Introduction of Liquid cooled supercharging pile
Electric vehicles, as an important component of future modes of transportation, have received increasing attention. With the increasing application of new energy pure electric vehicles, the slow and difficult charging of new energy vehicles has always been a focus of attention in the industry. Liquid cooled supercharging technology, as a new technology to solve the problem of slow and difficult charging of new energy vehicles, has become the focus of industry competition. Liquid cooled supercharging, also known as liquid cooled ultra-high power charging technology, is an efficient charging technology achieved through liquid cooling. The principle is to remove the heat generated during charging through liquid circulation, thereby achieving fast and stable charging.
At present, high-power fast charging is mainly improved in two aspects. On the one hand, the voltage of the vehicle battery is increased. The voltage of pure electric new energy vehicles has moved from the original 400V to 800V and 1000V. On the other hand, it is to increase the charging current. Previously, the charging current was mostly 160A, but now it has been increased to 250A, and even overcharged to 600A. Charging acceleration is mainly achieved by increasing the charging current under the condition of vehicle battery voltage. However, as the charging current increases, the heat generated by the terminals and cables will rapidly increase, leading to a rapid rise in temperature. Prolonged high temperatures can cause certain damage, and in severe cases, it can also lead to safety accidents such as burning.
The principle of fully liquid cooled supercharging is to set up a dedicated liquid circulation channel between the cable and the charging gun. The channel is filled with liquid coolant used for heat dissipation, which is then circulated by a power pump to remove the heat generated during the charging process. The power part of the charging host also adopts liquid cooling , with no air exchange with the external environment, so it can achieve an IP65 design.
At the same time, the system uses a high air volume fan for low heat dissipation noise and high environmental friendliness. By driving the liquid circulation through the water pump in the liquid cooling circulation system, the electrical equipment inside the charging pile and charging gun is cooled, reducing the temperature and ensuring the stability and lifespan of the equipment. The liquid cooling system extends from the charging station to the charging cable and connector, achieving low-temperature operation of the entire charging system. This enhances the heat dissipation performance, improves the power density and output power of the equipment, and has a significant improvement compared to traditional air-cooled technology.
Fully liquid cooled supercharging has the advantages of faster charging, high equipment reliability, long service life, low charging noise, and low lifecycle cost. It accelerates the construction and expansion of charging facilities, promotes more users to choose to purchase electric vehicles, and promotes the popularization of the electric vehicle market. However, the initial investment cost of fully liquid cooled supercharging piles is higher, and system maintenance may be more complex. The liquid cooled supercharging system requires regular inspections, and the reliability requirements are higher compared to air-cooled solutions.
Overall, liquid cooled supercharging is a technological trend that not only improves charging efficiency and safety, but also adapts to various vehicle models and environments, providing fast, stable, and safe charging services for new energy vehicles. It has important significance and impact on solving the problem of long-distance running range of electric vehicles, and also brings new opportunities and momentum for the development and popularization of new energy vehicles, with broad market prospects and development space. We believe that liquid cooled supercharging will better support the development of China's electric vehicle industry, further promote orderly charging and V2G, assist in energy conservation, emission reduction, low-carbon and green development, and accelerate the achievement of the "dual carbon" strategic goals.
