The Heavier the Laptop Battery is, The Better Your Laptop is?

It’s a stereotype opinion that weight of laptop battery equals to

its property, which is the reason why major of customers are

likely to judge the property of laptop battery

(http://www.hootoo.com/hp-hstnnlb72-battery-108v-

5200mah-6-cells-p-58678.html ) from its power. To be honest,

it’s really an efficient way to test laptop battery when we do

not have any accessible measurement in hand. However, it’s

not the most scientific way to make a judgment.

On the view of customers’ psychology, electronic suppliers

should manage to increase purchasing value of customers, i.e.,

they should contribute customers to buy better quality

products at lower price. Therefore, what electronic suppliers

need to do is to update technology, under the stable condition

of property, to enhance items’ intensity and cut cost by taking

advantage of new materials as well as novel design theory.

Then, how to realize the above theology for laptop batteries?

First of all, as one of the most important content of CCC Test,

EMT electric circuit is the vital screen to reduce

electromagnetic radiation for laptop batteries. Traditionally, in

order to meeting CCC demands, EMI should set up two levels

circuits with common-mode and different-mode circuits to

achieve EMT filter. However, as the improvement of

component property, it’s enough to achieve the requirements

from CCC just by several parts of circuits, especially for laptop

batteries with low power.

Additionally, PFC circuit is also an important part for laptop

battery. Compared with the traditional metal racks, the newest

material is made from ceramic and plastic, which are

characterized by good insulation, light weight and low noise.

As the popularity of SMD (Surface Mount Device) Technology,

some capacitors, resistors and diodes are smaller than eve,

which are integrated in the back of PCB board. That’s the

reason why it looks cleaner a lot in interior structure of laptop

battery. At the same time, cleaner interior structure is more

beneficial for shaping ventilation to dissipate heat.

Another important technology shouldn’t be ignored is the

development of chip integration. For example, in the past

design of HP hstnn-lb72 battery (http://www.hootoo.com/hp-

hstnnlb72-battery-108v-5200mah-6-cells-p-58678.html ), it’s a

common design to plus PWM with comparator, while those two

chips are integrated to one unit. What’s more, the peripheral

accessories are decreased to some extent.

Meanwhile, the advancement in power devices and the

acceleration in circuit design are good for enhancing power

efficiency from 65% to 80%， which really can reduce the heat

of laptop batteries. That’s the reason why thick heat sinks is

thinner much more than ever.

All in all, coexisting with ever-changing, some components are

still unchanged, such as large capacitor, transformer, switch,

and rectifier. Because of the development of technology and

science, the age of judging items’ quality from its weight has

been pasted.