电动汽车电池从电池到模块再到电池组的测试

Though the power source in a hybrid or electric vehicle is commonly referred to simply as “a battery,” this piece of technology actually comprises dozens or even hundreds of individual battery cells. 安全有效地运作, the individual battery cells are arranged into units called battery 模块, and multiple battery 模块 are assembled into an even larger unit called a battery 包.

什么是电池单元?

A battery cell is the most basic unit of a lithium-ion battery, 由阴极组成, 阳极, 分隔符, 还有盒子里的电解质. A battery cell by itself is typically between one and six volts and functions by converting chemical energy into electricity.

什么是电池模块?

A battery 模块 is an arrangement of multiple battery cells. It consists of many cells mounted into a frame that links them together, holds them in place and helps to protect them from external stressors like shock and vibration. As there is no standard number of cells required for a battery 模块, manufacturers design 模块 with different numbers of cells depending on the cells’ performance and the requirements of the final product design.

什么是电池组?

电池包由多个电池模块组成, 机械包装, and several additional pieces of technology meant to support and control battery function, 比如冷却系统和电池管理系统. 大小, 形状, and overall design of an EV battery 包 is heavily influenced by the general design of the vehicle.

测试电池vs. 模块和包

Battery cells, 模块, 和包 each require unique types of battery testing. 因为电池通过化学反应起作用, cell-level tests measure electrochemical performance in varying conditions. 压力, 骑自行车, and environmental tests investigate the cells’ overall output and efficiency in addition to the safety of internal chemical reactions. 测试序列可以包括电流测量, 电压, 电阻, 稳定, and the rates of chemical reactions at different temperatures or in different environments. Battery cell testing occurs early in the overall design and manufacturing process of a battery-powered device.

The chemical functionality of battery cells is tested and verified before they are used in a 包 application, so battery 包 testing focuses on the engineering of the system overall. 测试方案可能包括耐久性测试, 特定用例中的性能, 特定于应用程序的安全, 失败的风险, 以及系统级交互.

Modules 和包 must undergo sub-system and system validation to verify that their engineering is sound and will meet all design specifications. 通过这个测试阶段, the battery itself may be a secondary focus as the majority of tests will focus on the integrity of surrounding components.

全面测试混合动力和电动汽车电池设计

在设计电动汽车的时候, it is never enough to know how an individual cell or 模块 will perform independently. The manufacturer must know how the planned configuration of multiple cells and multiple 包s together in a vehicle will impact performance, 长寿, 以及车辆安全运行的能力. 电动汽车也是一项相对较新的技术, 与内燃机相比, and manufacturers still frequently encounter new questions and new variables related to battery performance because of this novelty.

有效地处理尽可能多的变量, battery assemblies must go through thorough testing at the cell, 模块, 包, 以及整个车辆装配阶段. It is crucial that manufacturers include battery testing in the early phases of research and development to ensure the vehicle’s design and its expected performance are compatible with the proposed configuration of cells, 模块, 和包. Precisely how these components are assembled can impact factors including the battery’s performance, 热量分布, 以及对环境条件的脆弱性.

专门的电池测试参数

im体育APP has reinforced our commitment to the future of automotive testing with several recent expansions and acquisitions.  Our acquisitions of 能源 Assurance and Trialon have enhanced our battery testing capabilities, and our Detroit automotive lab is in the process of expanding its footprint to 60,000平方英尺. With a decades-long history of providing testing and consultancy services to major automotive manufacturers, im体育APP is the ideal partner to support you from research and development all the way through to full vehicle testing.

Our facilities are equipped to handle almost any type of battery test requirement, 包括自定义测试参数, with the capacity to run multiple large and complex programs simultaneously. im体育APP has the expertise to test even the most complex EV battery assemblies under real-world conditions, design custom testing standards for new product designs and provide expert guidance on unique testing procedures. 欲了解更多信息，请访问我们的 混合动力和电动汽车电池测试页面 or im体育APP 直接.