Automatic-temperature-control automobile battery box

Abstract

The invention relates to an automatic-temperature-control automobile battery box which comprises a battery box body. The battery box body is provided with an air inlet and an air outlet which can be controlled to be opened and closed. The battery box body is internally provided with an air inlet uniform wind field, an air outlet uniform wind field and a battery pack composed of a plurality of single batteries. An air passing hole is formed in the battery pack. The two ends of the air passing hole are communicated with the air inlet uniform wind field and air outlet uniform wind field respectively. At least one battery temperature sensor is arranged on the battery pack. An environment temperature sensor is arranged outside the battery box body. The battery temperature sensor and the environment temperature sensor are both connected with a BMS control main board. The uniform wind fields penetrating through the battery pack are formed in the battery box body, a unique efficient cross flow fan and a temperature control system are arranged at the inlet end of an air duct, the temperature control system can be selected to be in a cold wind mode, a hot wind mode or a natural wind mode, the variable-flow uniform wind fields can be generated through the speed adjustment of the cross flow fan, and therefore heat exchange can be achieved for each battery, and the temperature of the battery pack is automatically raised or lowered.

Description

technical field [0001] The invention relates to the field of electric vehicle battery boxes, in particular to a self-temperature-controlling vehicle battery box that can automatically control the temperature inside the battery box. Background technique [0002] Electric vehicle lithium battery, as the power source of electric vehicles, its performance directly affects the operation effect of the whole vehicle, and the capacity and service life of its battery pack are important indicators for evaluating the performance of electric vehicles. However, for the battery packs in the existing electric vehicles, the temperature of each single battery is different due to the difference in heat generation and positional heat dissipation capacity of each battery pack during its use, and because there is no uniform wind field design in the battery box, the Its lifespan is directly affected. In a specific environment, when the load of the battery pack changes greatly, the temperature of ...

AI Technical Summary

Problems solved by technology

The temperature control in the battery box is a very important factor that must be considered to protect the power battery. The requirement of the electric vehicle battery pack is to keep the battery pack running within a certain temperature range, such as +10°C to 45°C. The core is to ensure The consistency of the temperature of each single battery, such as all within the range of ±1°C, and the provision of battery temperature consistency can effectively extend the service life of the battery, and realize the operation of the battery pack with the maximum capacity, while effectively reducing operating costs etc., to obtain the beneficial effects of cost-effective, safer new electric vehicles and stronger market competitiveness, but the number of temperature collection points in the existing battery box is not enough and the layout of temperature points is unreasonable, and the data processing ability is not strong, consistent Sexual temperature control is far from meeting the requirements

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