鋰電池爆炸性檢測儀

BET 22 是一種獨特的儀器，設計用於安全執行鋰電池芯的爆炸性測試，並對其熱穩定性和爆炸特性進行廣泛鑑定。該儀器使用高氣密防爆容器和超低壓電加熱塊，可在實驗室條件下安全地進行這些實驗。

	應用 針對不同電池類型和化學成分的熱穩定性和爆炸性 參數進行比較。 有效開發出熱穩定性更高、爆炸性更低的新型電池 成分。 對不同應用的電池單元進行安全鑑定。 在生產和組裝過程中，透過熱分析對電池樣品進行 品質控制。 評估防火和滅火作業中的火災、爆炸和毒性風險。
裝置內部裝有電熱塊

鋰離子電池單元的熱分析	鋰離子電池單元在 57 °C 下的短路行為

鋰離子電池爆炸的影片序列

優勢和特點

• 可針對在不同溫度、充電狀態和氣氛環境下對電池單元的熱分析、過充電和短路行為進行安全檢測，並在一台儀器上測量爆炸參數。
• 以恒定的加熱速率對整個電池單元進行熱分析，直至爆炸，可精確確定電極隔膜失效、過壓通氣和熱爆炸的溫度，所有這些都與電池單元的設計、熱安全和生產品質有關。
• 短路或過充時，電池在高溫下自熱導致熱失控反應爆炸的特性。
• 多通道高速同步測量溫度、壓力、熱流、光訊號、電壓和電流，可精確呈現電池在意外情況下的各方面行為。
• 大尺寸的觀察窗可以記錄電池爆炸的影片序列，並將其與同時測量的實驗數據疊加比較。
• 在裝置設計上，允許在電池熱分解的所有階段對反應氣體進行採樣，並在規定的氣氛中進行實驗。 也可以對固體殘留物進行取樣。
• 鋰電池爆炸性檢測儀 - BET 22 ，可最為模擬比相關國際標準規定溫度更高的真實的事故場景，以利有效對製程上的改善。

合規 BET 22 符合並遠遠超出以下標準的安全測試要求： UN Recommendation on the Transport of Dangerous Goods, Manual of Tests and Criteria (2015),chapter 38.3, Test T.5 (External short circuit) and Test T.7 (Overcharge). EN IEC 62133-2, Test 7.3.1 (External short circuit), Test 7.3.4 (Thermal abuse) and Test 7.3.6 (Overcharge). EN IEC 62660-2 ed.2, Test 6.3.1 (High temperature endurance) and Test 6.4.2 (Overcharge). EN IEC 62660-3, Test 6.3.1 (High temperature endurance) and Test 6.4.2 (Overcharge).

The BET 22 is a unique instrument designed for safe execution of explosibility tests of lithium battery cells, with extensive characterization of their thermal stability and explosive properties. The instrument allows carrying out these experiments safely in laboratory conditions using gas-tight explosion-resistant container and extra-low voltage electrical heating block.

APPLICATIONS Comparisons of thermal stability and explosibility parameters of different battery types and chemistries Development of new battery compositions with higher thermal stability and reduced explosibility Safety qualification of battery cells for different applications Quality control of battery samples by thermal analysis in production and assembly Assessment of fire, explosion and toxicity risks for the fire prevention and extinguishing operations

Interior of the container with an electrical heating block

Thermal analysis of a Li-ion battery cell	Short-circuit behavior of a Li-ion battery cell at 57 °C

Video sequence of a Li-ion battery explosion.

優勢和特點

• Safe examination of the battery cell thermal analysis, overcharging and short-circuit behavior at different temperatures, states-of-charge and gas atmospheres, with measurement of explosion parameters in a single instrument.
• Thermal analysis of the whole battery cell with constant heating rate until explosion precisely determines temperatures of the electrode separator failure, overpressure ventilation and thermal explosion, all related to the battery cell design, thermal safety and production quality.
• Characterization of the short-circuited or overcharged battery cell self-heating at elevated temperatures leading to the thermal runaway reaction to explosion.
• Multi-channel high-speed simultaneous measurement of temperatures, pressure, heat flow, optical signal, voltage and current precisely characterizes all aspects of the battery cell behavior in accidental scenarios.
• Large observation windows allow to record video sequences of the battery explosions and to overlay them with the simultaneously measured experimental data.
• The container design allows sampling of the reaction gases in all stages of the battery thermal decomposition and carrying out the experiments in defined gas atmospheres. Solid residues can be sampled as well.
• BET 22 can simulate more realistic accident scenarios with higher temperatures than prescribed in the related international standards. 

Thermal explosion reaction of a Li-ion battery cell

COMPLIANCE BET 22 complies with and goes far beyond requirements for safety tests according to these standards:  UN Recommendation on the Transport of Dangerous Goods, Manual of Tests and Criteria (2015), chapter 38.3, Test T.5 (External short circuit) and Test T.7 (Overcharge). EN IEC 62133-2, Test 7.3.1 (External short circuit), Test 7.3.4 (Thermal abuse) and Test 7.3.6 (Overcharge). EN IEC 62660-2 ed.2, Test 6.3.1 (High temperature endurance) and Test 6.4.2 (Overcharge). EN IEC 62660-3, Test 6.3.1 (High temperature endurance) and Test 6.4.2 (Overcharge).