CN108663169A - Airtight detecting apparatus and method - Google Patents
Airtight detecting apparatus and method Download PDFInfo
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- CN108663169A CN108663169A CN201710193736.9A CN201710193736A CN108663169A CN 108663169 A CN108663169 A CN 108663169A CN 201710193736 A CN201710193736 A CN 201710193736A CN 108663169 A CN108663169 A CN 108663169A
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- airtight
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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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- Examining Or Testing Airtightness (AREA)
Abstract
This disclosure relates to which a kind of airtight detecting apparatus and method, are related to detection field, which includes：First valve；The gas circuit unit being connected between first valve and the airtight test mouth of measured object, airtight detection gas flow through first valve and the gas circuit unit and are flowed into the measured object from the airtight test mouth；Pressure sensing cell detects variation of the air pressure in the first preset time in the measured object, with the air-tightness of the determination measured object after being charged the airtight detection gas and first valve closing in the measured object.It is not only at low cost, but also does not need factory origin, therefore can be applied to the air-leakage test after sale of power battery.
Description
Technical field
This disclosure relates to detection field, and in particular, to a kind of airtight detecting apparatus and method.
Background technology
Vehicle mounted dynamic battery is the energy storage device for being provided separately or assisting engine to provide power for automobile.Power battery electrode
Easily there is the phenomenon that causing because of poor sealing into water, and then short-circuit, on fire, the problems such as exploding may be caused.Therefore, on sale
In repairing afterwards, power battery is emphasis detection object.However, in order to ensure the safety of maintenance personal, it is necessary to first detect power electric
The air-tightness in pond determines whether power battery intakes.
Currently, the equipment of detection power battery air-tightness is mostly differential pressure type or direct press type leak detector.This leak detector lacks
It puts and includes：(1) expensive：(2) it requires to use plant source as detection gas and equipment dynamic source, however the shops 4S are without this
Class air source.Therefore, the disadvantages mentioned above of existing leak detector is unfavorable for it and is applied to the air-leakage test of power battery after sale.
Invention content
It is not only at low cost purpose of this disclosure is to provide a kind of airtight detecting apparatus and method, but also do not need factory
Origin, therefore the air-leakage test after sale of power battery can be applied to.
To achieve the goals above, the disclosure provides a kind of airtight detecting apparatus, including：
First valve；
The gas circuit unit being connected between first valve and the airtight test mouth of measured object, airtight detection gas flow through
First valve and the gas circuit unit and flowed into the measured object from the airtight test mouth；
Pressure sensing cell, for being charged the airtight detection gas and first valve pass in the measured object
After closing, variation of the air pressure in the first preset time in the measured object is detected, with the air-tightness of the determination measured object.
Optionally, which further includes pressure regulation unit, is more than first for the air pressure in the measured object
After presetting airtight detection atmospheric pressure value and first valve closing, the air pressure in the measured object is adjusted to described first in advance
If airtight detection atmospheric pressure value.
Optionally, the pressure regulation unit is pressure regulator valve.
Optionally, the pressure sensing cell is one of digital display manometer and pointer pressure.
Optionally, which further includes the second valve, which is arranged on the gas circuit unit
And between the pressure regulation unit and the airtight test mouth of the measured object, wherein：
In first valve and second valve closing and returning between first valve and second valve
When air pressure in road is more than the second preset pressure value, the pressure regulation unit is additionally operable to adjust the air pressure in the circuit to described the
Two preset pressure values；
The pressure sensing cell, be additionally operable to the air pressure in the circuit be adjusted to the second preset pressure value it
Afterwards, variation of the air pressure in the second preset time in the circuit is detected, with the air-tightness of the determination airtight detecting apparatus.
Optionally, the airtight detecting apparatus further includes inflation unit, for via first valve to the gas circuit
It is inflated in unit.
Optionally, the measured object is power battery.
The embodiment of the present disclosure also provides a kind of airtight detection method, which includes：
Via the first valve and the gas circuit unit being connected between first valve and the airtight test mouth of measured object, to
Airtight detection gas are filled in the measured object；
It is charged in the measured object after the airtight detection gas and first valve closing, detects the quilt
Variation of the air pressure in object in the first preset time is surveyed, with the air-tightness of the determination measured object.
Optionally, which further includes：
Air pressure in the measured object is more than after the first default airtight detection atmospheric pressure value and first valve closing,
The air pressure in the measured object is adjusted to described first using pressure regulation unit and presets airtight detection atmospheric pressure value.
Optionally, which further includes：
It closes and is arranged on the gas circuit unit and positioned at the airtight test mouth of the pressure regulation unit and the measured object
Between the second valve；
The airtight detection gas are filled with into the gas circuit unit via first valve；
When the air pressure in circuit between first valve and second valve is more than the second preset pressure value, close
Close first valve：
Using the pressure regulation unit by the air pressure in the circuit between first valve and second valve adjust to
The second preset pressure value；
Detect change of the air pressure in the circuit between first valve and second valve in the second preset time
Change, with the air-tightness of the determination airtight detecting apparatus.
By using above-mentioned technical proposal, due to including only the first valve according to the airtight detecting apparatus of the embodiment of the present disclosure
Door, gas circuit unit and pressure sensing cell these three components, therefore its structure is very simple, can not only reduce airtight detection and set
Standby cost, but also enable to airtight detecting apparatus that there is portability, in addition work is not needed yet when carrying out airtight detection
Factory originates from, and is highly suitable for power battery and other air-leakage tests after sale for needing to carry out the equipment of air-leakage test.Separately
Outside, the quantity of the vulnerable part of the airtight detecting apparatus is considerably less, therefore the maintenance cost of its own is also very low.
Other feature and advantage of the disclosure will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is for providing further understanding of the disclosure, and a part for constitution instruction, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings：
Fig. 1 is according to a kind of schematic block diagram of the airtight detecting apparatus of embodiment of the disclosure.
Fig. 2 is the schematic block diagram according to the airtight detecting apparatus of the another embodiment of the disclosure.
Fig. 3 is the schematic block diagram according to the airtight detecting apparatus of the another embodiment of the disclosure.
Fig. 4 is according to a kind of airtight overhaul flow chart of the airtight detecting apparatus of embodiment of the disclosure.
Fig. 5 schematically illustrates the change of pressure that pressure sensing cell in testing process shown in Fig. 4 detects at any time
Change schematic diagram.
Fig. 6 is the flow chart according to a kind of airtight detection method of embodiment of the disclosure.
Specific implementation mode
The specific implementation mode of the disclosure is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
According to a kind of embodiment of the disclosure, a kind of airtight detecting apparatus is provided.As shown in Figure 1, the airtight detecting apparatus
100 include：
First valve 10；
The gas circuit unit 20 being connected between first valve 10 and the airtight test mouth of measured object 200, airtight detection
Gas flows through first valve 10 and the gas circuit unit 20 and is flowed into the measured object 200 from the airtight test mouth；
Pressure sensing cell 30, for being charged the airtight detection gas and described first in the measured object 200
After valve 10 is closed, variation of the air pressure in the first preset time in the measured object 200 is detected, it is described tested with determination
The air-tightness of object 200.
Wherein, if measured object 200 is power battery, airtight test mouth can be the waterproof vent valve of power battery.
By using above-mentioned technical proposal, due to including only the first valve according to the airtight detecting apparatus of the embodiment of the present disclosure
Door 10, gas circuit unit 20 and pressure sensing cell 30 these three components, therefore its structure is very simple, can not only reduce airtight
The cost of detection device, but also enable to airtight detecting apparatus that there is portability, in addition also not when carrying out airtight detection
It needs factory to originate from, is highly suitable for power battery and other inspections of air-tightness after sale for needing to carry out the equipment of air-leakage test
It surveys.In addition, the quantity of the vulnerable part of the airtight detecting apparatus is considerably less, therefore the maintenance cost of its own is also very low.
In a kind of possible embodiment, pressure sensing cell 30 can be in digital display manometer and pointer pressure
One of.
If the requirement of air-leakage test precision is relatively high, preferably use digital display manometer as pressure sensing cell 30.
Furthermore it is also possible to it is preferable to use the digital display manometer with clocking capability, wears self-timing and preserve the function of numerical value, because
This can be while reaching airtight testing goal, additionally it is possible to which the workload for reducing testing staff avoids human error.
If air-leakage test precision is of less demanding, pointer pressure can be used as pressure sensing cell 30,
But since the structure of pointer pressure is diaphragm structure, pointer pressure can have deviation after a period of use
Risk, need periodically to correct.
Furthermore it is possible to select suitable pressure gauge according to actual pressure detecting required precision.For example, work can be selected
As the digital display manometer that pressure is 20KPa, pressure detecting precision is 1Pa.
By improving the accuracy of detection of pressure sensing cell 30, enable to be set according to the airtight detection of the embodiment of the present disclosure
Standby 100 airtight accuracy of detection improves, and increases the confidence level of airtight testing result.
In a kind of possible embodiment, as shown in Fig. 2, also according to the airtight detecting apparatus 100 of the embodiment of the present disclosure
May include pressure regulation unit 40, being more than first for the air pressure in the measured object 200 presets airtight detection atmospheric pressure value and institute
After stating the closing of the first valve 10, the air pressure in the measured object 200 is adjusted to described first and presets airtight detection atmospheric pressure value.
Furthermore it is possible to be required according to actual regulation precision to select pressure regulation unit 40.For example, operating pressure can be selected
Pressure regulation unit for 80KPa, regulation precision more than 1Pa carries out pressure regulation.
In addition, pressure regulation unit 40 can be pressure regulator valve or other can be to equipment that pressure is adjusted.
By using above-mentioned technical proposal, due to when carrying out air-leakage test to measured object 200, it will usually first to tested
Object 200 is inflated so that the air pressure in it is higher than preset airtight detection atmospheric pressure value, then using the progress air pressure tune of pressure regulation unit 40
It is whole so that the air pressure in measured object 200 reaches preset airtight detection atmospheric pressure value, then observes measured object over time, become
Whether the air pressure in 200 reduces, and illustrates that the air-tightness of measured object 200 is bad if reducing.By using pressure regulation unit 40 to quilt
The air pressure surveyed in object 200 is adjusted, and can avoid the pressure of the pressure sensing cell 30 at quarter at the beginning of one section of observing time
Power reading value is inaccurate, so that the air-leakage test result of measured object 200 is more accurate.
In a kind of possible embodiment, as shown in figure 3, airtight detecting apparatus can also include according to this embodiment
Second valve 50, second valve 50 are arranged on the gas circuit unit 20 and are tested with described positioned at the pressure regulation unit 40
Between the airtight test mouth of object 200, wherein：
In first valve 10 and second valve 50 closing and first valve 10 and second valve 50
Between circuit in air pressure be more than the second preset pressure value when, the pressure regulation unit 40 is additionally operable to the air pressure tune in the circuit
The second preset pressure value；
The pressure sensing cell 30 is additionally operable to the air pressure in the circuit and is adjusted to the second preset pressure value
Later, variation of the air pressure in the second preset time in the circuit is detected, with the airtight of the determination airtight detecting apparatus
Property.
By using above-mentioned technical proposal, can be carried out according to this public affairs before carrying out air-leakage test to measured object 200
Open the air-tightness self-test of the airtight detecting apparatus 100 of embodiment.For example, when carrying out air-tightness self-test, the second valve is first closed
50, it is then inflated into gas circuit unit 20 by the first valve 10, when the air pressure in gas circuit unit is more than the second preset pressure value
Later, the first valve 10 is closed, it then will be in the circuit between the first valve 10 and the second valve 50 using pressure regulation unit 40
Air pressure adjusts to equal than the second preset pressure value, then observes the air pressure that pressure sensing cell 30 detects in a period of time and becomes
Change, it will be able to determine the air-tightness of itself of airtight detecting apparatus 100.And by the self-test of airtight detecting apparatus 100, eliminate by
The systematic error when air-leakage test of object 200 is surveyed, the precision of airtight detection is further improved.
In a kind of possible embodiment, as shown in figure 3, also according to the airtight detecting apparatus 100 of the embodiment of the present disclosure
May include inflation unit 60, for being inflated into the gas circuit unit 20 via first valve 10.In this way, it is possible to real
The air-leakage test of the detection and measured object 200 of existing airtight detecting apparatus itself air-tightness.
Wherein, inflation unit 60 can be easy inflator or other setting of being inflated into gas circuit unit 200
It is standby.Moreover, the pressure limit of inflation unit 60 can carry range according to the air pressure of measured object 200 and select, for example, inflation is single
The pressure limit of member can be 1-80KPa.Therefore, plant source is not needed according to the airtight detecting apparatus of the embodiment of the present disclosure,
The air-leakage test of measured object 200 can easily be carried out.
In addition, the first valve 10 and the second valve 50 can be manually-operated gates, can also be electrically operated valve or pneumatic operated valve
Door.The embodiment of the present disclosure is not restricted this.Moreover, the joint dimension and first between the second valve 50 and airtight test mouth
Joint dimension between valve 10 and inflation unit 60 can be according to the first valve 10, the second valve 50 and inflation unit 60
Actual interface size selects.
In addition, according to the airtight detecting apparatus 100 of the embodiment of the present disclosure airtight inspection can be carried out to various equipment
It surveys, such as airtight detection is carried out more than the measured object of 20KPa to carrying pressure.In addition, according to the airtight inspection of the embodiment of the present disclosure
Measurement equipment 100 can be located at the equal no requirement (NR)s such as material, the net volume range of measured object 200, such as the net volume of measured object 200
In the range of 0.1L-200L.
Below in conjunction with air tightness detection equipment 100 shown in Fig. 3, the airtight inspection according to the embodiment of the present disclosure is described in detail
Measurement equipment 100 is from air-tightness self-test to the detailed process of measured object air-leakage test.Fig. 4 shows the exemplary flow of the flow
Figure.In addition, Fig. 5 schematically illustrates pressure sensing cell 30 detects in testing process shown in Fig. 4 pressure at any time
Change schematic diagram.
In step S401, the second valve 50 is closed.
In step S402, airtight detection gas are filled with into gas circuit unit 20 by the first valve 10, until gas circuit list
Pressure in member 20 is more than the second preset pressure value P2.In this step, micro airtight detection gas can be slowly filled with, and
And in order to increase the portability of airtight detecting apparatus 100, the pipeline space of gas circuit unit 20 is usually smaller, therefore gas flow is unsuitable
It is excessive.
In step S403, the first valve 10 is closed.
In step s 404, pressure regulation unit 40 adjusts the air pressure in the circuit between the first valve 10 and the second valve 50
To the second preset pressure value P2.
In step S405, start the second preset time t of timing 2.
In step S406, after the second preset time t 2, pressure sensing cell 30 detects the first valve 10 and the second valve
The air pressure in circuit between door 50 is P3.
In step S 407, the airtight testing result of airtight detecting apparatus 100 itself is obtained, namely judges (P2-P3)/P2
Whether be less than the preset percentage of the first preset pressure value, such as 1 ‰, if it is less than then think airtight detecting apparatus 100 from
Body air-tightness is good, and goes to step S409, and step S408 is gone to if being not less than.
In step S408, finds the leak source of airtight detecting apparatus 100 and repair.
So far, by step S401 to S408, airtight detecting apparatus 100 air-leakage test of itself is just completed.
Then, in step S409, the second valve 50 is connected to the airtight test mouth of measured object 200, by the first valve
10 are connected to inflation unit 60, and start to inflate into measured object 200.Wherein, in this step, the second valve can be confirmed
Whether connected well between door 50 and airtight test mouth and between more than 10 inflation unit 60 of the first valve, such as can be into gas circuit
It is passed through certain gas, suds is smeared to the joint between measured object 200 and gas circuit unit 20, has seen whether bubble production
It is raw, if nothing, prove that air-tightness is good.
In step S410, the air pressure in gas circuit unit 20 is more than after the first default airtight detection atmospheric pressure value P1, closes
Close the first valve 10.For example, the first default airtight detection atmospheric pressure value can be such as 7KPa, in this case, shown in Fig. 5
Inflationtime t4 it is bigger, airtight test result is more accurate.Because if aeration speed is excessive, measured object and gas circuit list are easily caused
There is certain Wen Sheng in joint between member 20, and P1=7KPa belongs to lower pressure, and testing result is very sensitive to temperature, carefully
The registration jump that micro- temperature change may result in digital display manometer is indefinite, and then leads to the poor repeatability of testing result, leak rate
Value is inaccurate.
In step S411, pressure regulation unit 40 adjusts the air pressure in gas circuit unit 20 to equal than first presets airtight detection
Atmospheric pressure value P1.
In step S412, after the first preset time t 1, pressure sensing cell 30 detects the pressure in gas circuit unit 20
Force value is P4.
In step S413, determine that the leak rate value of measured object 200 is (P1-P4)/t1.
By step S409 to S413, the air-leakage test of measured object 200 is just completed.
By flow chart shown in Fig. 4, it can be seen that according to the air-tightness of the airtight detecting apparatus 100 of the embodiment of the present disclosure
Detection time is very short.And the airtight detection time of existing differential pressure type or direct press type leak detector is usually 6-20 minutes, because
The advantages of this is also equipped with quick airtight detection according to the airtight detecting apparatus 100 of the embodiment of the present disclosure.
According to the another embodiment of the disclosure, a kind of airtight detection method is improved, as shown in fig. 6, the airtight detection method
Including：
S601, via the first valve and the gas circuit list being connected between first valve and the airtight test mouth of measured object
Member is filled with airtight detection gas into the measured object；
S602, it is charged in the measured object after the airtight detection gas and first valve closing, detection
Variation of the air pressure in the first preset time in the measured object, with the air-tightness of the determination measured object.
By using above-mentioned technical proposal, due to according to the airtight detection method of the embodiment of the present disclosure just with the first valve
Door, gas circuit unit and the airtight detection of pressure sensing cell these three components progress, therefore the cost of airtight detection can be reduced,
Factory origin is not needed when carrying out airtight detection, is highly suitable for power battery and other need to carry out air-leakage test yet
The air-leakage test after sale of equipment.
In a kind of possible embodiment, can also include according to the airtight detection method of the embodiment of the present disclosure：Institute
It states the air pressure in measured object to be more than after the first default airtight detection atmospheric pressure value and first valve closing, utilizes pressure regulation unit
Air pressure in the measured object is adjusted to described first and presets airtight detection atmospheric pressure value.
By using above-mentioned technical proposal, due to when carrying out air-leakage test to measured object, it will usually first to measured object
It inflates so that the air pressure in it is higher than preset airtight detection atmospheric pressure value, then using the progress air pressure adjustment of pressure regulation unit so that
Air pressure in measured object reaches preset airtight detection atmospheric pressure value, and the air pressure then observed in measured object over time, become is
No reduction illustrates that the air-tightness of measured object is bad if reducing.The air pressure in measured object is adjusted by using pressure regulation unit
It is whole, the pressure reading value of the pressure sensing cell at quarter at the beginning of one section of observing time can be avoided inaccurate, so as to
Enough so that the air-leakage test result of measured object is more accurate.
In a kind of possible embodiment, can also include according to the airtight detection method of the embodiment of the present disclosure：It closes
It is arranged on the second valve on the gas circuit unit and between the pressure regulation unit and the airtight test mouth of the measured object
Door；The airtight detection gas are filled with into the gas circuit unit via first valve；In first valve and described
When the air pressure in circuit between second valve is more than the second preset pressure value, first valve is closed：Utilize the pressure regulation
Unit adjusts the air pressure in the circuit between first valve and second valve to the second preset pressure value；Inspection
Variation of the air pressure in the circuit between first valve and second valve in the second preset time is surveyed, to determine
State the air-tightness of airtight detecting apparatus.
By using above-mentioned technical proposal, air-tightness self-test can be carried out before carrying out air-leakage test to measured object.
The systematic error when air-leakage test of measured object is eliminated, the precision of airtight detection is further improved.
The specific implementation mode of each step included by airtight detection method according to the embodiment of the present disclosure is in root
According to being described in detail in the airtight detecting apparatus of the embodiment of the present disclosure, details are not described herein again.
The preferred embodiment of the disclosure is described in detail above in association with attached drawing, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection domain of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the disclosure to it is various can
The combination of energy no longer separately illustrates.
In addition, arbitrary combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (10)
1. a kind of airtight detecting apparatus, which is characterized in that the airtight detecting apparatus includes：
First valve；
The gas circuit unit being connected between first valve and the airtight test mouth of measured object, airtight detection gas flow through described
First valve and the gas circuit unit and flowed into the measured object from the airtight test mouth；
Pressure sensing cell, for being charged the airtight detection gas in the measured object and first valve closes it
Afterwards, variation of the air pressure in the first preset time in the measured object is detected, with the air-tightness of the determination measured object.
2. airtight detecting apparatus according to claim 1, which is characterized in that the airtight detecting apparatus further includes pressure regulation list
Member, after being more than the first default airtight detection atmospheric pressure value and first valve closing for the air pressure in the measured object,
Air pressure in the measured object is adjusted to described first and presets airtight detection atmospheric pressure value.
3. airtight detecting apparatus according to claim 2, which is characterized in that the pressure regulation unit is pressure regulator valve.
4. airtight detecting apparatus according to claim 1, which is characterized in that the pressure sensing cell is digital display manometer
One of with pointer pressure.
5. airtight detecting apparatus according to claim 2, which is characterized in that the airtight detecting apparatus further includes the second valve
Door, second valve are arranged on the airtight test mouth on the gas circuit unit and positioned at the pressure regulation unit and the measured object
Between, wherein：
It is closed in first valve and second valve and in the circuit between first valve and second valve
Air pressure when being more than the second preset pressure value, the pressure regulation unit is additionally operable to adjust the air pressure in the circuit to described second pre-
If atmospheric pressure value；
The pressure sensing cell is additionally operable to the air pressure in the circuit and is adjusted to after the second preset pressure value,
Variation of the air pressure in the second preset time in the circuit is detected, with the air-tightness of the determination airtight detecting apparatus.
6. the airtight detecting apparatus according to any claim in claim 1 to 5, which is characterized in that the airtight inspection
Measurement equipment further includes inflation unit, for being inflated into the gas circuit unit via first valve.
7. airtight detecting apparatus according to claim 1, which is characterized in that the measured object is power battery.
8. a kind of airtight detection method, which is characterized in that the airtight detection method includes：
Via the first valve and the gas circuit unit being connected between first valve and the airtight test mouth of measured object, to described
Airtight detection gas are filled in measured object；
It is charged in the measured object after the airtight detection gas and first valve closing, detects the measured object
Variation of the interior air pressure in the first preset time, with the air-tightness of the determination measured object.
9. airtight detection method according to claim 8, which is characterized in that the airtight detection method further includes：
Air pressure in the measured object is more than after the first default airtight detection atmospheric pressure value and first valve closing, utilizes
Air pressure in the measured object is adjusted to described first and presets airtight detection atmospheric pressure value by pressure regulation unit.
10. airtight detection method according to claim 9, which is characterized in that the airtight detection method further includes：
Closing is arranged on the gas circuit unit and between the pressure regulation unit and the airtight test mouth of the measured object
The second valve；
The airtight detection gas are filled with into the gas circuit unit via first valve；
When the air pressure in circuit between first valve and second valve is more than the second preset pressure value, institute is closed
State the first valve：
The air pressure in the circuit between first valve and second valve is adjusted to described using the pressure regulation unit
Second preset pressure value；
Variation of the air pressure in the circuit between first valve and second valve in the second preset time is detected, with
Determine the air-tightness of the airtight detecting apparatus.
Priority Applications (1)
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|---|---|---|---|
| CN201710193736.9A CN108663169A (en) | 2017-03-28 | 2017-03-28 | Airtight detecting apparatus and method |
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|---|---|---|---|
| CN201710193736.9A CN108663169A (en) | 2017-03-28 | 2017-03-28 | Airtight detecting apparatus and method |
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| CN201710193736.9A Pending CN108663169A (en) | 2017-03-28 | 2017-03-28 | Airtight detecting apparatus and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112026583A (en) * | 2019-06-03 | 2020-12-04 | 北汽福田汽车股份有限公司 | Method and system for detecting battery pack and vehicle |
| CN114518207A (en) * | 2022-01-17 | 2022-05-20 | 纬景储能科技有限公司 | Leakage detection device and method for flow battery ion exchange membrane |
| CN114646433A (en) * | 2021-08-11 | 2022-06-21 | 宇通客车股份有限公司 | Vehicle and air tightness detection method of battery pack of vehicle |
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| CN204241173U (en) * | 2014-09-16 | 2015-04-01 | 光宝电子(广州)有限公司 | The airtight leak-checking apparatus of pressure-decreasing type |
| CN204085807U (en) * | 2014-09-24 | 2015-01-07 | 重庆市港腾塑胶有限公司 | A kind of machine oil composite pipe tightness detecting device |
| CN204330243U (en) * | 2014-12-17 | 2015-05-13 | 平顶山市安泰华矿用安全设备制造有限公司 | A kind of borehole sealing pick-up unit |
| CN105352677A (en) * | 2015-11-18 | 2016-02-24 | 重庆长安汽车股份有限公司 | Sealing testing apparatus of power battery pack |
| CN106338370A (en) * | 2016-08-30 | 2017-01-18 | 江苏风和医疗器材有限公司 | Airtightness detector for puncturing device |
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| CN112026583A (en) * | 2019-06-03 | 2020-12-04 | 北汽福田汽车股份有限公司 | Method and system for detecting battery pack and vehicle |
| CN114646433A (en) * | 2021-08-11 | 2022-06-21 | 宇通客车股份有限公司 | Vehicle and air tightness detection method of battery pack of vehicle |
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