01 The development trend of new energy drives the hard-core demand of OBC market

As an important strategic emerging industry in my country, the new energy vehicle industry has long been highly valued by the government. The government has introduced a series of policies to encourage and support the development of the new energy vehicle industry, which has played an important role in promoting the development of new energy vehicles and key components.

The power electronic system of new energy vehicles generally includes three parts: electric vehicle on-board charger (AC-DC), inverter (DC-AC) and DC-DC converter. The on-board charger generally adopts a one-car-one-charger mode, and the input is 220V AC. According to data, the market size of my country’s OBC industry in 2022 is about 206.6 billion yuan, a year-on-year increase of 95.6%.

The on-board charger (OBC) refers to a charger fixedly installed on an electric vehicle, which has the ability to safely and automatically charge the power battery of the electric vehicle. The charger can dynamically adjust the charging current or voltage parameters based on the data provided by the battery management system (BMS), perform corresponding actions, and complete the charging process.

On Board Charger

02 Traditional capacitors are restricted everywhere and stuck in a dilemma. How to break the dilemma?

At present, new energy vehicles have become a hot topic in the global automotive industry. Although new energy vehicles have made great progress, there are still many problems to be solved, such as range anxiety, charging convenience, fast charging, and the timeliness of traditional devices and new technologies.

The main core of solving the on-board OBC fast charging technology is how to increase the charging power of the whole vehicle. The technical way to increase the charging power is how to increase the voltage or current. If the current is increased, it must be heavier. The cost of increasing power consumption and more auxiliary equipment must be used. Therefore, major manufacturers will move from the 400V voltage platform to the 800V or even higher voltage platform.

However, this process puts forward ultra-high voltage requirements for traditional electronic devices, especially bus DC capacitors. Due to the high output voltage of the high-voltage power supply, traditional capacitors can usually only withstand lower voltages. The dielectric material inside the capacitor will be damaged under high voltage, resulting in breakdown. If the bus capacitor is not able to withstand enough voltage, it is easy to have breakdown, burnout and other faults, affecting the normal operation of the entire system.

In order to solve the problems in current on-board charger applications, YMIN snap-in aluminum electrolytic capacitors have launched two new series of products: CW3H and CW6H to meet the challenges in on-board OBC applications and meet the needs of different markets.

03 Solve old pain points and meet new needs, YMIN is always on the road

Compared with traditional capacitors, YMIN snap-in aluminum electrolytic capacitors have higher voltage resistance and can operate in high temperature, high pressure and high frequency environments, improve system reliability, and reduce the risk of failures such as breakdown and burning; lower ESR can provide greater current and smoother ripple output for on-board OBC; lower temperature rise, through the special structural design of Yongming capacitors and active heat dissipation system, can effectively reduce the internal temperature of the product, and can work stably under extremely complex working conditions.

YMIN snap-in aluminum electrolytic appliances not only have high energy density and special structure and material design, but also have a longer service life, allowing users to use the charger for a longer time. In addition, the product has been strictly tested and certified, its life and reliability are guaranteed, and it has shown excellent product advantages in the client’s actual machine test, and its safety performance is also better. It is very suitable for use in new energy vehicle chargers and other fields.

With the continuous expansion of the new energy vehicle market, the on-board charger technology is also constantly upgrading and improving. As an innovative product, YMIN snap in aluminum electrolytic capacitors have played an important role in improving the technical level of on-board chargers. We believe that with the continuous advancement and maturity of various on-board OBC technologies, the close cooperation of high-matching, high-reliability, and long-life high-voltage liquid horn capacitors, the charging efficiency of on-board chargers will become higher and higher, and the charging speed will become faster and faster!

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