Under the global trend of advocating green travel and sustainable development, the new energy vehicle industry is flourishing and has become the core force for the transformation of the automotive industry. The new energy vehicle industry, as a key link in achieving carbon reduction in the transportation sector, shoulders an important mission. As a key link in the power system of new energy vehicles, the importance of the pre charging process is increasingly prominent, and the golden aluminum shell resistor plays an indispensable role in it, gradually becoming the "invisible guardian" to ensure the safe and efficient operation of new energy vehicles.

The T/GDGM 0025-2024 "Methods and Requirements for Quantifying Carbon Footprints of Greenhouse Gas Products - Aluminum Alloy Die Castings" implemented on October 1, 2024, proposes standards for quantifying the carbon footprint of aluminum alloy related products. This also encourages aluminum shell resistors to pay more attention to carbon emission management in the selection and production of aluminum alloy materials, in line with the dual carbon concept.

From the perspective of electrical performance, the advantage of gold aluminum shell resistance is obvious. It has a small volume and strong power carrying capacity, and can undertake high current limiting tasks in limited installation space, meeting the compact electrical layout requirements of new energy vehicles.

In practical application scenarios, gold aluminum shell resistors play a key role in the high-voltage circuits of new energy vehicles. When the new energy vehicle is started, the pre charging process officially begins: first, the pre charging relay is closed, and the battery voltage is charged to the capacitor in the motor controller through the gold aluminum shell resistor. As the capacitor voltage gradually increases, the charging current gradually decreases. When the capacitor voltage reaches about 95% of the battery voltage, the main relay closes and the pre charging relay opens. The vehicle completes the pre charging process and enters normal working state. In this process, the gold aluminum shell resistor precisely controls the current size, avoiding the impact of high current on the circuit, protecting electrical components, and reducing the spark arc phenomenon generated when the contactor contacts, improving the safety and reliability of vehicle starting.

At present, the application of gold aluminum shell resistors in the field of new energy vehicles is very extensive, almost becoming a standard configuration for various new energy passenger vehicles, commercial vehicles, and bus pre charging systems. With the continuous expansion of the new energy vehicle market, especially driven by the "dual carbon" target, the demand for gold aluminum shell resistors is showing an explosive growth trend. According to data from market research institutions, the global market size of pre charging resistors for new energy vehicles has been increasing year by year in the past few years. Gold aluminum shell resistors, with their excellent performance, have occupied a considerable market share and are expected to further expand their leading advantage in the future.