Device, system and method for adaptively adjusting charging time by employing charging adapter

Abstract

The invention discloses a device, a system and a method for adaptively adjusting charging time by employing a charging adapter, and relates to the technical field of charging. The battery charging time is automatically adjusted according to charging current of the charging adapter and battery voltage. Compared with the prior art, the device is low in cost and safer and more reliable in charging, and the problem that the battery is not fully charged due to the fact that a user does not utilize a standard charger to charge is solved.

Description

technical field [0001] The present invention relates to the technical field of charging, in particular to a charging adapter self-adaptive adjustment charging time device, system and method. Background technique [0002] The handheld POS terminal is a multi-functional terminal, which can be installed in the special merchants and acceptance outlets of credit cards and connected with the computer to form a network, so that the automatic transfer of electronic funds can be realized. It has the functions of supporting consumption, pre-authorization, balance inquiry and transfer. , It is safe, convenient, fast and reliable to use. However, in order to realize the portability of the handheld POS terminal, the use of a rechargeable battery must be indispensable. At present, most rechargeable batteries on the market are lithium batteries. Lithium batteries have the advantages of small size, high voltage difference between single cells, high energy density, and long service life. U...

AI Technical Summary

Problems solved by technology

However, in order to realize the portability of handheld POS terminals, the use of rechargeable batteries is inevitable.

At present, most rechargeable batteries on the market are lithium batteries. Lithium batteries have the advantages of small size, high voltage difference between single cells, high energy density, and long service life. Under the circumstances, it is easy to cause fire and explosion caused by safety valve rupture, which is very dangerous, so a protection IC (charging chip) must be installed to ensure that the battery will not be overcharged, and software is required to control the protection circuit and coordination

[0003] In the current charging management, there are two commonly used methods, one is to use a professional high-performance charging management chip to automatically adapt to the charging adapter of different currents, due to the use of a professional high-performance charging management chip, no software is required to manage the charging process The charging adapter automatically adapts to different viewpoints and has good performance, but the internal integrated charging current detection module and battery power detection module have high cost and cannot be widely used in low-cost products on the market

The other is to use a common charging management chip to manage the charging by detecting the battery voltage through software. Since the common charging management chip is used, the performance is poor. The pin can be controlled to realize charging on and off. When the battery cannot be fully charged within the normal charging time, it is necessary to use the charging timeout mechanism to stop charging to ensure that the battery does not burst due to overcharging and cause a fire. However, The timeout time of battery charging is related to the charging current. The larger the current, the shorter the timeout time, and the smaller the current, the longer the timeout time. Therefore, when the user uses different charging adapters for charging, the timeout time of the timeout mechanism cannot be determined. If the timeout If the time is set too long, there is a risk of battery explosion. If the timeout is set too short, the battery may not be fully charged and stop charging

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