Vehicle-mounted driving module assembly

Abstract

The invention discloses a vehicle-mounted driving module assembly, which sequentially comprises a control board PCBA, a power board PCBA, a power module and a radiator from top to bottom, wherein the power module comprises a mos single tube, a mos single tube heat dissipation aluminum block, a positive heat dissipation aluminum block and a negative heat dissipation aluminum block, heat conduction pads are arranged on the outer side faces of the mos single tube heat dissipation aluminum block, the positive heat dissipation aluminum block and the negative heat dissipation aluminum block, the mos single tube is fixed on the heat conduction pads on the two side faces of the mos single tube heat dissipation aluminum block through fixing pressing strips, and pins at the leading-out end of the mos single tube are covered with heat conduction gel and make full contact with the mos single tube heat dissipation aluminum block. The vehicle-mounted driving module assembly is reasonable in structural design, the mos single tube is independently arranged, the welding difficulty and the production cost of the power board are reduced, and the heat dissipation area can be effectively increased and the heat dissipation efficiency can be improved through the arrangement of the specific mounting structure of the mos single tube.

Description

technical field [0001] The invention belongs to the technical field of motor controllers, and in particular relates to a vehicle-mounted drive module assembly. Background technique [0002] At present, the low-voltage on-board motor controllers on the market are composed of power modules, capacitors, power boards, radiators, control boards, copper bars, etc., and the structural design and adjustment are designed according to customer needs, which requires a large workload and high cost. Moreover, in the prior art, the power module dissipates heat through natural cooling, and the heat dissipation performance is poor, which can easily cause damage to the power module and cause the entire system to fail; in addition, the existing low-voltage vehicle-mounted motor controller power module (mos) patch To the PCB board to dissipate heat through contact with the radiator. This structure makes the PCB board generally made of aluminum substrate or copper substrate. The cost is high, a...

AI Technical Summary

Problems solved by technology

[0002] At present, the low-voltage vehicle-mounted motor controllers on the market are composed of power modules, capacitors, power boards, radiators, control boards, copper bars, etc., and the structural design and adjustment are designed according to customer needs. The workload is relatively large and the cost is also high.

Moreover, in the prior art, the power module dissipates heat through natural cooling, and the heat dissipation performance is poor, which can easily cause damage to the power module and cause the entire system to fail; in addition, the existing low-voltage vehicle-mounted motor controller power module (mos) patch To the PCB board to dissipate heat through contact with the radiator. This structure makes the PCB board generally made of aluminum substrate or copper substrate. The cost is high, and the heat dissipation exchange is insufficient. The cooling effect on the power module is poor, and it is easy to cause the IGBT module to overheat. warm or damaged

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