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The meaning of battery pack is the welding and assembly of battery packs, which refers to the process of connecting individual battery cells in series or parallel through welding equipment for welding and fixing, and assembling them with battery protection plates, battery fixing brackets, and battery shells and other accessories, finally becoming a battery pack that can be directly connected to electrical equipment for use. What does lithium-ion battery PACK mean? What is a battery pack pack? What are the requirements for assembling PACK lithium-ion battery packs? Let's take a look below.

1、 What is a lithium-ion battery pack?

Battery PACK generally refers to combination batteries, and it mainly refers to the processing and assembly of lithium-ion battery packs. It is important to combine the battery cells, battery protection plates, battery connectors, label paper, etc. through the battery PACK process to produce the products that customers want. Battery PACK is currently mainly concentrated in lithium-ion battery pack PACK factories, which have their own PACK structure design, PACK electronic design, and PACK production workshops. They can independently develop and design according to customer needs. After confirming the customer's customized requirements for PACK lithium-ion batteries through battery methods, battery specifications, and battery samples, they can be produced and processed by the PACK production line in the PACK workshop. After quality inspection is qualified, they can be shipped.

2、 Understanding lithium-ion battery monomers, lithium-ion batteries, and lithium-ion battery packs

Lithium ion battery cell: The most basic element that makes up a battery pack and battery pack, and can generally supply a voltage between 3v and 4v;

Lithium ion battery packs: composed of multiple individual units, forming a single physical module that supplies higher voltage and capacity;

Lithium ion battery pack: usually composed of multiple battery packs, and also includes a battery management system (BMS), which is the final product supplied by the battery factory to users. That is what people often refer to as lithium-ion batteries.

3、 Battery PACK composition

PACK includes battery pack, busbar, flexible connection, protective board, outer packaging, output (including connectors), auxiliary materials such as barley paper, plastic bracket, etc., which together form a PACK.

5、 The characteristics of lithium-ion battery PACK

It has complete functions and can be directly applied; The diversity of types can be achieved through multiple PACKs for the same application requirement.

The lithium-ion battery pack requires the battery to have a high degree of consistency (capacity, internal resistance, voltage, discharge curve, lifespan).

The cycle life of lithium-ion battery pack PACK is lower than that of a single battery.

Used under limited conditions (including charging and discharging currents, charging methods, temperature and humidity conditions, vibration conditions, force levels, etc.)

The pack protection board for lithium-ion battery packs requires a charging balance function.

High voltage and high current battery packs (such as electric vehicle batteries and energy storage systems) require the installation of a Battery Management System (BMS), CAN, RS485, and other communication buses.

The lithium-ion battery pack has high requirements for chargers, and some requirements are communicated with BMS to ensure that each battery operates normally, fully utilizes the energy stored in the battery, and ensures safe and reliable use.

6、 Lithium ion battery PACK process flow

The PACK of lithium-ion batteries can be achieved through two methods: laser welding, ultrasonic welding, or pulse welding. This is a commonly used welding method, which has the advantage of good reliability but is not easy to replace. The second is through contact with elastic metal sheets, which has the advantage of no welding and easy battery replacement, but the disadvantage is that it may lead to poor contact.

Alright, the above is the basic knowledge explanation of lithium-ion battery pack PACK, hoping to be helpful to everyone. At the same time, it is necessary to make the following differences between BMS manufacturers, battery cell manufacturers, and battery pack manufacturers here:

1. BMS manufacturers refer to manufacturers who design and manufacture battery pack management systems, which are responsible for implementing the functions of battery protection boards and may not necessarily have the ability to produce or pack battery cells;

2. Cell manufacturers refer to manufacturers who can produce and manufacture individual battery cells, such as commonly seen cylindrical batteries, square aluminum shell batteries, and soft pack lithium-ion batteries that are the same as mobile phone batteries. These types of cells are collectively referred to as battery cells, but they may not necessarily have the ability to produce BMS or pack them;

3. Batterypack manufacturers are battery manufacturers who have the ability to assemble battery cells, BMS, battery mounting brackets, and battery casings into components that can be used directly. Similarly, they may not necessarily have the ability to produce or pack battery cells; Most battery manufacturers of this kind complete the finished product by customizing battery cells to battery cell manufacturers and assembling battery protection plates to BMS manufacturers, similar to manufacturers that process incoming materials.

Of course, there are also some battery manufacturers with strong capabilities. For example, as a lithium-ion battery manufacturer with strong comprehensive strength, batteries can provide customers with customized services that integrate battery cells, BMS, and structural design. From the requirements of battery cell properties for configuration and production, to the design and manufacturing of BMS suitable for application, then to the structural design of battery packs, and finally to the battery PACK, they are completely independently completed to ensure battery quality and ensure customers can use them with confidence.

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