Power battery heat management system based on metal plate type pulse heat pipes

Abstract

The invention discloses a power battery heat management system based on metal plate type pulse heat pipes. The power battery management system comprises a power battery support, a battery module box body and a box body top cover, wherein the power battery support comprises a plurality of single metal plate type pulse heat pipes, and two or more than two single batteries which are connected in series or in parallel are placed on the support. The power battery management system is characterized in that the surface of each single battery can be in close contact with the metal plate support, the pulse heat pipe in the metal plate is bent in a reciprocating way and is provided with an evaporation end and a condense end, the evaporation end is a part where the metal plates and the surfaces of the batteries are in contact, and the condense end is a part downwards extending from the metal plates, is arranged under the surfaces of the batteries and can play a role in supporting a battery module; and further, wind gaps with the same size and at the same position are formed below the metal plates and the box body and can be used for timely air drawing so that the heat of the condense end of the pulse heat pipe can be dissipated through forced convection. By the system, the technical problems of high-temperature heat dissipation, energy cyclic utilization and the like of a power battery can be efficiently and timely solved; the pulse heat pipes and the support are integrated, the space is fully saved, and the system is suitably used for various large-, medium- and small-sized apparatus depending on electrical driving and has very board market space.

Description

technical field [0001] The invention relates to a power battery thermal management system, in particular to a power battery thermal management system of a metal plate type pulsating heat pipe. Background technique [0002] Since my country launched a major electric vehicle technology project in 2001, after the scientific and technological reforms of the two five-year plans and the successful application of the Olympic Games, the World Expo, and the "Ten Cities, Thousand Vehicles" demonstration platform, China's electric vehicles have grown from scratch, and the technology is in continuous progress. The state has established a technology system for the entire electric vehicle industry chain with independent intellectual property rights. Then, the constraining issue of whether electric vehicles can be industrialized that has been receiving much attention has not yet been overcome-the safety of electric vehicle batteries. Under the operating conditions of the power battery, wit...

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Problems solved by technology

The use of air cooling will achieve cooling of the battery to a certain extent, but with the increasing requirements for battery heat dissipation, it is necessary to design various auxiliary components or systems such as air ducts and baffles, which are expensive to design, difficult to process, and occupy The space of the whole vehicle is large, and the converted cost cannot adapt to the endurance of electric vehicles; according to the theory of convective heat transfer, the effect of liquid cooling is excellent, but considering factors such as the complexity of the system, high sealing requirements, and the need for additional booster pumps and pipelines to achieve circulation, etc., Processing and production are cumbersome and costly; using the high latent heat characteristics of phase change materials in the phase change range can make the power battery module reach a state of cooling and uniform temperature, ensuring that the battery works in the normal operating temperature range, but its high heat storage capacity Difficult to transfer heat energy to the outside

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