CN222049724U - Device for collecting lithium battery gas - Google Patents
Device for collecting lithium battery gas Download PDFInfo
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- CN222049724U CN222049724U CN202323370293.6U CN202323370293U CN222049724U CN 222049724 U CN222049724 U CN 222049724U CN 202323370293 U CN202323370293 U CN 202323370293U CN 222049724 U CN222049724 U CN 222049724U
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- Prior art keywords
- threaded hole
- lithium battery
- air pipe
- shell
- air bag
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 43
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 22
- 239000012535 impurity Substances 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 52
- 239000000243 solution Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 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
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Hybrid Cells (AREA)
Abstract
本申请提供一种收集锂电池气体的装置，适用于锂电池，包括用于收集气体的壳式气囊，所述壳式气囊中空设置；所述壳式气囊的一端面上设置有相互独立的第一螺纹孔和第二螺纹孔；所述第一螺纹孔通过第一气管与所述锂电池的注液口连通设置；所述第二螺纹孔与第二气管连通设置，所述第二气管远离所述第二螺纹孔的一端与抽真空装置连通设置。通过本申请结构，可以收集任何密度、多种类的气体，不受排空气法和排水集气法的影响；而且，可以收集只含电池内部产生的气体，防止杂质带来的测试不便；抽真空后的壳式气囊可以快速收集电池内部产生的气体，解决了气囊充气需要压力的问题。本申请结构简单，方便易操作，且可以重复使用。
The present application provides a device for collecting lithium battery gas, which is suitable for lithium batteries and includes a shell-type airbag for collecting gas, wherein the shell-type airbag is hollow; a first threaded hole and a second threaded hole independent of each other are arranged on one end surface of the shell-type airbag; the first threaded hole is connected to the injection port of the lithium battery through a first air pipe; the second threaded hole is connected to the second air pipe, and the end of the second air pipe away from the second threaded hole is connected to a vacuum device. Through the structure of the present application, any density and multiple types of gas can be collected, which is not affected by the air exhaust method and the water drainage gas collection method; moreover, only the gas generated inside the battery can be collected to prevent the inconvenience of testing caused by impurities; the shell-type airbag after vacuuming can quickly collect the gas generated inside the battery, solving the problem of pressure required for airbag inflation. The present application has a simple structure, is convenient and easy to operate, and can be reused.
Description
Technical Field
The utility model belongs to the technical field of batteries, and particularly relates to a device for collecting lithium battery gas.
Background
The lithium ion battery has the advantages of high voltage, high specific energy, long cycle life, long storage time and the like, and is widely applied to various fields of energy storage power supply systems (such as hydraulic power, firepower, wind power, solar power stations and the like), electric tools, electric bicycles, electric motorcycles, electric automobiles and the like.
However, the lithium ion battery has a non-negligible safety problem, and the lithium ion battery is easy to cause accidents such as fire and explosion caused by thermal runaway due to mechanical abuse, electric abuse, thermal abuse and the like, thereby causing unavoidable property loss and casualties. Therefore, the safety problem of lithium ion batteries is also receiving increasing attention. The lithium battery generates characteristic gases such as CO, H 2, HF and various hydrocarbons in the thermal runaway process, and gas analysis is one of important methods for researching the thermal runaway mechanism of the battery.
At present, the collected gas is generally subjected to component measurement through a gas chromatography mass spectrometer so as to obtain the thermal runaway cause and corresponding measures of the lithium ion battery. Common gas collection methods include an air evacuation method, a water drainage and gas collection method, and the like. The air discharge method is classified into an upward air discharge method and a downward air discharge method according to whether the density of the collected gas is greater than the air density, and this method fails once the density of the collected gas is unknown or the kind is large. The water and gas collecting method can introduce water impurities and cause interference to the test process. Most of the gas collecting devices in the prior art adopt the method for collecting, and the problems of difficult collection, easy introduction of impurities, impure gas and the like exist.
Disclosure of utility model
The embodiment of the utility model provides a device for collecting lithium battery gas, which aims to solve the problems that most of gas collecting devices in the prior art are difficult to collect, easy to introduce impurities, gas is impure and the like when collecting battery gas.
In order to achieve the above object, an embodiment of the present utility model provides a device for collecting gas of a lithium battery, which is suitable for a lithium battery, and includes a shell-type air bag for collecting gas, wherein the shell-type air bag is hollow; a first threaded hole and a second threaded hole which are mutually independent are formed in one end face of the shell type air bag; the first threaded hole is communicated with a liquid injection port of the lithium battery through a first air pipe; the second threaded hole is communicated with the second air pipe, and one end, away from the second threaded hole, of the second air pipe is communicated with the vacuumizing device.
As a preferred embodiment, a first valve for controlling the first air pipe to be opened or closed is arranged on the first air pipe; the second air pipe is provided with a second valve for controlling the second air pipe to be opened or closed.
In a preferred embodiment, the first air tube is spaced from the bottom surface of the shell-type air bag by a distance smaller than the distance between the second air tube and the bottom surface of the shell-type air bag.
As a preferred embodiment, the first air pipe is in threaded connection with the first threaded hole, and the first threaded hole is communicated with the shell type air bag; the second air pipe is in threaded connection with the second threaded hole, and the second threaded hole is communicated with the shell type air bag.
As a preferred embodiment, the first air pipe is adapted to the liquid injection port of the lithium battery; the second air pipe is arranged in a matching way with the vacuumizing device.
As a preferred embodiment, the first air pipe is matched with the first threaded hole; the second air pipe is matched with the second threaded hole.
As a preferred embodiment, when the first valve is in an opened state, the shell-type air bag, the first air pipe and the liquid injection port of the lithium battery are communicated with each other, and the second valve is in a closed state.
As a preferred embodiment, when the second valve is in an open state, the shell-type air bag, the second air pipe and the vacuumizing device are communicated with each other, and the first valve is in a closed state.
As a preferred embodiment, the first threaded hole and the second threaded hole are symmetrically arranged, and the first threaded hole and the second threaded hole are the same in size.
As a preferred embodiment, the shell-type balloon is a hard-body balloon; the first air pipe and the second air pipe are both rubber air pipes.
When the air bag is used, the first valve is closed, then the second valve is opened, the vacuumizing device is started at the same time, and air in the shell type air bag is pumped away from the second air pipe, so that the shell type air bag is kept in a vacuum state, then the second valve is closed, and the vacuumizing device is closed; and then the first valve is opened, so that gas generated in the lithium battery flows into the shell type air bag from the liquid injection port through the first air pipe, and after the gas in the lithium battery is collected, the first valve is closed, so that the gas in the shell type air bag can be ensured to be the gas generated by the lithium battery, and other impurities are not present.
Compared with the prior art, the invention has the following advantages:
According to the application, the first air pipe and the second air pipe are arranged on the shell type air bag, the two air pipes are independently controlled to be switched on and off, and air in the shell type air bag is pumped out through the second air pipe, so that a vacuum effect is achieved; the evacuated shell type air bag can improve the speed of collecting gas, is beneficial to leading the gas generated in the lithium battery into the shell type air bag through the first air pipe, and well solves the problems that the conventional air bag needs a certain pressure for inflation and has less collection amount; meanwhile, the shell type air bag after vacuumizing can well collect gases with different densities and different types, and the shell type air bag is free from water contact, so that the defects of an air exhausting method and a water draining and air collecting method are overcome.
Through the structure of the application, any density and various gases can be collected without being influenced by an air evacuation method and a water drainage and air collection method; moreover, the gas generated in the battery can be collected, so that the inconvenience in testing caused by impurities is prevented; the shell type air bag after vacuumizing can quickly collect gas generated in the battery, so that the problem that the air bag needs pressure when being inflated is solved; the application has simple structure, can control the collection amount of gas and the speed of inlet and outlet, is convenient and easy to operate, and can be repeatedly used.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an apparatus for collecting lithium battery gas according to an embodiment of the present utility model;
Fig. 2 is a schematic structural view of a shell type airbag of the device for collecting lithium battery gas of fig. 1.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, back, top, bottom … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
Specifically, as shown in fig. 1 to 2, an embodiment of the present utility model provides a device for collecting gas of a lithium battery, which is suitable for a lithium battery (not shown in the drawings), and includes a shell-type air bag 10 for collecting gas, wherein the shell-type air bag 10 is hollow; a first threaded hole 11 and a second threaded hole 12 which are mutually independent are arranged on one end face of the shell type air bag 10; the first threaded hole 11 is communicated with a liquid injection port (not labeled in the figure) of the lithium battery through a first gas pipe 20; the second threaded hole 12 is communicated with a second air pipe 30, and one end of the second air pipe 30 away from the second threaded hole 12 is communicated with a vacuumizing device (not shown).
As a preferred embodiment, the first air pipe 20 is provided with a first valve 40 for controlling the first air pipe 20 to be opened or closed; the second air pipe 30 is provided with a second valve 50 for controlling the second air pipe 30 to be opened or closed. Thus, the gas generated in the battery can be collected, and the inconvenience in testing caused by impurities is prevented; the shell type air bag after vacuumizing can rapidly collect gas generated in the battery, and the problem that the air bag needs pressure when inflated is solved. The length and thickness of the first air pipe 20 and the second air pipe 30 are set according to actual needs.
As a preferred embodiment, the distance between the first air tube 20 and the bottom surface of the shell-type air bag 10 is smaller than the distance between the second air tube 30 and the bottom surface of the shell-type air bag 10. Therefore, the vacuum state of the shell type air bag can be better realized, and meanwhile, the speed of collecting gas can be improved, so that the gas generated in the lithium battery can be introduced into the shell type air bag through the first air pipe.
As a preferred embodiment, the first air pipe 20 is in threaded connection with the first threaded hole 11, and the first threaded hole 11 is disposed in communication with the shell-type air bag 10; the second air pipe 12 is in threaded connection with the second threaded hole 12, and the second threaded hole 12 is communicated with the shell type air bag 10. Therefore, the quick fixing and the installation of the first air pipe and the second air pipe are convenient, and the gas generated in the battery can be collected, so that the inconvenience in testing caused by impurities is prevented; the shell type air bag after being vacuumized can rapidly collect gas generated in the battery.
As a preferred embodiment, the first gas pipe 20 is adapted to the liquid injection port of the lithium battery; the second air pipe 30 is adapted to the vacuum pumping device.
As a preferred embodiment, the first air pipe 20 is adapted to the first threaded hole 11; the second air pipe 30 is adapted to the second threaded hole 12.
As a preferred embodiment, when the first valve 40 is in an opened state, the shell-type air bag 10, the first air tube 20 and the liquid filling port of the lithium battery are communicated with each other, and the second valve 50 is in a closed state.
As a preferred embodiment, when the second valve 50 is in an opened state, the shell-type airbag 10, the second gas pipe 30 and the evacuating device are communicated with each other, and the first valve 40 is in a closed state.
As a preferred embodiment, the first screw hole 11 and the second screw hole 12 are symmetrically arranged, and the first screw hole 11 and the second screw hole 12 have the same size.
As a preferred embodiment, the shell bladder 10 is a hard bladder; the first air pipe 20 and the second air pipe 30 are both rubber air pipes.
When the air bag is used, the first valve is closed, then the second valve is opened, the vacuumizing device is started at the same time, and air in the shell type air bag is pumped away from the second air pipe, so that the shell type air bag is kept in a vacuum state, then the second valve is closed, and the vacuumizing device is closed; and then the first valve is opened, so that gas generated in the lithium battery flows into the shell type air bag from the liquid injection port through the first air pipe, and after the gas in the lithium battery is collected, the first valve is closed, so that the gas in the shell type air bag can be ensured to be the gas generated by the lithium battery, and other impurities are not present.
According to the application, the first air pipe and the second air pipe are arranged on the shell type air bag, the two air pipes are independently controlled to be switched on and off, and air in the shell type air bag is pumped out through the second air pipe, so that a vacuum effect is achieved; the evacuated shell type air bag can improve the speed of collecting gas, is beneficial to leading the gas generated in the lithium battery into the shell type air bag through the first air pipe, and well solves the problems that the conventional air bag needs a certain pressure for inflation and has less collection amount; meanwhile, the shell type air bag after vacuumizing can well collect gases with different densities and different types, and the shell type air bag is free from water contact, so that the defects of an air exhausting method and a water draining and air collecting method are overcome.
Through the structure of the application, any density and various gases can be collected without being influenced by an air evacuation method and a water drainage and air collection method; moreover, the gas generated in the battery can be collected, so that the inconvenience in testing caused by impurities is prevented; the shell type air bag after vacuumizing can quickly collect gas generated in the battery, so that the problem that the air bag needs pressure when being inflated is solved; the application has simple structure, can control the collection amount of gas and the speed of inlet and outlet, is convenient and easy to operate, and can be repeatedly used.
In the description herein, reference to the term "one embodiment," "an example," etc., means 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A device for collecting gas of a lithium battery, which is characterized by being suitable for the lithium battery and comprising a shell type air bag for collecting gas, wherein the shell type air bag is arranged in a hollow way; a first threaded hole and a second threaded hole which are mutually independent are formed in one end face of the shell type air bag; the first threaded hole is communicated with a liquid injection port of the lithium battery through a first air pipe; the second threaded hole is communicated with the second air pipe, and one end, away from the second threaded hole, of the second air pipe is communicated with the vacuumizing device.
2. The device for collecting lithium battery gas according to claim 1, wherein a first valve for controlling the first gas pipe to be opened or closed is arranged on the first gas pipe; the second air pipe is provided with a second valve for controlling the second air pipe to be opened or closed.
3. The device for collecting lithium battery gas according to claim 1, wherein a distance between the first air tube and a bottom surface of the shell-type air bag is smaller than a distance between the second air tube and a bottom surface of the shell-type air bag.
4. The device for collecting lithium battery gas according to claim 1, wherein the first air pipe is in threaded connection with the first threaded hole, and the first threaded hole is arranged in communication with the shell-type air bag; the second air pipe is in threaded connection with the second threaded hole, and the second threaded hole is communicated with the shell type air bag.
5. The device for collecting lithium battery gas according to claim 1, wherein the first air pipe is adapted to the liquid injection port of the lithium battery; the second air pipe is arranged in a matching way with the vacuumizing device.
6. The device for collecting lithium battery gas according to claim 1, wherein the first air pipe is adapted to the first threaded hole; the second air pipe is matched with the second threaded hole.
7. The device for collecting lithium battery gas according to claim 2, wherein when the first valve is in an open state, the shell-type air bag, the first air pipe and the liquid filling port of the lithium battery are communicated with each other, and the second valve is in a closed state.
8. The device for collecting lithium battery gas according to claim 2, wherein when the second valve is in an open state, the shell-type air bag, the second air pipe and the vacuumizing device are communicated with each other, and the first valve is in a closed state.
9. The device for collecting lithium battery gas according to claim 1, wherein the first threaded hole and the second threaded hole are symmetrically arranged, and the first threaded hole and the second threaded hole are the same in size.
10. The device for collecting lithium battery gas according to claim 1, wherein the shell-type air bag is a hard-body air bag; the first air pipe and the second air pipe are both rubber air pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323370293.6U CN222049724U (en) | 2023-12-11 | 2023-12-11 | Device for collecting lithium battery gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323370293.6U CN222049724U (en) | 2023-12-11 | 2023-12-11 | Device for collecting lithium battery gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222049724U true CN222049724U (en) | 2024-11-22 |
Family
ID=93511464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323370293.6U Active CN222049724U (en) | 2023-12-11 | 2023-12-11 | Device for collecting lithium battery gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222049724U (en) |
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2023
- 2023-12-11 CN CN202323370293.6U patent/CN222049724U/en active Active
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