UL9540A Thermal Runaway Lithium Battery Explosion Test Chamber

Thermal Runaway Lithium Battery Explosion Test Chamber 

Product introduce

Lithium battery explosion chamber is mainly used for lithium battery thermal runaway combustion and even explosion experiments. Lithium battery explosion action quickly, the instantaneous release of energy is huge, and the release of a variety of toxic and harmful gases, so the experiment in a sealed environment, the need to follow the process of pressurization of the explosion impact to design pressure-resistant tank.

Core explosion chamber is mainly composed of the following parts: explosion chamber, heating system, pressure detection system, temperature detection system, air purging system, nitrogen filling system, vacuum system, gas sampling system, data acquisition system, computer;

Equipment features: simulation of monomer battery thermal runaway gas production, used to assess the monomer battery thermal runaway when the gas production, rate, composition. Temperature, pressure and voltage data can be collected during the test; and the runaway gas can be sampled and collected along with the reaction time; and it has the functions of video monitoring, simulated vacuum and inert gas atmosphere.

This test program is designed and developed with reference to UL9540A standard, which can meet the requirements of UL9540A standard for thermal runaway test of electric core. The overall design is based on the characteristics of the core level test, taking into account that the test product is different from general products, to ensure maximum safety and reliability of the whole system.

Core level test characteristics are mainly thermal runaway and gas composition and explosion characteristics, the test program is divided into four parts: First, lithium battery explosion chamber for lithium battery thermal runaway combustion and even explosion experiments; Second, gas chromatography analysis, thermal runaway after the generation of a variety of gas composition analysis. Third, the explosion limit test, used to test combustible gases or vapors combustion and explosion of the upper limit of concentration and lower limit of concentration, as well as the explosion pressure, explosion index, etc.; Fourth, the release of the gas combustion rate test, combustible gases in the vertical glass tube combustion speed and related auxiliary parameters, to achieve the combustible gas combustion rate measurement;

Standard

UL 9540 A

Test Method for Evaluating Thermal Runaway Fire Propagation in Battery Energy Storage Systems

Main parameter

Tank structure

The experimental chamber is designed as a cylindrical tank, placed horizontally;
Composed of cabin body, cabin door, supporting feet, observation window, auxiliary heating failure device, etc., as shown in above Figure;
Material: SUS304 stainless steel.
The chamber adopts three-piece quick-opening mode, which is convenient for operation;
The hatch and the barrel through the hinge connection can be quickly swung open, convenient for the installation of experimental samples, testing instrument layout.
The highest pressure: the maximum withstand pressure of not less than 3MPa, constant withstand pressure of not less than 2.5MPa;
Equipped with security design: the use of imported pressure relief valve and relief piece of double pressure relief channel, safety redundancy design;
Inlet, Automatic control of precision valves, can complete the nitrogen filling and blowing function;
The exhaust port, precision valve control can complete the vacuum, venting and collection of sample gas function;
Solenoid valve front-end installation of ball valves to protect the solenoid valve;;
Pressure measurement port, connected to the pressure gauge, pressure transmitter and safety relief valve;
Vacuum system: vacuum pump pumping rate ≥ 10L / s, to reach the vacuum degree ≤ 1.0kPa, the tank meets national standards require high-pressure vessel leakage test requirements
Line inlet reserved, thermocouples, heating lines, signal lines and other line interfaces (can be customized)
The container is equipped with high-pressure observation window, using high-pressure glass;
The warehouse is equipped with lighting windows and monitoring windows, external lighting;
Observation lenses and filler lenses: observation lens diameter 125mm, pressure resistance of not less than 3MPa; filler lens diameter 125mm, pressure resistance of not less than 3MPa.

The pressure measurement system

Including high-pressure pressure gauge, Germany imported high-pressure sensor and Germany vacuum manometer composition;
High-pressure sensors and vacuum sensors are equipped with high-pressure ball valve protection at the front end, according to the operating procedures to automatically select the appropriate pressure measurement channel;
High pressure sensor is used to monitor the pressure change during battery failure;
Range 0-3MPa, accuracy of not less than ± 0.5% FS, 4 acquisition channels, 10Hz;
Solenoid valve: high-pressure solenoid valve, pressure resistance of not less than 3MPa, temperature resistance of not less than 100 ℃;

Temperature measurement system

1.Imported Omega thermocouple, temperature resistance not less than 1100 ℃, grade not less than II;
2. Support (16 channels) temperature signal acquisition
Control and detection system
Computer + Labview computer control system;
The program automatically controls the rate of temperature rise; heating rate of 4 ℃ ~ 7 ℃ / min;
Real-time temperature acquisition system, real-time generation of temperature data curve;
Real-time monitoring of the pressure in the chamber and the ambient temperature in the warehouse, real-time analysis of the battery release gas generation rate;
Automatically calculate and analyze the total amount of gas released from the battery;
6,Program automatically replace the gas in the chamber to meet the oxygen concentration in the chamber is less than 1%;
7. Battery voltage, current, temperature, pressure data synchronization acquisition, for the analysis of the battery thermal runaway process of current/voltage changes.
8. Accurate testing of the battery thermal runaway starting temperature, maximum thermal runaway rate and other thermal behavior parameters;
9. Multi-way gas collection bag for sample gas collection, with GC or FTIR for release gas composition and concentration analysis;
10. Equipped with chamber gas automatic cleaning program;
11. Each channel polling sampling, gas sampling time interval can be set;
 

Electrical interface
Sample heating interface 2 channels;
Voltage acquisition 4 channels;
Temperature acquisition 16 channels;
Pressure signal acquisition 2-way (vacuum + high pressure);
Reserved for 2-way charging interface, each 300A, can be used in parallel;

Data acquisition module

Temperature acquisition 0 ℃ - 1300 ℃ accuracy: ± 1 ℃ resolution: ± 0.1 ℃ 16 acquisition channels, frequency 10Hz ;
Pressure acquisition 4-20ma, accuracy: ± 0.25% FS Resolution: 0.01ma, 4 acquisition channels, frequency up to 100Hz;
Data preservation Production of independent documents and video, temperature, voltage, pressure for the same interface 

Specification :

The cabin occupies the size: width 1.5 meters X length 2.5 meters X height 2 meters
The total amount of equipment: 1300KG
Power supply: 220V, 6kw