Top Tier Class A LiFePO4 Cells, BMS and Mechanical Structure

CHARGEX® Lithium Ion Battery Systems have several layers of safety redundancy at the cell level. Notably, an internal thermal fuse between the anode and cathode which shuts down the cell before overheating occurs, preventing pressure build-up. In the event that the battery is consumed by fire or is exposed to temperatures in excess of 135°C, the separators passage for the ion will close and no longer flow. The same situation applies for external protection. When the internal air pressure is over 1.5Mpa, the air vent will flip over, the CID will detach, and the close circuit breaks - causing the ion to no longer flow.

The CHARGEX® 32700 Lithium Ion Battery is a CLASS A cell with ZERO safety issues and proven reliability for over 12 years, making it among the most mature and safest LiFePO4 battery cells on the market. If quality, safety, and reliability is important to you or your organization, contact us today and we will help you determine the best energy storage solution for your application. 

THERMAL FUSE
 

Internal Cell Safety Fuse

Our cells have a built-in thermal safety fuse between the anode and cathode that will break in the unlikely event the cell overheats.

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.

Essential Cell Safety Features & Design

The main issue with all lithium batteries is how to prevent a cell from over heating and rupturing if over charged. CHARGEX® Lithium Ion Batteries have several layers of safety redundancy systems at the cell level. The most notable safety feature in our latest cell design is the internal thermal fuse between the anode and cathode that will shut down the cell before the temperature rises, preventing pressure build up and activating the 1.5Mpa safety vent. In the unlikely event that the thermal fuse fails and pressure was released through the safety vent, the electrolyte has a flame retardant additive making the battery safe.

 These conditions would likely only occur if a charger or controller failed, spiking current into the battery. The BPS is designed to protect the cells from this anomaly by opening at 15.8V and would have to fail in the closed state allowing excess current into the cells. The CHARGEX® Group 31 - 12V 100AH lithium battery is built with 80 - cylindrical 3.2V 5AH (32650) cells combined with 4 sets of 20 cells in parallel and then combined in series. All 80 cells are matched by measuring 10 consistencies during several charge / discharge cycles at the end of production.


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




Download our Cell Safety Features 
Data Sheet Below to Learn More:


Download Now

Chargex Battery Cell Safety Features Data Sheet


Cylindrical Cells

Cylindrical cells are the most commonly used cell type today. The cylindrical design allows for better automation processes and techniques that increase consistency and lower cost.

Prismatic Cells

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



Cylindrical 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. CHARGEX® cells bolt through lengthway circuit boards that will prevent a bad cell from shorting out the rest of the pack, allowing it to continue functioning with slightly reduced capacity. With prismatic cells if one cell goes bad it can compromise the whole battery pack. Cylindrical cells will also radiate heat and control temperature better than prismatic cells.





Prismatic Disadvantages

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. CHARGEX® cells bolt through lengthway circuit boards that will prevent a bad cell from shorting out the rest of the pack, allowing it to continue functioning with slightly reduced capacity. With prismatic cells if one cell goes bad it can compromise the whole battery pack. Cylindrical cells will also radiate heat and control temperature better than prismatic cells. Prismatic cells are made up of many positive and negative electrodes sandwiched together leaving more possibility for short circuit and inconsistency. The higher capacity makes it difficult for the BMS to protect each cell from over charging and dissipating heat. The larger cell size minimizes the possibility for automation leading to a lower degree of consistency. The internal electrodes can easily expand and contract causing deformation which can lead to a internal short circuit and are more prone to swelling similar to lead batteries.





CHARGEX® EnergyWave
Grade A Battery Protection System

Designing a BMS with grade A materials is essential to the reliability and cycle life of the battery. The CHARGEX® Energywave BMS incorporates 12 years of innovation providing highly efficient power and improved reliability with the highest quality chips, pure metals, and components available.

Many of our Lithium Iron Phosphate Batteries are built with a fully automatic, built-in Battery Protection System. For OEM and prototype solutions, CHARGEX® is able to fully customize the BMS with the best parameters for your applications. 





If having the best is important to you, CHARGEX® Lithium Batteries have redundant safety and design features that include: 

  • Class A LiFePO4 Cells
  • Advanced Safety Features
  • Better Structural Integrity
  • Higher Current Conductivity
  • Stainless Steel Cells
  • High Quality Components

All essential to ensure the safety and reliability of our batteries in mission critical aerospace and defense applications. 


Download our Cell Safety Features 
Data Sheet Below to Learn More:

Download Now


12V 100AH Lithium Ion Battery Cell Structure


Contact Us for more information by sending your message below or give us a call at 1-855-CHARGEX (1-855-242-7439)