CN220932903U - Lithium battery inner gas detection device suitable for multipath gas detection - Google Patents
Lithium battery inner gas detection device suitable for multipath gas detection Download PDFInfo
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- CN220932903U CN220932903U CN202322299103.XU CN202322299103U CN220932903U CN 220932903 U CN220932903 U CN 220932903U CN 202322299103 U CN202322299103 U CN 202322299103U CN 220932903 U CN220932903 U CN 220932903U
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- 238000001514 detection method Methods 0.000 title claims abstract description 78
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 13
- 238000004146 energy storage Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 72
- 238000007789 sealing Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of energy storage battery safety monitoring, and in particular relates to a lithium battery internal gas detection device suitable for multi-channel gas detection, which comprises a main pipeline gas row with multi-channel gas channels, wherein the gas channels on the main pipeline gas row are connected with branch pipelines through branch pipeline connectors, branch pipeline control valves are arranged on the main pipeline gas row corresponding to the branch pipelines, and the free ends of the branch pipelines are externally connected with gas detection interfaces; the air suction module is connected with the main pipeline air exhaust through a main pipeline, a fan and a volute-shaped air channel positioned in the air exhaust direction of the fan are arranged in the air suction module, a gas sensor is arranged in the detection module, and the gas sensor is positioned at a gas outlet of the volute-shaped air channel; the utility model can realize the circular detection of the gas in the plurality of battery packs, has high efficiency and stable gas flow rate, improves the detection precision and further improves the referenceability of the gas detection.
Description
Technical Field
The utility model belongs to the technical field of safety monitoring of energy storage batteries, and particularly relates to a lithium battery internal gas detection device suitable for multi-path gas detection.
Background
The battery is used as a core part of the new energy automobile, and the stable operation of the battery is important. The battery can generate a series of thermal runaway reactions due to internal short circuit and external heating in the process of using the battery or the battery itself generates heat when charged and discharged with large current, the temperature rises to generate a large amount of heat and gas, the battery can be seriously exploded, and great threat is caused to the safety of people, so that the battery is very important to early warn, and the early warning detection modes commonly used in the market at present mostly adopt modes such as smoke, temperature, pressure, gas and the like to judge whether the battery generates thermal runaway.
The prior China patent with publication number CN114324782B discloses a combustible gas detection device for a battery box, which collects external gas through a shell, and performs combustible detection on gas entering the detection tube through a combustible gas detection module installed in the detection tube so as to realize the safety protection of the battery box. However, the above scheme has the following problems in implementation: the scheme is only suitable for detecting one path of gas of a single battery box, and the efficiency is lower when detecting multiple paths of gas.
Disclosure of utility model
The utility model aims to provide a lithium battery internal gas detection device suitable for multi-path gas detection, so as to solve the problems in the background technology.
The utility model realizes the above purpose through the following technical scheme:
The utility model provides a gaseous detection device in lithium cell suitable for multichannel gas detection, the device carries out gaseous detection through the gaseous detection interface of external battery box, and the device includes:
The main pipeline gas row is provided with a plurality of paths of gas channels, the gas channels on the main pipeline gas row are connected with branch pipelines through branch pipeline joints, the main pipeline gas row is provided with branch pipeline control valves corresponding to the branch pipelines, and the free ends of the branch pipelines are externally connected with the gas detection interfaces;
the air suction module is connected with the main pipeline air exhaust through a main pipeline, a fan and a volute-shaped air channel positioned in the air exhaust direction of the fan are arranged in the air suction module, a gas sensor is arranged in the detection module, and the gas sensor is positioned at a gas outlet of the volute-shaped air channel.
As a further optimization scheme of the invention, two ends of the main pipeline are connected with the main pipeline air row and the detection module through main pipeline connectors.
As a further preferred embodiment of the present invention, the main pipe joint and the branch pipe joint are each threaded joints having internal taper pipe threads.
As a further optimization scheme of the invention, the air suction module comprises an upper shell and a lower shell which are mounted in a screw fit manner, a notch is formed in one side, away from the main pipeline, of the upper shell, and the detection module is located below the notch.
As a further optimization scheme of the invention, the volute-shaped air duct comprises a gas inlet and a bent shell which is perpendicular to the gas inlet; the gas outlet is arranged below the bent shell, an air outlet is arranged on the shell surface of the bent shell, which is opposite to the gas outlet, and an air outlet is arranged on the upper end surface of the upper shell, which corresponds to the air outlet.
The utility model has the beneficial effects that:
(1) The utility model can realize the circular detection of the gas in the plurality of battery packs, has high efficiency and stable gas flow rate, improves the detection precision and further improves the referenceability of the gas detection.
(2) According to the utility model, the volute-shaped air duct is arranged in the air suction module, so that on one hand, the circulation speed of gas can be accelerated by the volute-shaped air duct, and the gas outlet of the gas flowing to the detection module and the air outlet are oppositely arranged, so that the detected gas can be discharged out of the air suction module through the air outlet quickly, and the interference to the gas detection of the subsequent battery pack is prevented.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic view of a partial cross-sectional structure of a detection module according to the present utility model;
FIG. 3 is a schematic diagram of the overall structure of the detection module according to the present utility model;
FIG. 4 is a schematic view of the structure of the upper housing and the volute shaped air duct of the present utility model;
Fig. 5 is a schematic structural view of a volute-shaped air duct in the present utility model.
In the figure: 1. a branch pipeline; 2. a branch pipe joint; 3. a branch line control valve; 4. a main pipeline air exhaust; 5. a main pipeline joint; 6. a main pipeline; 7. a suction module; 8. a detection module; 9. a first sealing gasket; 71. an upper housing; 72. a lower housing; 73. a screw; 74. an air outlet; 75. a fan limit column; 76. a blower; 77. a second sealing gasket; 78. a volute-shaped air duct; 781. a gas inlet; 782. a gas outlet; 783. and an air outlet.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings, wherein it is to be understood that the following detailed description is for the purpose of further illustrating the application only and is not to be construed as limiting the scope of the application, as various insubstantial modifications and adaptations of the application to those skilled in the art can be made in light of the foregoing disclosure.
Example 1
As shown in fig. 1-5, this embodiment provides a lithium battery internal gas detection device suitable for multi-path gas detection, the device performs gas detection through a gas detection interface of an external battery box, and the device includes:
A main pipeline gas row 4 with multiple paths of gas channels, wherein the gas channels on the main pipeline gas row 4 are connected with branch pipelines 1 through branch pipeline joints 2, the main pipeline gas row 4 is provided with branch pipeline control valves 3 corresponding to the branch pipelines 1, and the free ends of the branch pipelines 1 are externally connected with gas detection interfaces;
The air suction module 7 and the detection module 8 are connected with the main pipeline air exhaust 4 through the main pipeline 6, a fan 76 and a volute-shaped air channel 78 positioned in the air exhaust direction of the fan 76 are arranged in the air suction module 7, a gas sensor is arranged in the detection module 8, and the gas sensor is positioned at a gas outlet 782 of the volute-shaped air channel 78.
Referring to fig. 1, in this embodiment, a main pipeline gas row 4 with multiple channels of gas channels is connected to multiple branch pipelines 1, and each branch pipeline 1 is provided with a corresponding branch pipeline control valve 3, and the main pipeline gas row 4 is connected to an air suction module 7 and a detection module 8 through a main pipeline 6; when the device works, a fan of the air suction module 7 is started, the rotating speed of the fan is regulated to an optimal value, a first branch pipeline control valve 3 is opened, gas is extracted from an external battery box, and the gas is discharged to the detection module 8 for detection through an outlet of the fan 76; then the next battery box is detected, at this time, the first branch pipe control valve 3 is closed, the second branch pipe control valve 3 is opened, gas is extracted from the battery box for detection, and the detection is continuously carried out on the multiple battery box gases in a circulating way. Meanwhile, a sealing gasket I9 is arranged at the adjacent position of the air suction module 7 and the detection module 8, so that the air is ensured not to be exposed. The gas concentration is ensured, and the detection precision and efficiency are further improved.
It should be noted that, the gas sensor in the detection module 8 in the present application includes, but is not limited to, a flammable gas concentration sensor.
In this embodiment, the detecting device further includes a controller module, configured to receive the gas detection data of the sensor, close the branch pipeline control valve 3 corresponding to the gas after receiving the detection data, and open the next branch pipeline control valve 3, so as to perform cycle detection.
Preferably, both ends of the main pipeline 6 are connected with the main pipeline air exhaust 4 and the detection module 8 through main pipeline joints 5, and the main pipeline joints 5 and the branch pipeline joints 2 are threaded joints with inner cone pipe threads; and the main pipeline air bar 4 and the detection module 8 in the device are convenient to assemble and disassemble.
With reference to fig. 2-3, as a preferred embodiment, the air suction module 7 includes an upper housing 71 and a lower housing 72 mounted in a matched manner by screws 73, a notch is formed on a side of the upper housing 71 away from the main pipeline 6, the detection module 8 is located below the notch, so that air can flow to the detection module 8 directly, a fan 76 is mounted in the air suction module 7, a reasonable air suction space and an air discharge space are reserved in the upper housing 71 and the lower housing 72, and the fan position is fixed by a fan limiting column 75. The blower 76, the upper casing 71 and the lower casing 72 are sealed by the second sealing gasket 77, so that the gas flow direction is consistent, and the interference caused by the inverted gas is prevented.
Referring to fig. 4 to 5, the volute-shaped air duct 78 preferably includes a gas inlet 781, and a bent housing perpendicular to the gas inlet 781; the gas outlet 782 is arranged below the bent shell, an air outlet 783 is arranged on the shell surface of the bent shell, which is opposite to the gas outlet 782, an air outlet 74 is arranged on the upper end surface of the upper shell 71, which corresponds to the air outlet 783, and the caliber of the gas outlet 782 is far greater than that of the air outlet 74.
In the embodiment, a volute air duct structure is designed on the upper shell 71, and after air is exhausted, the air can flow downwards along the bent shell, so that the sucked lithium battery air directly enters the detection module 8, an air outlet 74 is designed on the upper end surface of the upper shell 71, and the air exhausted by the air suction module 7 can be exhausted through the side air outlet 74; the sensor of the interference detection module 8 is prevented from detecting the subsequent battery box gas, so that the accuracy and the data referenceability are improved, and the hydrogen is mainly hydrogen in the combustible gas of the battery pack and can be rapidly discharged from the air outlet 74 by virtue of the characteristics of the hydrogen; in addition, the air suction module 7 is provided with four mounting holes which are bilaterally symmetrical, and the mounting of the matched screws 73 is convenient.
The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (5)
1. The utility model provides a gaseous detection device in lithium cell suitable for multichannel gas detection, the device carries out gas detection through the gas detection interface of external battery box, its characterized in that: the device comprises:
A main pipeline gas row (4) with multiple paths of gas channels, wherein the gas channels on the main pipeline gas row (4) are connected with branch pipelines (1) through branch pipeline joints (2), the main pipeline gas row (4) is provided with branch pipeline control valves (3) corresponding to the branch pipelines (1), and the free ends of the branch pipelines (1) are externally connected with the gas detection interfaces;
The air suction device comprises an air suction module (7) and a detection module (8), wherein the air suction module (7) is connected with an air row (4) of a main pipeline through a main pipeline (6), a fan (76) and a volute-shaped air channel (78) positioned in the air discharge direction of the fan (76) are arranged in the air suction module (7), a gas sensor is arranged in the detection module (8), and the gas sensor is positioned at a gas outlet (782) of the volute-shaped air channel (78).
2. The lithium battery internal gas detection device suitable for multi-path gas detection according to claim 1, wherein: both ends of the main pipeline (6) are connected with the main pipeline air row (4) and the detection module (8) through main pipeline connectors (5).
3. The lithium battery internal gas detection device suitable for multi-path gas detection according to claim 2, wherein: the main pipeline joint (5) and the branch pipeline joint (2) are threaded joints with internal taper pipe threads.
4. The lithium battery internal gas detection device suitable for multi-path gas detection according to claim 1, wherein: the air suction module (7) comprises an upper shell (71) and a lower shell (72) which are mounted in a matched mode through screws (73), a notch is formed in one side, away from the main pipeline (6), of the upper shell (71), and the detection module (8) is located below the notch.
5. The lithium battery internal gas detection device suitable for multi-path gas detection according to claim 4, wherein: the volute-shaped air duct (78) comprises a gas inlet (781) and a bent shell which is perpendicular to the gas inlet (781); the gas outlet (782) is arranged below the bent shell, an exhaust outlet (783) is arranged on the shell surface of the bent shell, which is opposite to the gas outlet (782), and an air outlet (74) is arranged on the upper end surface of the upper shell (71) corresponding to the exhaust outlet (783).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322299103.XU CN220932903U (en) | 2023-08-25 | 2023-08-25 | Lithium battery inner gas detection device suitable for multipath gas detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322299103.XU CN220932903U (en) | 2023-08-25 | 2023-08-25 | Lithium battery inner gas detection device suitable for multipath gas detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220932903U true CN220932903U (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322299103.XU Active CN220932903U (en) | 2023-08-25 | 2023-08-25 | Lithium battery inner gas detection device suitable for multipath gas detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220932903U (en) |
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2023
- 2023-08-25 CN CN202322299103.XU patent/CN220932903U/en active Active
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Address after: No. 15 Hengyang Road, Guxian Street, Yantai Economic and Technological Development Zone, Shandong Province, China 265503 Patentee after: Ligao (Shandong) New Energy Technology Co.,Ltd. Country or region after: China Address before: Room 501, No. 8, No. 300, Changjiang Road, Yantai Economic and Technological Development Zone, Yantai Area, China (Shandong) Pilot Free Trade Zone, Yantai City, Shandong Province, 264006 Patentee before: Ligao (Shandong) New Energy Technology Co.,Ltd. Country or region before: China |