Battery solder joint appearance inspection machine

Abstract

The present invention discloses a battery solder joint appearance inspection machine, comprising: a frame; a transmission line arranged on the frame; a plurality of carriers placed on the transmission line for carrying battery modules to be inspected; a battery pack conveying mechanism, a battery cell tensile testing mechanism and a CCD inspection mechanism arranged on the frame in sequence and located on the same side of the transmission line or on opposite sides of the transmission line; and a first stopper and a second stopper arranged on the frame; wherein, when the carrier moves to the battery pack conveying mechanism, the first stopper keeps the carrier in a stationary state; when the carrier moves to the CCD inspection mechanism, the second stopper keeps the carrier in a stationary state. The battery solder joint appearance inspection machine realizes the automation of tensile testing of battery modules to be inspected in batches and welding quality inspection of solder joints, thereby improving inspection efficiency and inspection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of automated equipment used in battery production, and in particular to a battery welding point appearance inspection machine. Background Art

[0002] In the battery production process, the positive and negative electrode materials of the battery need to be welded to the battery cell. After the welding is completed, the welding point is subjected to a tensile test, and then the welding quality of the welding point is tested. In the prior art, the welding quality of the welding point is usually tested manually. When manually testing the welding quality of the welding point, naked eye observation is usually used. On the one hand, the detection efficiency is low, and it is difficult to realize batch automatic detection. On the other hand, the detection result is inaccurate.

[0003] In view of this, it is necessary to provide a detection device that can improve detection efficiency and detection accuracy, and can realize batch automated welding point welding quality detection. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a battery solder joint appearance inspection machine that can automatically perform batch tensile tests and solder joint quality inspection on battery cell modules to be inspected, thereby solving the problems of low inspection efficiency and low inspection accuracy in the prior art.

[0005] A battery solder joint appearance inspection machine disclosed in this article includes:

[0006] frame;

[0007] A transmission line mounted on a rack;

[0008] A plurality of carriers placed on the transmission line for carrying the battery cell modules to be tested;

[0009] A battery pack transport mechanism, a battery cell tensile testing mechanism and a CCD detection mechanism which are sequentially arranged on the rack and located on the same side of the transmission line or on opposite sides of the transmission line; and

[0010] A first stop member and a second stop member provided on the frame;

[0011] When the carrier moves to the battery pack transport mechanism, the first stopper keeps the carrier in a stationary state; when the carrier moves to the CCD detection mechanism, the second stopper keeps the carrier in a stationary state.

[0012] According to one embodiment of the present invention, the battery pack transport mechanism includes: a fixed base, a first Y-axis motion module, a Z-axis motion module and a clamp; the fixed base is fixed to the frame; the first Y-axis motion module is fixedly connected to the fixed base; the Z-axis motion module is connected to the first Y-axis motion module, and the clamp is connected to the bottom of the Z-axis motion module.

[0013] According to one embodiment of the present invention, a battery cell tensile testing mechanism includes: a base, a plurality of clamping members, a plurality of pulling members, a movable plate and a pushing member; the base is fixed to a frame, and a receiving position for placing a battery cell module to be tested is provided on the top of the base; a plurality of clamping members are fixed to the top of the base, and are arranged around the receiving position; a plurality of pulling members are fixed to the movable plate, and the plurality of pulling members respectively have a pulling end, and the pulling end is located at the bottom of the receiving position; the movable plate is slidably connected to the bottom of the base; the pushing member is provided on the base, and pushes the movable plate to slide along a transmission direction perpendicular to the transmission line.

[0014] According to one embodiment of the present invention, the CCD detection mechanism includes: a mounting seat, an X-axis motion module, a second Y-axis motion module and a CCD camera; the mounting seat is fixed to the frame, the X-axis motion module is arranged on the mounting seat, and the second Y-axis motion module is connected to the X-axis motion module; the CCD camera is connected to the second Y-axis motion module.

[0015] According to one embodiment of the present invention, the battery welding point appearance inspection machine also includes: a first lifting assembly and a second lifting assembly installed on the frame; the first lifting assembly is arranged on both sides of the transmission line and is located below the battery pack handling mechanism; the second lifting assembly is arranged on both sides of the transmission line and is located below the CCD inspection mechanism.

[0016] According to an embodiment of the present invention, the battery solder joint appearance inspection machine further includes: a barcode scanning mechanism; the barcode scanning mechanism is arranged on one side of the frame and is located downstream of the CCD inspection mechanism.

[0017] According to one embodiment of the present invention, the battery cell tension testing mechanism further includes: a safety light curtain for detecting whether the battery cell in the battery cell module to be tested is pulled down, and the safety light curtain is arranged on the base, located on one side of the accommodation position.

[0018] According to one embodiment of the present invention, there are five pulling members in total, and the five pulling members are arranged in a colinear manner at the bottom of the accommodating position, and the arrangement direction of the five pulling members is parallel to the transmission direction of the transmission line; each pulling member includes a pulling cylinder and a magnetic suction cup; the pulling rod of the pulling cylinder is connected to the magnetic suction cup.

[0019] According to an embodiment of the present invention, there are four clamping members, which are arranged around the accommodating position, and every two adjacent clamping members form an angle of 90 degrees with each other.

[0020] According to an embodiment of the present invention, both the first stopper and the second stopper are blocking cylinders.

[0021] The battery solder joint appearance inspection machine realizes the automation of tensile testing of battery cell modules to be inspected in batches and welding quality inspection of solder joints, which improves the inspection efficiency. The CCD inspection mechanism is adopted to improve the accuracy of welding quality inspection of solder joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 It is a three-dimensional structural diagram of a battery welding point appearance inspection machine in the embodiment;

[0024] Figure 2 It is a side view structural diagram of the battery welding point appearance inspection machine in the embodiment;

[0025] Figure 3 A three-dimensional structural diagram of a battery pack transport mechanism in an embodiment;

[0026] Figure 4 This is a front structural diagram of the battery pack transport mechanism in the embodiment;

[0027] Figure 5 A side structural diagram of a battery pack transport mechanism in an embodiment;

[0028] Figure 6 It is a three-dimensional structural diagram of the battery core tensile testing mechanism in the embodiment;

[0029] Figure 7 It is a side test structure diagram of the battery core tensile test mechanism in the embodiment;

[0030] Figure 8 It is a three-dimensional structural diagram of the CCD detection mechanism in the embodiment.

[0031] Description of reference numerals:

[0032] 1. Rack; 2. Transmission line; 3. Carrier; 4. Battery module to be tested; 5. Battery pack transport mechanism; 6. Battery tensile test mechanism; 7. CCD detection mechanism; 8. First lifting assembly; 9. Second lifting assembly; 10. Barcode scanning mechanism; 51. Fixed seat; 52. First Y-axis motion module; 53. Z-axis motion module; 54. Clamp; 61. Base; 62. First clamp; 63. Second clamp; 64. Third clamp; 65. Fourth clamp; 66. Pulling member; 67. Accommodation position ; 68. Safety light curtain; 69. Pushing member; 70. Moving plate; 661. First pulling cylinder; 662. Second pulling cylinder; 663. Third pulling cylinder; 664. Fourth pulling cylinder; 665. Fifth pulling cylinder; 661a. First magnet suction cup; 662a. Second magnet suction cup; 663a. Third magnet suction cup; 664a. Fourth magnet suction cup; 665a. Fifth magnet suction cup; 71. Mounting seat; 72. X-axis motion module; 73. Second Y-axis motion module; 74. CCD camera. DETAILED DESCRIPTION

[0033] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] It should be noted that, in the embodiment of the present invention, according to Figure 3 The XYZ rectangular coordinate system established in the figure is defined as follows: the side located in the positive direction of the X-axis is defined as the front (front side), and the side located in the negative direction of the X-axis is defined as the back (back side); the side located in the positive direction of the Y-axis is defined as the right side, and the side located in the negative direction of the Y-axis is defined as the left side; the side located in the positive direction of the Z-axis is defined as the top side, and the side located in the negative direction of the Y-axis is defined as the bottom side.

[0037] The present invention is a related design of a battery welding spot appearance inspection machine. In the first aspect, the battery welding spot appearance inspection machine of the present invention is very suitable for the appearance inspection of the positive or negative electrode welding spot of the battery cell, so as to sort the qualified and unqualified products or good products, qualified and unqualified products of the battery according to the inspection results; in the second aspect, the battery welding spot appearance inspection machine of the present invention is also suitable for other objects to be inspected for welding spots. When the battery welding spot appearance inspection machine of the present invention is used for the appearance inspection of the positive or negative electrode welding spot of the battery cell or other objects to be inspected for welding spots, the installation positions of the battery pack handling mechanism, the battery cell tensile testing mechanism and the CCD detection mechanism can be set according to the specific use scene and the inspection object, and the carrier shape and structure can also be set according to the specific inspection object. In addition, the embodiment of the battery welding spot appearance inspection machine provided by the present invention can be combined with an external battery positive or negative electrode cell welding device or an external battery qualified and unqualified or good products, qualified and unqualified product sorting machine to form a battery production line. In order to make the present invention easier to understand, the battery welding spot appearance inspection machine of the present invention and the benefits brought by it are further described in detail below with specific embodiments.

[0038] Please refer to Figure 1 and 2, respectively showing a three-dimensional structural diagram and a side structural diagram of a battery solder joint appearance inspection machine. The structure of the battery solder joint appearance inspection machine provided in this embodiment includes: a frame 1, a transmission line 2, a carrier 3, a battery pack transport mechanism 5, a battery cell tensile testing mechanism 6, a CCD detection mechanism 7, a first stopper and a second stopper. The transmission line 2 is arranged on the frame 1, and the transmission line 2 has a conveying line and a return line. The conveying line is used to transport the carrier 3 carrying the battery cell module to be inspected, and the return line is used to recover the empty carrier; there are multiple carriers 3, which are arranged on the transmission line 2 at equal intervals. Specifically, the carrier 3 is arranged on the conveying line, and the carrier 3 is used to carry the battery cell module 4 to be inspected, and each carrier 3 is placed on a battery cell module 4 to be inspected; the battery pack transport mechanism 5 is used to move the battery cell module 4 to be inspected placed on the carrier 3 to the battery cell tensile testing mechanism 6; the battery cell tensile testing mechanism 6 is used to perform a battery cell welding firmness test. After completing the tensile test, the battery pack transport mechanism 5 moves the battery cell module 4 to be inspected Move it back to the carrier 3; the CCD detection mechanism 7 is used to detect whether the welding points in the battery module 4 to be detected are loose after the tensile test; when the carrier 3 moves to the movement range of the battery pack transporting mechanism 5, the first stop member is used to control the carrier 3 to stop moving, so that the carrier 3 remains stationary, so that the battery pack transporting mechanism 5 can perform the transport action; when the carrier 3 carrying the battery module 4 to be detected that has completed the tensile test moves to the shooting range of the CCD detection mechanism 7, the second stop member is used to control the carrier 3 to stop moving, so that the carrier 3 remains stationary, so that the CCD detection mechanism 7 can gradually detect each welding point and take pictures. The transmission line 2 is arranged on the frame 1, and a plurality of carriers 3 are arranged on the transmission line 2 at equal intervals. The battery pack handling mechanism 5, the battery cell tensile testing mechanism 6 and the CCD detection mechanism 7 are arranged on the same side of the transmission line 2 according to the detection process, or the battery pack handling mechanism 5, the battery cell tensile testing mechanism 6 and the CCD detection mechanism 7 are arranged on opposite sides of the transmission line 2 according to the detection process. The first stopper matches the installation position of the battery pack handling mechanism 5. The first stopper can be arranged on the same side of the battery pack handling mechanism 5, located below the battery pack handling mechanism 5, or opposite to the battery pack handling mechanism 5. The second stopper matches the installation position of the CCD detection mechanism 7. The second stopper can be arranged on the same side of the CCD detection mechanism 7, located below the CCD detection mechanism 7, or opposite to the CCD detection mechanism 7. Specifically, the first stopper and the second stopper (not shown in the figure) are both blocking cylinders.

[0039] In another preferred embodiment, continue to refer to Figure 1 and 2The battery solder joint appearance inspection machine also includes: a barcode scanning mechanism 10, which is arranged on one side of the frame 1 and is located downstream of the CCD inspection mechanism 7. The barcode scanning mechanism 10 can be on the same side as the battery pack transport mechanism 5, the battery cell tensile testing mechanism 6 and the CCD inspection mechanism 7, or on a different side from the battery pack transport mechanism 5, the battery cell tensile testing mechanism 6 and the CCD inspection mechanism 7. The barcode scanning mechanism 10 is used to scan the barcode on the battery cell module 4 to be inspected, and save the inspection result of the CCD inspection mechanism 7 in the barcode on the corresponding battery cell module 4 to be inspected.

[0040] In one embodiment, review Figure 1 and Figure 2 , the battery solder joint appearance inspection machine also includes: a first lifting assembly 8 and a second lifting assembly 9. The first lifting assembly 8 is arranged on both sides of the transmission line 2 and is located below the battery pack handling mechanism 5; the second lifting assembly 9 is arranged on both sides of the transmission line 2 and is located below the CCD detection mechanism 7. The first lifting assembly 8 is used to lift the carrier 3 from the transmission line 2, so that the battery pack handling mechanism 5 can move the battery cell module 4 to be tested to the battery cell tensile testing mechanism 6, and the battery pack handling mechanism 5 can move the battery cell module 4 to be tested in the battery cell tensile testing mechanism 6 back to the carrier 3. Among them, the first lifting assembly 8 includes two lifting cylinders, which are arranged on both sides of the transmission line 2 and opposite to each other; the second lifting assembly 9 includes two lifting cylinders, which are arranged on both sides of the transmission line 2 and opposite to each other.

[0041] Furthermore, if Figure 3-5 As shown, they are a three-dimensional structural diagram, a front structural diagram and a side structural diagram of the battery pack transport mechanism 5. The battery pack transport mechanism 5 includes: a fixed seat 51, a first Y-axis motion module 52, a Z-axis motion module 53 and a clamp 54. There are two fixed seats 51, and the bottom of the fixed seat 51 is fixed to the frame 1 respectively; the first Y-axis motion module 52 is fixedly connected to the top of the fixed seat 51; the Z-axis motion module 53 is connected to the first Y-axis motion module 52, and the Z-axis motion module 53 moves left and right with the left and right movement of the first Y-axis motion module 52; the clamp 54 is connected to the bottom of the Z-axis motion module 53, and the clamp 54 moves up and down with the up and down movement of the Z-axis motion module 53. Among them, the first Y-axis motion module 52 and the Z-axis motion module 53 are servo modules respectively.

[0042] In another embodiment, if Figure 6-7, which are respectively a three-dimensional structural diagram and a side structural diagram of the battery cell tensile testing mechanism 6 . The battery cell tension test mechanism 6 includes: a base 61, a plurality of clamping members, a plurality of pulling members 66, a movable plate 70 and a pushing member 69; the base 61 is fixed to the frame 1, and a receiving position 67 for placing the battery cell module 4 to be tested is provided on the top of the base 61, and the receiving position 67 is a hollow design, and the shape and size of the receiving position 67 can be set according to the shape of the battery cell module 4 to be tested; a plurality of clamping members are fixed to the top of the base 61, and are arranged around the receiving position 67. When the battery cell module 4 to be tested is placed in the receiving position 67, the plurality of clamping members can act simultaneously to clamp the battery cell module 4 to be tested; a plurality of pulling members 66 are respectively fixed to the movable plate 70, and the plurality of pulling members 66 respectively have a pulling end, and the pulling end is located at the bottom of the receiving position 67; the movable plate 70 is slidably connected to the bottom of the base 61; the pushing member 69 is arranged on one side of the base 61, and pushes the movable plate 70 to slide along the transmission direction perpendicular to the transmission line 2. Specifically, as Figure 6 As shown, the base 61 includes an upper base plate and a lower base plate, and four pillars connecting the upper base plate and the lower base plate, wherein a cross bar is further arranged between two adjacent pillars, and the top projection surfaces of the upper base plate and the lower base plate are both square, and a receiving position 67 is arranged at the center of the upper base plate. In this embodiment, the cross section of the receiving position 67 is a square, and a plurality of clamping members are fixed to the upper base plate and arranged around the receiving position 67, and the movable plate 70 is slidably connected to the lower base plate, such as the movable plate 70 can be connected to the lower base plate through a slide rail, and a pushing member 69 is fixedly arranged on the lower base plate, and a pushing rod of the pushing member 69 is connected to the movable plate 70, and pushes the movable plate 70 to slide along the slide rail, and there are two slide rails, both of which are arranged perpendicular to the transmission direction of the transmission line 2, and the sliding distance is arranged according to the structure of the battery module 4 to be detected; a plurality of pulling members 66 are arranged on the movable plate 70, and are located below the receiving position 67. Specifically, as Figure 7As shown, there are five pulling members 66, which are arranged in a colinear manner at the bottom of the accommodating position 67, and the arrangement direction of the five pulling members 66 is parallel to the transmission direction of the transmission line 2; it should be noted that the two slide rails can also be set along the transmission direction parallel to the transmission line 2, and the arrangement direction of the five pulling members 66 is perpendicular to the transmission direction of the transmission line 2, so that the pushing member pushes the pulling member 66 to move along the direction parallel to the transmission line 2; each pulling member 66 includes a pulling cylinder and a magnetic suction cup; the pulling rod of the pulling cylinder is connected to the magnetic suction cup; the pulling cylinders are respectively a first pulling cylinder 661, a second pulling cylinder 662, a third pulling cylinder 663, The fourth pulling cylinder 664 and the fifth pulling cylinder 665, the magnetic suction cups are respectively the first magnet suction cup 661a, the second magnet suction cup 662a, the third magnet suction cup 663a, the fourth magnet suction cup 664a and the fifth magnet suction cup 665a, the pulling rod of the first pulling cylinder 661 is connected to the first magnet suction cup 661a, the pulling rod of the second pulling cylinder 662 is connected to the second magnet suction cup 662a, the pulling rod of the third pulling cylinder 663 is connected to the third magnet suction cup 663a, the pulling rod of the fourth pulling cylinder 664 is connected to the fourth magnet suction cup 664a, and the pulling rod of the fifth pulling cylinder 665 is connected to the fifth magnet suction cup 665a; Figure 6 As shown, there are four clamping members, namely a first clamping member 62, a second clamping member 63, a third clamping member 64 and a fourth clamping member 65. The four clamping members are arranged around the accommodating position 67, and every two adjacent clamping members form a 90-degree angle with each other.

[0043] Furthermore, the cell tension test mechanism 6 also includes: a safety light curtain 68 for detecting whether the cell in the cell module 4 to be tested is pulled down, and the safety light curtain 68 is arranged on the base 61, located on one side of the accommodation position 67, such as Figure 6 As shown, the safety light curtain 68 is arranged on the inner side of the cross bar, on one side of the accommodation position 67.

[0044] See also Figure 8 , which is a three-dimensional structural diagram of the CCD detection mechanism 7. The CCD detection mechanism 7 includes: a mounting seat 71, an X-axis motion module 72, a second Y-axis motion module 73 and a CCD camera 74; there are two mounting seats 71, the bottoms of the mounting seats 71 are respectively fixed to the frame 1, the X-axis motion module 72 is arranged on the top of the mounting seat 71, and the second Y-axis motion module 73 is connected to the X-axis motion module 72; the CCD camera 74 is connected to the second Y-axis motion module 73. The X-axis motion module 72 moves left and right as the second Y-axis motion module 73 moves left and right, and the CCD camera 74 moves forward and backward as the X-axis motion module 72 moves forward and backward.

[0045] The operating principle of the battery solder joint appearance inspection machine is as follows: the battery cell modules 4 to be inspected are placed in a row on each carrier 3. They can be placed manually or by external automated mechanical equipment. The transmission line 2 transports the carrier 3 to the battery pack handling mechanism 5. The first stopper is activated to prevent the carrier 3 from continuing to move forward. The carrier 3 is in a stationary state. The first lifting component 8 lifts the carrier 3, and the battery pack handling mechanism 5 is activated. The first Y-axis motion module 52 moves, driving the Z-axis motion module 53 and the clamping claw 54 connected to the bottom of the Z-axis motion module 53 to move left or right along the first Y-axis motion module 52 to a predetermined position. The Z-axis motion module 53 drives the clamping claw 54 to move up and down to a predetermined position. The clamping claw 54 opens to clamp the battery cell modules to be inspected. The battery module 4 is tested. The clamping claw 54 moves the battery module 4 to be tested to the accommodation position 67 on the top of the base 61 of the battery tension test mechanism 6 under the movement of the first Y-axis motion module 52 and the Z-axis motion module 53. The first lifting assembly 8 maintains the lifting state, and multiple clamping members extend at the same time to clamp the battery module 4 to be tested. Multiple pulling members 66 extend at the same time and reset in sequence according to the set order. During the reset process, the battery module 4 to be tested is pulled down to check whether the battery is pulled down. When the battery is pulled down and falls onto the pulling member 66, the safety light curtain 68 sends an alarm signal. Subsequently, the push rod pushes the moving plate 70 to move perpendicular to the transmission direction of the transmission line 2, driving multiple pulling members 66 to move simultaneously, and the moving distance is 20. 5mm, multiple pulling members 66 repeat the above pulling action; after completing the pulling test, the clamping claw 54 of the battery pack transporting mechanism 5 clamps the battery cell module 4 to be tested, and multiple clamping members and multiple pulling members 66 are reset. The battery pack transporting mechanism 5 moves the battery cell module 4 to be tested out of the accommodating position 67 and replaces it in the carrier 3. The first stop member and the first lifting assembly 8 are reset, and the battery pack transporting mechanism 5 performs the transport action of the next carrier 3. The carrier 3 flows downward, and the carrier 3 moves to the CCD detection mechanism 7. The second stop member is activated to prevent the carrier 3 from continuing to move forward. The carrier 3 is in a stationary state. The second lifting assembly 9 lifts the carrier 3, and the barcode scanning mechanism 10 scans the barcode on the battery cell module 4 to be tested. The CCD detection mechanism 7 Start, the second Y-axis motion module 73 moves, driving the X-axis motion module 72 and the CCD camera 74 connected to the X-axis motion module 72 to move left or right along the second Y-axis motion module 73 to a predetermined position, the X-axis motion module 72 drives the CCD camera 74 to move back and forth to a predetermined position, the CCD camera 74 checks the status of the positive or negative welding points of the battery cells one by one, and saves the detection results in the barcode on the battery cell module 4 to be detected, so as to perform subsequent sorting according to the detection results, the second Y-axis motion module 73 and the X-axis motion module 72 are reset to detect the welding point status of the battery cell module 4 to be detected in the next carrier 3, the second stopper and the second lifting assembly 9 are reset, and the carrier 3 flows downward with the conveyor belt.

[0046] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A battery solder joint appearance inspection machine, characterized in that: include: frame; a transmission line disposed on the rack; A plurality of carriers placed on the transmission line for carrying the battery cell modules to be tested; A battery pack transport mechanism, a battery cell tension testing mechanism and a CCD detection mechanism which are sequentially arranged on the rack and located on the same side of the transmission line or on opposite sides of the transmission line; a first stop member and a second stop member disposed on the frame; and A barcode scanning mechanism; the barcode scanning mechanism is arranged on one side of the frame and is located downstream of the CCD detection mechanism; Wherein, when the carrier moves to the battery pack transport mechanism, the first stopper keeps the carrier in a stationary state; when the carrier moves to the CCD detection mechanism, the second stopper keeps the carrier in a stationary state; The battery pack transport mechanism comprises: a fixing seat, a first Y-axis motion module, a Z-axis motion module and a clamp; the fixing seat is fixed on the frame; the first Y-axis motion module is fixedly connected to the fixing seat; the Z-axis motion module is connected to the first Y-axis motion module, and the clamp is connected to the bottom of the Z-axis motion module; The battery cell tension test mechanism includes: a base, multiple clamping members, multiple pulling members, a movable plate, a pushing member and a safety light curtain for detecting whether the battery cells in the battery cell module to be tested are pulled down; the base is fixed to the frame, and a storage position for placing the battery cell module to be tested is provided on the top of the base; the storage position is a hollow design; the multiple clamping members are fixed to the top of the base and are arranged around the storage position; the multiple pulling members are fixed to the movable plate, and the multiple pulling members respectively have a pulling end, and the pulling end is located at the bottom of the storage position; the movable plate is slidably connected to the bottom of the base; the pushing member is arranged on the base, and pushes the movable plate to slide along the transmission direction perpendicular to the transmission line; the safety light curtain is arranged on the base, and is located on one side of the storage position.

2. The battery solder joint appearance inspection machine according to claim 1, characterized in that: The CCD detection mechanism includes: a mounting seat, an X-axis motion module, a second Y-axis motion module and a CCD camera; the mounting seat is fixed to the frame, the X-axis motion module is arranged on the mounting seat, the second Y-axis motion module is connected to the X-axis motion module; the CCD camera is connected to the second Y-axis motion module.

3. The battery solder joint appearance inspection machine according to claim 1, characterized in that: It also includes a first lifting assembly and a second lifting assembly installed on the frame; the first lifting assembly is arranged on both sides of the transmission line and is located below the battery pack handling mechanism; the second lifting assembly is arranged on both sides of the transmission line and is located below the CCD detection mechanism.

4. The battery solder joint appearance inspection machine according to claim 1, characterized in that: There are five pulling members in total, and the five pulling members are arranged in a colinear manner at the bottom of the accommodating position, and the arrangement direction of the five pulling members is parallel to the transmission direction of the transmission line; each of the pulling members includes a pulling cylinder and a magnetic suction cup; the pulling rod of the pulling cylinder is connected to the magnetic suction cup.

5. The battery solder joint appearance inspection machine according to claim 1, characterized in that: There are four clamping members, which are arranged around the accommodating position, and every two adjacent clamping members form an angle of 90 degrees with each other.

6. The battery solder joint appearance inspection machine according to any one of claims 1-2, characterized in that: The first stop member and the second stop member are both blocking cylinders.

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