通过对比学习对电池退化的诊断预测
James Sadler1, Rizwaan Mohammed2, Michael Castle2
1Envision Energy, London, United Kingdom. james.sadler@envision-energy.com.
Scientific reports
|September 29, 2025
概括
这项研究介绍了ACCEPT,这是预测离子电池降解的新模型. 它结合了物理和数据驱动的洞察力,在各种电池类型和条件中提供更准确的预测.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 数据科学数据科学数据科学
背景情况:
- 精确的离子电池 (LIB) 降解建模对于电动汽车 (EV) 和电池储能系统 (BESS) 至关重要.
- 目前的数据驱动方法在概括和预测加速退化方面扎,而物理模型面临参数不确定性.
- 现有的方法无法完全阐明降解机制.
研究的目的:
- 开发一种新的电池退化模型,克服现有的数据驱动和物理方法的局限性.
- 提高LIB退化预测的准确性和概括能力.
- 为可靠的电池性能预测提供基础模型.
主要方法:
- 提出了一个新的框架,ACCEPT,利用对比学习.
- 物理降解参数与可观测的操作量之间的映射关系.
- 整合了类别特征,以获得更广泛的适用性.
主要成果:
- ACCEPT模型表现出更好的概括性和准确性,特别是在关键退化场景中.
- 在相似的LIB化学中实现了非微不足道的转移学习,用于在相似的LIB化学中进行零射击推断.
- 通过包括分类特征,展示了对不同LIB化学的概括性.
结论:
- ACCEPT提供了一条通往基础电池退化模型的途径.
- 该模型为各种电池类型和操作条件提供可靠的预测.
- 这种方法提高了电动汽车和BESS中的LIB的安全性和可靠性.
相关概念视频
Batteries and Fuel Cells
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
Electrogravimetric Analysis: Overview
Electrogravimetric analysis measures the weight of an analyte deposited electrolytically onto a suitable working electrode. This method involves applying a potential to a pre-weighed electrode submerged in a solution, which results in the desired substance being deposited through reduction at the cathode or oxidation at the anode. The electrode's weight is recorded after deposition, and the difference in weight gives the analyte's weight in the solution.
To test the completeness of the...
To test the completeness of the...
Controlled-Potential Coulometry: Electrolytic Methods
Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential ensures...
The chosen potential ensures...
Voltammetry: Factors Affecting Measurements
A current produced due to the redox reactions of the analyte at the working and auxiliary electrodes is called a faradaic current. The reaction can be divided into two types. The current generated due to the reduction of the analyte is called cathodic current, and it carries a positive charge. In contrast, the current produced by analyte oxidation is known as an anodic current, and it has a negative charge. The applied potential at the working electrode determines the faradaic current flow, and...
Electrochemical Cells
Electrochemical cells are systems that convert chemical energy into electrical energy or use electrical energy to drive chemical reactions. They consist of two electrodes in contact with an electrolyte, where redox reactions enable electron transfer. Most electrochemical cells include two half-cells connected by an external wire for electron flow and a salt bridge for ion flow. The salt bridge contains an electrolyte solution and maintains charge neutrality by allowing ions—not electrons—to...
Types of Reversible Electrodes
For electrode reversibility to be maintained, all the reactants and products involved in the half-reaction must be present at the electrode. There are several types of reversible electrodes (half-cells).In metal-metal-ion electrodes, a metal balances electrochemically with a solution of its own ions. Examples are Cu2+|Cu and Zn2+|Zn. Metals that react with the solvent, like group 1 and most group 2 metals, which react with water, and zinc, which reacts with aqueous acidic solutions, cannot be...

