Why choose Precision Engineering for new energy battery pressure resistance and air tightness testing? Four advantages of one article to understand

Lithium BatteryPressure-resistant airtightness testThe core purpose of the "Battery Case" is to verify that the battery case or module, when subjected to a specific air pressure (or hydraulic pressure)Sealing performance and structural strengthTo ensure that the battery cells will not be subsequently charged, discharged, stored, transported, warmed, or subjected to external forces.Risk of liquid leakage, air leakage or bursting. This is both a safety requirement and a key aspect of regulations and quality control.

First, why lithium batteries must do pressure resistance and air tightness test

The internal package structure of lithium battery is extremely precise, the electrolyte is sensitive to moisture and has a certain corrosiveness, once the seal is bad, it will directly cause the following problems:

Precision Engineering customizedPull the explosion of water detection machine

1. Electrochemical safety risks::
   If there is a micro-leakage in the shell weld, pole post, valve port, etc., air or moisture will react with the electrolyte after entering, generating gas and heat, leading to bulging of the core, capacity degradation and even thermal runaway.
2. Mechanical structure reliability::
   Modules and PACK packages are often subjected to multiple cold/heat cycles or vibration testing, and structural fatigue can cause micro-cracks. Pressurized hermetic testing can detect hidden defects in advance and prevent failure after mass production.
3. Regulatory and quality standard requirements::
   Power batteries must comply with standards such as GB/T 31484 (cycle life and safety requirements), UN38.3 (transportation safety certification), etc., all of which require that they have the following featuresShell Seal Integrity Verification RecordThe

Second, the principle and method of pressure resistance air tightness test

In the industry, two types of methods are commonly used for lithium battery cases:

In automated production lines, these tests are usually performed byPrecision EngineeringNew Energy Test Equipmentexecution, you can quickly determine whether the product meets the standard.

Third, the relationship between the air tightness test and the pressure resistance test

Pressure Resistance Test ConcernsHow much pressure it can withstand without breaking"Airtightness Testing Concerns"Leakage of air at operating pressure".

Fourth, Jingcheng Industrial Technology in the lithium battery pressure resistance air tightness test application advantages

Jingcheng Gongke (JCGK)As a deep-rooted in the field of airtightness testing for more than ten years, theIndustry LeadersIn the field of new energy battery testing, we have formed a variety of targeted programs:

1. Multi-Channel Automated Inspection Platform
   It can realize multi-station parallel testing of battery cells, cases, battery covers, etc., and increase the efficiency by more than 500%.
2. Multi-mode detection capability
   It supports direct pressure method, flow method, differential pressure method, helium detection method, breathing cycle test, burst pressure test and real water test integration, etc. It is suitable for different structures such as cylindrical, square and soft package.
3. High-precision control and traceability system
   Detection accuracy can reach 0.1Pa level, with pressure curve record and two-dimensional code traceability, in line with ISO9001 quality system requirements.
4. Case Validation
   We have provided pressure resistance + hermeticity joint inspection solutions for many famous power battery and energy storage enterprises (such as module factories and PACK lines), realizing automatic inspection of key parts such as shell welds, explosion-proof valves, liquid injection ports, and so on.

Precision Industrial Solutions for the New Energy Industry

Summarize

The core objective of lithium battery pressure-resistant hermetic testing:

In the factory through scientific means to verify its structural safety and sealing reliability, to prevent leakage, bulging, thermal runaway, to protect the product life and use of safety.

For manufacturing companies:

high precisionAir tightness testing equipmentIt is not only a technical barrier for quality assurance, but also the basis for international certification (CE, UN38.3, IEC62619) and the development of overseas markets.

Jingcheng Gongke (JCGK)With the complete gas tightness testing technology system and rich experience in new energy projects, it is becoming an important force in replacing imported testing equipment and serving the lithium industry chain domestically.

Original Statement:this paper was written byShenzhen Jingchenggongke Technology Co., Ltd.Written by the technical team, reproduced with attribution.Data sources:Precision Engineering internal test data and customer cases.