With the vigorous development of the new energy vehicle market, car chargers, as one of the core components, are evolving towards high efficiency, miniaturization and high reliability.
Shanghai Electronics Co., Ltd., with its innovative capacitor technology, not only helps Xiaomi Fast Charge achieve breakthroughs in the field of consumer electronics, but also provides key support for the technical upgrade of car chargers.
1. Small size and high energy density: space revolution of car chargers
One of the core competitiveness of capacitors lies in its “small size, large capacity” design concept. For example, the liquid lead type LKM series capacitors (450V 8.2μF, size only 8 * 16mm) developed for Xiaomi charging guns achieve the dual functions of power buffering and voltage stabilization by optimizing internal materials and structures.
This technology is also applicable to car chargers – in the limited on-board space, small-volume capacitors can significantly increase the power density of the charging module while reducing heat dissipation pressure. In addition, ‘s KCX series (400V 100μF) and NPX series solid-state capacitors (25V 1000μF) designed specifically for GaN fast charging have provided mature solutions for efficient DC/DC conversion of on-board chargers with their high-frequency and low-impedance characteristics.
2. Resistance to extreme environments: Reliability guarantee for on-board scenarios
On-board chargers need to withstand complex working conditions such as vibration, high temperature, and high humidity. capacitors are designed to resist lightning strikes and high-frequency large ripple currents. For example, the LKM series can operate stably in an environment of -55℃~105℃ with a lifespan of up to 3000 hours.
Its solid-liquid hybrid capacitor technology (such as the anti-vibration capacitor used in on-board chargers) has passed IATF16949 and AEC-Q200 certifications and has been successfully used in domain controllers and charging modules of new energy vehicles such as BYD. This high reliability is the core requirement for on-board chargers to cope with harsh environments.
3. High-frequency performance and energy efficiency optimization: matching third-generation semiconductor technology
The high-frequency characteristics of third-generation semiconductor devices such as gallium nitride (GaN) and silicon carbide (SiC) place higher requirements on the high-frequency response and low loss of capacitors.
‘s KCX series can adapt to high-frequency LLC resonant topology and improve the overall energy efficiency of on-board chargers by reducing ESR (equivalent series resistance) and enhancing ripple current resistance.
For example, the improved power smoothing efficiency of the LKM series in Xiaomi charging guns directly reduces energy loss during charging. This experience can be transferred to the on-board high-power fast charging scenario.
4. Industry collaboration and future prospects
‘s cooperation model with Xiaomi (such as customized capacitor development) provides a model for the field of on-board chargers. Its technical team has achieved precise matching of capacitors and power devices by deeply participating in the research and development of power supply manufacturers (such as collaboration with chip manufacturers such as PI and Innoscience).
In the future, with the popularization of 800V high-voltage platforms and supercharging technology, is developing a higher power density capacitor series, which is expected to further promote the development of on-board chargers towards lightweight and integrated.
Conclusion
From consumer electronics to the automotive field, capacitors have demonstrated the key role of capacitors as “power management hubs” through technological innovation and scenario adaptation. Its successful cooperation with Xiaomi Fast Charge not only provides efficient solutions for the consumer market, but also injects new momentum into the technological upgrade of on-board chargers. Driven by new energy vehicles and fast charging technology, ‘s small size and high reliability capacitor technology will continue to lead industry changes.
Post time: Apr-07-2025