Study on the long-term impact of extreme temperature conditions on the physical properties and charging performance of a to c fast charging cable
Publish Time: 2024-12-18
In today's era of growing demand for fast charging of electronic devices, the performance stability of a to c fast charging cable has attracted much attention, especially when facing extreme temperature conditions, the impact is far-reaching and complex.
From the perspective of physical properties, high temperature environment is a severe test. When the temperature soars, the outer skin material of the fast charging cable is the first to bear the brunt. Common plastic outer skins are easy to soften and deform under continuous high temperatures, losing their original protection and binding ability for the internal cables. Long-term exposure may even cause melting and adhesion, causing the cables to be entangled and knotted, and the convenience of use is gone. The metal material of the wire core expands when heated, the resistance increases, and the loss of electric energy during cable transmission increases. According to the law of resistance, the resistance increases proportionally for every certain degree of temperature increase, and the heating becomes more serious, forming a vicious cycle, which not only reduces the charging efficiency, but also buries safety hazards, such as local overheating causing accelerated aging of the insulation layer and a sudden increase in the risk of short circuit.
Low temperature environment is also tricky. Low temperature causes the material to become brittle, and the toughness of the plastic outer skin is sharply reduced. A slight bend may cause it to crack, exposing the internal wires and damaging the insulation performance. The metal wire core shrinks at low temperatures, which is mismatched with the shrinkage of the outer skin, causing internal stress accumulation. After repeated alternation of hot and cold, the wire is easy to break, the crystal structure at the microscopic level will also change, and defects such as dislocations will increase, affecting conductivity.
Focusing on charging performance, the stability of the fast charging protocol chip is out of control at high temperatures. The chip that should accurately regulate the voltage and current to adapt to the device is misjudged or failed due to high temperature, and cannot maintain the optimal charging power. The device charges slower or even stops charging to protect itself. At low temperatures, the battery chemical reaction rate is limited. Even if the fast charging cable can transmit power normally, the device battery's ability to accept power decreases. At the same time, the cable's own resistance increases, further weakening the actual charging power. The overall charging time is greatly extended, seriously affecting the user experience. The long-term extreme temperature working conditions greatly reduce the life of the fast charging cable. Frequent replacement increases the cost of use and waste of resources. It is urgent to develop new fast charging cable materials and technologies that are resistant to extreme temperatures.
