Battery Thermal Runaway and Thermal Propagation Testing Device

1、 Main purpose:Used for thermal runaway and thermal diffusion test of lithium batteries

2、 According to the standard:GB 43854-2024

Thermal diffusion test

2.1Trigger method

Recommend heating or overcharging as optional methods for thermal diffusion testing,You can choose one of the methods,But the chosen method should be able to trigger thermal runaway of individual batteries.

2.2trigger object

Battery pack according toGB 43854-2024第6.2.2.1After standard charging according to the terms,Select the battery pack near the center position,Alternatively, a single battery surrounded by other individual cells can be used as the trigger object.

2.3Heating trigger

Heating contact method for thermal runaway:Use flat or rod-shaped heating devices,And its surface is covered with ceramic or insulating layer. For block heating devices with the same size as individual batteries,This heating device can be used to replace one of the individual batteries,Direct contact with the surface of the triggering object;For thin film heating devices,Always attach it to the surface of the triggering object,The heating area of the heating device should not exceed the surface area of the individual battery;Directly contact the heating surface of the heating device with the surface of the individual battery cell,The location of the heating device and6.4.4.5Corresponding to the position of the temperature sensor specified in the regulations;After installation is complete,in24hInternal starting heating device,Heating the trigger object with the maximum power of the heating device;The power requirements for the heating device are shown in the table2,If necessary, increase the heating power,Ensure that the triggering object experiences thermal runaway;Stop heating when the triggering object experiences thermal runaway.

Main technical indicators:

3.1Trigger mode: overcharge and heating modes are optional;

3.2Maximum heating power: not less than3kW/Single channel;

3.3Power regulation method: Replace heating tubes with different power levels+Adjust the input current size;

3.4Voltage acquisition:8Channel, collection range:0～10VCollection accuracy: ±0.2％FS, Resolution0.01VSampling interval0.1s

3.5Current collection: Read the current of overcharged devices through communication (requires charging and discharging devices to support communication reading)

3.6Temperature collection:8Channel, collection range:0～1000℃, collection accuracy: ±1℃, sampling interval0.1s；

3.7、Charging and discharging motor: voltage0～10V, current0～200ASingle channel, maximum overcharge current100A;(User provided)

3.8Time accuracy: ±1s;

3.9Safety configuration: Three color lights, emergency stop switch;

3.10Communication: computer-controlled (with Lenovo computer)1The set can ensure the stability and real-time performance of long-distance data collection;

3.11Box material:adopt≥20㎜Thick high-strength carbon steel plate, coated with fire-resistant and waterproof materials internally;

3.12Observation window: size not less than300×300mmTempered explosion-proof glass, convenient for observing the status of the tested battery inside the box;

3.13Box door: The side of the box door is equipped with explosion-proof chains;

3.14Safety device: equipped with automatic smoke exhaust, pressure relief, fire protection and other safety measures. Fire extinguishing measures include water spraying or immersion (provide fire extinguishing design plan);

3.15Monitoring device: The equipment is equipped with ≥300Ten thousand pixel high-definition explosion-proof camera, easy to observe the status of the tested product, with video recording function;

3.16Lighting device: The equipment is equipped with lighting fixtures for easy observation of the status of the tested sample;

3.17Install casters at the bottom for easy movement and fixation.

3.18Experimental conditions: voltage, temperature, heating rate, time, one or a combination of the four.

3.19、Reserved smoke collection hole