Junction box and motor

Abstract

The invention discloses a junction box and a motor comprising the same. The junction box comprises a heater and an exhaust hole, wherein the heater is positioned at the bottom in the junction box and is used for heating the bottom of the junction box; and the exhaust hole penetrates through the junction box and is used for exhausting gas in the junction box. The heater is arranged at the bottom in the junction box, and the heater is used for heating the bottom of the junction box, so that condensed and accumulated water drops in the junction box are quickly heated and evaporated, a high-temperature and high-pressure state relative to the interior of the motor shell is formed in the junction box, gas containing evaporated water vapor flows into a motor shell from the junction box, evaporation water vapor in the junction box is diluted by utilizing a larger-size space in the motor shell, the air humidity in the whole motor is reduced, and the risk of insulation failure of the motor is reduced.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment, in particular to a junction box and a motor provided with the junction box. Background technique [0002] With the rapid development of new energy vehicles, the safety performance of new energy vehicles has attracted more and more attention. Among them, the protection capabilities of the three-electric system in new energy vehicles, such as waterproof and dustproof capabilities, directly affect the safety of the vehicle. [0003] Among them, in spring and autumn or in high-humidity environments, there is a risk of motor failure due to condensation. Condensation generally has an accumulation process. When the condensation accumulates to a certain extent, the insulation performance of the vehicle will decrease, and in severe cases, it will cause a breakdown. Specifically, the occurrence of condensation has a lot to do with the load, temperature and humidity of the vehicle during use,...

AI Technical Summary

Problems solved by technology

[0003] Among them, in spring and autumn or in high-humidity environments, there is a risk of motor failure due to condensation.

Condensation generally has an accumulation process. When the condensation accumulates to a certain extent, the insulation performance of the vehicle will decline, and serious failures will result in shutdown.

[0004] At present, in view of the condensation problem of the motor, the problem of condensation in the motor is mainly solved by optimizing the shaft seal and adopting a sealed isolation design between the junction box and the motor casing. Although these measures can reduce the The amount of water vapor in the shell can be reduced to alleviate the accumulation of condensation in the motor and achieve a certain improvement effect. However, in practical applications, the problem of motor failure caused by condensation still exists, and the risk of insulation failure cannot be completely eradicated.

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