CN216116967U - Gas extraction device for lithium ion battery - Google Patents
Gas extraction device for lithium ion battery Download PDFInfo
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- CN216116967U CN216116967U CN202122388756.6U CN202122388756U CN216116967U CN 216116967 U CN216116967 U CN 216116967U CN 202122388756 U CN202122388756 U CN 202122388756U CN 216116967 U CN216116967 U CN 216116967U
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- lithium ion
- ion battery
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- gas
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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
Abstract
The utility model relates to a lithium ion battery gas extraction device, which comprises a device main body, an extrusion part and a gas collection part; the device comprises a device main body, an extraction medium, an extrusion part, a traction part and a control part, wherein the device main body is provided with an accommodating groove, the accommodating groove is used for accommodating the extraction medium, the extrusion part is arranged in the accommodating groove and is provided with two extrusion plates which are oppositely arranged, the two extrusion plates are respectively used for extruding two opposite sides of the lithium ion battery, and the traction part is connected to at least one of the extrusion plates and is used for drawing the extrusion plates to move so as to enable the two extrusion plates to be close to or far away from each other; one end of the gas collecting part is arranged in an open way and can be arranged above the explosion-proof valve of the lithium ion battery by being operated so as to contain gas exhausted by the punctured explosion-proof valve. According to the lithium ion battery gas extraction device, the traction part is used for drawing the two extrusion plates to form or release extrusion on the lithium ion battery, so that the lithium ion battery can achieve the breathing effect, the gas in the battery can be completely discharged, and the device can fully extract the gas generated by the battery.
Description
Technical Field
The utility model relates to the technical field of lithium ion batteries, in particular to a gas extraction device of a lithium ion battery.
Background
As a reliable energy storage device, a lithium ion battery is widely used in the fields of new energy vehicles, energy storage, and the like. In the process of charging and discharging the lithium ion battery, lithium ions are separated and embedded between the positive electrode and the negative electrode, the electrolyte decomposition is completed, and the like, so that various gases are generated in the lithium ion battery, the battery expands in the thickness direction, and the gas collection device is required to be adopted to extract the gases in the battery for accurately measuring the gas quantity and components in the battery and evaluating the performance of the battery. The existing gas collecting device is simple, and gas in the battery cannot be completely removed when the gas is extracted, so that the total amount of the collected gas is inaccurate, and the performance evaluation of a worker on the battery is deviated.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to a lithium ion battery gas extraction device, which can fully discharge the gas inside the lithium ion battery, so as to effectively ensure the total amount of the gas collected inside the battery.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
a lithium ion battery gas extraction device comprises a device main body, an extrusion part and a gas collection part; wherein the content of the first and second substances,
the device main body is formed with a holding groove with an opening at the top, and the holding groove is used for holding an extraction medium;
the extrusion part is arranged in the accommodating groove and is provided with two extrusion plates which are oppositely arranged, the two extrusion plates are respectively used for extruding two opposite sides of the lithium ion battery, and a traction part is connected to at least one of the extrusion plates and is used for drawing the extrusion plates to move so that the two extrusion plates are close to or far away from each other to form or release the extrusion of the lithium ion battery;
one end of the gas receiving part is open and can be arranged above an explosion-proof valve of the lithium ion battery by being operated so as to contain gas exhausted by the punctured explosion-proof valve.
Further, the extraction medium is liquid paraffin.
Furthermore, the extrusion plate is fixedly arranged at the bottom of the accommodating groove;
the traction part is connected with the other extrusion plate.
Further, the traction part comprises a threaded sleeve and a rotating part with threads;
the threaded sleeve is connected with one extrusion plate;
the rotating piece is rotatably arranged on the device main body, one end of the rotating piece is in threaded connection with the threaded sleeve, and the other end of the rotating piece extends out of the device main body.
Furthermore, a through hole for the rotating part to penetrate out is formed on the device main body;
sealing parts for sealing the via holes are respectively arranged on the inner side and the outer side of the device main body;
the through hole is internally provided with a bearing used for supporting the rotating part, and the rotating part penetrates through the sealing part and the bearing.
Furthermore, the lithium ion battery gas extraction device also comprises a guide part for guiding the movement of the extrusion plate.
Further, the guide portion includes a guide post fixedly provided with respect to the apparatus main body;
the extrusion plate connected with the traction part is arranged on the guide post in a sliding manner.
Further, the traction part is a linear motor or a linear cylinder arranged on the device main body.
Further, the area of the extrusion surface of the extrusion plate is not less than the area of the extruded side surface of the lithium ion battery.
Furthermore, the gas collecting part is made of transparent materials, and scale marks are arranged on the gas collecting part and used for indicating the volume of the contained gas.
Compared with the prior art, the utility model has the following advantages:
(1) according to the lithium ion battery gas extraction device, the containing groove is formed in the device main body and used for containing the extraction medium, the extrusion parts are arranged to be the extrusion plates which are oppositely arranged on the two sides of the lithium ion battery, the two extrusion plates are drawn by the traction part to form or relieve extrusion on the lithium ion battery, the lithium ion battery can achieve the breathing effect, so that the gas in the battery can be completely discharged, and the device can fully extract the gas generated by the battery.
(2) The extraction medium adopts liquid paraffin, and the sealing performance of the environment where the lithium ion battery is located is effectively ensured.
(3) One of the extrusion plates is fixedly arranged at the bottom of the containing groove, and the traction part is connected with the other extrusion plate, so that the structure is simple, and the design and the processing are convenient.
(4) The traction part comprises a threaded sleeve and a rotating part with threads, the threaded sleeve is connected with the extrusion plate, one end of the rotating part is in threaded connection with the threaded sleeve, the threaded sleeve is adopted to conduct threaded connection, the cost is low, the structure is simple, and design and implementation are facilitated.
(5) The main body of the device is provided with a through hole so that the rotating piece can penetrate out, and the rotating piece can be operated from the outside conveniently to pull the extrusion plate to act; in addition, a sealing part is arranged on the device main body corresponding to the position of the through hole, so that the sealing performance of the inner space of the accommodating groove is ensured.
(6) The guide part is arranged, so that the smoothness of the movement of the extrusion plate can be improved.
(7) The guide part comprises a guide pillar, and is simple in structure and convenient to process.
(8) The area of the extrusion surface of the extrusion plate is not smaller than the area of the extruded side surface of the lithium ion battery, so that the lithium ion battery is not deformed in the extrusion process, and meanwhile, the gas in the battery can be fully discharged.
(9) The gas collecting part is made of transparent materials and is provided with scale marks, so that the volume of the extracted gas can be observed conveniently.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a lithium ion battery gas extraction device according to an embodiment of the present invention when a lithium ion battery is provided;
fig. 2 is a sectional view taken along line a-a of fig. 1.
Description of reference numerals:
1. a device main body; 11. accommodating grooves; 12. a via hole; 13. a bearing; 2. a pressing plate; 3. a traction part; 31. a threaded sleeve; 32. a rotating member; 4. a sealing part; 5. a gas collecting part; 6. a lithium ion battery; 61. an explosion-proof valve; 7. liquid paraffin; 8. a guide portion; 81. and (6) a guide pillar.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment relates to a lithium ion battery gas extraction device, which comprises a device body 1, an extrusion part and a gas collection part 5 in the integral structure.
Wherein, the device body 1 is formed with a receiving groove 11 with an open top, and the receiving groove 11 is used for receiving the extracting medium. The extrusion part is arranged in the accommodating groove 11, the extrusion part is provided with two extrusion plates 2 which are oppositely arranged, the two extrusion plates 2 are respectively used for extruding two opposite sides of the lithium ion battery 6, and the traction part 3 is connected on at least one of the extrusion plates 2. The traction part 3 is used for drawing the pressing plates 2 to move so as to enable the two pressing plates 2 to approach or separate from each other, and pressing or releasing the lithium ion batteries 6. The gas collecting portion 5 is open at one end and is manipulated to be disposed above the explosion-proof valve 61 of the lithium ion battery 6 to contain the gas discharged from the punctured explosion-proof valve 61.
The lithium ion battery gas extraction device of this embodiment is through setting up holding tank 11 on device main part 1 for hold and draw the medium, draw two stripper plates 2 through the traction part simultaneously and constitute or remove the extrusion to lithium ion battery 6, can make lithium ion battery 6 reach respiratory effect, thereby can make the inside gas of battery discharge completely, can make this device fully draw the produced gas of battery from this.
Based on the above design concept, an exemplary structure of the lithium ion battery gas extraction device of the present embodiment is shown in fig. 1 and 2, and as described above, the lithium ion battery gas extraction device of the present embodiment includes, in an overall structure, a device main body 1, a pressing portion, and a gas collecting portion 5.
The device body 1 is structured as shown in fig. 1 to 2, and as described above, the device body 1 of the present embodiment is formed with a receiving groove 11 with an open top, and the receiving groove 11 is used for receiving an extraction medium. Further, in order to make the structural design and processing of the apparatus body 1 easier, as a preferred embodiment, the apparatus body 1 in the present embodiment uses a metal groove having a quadrangular shape, but the shape of the apparatus body 1 is not limited to, for example, a triangular shape or a circular shape.
In addition, the extraction medium of the present embodiment specifically uses liquid paraffin 7, and the lithium ion battery 6 is placed in the accommodating tank 11 and immersed in the liquid paraffin 7. By adopting the liquid paraffin 7, the lithium ion battery 6 can be positioned in a sealed environment, so that the gas discharged by the lithium ion battery 6 can be prevented from being mixed with external gas, and the accuracy of gas splitting can be prevented from being influenced.
Further, as shown in fig. 2, a through hole 12 through which a rotating member 32 described below is passed is further opened at one side of the apparatus main body 1, and a bearing 13 supporting the rotating member 32 is provided in the through hole 12 in order to improve a rotating effect of the rotating member 32. At this time, in order to prevent the liquid paraffin 7 from leaking out through the through hole 12, sealing portions 4 for sealing the through hole 12 are provided on both the inside and outside of the apparatus main body 1.
In the present embodiment, as shown in fig. 1 and 2, as a preferred embodiment, the sealing portion 4 is provided as a sealing ring, and a sealing structure such as a sealing strip may be used.
As shown in fig. 1 and 2, the aforementioned pressing portion has two pressing plates 2 arranged oppositely, and the two pressing plates 2 are used to press opposite sides of the lithium ion battery 6, respectively. Moreover, in order to improve the use effect, the area of the extrusion surface of each extrusion plate 2 is not less than the area of the extruded side surface of the lithium ion battery 6, so that the lithium ion battery 6 is not deformed in the extrusion process, and meanwhile, the gas in the battery can be fully discharged.
In the present embodiment, as a preferred embodiment, based on the state shown in fig. 2, the left compression plate 2 is fixed to the compression plate 2 on the right side of the bottom of the housing groove 11, and the traction portion 3 is connected to the compression plate 2. In this way, the traction unit 3 pulls the right compression plate 2 to move toward the left compression plate 2, thereby compressing the lithium ion battery 6 between the two compression plates 2.
At this time, in order to improve the smoothness of the sliding of the right pressing plate 2, the extraction device of the present embodiment further includes a guide portion that guides the movement of the pressing plate 2. As a specific embodiment, the guide portion of the present embodiment includes a guide post 81 fixedly provided with respect to the apparatus main body 1, and the right pressing plate 2 is slidably provided on the guide post 81.
As shown in fig. 2, the guide posts 81 of the present embodiment are specifically disposed on the left pressing plate 2, and the guide posts 81 are specifically four at intervals. The guide post 81 may be provided on the apparatus main body 1 in addition to the left-hand pressing plate 2. In addition, the number of the guide posts 81 may be one, two or other than four.
In this embodiment, as another preferred embodiment, the two pressing plates 2 of the pressing part may be respectively connected with the traction part 3 so that both the pressing plates 2 can slide. In this case, the guide posts 81 may be provided on the side walls of the apparatus main body 1 corresponding to the respective pressing plates 2.
As a specific embodiment, as shown in fig. 2, the aforementioned traction part 3 includes a threaded sleeve 31 and a rotating member 32 having threads. Here, as shown in the state of fig. 1, the screw sleeve 31 is connected to the right pressing plate 2, and the rotating member 32 is rotatably provided on the apparatus main body 1. One end of the rotating member 32 is screwed to the threaded sleeve 31, the other end of the rotating member 32 protrudes outside the apparatus main body 1 through the through hole 12, and the rotating member 32 is disposed through the sealing portion 4 and the bearing 13. Therefore, the rotation member 32 can be rotated to drive the screw sleeve 31 to move, so that the right compression plate 2 can be pulled to move, and compression of the lithium ion battery 6 can be formed or released.
In the present embodiment, as shown in fig. 2, as a preferred embodiment, the screw sleeve 31 is screwed to the compression plate 2 by a screw. But not limited to this fixing mode, welding, pin connection and other modes can be adopted to complete the fixed connection between the two. In addition, the traction unit 3 may be a linear motor or a linear cylinder provided in the apparatus main body 1 as another embodiment (not shown) in addition to the above-described configuration.
In a preferred embodiment, the gas collecting portion 5 is made of a transparent material, and the gas collecting portion 5 is provided with scale marks so as to observe the volume of the extracted gas. The gas trap 5 is made of plastic or glass, for example. Furthermore, existing measuring cylinders or measuring cups, or other transparent and graduated objects, may also be used directly.
When the lithium ion battery extraction device of the present embodiment is used, the lithium ion battery 6 is placed in the accommodation groove 11, and the lithium ion battery 6 is placed in close contact with the left pressing plate 2. Then, the accommodating groove 11 is filled with liquid paraffin 7, the gas receiving part 5 is placed in the liquid paraffin 7 in an inverted mode, the liquid paraffin 7 is filled, and then the gas moves to the top of the explosion-proof valve 61 of the lithium ion battery 6, so that the gas in the lithium ion battery 6 can smoothly enter the gas receiving part 5 to be collected.
Subsequently, the explosion-proof valve 61 of the lithium ion battery 6 is punctured by a hand with a needle, the rotating member 32 is rotated clockwise to cause the right-side pressing plate 2 to press the lithium ion battery 6 leftward, and then the rotating member 32 is rotated counterclockwise to release the pressing of the lithium ion battery 6, so that the liquid paraffin 7 enters the inside of the lithium ion battery 6 through the explosion-proof valve 61, and the gas is discharged. The rotating member 32 is repeatedly rotated clockwise and counterclockwise to enable the lithium ion battery 6 to achieve the breathing effect, so that the liquid paraffin 9 fully flows into the lithium ion battery 6, the gas is further emptied, and the total gas amount can be accurately detected through the measuring cylinder 11. In addition, the gas collected in the gas collecting part 5 can be extracted for subsequent detection.
The lithium ion battery gas extraction device of this embodiment, through adopting above-mentioned structure, can make the inside gas of battery completely discharge, can make this device fully extract the produced gas of battery from this.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a lithium ion battery gas extraction element which characterized in that: comprises a device main body (1), a squeezing part and an air collecting part (5); wherein the content of the first and second substances,
the device main body (1) is formed with an open-topped accommodation groove (11), the accommodation groove (11) is used for accommodating an extraction medium;
the extrusion part is arranged in the accommodating groove (11) and is provided with two extrusion plates (2) which are oppositely arranged, the two extrusion plates (2) are respectively used for extruding two opposite sides of the lithium ion battery (6), a traction part (3) is connected to at least one of the extrusion plates (2), and the traction part (3) is used for drawing the extrusion plates (2) to move so that the two extrusion plates (2) are close to or far away from each other to form or relieve the extrusion of the lithium ion battery (6);
one end of the gas collecting part (5) is open and can be arranged above an explosion-proof valve (61) of the lithium ion battery (6) in a manipulated mode so as to contain gas discharged by the punctured explosion-proof valve (61).
2. The lithium ion battery gas extraction device of claim 1, wherein:
the extraction medium adopts liquid paraffin (7).
3. The lithium ion battery gas extraction device of claim 1, wherein:
the extrusion plate (2) is fixedly arranged at the bottom of the accommodating groove (11);
the traction part (3) is connected with the other extrusion plate (2).
4. The lithium ion battery gas extraction device of claim 3, wherein:
the traction part (3) comprises a threaded sleeve (31) and a rotating part (32) with threads;
the screw sleeve (31) is connected with one extrusion plate (2) of the screw sleeve;
the rotating piece (32) is rotatably arranged on the device main body (1), one end of the rotating piece (32) is in threaded connection with the threaded sleeve (31), and the other end of the rotating piece extends out of the device main body (1).
5. The lithium ion battery gas extraction device of claim 4, wherein:
a through hole (12) for the rotating piece (32) to penetrate through is formed in the device main body (1);
sealing parts (4) for sealing the through holes (12) are respectively arranged on the inner side and the outer side of the device main body (1);
be equipped with in via hole (12) and be used for supporting bearing (13) of rotation piece (32), it passes to rotate piece (32) sealing portion (4) with bearing (13) set up.
6. The lithium ion battery gas extraction device of claim 1, wherein:
the lithium ion battery gas extraction device further comprises a guide part for guiding the movement of the extrusion plate (2).
7. The lithium ion battery gas extraction device of claim 6, wherein:
the guide part (8) comprises a guide post (81) fixedly arranged relative to the device main body (1);
the extrusion plate (2) connected with the traction part (3) is arranged on the guide post (81) in a sliding manner.
8. The lithium ion battery gas extraction device of claim 1, wherein:
the traction part (3) is a linear motor or a linear cylinder arranged on the device main body (1).
9. The lithium ion battery gas extraction device of claim 1, wherein:
the area of the extrusion surface of the extrusion plate (2) is not less than the area of the extruded side surface of the lithium ion battery (6).
10. The lithium ion battery gas extraction device of any one of claims 1 to 9, wherein:
the gas collecting part (5) is made of transparent materials, and scale marks are arranged on the gas collecting part (5) and used for indicating the volume of the contained gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122388756.6U CN216116967U (en) | 2021-09-29 | 2021-09-29 | Gas extraction device for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122388756.6U CN216116967U (en) | 2021-09-29 | 2021-09-29 | Gas extraction device for lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216116967U true CN216116967U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122388756.6U Active CN216116967U (en) | 2021-09-29 | 2021-09-29 | Gas extraction device for lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216116967U (en) |
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2021
- 2021-09-29 CN CN202122388756.6U patent/CN216116967U/en active Active
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