Micro-controllers and touch leadership program Atmel Corporation (Atmel Corporation) announced that its management circuitry of battery, including ATA6870 is the first sensor in the industry with a capacitor or active cell balancing options for the number of High lithium ion support the supply voltage using hundreds of volts, for example, electric or hybrid vehicles, electronic bicycles, or no interference with the power supply. RN873，GW240，Inspiron 1525 battery
Active cell balancing the advantages is that it avoids the appearance of passive balanced approach to energy losses. Charging capacitors with the shuffle, or a battery of sensors to another, almost no losses, thus providing greater efficiency and battery life. In the passive method, a large battery slot of the battery through the resistance to over-charging the battery discharge and balance.
In a typical battery pack, battery-free and the other is the same. Battery charging case, rate of self-discharge, the impedance of the battery and energy, and that aging is different. After several charge discharge cycles, which can increase the voltage difference between individual cells. This effect will affect the battery, some cells may not be the appropriate pricing, causing a low battery may be excessive or inadequate. This will shorten the overall life of the battery. Balancing is always active to ensure that all batteries have the same mode of perception of a perfect location.
Atmel's high voltage automotive marketing director for companies Claus Mochel said: "The efficiency of the battery life of batteries for industrial and automotive applications, PC764，Latitude D620 battery , an important element, Atmel ATA687 for the provision of technology with an outstanding balance Program active battery management to address these problems.
On Atmel's ATA6870
Atmel ATA6870-line monitoring to six batteries, you can stack up to 16 times. Between the stacked chips to achieve the most reliable communications, the IC including those based on current source converter level. In addition, ATA6870, 8-BIT check and check, helping to strengthen the capacity of data communications.
ATA6870 for each battery to provide an AD converter dedicated to the monitor. At the same time, this will allow the device to measure the voltage of the battery string of all batteries to make a concrete decision by the lithium-ion battery charging status.
With the same IC, the power of integrated microcontroller can be stacked. Sony VGP-BPS8, Sony VGP-BPS8A , Therefore, the supply current necessary to micro-controller can be taken from the battery power to start the battery in the battery string. Therefore, the micro-controller current consumption is not likely to cause an imbalance in the battery, so that designers without the use of expensive equipment, high voltage. The ability to balance the board can be used in a variety of assessment skills such as balancing with passive resistance, or capacitors or sensors, active equilibrium.
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