Non-contact liquid cooling system for high-power charging and liquid cooling method thereof

Abstract

The invention discloses a non-contact liquid cooling system for high-power charging and a liquid cooling method of the non-contact liquid cooling system, the non-contact liquid cooling system comprises a liquid cooling cable, a cable built-in pipeline is arranged in the center of the liquid cooling cable, a quick connector is arranged at the rear end of the cable built-in pipeline, and the cable built-in pipeline is coated with a cable conductor. A cable outer insulating layer is arranged on the outer side of the cable conductor, a power terminal is connected to the rear end of the cable conductor in a pressing mode, the quick connector is fixedly installed on a liquid cooling cavity, and an insulating heat conduction piece is arranged in the liquid cooling cavity. According to the non-contact liquid cooling system for high-power charging and the liquid cooling method of the non-contact liquid cooling system, heat generated on the power terminals during charging is transmitted to and exchanged to the cooling liquid through the insulating heat conduction piece, the rapid circulating cooling liquid transmits heat, the cooling is rapid, a non-contact mode is adopted, the cooling liquid is safer, the short-circuit risk is eliminated, and through the I-shaped design of the insulating heat conduction piece, the heat dissipation is more comprehensive and effective.

Description

technical field [0001] The invention relates to the field of liquid cooling systems, in particular to a non-contact liquid cooling system for high-power charging and a liquid cooling method thereof. Background technique [0002] The replacement of fuel vehicles by new energy vehicles has become the general consensus of all countries in the world. With the continuous advancement of science and technology, new energy vehicles are also developing rapidly in the direction of lightweight, integrated and intelligent. The requirements for charging power and charging speed are getting higher and higher. In order to increase the charging speed and shorten the charging time, it is necessary to study from the aspects of increasing the charging voltage and charging current. Simply increasing the cross-sectional area of ​​the conductor to increase the current carrying capacity cannot meet the actual use. Requirements; reducing the cable specification while increasing the charging current...

AI Technical Summary

Problems solved by technology

The requirements for charging power and charging speed are getting higher and higher. In order to increase the charging speed and shorten the charging time, it is necessary to study from the aspects of increasing the charging voltage and charging current. Simply increasing the cross-sectional area of ​​the conductor to increase the current carrying capacity cannot meet the actual use. Requirements; reducing the cable specification while increasing the charging current and improving the insulation of the entire charging system, ensuring that the temperature rise during the charging process meets the safety standards has become an urgent technical problem to be solved. At present, the existing technology also proposes a high-power liquid-cooled charging gun. In general liquid-cooled cables, the cooling pipe is led out from the conductor, and the conductor and the terminal are crimped. The cooling only works on the cable part. If the terminal crimping area is not cooled, the temperature will still be high; in the traditional cooling technology, the cooling liquid and the live components The technical solution of direct contact can only be applied to the cooling medium with insulating ability, and the cooling medium with insulating ability, such as silicone oil and insulating oil, has the characteristics that the viscosity changes with temperature. In the actual cooling cycle, the efficiency is low and the heat dissipation is slow. This limits the upper limit of the current during high-power charging; how to quickly take away the heat in the terminal crimping area and contact area, and reduce the temperature has become a technical difficulty for the entire circulation system

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