How to ensure safety of new energy vehicle power batteries in hot weather? Come to the factory to explore the weather | batteries | cars
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 new energy vehicles are concerned about whether their vehicles, especially their power batteries, are safe in such hot weather? The reporter came to a new energy vehicle factory to explore the truth.
High temperature and scorching heat test the safety of new energy vehicle power batteries
At this new energy vehicle factory, experts in charge of battery research and development told reporters that high temperature weather increases the risk of battery overheating. Overheating the battery can lead to a decrease in battery performance, capacity, and lifespan. Extreme high temperatures can also cause battery damage or even fire.
Li Jin, Director of Battery R&D Department at GAC Aion 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 a thermal management system for batteries. In other words, when the temperature rises to a certain value, the battery cells will be automatically cooled by a liquid cooling system inside the battery, which will not allow the temperature of the power battery cells to exceed the critical value.
In response to the recent high temperature and scorching weather in many parts of China, experts advise new energy vehicle owners not to charge without authorization. At the same time, it is necessary to avoid charging devices that may affect electrical safety, including avoiding overcharging and frequent charging.
Hebei: Multiple Measures for High Temperature "Ultra Long standby" and Ensuring Production Capacity
The hot weather has put industrial production enterprises in a difficult situation. In Hebei Province, there have been 5 provincial high temperature processes since the beginning of this year, and multiple measures have been taken to ensure that enterprises can produce at full capacity.
This enterprise in Cheng'an County, Handan, Hebei Province, mainly produces products for new energy battery production lines, and is in a leading position in the industry. Orders have always been 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 connects with enterprises to implement the "cooling and capacity expansion" action, while ensuring the normal production and electricity consumption of enterprises, to achieve expansion and upgrading, and ensure that enterprise production does not stop.
Li Erhu, Equipment Supervisor of Shengjiahe Roll Manufacturing Co., Ltd. in Cheng'an County, Handan, Hebei Province: After the power expansion and upgrading, our company can start production at full capacity, and the orders will definitely be completed ahead of schedule. The production capacity is expected to increase by more than 20%.
In another specialized and innovative "little giant" enterprise that produces rail transit equipment, all five workshops are operating at full capacity. In order not to affect order delivery, the enterprise continuously adjusts the process nodes and conducts staggered production without reducing the workload. On the premise of ensuring the health of employees, meeting market order demands and ensuring a steady increase in product output.
