Home is precious to everyone. It can shade you in the hot summer. It can send you warmth in the cold winter. When you stay home, you feel full of security.

The power battery is in need of such a "home" who knows how to deal with it. As we all know, the temperature will affect the battery's working condition, which will also affect the safety and performance of new energy vehicles. As a result, Zhengzhou Feipeng Electromechanical Co., Ltd. based on market demand, driven by technological innovation, launched the battery thermostat system (FOC vector control) at the Tianjin Bus Exhibition held on March 30, 2017, creating a constant temperature for the power battery. s home".

Temperature becomes the bottleneck for the development of new energy vehicles

In the past two years, under the impetus of multiple factors such as the pressures of governance and new energy subsidy policies, the new energy automobile market has seen explosive growth. Many cities’ public transport systems have responded positively to the national call and introduced a large number of pure electric buses. However, in the hot southern regions in summer and the cold northern regions in winter, the actual use of some new energy vehicles is not satisfactory due to external temperature. It can be seen that temperature has become the major bottleneck restricting the popularity of new energy vehicles.

As we all know, temperature is one of the important parameters for control in a pure electric vehicle power system, and it is also the most important factor affecting battery performance. When the temperature is high, the inconsistency of the battery cell voltage and other status will be prominent, and the stored power will be lost in the process of high and low pressure battery balance, which will shorten the driving range of the vehicle; if the cooling effect is not good Continuous work can easily cause the local temperature of the battery to be too high, causing potential safety hazards. When the temperature is low, the mileage and economic efficiency of new energy vehicles will also be significantly reduced, the driving range will drop by 30% at -18 degrees Celsius; and at -20 degrees Celsius, the battery lye will reach the freezing point, the power battery charging The speed will also be greatly reduced, affecting the attendance of the vehicle.

These problems have been verified on many of the purely electric bus lines surveyed by reporters in the past. Many drivers report to reporters: “The vehicle is prone to high-temperature alarms during the hot summer months. In winter, the batteries not only charge at a slower rate, but also have a large impact on the ability to store electricity. According to experts in the battery industry, this is due to temperature vs. discharge performance. The effect directly reflects on the discharge capacity and discharge voltage. The temperature decreases, the internal resistance of the battery increases, the electrochemical reaction speed slows down, the internal resistance of the polarization increases rapidly, the discharge capacity of the battery and the discharge platform decrease, and the output of the battery power and energy is affected.

FOC creates a constant temperature "home" for batteries

It is based on the huge market demand, Zhengzhou Fei Peng jointly with the Australian Curtin University of the University of the United States developed a battery thermostat system, to solve the new energy vehicles in the use of the battery operating temperature instability encountered in the process.

The thermostatic system of Zhengzhou Feipeng battery is mainly composed of four parts: water cooling unit, heating system, automatic control system and circulation line. When the battery compartment temperature is high, the refrigeration unit starts to work, the refrigerant absorbs heat from the liquid state to the gaseous state, and then the heat is dissipated in the radiator, similar to the thermal cycle system of the conventional engine; when the battery compartment temperature is low, The heating system starts to work, using the coolant as a heat source, and the heat source in the compressor is introduced into the heat exchange through the four-way valve, and then introduced into the battery fluid plate to heat the battery to a suitable temperature.

What needs to be emphasized is that FOC uses Zhengzhou Feipeng and Australia to jointly develop intelligent DC inverter technology, which can not only keep the temperature accuracy constant between 35~45 degrees Celsius, but also have a number of remote monitoring, automatic reply and self-test, etc. Features. In addition, the FOC's compact size does not occupy too much space and it matches the compatibility of different brands of new energy vehicles. At the same time, the FOC system can operate normally under rough roads and high vibration conditions.

Zhengzhou Feipeng Zhizuo guardian of new energy vehicles

For the first time, the reporter knew that Zhengzhou Feipeng started from the previous product, the Fire Warning and Control System (IFC). It can accurately detect Mars or flames in 50 milliseconds, and quickly perform fire extinguishing and cooling. It only takes 3.6 seconds. Extinguish the open flame. At that time, its sensitivity of detection, detection of blindness and fire-fighting efficiency left a very deep impression on every audience.

Today, Zhengzhou Feipeng has brought in FOC, creating a comfortable working environment for power batteries. At this year's Tianjin Bus Show, it attracted the attention of all participants. Whether it is IFC or FOC, before and after the two products are aimed at the field of new energy vehicles, indicating the determination of Zhengzhou Fei Peng Zhizuo as a guardian of new energy vehicles.

Ye Yuting, general manager of Zhengzhou Feipeng Electromechanical Co., Ltd., told reporters: "China's new energy automotive industry has made great progress in terms of technology and output, but it still cannot be denied that compared with traditional power cars, new energy vehicles It still belongs to new things and requires the industry to give more attention and support.Zhengzhou Feipeng is a solution provider that focuses on the research and development of vehicle components for commercial vehicles for 30 years, and component suppliers for the development of energy protection and environmental protection in the new energy industry. We hope to help the new energy automotive industry to ensure safety through technological innovation."