Battery module welding state inspection device

Abstract

The utility model discloses a battery module welding state inspection device which comprises an inspection table and a battery module body, a conveying device matched with the battery module body is arranged in the middle of the inspection table, a lifting plate is arranged on the inspection table through a lifting assembly, and an adjusting plate is arranged in the lifting plate through a moving mechanism. An inspection mechanism is arranged below the adjusting plate through a mounting assembly, and a photographing detection assembly is further arranged on the detection table. According to the utility model, strength inspection can be conveniently carried out on a welding part, a battery module main body which is not firmly welded or pseudo-welded can be inspected, and a worker can conveniently mark and remove the battery module main body so as to carry out operations such as secondary welding, so that subsequent processing and use are not influenced; and meanwhile, a plurality of welding positions of the battery module main body can be conveniently checked through cooperation of the lifting assembly and the moving mechanism, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a battery module welding state inspection device. Background Art

[0002] In recent years, new energy vehicles have developed by leaps and bounds, and people have higher and higher expectations for the range of electric vehicles. A key factor affecting the range is the energy density of the power battery. Soft-pack batteries are widely used in the market because of their advantages such as light weight, high specific capacity, good safety performance, low internal resistance, and flexible design. When multiple soft-pack batteries are assembled into a battery module, the positive and negative ears of the battery cells need to be welded in series. After welding, the welding status needs to be checked to avoid cold welding and other situations.

[0003] When inspecting the welding status, most of the existing methods are to take photos and then cooperate with workers to inspect, but it is easy to have cold welding or loose welding, and it is impossible to accurately inspect and select, which affects the subsequent processing and use of the battery. Utility Model Content

[0004] The purpose of the utility model is to provide a battery module welding status inspection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery module welding status inspection device, including a testing platform and a battery module body, a conveying device matching the battery module body is provided in the middle of the testing platform, a lifting plate is provided on the testing platform through a lifting assembly, an adjustment plate is provided inside the lifting plate through a moving mechanism, an inspection mechanism is provided under the adjustment plate through an installation assembly, and a photo detection assembly is also provided on the testing platform.

[0006] Preferably, in order to conveniently adjust the distance between the inspection mechanism and the battery module body and to facilitate the inspection of the welding strength, the lifting assembly includes a fixed block symmetrically arranged on the inspection table, and hydraulic telescopic rods are equidistantly arranged on the fixed block, and the top of the hydraulic telescopic rod is fixedly connected to the lifting plate.

[0007] Preferably, in order to facilitate the inspection of different welding points on the battery module body, the moving mechanism includes an empty slot opened in the middle of the lifting plate, a screw is provided in the empty slot, the screw is engaged with the adjustment plate through a thread, and one end of the screw passes through the empty slot and is connected to the output end of the motor.

[0008] Preferably, in order to ensure stable movement, the moving mechanism further comprises guide plates symmetrically arranged on both side walls of the adjusting plate, and the inner wall of the hollow groove is provided with guide grooves matching the guide plates.

[0009] Preferably, in order to facilitate the assembly of the inspection mechanism, the mounting assembly includes support columns equidistantly arranged under the adjustment plate, and a mounting plate is fixedly provided at the bottom end of the support column.

[0010] Preferably, in order to facilitate the inspection of the strength of the welding point and avoid the existence of loose welding or cold welding, the inspection mechanism includes a tension sensor arranged in the middle of the mounting plate, the tension sensor is provided with a pull plate through a pull hook, and the pull plate is provided with an anti-slip pad.

[0011] Preferably, in order to be able to photographically inspect the welding position again to improve accuracy, the photographic detection component includes a mounting frame arranged on the detection table, a CCD camera is provided at the bottom middle end of the mounting frame, and fill lights are symmetrically provided on both sides of the mounting frame, and the fill lights are connected to the mounting frame through a connecting rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The inspection mechanism can be used to check the strength of the welding points, and the battery module body with weak welding or poor welding can be inspected, which is convenient for the staff to mark and remove, and then perform secondary welding and other operations without affecting subsequent processing and use. At the same time, the lifting assembly and the moving mechanism can be used to check multiple welding points of the battery module body, which is more convenient to use;

[0014] (2) The camera inspection component can be used to inspect the weld after checking the weld strength, to avoid defects in the product. At the same time, it can also provide fill light when the light is poor to ensure the clarity of the camera inspection and improve the accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a battery module welding status inspection device proposed by the utility model;

[0016] Figure 2 This is a structural schematic diagram of a photographic detection component in a battery module welding status inspection device proposed by the utility model;

[0017] Figure 3 This is a partial structural schematic diagram of a battery module welding status inspection device proposed by the utility model;

[0018] Figure 4 It is a partial structural schematic diagram of a moving mechanism and an inspection mechanism in a battery module welding status inspection device proposed by the utility model;

[0019] Figure 5 The utility model provides a structural schematic diagram of the installation components and the inspection mechanism in the battery module welding status inspection device.

[0020] In the figure: 1. Testing table; 2. Battery module body; 3. Conveying device; 4. Fixing block; 5. Hydraulic telescopic rod; 6. Lifting plate; 7. Mounting frame; 8. Fill light; 9. Connecting rod; 10. CCD camera; 11. Empty slot; 12. Motor; 13. Guide slot; 14. Adjusting plate; 15. Screw; 16. Guide plate; 17. Mounting plate; 18. Support column; 19. Tension sensor; 20. Hook; 21. Pull plate; 22. Anti-slip pad. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 5 The utility model provides an embodiment: a battery module welding status inspection device, including a detection platform 1 that can conveniently inspect the welding points of the battery module body 2, which can avoid cold welding, loose welding, etc., and can inspect the welding status of the tabs in the battery module body 2, and can also inspect other welding points. The inspection is based on the actual situation. It is a relatively mature technology and will not be described in detail here. The middle part of the detection platform 1 is equipped with a conveying device 3 (which can be a conveyor belt or a conveyor roller, etc., which is a relatively mature technology and will not be described in detail here) for conveniently inspecting the welded battery module body 2.

[0023] See also Figure 1-Figure 5 In order to check the firmness of welding, etc., the test platform 1 is located on both sides of the conveying device 3 and welded with fixed blocks 4 of the lifting assembly, and a hydraulic telescopic rod 5 is installed on the fixed block 4, and a lifting plate 6 is installed at the top (i.e., the extended end) of the hydraulic telescopic rod 5. In order to facilitate the flexible adjustment of the inspection mechanism and facilitate the inspection operation of different pole ears, an empty slot 11 of the moving mechanism is opened on the lifting plate 6, and a screw 15 is arranged in the empty slot 11, and one end of the screw 15 passes through the empty slot 11 and is fixedly connected to the output end of the motor 12 through a coupling, and an adjustment plate 14 is meshed with the screw 15 through a thread in the empty slot 11. In order to facilitate movement in the empty slot 11, rectangular guide plates 16 are welded on both sides of the adjustment plate 14, and a guide slot 13 for facilitating the horizontal sliding of the guide plate 16 is opened on the inner side wall of the empty slot 11;

[0024] Support columns 18 (four groups) of the mounting components are vertically welded around the bottom of the adjustment plate 14, and a mounting plate 17 is welded to the bottom of the support columns 18. The mounting plate 17 is embedded with a tension sensor 19 (a relatively mature technology that will not be elaborated here. It can be conveniently adjusted according to the strength of the weld to check the size of the tension, so as to avoid damage to the weld due to excessive tension and affect the accuracy of the inspection due to insufficient tension). A pull plate 21 is installed at the bottom of the tension sensor 19 through a pull hook 20, which can be easily inserted into the gap after the pole ear is welded, so as to pull upward to check the welding effect. In order to avoid hard contact, a non-slip pad 22 is pasted on the pull plate 21.

[0025] See also Figure 1-Figure 5 In order to take photos and detect the surface of the welding place, avoid unevenness such as welding protrusions, and ensure the quality and effect of welding, a U-shaped mounting frame 7 of a photographing detection component is also installed on the inspection table 1 by bolts, and a CCD camera 10 is installed at the bottom of the middle part of the mounting frame 7, which can be convenient for taking photos of the welding place. At the same time, the photos taken are transmitted to the display for display through a transmission device (which can be transmitted through a wireless network, Bluetooth or a data cable, etc., which is a relatively mature technology and will not be described here), which is convenient for staff to observe and screen, and convenient for marking and screening the battery module body 2 with defects in welding, which is convenient for reprocessing and does not affect subsequent use. In order to further improve the clarity of the photos, fill light can be used when the light is not good, and fill light lamps 8 are installed at both ends of the mounting frame 7 through connecting rods 9.

[0026] Working principle: When the utility model is in use, the battery module body 2 to be inspected is transported through the conveying device 3. When it moves to the bottom of the lifting plate 6, the conveying is stopped, and the hydraulic telescopic rod 5 is contracted to move the lifting plate 6 downward. At the same time, the motor 12 works together to move the adjustment plate 14 on the screw 15, wherein the guide plate 16 slides in the guide groove 13 to ensure the stability of the movement. The position of the pull plate 21 can be adjusted, so as to facilitate the positioning with the pole ear on the battery module body 2 and facilitate insertion. The tensile strength is determined according to the strength of the welding in cooperation with the tension sensor 19, and then the hydraulic telescopic rod 5 is extended to move the lifting plate 6 upward as a whole, and then the pull plate 21 and the anti-slip pad 22 can be used. In conjunction with the tension sensor 19, the strength of the welding point can be checked to avoid loose welding or cold welding, thereby ensuring the quality of the product and not affecting subsequent processing and use. After the inspection is completed, the hydraulic telescopic rod 5 is first retracted and reset, and then the motor 12 is used to move in the opposite direction of the inserted welding point to remove the pull plate 21, and then the hydraulic telescopic rod 5 is extended to move the lifting plate 6 upward, which does not affect the conveying device 3 to convey the inspected battery module body 2, and is also convenient for the next inspection. Then, the CCD camera 10 is used to take pictures again to ensure the quality of the welding and avoid defects. When the light is not good, the fill light 8 can be used to fill in the light and take pictures to ensure clarity.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A battery module welding status inspection device, comprising a detection platform (1) and a battery module body (2), characterized in that: A conveying device (3) matching the battery module body (2) is provided in the middle of the detection platform (1); a lifting plate (6) is provided on the detection platform (1) via a lifting assembly; an adjusting plate (14) is provided inside the lifting plate (6) via a moving mechanism; an inspection mechanism is provided under the adjusting plate (14) via a mounting assembly; and a photographing detection assembly is also provided on the detection platform (1).

2. A battery module welding status inspection device according to claim 1, characterized in that: The lifting assembly comprises a fixed block (4) symmetrically arranged on the detection platform (1), hydraulic telescopic rods (5) are equidistantly arranged on the fixed block (4), and the top end of the hydraulic telescopic rod (5) is fixedly connected to the lifting plate (6).

3. A battery module welding status inspection device according to claim 2, characterized in that: The moving mechanism comprises a slot (11) provided in the middle of the lifting plate (6), a screw rod (15) being arranged in the slot (11), the screw rod (15) being meshed with the adjusting plate (14) through a thread, and one end of the screw rod (15) passing through the slot (11) and being connected to an output end of a motor (12).

4. A battery module welding status inspection device according to claim 3, characterized in that: The moving mechanism further comprises guide plates (16) symmetrically arranged on the two side walls of the adjustment plate (14), and the inner wall of the empty slot (11) is provided with guide slots (13) matching the guide plates (16).

5. A battery module welding status inspection device according to claim 4, characterized in that: The mounting assembly comprises support columns (18) equidistantly arranged below the adjustment plate (14), and a mounting plate (17) is fixedly disposed at the bottom end of the support column (18).

6. A battery module welding status inspection device according to claim 5, characterized in that: The inspection mechanism comprises a tension sensor (19) arranged in the middle of a mounting plate (17); the tension sensor (19) is provided with a pull plate (21) via a pull hook (20); and an anti-slip pad (22) is provided on the pull plate (21).

7. A battery module welding status inspection device according to claim 6, characterized in that: The photographic detection component comprises a mounting frame (7) arranged on a detection platform (1), a CCD camera (10) being arranged at the bottom of the middle part of the mounting frame (7), and fill-in lights (8) being symmetrically arranged on both sides of the mounting frame (7), and the fill-in lights (8) being connected to the mounting frame (7) via a connecting rod (9).

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