Thermal management system for batteries

Abstract

The invention provides a thermal management system for batteries. A battery module comprises a plurality of batteries and a hexagonal honeycomb heat-conducting material hollow structure, wherein the batteries are internally tangentially embedded into the hexagonal honeycomb heat-conducting material hollow structure; channels are arranged between adjacent hexagons of the hexagonal honeycomb heat-conducting material hollow structure; the channels form a passage; the passage is filled with a heat exchange medium; the passage is connected with a heating and cooling device; the passage is provided with a thermocouple; the heating and cooling device and the thermocouple are connected with a controller separately; and the controller controls the heating and cooling device to heat or cool the battery module according to the temperature fed back by the thermocouple. According to the thermal management system for the batteries, the batteries have relatively good safety, and the operation stability of the batteries is improved.

Description

technical field [0001] The invention relates to the field of new energy technology, in particular to a battery thermal management system. Background technique [0002] In order to solve the problems of traditional energy consumption and air pollution, the new energy automobile industry has emerged as the times require. Thanks to policy support and public acceptance of electric vehicles, new energy vehicles are booming. Due to the increase in output and market share, the safety of new energy vehicles has also attracted increasing social attention, especially after the Tesla electric vehicle spontaneous combustion incident, the safety of new energy vehicles was once pushed to the forefront of public opinion. As the core technology of new energy vehicles, the safety of power batteries almost determines the safety of new energy vehicles, and the temperature is the key to the stable operation of power batteries. At present, most of the power batteries are lithium-ion batteries....

AI Technical Summary

Problems solved by technology

[0003] The Chinese patent with the publication number CN104600398A discloses a thermal management device for cylindrical power batteries based on microchannels. The device uses a casing to tightly wrap the cylindrical battery, which easily deteriorates the heat accumulation in the central area, and the design of the cylindrical casing is also doomed. There will be too many unusable gaps in adjacent positions, which reduces the space utilization rate; at the same time, the design has installed liquid storage tanks on the upper and lower sides, which increases unnecessary weight. When the power battery is used in a product such as a car that has extremely high requirements for space and weight, the device is unreasonable; in addition, the device has no heating function, which is not suitable for electric vehicles that need to be charged and driven in cold winter environments. Definitely a design flaw

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