电动汽车电池的安全测试

9月 12, 2019

Why researching Electric Vehicles batteries has never been safer

电池测试设备的进步使电池测试的过程更加安全。随着更多 precise and accurate testing equipment因此，电池中最微小的变化都能在成为关键问题之前被检测出来。改进后的设备还可以提供一个更稳定和可控的测试环境，使得研究和开发过程更为有效。

电动汽车电池的安全问题

虽然电动汽车（EV）已经在路上行驶了一段时间，但有关电池稳定性和安全性的问题仍然层出不穷。电动汽车电池的几个主要关键问题是易燃性、气体和电池单元的创伤。

与任何使用锂离子电池的设备一样，电动汽车电池的易燃性也是一个巨大的问题。电动汽车曾发生过热失控事件，造成灾难性故障。电池起火需要特殊设备才能扑灭，而且如果不小心，即使火被扑灭，电池也可能复燃。

在电池中发现的常见电解质是碳酸盐和一种溶解盐的混合物。在热失控的情况下，分解的电解质会导致电池内形成气体，增加电池内的压力，导致有毒气体的释放。

Trauma and impact to the battery pack can also greatly affect its capabilities and compromise its stability and safety. EVs have been reported to spontaneously combust days after being in an accident, showing how the risks are real if batteries are not properly monitored. This is equally true during testing; even in a lab environment.

Arbin 的设备如何设计用于测试电动汽车电池

Arbin 的设备可使用动态循环对电池进行测试。传统电池主要采用恒定电流充放电曲线进行测试。另一方面，电动汽车电池需要根据汽车的动作进行动态充放电。

Arbin 的系统可轻松实现电池的动态循环。使用方法阿尔宾软件, standardized test profiles, such as USACB’s FUDS profile can be easily uploaded into the testing system, allowing batteries to be safely and efficiently tested according to regional, national, and international standards just by uploading a text file of time-vs-power or time-vs-current data to simulate the drive cycle. High quality and precise testing equipment detect the slightest change in the battery, allowing researchers to detect any issues early on in the testing process and know better what materials and situations affect battery health and life. Researchers can catch these changes and make appropriate adjustments to the battery before it becomes a critical issue. It also allows manufacturers to create comprehensive safety guidelines for use of the battery. Battery test equipment from other manufacturers has been shown to significantly average the output of a dynamic drive profile and fails to accurately reproduce the real-world requirements.

联系我们

还可以通过以下方式让电动汽车电池组的电池管理系统 (BMS) 完全控制 Arbin 测试仪的充放电过程 CANBus协议.这个软件并不像其他品牌的测试设备那样局限于截止限制或安全条件，还可以作为动态控制值。

温度稳定性也是测试电动车电池的关键。如前所述，电池过热是一个严重的安全隐患。创造一个稳定的热环境来测试电池是安全测试的关键。在发生热失控或串联故障时，也必须控制任何问题，以免影响测试室中的其他电池。