CN106840547A - A kind of batteries of electric automobile bag air-tightness detection device and detection method - Google Patents
A kind of batteries of electric automobile bag air-tightness detection device and detection method Download PDFInfo
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- CN106840547A CN106840547A CN201710201819.8A CN201710201819A CN106840547A CN 106840547 A CN106840547 A CN 106840547A CN 201710201819 A CN201710201819 A CN 201710201819A CN 106840547 A CN106840547 A CN 106840547A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
The invention discloses a kind of batteries of electric automobile bag air-tightness detection device and detection method, device part includes switch board, host computer and flow-type leak detector.Host computer and flow-type leak detector are arranged in switch board, and flow-type leak detector is connected by tracheae with battery bag internal cavity.Host computer includes a computer and a display, and computer is also configured by barcode scanning gun and printer.Computer is connected by connection with flow-type leak detector, realizes that test parameter is set, state and final result of determination show in test process.The bar code of product is entered into test software with barcode scanning gun before the test begins, test result is stored in database according to bar code.After the completion of test, printer can be printed when secondary test result.The present invention can objectively detect the sealing of batteries of electric automobile bag；Easily realize full inspection, it is ensured that product quality；Accuracy of detection is higher, truly the advantages of the sealing property of reflection batteries of electric automobile bag.
Description
Technical field
Patent of the present invention is related to a kind of air-tightness detection device, and in particular to be a kind of batteries of electric automobile bag air-tightness
Detection means and detection method.
Background technology
Electrokinetic cell bag is the sole power energy source of current pure electric automobile, used as the core of pure electric automobile
Part, the security of battery bag directly influences the security of vehicle.Battery bag should first meet electrical appliance enclosure degree of protection
IP67 design requirements are developed, and just can guarantee that battery bag seals waterproof, and battery pack will not the short circuit because of water inlet.Therefore to battery bag
Sealing waterproof just it is increasingly important, be directly connected to battery bag design success or failure.
The sealing propertytest conventional method of battery bag packaging is to try method using water, i.e., certain pressure pressure is filled with battery bag
, then be immersed in the water for battery bag or soap foam is brushed in outside, by visual observation by contracting air.But the method is difficult to automatically
Change, high is relied on to the subjective of tester, be not suitable for quality management and control and large-scale production.Another method is that battery bag is filled with one
Constant-pressure compressed air, installs pressure gauge or pressure sensor on loading line, and inflation, balance are automatically controlled by instrument
The decline of pressure in battery bag is detected after process to judge the sealing of battery bag.This method because the volume of battery bag
Greatly, the limited precision of pressure gauge or pressure sensor, so accuracy of detection is relatively low.
The content of the invention
The present invention is in view of the shortcomings of the prior art, there is provided a kind of batteries of electric automobile based on high-precision flow sensor
Bag air-tightness detection device and detection method.
A kind of batteries of electric automobile bag air-tightness detection device, including switch board, host computer and flow-type leak detector.
Described host computer and flow-type leak detector are also configured with key switch, indicate in switch board on switch board
Lamp, equipment tri coloured lantern；The on/off of key switch control device, indicator lamp and tri-colour LED indicate result of determination；
Described host computer includes display screen, keyboard and mouse, barcode scanning gun, printer and computer；Display screen, keyboard and mouse,
The connection of barcode scanning gun, printer and computer；The computer of host computer is connected with flow-type leak detector by connection；
The flow-type leak detector includes leak detector and air accumulator.
Flow-type leak detector air-channel system includes source of the gas, filtering pressure reducing valve, precise pressure-reducing valve, the first air inlet bi-bit bi-pass
Valve, air accumulator, the second air inlet two position two-way valve, flow sensor, the 3rd air inlet two position two-way valve, fast aeration bi-bit bi-pass
Valve, pressure sensor, exhaust two position two-way valve；
Source of the gas by after filtering pressure reducing valve, precise pressure-reducing valve, being inflated in air accumulator by the first air inlet two position two-way valve,
Then it is divided into two-way, fast aeration two position two-way valve is connected all the way, another road connects the second air inlet two position two-way valve；Fast aeration
The outlet side of two position two-way valve is divided into two-way, and run in gas two position two-way valve all the way, separately leads up to pressure sensor and connects tested electricity
Chi Bao；Second air inlet two position two-way valve connects the 3rd air inlet two position two-way valve, the 3rd air inlet two position two-way valve through flow sensor
Tested battery bag is connect through pressure sensor；
The control system of described air-tightness detection device includes Programmable Logic Controller, relay, valve coil, touch-screen,
Host computer, pressure sensor, flow sensor.The connection of described touch-screen, host computer and PLD signal, can compile
Journey logical device output control relay, by Control valve coil, makes gas circuit component be acted according to program setting, pressure
The value of force snesor and flow sensor reads calculation process in PLD.
A kind of detection method of batteries of electric automobile bag air-tightness detection device, the method specifically includes following steps：
Detection process includes preparing, inflate, balance, detect and being vented；
During preparation, open first and inflate two position two-way valve, close the second air inlet two position two-way valve and fast aeration two two
Port valve, gives air accumulator inflation.During inflation, close first and inflate two position two-way valve, exhaust two position two-way valve, the second air inlet two two
Port valve, the 3rd two position two-way valve, open fast aeration two position two-way valve to tested battery bag inflation；After inflation is finished, the is closed
One air inlet two position two-way valve, exhaust two position two-way valve and fast aeration two position two-way valve, open the second air inlet two position two-way valve and
3rd air inlet two position two-way valve enters equilibrium stage, waits sealing cavity pressure stabilization, closes the 3rd air inlet two position two-way valve, leads to
Over-pressed force snesor reads pressure value in battery bag, and the blowing pressure value for such as less than setting then judges there is leakage or inflation pressure
Power is not enough, otherwise into next step；Fast aeration two position two-way valve is closed, battery bag then leaks gas if there is minute leakage
The scale of construction can be mended by the gas in air accumulator by the second air inlet two position two-way valve, flow sensor and the 3rd air inlet two position two-way valve
Fill, the flow value read on flow sensor exceedes setting allows leakage rate then to judge there is leakage, and it is qualified otherwise to judge；Exhaust
In the stage, fast aeration two position two-way valve and the 3rd air inlet two position two-way valve are closed, open exhaust two position two-way valve, be tested battery bag
Interior gas is discharged by being vented two position two-way valve, and whole detection process terminates.
Beneficial effects of the present invention：The sealing of batteries of electric automobile bag can objectively be detected；Easily realize full inspection, it is ensured that
Product quality；Accuracy of detection is higher, the sealing property of true reflection batteries of electric automobile bag.
Brief description of the drawings
Fig. 1：Batteries of electric automobile bag air-tightness detection device outside drawing；
Fig. 2：Flow-type leak detector schematic diagram of gas circuit；
Fig. 3：Flow-type leak detector circuit theory diagrams.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of batteries of electric automobile bag air-tightness detection device, it is characterised in that：Including switch board 1, on
Position machine and flow-type leak detector.
Described host computer and flow-type leak detector are also configured with key switch 4, refer in switch board 1 on switch board 1
Show lamp 3, equipment tri coloured lantern 7；The on/off of the control device of key switch 4, indicator lamp 3 and tri-colour LED 7 indicate to judge knot
Really；
Described host computer includes display screen 2, keyboard and mouse 5, barcode scanning gun 9, printer 8 and computer 11；Display screen 2, key
Disk mouse 5, barcode scanning gun 9, printer 8 are connected with computer 11；The computer 11 of host computer is connected with flow-type leak detector by connection
Connect；
The flow-type leak detector includes leak detector 10 and air accumulator 6.
As shown in Fig. 2 flow-type leak detector air-channel system includes source of the gas 12, filtering pressure reducing valve 13, precise pressure-reducing valve 14, the
One air inlet two position two-way valve 15, air accumulator 22, the second air inlet two position two-way valve 16, flow sensor 22, the 3rd air inlet two two
Port valve 21, fast aeration two position two-way valve 20, pressure sensor 17, exhaust two position two-way valve 19；
Source of the gas 12 by the first air inlet two position two-way valve 15 by after filtering pressure reducing valve 13, precise pressure-reducing valve 14, being inflated to
In air accumulator 23, then it is divided into two-way, fast aeration two position two-way valve 20 is connected all the way, another road connects the second air inlet two two
Port valve 16；The outlet side of fast aeration two position two-way valve 20 is divided into two-way, and run in gas two position two-way valve 19 all the way, separately leads up to
Pressure sensor 17 connects tested battery bag 18；Second air inlet two position two-way valve 16 connects the 3rd air inlet two through flow sensor 22
Two-port valve 21, the 3rd air inlet two position two-way valve 21 connects tested battery bag 18 through pressure sensor 17；
As shown in figure 3, the control system of described air-tightness detection device include Programmable Logic Controller 25, relay 27,
Valve coil 38, touch-screen 24, host computer 26, pressure sensor 17, flow sensor 22.Described touch-screen 24, host computer 26
It is connected with the signal of PLD 25, the output control relay 27 of PLD 25 is controlled by relay 27
Valve coil 28, makes gas circuit component be acted according to program setting, and the value of pressure sensor 17 and flow sensor 22 reads can
Calculation process in programmed logic device.
A kind of detection method of batteries of electric automobile bag air-tightness detection device, the method specifically includes following steps：
Detection process includes preparing, inflate, balance, detect and being vented；
During preparation, open first and inflate two position two-way valve 15, close the second air inlet two position two-way valve 16 and fast aeration two
Position two-port valve 20, inflates to air accumulator 23.During inflation, close first and inflate two position two-way valve 15, exhaust two position two-way valve 19, the
Two air inlet two position two-way valves 16, the 3rd two position two-way valve 21, open fast aeration two position two-way valve 20 and are filled to tested battery bag 18
Gas；After inflation is finished, the first air inlet two position two-way valve 15, exhaust two position two-way valve 19 and fast aeration two position two-way valve are closed
20, open the second air inlet two position two-way valve 16 and the 3rd air inlet two position two-way valve 21 enters equilibrium stage, wait annular seal space internal pressure
Power stabilization, closes the 3rd air inlet two position two-way valve 21, and pressure value in battery bag is read by pressure sensor 17, such as less than sets
The blowing pressure value, then judge to have leakage or the blowing pressure be not enough, otherwise into next step；Close fast aeration bi-bit bi-pass
Valve 20, battery bag can be by the gas in air accumulator 23 by the second air inlet two if there is minute leakage, then gas leakage amount
Two-port valve 16, the air inlet two position two-way valve 21 of flow sensor 22 and the 3rd are supplemented, and the flow value read on flow sensor 22 surpasses
Crossing setting allows leakage rate then to judge there is leakage, and it is qualified otherwise to judge；Exhaust phase, closes fast aeration two position two-way valve 20
With the 3rd air inlet two position two-way valve 21, exhaust two position two-way valve 19 is opened, gas is by being vented bi-bit bi-pass in tested battery bag
Valve 19 is discharged, and whole detection process terminates.
The bar code of product is entered into test software with barcode scanning gun before the test begins, test result is in database
Stored according to bar code.After the completion of test, printer can be printed when secondary test result.
The present invention can also have other embodiment, the change that is carried out under without departing substantially from spirit of the invention and its real situation and
Deformation should all belong to the protection domain of the claims in the present invention.
Claims (2)
1. a kind of batteries of electric automobile bag air-tightness detection device, it is characterised in that：Including the inspection of switch board, host computer and flow-type
Leakage instrument；
Described host computer and flow-type leak detector are also configured with key switch, indicator lamp, set in switch board on switch board
Standby tri coloured lantern；The on/off of key switch control device, indicator lamp and tri-colour LED indicate result of determination；
Described host computer includes display screen, keyboard and mouse, barcode scanning gun, printer and computer；Display screen, keyboard and mouse, barcode scanning
The connection of rifle, printer and computer；The computer of host computer is connected with flow-type leak detector by connection；
The flow-type leak detector includes leak detector and air accumulator；
Flow-type leak detector air-channel system includes source of the gas, filtering pressure reducing valve, precise pressure-reducing valve, the first air inlet two position two-way valve, storage
Gas tank, the second air inlet two position two-way valve, flow sensor, the 3rd air inlet two position two-way valve, fast aeration two position two-way valve, pressure
Sensor, exhaust two position two-way valve；
Source of the gas by the first air inlet two position two-way valve by after filtering pressure reducing valve, precise pressure-reducing valve, being inflated in air accumulator, then
It is divided into two-way, fast aeration two position two-way valve is connected all the way, another road connects the second air inlet two position two-way valve；Fast aeration two
The outlet side of two-port valve is divided into two-way, and run in gas two position two-way valve all the way, separately leads up to pressure sensor and connects tested battery bag；
Second air inlet two position two-way valve connects the 3rd air inlet two position two-way valve through flow sensor, and the 3rd air inlet two position two-way valve is through pressure
Sensor connects tested battery bag；
The control system of described air-tightness detection device includes Programmable Logic Controller, relay, valve coil, touch-screen, upper
Machine, pressure sensor, flow sensor；The connection of described touch-screen, host computer and PLD signal, it is programmable to patrol
Device output control relay is collected, by Control valve coil, the value of pressure sensor and flow sensor reads can
In programmed logic device.
2. a kind of detection method of batteries of electric automobile bag air-tightness detection device according to claim 1, its feature exists
In the method specifically includes following steps：
Detection process includes preparing, inflate, balance, detect and being vented；
During preparation, open first and inflate two position two-way valve, close the second air inlet two position two-way valve and fast aeration two position two-way valve,
Give air accumulator inflation；During inflation, close first inflate two position two-way valve, exhaust two position two-way valve, the second air inlet two position two-way valve,
3rd two position two-way valve, opens fast aeration two position two-way valve to tested battery bag inflation；After inflation is finished, the first air inlet is closed
Two position two-way valve, exhaust two position two-way valve and fast aeration two position two-way valve, open the second air inlet two position two-way valve and the 3rd and enter
Gas two position two-way valve enters equilibrium stage, waits sealing cavity pressure stabilization, the 3rd air inlet two position two-way valve is closed, by pressure
Sensor reads pressure value in battery bag, and the blowing pressure value for such as less than setting then judges to have leakage or the blowing pressure is not enough,
Otherwise enter next step；Fast aeration two position two-way valve is closed, if there is minute leakage, then gas leakage amount can be by for battery bag
Gas in air accumulator is supplemented by the second air inlet two position two-way valve, flow sensor and the 3rd air inlet two position two-way valve, flow
The flow value read on sensor exceedes setting allows leakage rate then to judge there is leakage, and it is qualified otherwise to judge；Exhaust phase, closes
Fast aeration two position two-way valve and the 3rd air inlet two position two-way valve are closed, exhaust two position two-way valve is opened, gas in battery bag is tested
Discharged by being vented two position two-way valve, whole detection process terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201819.8A CN106840547A (en) | 2017-03-30 | 2017-03-30 | A kind of batteries of electric automobile bag air-tightness detection device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710201819.8A CN106840547A (en) | 2017-03-30 | 2017-03-30 | A kind of batteries of electric automobile bag air-tightness detection device and detection method |
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| CN106840547A true CN106840547A (en) | 2017-06-13 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168790A (en) * | 2017-12-28 | 2018-06-15 | 上海神力科技有限公司 | A kind of leakage detection apparatus for fuel cell pile |
| CN108168798A (en) * | 2017-12-28 | 2018-06-15 | 上海神力科技有限公司 | A kind of air-tightness detection device for fuel cell pile |
| CN108844699A (en) * | 2018-03-07 | 2018-11-20 | 福州艾弗斯智能科技有限公司 | A kind of hydrogen energy automobile pipeline self-checking unit |
| CN108956061A (en) * | 2018-10-12 | 2018-12-07 | 广州衍瀚软件有限公司 | A kind of battery case air-tightness intelligent checking system and its detection method |
| CN110440987A (en) * | 2019-03-11 | 2019-11-12 | 青岛海尔工业智能研究院有限公司 | A kind of valve body air-tightness detection method and system |
| CN112026523A (en) * | 2020-08-31 | 2020-12-04 | 蜂巢能源科技有限公司 | Battery pack sealing performance detection system and electric vehicle |
| CN112254900A (en) * | 2020-11-26 | 2021-01-22 | 东风汽车集团有限公司 | Method and device for detecting air tightness leakage point on battery pack |
| CN113008479A (en) * | 2021-02-08 | 2021-06-22 | 重庆金康动力新能源有限公司 | Method and system for monitoring sealing performance of battery pack |
| CN113588182A (en) * | 2021-07-28 | 2021-11-02 | 青岛科发高技术工程有限公司 | System for detecting air tightness of refrigerator |
| CN115127749A (en) * | 2022-06-20 | 2022-09-30 | 潍柴动力股份有限公司 | Fuel cell stack airtightness testing method and device and electronic equipment |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108168790A (en) * | 2017-12-28 | 2018-06-15 | 上海神力科技有限公司 | A kind of leakage detection apparatus for fuel cell pile |
| CN108168798A (en) * | 2017-12-28 | 2018-06-15 | 上海神力科技有限公司 | A kind of air-tightness detection device for fuel cell pile |
| CN108168798B (en) * | 2017-12-28 | 2024-06-25 | 上海神力科技有限公司 | Air tightness detection device for fuel cell stack |
| CN108844699A (en) * | 2018-03-07 | 2018-11-20 | 福州艾弗斯智能科技有限公司 | A kind of hydrogen energy automobile pipeline self-checking unit |
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| CN110440987A (en) * | 2019-03-11 | 2019-11-12 | 青岛海尔工业智能研究院有限公司 | A kind of valve body air-tightness detection method and system |
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| CN112254900A (en) * | 2020-11-26 | 2021-01-22 | 东风汽车集团有限公司 | Method and device for detecting air tightness leakage point on battery pack |
| CN113008479A (en) * | 2021-02-08 | 2021-06-22 | 重庆金康动力新能源有限公司 | Method and system for monitoring sealing performance of battery pack |
| CN113588182A (en) * | 2021-07-28 | 2021-11-02 | 青岛科发高技术工程有限公司 | System for detecting air tightness of refrigerator |
| CN115127749A (en) * | 2022-06-20 | 2022-09-30 | 潍柴动力股份有限公司 | Fuel cell stack airtightness testing method and device and electronic equipment |
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