How can new energy vehicles withstand the "grilling" test in hot weather? One system takes care of everything →

2023-07-10

The recent high temperature weather has had a significant impact on various industries and people's lives. Let's first focus on the safety of new energy vehicles. Many owners of Alternative fuel vehicle will be concerned about whether their vehicles, especially the power batteries, are safe in such hot weather? The reporter came to a new energy vehicle factory to explore the truth. The high temperature heatstroke tests the safety of power batteries of Alternative fuel vehicle In this new energy vehicle factory, experts in charge of battery research and development told reporters that high temperature weather will increase the risk of overheating batteries. Overheating the battery may lead to a decrease in battery performance, capacity, and lifespan, and extreme high temperatures may also cause battery damage or even fire. Li Jin, Director of Battery R&D Department at GAC Aian R&D Center: Currently, the maximum operating temperature of mainstream batteries is generally below 60 ℃, so vehicles are required to provide strong thermal management capabilities. In Turpan, Xinjiang, this new energy vehicle company conducted vehicle testing at a high surface temperature of 70 ℃, including continuous driving at high temperatures and charging at high temperatures. Testers: The battery temperature starts charging at 38.5 degrees Celsius, and then gradually rises to 40 degrees Celsius. With strong thermal management capabilities, the battery temperature finally drops to 37.5 degrees Celsius. Testers introduced that most of China's new energy vehicles have thermal management systems for batteries, which means that when the temperature rises to a certain value, the battery cells will automatically cool down through a liquid cooling system inside the battery, preventing the temperature of the power battery cells from exceeding the critical value. In view of the recent high temperature and hot weather in many places in China, experts suggest that new energy owners should not charge without permission. At the same time, it is necessary to avoid using devices that may affect electrical safety during charging, including avoiding overcharging and frequent charging. Hebei: High temperature "ultra long standby" measures are taken to ensure production capacity. High temperature weather poses difficulties for industrial production enterprises. In Hebei, there have been 5 provincial-wide high-temperature processes since the beginning of this year, and multiple measures have been taken to ensure that enterprises are producing at full capacity. This enterprise in Cheng'an County, Handan, Hebei Province, whose products are mainly used in new energy battery production lines, is a leader in the industry, and orders are always in short supply. Recently, due to the impact of high temperature weather, the electricity load of enterprises has increased, and the existing power system cannot meet the full load operation of enterprises. The local power department immediately coordinated with the enterprise to implement the "cooling and capacity expansion" action, achieving expansion and upgrading while ensuring the normal production and electricity consumption of the enterprise, and ensuring that the enterprise's production does not stop. Li Erhu, equipment director of Shengjiahe Roll Manufacturing Co., Ltd. in Cheng'an County, Handan, Hebei: After the power expansion and upgrading, our enterprise will be able to produce at full power, and the orders will certainly be completed in advance. The production capacity is expected to increase by more than 20%. In another "Little Giant" enterprise that specializes in producing rail transit equipment, all five workshops are operating at full capacity. In order not to affect order delivery, the enterprise continuously adjusts process nodes and conducts staggered production without reducing work tasks. On the premise of ensuring the health of employees, meeting market order demands and ensuring a steady increase in product output. (New News Agency)

Edit:XiaoWanNing    Responsible editor:YingLing

Source:CCTV NEWS

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