-stop operation puts increased demands on a vehicle battery. During the many stop periods when there is no output coming from the vehicle charging system, it must exclusively power the various loads in the vehicle electrical system. It must also provide many more cranking starts compared to conventional vehicle operation in which the engine stays in continuous operation during a driving cycle. Once the engine has re-started, the alternator must recharge the battery sufficiently to keep it in continuous operating condition. Because of the extra discharges in urban traffic, start-stop batteries typically operate in a partially discharged conditon that leads to an increased charge acceptance during charging opportunities.Batteries that satisfy the demands for this type of operation need to have enhanced electrical properties compared to typical batteries used in traditional internal combustion vehicles. Key performance features of start-stop batteries are high power to provide instantaneous starting, good charge acceptance to keep the battery in acceptable operating condition, and resistance to cranking and capacity loss in partial discharge shallow cycling. Besides enhanced batteries, vehicles with start-stop operation need more robust starting, charging, and control systems that work to keep the battery and vehicle in proper start-stop operation to achieve the vehicle fuel efficiency/emissions ratings. Start-stop vehicles may also deliver braking regeneration to capture momentum energy and stop the engine in a condition to restart more rapidly. Start-stop vehicles normally have battery monitoring systems (BMS) that work in conjunction with the vehicle computer to ensure reliable starting and safe and non-intrusive start-stop function during vehicle operation.This document of recommended practices therefore focuses on functional definitions and tests of those batteries that reflect the demands for usage in start-stop operation. Batteries with various chemistries or combinations of batteries have been proposed for this type of operation. Up until this time, start-stop vehicle manufacturers almost entirely use lead-acid battery variations (AGM-absorbent glassmat/EFB-enhanced flooded); therefore, testing as outlined in this document has been targeted at these lead-acid characteristics. If there is a battery combination other than a single battery intended to be used in a start-stop vehicle, it should be tested as a single unit rather than separate items with the agreement of the supplier and user.Technology to increase vehicle efficiencies is changing rapidly. It is expected that batteries related to start-stop performance will have changing demands in the near future. It is therefore recommended that this recommended practice document be reviewed on a frequent basis to keep it relevant.
Author: Deborah Diemand
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 26
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Book Description
Author: Harold H. U. Cross
Publisher:
ISBN:
Category : Electric batteries
Languages : en
Pages : 130
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Book Description
Author: Jürgen Garche
Publisher: Elsevier
ISBN: 0444637036
Category : Technology & Engineering
Languages : en
Pages : 708
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Book Description
Lead-Acid Batteries for Future Automobiles provides an overview on the innovations that were recently introduced in automotive lead-acid batteries and other aspects of current research. Innovative concepts are presented, some of which aim to make lead-acid technology a candidate for higher levels of powertrain hybridization, namely 48-volt mild or high-volt full hybrids. Lead-acid batteries continue to dominate the market as storage devices for automotive starting and power supply systems, but are facing competition from alternative storage technologies and being challenged by new application requirements, particularly related to new electric vehicle functions and powertrain electrification. Presents an overview of development trends for future automobiles and the demands that they place on the battery Describes how to adapt LABs for use in micro and mild hybrid EVs via collector construction and materials, via carbon additives, via new cell construction (bipolar), and via LAB hybrids with Li-ion and supercap systems System integration of LABs into vehicle power-supply and hybridization concepts Short description of competitive battery technologies
Author: Bruno Scrosati
Publisher: Woodhead Publishing
ISBN: 1782423982
Category : Technology & Engineering
Languages : en
Pages : 547
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Book Description
Advances in Battery Technologies for Electric Vehicles provides an in-depth look into the research being conducted on the development of more efficient batteries capable of long distance travel. The text contains an introductory section on the market for battery and hybrid electric vehicles, then thoroughly presents the latest on lithium-ion battery technology. Readers will find sections on battery pack design and management, a discussion of the infrastructure required for the creation of a battery powered transport network, and coverage of the issues involved with end-of-life management for these types of batteries. Provides an in-depth look into new research on the development of more efficient, long distance travel batteries Contains an introductory section on the market for battery and hybrid electric vehicles Discusses battery pack design and management and the issues involved with end-of-life management for these types of batteries
Author: Karl Kordesch
Publisher:
ISBN:
Category : Electric batteries
Languages : en
Pages : 540
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Book Description
Author: Charles Letnam Mantell
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 248
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Book Description
Author: David Anthony James Rand
Publisher: John Wiley & Sons
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 604
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Book Description
Provides an information guide to the use of rechargeable batteries in electric vehicle propulsion. The application of battery-driven vehicles in service on-the-site and on-the-road is included in the book.
Author: Robert N. Brady
Publisher:
ISBN:
Category : Transportation
Languages : en
Pages : 834
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Book Description
Author:
Publisher: McGraw-Hill Professional Publishing
ISBN:
Category : Transportation
Languages : en
Pages : 408
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Book Description
