A battery case weld seam detection device

Abstract

The utility model relates to battery shell detection field, concretely relates to a kind of battery shell weld detection device, comprising: positioning water tank, it includes the cavity of water body and the positioning block suitable for preliminary positioning battery shell in cavity;Ventilation mechanism, it includes the insert suitable for inserting battery shell, for by insert into high-pressure gas to battery shell inside, the positioning block is below water body liquid level in cavity;The ventilation mechanism is located above positioning block, the positioning block is provided with the hole-avoiding interference of avoiding with insert, and the end of the insert close to positioning block is provided with insertion end, and the hole-avoiding interference is located in the middle portion above positioning block;The insertion end is provided with the air hole through insertion end in vertical direction, for the ventilation to battery shell cavity inside.The utility model provides a kind of battery shell weld detection device, improves the accuracy of detection.

Description

Technical Field

[0001] This utility model relates to the field of battery casing inspection, specifically to a battery casing weld inspection device. Background Technology

[0002] The battery casing needs to be welded during the production process, and the welds need to be inspected after production to ensure they are strong.

[0003] Currently, the method for inspecting the strength of battery casing welds is to have inspectors visually assess the regularity of the welds. This method has a large error margin and presents a technical problem of significant error during inspection. There is an urgent need to design a battery casing weld inspection device.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0005] The purpose of this invention is to provide a battery casing weld inspection device to solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A battery casing weld inspection device, comprising:

[0008] A positioning water tank, comprising a cavity for holding water and a positioning block within the cavity suitable for initial positioning of the battery casing;

[0009] The ventilation mechanism includes an insert suitable for insertion into the battery casing, for introducing high-pressure gas into the battery casing through the insert. When the bottom of the battery casing contacts the side of the positioning block 12, a sealed cavity is formed between the battery casing and the positioning block 12. The ventilation mechanism 3 introduces high-pressure gas into the sealed cavity formed between the battery casing and the positioning block 12.

[0010] The positioning block is located below the water level inside the cavity;

[0011] The ventilation mechanism is located above the positioning block;

[0012] The positioning block is provided with a clearance hole to avoid interference with the insert;

[0013] The insert has an insertion end at the end near the positioning block.

[0014] In one alternative embodiment, the clearance hole is located in the middle of the upper part of the positioning block;

[0015] The insert has a vertically extending vent hole for venting air into the battery casing cavity.

[0016] In one optional embodiment, the detection device further includes a connector for connecting the positioning water tank and the aeration mechanism;

[0017] One end of the connector is connected to the end of the ventilation mechanism, and the other end is connected to the side wall of the positioning water tank.

[0018] In one optional embodiment, the detection device further includes a positioning mechanism for further positioning the battery casing;

[0019] The positioning mechanism is symmetrical about the positioning block.

[0020] In one alternative embodiment, the positioning mechanism includes a screw threaded to the side wall of the cavity and a pressure plate at the end of the screw;

[0021] The pressure plate is symmetrical about the positioning block;

[0022] The pressure plate is parallel to the side of the positioning block.

[0023] The beneficial effects of this utility model are as follows: It provides a battery casing weld inspection device, which uses a positioning water tank and a ventilation mechanism in combination to replace manual visual inspection of battery casing welds, thereby achieving the effect of using air pressure instead of visual inspection during the battery casing inspection process and improving the accuracy of the inspection. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of a battery casing weld inspection device provided in an embodiment of this disclosure.

[0026] Figure 2 This is another overall structural schematic diagram of a battery casing weld inspection device provided in an embodiment of this disclosure.

[0027] Figure 3 This is a partial structural schematic diagram of a battery casing weld inspection device provided in an embodiment of the present disclosure.

[0028] Figure 4 This is a schematic diagram of the ventilation mechanism of a battery casing weld inspection device provided in an embodiment of the present disclosure.

[0029] In the diagram: 1. Positioning water tank; 11. Cavity; 12. Positioning block; 13. Clearance hole;

[0030] Positioning mechanism; 21. Pressure plate; 22. Screw;

[0031] Ventilation mechanism; 31. Insert; 32. Insertion end; 33. Air hole;

[0032] Connector. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0035] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0038] refer to Figures 1 to 4At least one embodiment provides a battery casing weld inspection device, comprising: a positioning water tank 1, which includes a cavity 11 for holding water and a positioning block 12 inside the cavity 11 suitable for preliminary positioning of the battery casing; the cavity 11 contains water that covers the positioning block 12, and the positioning block is inserted into the battery casing for preliminary positioning; and a ventilation mechanism 3, which includes an insert 31 suitable for insertion into the battery casing, for introducing high-pressure gas into the battery casing through the insert 31; when the bottom of the battery casing contacts the side of the positioning block 12, a sealed cavity is formed between the battery casing and the positioning block 12; when the ventilation mechanism 3 introduces high-pressure gas into the sealed cavity between the battery casing and the positioning block 12, if the weld of the battery casing is unqualified, it will leak gas; if it does not leak gas, it proves that the weld of the battery casing is qualified; both the positioning water tank 1 and the ventilation mechanism 3 are connected to an external control system for controlling their operation and shutdown, as well as for introducing high-pressure gas and water into them.

[0039] In some embodiments, the positioning block 12 is located below the water level inside the cavity 11 to ensure that the water level can submerge the battery casing being positioned; the ventilation mechanism 3 is located above the positioning block 12.

[0040] In some embodiments, the positioning block 12 is provided with a clearance hole 13 to avoid interference with the insert 31; the end of the insert 31 near the positioning block 12 is provided with an insertion end 32 for direct insertion into the cavity of the battery casing.

[0041] In some embodiments, the clearance hole 13 is located in the middle of the positioning block 12 and is used to correspond to the position of the insertion end 32; the insertion member 31 is provided with a vent 33 in the vertical direction to allow air to pass through the insertion member 31 and to allow air to pass into the battery casing cavity 11.

[0042] In some embodiments, the detection device further includes connectors 4 for connecting the positioning water tank 1 and the ventilation mechanism 3; one end of each connector 4 is connected to the end of the ventilation mechanism 3 and the other end is connected to the side wall of the positioning water tank 1, for connecting the positioning water tank 1 and the ventilation mechanism 3, and for facilitating the removal of the ventilation mechanism 3 from the positioning water tank 1.

[0043] In some embodiments, the detection device further includes a positioning mechanism 2 for further positioning the battery casing; the positioning mechanism 2 is symmetrical about the positioning block 12.

[0044] In some embodiments, the positioning mechanism 2 includes a screw 22 threadedly connected to the side wall of the cavity 11 and a pressure plate 21 at the end of the screw 22 for convenient control of the position of the pressure plate 21; the pressure plate 21 is symmetrical about the positioning block 12; the pressure plate 21 is parallel to the side of the positioning block 12 and is used to press the battery casing on the side of the positioning block 12.

[0045] Working principle: Before using a battery casing weld inspection device, the external control system introduces a certain amount of clean water into the cavity 11 of the positioning water tank 1, ensuring the water covers the positioning block 12 inside the cavity 11; simultaneously, the air vent 33 is connected to the external control system; then, the external transport mechanism transports the battery casing to be inspected into the cavity 11, during which the battery casing is fitted onto the positioning block 12; at this time, the positioning block 12 is inserted into the hollow part of the battery casing, with the side of the battery casing contacting the side of the positioning block 12, and the side of the battery casing opposite the hollow part facing the top of the positioning block 12; then, the operator operates the positioning mechanism 2 to press the pressure plate 12 against the side of the battery casing, and then the operator drives the ventilation mechanism 3 to move, causing the insert 31 to contact the top of the battery casing; further, the operator connects the ventilation mechanism through the connecting piece 4. 3. Fixed on the positioning water tank 1, during this process, under the drive of the connector 4, the insertion end 32 of the insert 31 is inserted into the battery casing, so that the air hole 33 of the insert 31 is connected to the sealed cavity formed by the positioning block 12 and the battery casing. Then, the external control system introduces a certain amount of high-pressure gas into the cavity between the battery casing and the positioning block 12 through the air hole 33. When the weld of the battery casing is qualified, the gas cannot break the weld and no bubbles will be generated in the water. When the weld of the battery casing is unqualified, the gas breaks the weld and bubbles are formed in the water. After the test is completed, the connector 4 is loosened. The operator separates the venting mechanism 3 from the battery casing. Finally, the external transport mechanism transports the tested battery casing to the required position and places a new battery casing to be tested on the positioning part 12. The above process is repeated until the work is completed.

[0046] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] While this patent document contains numerous details, it should not be construed as limiting any utility model or the scope of the claims, but rather as a description of features of a particular embodiment of a particular utility model. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various functions described in the context of a single embodiment may also be implemented individually in multiple embodiments, or in any suitable sub-combination. Furthermore, although the foregoing features may be described as functioning in certain combinations, or even initially claimed to be so, in some cases one or more features from a combination of claims may be removed from the combination, and a combination of claims may refer to a sub-combination or a variation of a sub-combination.

[0049] Similarly, although the operations are described in a specific order in the accompanying drawings, this should not be construed as requiring the specific order or sequence shown to perform such operations, or all the described operations, in order to obtain the desired result. Furthermore, the separation of various system components in the embodiments of this patent document should not be construed as requiring such separation in all embodiments.

[0050] Only some implementations and examples are described; other implementations, enhancements, and variations can be made based on the content described and illustrated in this patent document.

[0051] While several embodiments are provided in this disclosure, it should be understood that the disclosed systems and methods may be embodied in many other specific forms without departing from the spirit or scope of this disclosure. The present examples are intended to be illustrative rather than restrictive and are not limited to the details given. For example, various elements or components may be combined or integrated into another system, or certain features may be omitted or not implemented.

Claims

1. A battery case weld seam detection apparatus characterized by comprising: The application relates to a battery shell weld seam detection device. The device comprises a positioning water tank (1) and a ventilation mechanism (3). The positioning water tank (1) comprises a cavity (11) for containing water and a positioning block (12) in the cavity (11) for preliminarily positioning a battery shell. The ventilation mechanism (3) comprises an insertion piece (31) for being inserted into the battery shell, and is used for introducing high-pressure gas into the battery shell through the insertion piece (31). When the bottom of the battery shell contacts the side of the positioning block (12), a sealed cavity is formed between the battery shell and the positioning block (12). The ventilation mechanism (3) introduces high-pressure gas into the sealed cavity. The positioning block (12) is located below the liquid level of the water in the cavity (11). The ventilation mechanism (3) is located above the positioning block (12). The positioning block (12) is provided with a clearance hole (13) for avoiding interference with the insertion piece (31). The end of the insertion piece (31) close to the positioning block (12) is provided with an insertion end (32).

2. The battery shell weld seam detection device according to claim 1, wherein: The clearance hole (13) is located in the middle of the positioning block (12). The insertion piece (31) is provided with a gas hole (33) penetrating through the insertion piece (31) in the vertical direction, and is used for introducing gas into the cavity (11) of the battery shell.

3. The battery shell weld seam detection device according to claim 1, wherein: The detection device further comprises a connecting piece (4) for connecting the positioning water tank (1) and the ventilation mechanism (3). One end of the connecting piece (4) is connected with the end of the ventilation mechanism (3), and the other end is connected with the side wall of the positioning water tank (1).

4. The battery shell weld seam detection device according to claim 1, wherein: The detection device further comprises a positioning mechanism (2) for further positioning the battery shell. The positioning mechanism (2) is symmetrical about the positioning block (12).

5. The battery shell weld seam detection device according to claim 4, wherein: The positioning mechanism (2) comprises a screw rod (22) which is screw-connected with the side wall of the cavity (11) and a pressing plate (21) at the end of the screw rod (22). The pressing plate (21) is symmetrical about the positioning block (12). The pressing plate (21) is parallel to the side of the positioning block (12).

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