Semco University - Semco university - All about the Lithium-Ion Batteries

The seven charging methods of the electric car that hurt the most in the heat

Leave a Comment / Electric Vehicles / By Semco University

It is especially necessary to pay attention to the heat of charging electric vehicles, improper charging will cause damage to the electric vehicle battery, easy to charge the battery and reduce the service life of the battery. According to battery experts, the following seven charging methods are the most harmful to the battery, and need …

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BMS internal and external “wake-up” signal

Leave a Comment / Electric Vehicles / By Semco University

Part 1: Electric door switches for cars What do Lock, On, and Start mean on the electric door switch of the car, and where does it control? The above picture actually contains 4 power modes, called LOCK, ACC, ON, and START, which are written for car owners and users, in fact, in the automotive electronics industry, they …

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Lightweight technology for battery pack housing

Leave a Comment / Cell Manufacturing / By Semco University

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 …

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Liquid leakage analysis of soft-pack lithium-ion battery

1 Comment / General / By Semco University

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. …

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What are the Functions of the battery pack?

Leave a Comment / General / By Semco University

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 …

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Failure analysis of lithium batteries is a science, and it is not easy to understand:

Leave a Comment / General / By Semco University

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 …

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Overview of Lithium Batteries

Leave a Comment / General / By Semco University

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, …

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Basic knowledge and manufacturing process of lithium-ion batteries

Leave a Comment / Safety Standard / By Semco University

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 …

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The packaging form of lithium-ion battery is better?

Leave a Comment / Safety Standard / By Semco University

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 …

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Causes & Reconditioning of Battery Vulcanization

1 Comment / Safety Standard / By Semco University

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 …

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