PWM fan control-based internal temperature control method of charging pile

Abstract

The invention relates to a PWM fan control-based internal temperature control method of a charging pile. The charging pile comprises a PWM fan. The PWM fan control-based internal temperature control method comprises the steps of respectively acquiring a plurality of pieces of real-time temperature data by a plurality of preset temperature acquisition points in the charging pile to obtain effectivevalues of all acquired real-time temperature data, highest value of the real-time temperature data and minimum value of the real-time temperature data, further obtaining temperature difference of aninternal temperature change condition of the charging pile, and deciding whether PWM output is started or not according to a relation between the temperature difference and a preset starting temperature threshold of the PWM fan; and judging whether a PWM output duty ratio is improved or the PWM output duty ratio is reduced or not according to two preset temperature difference thresholds so as to achieve accurate adjustment of a rotational speed of the PWM fan. By the PWM fan control-based internal temperature control method, self-adaptive adjustment between the rotational speed of the PWM fanand the real-time temperature data of the charging pile is achieved, no influence of the temperature of the PWM fan in the charging pile on normal working of the charging pile is ensured, and the energy consumption and the noise of the fan are effectively reduced.

Description

technical field [0001] The invention relates to the field of charging piles, in particular to a temperature control method in a charging pile based on PWM fan control. Background technique [0002] The charging module of the charging pile will generate a lot of heat during the working process. If it is not discharged in time, it will affect the charging efficiency, accelerate the aging of the original components and shorten the service life. [0003] In order to discharge a large amount of heat generated by the charging module in a timely manner, an ordinary fan is usually installed in the existing charging pile in order to achieve the effect of heat dissipation. During the charging of the charging pile, start the fan to run; after the charging is over, turn off the fan. [0004] However, there are still problems in this heat dissipation solution for the heat in the charging pile: the heat generated by the fan itself and the influence of temperature factors on the fan contr...

AI Technical Summary

Problems solved by technology

[0004] However, there are still problems in this heat dissipation solution for the heat in the charging pile: the heat generated by the fan itself and the influence of temperature factors on the fan control are not considered, and the speed of the ordinary fan in the existing charging pile is not adjustable, which will cause more severe noise pollution

In addition, when the speed of the fan in the charging pile does not match the temperature, it will cause an additional increase in energy consumption of the charging pile, and due to the thermal effect of the fan itself, the fan itself becomes a heat source for the temperature rise in the charging pile.

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