It has been my great pleasure to read a pre-release version of the book “Battery Power Management for Portable Devices“, by TI scientists Yevgen Barsukov and Jinrong Qian, and to then write a foreword for it.
The book will come out in May 2013, but I’d like to share my thoughts about it today.
In contrast to my own book, “Battery Management Systems for Large Lithium-Ion Battery Packs “, this new book covers the other side of the spectrum: small batteries.
Some background is of order: open a small battery pack (such as for a laptop computer) and it is likely that the ICs on the protector PCB have a part number that starts with “bq“. If so, those ICs are made by Texas Instruments, and chances are that they use inventions and developments by the authors of this book. In other words, learning about small batteries and they management systems from this book is to learn directly from the masters who have, dare I say? the most intimate knowledge of how to make a safe and effective, small Li-ion battery.
And it shows.
The book is full of great information of the whys and hows of Li-ion cells, Small battery Management Systems, “fuel gauge” algorithms, communications with the host, and even how to prevent cheap knock-offs. It is a very practical book, complete with sample circuits (all using TI chips, of course, to the detriment of the competitors) for notebooks, cell phones, smart phones, and laptops.
TI’s patented “Impedance track” algorithm, arguably the best method to evaluate the State Of Charge of a cell or battery, is described in every detail, revealing all its glory.
The version I read was not yet proofread, and reflected the fact that the authors are not native English speaker (nor am I, for that matter). It lacked a few articles, but also had charming terms such as “back-bust” converter, with its vaguely sexual connotation. By the time the book will be printed, I trust it will be cleaned up (hopefully more than my own book, which went to press with too little proofreading and lots of errors).
The book is a great read for the designer of small batteries, engineering students, and technical managers. It is well organized, it flows nicely and yet it explores its subject in great depths. I cannot recommend this book enough.