Electric vehicle battery compartment constant temperature system adopting vehicle-mounted photovoltaic power generation and charging

Abstract

The invention relates to an electric vehicle battery compartment constant temperature system adopting vehicle-mounted photovoltaic power generation and charging, which comprises a vehicle-mounted photovoltaic power generation device based on the characteristics of an electric vehicle battery, a charging and discharging system for achieving energy storage and delayed release according to a temperature monitoring device, and an electric vehicle battery compartment constant temperature device, wherein the vehicle-mounted photovoltaic power generation device is connected with the electric vehiclebattery compartment constant temperature device through an inverter; the charging and discharging system is connected with the vehicle-mounted photovoltaic power generation device and is connected with the electric vehicle battery compartment constant temperature device through the inverter; the temperature monitoring device is positioned in the electric vehicle battery compartment heat managementarea in which the electric vehicle battery pack is arranged and is connected with the electric vehicle battery compartment constant temperature device. The electric vehicle battery compartment constant temperature system maintains the temperature of the battery compartment in the range of 20-40 DEG C. The electric vehicle battery compartment constant temperature system has the advantages of simple structure, high efficiency, flexibility, energy conservation, environmental protection and the like, has lower investment and manufacturing cost, and application and maintenance is facilitated.

Description

technical field [0001] The invention belongs to the technical field of solar photoelectric conversion, thermal equipment, and energy efficient utilization, and specifically relates to a constant temperature system for a battery compartment of an electric vehicle that adopts vehicle-mounted photovoltaic power generation and charging. Background technique [0002] In a low temperature environment, the internal resistance of the lithium-ion power battery of an electric vehicle increases, and the rechargeable power decreases, which reduces the energy recovery rate of the battery. In addition, the open circuit voltage and voltage platform of the battery decrease, resulting in a decrease in the discharge capacity of the battery. Therefore, affected by the low temperature environment, when using electric vehicles in winter, not only the charging time and electricity cost will increase significantly, but also the life of the battery will be reduced rapidly, and the cruising range of ...

AI Technical Summary

Problems solved by technology

However, the vast majority of electric vehicle power batteries currently do not have good heating and cooling systems or the heating and cooling effects are not ideal, which directly affects the convenience of electric vehicles traveling in high temperature, high discharge rate, and low temperature environments, as well as the user experience. The experience effect is not conducive to the further promotion and use of electric vehicles

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