Capacitance charge device with adjustable clamping voltage

Abstract

A capacitance charge device with adjustable clamping voltage is disclosed in the invention, which includes a high-farad capacitance and a power supply device for charging to the high-farad capacitance. In addition, a switch device is connected between the power supply device and the capacitance, and through the on / off operations of the switch device, the on / off conductions between the power supply device and the capacitance can be controlled. Besides, a clamping circuit is connected between the switch device and the capacitance and also connected to the output terminal of the power supply device. In addition, the clamping circuit has a clamping voltage, which can be compared with the actual voltage so as to control the on / off operations of the switch device and in turn control the on / off conductions between the power supply device and the capacitance. In addition, the invention can constrain the battery voltage in the clamping voltage of the clamping circuit. By doing so, the system can be ensured not to be down because of a sudden tremendous voltage drop of the battery, and the clamping voltage is adjustable according to the variations in product design.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The invention relates to a capacitance charge device that is applied to a power system of a portable electronic product and, more particularly, to a capacitance charge device with adjustable clamping voltage capable of clamping the battery voltage so that the voltage will not have a tremendous drop instantaneously when the battery is charging the high-farad capacitance. [0003] 2. Description of the Related Art [0004] With development of the information industry, many portable electronic products, such as a mobile phone, notebook computer, personal digital assistance (PDA), and digital camera, have been applied in daily life for different purposes such as video / audio multimedia communications and information network transmissions. [0005] On the other hand, low working voltage has been a developing trend pursued by electronic products. Usually, a battery 10, as shown in FIG. 1, will be connected in series to a high-ca...

AI Technical Summary

Benefits of technology

"The invention is a capacitance charge device with adjustable clamping voltage. The device can control the charging of a high-farad capacitance battery to prevent sudden voltage drops that can damage the system or cause the battery to malfunction. The device can also adjust the clamping voltage based on variations in product design or prolong the lifespan of the battery. It includes a high-farad capacitance, a power supply device, a switch device, and a clamping circuit with adjustable clamping voltage. The clamping circuit controls the on / off operations of the switch device and the conductions between the power supply device and the capacitance. Overall, the invention provides a reliable and flexible solution for charging high-farad capacitance batteries."

Problems solved by technology

In turn, the dropping of the voltage will affect not only the lifespan of the battery, but also the normal running of the system, and if the system is down, the electronic product will fail to function normally.

Nevertheless, the lifespan of the battery 10 will still be affected by the natural consumption of the resistor 14.

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