CN113390981A - Storage battery gassing test equipment and method - Google Patents
Storage battery gassing test equipment and method Download PDFInfo
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- CN113390981A CN113390981A CN202110565654.9A CN202110565654A CN113390981A CN 113390981 A CN113390981 A CN 113390981A CN 202110565654 A CN202110565654 A CN 202110565654A CN 113390981 A CN113390981 A CN 113390981A
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000004868 gas analysis Methods 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 50
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000011179 visual inspection Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F19/00—Calibrated capacity measures for fluids or fluent solid material, e.g. measuring cups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention provides a storage battery gassing test device which comprises a machine body, wherein an air inlet hole is formed in the machine body, and a water storage tank and a compressor are installed in the machine body; the gas analysis device is characterized in that a measuring cylinder is arranged in the water storage tank, a first pipeline is installed at the inner end of the gas inlet, the first end of the first pipeline is connected with the gas inlet, the second end of the first pipeline is connected with the measuring cylinder, a flowmeter is arranged on the first pipeline, a first electronic valve is arranged at the input end of the water storage tank, a second electronic valve is arranged at the joint of the compressor and the first pipeline, the gas analysis device can detect the sealing performance, the voltage, the gas evolution rate and the total gas evolution quantity of the storage battery, analyzes the gas quality of the evolved gas and displays the detection result in real time, the detection efficiency is improved, and the automation of test detection is realized.
Description
Technical Field
The invention relates to the technical field of storage battery detection, in particular to storage battery gassing test equipment and a storage battery gassing test method.
Background
In the charging process of the lead-acid storage battery, oxygen can be separated out at the positive electrode due to the existence of overpotential, hydrogen is separated out at the negative electrode, and the oxygen diffuses to the negative plate from the gap of the partition plate to carry out oxygen recombination reaction with the separated hydrogen and then release heat. However, when the charging current is large and the charging voltage is high, the gas generated in the later charging period of the storage battery cannot be compositely reduced into water in the storage battery in time, and the pressure of the gas formed in the storage battery exceeds the opening pressure of the exhaust valve, so that the storage battery is seriously dehydrated. The acid density in the storage battery is continuously improved, the normal performance of the storage battery is influenced, and the service life of the storage battery is shortened.
It is therefore necessary to consider the gassing effect of this method on the accumulator when designing a charging method. In the past, when a storage battery is subjected to a gassing test, a measuring cylinder is generally used for carrying out a degassing method measurement because no specific gassing test equipment exists, but the standardization and normalization cannot be carried out in many details, and the test result cannot be guaranteed.
Therefore, improvements are needed.
Disclosure of Invention
The invention aims to provide storage battery gassing test equipment and a storage battery gassing test method, which can be used for detecting the sealing property, the voltage, the gassing rate and the total gassing amount of a storage battery, analyzing the gas quality of the separated gas and displaying the detection result in real time.
In order to achieve the purpose, the invention provides storage battery gassing test equipment on one hand, which comprises a machine body, wherein an air inlet hole is formed in the machine body, and a water storage tank and a compressor are installed in the machine body;
the air inlet is arranged at the inner end of the air inlet hole, the first end of the first pipeline is connected with the air inlet hole, the second end of the first pipeline is connected with the measuring cylinder, the first pipeline is provided with a flow meter, the input end of the water storage tank is provided with a first electronic valve, and the joint of the compressor and the first pipeline is provided with a second electronic valve.
In a further technical scheme, a first collecting hole and a second collecting hole are formed in the machine body.
In a further technical scheme, a display screen for displaying test data is arranged on the machine body.
In a further technical scheme, install gas chromatograph in the organism, install the gasbag in the gas chromatograph, the second pipeline is installed at the top of graduated flask, the first end of second pipeline with the graduated flask is connected, the second end of second pipeline with the gasbag is connected, install the third electronic valve on the second pipeline, the third pipeline is installed to the gasbag, the first end of third pipeline with the gasbag is connected, the second end of third pipeline with the compressor is connected.
In a further technical scheme, a display bar for displaying the graduations of the measuring cylinder is arranged on the outer side of the machine body.
In a further technical scheme, a device water tank is arranged in the water storage tank and connected with the third pipeline, a fourth electronic valve is arranged between the device water tank and the third pipeline, and a fourth pipeline is arranged between the device water tank and the compressor.
In a further technical scheme, an outlet valve is arranged at the output end of the water preparing tank, and an outlet of the outlet valve is communicated with the water storage tank.
The invention provides a detection method for a storage battery gassing test, which applies storage battery gassing test equipment and comprises the following steps:
s1: sealing the storage battery, reserving an air outlet pipeline, inserting the air outlet pipeline into the air inlet hole, starting an air tightness detection program in the display screen, closing the first electronic valve by the equipment, opening the second electronic valve, pressurizing the storage battery by the compressor through the flow meter, stopping pressurizing when the air pressure reaches a set pressure, closing the second electronic valve by the equipment, maintaining for a certain time, and indicating that the air tightness of the storage battery is qualified if the air pressure displayed by the flow meter does not obviously change, so that a subsequent test can be carried out;
s2: gas precipitated by the storage battery enters the measuring cylinder after passing through the flowmeter and the first electronic valve, the flowmeter records gas precipitation in real time, the average gas precipitation amount per 5S is used as the precipitation rate, the gas precipitation rate and the total gas precipitation amount are displayed on the display screen, when the gas precipitation rate is 0 for 10 continuous times, the test is judged to be finished, a test finishing button is clicked on the display screen, and the system automatically stores data such as voltage values, gas precipitation amounts and the like in each time unit in the test;
s3: and clicking the gas analysis in the display screen, automatically opening a third electronic valve at the top of the measuring cylinder by the system, enabling the gas to enter the air bag along with the negative pressure through a second pipeline, analyzing the gas in the air bag by the gas chromatograph, and displaying the detection result on the display screen.
In a further technical scheme, the step S2 includes a step of preparing the water level of the measuring cylinder, the measuring cylinder is filled with water and placed in the water tank upside down, the third electronic valve is closed, the fourth electronic valve is opened, the compressor extracts air in the water tank, so that air pressure in the measuring cylinder and the water tank is reduced, redundant air enters the compressor, water outside the measuring cylinder enters the measuring cylinder, and the water level of the measuring cylinder is adjusted to 0 scale.
In a further technical solution, the step S3 includes before the gas analysis, the compressor pumping out the gas in the air bag to form a negative pressure.
Compared with the prior art, the invention has the following technical effects: the storage battery gassing test equipment and the method can detect the sealing performance, the voltage, the gassing rate and the total gassing amount of the storage battery, analyze the gas quality of the evolved gas and display the detection result in real time, improve the detection efficiency and realize the automation of test detection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of the present invention.
Wherein: 1-machine body, 2-air inlet hole, 3-water storage tank, 4-compressor, 5-graduated cylinder, 6-first pipeline, 7-flowmeter, 8-first electronic valve, 9-second electronic valve, 10-display screen, 11-first collecting hole, 12-second collecting hole, 13-gas chromatograph, 14-air bag, 15-second pipeline, 16-third electronic valve, 17-third pipeline, 18-display bar, 19-water preparation tank, 20-fourth electronic valve, 21-fourth pipeline and 22-water outlet valve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example one
Please refer to FIG. 1
A storage battery gassing test device comprises a machine body 1, wherein an air inlet hole 2 is formed in the machine body 1, and a water storage tank 3 and a compressor 4 are installed in the machine body 1;
the air inlet type water storage tank is characterized in that a measuring cylinder 5 is arranged in the water storage tank 3, a first pipeline 6 is installed at the inner end of the air inlet 2, the first end of the first pipeline 6 is connected with the air inlet 2, the second end of the first pipeline 6 is connected with the measuring cylinder 5, a flowmeter 7 is arranged on the first pipeline 6, a first electronic valve 8 is arranged at the input end of the water storage tank 3, and a second electronic valve 9 is arranged at the joint of the compressor 4 and the first pipeline 6.
In other specific embodiments, the machine body 1 is provided with a display screen 10 for displaying test data.
The air inlet hole 2 and the compressor 4 are used for detecting the sealing performance of the storage battery, the compressor 4 is used for pressurizing the storage battery at a stable certain pressure through the flow meter 7, when the air pressure reaches a specified pressure, the pressurization is stopped, the air pressure is maintained for a certain time, and if the air pressure displayed by the flow meter 7 does not change obviously, the sealing performance of the storage battery is qualified. The gassing rate of the accumulator is detected by the compressor 4 and the graduated cylinder 5, and the data is displayed on the display screen 10 in real time as well as the total gassing rate.
In other embodiments, the body 1 is provided with a first collecting hole 11 and a second collecting hole 12. The voltage of the storage battery is detected through the first collecting hole 11 and the second collecting hole 12, the voltage of the storage battery is collected and recorded in real time, and the result is displayed in the display screen 10.
In another specific embodiment, a gas chromatograph 13 is installed in the machine body 1, an air bag 14 is installed in the gas chromatograph 13, a second pipeline 15 is installed at the top of the measuring cylinder 5, a first end of the second pipeline 15 is connected with the measuring cylinder 5, a second end of the second pipeline 15 is connected with the air bag 14, a third electronic valve 16 is installed on the second pipeline 15, a third pipeline 17 is installed on the air bag 14, a first end of the third pipeline 17 is connected with the air bag 14, and a second end of the third pipeline 17 is connected with the compressor 4.
The gas quality of the precipitated gas is analyzed by the gas bag 14, the gas chromatograph 13, and the compressor 4, the compressor 4 evacuates the gas in the gas bag 14, the gas in the measuring cylinder 5 is sucked into the gas bag 14 through the second pipe 15, and the gas chromatograph 13 analyzes the gas.
In other specific embodiments, a display bar 18 for displaying the scale of the measuring cylinder 5 is arranged on the outer side of the machine body 1. The water quantity in the measuring cylinder 5 can be directly observed through the display strip 18, and when the water quantity in the measuring cylinder 5 is not enough, the pressure in the measuring cylinder 5 is reduced through the compressor 4, and the water outside the water storage tank 3 is sucked into the measuring cylinder 5 for supplement.
In another embodiment, an equipment water tank 19 is disposed in the water storage tank 3, the equipment water tank 19 is connected to the third pipeline 17, a fourth electronic valve 20 is disposed between the equipment water tank 19 and the third pipeline 17, and a fourth pipeline 21 is disposed between the equipment water tank 19 and the compressor 4. When the water in the measuring cylinder 5 is too little, the compressor 4 sucks air in the measuring cylinder 5 through the third pipeline 17 and the second pipeline 15, the pressure in the measuring cylinder 5 is reduced, water in the water storage tank 3 enters the measuring cylinder 5 for replenishment, and the air in the measuring cylinder 5 enters the compressor 4 through the water preparation tank 19, so that the water entering of the compressor 4 is avoided.
In other embodiments, the output end of the water preparing tank 19 is provided with a water outlet valve 22, and the output end of the water outlet valve 22 is communicated with the water storage tank 3. The water reservoir 3 can be replenished with water via the water reservoir 19.
Example two
Please refer to FIG. 1
The invention also provides a detection method for the storage battery gassing test, which applies storage battery gassing test equipment and comprises the following steps:
s1: sealing the storage battery, reserving an air outlet pipeline, inserting the air outlet pipeline into the air inlet hole 2, starting an air tightness detection program in the display screen 10, closing the first electronic valve 8 by the equipment, opening the second electronic valve 9, pressurizing the storage battery by the compressor 4 through the flow meter 7, stopping pressurizing when the air pressure reaches a set pressure, closing the second electronic valve 9 by the equipment, maintaining for a certain time, and indicating that the air tightness of the storage battery is qualified if the air pressure displayed by the flow meter 7 does not obviously change, so that subsequent tests can be carried out;
s2: gas precipitated by the storage battery enters the measuring cylinder 5 after passing through the flowmeter 7 and the first electronic valve 8, the flowmeter 7 records the gas precipitation amount in real time, the average gas precipitation amount per 5S is taken as the precipitation rate, the precipitation rate and the total gas precipitation amount are displayed on the display screen 10, when the gas precipitation rate is 0 for 10 continuous times, the test is judged to be finished, the test finishing button is clicked on the display screen 10, and the system automatically stores data such as voltage value, gas precipitation amount and the like in each time unit in the test;
s3: and clicking the gas analysis in the display screen 10, automatically opening a third electronic valve 16 at the top of the measuring cylinder 5 by the system, enabling the gas to enter the air bag 14 through a second pipeline 15 along with the negative pressure, analyzing the gas in the air bag 14 by the gas chromatograph 13, and displaying the detection result on the display screen 10.
In another specific embodiment, the S2 includes a step of preparing the water level of the measuring cylinder 5, in which the measuring cylinder 5 is filled with water and placed in the water tank upside down, the third electronic valve 16 is closed, the fourth electronic valve 20 is opened, the compressor 4 pumps the air in the water tank 19, the air pressure in the measuring cylinder 5 and the water tank 19 is reduced, the excess air enters the compressor 4, the water outside the measuring cylinder 5 enters the measuring cylinder 5, and the water level of the measuring cylinder 5 is adjusted to 0 scale.
In other embodiments, S3 includes the compressor 4 drawing the gas in the bladder 14 to form a negative pressure before analyzing the gas.
Most of the existing gassing tests adopt a drainage method for manual detection, and interval gassing amount needs to be recorded by manual visual inspection. However, the error of manual visual inspection is huge, especially when the gas evolution amount is large, people can adopt a measuring cylinder 5 with a large range to collect gas, the accuracy is reduced when the range of the measuring cylinder 5 is increased, and the uncertain value of the scale value of the measuring cylinder 5 manually visual inspection cannot be controlled because of the rapid generation of gas.
The invention can automatically record the gas evolution rate and the gas evolution quantity from the equipment before the test and the whole gas evolution experiment process, and automatically collect the gas after the test for analysis so as to test and detect the automation.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a battery gassing test equipment which characterized in that: the air inlet hole is formed in the machine body, and a water storage tank and a compressor are installed in the machine body;
the air inlet is arranged at the inner end of the air inlet hole, the first end of the first pipeline is connected with the air inlet hole, the second end of the first pipeline is connected with the measuring cylinder, the first pipeline is provided with a flow meter, the input end of the water storage tank is provided with a first electronic valve, and the joint of the compressor and the first pipeline is provided with a second electronic valve.
2. A battery gassing test apparatus according to claim 1 wherein: a first collecting hole and a second collecting hole are formed in the machine body.
3. A battery gassing test apparatus according to claim 1 wherein: and the machine body is provided with a display screen for displaying test data.
4. A battery gassing test apparatus according to claim 1 wherein: install gas chromatograph in the organism, install the gasbag in the gas chromatograph, the second pipeline is installed at the top of graduated flask, the first end of second pipeline with the graduated flask is connected, the second end of second pipeline with the gasbag is connected, install the third electronic valve on the second pipeline, the third pipeline is installed to the gasbag, the first end of third pipeline with the gasbag is connected, the second end of third pipeline with the compressor is connected.
5. A battery gassing test apparatus according to claim 1 wherein: and a display strip for displaying the graduations of the measuring cylinder is arranged on the outer side of the machine body.
6. A battery gassing test apparatus according to claim 1 wherein: the water storage tank is internally provided with an equipment water tank, the equipment water tank is connected with the third pipeline, a fourth electronic valve is arranged between the equipment water tank and the third pipeline, and a fourth pipeline is arranged between the equipment water tank and the compressor.
7. A battery gassing test apparatus according to claim 1 wherein: and the output end of the water preparing tank is provided with a water outlet valve, and the output port of the water outlet valve is communicated with the water storage tank.
8. A detection method for a storage battery gassing test is characterized by comprising the following steps: the storage battery gassing test detection method adopts the storage battery gassing test equipment as set forth in any one of claims 1 to 7, and comprises the following steps:
s1: sealing the storage battery, reserving an air outlet pipeline, inserting the air outlet pipeline into the air inlet hole, starting an air tightness detection program in the display screen, closing the first electronic valve by the equipment, opening the second electronic valve, pressurizing the storage battery by the compressor through the flow meter, stopping pressurizing when the air pressure reaches a set pressure, closing the second electronic valve by the equipment, maintaining for a certain time, and indicating that the air tightness of the storage battery is qualified if the air pressure displayed by the flow meter does not obviously change, so that a subsequent test can be carried out;
s2: gas precipitated by the storage battery enters the measuring cylinder after passing through the flowmeter and the first electronic valve, the flowmeter records gas precipitation in real time, the average gas precipitation amount per 5S is used as the precipitation rate, the gas precipitation rate and the total gas precipitation amount are displayed on the display screen, when the gas precipitation rate is 0 for 10 continuous times, the test is judged to be finished, a test finishing button is clicked on the display screen, and the system automatically stores data such as voltage values, gas precipitation amounts and the like in each time unit in the test;
s3: and clicking the gas analysis in the display screen, automatically opening a third electronic valve at the top of the measuring cylinder by the system, enabling the gas to enter the air bag along with the negative pressure through a second pipeline, analyzing the gas in the air bag by the gas chromatograph, and displaying the detection result on the display screen.
9. The method for detecting a gassing test of a storage battery according to claim 8, characterized in that: and S2 comprises a water level preparation step of the measuring cylinder, wherein the measuring cylinder is filled with water and placed in the water tank upside down, the third electronic valve is closed, the fourth electronic valve is opened, the compressor extracts air in the water tank, so that the air pressure in the measuring cylinder and the water tank is reduced, redundant air enters the compressor, water outside the measuring cylinder enters the measuring cylinder, and the water level of the measuring cylinder is adjusted to 0 scale.
10. The method for detecting a gassing test of a storage battery according to claim 8, characterized in that: s3 includes before gas analysis, the compressor drawing gas out of the bladder to form a negative pressure.
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