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Automatic monitoring and early warning system and monitoring method for sealing performance of power battery pack

A power battery pack, automatic monitoring technology, applied in liquid tightness measurement using liquid/vacuum degree, by measuring the increase and deceleration rate of the fluid, and by detecting the appearance of the fluid at the leakage point, etc., it can solve the problems of water ingress in the power battery, Power battery airtight failure, complex working links and other issues, to achieve high reliability, shorten the monitoring cycle and monitoring costs, simple and convenient working process

Pending Publication Date: 2021-11-16
浙江机电职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the power battery is installed on the chassis, the corresponding working links are relatively complicated. At the same time, the corresponding seals may also age with the use of the car, which will cause the airtightness of the power battery to fail. When there is water on the road, it will cause the power battery to pass through. Water ingress will cause short circuit inside the power battery to damage the power battery or even cause an accident
Therefore, it is necessary to test the air tightness of the power battery. At present, manuf

Method used

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  • Automatic monitoring and early warning system and monitoring method for sealing performance of power battery pack
  • Automatic monitoring and early warning system and monitoring method for sealing performance of power battery pack
  • Automatic monitoring and early warning system and monitoring method for sealing performance of power battery pack

Examples

Experimental program
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Example Embodiment

[0040] Example 1

[0041] Join figure 1 with 2 The technical solution of the present invention is a power battery pack sealing automatic monitoring early warning system, including power battery pack 1, purifying device 2, a first solenoid valve 3, an air pump 4, a second solenoid valve 5, a control unit 8, a pressure sensor 6, water-related sensor 7, automotive electrical control system 9 and air pump current detecting unit 10, the purification device 2, the first solenoid valve 3, the air pump 4 and the second solenoid valve 5 are sequentially connected to the intake air path channel, The first solenoid valve 3 is a two-way solenoid valve, the second solenoid valve 5 being a three-way solenoid valve, the input port of the first solenoid valve 3 connects the output port of the purge apparatus 2, the first solenoid valve 3 The output of the air pump 4 is connected to the input port of the air pump 4, and the input port of the second solenoid valve 5 connects the output of the air p...

Example Embodiment

[0043] Example 2

[0044] Join image 3 with 4 The technical solution of the present invention is an automatic warning monitoring method according to the power battery pack, which includes the following steps:

[0045] S100, in response to manual control instruction or car self-test instruction, the automotive electrical control system transmits a hermetic detection signal to the control unit;

[0046] S200, acquire the output signal of the water-related sensor, the control unit determines the environment in which the air intake port of the purge apparatus is obtained; if the control unit determines that the venting port of the purge apparatus contains water vapor, the airtight detection operation of the power battery pack is ended; if control The unit judges that the intake port of the purification device does not contain water vapor, and the airtight detection operation of the power battery pack is continued;

[0047] S300, the control unit drives the first solenoid valve, the se...

Example Embodiment

[0055] Example 3

[0056] Join Figure 5 with 6 A automatic warning monitoring method of a power battery pack, which uses the above-described automatic monitoring warning system, including the following steps:

[0057] S100, in response to manual control instruction or car self-test instruction, the automotive electrical control system transmits a hermetic detection signal to the control unit;

[0058] S200, acquire the output signal of the water-related sensor, the control unit determines the environment in which the air intake port of the purge apparatus is obtained; if the control unit determines that the venting port of the purge apparatus contains water vapor, the airtight detection operation of the power battery pack is ended; if control The unit judges that the intake port of the purification device does not contain water vapor, and the airtight detection operation of the power battery pack is continued;

[0059] S300, the control unit drives the first solenoid valve, the se...

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Abstract

The invention discloses an automatic monitoring and early warning system and method for the sealing performance of a power battery pack, and the system comprises the power battery pack, a purification device, a first electromagnetic valve, an air pump, a second electromagnetic valve, a control unit, a pressure sensor, and an automobile electric control system. The purification device, the first electromagnetic valve, the air pump and the second electromagnetic valve are sequentially connected to form an air inlet channel, the second electromagnetic valve is connected with the power battery pack, the pressure sensor is arranged in the power battery pack, and the first electromagnetic valve, the air pump, the second electromagnetic valve and the pressure sensor are electrically connected with the control unit. The control unit is electrically connected with an automobile electric control system. The air tightness of the power battery pack can be effectively monitored, the monitoring period is shortened, the monitoring cost is reduced, real-time online air tightness monitoring and early warning of the power battery pack are realized, the working process is simple and convenient, the reliability is high, meanwhile, the cost for disassembling and assembling the power battery and manually measuring the air tightness of the power battery is saved, and the labor efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automatic monitoring and early warning system and monitoring method for the tightness of a power battery pack. Background technique [0002] With the rapid development of new energy vehicles, pure electric vehicles are ushering in rapid development. The power battery is one of the three batteries of pure electric vehicles and the power source of electric vehicles. In order to ensure the safe power supply of the battery system, the power battery pack must be required to have relatively Strong dustproof and waterproof capabilities, so the power battery will be tested for airtightness before it leaves the factory after production, so as to avoid the risk of short circuit caused by dust or water entering the battery pack after the power battery is installed in the car, resulting in major accidents. loss, and even threaten the personal safety of drivers and passengers. [0003...

Claims

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Application Information

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IPC IPC(8): G01M3/26G01M3/16
CPCG01M3/26G01M3/16
Inventor 张海松俞建军陈宁姚小莉姚婷吴佳斌
Owner 浙江机电职业技术学院
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