Large-current fast charging system with temperature control function and charging method of large-current fast charging system

Abstract

The invention relates to a large-current fast charging system with a temperature control function and a charging method of the large-current fast charging system. The system includes a complete machine and a charger; and the motherboard of the complete machine is provided with a temperature sensitive element, a processor unit and a charging component, wherein the temperature sensitive element is connected with the charging component through the processor unit. According to the method, seven steps are adopted in combination with the above charging system. According to the large-current fast charging system and the method provided by the above technical schemes of the invention, the motherboard is provided with the temperature sensitive element, the heat emission situations of a switching IC and a peripheral inductor can be detected, when temperature achieves a certain threshold value, current reduction is carried out, and the highest temperature on the surface of the complete machine can be controlled in a reasonable range.

Description

technical field [0001] The invention relates to the field of electronic products, in particular to a high-current fast charging system with a temperature control function and a charging method thereof. Background technique [0002] With the rapid development of electronic products, people have higher and higher requirements for charging electronic products. In order to meet people's requirements for charging speed, today's electronic products often use a high-current fast charging method. However, as the current increases, the efficiency of adding a switching charging IC is certain, so according to the power consumption of the charging IC Will be proportional to the square of the current, resulting in doubling the current, quadruple the power loss. [0003] If the charging current is increased from 2A to 4A, under the same charging efficiency, the power loss will increase by 4 times, and this part of the power loss will be converted into heat energy, resulting in an increas...

AI Technical Summary

Problems solved by technology

In order to meet people's requirements for charging speed, today's electronic products often use a high-current fast charging method. However, as the current increases, the efficiency of adding a switching charging IC is certain, so according to the power consumption of the charging IC Will be proportional to the square of the current, resulting in doubling the current, quadruple the power loss

[0003] If the charging current is increased from 2A to 4A, under the same charging efficiency, the power loss will increase by 4 times, and this part of the power loss will be converted into heat energy, resulting in an increase in the surface temperature of the whole machine

As a result, the temperature of the whole machine during high-current fast charging is too high, which may cause problems such as burns to users, and too high a temperature also has a great potential safety hazard for the battery

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