Air tightness testers for battery packs have gradually become popular on the market. Batteries are the core components of automobiles and directly affectcarVehicle safety.The battery pack manufacturer has a lot of experience in the overall design of the battery pack andTest requirements for air tightness of battery packsEverything has been thought through very carefully.With the increase in battery pack production output of manufacturers on the market and the control of production line costs.The traditional water immersion testing method can no longer meet the needs of battery pack manufacturers. Below we will introduce in detail the air tightness testing method and testing principle of battery packs.

Consequences caused by leakage of new energy vehicle battery packs:

1, The sealing glue between the upper cover and the bottom tank cracks, resulting in poor sealing, which can easily lead to the penetration of external liquid and pollute the battery working environment.

2. Safety valve leakage due to sealing problems may cause damage to other parts.

3, Insufficient sealing leads to acid seepage and liquid leakage at the terminals, which affects the electric wires of the battery car and causes the circuit to burn out.

4, Insufficient sealing will lead to loss of capacity and reduced battery life and safety.

Analysis of key points for air tightness testing of new energy battery packs

At present, the mainstream battery pack air tightness test is mainly divided into positive pressure or negative pressure. Since the battery pack itself is made of thin material, it can withstand less pressure. So generally we can only accept a fewKPaor dozensKPaThe current mainstream air tightness testing method for battery packs is the air pressure testing method. The entire battery air tightness testing cycle takes three minutes or five minutes or even longer, depending on the size of the product.The test results are generally in100Paor5ml/minabout.

Generally, power batteries are relatively large in size. When we conduct air tightness testing, we need to test the batteryPackThe connector must be sealed andPackFind a port as the inflation port. Usually, people will choose an explosion-proof valve or pressure relief valve port as the inflation port for air tightness testing.Therefore, a simple sealing tool is required, which will be customized according to the customer's specific requirements.Then the air tightness detector will perform four stages of inflating, stabilizing, testing, and exhausting the air inlet to obtain the air leakage rate of the battery, and then determine the air tightness of the battery pack based on the air leakage rate.

Analysis on the air tightness testing method of new energy battery packs:

Disadvantages of new energy vehicle battery pack water detection method:

 When testing the air tightness of the battery pack, ifwater inspectionLaw, the battery pack must be opened to determine whether the product is qualified, so the water inspectionLawFor destructive testing.And the testing efficiency is very slow, which is a very unfavorable detection method for manufacturers.

Advantages of new energy vehicle battery pack intelligent air tightness tester:

The intelligent air tightness detectors currently commonly used on the market have many special functions:

High precision

powerful32-bit processor and 24-bit A/D converter, plus patented“Intelligent pressure difference”The algorithm and test accuracy are equivalent to those of the differential pressure type.Compared with the differential pressure type, the testable leakage range is larger, which is basically equal to the test range.

AI algorithm

The automatic learning function can identify the characteristic information of the sample to be tested, analyze the valid data of the sample information, automatically judge and identify the critical point of the leakage volume, and obtain the optimal process time parameters through the analysis of the critical value, which greatly improves the difficulty of getting started with the instrument for the first time.

Powerful testing capabilities

The system comes with2 pressure forms and 8 basic judgment methods can be combined into more than 20 test functions to easily cope with various working conditions and meet your various requirements!

Stable, reliable, improve efficiency

Built-in self-developed patented technology,“IVT&"The pneumatic sealing valve island" greatly improves the test accuracy and speeds up the inflation speed. At the same time, large leaks have been detected during the inflation stage, saving the entire test time.

The testing process is simple and more versatile

There is no need for standard parts, no need to make two sets of jigs, no need to compare with standard parts, and elimination of deformation errors after multiple tests of standard parts.

More scalable

Modular design allows one host to control an execution module composed of multiple full-function valve islands according to requirements.Realize full-featured multi-channel testing including positive and negative pressure and indirect testing.

At the same time, a newVolume judgment, flow rate judgment, reverse judgment3a basic testing method.

On the basis of this function, the high-precision intelligent analysis control system also adds new learning functions, volume measurement functions, rapid inflation functions, super reset procedures, sensitivity self-tests, critical audit functions, abnormal logs, pressure calibration compensation, and more intelligent human-computer interaction prompt functions.

The powerful testing function is very suitable for air tightness testing of battery packs.

New energy battery pack air tightness test solution case display:

Hirays TechnologyCommitted to helping customers deal with the problem of battery pack leak detection through the improvement of new energy battery pack testing technology and the development of cutting-edge testing instruments, and assisting the quality and safety of new energy battery related industries.;We unswervingly take it as our responsibility to create value for customers and comprehensively build a company that meets the requirements of modern development.High-precision intelligent seal detection system, to provide customers with more professional and better services.