CN211505815U - Gas collecting device for battery test and battery cover plate - Google Patents
Gas collecting device for battery test and battery cover plate Download PDFInfo
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- CN211505815U CN211505815U CN201922457832.7U CN201922457832U CN211505815U CN 211505815 U CN211505815 U CN 211505815U CN 201922457832 U CN201922457832 U CN 201922457832U CN 211505815 U CN211505815 U CN 211505815U
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Abstract
The utility model relates to a power battery technical field discloses a gas collecting device and battery apron that battery test was used, gas collecting device (10) that battery test was used are including setting up gas guide component (12) and the gas collection body (14) on battery case (20), gas collection body (14) have the collection cavity that can hold gas, gas guide component (12) set up to be can with the gas of the inside of battery case (20) is leading-in collect in the cavity. The gas collecting device for the battery test can lead out the gas in the battery at any time, so that the components of the gas generated in the battery and the volume of the generated gas can be detected in real time. The gas collecting device for the battery test is arranged on the battery cover plate, so that the analysis of side reactions in the battery is facilitated, and guide parameters are provided for further improving the safety of the battery.
Description
Technical Field
The utility model relates to a power battery technical field specifically relates to a gas collecting device and battery apron of battery test usefulness.
Background
Taking a lithium ion battery as an example, during the testing and using processes of the lithium ion battery, certain side reactions occur, and a certain amount of gas is generated, so that the volume expansion of the lithium ion battery is caused, and the consequences of battery explosion, failure and the like are caused in severe cases. By studying the components of the gas generated by the lithium ion battery, the side reaction in the battery can be analyzed, and thus a method for inhibiting the gas generation of the lithium ion battery can be fundamentally found. Therefore, it is important to guide the safety application of the lithium ion battery to explore the components of the gas generated inside the lithium ion battery.
In the current research, a destructive method is generally adopted to disassemble a tested battery and further analyze the internal gas components, however, the real-time gas collection cannot be realized in the testing process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that the inside produced gas of the unable real-time detection battery that prior art exists, providing a gas collecting device that battery test was used, this gas collecting device that battery test was used can derive the inside gas of battery at any time to can realize the inside produced gaseous composition of real-time detection battery and the gaseous volume that produces.
In order to achieve the above object, the utility model provides an aspect provides the gas collecting device that battery test was used, the gas collecting device that battery test was used is including setting up the gas guide subassembly and the gas collection body on battery case, the gas collection body has the collection cavity that can hold gas, the gas guide subassembly sets up to be can with the gas of battery case's inside is leading-in collect in the cavity.
According to the technical scheme, the gas guide assembly and the gas collecting body are arranged, so that gas generated in the battery can be guided out at any time, the components of the gas generated in the battery can be tested in real time, and the volume of the generated gas can be measured in real time.
Preferably, the battery shell is provided with a mounting hole;
the air guide assembly comprises an air guide tube, and two ends of the air guide tube are respectively connected to the mounting hole and the collecting cavity.
Preferably, the air guide assembly comprises a control valve arranged on the air guide tube, and the control valve can control the circulation state of fluid in the air guide tube.
Preferably, the control valve comprises a one-way valve.
Preferably, the control valve is arranged at the end part of the air guide pipe close to the mounting hole;
the air guide assembly comprises a sealing mechanism arranged at the mounting hole, and the sealing mechanism is arranged to enable the control valve to be connected to the mounting hole in a sealing mode.
Preferably, the sealing mechanism comprises an air guide column arranged at the mounting hole, a port of the air guide column close to the mounting hole is tightly connected to the periphery of the mounting hole, and the air guide column can be inserted into the control valve.
Preferably, the wall surfaces of the gas guiding column and the control valve which face each other are provided with threads which are matched with each other.
Preferably, the gas collection body comprises a gas bag, and the gas bag is provided with a gas inlet which can be communicated with the gas guide tube.
Preferably, its characterized in that, battery case includes the battery apron, be provided with explosion-proof hole and notes liquid hole on the battery apron, the mounting hole be explosion-proof hole or annotate the liquid hole.
The utility model discloses the second aspect provides a battery cover plate, be provided with on the battery cover plate the utility model provides a gas collecting device for battery test. Through set up on the battery apron the utility model provides a gas collecting device for battery test can derive the inside gas of battery to can the inside gaseous composition of real-time detection battery and the gaseous volume that real-time measurement produced, like this, be favorable to the inside side reaction of analysis battery, provide the guide parameter for the security that further improves the battery.
Drawings
Fig. 1 is a schematic perspective view of a gas collecting device for battery test according to a preferred embodiment of the present invention;
fig. 2 is a schematic view showing a disassembled structure of the gas collecting device for battery test shown in fig. 1.
Description of the reference numerals
10-gas collection device for battery test; 12-an air guide assembly; 120-an airway tube; 122-a control valve; 124-a sealing mechanism; 110-a gas-conducting column; 14-a gas collection body; 20-a battery housing; 22-battery cover plate; 24-a battery case; 26-mounting holes.
Detailed Description
In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left and right" generally refers to the understanding of the scope of the drawings and the practical application, and "inner and outer" refer to the inner and outer of the outline of the component.
The utility model provides a gas collecting device that battery test was used, gas collecting device 10 that battery test was used is including setting up gas guide component 12 and the gas collection body 14 on battery case 20, and the gas collection body 14 has the collection cavity that can hold gas, and gas guide component 12 sets up to leading-in the gas of the inside that can be with battery case 20 in the collection cavity. The gas guide assembly 12 and the gas collector 14 are arranged, so that gas generated in the battery can be guided out at any time, the components of the gas generated in the battery can be tested in real time, and the volume of the generated gas can be measured in real time, therefore, the side reaction generated in the battery can be better analyzed and researched, meanwhile, the gas in the battery can be guided out, and the expansion analysis of the battery can be facilitated, for example, the expansion of a pole piece can be analyzed by calculating the thickness difference of the battery before gas generation and after gas exhaust of the battery. It should be noted that the battery generates gas during the normal use and the detection of the relevant performance, and in addition, the gas introduced into the collection chamber can be introduced into a detection device such as a gas chromatograph for analysis and detection.
As shown in fig. 1 and 2, a mounting hole 26 may be formed in the battery case 20; the gas guide assembly 12 may include a gas guide tube 120, and both ends of the gas guide tube 120 may be connected to the mounting hole 26 and the collecting chamber, respectively, so that the gas guide tube 120 may guide the gas inside the battery into the gas collecting body 14.
It is understood that the battery case 20 includes a battery case 24 and a battery cover 22 covering the top end of the battery case 24, that is, the battery case 20 may include the battery cover 22. In addition, the battery cover plate 22 may be provided with an explosion-proof hole and a liquid injection hole, and the mounting hole 26 may be the explosion-proof hole or the liquid injection hole, that is, the explosion-proof hole or the liquid injection hole provided in the battery cover plate 22 may be the mounting hole 26.
In addition, a control valve 122 can be arranged on the gas guide tube 120, and the control valve 122 can control the circulation state of the fluid in the gas guide tube 120, so that gas collection is facilitated, and the interior of the battery is not easily affected by external gas. Preferably, the control valve 122 may comprise a one-way valve, for example, a one-way valve may be provided on the airway tube 120.
There is no particular limitation in the position of the control valve 122 on the air duct 120 as long as the control valve 122 can perform a control function, and preferably, the control valve 122 may be disposed at an end of the air duct 120 near the mounting hole 26. The gas guide assembly 12 may include a sealing mechanism 124 disposed at the mounting hole 26, the sealing mechanism 124 may be configured to enable the control valve 122 to be hermetically connected to the mounting hole 26, and by providing the sealing mechanism 124, external air may not easily enter the inside of the battery, thereby further ensuring the safety of the battery when conducting gas discharge.
As shown in fig. 2, the sealing mechanism 124 may include an air guide column 110 disposed at the mounting hole 26, a port of the air guide column 110 near the mounting hole 26 is closely connected to the periphery of the mounting hole 26, for example, the port of the air guide column 110 near the mounting hole 26 may be welded to the periphery of the mounting hole 26, and the air guide column 110 may be inserted into the control valve 122. It will be appreciated that the two ends of the gas guiding column 110 are open ends.
In order to facilitate the connection between the gas column 110 and the control valve 122, the walls of the gas column 110 and the control valve 122 facing each other may be provided with threads that are engaged with each other, so that the control valve 122 may be screwed to the gas column 110, and at the same time, the control valve 122 may be hermetically connected to the gas column 110 by providing the threads engaged with each other.
Additionally, the gas collection body 14 may include a bladder having an inlet port capable of communicating with the airway tube 120. The gas bag is selected as the gas collecting body 14, so that gas can be collected, and the volume of the collected gas can be directly read according to the volume change of the gas bag. After the gas has been collected, the control valve 122 is closed, the bladder is removed and the gas in the bladder is directed to a relevant detection device, such as a gas chromatograph.
The utility model also provides a battery apron can set up on battery apron 22 the utility model provides a gas collecting device 10 for battery test. Through setting up on battery apron 22 the utility model provides a gas collecting device 10 for battery test can derive the inside gas of battery to can the inside gaseous composition of real-time detection battery and the gaseous volume that real-time measurement produced, like this, be favorable to the inside side reaction of analysis battery, provide the guide parameter for the security that further improves the battery.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. The gas collecting device for the battery test is characterized in that the gas collecting device (10) for the battery test comprises a gas guide assembly (12) and a gas collecting body (14), wherein the gas guide assembly (12) and the gas collecting body (14) are arranged on a battery shell (20), the gas collecting body (14) is provided with a collecting cavity capable of containing gas, and the gas guide assembly (12) is arranged to be capable of guiding the gas in the battery shell (20) into the collecting cavity.
2. The gas collecting device for battery test as claimed in claim 1, wherein the battery case (20) is provided with a mounting hole (26);
the air guide assembly (12) comprises an air guide tube (120), and two ends of the air guide tube (120) are respectively connected to the mounting hole (26) and the collecting chamber.
3. The gas collecting device for the battery test according to claim 2, wherein the gas guide assembly (12) comprises a control valve (122) arranged on the gas guide tube (120), and the control valve (122) can control the circulation state of the fluid in the gas guide tube (120).
4. The gas collecting device for battery test as claimed in claim 3, wherein the control valve (122) comprises a check valve.
5. The gas collecting device for battery test according to claim 3, wherein the control valve (122) is disposed at an end of the gas guiding tube (120) near the mounting hole (26);
the air guide assembly (12) comprises a sealing mechanism (124) arranged at the mounting hole (26), and the sealing mechanism (124) is arranged to enable the control valve (122) to be connected with the mounting hole (26) in a sealing mode.
6. The gas collecting device for battery test according to claim 5, wherein the sealing mechanism (124) comprises a gas guiding column (110) disposed at the mounting hole (26), a port of the gas guiding column (110) near the mounting hole (26) is tightly connected to the periphery of the mounting hole (26), and the gas guiding column (110) can be inserted into the control valve (122).
7. The gas collecting device for battery test according to claim 6, wherein the wall surfaces of the gas guiding column (110) and the control valve (122) facing each other are provided with threads that are engaged with each other.
8. The gas collecting device for battery tests according to claim 2, characterized in that the gas collecting body (14) comprises a gas bag having a gas inlet capable of communicating with the gas duct (120).
9. The gas collecting device for battery tests according to any one of claims 2 to 8, characterized in that the battery case (20) comprises a battery cover plate (22), the battery cover plate (22) is provided with an explosion-proof hole and a liquid injection hole, and the mounting hole (26) is the explosion-proof hole or the liquid injection hole.
10. A battery cover plate, characterized in that the battery cover plate (22) is provided with a gas collecting device (10) for battery test according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922457832.7U CN211505815U (en) | 2019-12-30 | 2019-12-30 | Gas collecting device for battery test and battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922457832.7U CN211505815U (en) | 2019-12-30 | 2019-12-30 | Gas collecting device for battery test and battery cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211505815U true CN211505815U (en) | 2020-09-15 |
Family
ID=72396987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922457832.7U Active CN211505815U (en) | 2019-12-30 | 2019-12-30 | Gas collecting device for battery test and battery cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211505815U (en) |
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2019
- 2019-12-30 CN CN201922457832.7U patent/CN211505815U/en active Active
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