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In-situ Expansion Testing Machine
Technical Specifications
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Product name |
In-situ expansion analysis system |
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Model |
TA-WXHYL-1000kg |
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Pressure Adjustment Range |
10kg~1000kg |
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Pressure Adjustment Accuracy |
≤±0.3%FSR |
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Structural Mode |
Vertical type: Servo motor screw drive structure |
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Test Chamber |
1.Inner box dimensions W600 x D600 x H600 mm 2. Compression plate: W300*D400mm 3. Temperature control range of the test chamber: -20℃ to +80℃ (adjustable) 4. Temperature rise rate: ≥ 3℃/min (without load) 5. Cooling rate: ≥ 1℃/min (without load) 6. Temperature fluctuation: 0.5℃ 7. Temperature uniformity: ±2℃ 8. Temperature deviation: ±2℃ (without load) 9. Insulation layer insulation material: Rock wool (flame retardant; high temperature resistant) 10. Inner box material: SUS304 stainless steel t=2.0mm 11. Pressure relief port: There is a pressure relief port on the left side of the equipment. Size: ≥ W200*H200mm. The pressure of the battery explosion shock wave ≥ 0.104MPa will automatically open. 12. Test hole: The hole on the right side has a diameter of Ø100mm, equipped with a silicone plug. It can be opened when the battery explodes and can also be used as a pressure relief port. It is equipped with a chain to prevent it from flying out and injuring people. |
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Displacement Thickness Sensor |
1: The servo motor comes with an encoder that can detect displacement and thickness. 2: An external micron-level displacement sensor is used to detect displacement and thickness. |
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Test trip |
0～90mm |
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Thickness measurement resolution |
0.001m |
Technological Excellence
A.Two Core Testing Modes
(1)Constant Pressure Mode: Monitors the thickness change of the battery at a constant pressure, simulating the actual force conditions of the battery cell
(2) Constant Gap Mode: Monitors the expansion force change at a fixed thickness, evaluating the structural stress on the module/shell
B.Ultra-high Measurement Accuracy
(1) The displacement resolution reaches **0.1μm**, accurately capturing minute phase change expansion
(2) High-precision pressure sensor ensures real-time accuracy of mechanical data
C.Integrated Analysis Software
(1) Synchronously collects six-dimensional data including voltage, current, capacity, thickness, pressure, and temperature
(2) Automatically generates professional analysis charts such as thickness-capacity, expansion force-SOC, and dQ/dV correlations
Applications
Development of silicon-based anode
Research and development of solid-state batteries
Optimization of BMS strategy
Evaluation of battery cell structure
Scientific Data Insights
(1) Irreversible expansion analysis: Compare the thickness changes in the first week and during the long cycle, to assess the irreversible volume expansion caused by the SEI film and side reactions
(2) Phase transition feature extraction: Determine the phase transition stages of the material at different SOC levels by analyzing the slope changes of the expansion curve
(3) Mechanical modulus assessment: Test the mechanical modulus of the battery under various charging and discharging states to provide data support for mechanical simulation
FAQ
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1.Why is "in-situ" testing more important than "ex-situ" testing in the research and development of silicon anode batteries?
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2.How should one choose between the constant pressure mode and the constant gap mode?
If you are studying the inherent physical properties of the materials, it is recommended to use the constant pressure mode; if you are verifying the module structure design or the strength of the PACK shell, the constant gap mode can more accurately simulate the expansion force and damage of the battery in a sealed space. -
3.How stable is the system? Can it support long-term cycle tests lasting for several months?