A new type of electronic switch circuit and its control process for mobile power products

Abstract

The invention provides a novel electronic switching circuit of a mobile power supply product internally provided with a lithium battery. The novel electronic switching circuit comprises a power circuit, a booster circuit, an electronic switch, a trigger circuit, a control circuit, a dynamic current sampling circuit and a partial pressure detection output level circuit. When a power plug of portable equipment is connected to a power socket of the novel electronic switching circuit, the circuit can be automatically started to supply power to the equipment to be powered by DC5V, such as an MP3, an MP4, a mobile phone, an iPhone and the like. If a supply current is detected to be less than a set minimum supply current value of a product by a programmable single chip microcomputer MCU in the circuit, a supply circuit of the circuit can be off by the electronic switch in the circuit, or if the power plug of the portable equipment is separated from the power socket of the novel electronic switching circuit, the circuit stops supplying power to an output port, and a micro-power consumption state is automatically switched at the same time. The novel electronic switching circuit provided by the invention can achieve the purpose of low consumption and energy conservation, and is more convenient for a user.

Description

technical field [0001] The electronic switch circuit of the present invention is particularly an electronically powered switch circuit for mobile power products containing built-in lithium batteries. Background technique [0002] At present, with the development of portable electronic products, the need for mobile power as an accessory device for portable devices in daily life applications is becoming more and more important. Power supply or charging for portable devices that need power supply, especially for devices that need to be powered by DC5V, such as MP3, MP4, mobile phones, iPhone and other devices. like figure 2 As shown, a mobile power supply with a built-in lithium battery usually uses a mechanical switch or button to cut off the connection between the lithium battery and the output terminal, so that the power consumption of the device is very small when the device is not in use. However, this method requires manual operation, and the operation is cumbersome. If...

AI Technical Summary

Problems solved by technology

However, this method requires manual operation, and the operation is cumbersome. If the user forgets to turn off the mechanical switch or button after using this type of mobile power supply, the battery in the mobile power supply will run out of energy due to the continuous operation of the internal boost circuit. , so that the mobile power supply that should be able to provide power to the portable device many times must be recharged to provide power to the portable device

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