Introduction The power battery system is the core driving force of electric vehicles. It consists of a battery module, electrical system, thermal management system, battery management system, housing and other parts. The main function of the shell is to load and protect the battery module, which needs to meet mechanical requirements such as strength, stiffness …
Introduction Efficient and reliable energy storage systems are crucial for our modern society. Lithium-ion batteries (LIBs) with excellent performance are widely used in portable electronics and electric vehicles (EVs), but frequent fires and explosions limit their further and more widespread applications. This review summarizes aspects of LIB safety and discusses the related issues, strategies, and testing standards. …
Liquid leakage analysis of soft-pack lithium-ion battery Read More »
The figure below shows the electrical connection topology of the whole vehicle. The part we care about is the part of the blue dotted line in the figure below. Introduction The battery pack high voltage system is designed to control power flow to and from the cells and to maintain the power level within the …
Introduction to failure analysis of lithium batteries The national standard GB3187-82 defines: “Failure (failure) – the product loses its specified function. For repairable products, it is usually called a failure.” The failure of lithium batteries refers to the deterioration of battery performance due to some specific essential reasons. Or use performance exceptions. The failures of …
Failure analysis of lithium batteries is a science, and it is not easy to understand: Read More »
A lithium-ion (Li-ion) battery is a type of rechargeable battery technology that is found throughout portable electronics and electric vehicles. It is also growing in popularity for military and aerospace applications. This kind of battery uses lithium ions as a key component of its electrochemistry, hence its name.For starters, a battery consists of an anode, …
Introduction The production process of lithium-ion batteries is divided into four main processes: pole piece production, battery cell (cell) production, cell activation detection, and battery packaging. The production of pole pieces includes the processes of pulping, coating, rolling, slitting, sheet making, and tab forming. It is the basis of lithium-ion battery manufacturing and has high …
Basic knowledge and manufacturing process of lithium-ion batteries Read More »
Introduction Depending on the different package forms, batteries are divided into cylindrical batteries, square batteries, and soft package batteries. Different structures also mean that they have different characteristics. In this article, we will discuss the advantages and disadvantages of the batteries of these three structures. Cylindrical battery: Long-term development and the most mature technology. Advantages …
The packaging form of lithium-ion battery is better? Read More »
Introduction The electric car often has fault two: motor spinning when stopped1 The battery voltage in the state of under-voltage critical will appear when turning and stopping.2 Poor contacts with the battery connector will also occur in this fault.3 The speed control turns the line to break the state and the brake power off switch is faulty. Battery vulcanization …
Causes & Reconditioning of Battery Vulcanization Read More »
Introduction Lithium-ion batteries consisting of LiCoO2 and graphite are popular worldwide as power sources for mobile phones, laptop computers, and other electronic devices. Graphite and LiCoO2 are called lithium insertion materials. In other words, the lithium-ion battery consists of two lithium insertion materials. The combination of two lithium insertion materials is essential for the basic functionality of the …
Introduction Overcharge is one of the difficult to pass in the current lithium battery safety test, so it is necessary to understand the overcharge mechanism and the current measures to prevent overcharge. Figure 1 shows the voltage and temperature curve of the NCM+LMO/Gr system battery when it is overcharged. The maximum voltage is reached at …
Lithium battery overcharge mechanism and anti-overcharge measures. Read More »
