How to choose a super charging pile cooling pump?

With the implementation of China's green development concept and the deployment of new energy strategies, the number of new energy electric vehicles continues to rise, and the corresponding electric vehicle charging and swapping facilities have also begun to grow significantly.

As a new trend to promote green travel, the development of supercharging station systems for new energy electric vehicles has gradually become a major technical challenge in the development process.

The biggest advantage of supercharging stations over household power sources is that they can provide sufficient electrical energy to new energy vehicles in a short period of time, reducing the charging time from several hours to over ten hours to a few minutes to over ten minutes.

The significant reduction in charging time will also greatly facilitate people's travel and better meet their travel needs.

The 'fast charging' principle of supercharging stations is to increase the instantaneous power to achieve an increase in the transmission current and significantly shorten the charging time while keeping the rated voltage constant. But at the same time as the current increases, it will also lead to an increase in the heat generation of the system equipment. These high-density heat sources will accelerate the aging of charging station equipment. If not dissipated in time, overheated supercharging stations can also cause serious safety accidents.

The quickest way to solve the problem of heat generation is to thicken the connecting cable to reduce heat generation, but this also means that as the weight of the charging cable increases, the weight of the charging cable will become a major problem for people during self charging.

The cooling methods that can be applied to the charging system can be divided into three forms: natural cooling, forced air cooling, and liquid cooling.

Natural cooling: that is, reducing the temperature of equipment through natural air circulation without special equipment. This method is the most cost-effective but also the least efficient.

Forced air cooling: that is, installing a fan radiator inside the equipment, using air as an exchange medium, and using forced convection to dissipate heat. The forced air cooling method can bring a large amount of heat, but it also takes up a lot of space, and during the air cooling process, it may also bring new problems such as dust, moisture, and corrosive gases.

Liquid cooling: A layer of heat dissipating tape is wrapped around the charging cable, and the cooling liquid is circulated and transported into the heat dissipating tape through the operation of a pump. The liquid cooling method can circulate the coolant, and the enclosed heat dissipation environment can ensure both heat dissipation efficiency and cleanliness during the heat dissipation process.

Supercharging stations belong to working environments with small heat dissipation space and extremely high heat density. Liquid cooling technology can be applied in environments where forced convection and phase change systems cannot achieve heat dissipation effects, or where thermal energy density is extremely high.

Therefore, using liquid cooling technology is the most efficient, space saving, and system weight reducing heat dissipation method.

So, how to choose the 'heart' of the liquid cooling process - the super charging pile liquid cooling pump?

To choose a suitable liquid cooled pump for a supercharging station, it is necessary to first understand the applicable requirements of the supercharging station system operating conditions. Supercharging stations are usually installed in residential areas, commercial districts, workplaces, and parking lots with high pedestrian traffic or transportation needs, where people have frequent daily activities. Therefore, when choosing a liquid cooled pump for supercharging stations, one should choose a micro pump with low noise, small volume, no leakage, high reliability, low flow rate, high pressure, and long service life.

There are also many micro pumps that meet these requirements. How can we determine which type of micro pump meets the requirements?

Firstly, we need to determine the performance parameters of the liquid cooled pump for the supercharging station. The supercharging station needs to be installed in residential and commercial areas, and the overall noise level and footprint of the equipment need to be strictly controlled.

According to the design standards, the noise level of the coolant delivery pump should be below 60dB, and it should be compact in size. Currently, in systems using ethylene glycol or silicone oil as the cooling medium, the flow design range is generally 2-5 liters/minute, and the delivery pressure is within 6Bar.

Based on these parameter requirements, we can narrow down the selection range between gear pumps and rotary vane pumps.

As a type of positive displacement pump, the Suofu NP series miniature magnetic gear pump can still have good boosting effect in gas-liquid two-phase state, with small volume, light weight, good reliability, low wear rate, long service life, no leakage in static seal, and long-term dry operation ability and self-priming ability. It has low noise and can transport a wide range of medium viscosity. But in terms of price, the parts of the gear pump are all precision machined, so the price will be higher than that of the rotary vane pump.

Rotary vane pump is also a type of positive displacement pump, which has the characteristics of compact structure, high efficiency, strong self suction, suitable for conveying light oil and viscous oil, low noise, and low price. However, during the use of the rotary vane, it wears out severely and produces a large number of small wear particles that cause blockage, which will have a certain impact on the performance of the pump and the heat transfer efficiency of the system.

Overall, excluding price factors, gear pumps are more suitable as coolant delivery pumps for supercharging stations than rotary vane pumps in terms of performance.

When choosing a suitable gear pump as a liquid cooling pump for supercharging stations, we should not only consider the price, but also comprehensively consider the pump's technology, performance, and after-sales service.

Technology determines quality, therefore, technology and quality are the core competitiveness of a brand. When it is difficult to choose a liquid cooled pump for a supercharging station, a brand with strong technical strength can be chosen.

Choosing a brand can also be comprehensively considered from three aspects: the project experience, research and development capabilities, and technical team of the super charging pile liquid cooling pump manufacturer.

From project experience, it is possible to find a suitable liquid cooled pump for supercharging piles by comparing the performance characteristics of existing system equipment promoted by major research institutes and well-known enterprises on the market.

The SuFu NP series super charging pile liquid cooled pump is a designated supplier for seven institutes of the Chinese Academy of Sciences, major universities and well-known enterprises at home and abroad. Its products are also used in applications with high stability requirements, such as chips, deep-sea robots, maglev compressors, lithium batteries, fuel cells, offshore wind power generation systems, CR.

As a mature product with sufficient market application cases, the NP series supercharging pile liquid cooled pump can save a lot of time in comparative testing.

Based on the industry application performance and technical requirements of high-power charging piles, Sofu has specially developed and customized NP190 with 24V150W DC brushless motor super charging pile liquid cooled pump for the new energy charging pile industry. It has been widely used in the new energy charging pile market for more than 2 years and has been recognized by many well-known enterprises.

When developing high-power charging piles and selecting super charging pile liquid cooled pumps, due to a lack of understanding of the pump, it is also necessary to have preliminary communication with the manufacturer regarding technical requirements. Manufacturers with independent technical development capabilities can provide detailed improvement and improvement suggestions for system issues through technical exchanges before procurement.

Similarly, manufacturers of super charging pile liquid cooled pump products that have been widely used in the market can also provide solutions to some technical problems commonly encountered in high-power charging pile systems based on various data and experience.

In terms of selecting product technical performance, consideration can also be given to the manufacturer's independent research and development capabilities.

A liquid cooling pump manufacturer with independent technological development capabilities, with patented technology and technical teams, can customize liquid cooling pumps according to customer system requirements when standard products do not fully meet customer design standards.

Shanghai Suofu has 27 patented technologies (3 invention patents, 17 utility model patents, and 7 design patents), including manufacturing methods for cooling pumps, key component line design, special material application, overall appearance design, etc. The technical team can develop and customize products according to customer needs, and provide technical support for selection before sales. In terms of after-sales service, they can also provide good repair and maintenance conditions.

The most important factor in the selection process is to determine whether the performance of the charging pile cooling pump meets the usage standards of the required equipment, such as flow rate, pressure, viscosity, temperature resistance, wear resistance, service life, etc., which are all important factors to consider in the selection process.

The NP190 magnetic gear pump equipped with a 24V 150W DC brushless motor has a service life of over 30000 hours. The working temperature of the environment is -45~60 ℃, the temperature of the conveyed liquid is -45~85 ℃, the flow rate is 1-5.5 liters/minute, and the outlet pressure is 0-7 Bar.

The motor protection level can provide IP55 and IP68 options. The motor can accept two speed control signals: 0-5V voltage signal and PWM signal. It can be controlled in both forward and reverse directions and has multiple protection modes such as 150W limited power operation protection mode, 125 ℃ controller over temperature protection, and locked rotor protection mode.

In addition, the interface position of the NP190 super charged liquid cold water pump body can be customized into various forms such as side inlet and outlet, upper inlet and lower outlet according to the system layout requirements.

The pump body material of the NP series high-power charging pile liquid cooled pump is 316L, and the core components of the pump, gears and bearings, are made of high-performance PEEK engineering plastic filled with Wiggs WG series. The gear shaft is made of high-precision industrial zirconia ceramic. The product has unique advantages in hardness, high and low temperature resistance, wear resistance, corrosion resistance, and lifespan.

The delivery time, pre-sales technical consultation, and after-sales technical support of high-power charging pile cooling pump products are also important conditions for selecting a cooling pump. The technical team and production factory of the Suofu NP series high-power charging pile liquid cooled cooling pump are both located in China. They can provide customers with detailed system configuration and control matching consultation before sales, as well as timely delivery and convenient after-sales support. From pre-sales customized matching to connection and installation, to maintenance and repair, there are professional personnel providing tracking services.

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