Heat management pipe of electric-vehicle power battery and balance method and calibration system thereof

Abstract

The embodiment of the invention discloses a heat management pipe of an electric-vehicle power battery and a balance method and calibration system thereof. The heat management pipe comprises a cooling-liquid main loop and a plurality of branch pipes respectively connected to the cooling-liquid main loop. Each branch pipe comprises a water chamber for cooling a corresponding battery module, and a first pressure meter is arranged at an inlet of the water chamber of each branch pipe; a first flow meter is arranged at an outlet of the water chamber of each branch pipe; a first orifice valve installation position is arranged between an inlet of each branch pipe and the inlet of the water chamber of the branch pipe, and an adjustable orifice valve assembly or a fixed orifice valve assembly calibrated based on the adjustable orifice valve assembly is detachably installed at each first orifice valve installation position. By means of the heat management pipe and the balance method and calibration system, the temperature balance between cells can be improved.

Description

technical field [0001] The present invention relates to the technical field of automobiles, and more specifically, to a thermal management pipeline of a power battery of an electric vehicle, an equalization method and a calibration system thereof. Background technique [0002] Energy shortages, oil crises and environmental pollution are intensifying, which have a huge impact on people's lives and are directly related to the sustainable development of the country's economy and society. All countries in the world are actively developing new energy technologies. As a new energy vehicle with reduced oil consumption, low pollution, and low noise, electric vehicles are considered to be an important way to solve the energy crisis and environmental degradation. Hybrid vehicles take into account the advantages of pure electric vehicles and traditional internal combustion engine vehicles at the same time. On the premise of meeting the requirements of vehicle power and mileage, it eff...

AI Technical Summary

Problems solved by technology

[0004] In the branch pipeline of the existing thermal management system pipeline, the pressure value of the water inlet and outlet of each water chamber is automatically adjusted by the system. Inconsistency in liquid flow creates a temperature difference between the batteries, so the temperature balance is not good

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