1. Changes in material properties under low temperature environment
In low temperature environment, the material properties of New Energy Electronic Control Cover will change in many aspects. If the electronic control cover is made of metal materials (such as aluminum alloy), its toughness will decrease significantly as the temperature decreases. The thermal motion of the atoms in the aluminum alloy slows down, and the lattice structure shrinks, making the material more brittle. This may cause it to be more likely to break when subjected to external impact forces (such as bumps or minor collisions during vehicle driving) instead of plastic deformation as at room temperature. At the same time, low temperature will slightly increase the conductivity of the metal, but this change has little effect in the actual use of the electronic control cover.
For some electronic control covers made of engineering plastics, low temperature will make the plastic hard and brittle. The molecular chain of the plastic has reduced mobility at low temperatures, and its elasticity and flexibility are reduced. This may affect the sealing performance between the electronic control cover and other components, because the seal is usually maintained by the elastic deformation of the plastic. For example, the rubber sealing ring used for sealing may lose its elasticity at low temperatures, resulting in poor sealing, making the electronic control system vulnerable to intrusion by moisture, dust, etc.
2. Changes in material properties under high temperature environment
The impact of high temperature on the material properties of New Energy Electronic Control Cover cannot be ignored. The strength and hardness of the metal electronic control cover will decrease at high temperature. This is because high temperature intensifies the thermal motion of metal atoms, changes the lattice structure, and increases internal defects, which leads to a decrease in the mechanical properties of the material. If the electronic control cover also bears a certain support or protection role, this reduction in strength and hardness may affect its protective effect on the electronic control system.
For engineering plastic electronic control covers, high temperature will soften them. Softened plastics may deform, affecting the shape accuracy of the electronic control cover, and then affecting its assembly relationship with other components. Moreover, the chemical stability of plastics may decrease at high temperatures, and aging may occur easily. For example, if it is in a high temperature environment for a long time, the plastic may change color, crack on the surface, etc., which not only affects the appearance, but also may further weaken its mechanical properties and protective functions. In addition, some plastics may release volatile substances at high temperatures, which may pose a potential threat to the reliability and safety of the electronic control system.
Whether the New Energy Electronic Control Cover is made of metal or engineering plastic, these changes in material properties under different temperature environments require that temperature factors be fully considered during design and use, and corresponding measures be taken to ensure that the electronic control cover can function normally in various environments.
