Technologies

The evolution of battery technologies has been changing people's life styles.

In general, we classify batteries by types, capacity ranges, applications etc. Our technologies serve the following applications:

1) Backup batteries for mission critical systems;

2) High power batteries for electric vehicles, locomotives and marine applications.

3) Start-up batteries for emergency power generators.

Almost all of todays portable devices come with batteries. ( cell phones, i-pods, laptops, video cameras etc.) Most of them have fuel gauges which indicate the remaining energy in the battery and often not very accurate. When you charge the battery, the fuel gauge goes up until full. As the discharge goes on, the remaining hour or percentage is estimated by taking count of capacity, current and voltage etc. (THIS IS NOT THE MARKET WHICH OUR BATTERYDAQ PRODUCT SERVES.)

Regarding backup batteries, they are usually at a fully charged state. In the event of a power loss, the batteries supply the energy to support the continuous running of critical systems. But just like an exhausted battery pack in a llaptop,whicht still shows 100% full at charge condition, it may last for very short time after the power cord is unplugged. The whole set of functional looking batteries may disappoint you when you need them. One sick battery will lead to the failure of the whole battery system. These types of unexpected failures are often expensive. (Click to see some extreme examples.)

Monitoring a battery's state-of-health will help to weed out the bad apple at an early stage.

We have invented and improved the core technology - online internal resistance measurement. Combined with many other proprietary technologies and expertise, our products provide comprehensive battery monitoring and management.

The main measurement parameters are:

• Online IR (internal resistance or ohmic value*) measurement for each cell/battery
• Connection resistance measurement
• Cell/battery and string voltage
• Charge/discharge current
• Ambient temperature
• Cell/Unit temperatures

Based on the above measurements, the state-of-health is estimated reliably by data trending.

Our IR online measurement technology provides unsurpassable resolution and accuracy more than any other online technologies in the market. No need for discharge.

* Ref to IEEE Std 1491-2005

IEEE Guide for Selection and Use of Battery Monitoring Equipment in Stationary Application

Volume, Issue, 2005 Page(s):0_1 - 33
Digital Object Identifier: 10.1109/IEEESTD.2005.97891
Summary: Monitoring and measurement of battery parameters is an important element of maintaining a fully operational battery system. This guide presents and discusses measurable parameters of batteries used in stationary battery systems and the utilization of such observations. This guide does not give a listing of commercially available systems, but it does provide a means of establishing specifications for the desired parameters monitored

3. Definitions

3.3 internal ohmic value: Any value of resistance, conductance, or impedance derived from the relationships between changes in voltages and currents in a stationary battery under various conditions and used as an indicator of a battery's state of health.