Vehicle-mounted USB intelligent charging device

A technology of intelligent charging and vehicle power supply, applied in circuit devices, battery circuit devices, current collectors, etc., can solve problems such as inconvenience of use, and achieve the effect of solving the problem of fast charging

Inactive Publication Date: 2015-03-25
JIANGSU TIANAN SMART SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Great inconvenience to users

Method used

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  • Vehicle-mounted USB intelligent charging device

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Embodiment Construction

[0020] The present invention will be described in further detail below according to the drawings and embodiments.

[0021] Such as figure 1 As shown, a vehicle-mounted USB smart charging device described in the embodiment of the present invention includes:

[0022] A vehicle-mounted power supply terminal, the vehicle-mounted power supply terminal outputs a 5V DC voltage;

[0023] USB interface;

[0024] 500 mA current-limiting output circuit, one end of the 500 mA current-limiting output circuit is connected to the vehicle power supply terminal, and the other end can be connected to the USB interface;

[0025] 1000 mA current-limiting output circuit, one end of the 500 mA current-limiting output circuit is connected to the vehicle power supply terminal, and the other end can be connected to the USB interface on and off.

[0026] The vehicle-mounted USB smart charging device described in the above embodiment realizes two current outputs by setting a 500 mA current-limiting o...

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Abstract

A vehicle-mounted USB intelligent charging device comprises a vehicle-mounted power supply end, a USB interface, a 500mA current-limiting output circuit and a 1000mA current-limiting output circuit, wherein the vehicle-mounted power supply end outputs 5V direct-current voltage, one end of the 500mA current-limiting output circuit is connected with the vehicle-mounted power supply end, and the other end of the 500mA current-limiting output circuit is communicated with the USB interface in an on-off mode. According to the vehicle-mounted USB intelligent charging device, two kinds of current output are achieved by means of arrangement of the 500mA current-limiting output circuit and the 1000mA current-limiting output circuit, the power supply requirement for quick charging of large current and the power supply requirement of mobile terminals of small current are met at the same time, and quick charging can be achieved by means of the vehicle-mounted USB interface.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted terminal applications, in particular to a vehicle-mounted USB intelligent charging device capable of simultaneously supplying power to the vehicle-mounted terminal and charging through a USB interface. Background technique [0002] Existing car audio equipment generally has a USB interface, which is used for external USB equipment to play audio and video, and the operation of files can simultaneously charge the equipment. According to the national standard, the power supply of this interface is DC 5V, and the current limit is within 500 mA. When the user needs to charge some mobile devices, such as mobile phones and tablet computers, in the car, since the charging current is relatively small, it takes a long time for the device to be fully charged. It causes great inconvenience to users. Contents of the invention [0003] The purpose of the present invention is to overcome the above-me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 罗洪张弢李煜
Owner JIANGSU TIANAN SMART SCI & TECH
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