Power battery thermal management system based on combination of two-stage heat pipe and vehicle body

Abstract

The invention discloses a power battery thermal management system based on combination of a two-stage heat pipe and a vehicle body. The system comprises a three-dimensional ultrathin heat pipe group and a vehicle body heat pipe. The three-dimensional ultrathin heat pipe set is composed of a plurality of ultrathin evaporation plates and a condenser. A gas-liquid splitter plate is arranged in the condenser. The bottom surface comprises a reducing interface. The ultrathin evaporation plate is connected with the tapered interface through a sealing ring and a self-clamping lantern ring. The singlepower battery is tightly attached to the two ultrathin evaporation plates of the three-dimensional ultrathin heat pipe set, the upper surface of the condenser is tightly attached to a bottom heat absorption cavity of the automobile body heat pipe through a high-heat-conduction material, and heat generated by the power battery can be rapidly transmitted to an automobile roof through two-stage gas-liquid phase change heat transfer to dissipate heat to the environment. The power battery heat management system and the automobile body structure are ingeniously integrated, the heat dissipation areais increased, heat dissipation can be conducted through airflow in the movement process of an automobile, the structure is simple, the battery pack structure is compact, the temperature control performance is good, and the wide market prospect is achieved.

Description

technical field [0001] The invention belongs to the field of power battery thermal management, and in particular relates to a power battery thermal management system based on the combination of a two-stage heat pipe and a vehicle body. Background technique [0002] Energy shortage and environmental pollution have become difficult problems facing the development of the world today, and the electric transformation and development of the automobile industry has great potential in the field of energy conservation and emission reduction. New energy electric vehicles occupy an important position in new energy vehicles because of their green and environmental protection advantages. The power of new energy electric vehicles comes from a battery pack composed of multiple single power batteries. During the process of charging and discharging, the power battery generates heat due to incomplete energy conversion. If the heat dissipation is not timely, it will cause the local temperatur...

AI Technical Summary

Problems solved by technology

Although the heat pipe, as an efficient heat transport medium, can quickly transport the heat absorbed from the battery to the outside of the battery system, the heat dissipation capacity of the condensing end is the bottleneck factor restricting the performance of the heat pipe cooling system.

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