Double-sided water-cooled IGBT radiator and radiating mounting structure thereof

Abstract

The invention discloses a double-sided water-cooled IGBT radiator which comprises a first heat dissipation plate set provided with a water inlet pipe and a water outlet pipe, and a second heat dissipation plate set which can guide cooling water from one side of the water inlet pipe of the first heat dissipation plate set to one side of the water outlet pipe of the first heat dissipation plate set,and the first heat dissipation plate set is provided with a positioning structure used for installing an IGBT. Through the water inlet and the water outlet provided with the sealing rings designed oneach radiator set, the expansion and communication can be easily achieved by increasing the number of the middle transition plate sets, the expansion of an IGBT parallel connection number is achieved, and the power density is improved. The whole power module is compact in structure and reasonable in layout, the design requirement of a high-power-density motor controller is well met, the power system requirement of the new energy electric vehicle is met, the structure is compact, the power density is high, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of motor controller equipment, in particular to a double-sided water-cooled IGBT radiator and a heat dissipation installation structure thereof. Background technique [0002] In the development of electric vehicles, in order to further increase the power density of the motor controller, the current scheme design is based on the double-sided water-cooled IGBT. The double-sided water-cooled IGBT module has a half-bridge structure, and three power modules form a group to form a three-phase inverter module. If power expansion is required, IGBT power modules can be connected in parallel, and multiple groups of modules can be added inside the motor controller. The heat dissipation of IGBT directly affects the power line and economy of the motor system, and its function is to ensure the normal and reliable operation of the electric drive system under the most suitable temperature state. Therefore, the heat dissip...

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Problems solved by technology

Therefore, the heat dissipation system has become an important part of the controller. However, due to the use of double-sided water-cooled IGBT modules, many manufacturers do not have a reasonable heat dissipation solution. The reason is that the IGBT of traditional power modules can only dissipate heat through one side of the substrate. There are copper substrates on both sides of the IGBT of the module, and the distance between the substrate and the IGBT chip inside the module is short and the thermal resistance is small, so it can obtain high power density. A large amount of heat is quickly taken away, and considering that the radiator must meet the requirements of parallel expansion of power modules, the radiator must also have the characteristics of modularization. are excellent

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