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Choose Lithium Ion Battery Cylindrical Cells or Prismatic Cells? That's the dilemma!!!

2021-07-22
Most people have dilemma in choosing Lithium Ion Battery Cylindrical cell and Lithium ion battery Prismatic battery cell.Both of them are the most common options on the market for building Lithium Batteries. VTC Power Co.,Ltd manufacturers lifepo4 battery for 20 years and tell you the right choice. Before you purchase a battery for your application consider the following advantages and drawbacks of each type of cell.

Lifepo4 Battery Cylindrical Cells

Lifepo4 Battery Cylindrical cells are the most common cell type in use today. This design allows for better automation processes and techniques that increase consistency and lower cost.


Lifepo4 Battery Prismatic Cells

Lifepo4 Battery Prismatic cells have gained popularity because their large capacity and prismatic shape that make it easy to connect 4 cells together and create a 12V battery pack. 


Lifepo4 Battery Cylindrical Cell Advantages

Compared to prismatic cells, cylindrical cells can be produced much faster so more KWh per cell can be produced every day equaling lower $ per KWh. The electrodes in a cylindrical cell are wound tightly and encased in a metal casing, This minimizes electrode material from breaking up from the mechanical vibrations, thermal cycling from charging and discharging and mechanical expansion of the current conductors inside from thermal cycling. Many cells are combined in series and in parallel to increase voltage and capacity of the battery pack. If one cell goes bad, the impact on the entire pack is low. With prismatic cells if one cell goes bad it can compromise the whole battery pack. Cylindrical cells radiate heat and control temperature more easily than prismatic cells.Lifepo4 Battery Cylindrical Cell are more widely used in solar street light and portable device due to its customized size and configuration.

Lifepo4 Battery Prismatic Cell Advantage

Prismatic cells can reach much higher capacity,highest as 300Ah in the market.Furthermore,prismatic cells using bolt and busbar,which can support DIY quick and easier assemble for solar home energy storage,small EV and RV applicationn.Lifepo4 Battery Prismatic Cell can ensure the excellent performance of the total battery pack and reduce the risk of battery pack failure caused by single cell.Furthermore,the price of Lifepo4 battery prismatic cell keeps decreasing each year,which makes the market more popular to Lifepo4 battery prismatic cell.


Lifepo4 Battery Cell Safety Features and Design

Both the Lifepo4 Battery Cylindrical Cell and Lifepo4 Battery Prismatic Cell has explosion proof valve to prevent the explosion and ensure the safety of the battery.Right now,both the Lifepo4 Battery Cylindrical Cell and Lifepo4 Battery Prismatic Cell are produced by automatic production line,which ensure the excellent performance and cell consistance of the cells.The choose of the lifepo4 battery is totally depends on the product design,performance and safety.

Choose the best cell models suitable for your design in size and discharge rate.


THERMAL FUSE 

INTERNAL CELL SAFETY FUSE

Our latest cell technology has a built in thermal safety fuse between the anode and cathode that will break in the unlikely event the cell would begin to overheat.

SAFETY VENT 

HIGH PRESSURE SAFETY VENT

A high pressure safety vent will flip open to release energy and prevent explosion if exposed to extreme heat.

ELECTROLYTE

FLAME RETARDANT ELECTROLYTE

Our cells are manufactured with a flame retardant additive in the electrolyte making them safe.

EXPLOSION PROOF 

EXPLOSION PROOF STAINLESS STEEL

Every Lithium Battery cell is manufactured in an explosion proof stainless steel cylindrical case and automatic production line.

Cell Matching Process

1. Consistency of Self Discharge

2. Consistency of Voltage

3. Consistency of Inner Impedance

4. Consistency of Capacity

5. Consistency of Cycle Life

6. Consistency of Platform

7. Consistency of Constant Current Rate

8. Consistency of Cell Power Control

9. Consistency of Parallel Module Control

10. Consistency of Finished Battery Module.


 CELL BALANCING


BOLTED CELLS


CIRCUIT PROTECTION 

The BMS balances the cells by sending more current through the length way circuit boards and into cells with a lower voltage. The BMS will also discharging cells that exceed 3.65V during charging.

Most of our cells positive and negative terminals are bolted vs the more common tab welded method. This creates a better connection for higher amperage loads and better current conductivity.

The Circuit Boards have a unique function of over current and cross protection. The cells bolt through circuit board that provide balancing, even current flow, short circuit protection and add rigid strength to the battery pack.

If a cell over heats or if the battery is penetrated by a metal object the Circuit Board will disconnect the impacted cells allowing the rest of the battery to continue to function normally. 

VTC Power Co.,Ltd

Tel: 0086-0755-32937425

Add: No 10,JinLing Road,Zhongkai Industrial Park,Huizhou City,China

E-mail:info@vtcpower.com


website:http://www.vtcpower.com

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