Portable mobile charging power supply

Abstract

The invention relates to a portable moving charging power which includes a built-in battery and a voltage booster circuit connected in series with the built-in battery; the built-in battery is used for providing a DC circuit and a DC voltage. The invention also includes a power manager connected on the built-in battery in parallel and an alarm indicator connected with the power manager; the DC voltage provided by the built-in battery is outputted under the control of the power manager and through the adjustment of the voltage booster circuit; the power manager can start the alarm indicator when the electricity quantity of the built-in battery is too low or the built-in battery is short or out of electric current; the power manager can charge for an externally connected device when the electricity quantity of the built-in battery is normal. The built-in battery of the invention realizes the short-circuit/overcharge protection on the voltage booster circuit through the arrangement of the power manager, provides output circuit limitation, realizes the intelligent management of the power and provides a higher charging compatibility.

Description

【Technical field】 [0001] The invention relates to a high-capacity lithium-ion battery power supply, in particular to a portable mobile charging power supply capable of realizing intelligent control. 【Background technique】 [0002] At present, the high-capacity lithium-ion battery can be widely used in different rechargeable devices after the voltage adjustment of the booster circuit. [0003] The voltage of a traditional single-cell lithium-ion battery is 3.7 volts, and the power supply voltage of information-type rechargeable devices is higher than that of a single-cell lithium-ion battery, so a booster circuit is required. However, with the continuous improvement of people's demand for intelligence and humanization of electronic equipment and related products used in conjunction with them, only using traditional simple voltage generation circuits on portable charging power sources can no longer meet people's needs for high-end intelligent products. [0004] The traditiona...

AI Technical Summary

Problems solved by technology

But this circuit has two defects: 1. There is no short-circuit protection. When the output short-circuits, the positive pole of the lithium-ion battery goes directly to the negative pole. At this time, the pulse control terminal cannot prevent the short-circuit from happening, and the instantaneous current is very large, up to 4-10A , may burn the internal devices, and if the short circuit lasts too long, it will overheat the battery and may explode the lithium-ion battery

2. There is no current limit, because the circuit has no current feedback, so there is no constant current output limit. However, some mobile phones on the market need to detect the output current of the charger charging it. When the internal circuit of the charger does not set the output current limit When said phone prevents the charger from charging

Images