CN113324611A - Device and method for detecting gas evolution quantity of battery - Google Patents
Device and method for detecting gas evolution quantity of battery Download PDFInfo
- Publication number
- CN113324611A CN113324611A CN202110631919.0A CN202110631919A CN113324611A CN 113324611 A CN113324611 A CN 113324611A CN 202110631919 A CN202110631919 A CN 202110631919A CN 113324611 A CN113324611 A CN 113324611A
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- battery
- gassing
- inlet end
- injector
- air
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- 238000000034 method Methods 0.000 title abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention discloses a device and a method for detecting gas evolution quantity of a battery. The battery gassing amount detection device comprises an air nozzle, a one-way valve and an injector which are sequentially connected from bottom to top; the inlet end of the air tap is connected with the air outlet of the battery to be tested for gassing amount, the outlet end of the air tap is connected with the inlet end of the one-way valve, and the outlet end of the one-way valve is connected with the inlet end of the injector. The battery gassing amount detection device has the advantages of simple structure, low cost, strong reliability and operability, high accuracy, high detection efficiency and the like.
Description
Technical Field
The invention relates to the technical field of battery detection, in particular to a device and a method for detecting gas evolution quantity of a battery.
Background
The generation of gas in the formation stage and the occurrence of gas swelling in the storage stage and the cycle of the nonaqueous battery are complicated problems. The formation process is the first charging behavior of the battery, has very important influence on the electrochemical performance of the whole battery, the electrochemical reactions generated in the formation process are very complex, and it is difficult to distinguish which reactions correspond to which phases at present, but the unified external expression of the reactions is that certain gas is inevitably generated, and the internal pressure of the battery changes; the battery inevitably generates gas in the long-term circulation process, so that the internal pressure of the battery is increased, and the battery is abnormally swelled and even exploded. The research on the gas generation of the battery is one of important indexes for the research on the safety and the failure of the battery. In order to reduce the gas generation of the battery in the formation process, the circulation process and the storage process, the gas generation mechanism of the battery needs to be deeply researched, and a targeted solution is sought to reduce the gas generation of the battery by researching the gas generation conditions of the battery at different stages, so that the high-efficiency and safe battery is prepared.
On the other hand, in the case of an aqueous battery, since water is used as an electrolyte solvent, partial water decomposition and generation of hydrogen and oxygen are inevitably caused during charging and discharging of the battery due to the positive electrode oxygen evolution potential, the negative electrode hydrogen evolution potential, and the catalytic performance of the positive and negative electrode active materials.
The existing method for detecting the gas evolution quantity of the battery mainly comprises a drainage method and an air bag collection method. The drainage method is characterized in that an air duct is led out from the interior of the battery shell, and the opening of the air duct is arranged at the bottom of a measuring cylinder which is filled with water and is arranged in the water in an inverted mode. After the battery generates gas, the gas is gathered at the bottom of the measuring cylinder and certain water is discharged from the measuring cylinder. The air bag collecting method is characterized in that the air bag is connected with the interior of the battery in a certain mode, so that the battery generates gas and gathers the gas into the air bag. However, the existing method still has the problems of inaccurate gas evolution test, large error, complex test device, high cost, complex test method, large operation difficulty, narrow application range of the test method and the device and the like.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present invention is to propose a battery gassing amount detection apparatus and method. The battery gassing amount detection device has the advantages of simple structure, low cost, strong reliability and operability, high accuracy, high detection efficiency and the like.
In one aspect of the invention, a device for detecting the gassing amount of a battery is provided. According to the embodiment of the invention, the battery gassing amount detection device comprises an air faucet, a one-way valve and an injector which are sequentially connected from bottom to top; the inlet end of the air tap is connected with the air outlet of the battery to be tested for gassing amount, the outlet end of the air tap is connected with the inlet end of the one-way valve, and the outlet end of the one-way valve is connected with the inlet end of the injector.
The device according to the embodiment of the invention is adopted to detect the gassing amount of the battery, the inlet end of the air tap is connected with the air outlet of the battery with the gassing amount to be detected, and the battery gassing amount detection device and the battery are vacuumized before the battery runs. And subsequently, gas is generated along with the operation of the battery, the gas generated is pumped out of the battery into the syringe pipe through the one-way valve by using the syringe piston, and the gas generation rate of the battery can be read according to the scales of the syringe. Therefore, the battery gassing amount detection device is simple in structure, low in cost, high in reliability and operability, capable of accurately and efficiently detecting the battery gassing amount, free of limitation on the specific type of the battery to be detected, suitable for detecting the gassing amount of a water-based or non-water-based battery, and capable of widening the types of the battery to be detected.
In addition, the battery gassing amount detection apparatus according to the above embodiment of the present invention may also have the following additional technical features:
in some embodiments of the present invention, a sealing ring is further disposed between the outlet end of the air faucet and the inlet end of the one-way valve.
In some embodiments of the present invention, a sealing bolt is further disposed between the outlet end of the air faucet and the inlet end of the one-way valve.
In some embodiments of the invention, the outlet end of the one-way valve is connected to the inlet end of the syringe via an adapter.
In some embodiments of the present invention, the battery gassing amount detection means further comprises: the elastic sleeve is sleeved at the joint of the inlet end of the injector and the adapter.
In some embodiments of the present invention, the range of the syringe is 1-500 mL.
In another aspect of the present invention, the present invention provides a method for detecting a gassing amount of a battery, which is implemented by using the device for detecting a gassing amount of a battery of the above embodiment. According to an embodiment of the present invention, the battery gassing amount detection method includes: connecting the inlet end of an air tap with the air outlet of the battery to be tested for gassing amount, and enabling the range of the injector to return to zero; vacuumizing the battery with the gas evolution quantity to be detected and the battery gas evolution quantity detection device; starting the battery to operate to enable the battery to generate gas; and extracting the produced gas of the battery by using the injector, and obtaining the produced gas of the battery according to the scales on the injector. Therefore, the method for detecting the gas evolution rate of the battery by adopting the device of the embodiment has stronger reliability and operability, can accurately and efficiently measure the gas evolution rate of the battery, has no limitation on the specific type of the battery to be detected, is suitable for detecting the gas evolution rate of a water-system or non-water-system battery, and widens the types of the battery to be detected.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a battery gassing amount detection apparatus according to an embodiment of the present invention.
Description of reference numerals:
1-air tap, 2-one-way valve, 3-injector, 4-sealing ring, 5-sealing bolt and 6-adapter.
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 drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly specified 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; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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.
In addition, the inlet end of the syringe in the present invention means the lower end of the syringe (the end from which the needle is removed).
In one aspect of the invention, a device for detecting the gassing amount of a battery is provided. Referring to fig. 1, according to an embodiment of the present invention, the device for detecting the amount of gassing in a battery includes a gas nozzle 1, a check valve 2 and a syringe 3 connected in sequence from bottom to top; the inlet end of the air tap 1 is connected with the air outlet of the battery to be tested for gassing amount, the outlet end of the air tap 1 is connected with the inlet end of the one-way valve 2, and the outlet end of the one-way valve 2 is connected with the inlet end of the injector 3.
The battery gassing amount detection apparatus according to the embodiment of the present invention is further described in detail below.
According to the embodiment of the present invention, a sealing ring 4 is further disposed between the outlet end of the air faucet 1 and the inlet end of the one-way valve 2. Sealing washer 4 can play the effect of gasket between the exit end of air cock 1 and the entry end of check valve 2, further improves the gas tightness of device to further improve the accuracy of gas production volume testing result.
According to the embodiment of the present invention, a sealing bolt 5 is further disposed between the outlet end of the air faucet 1 and the inlet end of the check valve 2. Therefore, the air tightness of the device can be further improved, and the accuracy of the gas production rate detection result is further improved. In particular, the sealing bolt 5 may be arranged above the sealing ring 4.
According to an embodiment of the invention, the outlet end of the one-way valve 2 is connected to the inlet end of the syringe 3 by means of an adapter 6. Thereby, a stable connection of the check valve 2 with the injection 3 can be facilitated. It should be noted that the specific structure of the adapter 6 is not particularly limited as long as the outlet end of the check valve 2 can be effectively connected with the inlet end of the syringe 3 while ensuring air tightness.
According to an embodiment of the present invention, the battery gassing amount detection apparatus of the present invention further includes: an elastic sleeve (not shown in the drawings). The elastic sleeve is sleeved at the joint of the inlet end of the injector and the adapter. Through the elastic sleeve pipe of establishing of cover, can further improve the entry end of syringe and the fixed stability of adapter to further improve the gas tightness of device. In addition, the specific type of the elastic tube is not particularly limited, and for example, a rubber tube or the like may be selected.
According to the invention, the range of the injector 3 can be 1-500 mL. Therefore, the detection requirements of different battery gassing amounts can be met.
In another aspect of the present invention, the present invention provides a method for detecting a gassing amount of a battery, which is implemented by using the device for detecting a gassing amount of a battery of the above embodiment. According to an embodiment of the present invention, the battery gassing amount detection method includes: connecting the inlet end of an air tap with the air outlet of the battery to be tested for gassing amount, and enabling the range of the injector to return to zero; vacuumizing a battery with a gas evolution quantity to be detected and a battery gas evolution quantity detection device; starting the battery to operate to enable the battery to generate gas; and extracting the produced gas of the battery by using the injector, and obtaining the produced gas of the battery according to the scales on the injector. Therefore, the method for detecting the gas evolution rate of the battery by adopting the device of the embodiment has stronger reliability and operability, can accurately and efficiently measure the gas evolution rate of the battery, has no limitation on the specific type of the battery to be detected, is suitable for detecting the gas evolution rate of a water-system or non-water-system battery, and widens the types of the battery to be detected.
In addition, it should be noted that all the features and advantages described above for the battery gassing amount detection device are also applicable to the battery gassing amount detection method, and are not described in detail herein.
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 (7)
1. The device for detecting the gassing amount of the battery is characterized by comprising an air nozzle, a one-way valve and an injector which are sequentially connected from bottom to top; the inlet end of the air tap is connected with the air outlet of the battery to be tested for gassing amount, the outlet end of the air tap is connected with the inlet end of the one-way valve, and the outlet end of the one-way valve is connected with the inlet end of the injector.
2. The device for detecting the amount of gassing in a battery as set forth in claim 1, wherein a sealing ring is further disposed between the outlet end of the air tap and the inlet end of the check valve.
3. The device for detecting the amount of gassing in a battery as set forth in claim 2, wherein a sealing bolt is further provided between the outlet end of the air tap and the inlet end of the check valve.
4. The device for detecting the amount of gassing in a battery as defined in claim 1, wherein the outlet end of said one-way valve is connected to the inlet end of said syringe by means of an adapter.
5. The battery gassing amount detection apparatus according to claim 4, characterized by further comprising: the elastic sleeve is sleeved at the joint of the inlet end of the injector and the adapter.
6. The device for detecting the amount of gassing in a battery according to claim 1, characterized in that the range of the syringe is 1-500 mL.
7. A battery gassing amount detection method implemented by using the battery gassing amount detection device according to any one of claims 1 to 6, characterized by comprising:
connecting the inlet end of an air tap with the air outlet of the battery to be tested for gassing amount, and enabling the range of the injector to return to zero;
vacuumizing the battery with the gas evolution quantity to be detected and the battery gas evolution quantity detection device;
starting the battery to operate to enable the battery to generate gas;
and extracting the produced gas of the battery by using the injector, and obtaining the produced gas of the battery according to the scales on the injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110631919.0A CN113324611A (en) | 2021-06-07 | 2021-06-07 | Device and method for detecting gas evolution quantity of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110631919.0A CN113324611A (en) | 2021-06-07 | 2021-06-07 | Device and method for detecting gas evolution quantity of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113324611A true CN113324611A (en) | 2021-08-31 |
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ID=77419919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110631919.0A Withdrawn CN113324611A (en) | 2021-06-07 | 2021-06-07 | Device and method for detecting gas evolution quantity of battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113324611A (en) |
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2021
- 2021-06-07 CN CN202110631919.0A patent/CN113324611A/en not_active Withdrawn
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Application publication date: 20210831 |
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| WW01 | Invention patent application withdrawn after publication |