New energy vehicle power source controllable heating piece

Abstract

The invention discloses a new energy vehicle power source controllable heating piece which comprises a doughnut-shaped metal frame. The outer lateral side of the doughnut-shaped metal frame is vertically welded with a fixed connection block, a fixed through hole is formed in the middle of the fixed connection block and penetrates the upper and lower faces of the fixed connection block, rotating columns are connected between the inner side walls of the doughnut-shaped metal frame in an inserted manner and are in a left-right symmetric state on the inner side walls of the doughnut-shaped metal frame, metal conduction pieces are welded between one ends, away from the doughnut-shaped metal frame, of the rotating columns, a metal contact hole is formed in one end of the side face of each metalconduction piece and penetrates the upper surface of the corresponding metal conduction piece to extend to the inside, one end, extending to the inside of the corresponding metal conduction piece, ofeach metal contact hole is welded with a heating lead, and a metal contact column is vertically welded on one side face, away from the corresponding metal contact hole, of each metal conduction piece.The device can cool a power source when the power source is too high in temperature during heating.

Description

technical field [0001] The invention relates to the technical field of heating sheets, in particular to an adjustable heating sheet for a new energy vehicle power supply. Background technique [0002] With the current environmental pollution becoming more and more serious, most cities are promoting pure electric vehicles. Pure electric vehicles use batteries to convert kinetic energy into kinetic energy. Unlike gasoline vehicles, the gas emitted by gasoline vehicles pollutes the air environment. The most suitable working (charging and discharging) temperature for power lithium batteries is 35-45°C. When used in severe winter regions (such as temperatures below -25°C), the discharge performance and charge acceptance of power lithium batteries are greatly reduced due to the influence of low temperature. For example, if the power battery pack is arranged under the floor of the compartment, even if its bottom is completely sealed by the underbody, it will inevitably be affected ...

AI Technical Summary

Problems solved by technology

[0002] With the current environmental pollution becoming more and more serious, most cities are promoting pure electric vehicles. Pure electric vehicles use batteries to convert kinetic energy into kinetic energy. Unlike gasoline vehicles, the gas emitted by gasoline vehicles pollutes the air environment. The most suitable working (charging and discharging) temperature for power lithium batteries is 35-45°C. When used in severe winter regions (such as temperatures below -25°C), the discharge performance and charge acceptance of power lithium batteries are greatly reduced due to the influence of low temperature. For example, if the power battery pack is arranged under the floor of the compartment, even if its bottom is completely sealed by the underbody, it will inevitably be affected by the low temperature outside, so that the heat generated by the battery discharge during driving may be less than the heat dissipation of the battery pack to the outside, resulting in The temperature of each battery cell is not within the optimal working range; when parking and charging outdoors, each battery cell stops cooling, and at the same time, the air duct does not convey the isothermal air in the cabin to maintain the temperature in the bag, resulting in both fast charging and slow charging. Low efficiency; when parking and starting in the morning, if the electric vehicle is parked outside all night, it is extremely difficult to start in a short period of time. The above problems will affect the power and driving range of electric vehicles in severe cold regions, and even affect the power battery. service life, which seriously limits the scope of its use and promotion

[0003] For the traditional heating sheet for heating the power supply of pure electric vehicles, the power supply is wrapped inside, and the power supply is heated when the external temperature is low, so that the pure electric vehicle can be started at low temperature, but in the vehicle After driving for a period of time, the battery heats up. The traditional heating sheet wraps the battery, and the heat of the battery cannot be dissipated, which makes the temperature of the battery higher and higher, which brings danger.

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