CN218035475U - Gas production testing device for cylindrical lithium ion battery - Google Patents
Gas production testing device for cylindrical lithium ion battery Download PDFInfo
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- CN218035475U CN218035475U CN202222161599.XU CN202222161599U CN218035475U CN 218035475 U CN218035475 U CN 218035475U CN 202222161599 U CN202222161599 U CN 202222161599U CN 218035475 U CN218035475 U CN 218035475U
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- gas
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- lithium ion
- ion battery
- pressure monitoring
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- 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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Abstract
The utility model relates to a cylindrical lithium ion battery produces gas testing arrangement connects out to connect and connects cylinder battery case positive terminal apron central thread through-hole through the spiral, connects out to connect out the pipe connector three-way valve, and the three-way valve still connects pressure monitoring pipe and gas analysis pipe respectively, and pressure monitoring pipe connector pressure sensor, gas analysis pipe connector gas composition analysis appearance still are equipped with the pipeline switch that is located two intervals setting before the gas composition analysis appearance on the gas analysis pipe. The device does not change the electrochemical behavior of the cylindrical lithium ion battery on the one hand, and can realize real-time air pressure monitoring and real-time analysis of gas production components on the other hand, thereby more accurately researching the electrochemical behavior of the lithium ion battery at each stage.
Description
Technical Field
The utility model relates to a lithium ion battery field, a cylindrical lithium ion battery test device that produces gas specifically says so.
Background
Along with the increasing severity of the problems of energy crisis, environmental pollution and the like caused by national non-renewable energy, the lithium ion battery serving as a green environment-friendly new energy has the advantages of good reliability, high safety, small volume, light weight and the like, is widely applied to the fields of electronic products, electric automobiles, military products and the like, and becomes the application direction of large-scale energy storage power stations. Lithium batteries are generally classified into cylindrical lithium batteries, square lithium batteries, and pouch batteries according to the type of package. The cylindrical lithium ion battery has a simple winding structure, is widely used, has a high standardization degree, and is easy to realize unified standards in the industry, and the lithium ion battery can generate gas in some electrochemical charging and discharging processes (tests such as formation, overcharge, overdischarge, high-temperature cycle and the like), and the generated gas can greatly influence the electrochemical performance of the battery, so that the monitoring of the amount and the components of the gas generated in the charging and discharging processes of the lithium ion battery is particularly important. Through monitoring the gas production and the components, research and development workers can be better guided to optimize and improve the battery materials and the design of the battery.
Currently, gas production research is more in square batteries and soft package batteries, and for cylindrical lithium ion batteries, gas produced inside cannot be taken out after the batteries are filled with liquid and sealed, and the pressure change of the gas produced inside is difficult to be sensed by a hard external steel shell, so that the research on the gas produced inside the cylindrical lithium ion batteries is deficient, and the accumulation of basic experience and a corresponding characterization mode are lacked.
Disclosure of Invention
The utility model provides a simple structure can compromise the accurate cylindrical lithium ion battery who stabilizes the composition analysis of pressure monitoring and produce gas testing arrangement.
The utility model adopts the technical proposal that: the utility model provides a cylindrical lithium ion battery test device that produces gas which characterized in that: including connecing out the joint, connect the exit tube, the three-way valve, pressure monitoring pipe, pressure sensor, gas analysis pipe, gas composition analysis appearance and two pipeline switches, connect out the joint and connect cylinder battery case positive terminal apron central thread through-hole through the spiral, connect out the joint through connecing out the pipe connection three-way valve, the three-way valve still connects pressure monitoring pipe and gas analysis pipe respectively, pressure monitoring pipe connects pressure sensor, gas analysis pipe connects gas composition analysis appearance, still be equipped with the pipeline switch that two intervals that are located before the gas composition analysis appearance set up on the gas analysis pipe.
And a pressure gauge is also arranged on the pressure monitoring pipe.
The pipe diameter of the pressure monitoring pipe is larger than that of the gas analysis pipe.
The gas component analyzer is GC-MS.
The gas component analyzer is also connected with a gas extraction and exhaust device.
After the lithium battery is assembled according to a normal flow, a central threaded through hole reserved in a positive terminal cover plate is connected with an outlet joint, the outlet joint is connected with a three-way valve through a contact pipe, the two outlet diameters of the three-way valve are divided into a large-diameter pressure monitoring pipe and a small-diameter gas analysis pipe, the pressure monitoring pipe is connected with a high-precision pressure sensor, the gas production amount and the pressure in a battery cell can be conveniently detected in real time, the gas analysis pipe is connected with a gas component analyzer, a fixed space capable of being controlled bidirectionally is set at intervals between two pipeline switches, trace sample introduction of gas component detection is facilitated, and the influence on fluctuation of the pressure sensor is controllable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: lithium cell positive terminal apron 1, central screw hole 2, connect out and connect 3, connect out pipe 4, three-way valve 5, pressure monitoring pipe 6, pressure sensor 7, manometer 8, gas analysis pipe 9, gas composition analysis appearance 10, first pipeline switch 11, second pipeline switch 12.
Detailed Description
The following further description is made in conjunction with the accompanying drawings and examples.
FIG. 1 shows: the utility model provides a cylindrical lithium ion battery gas production testing arrangement, is including connecing out 3 joints, connecing out 4 pipes, three-way valve 5, pressure monitoring pipe 6, pressure sensor 7, manometer 8, gas analysis pipe 9, gas composition analysis appearance 10, first pipeline switch 11, second pipeline switch 12.
Set up central screw hole 2 on lithium cell positive terminal apron 1, be used for the screw thread to connect out and connect joint 3, connect out and connect joint 3 and connect three-way valve 5 through connecing out pipe 4, three-way valve 5 still connects pressure monitoring pipe 6 and gas analysis pipe 9 respectively, pressure monitoring pipe 6 connects manometer 8 last time, pressure sensor 7, gas analysis pipe 9 connects first pipe switch 11 last time, second pipe switch 12, gas composition analysis appearance 10, leave the pipeline section between two pipe switches, be convenient for switch over and open and close, can realize the supply of different time quantum electrochemical reaction gas, and regulation and control micro-gas supply analysis, combine pressure monitoring pipe diameter to be greater than gas analysis pipe, synthesize the accuracy of ensureing pressure monitoring.
In this example, the gas composition analyzer was a GC-MS.
In this embodiment, the gas component analyzer is further connected with an exhaust device for exhausting the gas detected at one time, so as to facilitate the subsequent gas component analysis and detection.
Claims (5)
1. The utility model provides a cylindrical lithium ion battery test device that produces gas which characterized in that: including connecing out the joint, connect the exit tube, the three-way valve, pressure monitoring pipe, pressure sensor, gas analysis pipe, gas composition analysis appearance and two pipeline switches, connect out the joint and connect cylinder battery case positive terminal apron central thread through-hole through the spiral, connect out the joint through connecing out the pipe connection three-way valve, the three-way valve still connects pressure monitoring pipe and gas analysis pipe respectively, pressure monitoring pipe connects pressure sensor, gas analysis pipe connects gas composition analysis appearance, still be equipped with the pipeline switch that two intervals that are located before the gas composition analysis appearance set up on the gas analysis pipe.
2. The gas production testing device for the cylindrical lithium ion battery according to claim 1, which is characterized in that: and a pressure gauge is also arranged on the pressure monitoring pipe.
3. The gas production testing device for the cylindrical lithium ion battery according to claim 1, which is characterized in that: the pipe diameter of the pressure monitoring pipe is larger than that of the gas analysis pipe.
4. The aerogenesis testing device for the cylindrical lithium ion battery as claimed in claim 1, which is characterized in that: the gas component analyzer is GC-MS.
5. The aerogenesis testing device for the cylindrical lithium ion battery as claimed in claim 1, which is characterized in that: the gas component analyzer is also connected with a gas extraction and exhaust device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161599.XU CN218035475U (en) | 2022-08-17 | 2022-08-17 | Gas production testing device for cylindrical lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161599.XU CN218035475U (en) | 2022-08-17 | 2022-08-17 | Gas production testing device for cylindrical lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218035475U true CN218035475U (en) | 2022-12-13 |
Family
ID=84347761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222161599.XU Active CN218035475U (en) | 2022-08-17 | 2022-08-17 | Gas production testing device for cylindrical lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218035475U (en) |
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2022
- 2022-08-17 CN CN202222161599.XU patent/CN218035475U/en active Active
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