Air tightness detection system applied to new energy battery packs and detection method thereof

An air-tightness detection and battery pack technology, which is used in liquid/vacuum measurement for liquid-tightness, and by measuring the fluid's acceleration/deceleration rate, etc., which can solve difficult monitoring, unstable air pressure, troublesome air source adjustment, etc. problems, to achieve the effect of traceability and convenient analysis

Inactive Publication Date: 2017-06-13
深圳市朗能动力技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air source has not been adjusted by a precision pressure regulating valve or a proportional valve, and the fluctuation of the air source may easily lead to unstable air pressure in the test;
[0005] 2. Air source adjustment is troublesome
The pressure of the gas source needs to be adjusted manually. If the gas source is unstable, it needs to be adjusted frequently, and it is not easy to monitor;

Method used

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  • Air tightness detection system applied to new energy battery packs and detection method thereof
  • Air tightness detection system applied to new energy battery packs and detection method thereof
  • Air tightness detection system applied to new energy battery packs and detection method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The basic control principle of the system is realized through the following steps:

[0030] Step (1): The air source passes through the triple piece 1, and is connected to the SMC precision pressure regulating valve 2 and the SMC digital display precision pressure switch 3. Through the SMC digital display precision pressure switch 3, the SMC precision pressure regulating valve 2 can be adjusted to obtain an air source pressure with an accuracy of 0.001Mpa.

[0031] Step (2): After the air source passes through the SMC digital display precision pressure switch 3, it is connected to the SMC precision proportional valve 4, and the air source passing through the SMC precision proportional valve 4 is connected to the solenoid valve 6. The data acquisition line of the SMC precision proportional valve 4 is connected to the software control device 5, so that the software control device 5 collects the air pressure value after passing through the proportional valve 4.

[0032] S...

Embodiment 2

[0038] The operation steps of the air tightness detection system are as follows:

[0039] Step A: The equipment is ventilated, powered on, and the power switch of the equipment is turned on. Turn on the industrial computer of the test system, open the software, log in the account, and enter the software operation interface;

[0040] Step B: Open the parameter setting interface, input the air pressure setting value -0.1Mpa, the pumping time is 5S, and the pressure holding time is 60S (the time of pumping and holding pressure can be set according to the size of the battery pack);

[0041] Step C: Input the barcode number of the battery pack to be tested, and then screw the gas pipe 12 of the airtight detection system 13 into the airtight test interface on the battery pack 10;

[0042] Step D: Click the "Start" button on the detection system to start testing the air tightness; the detection system first pumps air for 5 seconds, and when the air pressure in the battery pack 10 re...

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Abstract

The invention provides an air tightness detection system applied to new energy battery packs. The air tightness detection system comprises an air source FRL (air filter, pressure reducing valve and atomized lubricator), a pressure regulating valve, a pressure switch, a proportional valve, an electromagnetic valve, a vacuum generator, a one-way valve, a pressure sensor and a control device which are connected in sequence. The system is a precise battery pack air tightness detection system, and the precision reaches 0.01 Mpa. Precise control is conducted from an air source to guarantee the stability of the system, and imported precise components are selected to guarantee precise control over the air source. The precise proportional valve allows the pressure value to be directly set on a control system and also has the advantage of automatically adjusting the pressure of the air source. A small pressure sensor collects air pressure data in real time and sends the air pressure data to a software system, a visual 'T (time)-F (pressure)' analysis chart is formed in the saving process, the air tightness of each battery pack can be conveniently analyzed, and meanwhile the air tightness detection system has traceability.

Description

technical field [0001] The invention belongs to the field of new energy, and relates to an air tightness detection system applied to a new energy battery pack and a detection method thereof. Background technique [0002] In the new energy battery pack, there is a waterproof protection level requirement. After the entire pack is assembled, the airtightness of the battery pack needs to be tested. The airtightness of the battery pack directly affects the safety of the car, and has very high requirements for the entire airtight detection system. [0003] At present, the air tightness test of the battery pack generally adopts the positive pressure method, and the air source air pressure is controlled through the triple piece and the solenoid valve, connected to the battery pack and the digital pressure switch, and judged by manually reading the air pressure value on the digital pressure switch Are there air leaks. This simple gas path mainly has the following defects: [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 李枝成方万里王冠程
Owner 深圳市朗能动力技术有限公司
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