IEC 60335-1: 2020 – Appendix BB-20.1 Battery Case Pressure Testing System

The Battery Case Pressure Testing System is designed for evaluating the mechanical strength and pressure resistance of battery enclosures used in battery-powered appliances with metal-ion chemistry batteries.

According to IEC 60335-1:2020 Appendix BB-20.1, this equipment simulates abnormal battery venting conditions by applying controlled internal pressure to verify whether the battery enclosure can withstand pressure generated during a fault condition.

This laboratory battery safety testing equipment is suitable for manufacturers, certification laboratories, and research institutions conducting battery enclosure pressure tests, lithium battery safety evaluations, and IEC compliance verification.

• Designed according to IEC 60335-1 Appendix BB-20.1 battery safety requirements
• Suitable for complete metal-ion chemistry battery assemblies
• Manual pressurization system with precise pressure monitoring
• Adjustable gas injection volume for different test requirements
• Pressure verification through high-accuracy mechanical pressure gauge
• Compact tabletop structure suitable for laboratory environments
• Reliable solution for battery-powered appliance safety testing

The specimen is pressurized using a manual pump until the initial pressure reaches 2070 kPa ±10%. The pressure is monitored through the built-in pressure gauge, while the piston stroke mechanism controls the pressure adjustment process.

After reaching the specified initial pressure, the required air volume is injected through a Φ2.85 ±0.05 mm orifice according to the standard requirement. The pressure reduction process is then monitored, and the internal pressure shall decrease to below 70 kPa within 30 seconds.

For the manual version, the injected air volume is controlled by the operator according to the test requirement.

Scope of Test Specimen, Application, Principle, Structure and Operating Environment
Test Specimen and Limitations	Complete batteries using metal-ion chemistry.
Test Purpose	Used to measure the pressure resistance of the enclosure of battery-powered appliances equipped with complete batteries using metal-ion chemistry. The test verifies whether the enclosure can withstand the pressure generated by battery venting during a fault condition and evaluates the enclosure strength.
Equipment Structure	The equipment adopts a box-type structure with manual control and pressure gauge display. The gas volume can be adjusted according to test requirements. It features simple operation and a compact appearance, incorporating the advantages of similar products worldwide. Dimensions: Approx. 800 × 500 × 600 mm (W × H × D) Weight: Approx. 80 kg
Operating Environment	Power supply: AC 220V ±10%/50–60 Hz; Operating environment: operating temperature 0–40 °C, humidity 30%–90%;
Performance Specifications
Model	SN1123B
Station	Single station
Electrical Control Method	Manual control, button operation and pressure gauge display
Drive method	Manual pressurization
Test Medium	Gas
Test Pressure	0.01–2.5 MPa; displayed on pressure gauge
Test Time	Manual control
Test Process	Manual specimen installation/removal and manual process control
Sealing Connector	Standard configuration: one set; orifice diameter: Φ2.85 ± 0.05 mm
Equipment dimensions and weight	L*W*H = 800*500*600mm, weight: approx. 80 kg
Air Injection Volume	20,30,50,100ml
Operating Environment	Atmospheric Pressure: 80–106 kPa; Ambient Temperature: 5–40°C; Relative Humidity: 20–80% RH. The equipment shall be installed in an environment free from severe shaking or vibration, electromagnetic interference, dust, explosive gases, and corrosive gases, with good ventilation and heat dissipation conditions.

• Lithium battery powered appliance safety testing
• Battery enclosure mechanical strength verification
• IEC 60335-1 compliance testing
• Rechargeable battery product development
• Battery safety certification laboratories
• Household appliance manufacturers
• Battery-powered equipment manufacturers