Power supply module and power control method for personal digital assistant

Abstract

A power supply module of a personal digital assistant consists of a main power supply storage device, a secondary power supply storage device, a solar cell and a charge control circuit, wherein, the main power supply storage device is used to supply required power for the normal operation of the personal digital assistant, the secondary power supply storage device is used to supply required power for a system memory of the personal digital assistant, the charge control circuit is used to detect a power storage status of the main power supply storage device, when the main power supply storage device is in a low power status, and the main power supply storage device is not connected to an external power supply, the charge control circuit controls either the secondary power supply storage device or the solar cell to charge the main power supply storage device.

Description

【Technical field】 [0001] The present invention relates to a power supply module and a power control method of a personal digital assistant, and in particular to a power supply module and a power control method that utilizes solar energy to add another power source. 【Background technique】 [0002] In modern life, various electronic devices are often used to handle various events, such as communication, schedule management, document writing and so on. With the advancement of science and technology, various electronic devices are also developing towards miniaturization for easy portability. Personal Digital Assistant (hereinafter referred to as PDA) is one of the common personal portable tools at present. The original design concept of PDA is mainly to combine the The used all-purpose notepad is digitized (digitalized), and includes multiple functions such as schedule management, memorandum and address book. Common power supply methods used by personal digital assistants, one ...

AI Technical Summary

Problems solved by technology

Common power supply methods used by personal digital assistants, one is to use an external power supply, and the other is to preset a battery inside the PDA. The internal power supply is usually designed as a mercury battery to provide the power required for system memory operation. The lithium battery is responsible for providing power for the operation circuit. However, when both the lithium battery and the mercury battery are in low power, replacing the lithium battery may cause the system to lack power and cause system memory loss, and the PDA will not be able to boot normally.

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