Electronic product charging system

A technology for charging systems and electronic products, applied to battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as long charging time and abnormalities, and achieve the effect of improving charging efficiency

Active Publication Date: 2014-09-24
QINGDAO GOERTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing electronic products do not have the function of switching the charging current according to the working status. Generally, a fixed charging current is directly set for the charging process, and one of the charging currents is to firstly meet the current demand of the product’s functional circuit, then it will be given to the battery The charging current will be reduced, resulting in too long charging time; the other is to give priority to satisfying the charging current of the rechargeable battery, then the current to the functional circuit of the product will be reduced, which may cause some high-current working states (such as maximum audio playing multimedia files, playing games, etc.) abnormal

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0032] Please refer to figure 2 This embodiment provides a charging system for an electronic product, which is used to charge the built-in power supply of the electronic product. The built-in power supply is generally a rechargeable lithium battery 12. The charging system includes a USB interface 101 and a power supply connected to the USB interface 101. The management circuit 11, the power management circuit 11 can obtain external power through the USB interface 101 to charge the battery 12, and the USB interface 101 of the charging system is also connected to the functional circuit 13 of the electronic product (the functional circuit 13 is Refers to the general term for power-consuming circuits in electronic products, which realize the functions of electronic products by consuming the built-in power supply, such as control chip MCU, touch circuit, display circuit, audio circuit, alarm circuit, wireless communication circuit, etc.), so The charging system also includes an oper...

Embodiment 2

[0043] In fact, since the charging system of the first embodiment is mainly suitable for charging electronic products with a USB cable connected to the USB interface of an electronic product (for example, a laptop computer charges a mobile phone through a USB cable), the 500mA charging current exists in this charging method There are some hidden dangers, so many existing electronic products are equipped with power adapter dock charging function. Among them, the charging interface of the dock charger in the prior art has both a USB interface and a DC pin interface, or a charging interface can receive USB The data cable transmits power (that is, charges according to the USB charging specification, such as charging a mobile phone through a laptop) and receives DC adapter charging (the DC pin interface and the USB interface are integrated as one type). In order to describe this solution more clearly, this article As long as the electronic device can perform DC charging (charging in ...

Embodiment 3

[0064] Please refer to Figure 13 The difference between the charging system of this embodiment and Embodiment 1 and Embodiment 2 is that the functional circuit of this embodiment does not have its own MCU or trigger, so the output terminal of the working current detection circuit 14 is directly connected to the charging current adjustment circuit 15 , To control the charging current adjustment circuit to adjust the charging current. It can also intelligently adjust the charging current when the user is charging while using it, so that the electronic product is charged with a smaller current when the electronic product is in a high current working state, and in a low current working state When charging with high current, it can fully improve the charging efficiency.

[0065] The charging system of this embodiment can also refer to the second embodiment for extended functions to be compatible with DC charging and DC charging. The specific circuit of each part can refer to the spec...

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Abstract

The invention provides an electronic product charging system. A working current detection circuit for monitoring the working current of the system and a charging current adjustment circuit for adjusting the charging current according to the detected working current are added on the basis of an existing circuit, so that the magnitude of the charging current can be adjusted intelligently when the electronic product is used by a user during the charging process so as to realize the condition that the battery is charged with a small current when the electronic product is in the large-current working condition and the battery is charged fast with a large current when the electronic product is in the small-current working condition, so the charging efficiency can be improved fully.

Description

Technical field [0001] The invention relates to the technical field of charging devices, and in particular to a charging system for electronic products. Background technique [0002] With the upgrading of electronic products, the functions are also extremely rich, such as high-definition display, WIFI, 3G and other functions are also more and more designed into the product, more functions bring convenience to users, while The demand for current will also be large. Now many smart electronic products, such as mobile phones, tablets, wireless headphones, cameras, smart watches, smart buttons, electronic pedometers, smart glasses, etc., need to be charged every day to meet the needs of users. . [0003] Please refer to figure 1 For electronic products with USB interface 10, due to the limitation of the USB protocol, when USB is used for power supply, the maximum output current I is 500mA. When using the USB interface for charging, when most of the functional circuits 13 of the electr...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCY02B40/00
Inventor 徐照明
Owner QINGDAO GOERTEK
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