Spiral heating rod-based solid-state lithium battery and heating device and heating control method thereof

Abstract

The invention discloses a spiral heating rod-based solid-state lithium battery and a heating device and heating control method thereof. The spiral heating rod-based solid-state lithium battery comprises a solid-state lithium battery and a heating rod assembly, wherein the solid-state lithium battery comprises a metal shell, a battery insulation film, a positive active substance, a solid-state electrolyte, a negative active substance, a negative current collector and a positive current collector, the heating rod assembly comprises a spiral heating rod, a ceramic threaded structure, an insulation heat conduction medium, a spiral heating rod positive wire, a spiral heating rod negative wire and a heating rod interface, and the solid-state battery can be directly energized and heated from theinterior instead of the spiral heating rod inserted into the solid-state battery. With the adoption of the solid-state lithium battery, a thermal runaway accident probably caused by an emergency powersupply for rail traffic under high temperature or other extreme working conditions is effectively prevented; moreover, a heating system is directly configured for the single solid-state battery, thedefect that the charge-discharge performance of the solid-state battery under a normal temperature is reduced is overcome; and compared with surface heating, the internal heating has the advantage that the heating efficiency is improved.

Description

technical field [0001] The invention relates to the field of battery thermal management, in particular to a solid-state lithium battery for rail vehicles based on an internal spiral heating rod, a heating device and a heating control method thereof. Background technique [0002] With the rapid development of my country's rail transportation, rail transportation has become the main force of modern transportation. It not only has the characteristics of fast speed and large transportation volume, but also is more comfortable and convenient. In addition, the safety of rail transit is more prominent than other means of transportation. Once fatal failures occur in rail transit technical equipment, it will often cause major traffic accidents, and even cause casualties, causing huge social impact. Every part of the traffic has put forward higher security requirements. The backup power supply for rail transit is a power device that can be used to make rail vehicles start normally an...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a solid-state lithium battery based on internal spiral heating rods for rail vehicles, which solves the problem of thermal runaway caused by overheating and extreme conditions of existing liquid lithium batteries for the high safety requirements of rail vehicles problems and performance degradation caused by low electrolyte conductivity at room temperature for solid-state batteries

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