Integrated inverter structure

Abstract

The invention relates to the field of electric vehicle manufacturing, and relates to an integrated inverter structure. The integrated inverter structure comprises two sets of inverters, an upper shell, a lower shell, an upper cover plate, a lower bottom plate and a fixing bracket. The upper shell and the lower shell are all in open box shapes, the upper shell and the upper cover plate form a box body, and the lower shell and the lower bottom plate form a box body, wherein the two box bodies are independent of each other. A set of 12 V inverters are arranged in the upper shell, a set of 24 V inverters are arranged in the lower shell, the two box bodies are combined into a whole through a plurality of bolts penetrating through the periphery of the box bodies, a fixing bracket is arranged around the lower shell body, a concave cooling water channel is formed in the upper surface of the lower shell, the side face of the lower shell is provided with an inlet tube and an outlet tube for connecting the cooling water channel and installing holes of connecting and inserting pieces of the inverters, circular grooves are formed in the periphery of the cooling water channel of the lower shell, the grooves are filled with sealant, and the installing holes of the connecting and inserting pieces of the inverters are formed in the side face of the upper shell. The integrated inverter structure is favorable for two kinds of inverter power supply systems for sharing one cooling system, and thus occupied space is reduced.

Description

technical field [0001] The invention relates to the field of electric vehicle manufacturing, in particular to an integrated inverter structure. Background technique [0002] In the Twelfth Five-Year Plan and the "Energy Saving and New Energy Automobile Industry Development Plan (2011~2020)", the country put forward incentive policies for new energy vehicles. An inverter is a power conversion device that converts a high-voltage direct current into a low-voltage direct current. The energy system of a new energy vehicle is the energy source of the entire vehicle, and the inverter is a transfer station for the energy of the low-voltage system of the entire vehicle. Because some new energy trucks require two low-voltage power supply systems (namely 12V and 24V), for new energy vehicles with limited vehicle layout space, an integrated inverter becomes essential. [0003] At present, there are problems in heat dissipation and maintenance in the structure of high-power high-vo...

AI Technical Summary

Problems solved by technology

The housing described in this patent includes a detachable front shell and a rear shell, and the bottom plate is surrounded by vertical plates arranged around the bottom plate. However, this structure uses waterproof sealing strips at the joints between the plates, which increases the gap. Risk of penetration into the housing interior

Although it can be disassembled, replacing the waterproof sealing strip requires dismantling all panels, which increases the workload

At the same time, the structure of the patent can only accommodate the placement of one inverter circuit board, and cannot store two inverter power supply circuit boards.

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