Welding ribbon detection mechanism and photovoltaic module string welding machine

Abstract

The present application relates to a welding strip detection mechanism and a photovoltaic module string welding machine, including a mounting member, an elastic member, a fastener and a sensor, wherein the elastic member is connected to the mounting member, the fastener is connected to the mounting member, the fastener is used to be movably connected to the welding strip pulled out by the welding strip material roll, and when the welding strip material roll releases the welding strip, the fastener and the elastic member jointly hold the mounting member against the welding strip material roll under the tension of the welding strip, and the sensor is arranged on the mounting member, and the sensor is used to sense the welding strip. In the welding strip detection mechanism and photovoltaic module string welding machine of the present application, during the welding strip release process, the fastener can follow the release position of the welding strip to realize the positioning of the release position of the welding strip, so that the sensor moves with the mounting member to the position corresponding to the release position of the welding strip for sensing, thereby improving the accuracy of detecting the residual amount of the welding strip.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a welding strip detection mechanism and a photovoltaic module string welding machine. Background Art

[0002] Photovoltaic modules, or solar cell modules, are formed by connecting a certain number of cells in series through welding ribbons. In the related art, a photovoltaic module stringer that realizes the string welding of cells usually detects whether the welding ribbon roll has been used up by setting a sensor at a fixed position.

[0003] However, the fixed position sensor can only sense a specific area, so there will be a blind spot in the detection. As the solder ribbon is used, the diameter of the solder ribbon roll will gradually decrease. This will cause the remaining solder ribbon to be unable to be sensed by the sensor when the solder ribbon roll is about to be released because it is outside the sensing area of ​​the sensor. At this time, the sensor will identify the unused solder ribbon roll as the used solder ribbon roll, resulting in inaccurate solder ribbon detection results. Summary of the invention

[0004] Based on this, a welding strip detection mechanism and a photovoltaic module string welding machine are provided to solve the problem of how to improve the accuracy of detecting the remaining amount of the welding strip.

[0005] On the one hand, the present application provides a solder strip detection mechanism, which is used to detect the remaining amount of solder strip wound up by the solder strip material roll, and the solder strip detection mechanism includes:

[0006] Mounting parts;

[0007] an elastic member connected to the mounting member;

[0008] A fastener, the fastener is connected to the mounting member, the fastener is used to be movably connected to the solder strip pulled out by the solder strip roll, and when the solder strip roll releases the solder strip, the fastener and the elastic member jointly keep the mounting member against the solder strip roll under the tension of the solder strip;

[0009] A sensor is arranged on the mounting member, and is used for sensing the welding strip.

[0010] In one embodiment, the mounting member is made of Teflon, and / or the mounting member is in plate shape, and the mounting member is in surface contact or line contact with the solder strip roll.

[0011] In one of the embodiments, the mounting member is provided with a strip groove, and the welding strip detection mechanism further includes a connecting member, the connecting member is passed through the strip groove, and the sensor is connected to the mounting member through the connecting member.

[0012] In one embodiment, the mounting member is provided with a first avoidance groove and a second avoidance groove which are connected to the strip groove, and the connecting member includes a bolt and a nut, the bolt having a bolt head and a bolt rod which are connected, the bolt head is accommodated in the first avoidance groove, the nut is accommodated in the second avoidance groove, and the bolt rod is threadably matched with the nut.

[0013] In one embodiment, the elastic member includes a spring, an elastic rope or an elastic rod.

[0014] In one embodiment, the fastener has a through hole, and the through hole is used to pass the welding strip;

[0015] Alternatively, the fastener includes a hook, and the hook is used to be hung on the welding strip.

[0016] In one embodiment, the fastener is made of ceramic, Teflon or polymer material.

[0017] In one of the embodiments, the welding ribbon detection mechanism includes a support rod, one end of the support rod is connected to the fastener, and the other end of the support rod is connected to the mounting member.

[0018] In one of the embodiments, the support rod can be elastically deformed relative to the mounting member under the action of an external force.

[0019] On the other hand, the present application provides a photovoltaic module string welding machine, including a solder tape winding mechanism, a welding mechanism, a controller, an alarm and a solder tape detection mechanism as described above, wherein the solder tape winding mechanism is used to load a solder tape roll and supply the solder tape to the welding mechanism, and the sensor of the solder tape detection mechanism is connected to the controller signal. When the sensor senses that the solder tape roll loaded by the solder tape winding mechanism is used up, the controller controls the solder tape winding mechanism to stop supplying the solder tape to the welding mechanism, and controls the alarm to sound an alarm.

[0020] The above-mentioned welding tape detection mechanism and photovoltaic module string welding machine, the sensor is arranged on the mounting part, and the mounting part is always kept against the welding tape roll by using elastic parts and fasteners. Since the fasteners are movably connected to the welding tape, during the welding tape release process, the fasteners can follow the release position of the welding tape to realize the positioning of the release position of the welding tape, so that the sensor moves with the mounting part to the position corresponding to the release position of the welding tape for sensing, thereby improving the accuracy of detecting the residual amount of the welding tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the top structure of a welding ribbon detection mechanism and a welding ribbon winding mechanism in a photovoltaic module welding machine according to one embodiment of the present application.

[0023] Figure 2 for Figure 1 The schematic diagram of the cross-sectional structure of the welding ribbon detection mechanism and welding ribbon winding mechanism of the photovoltaic module welding machine at II is shown.

[0024] Figure 3 for Figure 2 The cross-sectional structure schematic diagram of the welding ribbon coil release process in the welding ribbon winding mechanism of the photovoltaic module welding machine is shown.

[0025] Figure 4 for Figure 2 The schematic diagram of the cross-sectional structure is shown when the soldering ribbon of the soldering ribbon roll in the soldering ribbon winding mechanism of the photovoltaic module welding machine is completely released.

[0026] Figure 5 It is a structural schematic diagram of another soldering tape winding mechanism applicable to the soldering tape detection mechanism of one embodiment of the present application.

[0027] Figure 6 The structure diagram of another soldering tape winding mechanism applicable to the soldering tape detection mechanism of one embodiment of the present application is shown.

[0028] Figure 7 This is a structural schematic diagram of a welding ribbon detection mechanism of a photovoltaic module welding machine according to another embodiment of the present application.

[0029] Figure 8 for Figure 7 The cross-sectional structure diagram of the welding strip detection mechanism of the photovoltaic module welding machine at II-II is shown.

[0030] Description of reference numerals:

[0031] 10. Welding ribbon detection mechanism; 101. Welding ribbon material coil; 102. Welding ribbon; 11. Mounting member; 111. Strip groove; 112. First air-avoiding groove; 113. Second air-avoiding groove; 12. Elastic member; 121. Spring; 13. Fastener; 131. Perforation; 14. Support rod; 20. Welding ribbon winding mechanism; 21. Coil roller; 22. Guide wheel; 30. Frame; 31. Fixing rod. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0034] The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for illustrative purposes only and do not represent the only implementations.

[0035] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] See also Figure 1 and Figure 2 As shown, the solder strip detection mechanism 10 provided in one embodiment of the present application can be used to detect the remaining amount of the solder strip 102 wound up by the solder strip material roll 101, so as to confirm whether the solder strip material roll 101 has been used up. The solder strip detection mechanism 10 includes a mounting member 11, an elastic member 12, a fastener 13 and a sensor (not shown in the figure). The elastic member 12 is connected to the mounting member 11, and the fastener 13 is connected to the mounting member 11. The connection method can be welding, snap connection or screw connection, which is not limited here.

[0038] When the solder strip material roll 101 releases the solder strip 102, the fastener 13 and the elastic member 12 jointly hold the mounting member 11 against the solder strip material roll 101 under the tension of the solder strip 102. It should be noted that in this embodiment, the fastener 13 and the elastic member 12 exert force on the mounting member 11 to keep the mounting member 11 against the solder strip material roll 101. Therefore, when the solder strip material roll 101 releases the solder strip 102, the diameter of the solder strip material roll 101 gradually decreases, and the mounting member 11 moves as the diameter of the solder strip material roll 101 decreases to keep against the solder strip material roll 101. The sensor is used to sense the solder strip 102 to determine whether the solder strip 102 has been used up. There is no limitation on the type of the sensor, as long as it can generate different sensing signals when the solder strip 102 is sensed and when the solder strip 102 is not sensed, so as to meet the need to detect the use of the solder strip 102. The sensor is disposed on the mounting member 11 , so that when the mounting member 11 moves, the sensor is driven to move together.

[0039] In the solder strip detection mechanism 10 of the present application, the fastener 13 is used to be movably connected to the solder strip 102 pulled out by the solder strip material roll 101. For example, when the solder strip detection mechanism 10 is used to detect the remaining amount of the solder strip 102 rolled up by the solder strip material roll 101, the fastener 13 can be movably connected to the solder strip 102. Since the fastener 13 can move along the solder strip 102, it will not hinder the solder strip material roll 101 from releasing the solder strip 102. Accordingly, in the process of the solder strip material roll 101 releasing the solder strip 102, when the release position of the solder strip 102 (i.e., the position corresponding to when the solder strip 102 is released from the solder strip material roll 101) changes, the fastener 13 located on the solder strip 102 will also move with the solder strip 102 to locate the release position of the solder strip 102.

[0040] Since in the solder strip detection mechanism 10 of the embodiment of the present application, the mounting member 11 is always against the solder strip roll 101 under the action of the elastic member 12 and the fastener 13, so that during the release of the solder strip 102, the fastener 13 follows the movement of the solder strip 102 to drive the mounting member 11 to move relative to the solder strip roll 101, so that the mounting member 11 is against different positions of the solder strip roll 101. Specifically, when the solder strip 102 is released from the solder strip roll 101, since the fastener 13 follows the movement of the solder strip 102, the position where the mounting member 11 is against the solder strip roll 101 corresponds to the position where the solder strip roll 101 releases the solder strip 102. Since the sensor is arranged on the mounting part 11, when the fastener 13 drives the mounting part 11 to move relative to the solder strip material roll 101, the sensor will move to a position corresponding to the release position of the solder strip 102 for sensing, thereby eliminating the adverse effect of the sensing blind area on the detection result when the sensor is fixed in the related technology, and improving the accuracy of detecting the remaining amount of the solder strip 102.

[0041] In order to facilitate understanding of the release position of the welding ribbon 102 in the present application, the following is explained by taking the application of the welding ribbon detection mechanism 10 in a photovoltaic module string welding machine as an example.

[0042] Combination Figure 1 and Figure 2 As shown, the photovoltaic module welding machine includes a welding tape winding mechanism 20 and the above-mentioned welding tape detection mechanism 10. The welding tape winding mechanism 20 is used to load the welding tape material roll 101, and the welding tape detection mechanism 10 is set corresponding to the welding tape material roll 101 of the welding tape winding mechanism 20. Specifically, the fastener 13 of the welding tape detection mechanism 10 is movably connected to the welding tape 102 pulled out by the welding tape material roll 101, and the mounting member 11 of the welding tape detection mechanism 10 is kept against the welding tape material roll 101 under the joint action of the fastener 13 and the elastic member 12. Combined with Figure 2 and Figure 3 As shown, as the solder ribbon roll 101 releases the solder ribbon 102, the diameter of the solder ribbon roll 101 gradually decreases. Since the elastic member 12 and the fastener 13 exert a pulling effect on the mounting member 11, the mounting member 11 always maintains contact with the solder ribbon roll 101.

[0043] In some embodiments, the solder strip winding mechanism 20 includes a winding drum 21 and a guide wheel 22. The solder strip roll 101 is wound on the winding drum 21, and the solder strip 102 pulled out from the solder strip roll 101 is wound around the guide wheel 22, so that when the winding drum 21 rotates to release the solder strip 102, the guide wheel 22 guides the solder strip 102 to flow out of the solder strip winding mechanism 20, so as to realize that the solder strip winding mechanism 20 continuously supplies the solder strip 102. Since the solder strip roll 101 is wound in the winding drum 21, when the solder strip 102 is released from the solder strip roll 101 on the winding drum 21, the release position of the solder strip 102 corresponding to the solder strip roll 101 corresponds to the position where the solder strip 102 is pulled out axially from the winding drum 21. It can be seen that the position corresponding to when the solder strip 102 is released from the solder strip roll 101 corresponds to the axial position of the corresponding solder strip roll 21 during the release process of the solder strip 102.

[0044] Due to the different axial winding positions of the solder strip 102 on the winding drum 21, the position where the solder strip 102 is pulled out from the winding drum is also different during the release of the solder strip 102. In other words, the position where the solder strip 102 is pulled out from the winding drum will change as the solder strip 102 is released.

[0045] In the solder tape detection mechanism 10 of the present application, since the fastener 13 is movably connected to the solder tape 102 pulled out by the solder tape roll 101, when the release position of the solder tape 102 changes, the fastener 13 will move with the solder tape 102 to keep corresponding to the release position of the solder tape 102, thereby positioning the release position of the solder tape 102, so that the mounting member 11 is always against the solder tape roll 101 at the position corresponding to the release position of the solder tape 102, so that the sensor can accurately sense whether the solder tape 102 of the solder tape roll 101 is completely released.

[0046] Combination Figure 3 As shown, when the solder strip 102 of the solder strip roll 101 is not completely released, the mounting member 11 abuts against the solder strip roll 101, and the fastener 13 moves with the solder strip 102 pulled out by the solder strip roll 101 to locate the release position of the solder strip 102 in real time, so that the sensor arranged on the mounting member 11 can sense the solder strip 102 that is not completely released in the solder strip roll 101. Figure 4 As shown, as the solder strip roll 101 continues to release the solder strip 102, after the solder strip 102 is completely released, the positioning member will abut against the winding drum 21. At this time, the sensor senses the winding drum 21 but not the solder strip 102, so that it can be determined that the solder strip 102 has been completely released.

[0047] It should be noted that the number of the guide wheel 22 can be one, or two or more. In addition, the setting position of the guide wheel 22 can also be set according to the direction in which the soldering tape winding mechanism 20 supplies the soldering tape 102, which is not limited here. Figure 5 As shown, the solder tape reeling mechanism 20 includes a guide wheel 22, which can be arranged below the fastener 13, so that the solder tape 102 passes through the fastener 13 and then goes around the guide wheel 22 downward, so that the solder tape 102 can apply a more stable tension to the fastener 13, so that the fastener 13 and the elastic member 12 can jointly hold the mounting member 11 against the solder tape roll 101. For another example, in combination with Figure 6 As shown, the welding tape winding mechanism 20 includes two guide wheels 22. After passing through the fastener 13, the welding tape 102 is sequentially wound around the two guide wheels 22 downward. The two guide wheels 22 can be used to change the pulling direction of the welding tape 102 to adapt to other mechanisms to receive the welding tape 102.

[0048] In some embodiments, the photovoltaic module string welding machine further includes a welding mechanism (not shown), a controller (not shown) and an alarm (not shown). The welding ribbon 102 released from the welding ribbon roll 101 loaded by the welding ribbon winding mechanism 20 can be supplied to the welding mechanism so that the welding mechanism uses the welding ribbon 102 for string welding of solar cells.

[0049] In this embodiment, the sensor of the welding tape detection mechanism 10 is connected to the controller signal. When the sensor senses that the welding tape material roll 101 loaded by the welding tape winding mechanism 20 is used up, the controller controls the welding tape winding mechanism 20 to stop supplying the welding tape 102 to the welding mechanism, and controls the alarm to sound an alarm. Since the welding tape detection mechanism 10 can accurately detect the remaining amount of welding tape 102, it avoids the alarm of the photovoltaic module string welding machine from giving a false alarm due to inaccurate results of detecting the welding tape 102. In this way, there is no need for the operator to review the actual use of the welding tape 102 to reduce the frequency of stopping and resuming the machine, and ensure the production efficiency of the photovoltaic module string welding machine. At the same time, based on the accurate detection of the remaining amount of welding tape 102 by the welding tape detection mechanism 10, the welding tape winding mechanism 20 can completely release the welding tape 102 of the welding tape material roll 101 to reduce the waste of welding tape 102.

[0050] The types of alarms include sound and light alarms, screen display alarms, etc. For example, in some embodiments, the alarm includes a display screen, and when the solder ribbon 102 flows to a point where the sensor cannot recognize it, the stringer stops and an alarm is sounded, and the interface of the display screen prompts information that there is no solder ribbon 102. In this way, the operator can quickly learn from the interface of the display screen that the solder ribbon 102 has been used up, so as to replace it with a new solder ribbon roll 101 in time.

[0051] In some embodiments, the mounting member 11 is made of Teflon, so that the mounting member 11 has good wear resistance, so as to extend the service life of the mounting member 11. It can be understood that since the mounting member 11 abuts against the solder strip roll 101, when the solder strip roll 101 releases the solder strip 102, friction will be generated between the solder strip roll 101 and the mounting member 11. Since in this embodiment, the mounting member 11 is made of Teflon, which has high strength and good wear resistance, the mounting member 11 made of this material has a long service life, so as to reduce the frequency of replacing the mounting member 11 and reduce the cost of maintaining the mounting member 11.

[0052] It should be noted that the mounting member 11 is in a plate shape, and the mounting member 11 is in surface contact or line contact with the solder strip material roll 101 , so as to facilitate stable contact between the mounting member 11 and the solder strip material roll 101 .

[0053] In some embodiments, the elastic member 12 includes a spring 121, one end of the spring 121 is connected to the mounting member 11, and the other end may be connected to other structures of the photovoltaic module welding machine. For example, the photovoltaic module welding machine includes a frame 30, and the winding drum 21 and the guide wheel 22 of the welding strip winding mechanism 20 are all rotatably connected to the frame 30. The frame 30 is provided with a fixing rod 31, and the spring 121 may be connected between the fixing rod 31 and the mounting member 11, so that the spring 121 provides an elastic force to keep the mounting member 11 against the welding strip material roll 101. In some embodiments, the elastic member 12 may also be an elastic rope or an elastic rod, and the type of the elastic member 12 is not limited here.

[0054] It should be noted that the setting of the elastic member 12 also has a buffering effect, which can increase the stability of the release of the soldering strip 102 from the soldering strip material roll 101. Specifically, since the fastener 13 and the elastic member 12 are both connected to the mounting member 11, and the mounting member 11 is kept against the soldering strip material roll 101, the elastic force of the elastic member 12 produces a traction effect on the fastener 13 through the mounting member 11, so that the fastener 13 can play a tensioning role on the soldering strip 102. In this way, it can ensure that the soldering strip 102 is at an appropriate tensioning degree, which not only avoids the soldering strip 102 from being too tight and easily broken, but also avoids the soldering strip 102 from being too loose and easily slipping off the guide wheel 22, thereby increasing the release stability of the soldering strip 102.

[0055] The fastener 13 may be directly connected to the mounting member 11, or may be indirectly connected to the mounting member 11 through other structures. Figure 2 As shown, in some embodiments, the solder strip detection mechanism 10 includes a support rod 14, one end of the support rod 14 is connected to the fastener 13, and the other end is connected to the mounting member 11. In this embodiment, the support rod 14 realizes the connection between the fastener 13 and the mounting member 11, so that the fastener 13 can generate traction force on the mounting member 11 under the tension of the solder strip 102, so as to improve the stability of the mounting member 11 when the solder strip material roll 101 is against each other.

[0056] Combination Figure 2 and Figure 3 As shown, the support rod 14 can be elastically deformed relative to the mounting member 11 under the action of external force, so that in the process of the solder strip roll 101 releasing the solder strip 102, as the diameter of the solder strip roll 101 gradually decreases, the mounting member 11 abuts against different positions of the solder strip roll 101, and the elastic deformation of the support rod 14 can be used to maintain the elastic contact between the mounting member 11 and the solder strip roll 101, thereby ensuring that the mounting member 11 and the solder strip roll 101 remain in abutment with each other while also avoiding the problem of excessive abutment force between the mounting member 11 and the solder strip roll 101, which may easily increase the wear of the mounting member 11.

[0057] In some embodiments, the fastener 13 is detachably connected to the mounting member 11, so that the fastener 13 can be easily disassembled and assembled for regular maintenance. For the soldering strip 102 with a tin layer on the surface, if the fastener 13 is severely worn, the tin layer on the surface of the soldering strip 102 will be scratched. Therefore, when the fastener 13 is severely worn, regularly replacing the fastener 13 with a new one can reduce the scratching of the tin layer on the surface of the soldering strip 102, thereby ensuring the quality of the soldering strip 102.

[0058] There are many possible implementations of the connection structure between the fastener 13 and the welding strip 102 .

[0059] For example, combined with Figure 2 As shown, in some embodiments, the fastener 13 has a through hole 131, and the through hole 131 is used to pass the welding tape 102. When the welding tape detection mechanism 10 is used to detect the remaining amount of the welding tape 102 wound up by the welding tape 102 coil, the welding tape 102 pulled from the welding tape 102 coil can be passed through the through hole 131 of the fastener 13, and then the welding tape 102 is sequentially led out to the welding mechanism through the guide wheel 22 of the welding tape winding mechanism 20, so as to meet the needs of the welding mechanism for welding the photovoltaic module.

[0060] For another example, in some embodiments, the fastener 13 includes a hook (not shown), which is used to hang on the welding ribbon 102. This structural design allows the hook to be directly hung on the welding ribbon 102 after the welding ribbon 102 is led out to the welding mechanism through the guide wheel 22 of the welding ribbon winding mechanism 20, which is easy to operate.

[0061] The connection method between the fastener 13 and the welding strip 102 is not described in detail here.

[0062] It can be understood that since the installation of the various components of the soldering tape detection mechanism 10 of the present application has low requirements on the structures of the photovoltaic module string welding machine such as the soldering tape winding mechanism 20, welding mechanism, controller, alarm, etc., when the soldering tape detection mechanism 10 is used to transform the existing photovoltaic module string welding machine, the original structure of the existing photovoltaic module string welding machine can be retained, and the photovoltaic module string welding machine can be quickly modified to meet the need for detecting the remaining amount of the soldering tape 102 wound by the soldering tape roll 101. The soldering tape detection mechanism 10 of the present application improves the convenience of modification and reduces the cost of modification.

[0063] The material of the fastener 13 can be ceramic, Teflon or polymer material, so that it can obtain sufficient hardness and improve the wear resistance of the fastener 13 to reduce the wear of the fastener 13 when the welding strip 102 moves relative to the fastener 13, thereby extending the service life of the fastener 13.

[0064] The connection method between the sensor and the mounting member 11 includes but is not limited to plug-in or snap-on connection.

[0065] Combination Figure 7 and Figure 8 As shown, in some embodiments, the mounting member 11 is provided with a strip groove 111, and the solder strip detection mechanism 10 further includes a connecting member (not shown), which is passed through the strip groove 111. The sensor is connected to the mounting member 11 through the connecting member. In this embodiment, the connecting member can be moved to different positions of the strip groove 111 to achieve the installation of the sensor at different positions of the mounting member 11, so that the sensor can be arranged as close to the center of the solder strip material roll 101 as possible to improve the detection effect.

[0066] The mounting member 11 is provided with a first avoidance groove 112 and a second avoidance groove 113 which are connected to the strip groove 111. The connecting member includes a bolt and a nut, the bolt having a bolt head and a bolt rod which are connected, the bolt head being received in the first avoidance groove 112, the nut being received in the second avoidance groove 113, and the bolt rod being threadedly matched with the nut. In this embodiment, the first avoidance groove 112 and the second avoidance groove 113 are used to meet the receiving needs of the bolt head and the nut respectively, so as to prevent the bolt head and the nut from protruding from the mounting member 11 and easily scratching the welding strip 102.

[0067] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the inventive concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A welding strip detection mechanism (10), characterized in that: The solder strip detection mechanism (10) is used to detect the remaining amount of the solder strip (102) rolled up by the solder strip material roll (101), and the solder strip detection mechanism (10) comprises: Mounting member (11); An elastic member (12), the elastic member (12) being connected to the mounting member (11); a fastener (13), the fastener (13) being connected to the mounting member (11), the fastener (13) being used to be movably connected to the soldering strip (102) pulled out by the soldering strip roll (101), and when the soldering strip roll (101) releases the soldering strip (102), the fastener (13) and the elastic member (12) jointly keep the mounting member (11) against the soldering strip roll (101) under the action of the tension of the soldering strip (102); A sensor, the sensor being arranged on the mounting member (11), and being used for sensing the welding strip (102).

2. The welding strip detection mechanism (10) according to claim 1, characterized in that: The material of the mounting piece (11) is Teflon, and / or the mounting piece (11) is plate-shaped, and the mounting piece (11) is in surface contact or line contact with the solder strip roll (101).

3. The welding strip detection mechanism (10) according to claim 1 or 2, characterized in that: The mounting member (11) is provided with a strip groove (111), and the welding strip detection mechanism (10) further comprises a connecting member, the connecting member is passed through the strip groove (111), and the sensor is connected to the mounting member (11) via the connecting member.

4. The welding strip detection mechanism (10) according to claim 3, characterized in that: The mounting member (11) is provided with a first avoidance groove (112) and a second avoidance groove (113) which are connected to the strip groove (111); the connecting member comprises a bolt and a nut; the bolt has a bolt head and a bolt rod which are connected to each other; the bolt head is received in the first avoidance groove (112); the nut is received in the second avoidance groove (113); the bolt rod is threadably matched with the nut.

5. The welding strip detection mechanism (10) according to claim 1, characterized in that: The elastic member (12) comprises a spring (121), an elastic rope or an elastic rod.

6. The welding strip detection mechanism (10) according to claim 1, characterized in that: The fastener (13) has a through hole (131), and the through hole (131) is used to penetrate the welding strip (102); Alternatively, the fastener (13) comprises a hook, and the hook is used to be hung on the welding strip (102).

7. The welding strip detection mechanism (10) according to claim 1, characterized in that: The fastener (13) is made of ceramic, Teflon or polymer material.

8. The welding strip detection mechanism (10) according to claim 1, characterized in that: The welding strip detection mechanism (10) comprises a support rod (14), one end of the support rod (14) being connected to the fastener (13), and the other end of the support rod (14) being connected to the mounting member (11).

9. The welding strip detection mechanism (10) according to claim 8, characterized in that: The support rod (14) can be elastically deformed relative to the mounting member (11) under the action of an external force.

10. A photovoltaic module string welding machine, characterized in that: The invention comprises a solder strip reeling mechanism (20), a welding mechanism, a controller, an alarm, and a solder strip detection mechanism (10) as claimed in any one of claims 1 to 9, wherein the solder strip reeling mechanism (20) is used to load a solder strip material roll (101) and supply solder strip (102) to the welding mechanism, and the sensor of the solder strip detection mechanism (10) is connected to the controller signal. When the sensor senses that the solder strip material roll (101) loaded by the solder strip reeling mechanism (20) is used up, the controller controls the solder strip reeling mechanism (20) to stop supplying solder strip (102) to the welding mechanism, and controls the alarm to sound an alarm.

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