Analysis of Supercapacitor Applications in the Automotive Field

With the transformation of the automotive industry towards energy conservation, electrification, and intelligence, higher requirements have been put forward for the power performance, response speed, and safety and stability of energy storage devices. As an advanced energy storage device between traditional capacitors and batteries, supercapacitors, relying on their core advantages such as high power density, millisecond-level response, long cycle life, wide temperature adaptability, and environmental friendliness, have broken the application limitations of traditional energy storage devices and have been widely penetrated into various fields such as automotive power systems and auxiliary systems, becoming a key core component to promote automotive performance upgrading and achieve energy conservation and consumption reduction.

Power System Assistance: Enhance Power Performance and Reduce Energy Consumption

The instantaneous power demand of the automotive power system fluctuates greatly, especially in scenarios such as sudden acceleration and climbing, which have extremely high requirements for the instantaneous output capacity of energy storage devices. Supercapacitors can just make up for the shortcomings of traditional power sources, achieving dual improvements in power performance and energy efficiency. In hybrid vehicles, supercapacitors work synergistically with engines and power batteries. They can drive the vehicle independently at low speeds, avoiding the engine from being in an inefficient working range; during sudden acceleration or climbing, they quickly release instantaneous high power to assist the engine and power battery in supplying power, reducing the load on the main power source, enabling the vehicle to obtain a stronger power response, and reducing engine wear and energy consumption. In pure electric vehicles, supercapacitors can be used as auxiliary energy storage units to alleviate the performance degradation of power batteries under high-frequency charge and discharge, extend the service life of power batteries, and improve the acceleration performance and cruising stability of the vehicle.

Brake Energy Recovery: Realize Energy Recycling and Practice the Concept of Energy Conservation

A large amount of kinetic energy is generated during vehicle braking. Traditional vehicles mostly convert this energy into heat through the braking system, which is wasted. However, relying on the characteristics of rapid charge and discharge, supercapacitors can efficiently recover this redundant energy, realize energy recycling, and significantly improve the energy utilization efficiency of the vehicle. When the vehicle brakes, the supercapacitor can instantly absorb and store the kinetic energy generated by braking; when the vehicle starts and accelerates again, it quickly releases the stored energy to assist in driving the vehicle, thereby reducing the energy consumption of the engine or power battery, and lowering fuel consumption or power loss. This application is particularly effective in vehicles with frequent starts and stops such as urban buses and taxis. It not only reduces operating costs but also reduces exhaust emissions, conforming to the development trend of green travel, and the brake energy recovery efficiency of some models can reach more than 80%.

Start-Stop System Optimization: Ensure Extreme Working Conditions and Extend Component Life

The engine start-stop system is an important configuration for automotive energy conservation, but its frequent starts and stops will cause great loss to the storage battery. Especially in extreme environments such as low temperatures, the performance of the storage battery degrades significantly, and it is prone to difficulty in starting. Supercapacitors can work synergistically with storage batteries, acting as a "cardiotonic" for the start-stop system, optimizing start-stop performance and extending the service life of related components. At the moment of vehicle startup, the supercapacitor releases an instantaneous large current, sharing the load of the storage battery, avoiding the aging of the storage battery due to large current discharge, and ensuring that the engine starts smoothly in a very short time. Even in an extremely cold environment of -40℃, it can maintain stable starting performance. For taxis and urban commuter vehicles with frequent starts and stops, this configuration can greatly extend the service life of the storage battery, reduce later maintenance costs, and improve the smoothness and reliability of start-stop.

Auxiliary Power Supply System: Stabilize Voltage Output and Ensure Equipment Operation

The number of automotive on-board electronic devices is increasing day by day. The alternating work of air conditioners, stereos, navigation systems, driving recorders and other devices is likely to cause voltage fluctuations in the on-board circuit, affecting the operation stability of electronic devices and even damaging precision electronic components. Supercapacitors can be used as auxiliary power sources, acting as "voltage buffers" to quickly suppress voltage fluctuations in the circuit and provide stable power supply for on-board electronic devices. In addition, in the event of sudden vehicle power failure or storage battery failure, supercapacitors can temporarily supply power to key electronic devices, avoiding problems such as loss of navigation data and interruption of driving recorder video recording, providing additional protection for vehicle operation. At the same time, its wide temperature adaptability can ensure stable power supply for on-board electronic devices in complex environments such as high temperatures and severe cold without additional temperature control facilities.

Special Scene Applications: Adapt to Diverse Needs and Expand Application Boundaries

In addition to the above conventional applications, supercapacitors, relying on their unique performance advantages, also play an irreplaceable role in special automotive scenarios. In the field of high-performance supercars, supercapacitors can be used as core energy storage units. With ultra-high power density, they can realize millisecond-level energy release, providing the vehicle with extreme acceleration performance, while reducing the overall vehicle weight and optimizing the body weight distribution ratio. In the field of public transportation such as urban buses and trams, supercapacitors can achieve fast charging. Only a few minutes of charging can meet the operation needs of a long mileage, getting rid of the constraints of traditional overhead catenary, realizing "wireless operation", and reducing urban construction and operation costs. In special vehicles such as polar scientific research vehicles and construction machinery, the wide temperature adaptability and high reliability of supercapacitors can ensure the stable operation of the vehicle in extreme environments and cope with the challenges of complex working conditions.

With the continuous iteration of supercapacitor technology, especially the popularization of new processes such as dry electrodes, its cost continues to decrease and its performance continues to improve, and its application scenarios in the automotive field are constantly expanding. As a professional manufacturer in the supercapacitor field, Tsingyane Electronics relies on the technical accumulation of Shenzhen Tsinghua University Research Institute, deeply engages in powder film-forming dry electrode technology, and the automotive-grade supercapacitor products created, with the advantages of high reliability, high stability and environmental friendliness, perfectly adapt to various application scenarios such as automotive power assistance, brake energy recovery, and start-stop optimization, providing customized energy storage solutions for automotive manufacturers. In the future, supercapacitors will be further deeply integrated with power batteries and fuel cells to form a complementary hybrid energy storage system. Tsingyane Electronics will also continue to innovate technologically, promote the upgrading of supercapacitor technology, which can not only improve the power performance and energy-saving effect of automobiles but also promote the automotive industry to develop in a more green, efficient and reliable direction, injecting new momentum into the upgrading of automotive energy storage technology.