Aluminum shell gas pressure resistance burst both, new energy power battery shell test equipment comprehensive upgrade

Aluminum case of power battery is the main structure of power battery, made of aluminum alloy material, which mainly plays the role of protecting the electric core, isolating the internal gas of the battery and conducting heat.

JCGK 电芯壳体耐压测试设备

We can also understand that the aluminum case of the power battery is like the "exoskeleton" of the battery, made of strong aluminum alloy, responsible for protecting the fragile electric cell, and also like a gas-tight chamber, which firmly seals all kinds of gases in the battery. ThereforeIts safety and performance are related to whether the "heart" of new energy electric vehicles is reliable, which directly affects whether we can travel with peace of mind.

Ⅰ.Burst Test and Pressure Resistance Test

There are two important "fitness tests" to ensure the superior quality of aluminum housings:

• Burst pressure test:也叫气体爆破测试，爆破测试是指在 1~3.5MPa 压力下铝壳爆开，即用高压气体冲击铝壳，观察电芯壳体的破坏情况，来评估铝壳的强度。
• Pressure-resistant pressure test:也叫气体耐压测试，耐压测试一般在 1.2MPa 压力下铝壳不爆开，即用高压气体冲击铝壳，观察电芯壳体的膨胀情况，来评估铝壳的耐压性。

In a nutshell.Burst pressure testThis is to "shock" the aluminum case with ultra-high pressure to see if the aluminum case "holds up" under the enormous pressure. This is to check the impact strength of the aluminum case.

Pressure-resistant pressure testThe aluminum case is continuously "hit" to check how many times it can be "hit" and to observe the deformation of the aluminum case under the repetitive action of high pressure. This is to check the durability of the aluminum case.

Battery pack airtightness testing is mainly for the battery pack shell, interface, connectors, etc. to ensure that the battery pack is not contaminated or invaded by dust, water vapor and other impurities in the external environment, to prevent the battery pack from short-circuiting, explosions and other safety accidents.

Ⅱ.Shell pressure resistance test equipment

JCGK 研发的这款Shell pressure resistance test equipment，采用了先进的气动加载系统，可以对铝壳产生 3 兆帕的高压冲击，完全模拟电池在使用过程中可能遭遇的各种极端压力情况。

The whole test system is highly intelligent, with a special control program to set pressure parameters, test frequency, cycle time, etc., so that the test process is highly automated. At the same time, the equipment is also equipped with precise pressure and deformation sensors, which can monitor the testing process in real time and make intelligent adjustments. Each time, the test data can be printed in real time, support U disk export, and have the function of MES data docking and traceability to ensure the accuracy of the results.

Also.JC-KT3000 耐压测试设备不仅可以进行的恒压爆破测试，还具备更为复杂和精确的变载多级耐压测试功能。The equipment is equipped with a unique multi-stage pressure control system that automatically changes different test pressure levels according to a preset program.

Testers can set up 5, 10, or even more levels (up to 28) of stress test procedures as needed.The equipment will progressively increase the pressure in sequence, with repeated impacts at each pressure level before moving on to the next higher pressure test.

Throughout the multi-stress variable load test, the sensor continuously monitors the deformation of the aluminum housing and automatically stops the test if any safety hazards are detected.This variable load test can be conducted continuously for more than 4800 hours, fully verifying the product's long-cycle voltage withstand reliability.

Through this precise and demanding multi-stage pressure shock test, theJC-KT3000 设备完全可以模拟电池在使用寿命内可能遭遇的任何压力情况，让电池铝壳的安全性达到最大程度验证。这项突破将大幅提升整个动力电池行业的测试水平。

III.Aluminum case voltage test procedure

铝壳耐压测试主要通过 JCGK 耐压测试设备进行，其基本步骤包括：

1. Prepare the product under test:Assemble the aluminum housed product with the sealing assembly and install it in the fixture mechanism of the instrument.
2. Connect the air source, air line and circuit:将仪器与工厂气源 0.4~0.8MPa 连接（已内置增压泵），连接电源，并确认气路畅通。设置测试参数：根据被测产品的耐压爆破要求，设置相对应的压力加载参数，例如测试压力、充气速率、测试时间、峰值浮动等。
3. Start testing:Press the test button, the instrument will automatically carry out the test and display the test results. If the test result meets the requirement, the green light will be on and the interface of the instrument will show OK, then the product is qualified for pressure resistance burst; if it does not meet the requirement, the red light will be on and the interface of the instrument will show NG, then the product is not qualified for pressure resistance burst.
4. Record test results:The test results are recorded in the historical test records and categorized for storage, and can be exported via USB flash drive and printed by printer in real time.
5. Maintenance and upkeep:After the test, the instrument needs to be maintained and serviced to ensure long-term stable operation.

After the test is completed, the aluminum shell can be checked for deformation, rupture and other damages under overpressure conditions. Based on the test results, it can be determined whether the product meets the requirements for pressure-resistant safety. If the product is ruptured or otherwise damaged during the test, it means that the product does not meet the pressure resistance safety requirements and needs to be improved.

IV.Summarize

Through this pressure burst test, the mechanical strength and safety coefficient of the aluminum shell can be comprehensively verified to ensure that it can withstand the rated pressure in use and ensure the safety and reliability of the new energy battery.

JCGK Shell pressure resistance test equipment的投入使用，大大提升了动力电池铝壳的质量控制能力，让电动汽车用户对动力系统的安全性更有保障。

If you are also interested in new energy battery testing, please feel free to consult JCGK's related instruments. Professional equipment will be your strong support in R&D and production process.