Advancing Lithium Battery Safety: Cell Thermal Conductivity Test Devices

In the landscape of energy storage solutions, lithium-ion batteries stand out for their high energy density and rechargeable nature, powering everything from smartphones to electric vehicles. However, along with their undeniable benefits comes the imperative need for ensuring safety and thermal management. Zeal Instruments, a pioneering force in the realm of lithium-ion battery thermal parameter testing, offers a suite of cutting-edge laboratory testing solutions. Among their arsenal are Cell Thermal Conductivity Test Devices, which play a pivotal role in enhancing battery safety and performance.

Thermal Management Parameter Testing

This suite of testing solutions encompasses the evaluation of heat generation, heat capacity, heat generation during charge and discharge of the battery, specific heat capacity, thermal conductivity, and thermal conductivity during battery charging and discharging under varied conditions. By meticulously examining these thermal properties, Zeal Instruments aids in the development of high-performance battery systems and facilitates precise thermal management simulations.

1.1 3D Thermal Properties Analyzer

This advanced tool enables the comprehensive analysis of thermal properties in three dimensions, providing invaluable insights into the intricate dynamics of heat distribution within battery cells.

Based on non-contact thermography and dynamic 3D data inversion technology, TCA 3DP-160 is suitable for evaluating the thermal conductivity and thermal diffusivity of complex structured samples(multi-layered, heterogeneous, anisotropic) such as lithium batteries.

1.2 Dual-state Thermal Parameter Tester

By simulating diverse operating conditions, this tester offers a nuanced understanding of thermal parameters, crucial for optimizing battery performance and safety across different scenarios.

Based on non-contact temperature measurement with infrared thermography and 3D heat transfer model inversion analysis technology, TCA 2SC-080 is suitable for evaluating heterogeneous core-shell structured samples. It enables direct, non-destructive testing of the thermal conductivity and internal thermal resistance of hard-shell lithium battery cells.

Gas Explosion Characteristics Testing

Gas explosion characteristics testing forms a crucial component of battery safety evaluation protocols. Zeal Instruments’ Cell Thermal Conductivity Test Devices are meticulously designed to assess the explosion characteristics of battery thermal runaway and the release of eruptive substances. Through comprehensive analysis, parameters like explosion limits, maximum explosion pressure, explosion index, and gas combustion rate are meticulously evaluated, providing insights essential for mitigating potential hazards during battery operation.

2.1 Multiphase High-Pressure Explosion Limit Tester: Precision in Assessment

Zeal Instruments’ Multiphase High-Pressure Explosion Limit Tester stands as a pinnacle of precision in assessing explosion limits under high-pressure conditions. This advanced tester enables researchers and industry professionals to determine safety thresholds with unparalleled accuracy, facilitating the design of safer battery systems and the implementation of robust safety protocols.

Moreover, it offers the capability to measure various combustion and explosion characteristics, including lower and upper explosive limits, limiting oxygen concentration, explosion pressure, pressure rise rate, and more, providing comprehensive insights into the behavior of materials under extreme conditions.

2.2 Gas Burning Rate Tester: Quantifying Combustion Dynamics

For quantifying the burning rate of gases emitted during battery thermal runaway, Zeal Instruments offers a specialized Gas Burning Rate Tester. This tool provides researchers with precise measurements of combustion dynamics, aiding in the understanding and mitigation of potential risks associated with gas explosions.

2.3 Explosion Limit Tester: Defining Safety Thresholds

Zeal Instruments’ Explosion Limit Tester plays a pivotal role in defining safety thresholds by determining the upper and lower limits of gas explosions. By accurately measuring these limits, researchers can establish safety protocols tailored to specific battery configurations, ensuring optimal safety during operation.

Online Gas Composition Analysis: Real-Time Insights

Zeal Instruments provides a comprehensive solution for online gas composition analysis, particularly tailored for studying the gas composition during thermal runaway of lithium batteries. By simulating the thermal runaway process of batteries in an adiabatic environment, this solution synchronously analyzes the evolution of gas composition throughout the entire process.

It accurately measures key parameters such as gas generation rate, gas pressure, and gas composition analysis, providing invaluable data support for studying the chemical reaction mechanisms at various stages of thermal runaway. This capability assists in optimizing battery materials and structures, thereby enhancing battery safety and performance.

Thermal Safety Characteristic Parameter Testing: Assessing Thermal Stability

Zeal Instruments’ Thermal Safety Characteristic Parameter Testing is integral to understanding the thermal stability of battery cells. By subjecting cells to various abusive conditions, parameters such as the onset temperature of self-heating, thermal runaway onset temperature, maximum temperature rise rate, and thermal runaway incubation time are meticulously measured. This comprehensive testing enables researchers and industry professionals to assess the safety and reliability of battery cells under diverse scenarios.

3.1 Large Battery Adiabatic Calorimeter: Comprehensive Thermal Analysis

The Large Battery Adiabatic Calorimeter by Zeal Instruments offers a comprehensive solution for the thermal analysis of large battery systems. This advanced device, with a furnace chamber diameter of 420mm and depth of 520mm, facilitates precise measurement of heat release rates and thermal stability, providing detailed insights into the thermal behavior of battery cells. Specifically designed for researching square, pouch, and similar battery cell types, as well as small-scale modules, it serves as a vented adiabatic calorimeter, crucial for studying thermal runaway and propagation mechanisms.

By conducting thorough thermal analyses, the Large Battery Adiabatic Calorimeter aids in the characterization of battery safety parameters, crucial for the development of safer battery systems. With the capability to measure parameters such as Thermal Runaway Onset Temperature, Maximum Rate of Temperature Rise, Adiabatic Temperature Rise, Specific Heat Capacity, and Heat Generation during Charging/Discharging, it enables thorough assessment and optimization of battery designs for enhanced safety and performance.

3.2 Small Battery Adiabatic Calorimeter: Precision in Compact Designs

For smaller battery systems, Zeal Instruments offers the Small Battery Adiabatic Calorimeter. Despite its compact design, this calorimeter maintains the precision and accuracy synonymous with Zeal Instruments’ products. Researchers can rely on this device for precise measurement of thermal parameters, ensuring thorough safety evaluations even in constrained environments. The Small Battery Adiabatic Calorimeter is a valuable tool for assessing the thermal stability of battery cells in various applications. With the capability to measure parameters such as Thermal Runaway Onset Temperature, Maximum Rate of Temperature Rise, and Adiabatic Temperature Rise, it provides comprehensive insights into the thermal behavior of battery cells, aiding in the development of safer battery systems.

Material Safety Assessment

Characterizing the thermal stability and safety of battery materials is paramount, and Zeal Instruments’ suite of testing solutions facilitates precise measurements of parameters related to thermal decomposition characteristics and electrolyte safety.

4.1 Adiabatic Acceleration Calorimeter: Precise Measurement of Heat Release

The Adiabatic Acceleration Calorimeter by Zeal Instruments can assess the thermal stability of lithium battery materials, measure the heat decomposition and exothermic properties after mixing positive electrode materials with electrolytes, and calculate the thermodynamic and apparent kinetic parameters of decomposition reactions. This aids in battery design and thermal system simulation, improving the thermal safety performance of battery systems.

4.2 Microscale Continuous Closed Flash Point Tester: Assessing Flash Point

For assessing the flash point of battery electrolytes, Zeal Instruments’ Microscale Continuous Closed Flash Point Tester proves invaluable. This tester facilitates continuous measurement of flash points in a closed system, ensuring accurate and reliable results. By identifying critical temperatures at which ignition may occur, researchers can effectively evaluate the safety of battery electrolytes. 

4.3.Micro-Vapor Pressure Tester: Understanding Vapor Pressure

The Micro-Vapor Pressure Tester by Zeal Instruments allows researchers to explore the vapor pressure properties of battery electrolytes. By accurately measuring vapor pressures across various temperatures, this tester offers insights into the volatility and stability of electrolyte components. Such comprehension is essential for the development of safer battery systems with improved performance.

Conclusion

From the characterization of battery materials to the assessment of thermal runaway characteristics, Zeal Instruments’ Cell Thermal Conductivity Test Devices find applications throughout the battery lifecycle. Their solutions, specifically designed for safety and reliability, offer comprehensive evaluations of battery cell safety margins and failure hazards. Moreover, they assist users in achieving thermal management and design optimization. In the quest for safer and more efficient lithium-ion batteries, Zeal Instruments emerges as a beacon of innovation and expertise. 

Their Cell Thermal Conductivity Test Devices not only enable comprehensive analyses of thermal properties but also pave the way for the development of high-performance battery systems with enhanced safety features. As the lithium-ion battery industry continues to evolve, the role of precise testing and thermal management solutions becomes increasingly indispensable, and Zeal Instruments stands at the forefront, driving progress and innovation in this vital domain.