Double-sided cooling structure for vehicle-mounted inverter

Abstract

The invention discloses a double-sided cooling structure for a vehicle-mounted inverter, comprising an inverter shell and a double-sided cooling channel power module. A water channel is formed in theinverter shell. The double-sided cooling channel power module is clamped to the surface of the inverter shell. The other side of the upper end of the inverter shell is connected with a heat conductionplate through bolts, and the heat conduction plate is of a bent structure. The other end of the heat conduction plate is clamped at the upper end of the double-sided cooling channel power module, andthe other end of the heat conduction plate is also connected with the side wall of the inverter shell through bolts. An upper heat conduction interface material is adhered to the upper end face of the double-sided cooling channel power module. Improvement is made on the basis of the original single-sided water cooling structure. The water channel is constructed on the machine shell, a heat dissipation channel does not need to be independently arranged for other heating devices, and the original single-sided water cooling structure is inherited. The technology is mature, and the reliability ishigh. There is only one flow channel cavity, and local pressure loss caused by a communicated structure is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted inverters, in particular to a double-sided cooling structure for vehicle-mounted inverters. Background technique [0002] The car inverter is a kind of DC12V direct current that can be converted into AC220V alternating current, which is the same as the mains, and is used for general electrical appliances. It is a convenient vehicle power converter. Vehicle power inverters are generally welcomed in foreign markets. Due to the high penetration rate of automobiles in foreign countries, the inverter can be used to connect the battery to drive electrical appliances and various tools to work when going out to work or travel. [0003] With the increase of the power density of vehicle-mounted inverters, in order to effectively reduce the junction temperature of power devices and significantly increase the service life of power devices, most of the existing inverters use independent heat dissipati...

AI Technical Summary

Problems solved by technology

The above-mentioned double-sided water-cooling scheme has the following disadvantages: 1. Since the inverter heat dissipation module is separated from the casing, other heat-generating devices (DC-DC, capacitors, etc.) in the casing cannot dissipate heat by transferring heat to the casing. Arrange heat dissipation channels separately; 2. The number of heat dissipation system components increases, the heat dissipation structure is complicated, the size of the heat dissipation system is increased, the installation difficulty is increased, the manufacturing cost is increased, and the risk of system leakage is increased; 3. The connection structure between heat dissipation plates causes local pressure loss, forming an invalid pressure drop

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