CN211042965U - Device for detecting welding strength of periphery of square-shell lithium battery - Google Patents
Device for detecting welding strength of periphery of square-shell lithium battery Download PDFInfo
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- CN211042965U CN211042965U CN201921479927.2U CN201921479927U CN211042965U CN 211042965 U CN211042965 U CN 211042965U CN 201921479927 U CN201921479927 U CN 201921479927U CN 211042965 U CN211042965 U CN 211042965U
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Abstract
The utility model discloses a peripheral welding strength detection device of square shell lithium cell, including spacing frame, gas nozzle head, removal screw rod and trachea, wherein: the limiting frame comprises a bottom plate, a first side plate and a second side plate, and the first side plate and the second side plate are mutually parallel and fixed on the bottom plate; an accommodating space is formed between the first side plate and the second side plate and used for accommodating a battery; the movable screw rod is installed on the first side plate in a threaded mode, the movable screw rod is rotated to enable the movable screw rod to move towards the direction close to or far away from the second side plate, the air faucet head is installed at one end, close to the second side plate, of the movable screw rod, and the air pipe is communicated with the air faucet head. The utility model provides a peripheral welding strength detection device of square shell lithium cell can realize effectively that battery case body tympanites etc. abnormal factor interference to the peripheral welding quality test of welding of square shell lithium ion, and the result reliability of surveying is high, frock simple structure simultaneously, the operation of being convenient for.
Description
Technical Field
The utility model relates to a lithium cell check out test set technical field especially relates to a peripheral welding strength detection device of square shell lithium cell.
Background
Lithium ion batteries have become the mainstream choice for automotive power batteries because of their advantages of high energy density, long cycle life, and the like. In the production process of the square lithium ion power battery, the welding quality of the cover plate and the shell has serious influence on the safety of the lithium battery, if the welding strength is not enough, the risk of liquid leakage is caused slightly, and if the welding strength is not enough, the leakage is caused seriously, and unnecessary property and personnel loss is caused. Therefore, in order to ensure the performance stability and safety of the battery, the welding strength of the periphery is effectively detected in the production process of the square-shell lithium battery.
At present, in order to improve energy density, the thickness of a battery shell is reduced, the detection device cannot meet the requirement of welding strength detection in the past, the shell is frequently expanded and deformed, and a welding position or a shell part is pulled to cause air leakage.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem existing in the background art, the utility model provides a peripheral welding strength detection device of square shell lithium cell.
The utility model provides a peripheral welding strength detection device of square shell lithium cell, including spacing frame, nozzle tip, removal screw rod and trachea, wherein:
the limiting frame comprises a bottom plate, a first side plate and a second side plate, and the first side plate and the second side plate are mutually parallel and fixed on the bottom plate; an accommodating space is formed between the first side plate and the second side plate and used for accommodating a battery;
remove the screw rod and pass through the screw thread mode and install on first curb plate, and rotate and remove the screw rod and make and remove the screw rod to being close to or keeping away from the second curb plate direction and remove, the air cock head is installed in the one end that removes the screw rod and be close to the second curb plate, trachea and air cock head intercommunication, place the battery in accommodation space in the course of the work, it makes the air cock head to remove to being close to the battery direction to rotate to remove the screw rod, air cock head extrusion battery case and trompil at the battery case outer wall, aerating device and trachea intercommunication, gaseous from the air cock head fill the battery case in detect battery case's peripheral welding, if peripheral welding and not the fracture gas leakage then.
As a further optimized proposal of the utility model, the end part of the air nozzle head is conical.
As a further preferred embodiment of the present invention, the movable screw is provided with an elastic gasket at the end connected with the air faucet head.
As a further optimized proposal of the utility model, one end of the movable screw rod away from the air nozzle head is provided with a handle.
As a further optimized proposal of the utility model, the air pipe is connected with a pressure regulating valve.
As the utility model discloses the scheme of further optimization still includes the trachea connector, and the one end of keeping away from the nozzle head at the removal screw rod is installed to the trachea connector, and the trachea is connected with the trachea connector.
As the utility model discloses the scheme of further optimization, it has the gas pocket to remove the screw rod along its radial division, the one end and the air cock head intercommunication of gas pocket, the other end and the trachea adapter intercommunication of gas pocket.
As the utility model discloses the scheme of further optimization, the back of spacing frame is equipped with spacing backplate, and spacing backplate is connected with first curb plate and second curb plate.
As the utility model discloses the scheme of further optimization, the top of spacing frame is equipped with the roof, and the roof is connected with first curb plate and second curb plate.
The utility model discloses in, the peripheral welding strength detection device of square shell lithium cell that provides can realize effectively that the battery case body tympanites etc. abnormal factor interference to the peripheral welding quality test that welds of square shell lithium ion, is avoided, and the result reliability of surveying is high, and frock simple structure is simple simultaneously, the operation of being convenient for.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is the schematic view of the structure of the movable screw rod of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The device for detecting the welding strength of the periphery of the square shell lithium battery comprises a limiting frame 1, a gas nozzle head 2, a movable screw rod 3 and a gas pipe 4, wherein:
the limiting frame 1 comprises a bottom plate 10, a first side plate 11 and a second side plate 12, wherein the first side plate 11 and the second side plate 12 are mutually fixed on the bottom plate 10 in parallel; an accommodating space is formed between the first side plate 11 and the second side plate 12 for accommodating a battery;
the movable screw 3 is installed on the first side plate 11 in a threaded mode, the movable screw 3 is rotated to enable the movable screw 3 to move towards a direction close to or far away from the second side plate 12, the end part of the air nozzle head 2 is conical, the air nozzle head 2 is installed at one end, close to the second side plate 12, of the movable screw 3, the air nozzle head 2 can be installed on the movable screw 3 in a welding mode, an elastic gasket 5 is arranged at one end, connected with the air nozzle head 2, of the movable screw 3, specifically, a connecting annular groove is formed in the end face of the movable screw 3, the elastic gasket 5 is fixed in the connecting annular groove, and the air pipe 4 is communicated with the air;
the air pipe connector 8 is arranged at one end, far away from the air nozzle head 2, of the movable screw rod 3, the connector 8 is arranged on the certain screw rod 3 in a threaded mode, and the air pipe 4 is connected with the air pipe connector 8;
the movable screw rod 3 is provided with an air hole 30 along the radial direction, one end of the air hole 30 is communicated with the air nozzle head 2, and the other end of the air hole 30 is communicated with the air pipe connector 8;
a handle 6 is arranged at one end of the movable screw rod 3 far away from the air nozzle head 2;
the air pipe 4 is connected with a pressure regulating valve 7;
the back of the limiting frame 1 is provided with a limiting back plate 9, and the limiting back plate is connected with a first side plate 11 and a second side plate 12;
the top of spacing frame 1 is equipped with roof 13, and roof 13 is connected with first curb plate 11 and second curb plate 12.
In the working process of the embodiment, random sampling is performed from a batch of square lithium battery shells, the sampled battery shells are subjected to sealing treatment on a liquid injection port and a safety valve, the sealed battery shells are placed in the accommodating space of the limiting frame 1, the air nozzle head 2 is driven to move towards the square state close to the battery shells by manually rotating the moving screw 3, the air nozzle head 2 opens a hole in the outer wall of the battery shells and extends into the battery shells, the moving screw 3 is continuously rotated to enable the elastic gasket 5 to be tightly attached to the outer wall of the battery shells to ensure good sealing, the air pipe 4 is connected with an external inflating device, the pressure regulating valve 7 is opened to inflate and pressurize the air pipe 4 to 1.1mpa, and the welding quality is reliable if no cracking or air leakage occurs in the peripheral welding process.
In this embodiment, it is preferable that the end of the air nozzle head 2 is tapered, so that the air nozzle head 2 can conveniently open a hole on the outer wall of the battery case when moving towards the direction close to the battery case, and the air nozzle head 2 can conveniently extend into the battery case.
In this embodiment, it is preferable that an elastic gasket 5 is disposed at an end of the movable screw rod 3 connected to the air nozzle head 2, so as to increase the sealing performance between the air nozzle head 2 and the outer wall of the battery case during the inflation process, thereby avoiding air leakage.
In the present embodiment, it is preferable that the end of the movable screw rod 3 away from the air nozzle head 2 is provided with a handle 6, so that the relative operator can rotate the movable screw rod 3 conveniently.
In the present embodiment, it is preferable that the gas pipe 4 is connected with a pressure regulating valve 7 for observing the pressure value of the gas in the battery case, so as to facilitate detection.
Preferred in this embodiment, still include trachea connector 8, trachea connector 8 installs the one end of keeping away from nozzle head 2 at removal screw rod 3, and trachea 4 is connected with trachea connector 8, avoids rotating the in-process trachea 4 of removing screw rod 3 and disturbs.
In the present embodiment, it is preferable that the moving screw 3 is opened with an air hole 30 along a radial direction thereof, one end of the air hole 30 is communicated with the air nozzle head 2, and the other end of the air hole 30 is communicated with the air pipe connector 8.
In this embodiment, preferably, a limiting back plate 9 is arranged on the back surface of the limiting frame 1, the limiting back plate is connected with the first side plate 11 and the second side plate 12, and the limiting back plate 9 limits the depth of the battery extending into the limiting frame 1.
In this embodiment, preferably, the top plate 13 is arranged at the top of the limiting frame 1, and the top plate 13 is connected with the first side plate 11 and the second side plate 12, so that if the battery case explodes, fragments are prevented from splashing from the top of the accommodating space between the first side plate 11 and the second side plate 12, and workers are protected.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a peripheral welding strength detection device of square shell lithium cell which characterized in that, includes spacing frame (1), air cock head (2), removes screw rod (3) and trachea (4), wherein:
the limiting frame (1) comprises a bottom plate (10), a first side plate (11) and a second side plate (12), and the first side plate (11) and the second side plate (12) are fixed on the bottom plate (10) in parallel; an accommodating space is formed between the first side plate (11) and the second side plate (12) and is used for accommodating batteries;
the movable screw rod (3) is installed on the first side plate (11) in a threaded mode, the movable screw rod (3) is rotated to enable the movable screw rod (3) to move towards the direction close to or far away from the second side plate (12), the air nozzle head (2) is installed at one end, close to the second side plate (12), of the movable screw rod (3), and the air pipe (4) is communicated with the air nozzle head (2).
2. The apparatus for testing the welding strength of the periphery of a square-shaped lithium battery as claimed in claim 1, wherein the end of the air nozzle head (2) is tapered.
3. The apparatus for testing the welding strength of the periphery of a square-shaped lithium battery as claimed in claim 1, wherein the end of the movable screw (3) connected to the air nozzle head (2) is provided with an elastic gasket (5).
4. The apparatus for testing the welding strength of the periphery of a square-shaped lithium battery as claimed in claim 1, wherein a handle (6) is provided at an end of the movable screw (3) away from the air nozzle head (2).
5. The apparatus for testing the welding strength of the periphery of a square-shaped lithium battery as claimed in claim 1, wherein the gas pipe (4) is connected to a pressure regulating valve (7).
6. The device for detecting the welding strength of the periphery of the square-shell lithium battery as claimed in claim 1, further comprising a gas pipe connector (8), wherein the gas pipe connector (8) is installed at one end of the movable screw rod (3) far away from the gas nozzle head (2), and the gas pipe (4) is connected with the gas pipe connector (8).
7. The device for detecting the welding strength of the periphery of the square-shell lithium battery as claimed in claim 6, wherein the movable screw (3) is provided with an air hole (30) along the radial direction thereof, one end of the air hole (30) is communicated with the air nozzle head (2), and the other end of the air hole (30) is communicated with the air pipe connector (8).
8. The device for detecting the welding strength of the periphery of the square-shell lithium battery as claimed in claim 1, wherein a limiting back plate (9) is arranged on the back surface of the limiting frame (1), and the limiting back plate is connected with the first side plate (11) and the second side plate (12).
9. The device for detecting the welding strength of the periphery of a square-shell lithium battery as claimed in claim 1, wherein a top plate (13) is arranged at the top of the limiting frame (1), and the top plate (13) is connected with the first side plate (11) and the second side plate (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479927.2U CN211042965U (en) | 2019-09-05 | 2019-09-05 | Device for detecting welding strength of periphery of square-shell lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479927.2U CN211042965U (en) | 2019-09-05 | 2019-09-05 | Device for detecting welding strength of periphery of square-shell lithium battery |
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| Publication Number | Publication Date |
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| CN211042965U true CN211042965U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921479927.2U Active CN211042965U (en) | 2019-09-05 | 2019-09-05 | Device for detecting welding strength of periphery of square-shell lithium battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033814A (en) * | 2020-08-19 | 2020-12-04 | 合肥国轩高科动力能源有限公司 | Multifunctional pressing tool for lithium battery |
| CN112362491A (en) * | 2021-01-14 | 2021-02-12 | 南京暮恪信息科技有限公司 | Automatic intelligent detection system for lithium battery quality |
-
2019
- 2019-09-05 CN CN201921479927.2U patent/CN211042965U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033814A (en) * | 2020-08-19 | 2020-12-04 | 合肥国轩高科动力能源有限公司 | Multifunctional pressing tool for lithium battery |
| CN112362491A (en) * | 2021-01-14 | 2021-02-12 | 南京暮恪信息科技有限公司 | Automatic intelligent detection system for lithium battery quality |
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