STMicroelectronics BMS chips - used w/LG Chem Pack

[MitchJi]

Hi,

The STMicroelectronics BMS Chips might be useful (to someone who knows how to use them). I can't find the chip referred to on their site but an earlier chip is listed. Might be just a short time before the part referred to is listed also. Prices are very reasonable for quantities of 10k ($0.65)
http://evworld.com/news.cfm?newsid=20002

New LG Chem Battery Pack Combination Unveiled

Source: STMicroelectronics
Class: PRESS RELEASE

SYNOPSIS: ST’s battery-management chip is manufactured with the Company’s proprietary BCD (Bipolar-CMOS-DMOS) technology

STMicroelectronics unveiled details of a new automotive battery pack that significantly extends the potential of electric and hybrid electric vehicles (HEVs), reducing both petrol consumption and CO2 emissions. The new battery pack combines LG Chem’s lithium ion (Li-ion) battery technology and with a state-of-the-art battery management chip manufactured by ST...

The new Li-ion battery pack from LG Chem manages the charge/discharge cycle by incorporating an advanced battery-management chip, manufactured by ST, which enables safe and long-term reliability of Li-ion battery technology at affordable cost, even in applications as demanding as automotive powertrain systems.

ST’s battery-management chip is manufactured with the Company’s proprietary BCD (Bipolar-CMOS-DMOS) technology, which combines digital logic circuits, precise analog measurement circuits and power-handling transistors in one silicon chip. A Battery Management System with these chips accurately controls the charging and discharging cycles of the battery to ensure safe operation and long battery life. Each chip can handle up to ten Li-ion cells and also includes an interface for communicating with other ST battery-management chips in a system. With this communication capability, as many as 32 battery-management chips can be connected in cascade to manage batteries that deliver up to 1600V to the electric motors.

BCD, often called smart power, is a semiconductor technology that allows ST to manufacture three fundamental components of electronic circuits on a single low-cost chip:
# Digital logic for high-speed computation.
# Analog circuits for high-precision measurement and control.
# Power transistors that manage the flow of high electric currents.

The LG Chem/ST solution reduces the cost and weight and increases the reliability of the Li-ion battery pack, enabling Li-ion technology to address new applications from electric scooters and bicycles to heavy trucks

This is the only one I can find under products:
http://www.st.com/stonline/stappl/cms/press/news/year2006/p2016.htm

The L6924D is a fully monolithic battery charger designed for single-cell Li-Ion and Li-Polymer battery packs. The ideal solution for space-limited portable products it is produced with ST’s robust BCD6 smart power technology and integrates the Power MOSFET, reverse blocking diode, sense resistor and thermal protection into a compact VFQFPN16 package.

Designers can choose between Linear and Quasi-Pulse charging modes, depending on the application’s requirements. Linear Mode suits applications with low-cost power adapters, such as an external voltage regulated adapter, when the L6924D can charge the battery in a Constant Current/Constant Voltage (CC/CV) profile. Operation in Quasi-Pulse Mode can be used when a current-limited adapter is available, dramatically reducing the power dissipation. Closed loop thermal control protects the device against overheating in either mode.

The L6924D has an operating input voltage range of 2.5V to 12V, making it suitable for use with a wide range of AC adapters. It is also USB compatible, allowing use in popular USB-powered computer peripherals. All the key parameters are programmable, including pre-charge current, pre-charge voltage threshold, fast-charge current, the end-of-charge current threshold and the charging time.

http://www.st.com/stonline/products/literature/ds/11908/l6924d.htm

Battery charger system with integrated power switch for Li-Ion/Li-Polymer

http://www.st.com/stonline/products...ent/battery_management/battery_management.htm

Products to support battery management in a variety of applications, with special focus on battery charge suitable to different battery chemistry, single or multi cell, and battery pack

http://www.st.com/stonline/stappl/p...producttype=product&open=product&applilevel=#

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