Charging protection method and device, mainboard and display

A charging protection and display technology, applied in circuit devices, battery circuit devices, battery overcurrent protection, etc., can solve the problems of poor controllability, rigidity, and unfavorable charging process stability, so as to improve stability and reduce false triggering. Effect

Pending Publication Date: 2021-07-09
K TRONICS (SUZHOU) TECH CO LTD +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The traditional overcurrent protection method is through the hardware protection of PMIC (Power Management IC, power management integrated circuit). This method is relatively rigid and has poor controllability, which is not conducive to ensuring the stability of the charging process.

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  • Charging protection method and device, mainboard and display
  • Charging protection method and device, mainboard and display
  • Charging protection method and device, mainboard and display

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Embodiment Construction

[0039] In addition to the conventional HDMI (High Definition Multimedia Interface, high-definition multimedia interface) and DP (DisplayPort) interfaces, the display can also be equipped with a type-C interface, which can charge mobile terminals such as mobile phones and laptops through the type-C interface . For example, the external charging power of the type-C port in the display can reach 100W. At the same time, Over Current Protection (OCP) has become an important issue for display type-C external charging. The traditional overcurrent protection method is realized by the hardware protection circuit set inside the PMIC (Power Management IC, power management integrated circuit), that is, the PMIC itself sets a current threshold, and when the instantaneous load current reaches the threshold, it will immediately Protection, stop charging.

[0040] However, the inventor found through long-term practical research that, in some charging scenarios, although the load draw is too...

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Abstract

The invention discloses a charging protection method and device, a mainboard and a display. The method comprises the steps of monitoring the output current of a charging interface in a process of charging a load, if the output current exceeds the preset over-current protection threshold value, accumulating the duration of exceeding the over-current protection threshold value, and if the duration time is greater than or equal to the preset delay time, controlling the power management chip to stop charging the load, and if the duration time is less than the preset delay time, keeping normal charging, so that the false triggering of charging overcurrent protection can be reduced for the condition that the instantaneous pumping load of the load is too large.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a charging protection method, device, main board and display. Background technique [0002] With the development of electronic technology, displays are widely used in various industries and various scenarios, and their functions are becoming more and more abundant. With the rise of type-C products, more and more monitors are also equipped with type-C ports, which can be used for external charging. Overcurrent protection is an important issue for external charging of type-C. The traditional overcurrent protection method is through the hardware protection of the PMIC (Power Management IC, power management integrated circuit). This method is relatively rigid and has poor controllability, which is not conducive to ensuring the stability of the charging process. Contents of the invention [0003] In view of the above problems, the present invention is proposed to provide a chargi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/00304
Inventor 魏浩徐慕玲许芳尚远远熊森富
Owner K TRONICS (SUZHOU) TECH CO LTD
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