Improved electric compressor for new energy automobile

Abstract

The invention provides an improved electric compressor for a new energy automobile. The electric compressor comprises a rear cover part, a static scroll plate part, a movable scroll plate, a bearing seat part, a motor shell part and a controller part, an integrally closed cavity is formed between the rear cover part and the motor shell part, the rear cover part comprises a rear cover and a separation pipe, and a special-shaped sinking cavity is formed in the inner side of the rear cover, an exhaust step hole is formed in the rear cover, and a separation pipe is arranged in the exhaust step hole, a heat dissipation protruding block is arranged on the outer side of the top end of a motor shell in the motor shell component, the controller component comprises a controller shell and a heat dissipation plate, limiting cylinders are arranged at the four corners of the bottom end of the controller shell, a controller sealing gasket is arranged between the controller component and the motor shell component, and the heat dissipation plate is connected with the heat dissipation protruding block in an attached mode. According to the electric compressor, the oil return effect can be effectivelyimproved, the damage to the cross section of the scroll plate is prevented, the leakage failure rate of the whole machine is reduced, the installation failure rate of the controller is reduced, and the sealing effect is improved.

Description

technical field [0001] The invention relates to an electric compressor, in particular to an improved electric compressor for new energy vehicles. Background technique [0002] As many countries in Europe have announced the timing of the ban on the sale of fuel vehicles, although it is unlikely that the country will ban the sale of fuel vehicles in 2025, as the national policy guides the development of new energy vehicles, the improvement of new energy vehicles It has been paid more and more attention; and because of the high volumetric efficiency of the scroll compressor, the controller controls the motor to drive the scroll to realize the stepless speed regulation requirement. It has the characteristics of compact structure, small size, light weight and convenient installation, so it is generally used as The power mechanism of new energy vehicles is used in parking air conditioners, new energy vehicles and hybrid passenger vehicles. [0003] However, with people's increasi...

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Problems solved by technology

[0003] However, with people's increasing production and living needs, more and more problems have been found in the existing electric compressors, for example: 1. The back covers of the existing electric compressors mostly use exhaust holes and return holes. The oil holes are connected to each other. In this way, in actual work, foreign matter and impurities are easy to form deposits at the bottom of the holes, which will cause dirty blockage to the filter screen, resulting in poor oil return from the compressor and reduced operational reliability; 2. Due to the electric compression The scroll of the machine works in a very clean environment. When foreign objects or impurities enter, the end face of the scroll is often damaged, which will inevitably cause failures such as leakage in the compressor or poor cooling effect; 3. In the actual production process of the electric compressor It is often found that leakage occurs between the motor casing and the three-pin terminal. The gasket used cannot be reused due to the end face sealing method attached to the plastic, and the leakage rate is high, resulting in production rework and reducing production efficiency; 4. As the brain of the electric compressor, the controller is installed together with the motor housing components, and needs to be dustproof and waterproof. However, in the actual assembly process, it is also prone to uneven compression and the phenomenon that the mounting feet are easily interrupted, which affects the The sealing effect of the controller

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