Analysis of Battery Core and Pack Leakage Detection Methods

Analysis of Battery Core and Pack Leakage Detection Methods

With the development of science and technology, batteries are increasingly used in our daily lives and work. From mobile phones and laptops to electric vehicles, drones, etc., batteries have become indispensable energy storage devices.However, various problems may occur during battery use, among which cell leakage is a common problem.Battery core leakage refers to the leakage of electrolyte inside the battery, which will not only lead to a decrease in battery performance, but may also cause safety issues.Therefore, the detection of battery leakage is particularly important.

The purpose of battery leakage detection is to promptly detect electrolyte leakage inside the battery to avoid various problems caused by battery failure.In order to achieve this goal, scientific methods and advanced equipment are needed for testing.At present, common battery leakage detection methods mainly include the following:
1. Helium detection method, using helium as the tracer gas, first inject helium into the battery core and measure it in the helium leak detector.The advantage of this method is that it is simple and easy to use, but the disadvantages are also obvious. There are obvious limitations on the size of the leakage point, and the cost of use is high.

2. VOC method, also known as organic matter volatilization method, this method measures the total ion current to determine whether there is electrolyte leakage, but the disadvantages are also obvious, and the false detection rate is very high.

3. Mass spectrometry is the best solution among currently known methods. It not only has high accuracy, but also does not require helium, which greatly reduces the cost of use. Since the mass spectrum can be fully scanned to form a full spectrum, it is both qualitative and quantitative.

In short, battery leakage detection is one of the important means to ensure the safe and reliable operation of the battery.In practical applications, scientific methods and advanced equipment need to be used for testing, and appropriate methods should be selected for comprehensive testing according to specific circumstances.At the same time, it is also necessary to strengthen the daily maintenance and upkeep of the battery, and promptly detect and deal with battery faults to ensure the safe and reliable operation of the battery.

Battery pack leak detection
With the popularity of electric vehicles, the safety of battery packs has received increasing attention.Among them, battery pack leakage is a very serious problem. It will not only cause battery performance to decline, but may also cause safety accidents.Therefore, the detection of battery pack leakage has become particularly important.

1. Causes of battery pack leakage
There are many reasons for battery pack leakage, mainly including the following aspects:
1. Battery pack manufacturing defects: There are some defects in the battery pack manufacturing process, such as weak welding, loose sealing, etc., which may lead to leakage.
2. Improper use of the battery pack: During use, if the battery pack is squeezed by external forces, collided, or used for an extended period of time, it may cause leakage.
3. Aging of the battery pack: The electrolyte in the battery pack will gradually decompose over time. If the battery pack ages seriously, leakage may occur.

2. Battery pack leakage detection method
For the problem of battery pack leakage, there are currently several detection methods:
1. Visual inspection: Check the appearance of the battery pack to see if there are any obvious signs of leakage.This method is simple and easy to implement, but its accuracy is low and it is easy to miss detection.
2. Air pressure detection: Pressurize the inside of the battery pack and observe whether there is a drop in air pressure to determine whether there is leakage.This method has higher accuracy, but is complex to operate and requires specialized equipment.
3. Mass spectrometry detection: By measuring the concentration of electrolyte components in the battery pack, it is determined whether leakage has occurred.You can first use mass spectrometry to scan the electrolyte components and select components with high signal separation as missing objects to determine whether there is cell leakage in the battery pack.This method is highly accurate and does not require helium as a missing gas, significantly saving costs.