A vehicle inverter

Abstract

The invention discloses a vehicle inverter comprising a housing; a cooling base plate disposed between the housing and a motor; an upper cover fixed to an upper end of the housing for sealing the opening in the upper end of the housing, wherein the cooling base plate is fixed with a capacitor, a power module, a current sensor and an AC terminal block; the upper cover is fixed with a DC terminal block; and a circuit board is arranged above the power module and the current sensor. According to the vehicle inverter of the present invention, the power module, the circuit board, the capacitor, the current sensor and the AC terminal block are integrated on the cooling base plate through a specific position relation; the upper cover is installed on the housing; the DC terminal block is integrated on the upper cover of the inverter to reduce busbars and sensor wire harnesses in other inverters so as to satisfy requirements for a more compact structure, a better heat radiation effect, higher electromagnetic compatibility, high reliability and axial arrangement with the motor of the vehicle inverter.

Description

technical field [0001] The invention relates to an inverter, in particular to an inverter for vehicles. Background technique [0002] In new energy vehicles, the motor inverter is a key component to realize the DC power supply of the battery, the AC power conversion of the motor, and the driving operation of the motor. It belongs to the core power component of the electric vehicle, and it must be able to operate continuously and reliably. [0003] At present, the design level of domestic motor inverters is still far behind developed countries, mainly manifested in large volume, poor integration, poor heat dissipation, and poor electromagnetic compatibility. At the same time, OEMs urgently need to use 48V technology to meet China’s fourth-stage fuel consumption requirements with the lowest cost and minimal changes to the vehicle, resulting in tight layout space for the motor system and large cost constraints for the motor system. The integration of the motor and the structur...

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Problems solved by technology

This patent only describes the composition of the inverter, but does not describe the structure of the inverter

Patent Document 4 (CN201410205998.9) discloses a method for integrating a traction motor and an inverter and an integrated motor system, the motor system includes a motor and an inverter, and the inverter is radially integrated with the The motor is integrated, the inverter is cooled by forced liquid cooling, and the internal busbar structure of the inverter is long, which may easily cause the internal heat of the inverter to rise and the electromagnetic environment to be poor

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