String repairing tool

Abstract

The utility model belongs to the technical field of welding, and discloses a string repairing tool. The string repair tool comprises a pen container, a welding head, a rechargeable power supply, a scaling powder pen point and a flow controller. Wherein the pen container comprises a mounting cavity and a soldering flux storage cavity which are independent from each other; the welding head is arranged at one end of the pen container close to the mounting cavity; the rechargeable power supply is arranged in the mounting cavity and is electrically connected to the welding head; the scaling powder pen point is arranged at the end, close to the scaling powder storage cavity, of the pen container, and a scaling powder outlet communicating with the scaling powder storage cavity and the outside is formed in the scaling powder pen point. The flow controller is used for controlling the opening degree of the scaling powder outlet so as to adjust the flow of the scaling powder. According to the string of repair tools, the rechargeable welding pen and the soldering flux pen are integrated, the convenience and efficiency of repair work are improved, the outflow speed of soldering flux is controllable, various repair scenes can be flexibly coped with, and the use experience feeling of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a string repair tool. Background Art

[0002] During the manufacturing process of photovoltaic modules, the whole cell is diced and the half cell is strung together into a cell string through a stringing machine and welding ribbons. This process is affected by many factors such as welding temperature, press pressure, and flux quality. The cell and welding ribbons are prone to defects such as cold soldering, over-soldering or biased soldering.

[0003] This type of defect requires manual repair by staff. The current repair method is to manually remove the solder strip with poor soldering, then use a cylindrical container filled with flux, use a cotton pen tip to ooze the flux and apply it around the solder joint, and then use a sitting electric soldering iron for secondary soldering. This type of seepage flux is not completely sealed, and the flux is easy to volatilize, which makes the flux storage time short. The cotton pen tip is easily clogged due to flux crystallization, and the flux seepage speed cannot be controlled, resulting in a poor user experience. In addition, the sitting electric soldering iron has a fixed station and is not flexible to use.

[0004] Therefore, it is urgent to propose a string repair tool to solve the above technical problems. Utility Model Content

[0005] The utility model provides a series rework tool, which integrates a rechargeable soldering pen and a flux pen, improves the convenience and efficiency of the rework work, and the outflow speed of the flux is controllable, which can flexibly cope with various rework scenarios, and improves the user experience.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] String rework tooling, including:

[0008] A pen holder, the pen holder comprising a mounting cavity and a flux storage cavity which are independent of each other;

[0009] A welding head is arranged at one end of the pen barrel close to the mounting cavity;

[0010] A rechargeable power source is disposed in the mounting cavity and electrically connected to the welding head;

[0011] A soldering flux pen tip is arranged at one end of the pen barrel close to the soldering flux storage cavity, and the soldering flux pen tip is provided with a soldering flux outlet communicating with the soldering flux storage cavity and the outside;

[0012] The flow controller is used to control the opening of the soldering flux outlet to adjust the flow of the soldering flux.

[0013] Optionally, the flow controller includes a sliding switch slidably connected to the outer wall of the pen barrel, and a throttle head connected to the sliding switch and placed in the flux storage chamber, and the sliding switch adjusts the size of the flux outlet by driving the throttle head close to or away from the flux outlet.

[0014] Optionally, the throttling head is a stepped shaft structure, and the end of the stepped shaft structure with a smaller diameter faces the flux outlet;

[0015] Alternatively, the throttling head is a conical structure, and the conical head of the conical structure faces the flux outlet.

[0016] Optionally, a guide channel extending along the axial direction of the pen barrel is provided in the flux pen tip, one end of the guide channel is connected to the flux storage cavity, and the other end is connected to the flux outlet.

[0017] Optionally, an elastic protective sleeve is provided on the flux pen tip at the outer edge of the flux outlet.

[0018] Optionally, the welding head includes a heating core, a heat transfer functional layer wrapped around the heating core, and a welding tongue connected to the heat transfer functional layer; a control circuit electrically connected to the heating core is provided in the installation cavity; the control circuit includes a temperature control module; the temperature control module is used to control the heating temperature of the heating core; a temperature adjustment knob is provided on the outer wall of the pen barrel; the temperature adjustment knob is electrically connected to the temperature control module for inputting temperature control instructions.

[0019] Optionally, a temperature display screen is provided outside the pen barrel, and the temperature display screen is electrically connected to the control circuit for displaying the temperature of the heating core.

[0020] Optionally, a heat insulation layer is provided between the welding head and the pen holder.

[0021] Optionally, the heat transfer functional layer includes a copper layer, an iron plating layer and a chrome plating layer which are sequentially arranged from the inside to the outside.

[0022] Optionally, the pen holder includes a first pen holder and a second pen holder that are detachably connected, the first pen holder is provided with the installation cavity, the second pen holder is provided with the flux storage cavity, the welding head is arranged at an end of the first pen holder away from the second pen holder, the flux pen head is arranged at an end of the second pen holder away from the first pen holder, an openable and closable flux filling port is provided at an end of the second pen holder facing the first pen holder, and after the second pen holder is connected to the first pen holder, the first pen holder covers the flux filling port.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides a series of repair tools, including a pen holder, a welding head, a rechargeable power supply, a soldering flux pen head and a flow controller. The welding head and the soldering flux pen head are respectively arranged at the two ends of the pen holder, and are respectively used for welding and providing soldering flux, that is, the series of repair tools integrates the soldering pen and the soldering flux pen together, which improves the convenience during repair, and further improves the repair efficiency. In addition, a rechargeable power supply is provided, so that the series of repair tools can be flexibly moved, and the use flexibility is high.

[0025] By setting a flow controller to control the flow of flux in the flux pen tip, a variety of rework needs can be met, and the flux outlet can also be closed by the flow controller, which can not only prevent the flux from volatilizing and extend the shelf life of the flux, but also reduce the risk of flux drying and crystallization clogging the flux outlet, greatly improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the structure of the string repair tool provided by the embodiment of the utility model Figure 1 (showing the internal structure);

[0028] Figure 2 This is a schematic diagram of the structure of the string repair tool provided by the embodiment of the utility model Figure 2 (internal structure not shown);

[0029] Figure 3 It is a structural schematic diagram of a welding head provided in an embodiment of the utility model.

[0030] In the figure:

[0031] 100, pen holder; 110, first pen holder; 111, mounting cavity; 120, second pen holder; 121, solder flux storage cavity; 122, solder flux filling port; 130, temperature adjustment knob; 140, electric welding switch;

[0032] 200, welding head; 210, heating core; 220, heat transfer functional layer; 221, copper layer; 222, iron plating layer; 223, chrome plating layer; 230, welding tongue;

[0033] 300, rechargeable power source; 310, charging port;

[0034] 400, soldering flux pen tip; 410, soldering flux outlet; 420, diversion channel;

[0035] 500, flow controller; 510, slide switch; 520, throttle head;

[0036] 600, control circuit;

[0037] 700, temperature display screen;

[0038] 800. Thermal insulation layer. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] This embodiment provides a string rework tool, which integrates a rechargeable soldering pen and a flux pen, thereby improving the convenience and efficiency of the rework work. The outflow speed of the flux is controllable, and it can flexibly cope with various rework scenarios, thereby improving the user experience.

[0044] Specifically, Figure 1-Figure 3 As shown, the series of rework tools includes a pen holder 100, a welding head 200, a rechargeable power supply 300, a soldering flux pen head 400 and a flow controller 500.

[0045] The pen holder 100 includes an independent installation cavity 111 and a flux storage cavity 121, the rechargeable power supply 300 is arranged in the installation cavity 111, and the flux storage cavity 121 is used to store flux. A welding head 200 is arranged at one end of the pen holder 100 close to the installation cavity 111, and the welding head 200 is electrically connected to the rechargeable power supply 300 to form a welding pen, and a flux pen head 400 is arranged at one end of the pen holder 100 close to the flux storage cavity 121, and a flux outlet 410 connecting the flux storage cavity 121 and the outside is provided on the flux pen head 400, and the flux in the flux storage cavity 121 can flow out from the flux outlet 410 to form a flux pen. That is, the string of rework tools integrates the soldering pen and the flux pen together, which improves the convenience during rework, and thus improves the rework efficiency.

[0046] In addition, a flow controller 500 is provided to control the opening of the flux outlet 410 to adjust the flux flow. A variety of rework requirements can be met, and the flux outlet 410 can also be closed by the flow controller 500. Compared with the traditional cylindrical penetration flux pen, it can not only prevent the flux from volatilizing and extend the storage time of the flux, but also reduce the risk of the flux drying and crystallizing and clogging the flux outlet 410, greatly improving the user experience.

[0047] Optionally, continue to see Figure 1 and Figure 2 A charging port 310 is also provided on the pen holder 100 , and a user can charge the rechargeable power source 300 through the charging port 310 .

[0048] Further, see Figure 1 In this embodiment, in order to guide the flow direction of the soldering flux, a guide channel 420 extending along the axial direction of the pen barrel 100 is provided in the soldering flux pen tip 400, one end of the guide channel 420 is connected to the soldering flux storage chamber 121, and the other end is connected to the soldering flux outlet 410. By providing the guide channel 420, the soldering flux can be made to flow out evenly along the axial direction of the pen barrel 100, which is conducive to improving the uniformity of the soldering flux application.

[0049] It is worth mentioning that when applying the flux, the flow controller 500 can be controlled in advance to block the guide channel 420 based on experience, so that the flux pre-stored in the guide channel 420 can just meet the required amount of flux added after all flows out. This can not only avoid the flux entering the guide channel 420 from being dried up and wasted due to long-term non-use, but also avoid clogging the flux outlet 410 after drying.

[0050] Further, see Figure 1 The flow controller 500 includes a sliding switch 510 slidably connected to the outer wall of the pen barrel 100, and a throttle head 520 connected to the sliding switch 510 and placed in the flux storage chamber 121. The throttle head 520 can throttle the flux outlet 410 to control the size of the flux outlet 410, thereby controlling the outflow speed of the flux.

[0051] Specifically, driving the sliding switch 510 to slide can cause the sliding switch 510 to drive the throttling head 520 to move, so as to change the distance between the throttling head 520 and the flux outlet 410. Different distances between the throttling head 520 and the flux outlet 410 result in different blocking areas of the flux outlet 410, and thus different throttling degrees.

[0052] Optionally, continue to see Figure 1 In a possible embodiment, the throttle head 520 is a stepped shaft structure, and the end of the stepped shaft structure with a smaller diameter faces the flux outlet 410. That is, according to the characteristics of different diameters of each shaft section of the stepped shaft structure, different throttling requirements can be met, the structure is simple, and the processing is convenient.

[0053] Optionally, in other possible embodiments, the throttle head 520 may also be a conical structure, with the conical head of the conical structure facing the flux outlet 410. The conical structure has different cross-sectional areas, and based on this feature, the blocking area of ​​the flux outlet 410 can be infinitely adjusted, with higher adjustment flexibility.

[0054] Furthermore, in this embodiment, the sliding switch 510 is connected to the throttle head 520 via an L-shaped connecting rod, and the sliding switch 510 slides along the axial direction of the pen holder 100 , and the L-shaped connecting rod can make the throttle head 520 and the sliding switch 510 slide synchronously.

[0055] Furthermore, an elastic protective sleeve can be provided on the outer edge of the flux outlet 410 on the flux tip 400. With such a configuration, when the flux tip 400 contacts the battery cell, the elastic protective sleeve can buffer the contact force to a certain extent, thereby reducing the risk of hidden cracks in the battery cell caused by excessive contact force. Optionally, the material of the elastic protective sleeve can be rubber, which has good elasticity, is easy to process, is wear-resistant, and has low cost.

[0056] Further, see Figure 1 and Figure 3 The welding head 200 includes a heating core 210, a heat transfer functional layer 220 wrapped outside the heating core 210, and a welding tongue 230 connected to the heat transfer functional layer 220. The heating core 210 transfers heat to the welding tongue 230 through the heat transfer functional layer 220, and the welding tongue 230 is used for welding.

[0057] A control circuit 600 electrically connected to the heating core 210 is provided in the installation cavity 111. The control circuit 600 includes a temperature control module, which is used to control the heating temperature of the heating core 210. A temperature adjustment knob 130 is provided on the outer wall of the pen holder 100. The temperature adjustment knob 130 is electrically connected to the temperature control module for inputting temperature control instructions.

[0058] Specifically, after the control circuit 600 is turned on, the temperature adjustment knob 130 is turned to set the desired temperature, and the temperature control module receives the temperature command, and then controls the heating core 210 to heat to the desired temperature. By setting the temperature control module, the requirements of different welding temperatures can be met, and the universality of the above-mentioned string repair tool is improved; and the temperature is controlled by the temperature adjustment knob 130, which is simple and convenient to adjust.

[0059] Optionally, in this embodiment, the temperature control module can also control the heating core 210 to maintain a constant temperature. In this way, the temperature of the welding head 200 can be kept stable during welding, thereby ensuring the welding quality.

[0060] It is worth noting that what needs to be protected in this application is that the control circuit 600 has a temperature control module that can control the temperature of the heating core 210 and maintain a constant temperature, rather than the specific structure of the control circuit 600. The specific circuit connection structure of the control circuit 600 is a prior art, so it will not be described in detail.

[0061] Further, see Figure 1 and Figure 2 The pen holder 100 is provided with a temperature display screen 700, which is electrically connected to the control circuit 600 and is used to display the temperature of the heating core 210. By providing the temperature display screen 700, the user can intuitively observe the current temperature of the welding head 200.

[0062] Further, see Figure 1 A heat insulation layer 800 is provided between the welding head 200 and the pen holder 100. The heat insulation layer 800 has the effect of isolating the welding head 200 from transferring the temperature to the pen holder 100, thereby preventing the pen holder 100 from overheating and scalding the user.

[0063] Optionally, continue to see Figure 3In this embodiment, the heat transfer functional layer 220 includes a copper layer 221, an iron-plated layer 222, and a chrome-plated layer 223 arranged in sequence from the inside to the outside. The copper layer 221 has high thermal conductivity and fast temperature recovery, which is conducive to quickly transferring heat to the solder tongue 230. The iron-plated layer 222 has high thermal conductivity and can protect the copper layer 221, and the chrome-plated layer 223 can effectively prevent corrosion and prevent tin creep.

[0064] The welding head 200 can be heated to 100°C-140°C, and the overall heating time is 10s-15s. After welding is completed, the circuit-breaking heating core 210 stops generating heat, and the temperature of the welding head 200 can drop to room temperature within 10s-20s.

[0065] Optionally, continue to see Figure 1 and Figure 2 The pen holder 100 is also provided with a welding switch 140, which is used to realize the conduction of the control circuit 600, the heating core 210 and the rechargeable power source 300. The welding switch 140 is set on the pen holder 100, and the welding pen can be turned on by pressing it once, and the welding pen can be turned off by pressing it again, which is simple and convenient to operate.

[0066] Further, see Figure 1 In this embodiment, the pen holder 100 includes a first pen holder 110 and a second pen holder 120 that are detachably connected. The first pen holder 110 is provided with a mounting cavity 111, the second pen holder 120 is provided with a solder flux storage cavity 121, the soldering head 200 is arranged at one end of the first pen holder 110 away from the second pen holder 120, and the solder flux pen head 400 is arranged at one end of the second pen holder 120 away from the first pen holder 110. In this way, a soldering pen and a solder flux pen can be separated into two independent individuals, and the usage methods are flexible and diverse, which is conducive to meeting the various usage needs of users.

[0067] Optionally, the first pen holder 110 and the second pen holder 120 can be directly connected by a threaded connection. The threaded connection has high strength, is easy to install and disassemble, and repeated disassembly will not affect the connection strength.

[0068] Further, see Figure 1 The second pen holder 120 is provided with an openable and closable flux filling port 122 at one end facing the first pen holder 110. After the second pen holder 120 is connected to the first pen holder 110, the first pen holder 110 covers the flux filling port 122. In this way, the flux filling port 122 can be hidden between the first pen holder 110 and the second pen holder 120, avoiding leakage of flux due to accidental touching of the flux filling port 122.

[0069] In this embodiment, the flux storage chamber 121 occupies most of the volume of the second pen holder 120, which can realize the addition of large-capacity flux, facilitate continuous use, reduce the number of times the flux is refilled, and at the same time balance the weight of the welding head 200 end and the flux pen head 400 end, thereby improving the feel of use.

[0070] The method of using the above string repair tool for repair is as follows:

[0071] The repair personnel find the repair point, remove the defective soldering strip, use the flux pen tip 400, determine the flux application area according to the soldering area, and control the slide switch 510 to release the flux.

[0072] After the soldering flux is applied, the slide switch 510 is controlled to make the throttle head 520 close the soldering flux outlet 410 to maintain a sealed state.

[0073] Use welding head 200 instead, turn on welding switch 140, adjust the temperature by temperature adjustment knob 130, observe temperature display screen 700, wait for the temperature of welding tongue 230 to rise to the required welding temperature, adjust the position of welding strip, add tin bar for welding, ensure that the welding pen tip is at an angle of about 45° with the welding surface to avoid damaging the battery cell.

[0074] After welding is completed, the welding switch 140 is turned off, and the repaired battery string is put back online for testing.

[0075] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A string repair tool, characterized in that: include: A pen holder (100), the pen holder (100) comprising a mounting cavity (111) and a soldering flux storage cavity (121) which are independent of each other; A welding head (200) is arranged at one end of the pen holder (100) close to the mounting cavity (111); A rechargeable power source (300) is disposed in the mounting cavity (111) and is electrically connected to the welding head (200); A soldering flux pen tip (400) is arranged at one end of the pen barrel (100) close to the soldering flux storage cavity (121), and a soldering flux outlet (410) is provided on the soldering flux pen tip (400) for connecting the soldering flux storage cavity (121) and the outside; A flow controller (500) is used to control the opening of the soldering flux outlet (410) to adjust the flow of the soldering flux.

2. The string repair tool according to claim 1, characterized in that: The flow controller (500) comprises a sliding switch (510) slidably connected to the outer wall of the pen holder (100), and a throttle head (520) connected to the sliding switch (510) and placed in the flux storage chamber (121); the sliding switch (510) adjusts the size of the flux outlet (410) by driving the throttle head (520) to approach or move away from the flux outlet (410).

3. The string repair tool according to claim 2, characterized in that: The throttling head (520) is a stepped shaft structure, and the end of the stepped shaft structure with a smaller diameter faces the soldering flux outlet (410); Alternatively, the throttling head (520) is a conical structure, and the conical head of the conical structure faces the flux outlet (410).

4. The string repair tool according to claim 1, characterized in that: The flux pen tip (400) is provided with a guide channel (420) extending in the axial direction of the pen barrel (100); one end of the guide channel (420) is connected to the flux storage cavity (121), and the other end is connected to the flux outlet (410).

5. The string repair tool according to claim 1, characterized in that: On the soldering flux pen tip (400), an elastic protective sleeve is sleeved on the outer edge of the soldering flux outlet (410).

6. The string repair tool according to claim 1, characterized in that: The welding head (200) comprises a heating core (210), a heat transfer functional layer (220) wrapped around the heating core (210), and a welding tongue (230) connected to the heat transfer functional layer (220); a control circuit (600) electrically connected to the heating core (210) is provided in the installation cavity (111); the control circuit (600) comprises a temperature control module, and the temperature control module is used to control the heating temperature of the heating core (210); a temperature adjustment knob (130) is provided on the outer wall of the pen holder (100); the temperature adjustment knob (130) is electrically connected to the temperature control module and is used to input temperature control instructions.

7. The string repair tool according to claim 6, characterized in that: The pen holder (100) is provided with a temperature display screen (700) outside, and the temperature display screen (700) is electrically connected to the control circuit (600) and is used to display the temperature of the heating core (210).

8. The string repair tool according to claim 1, characterized in that: A heat insulation layer (800) is provided between the welding head (200) and the pen holder (100).

9. The string repair tool according to claim 6, characterized in that: The heat transfer functional layer (220) comprises a copper layer (221), an iron plating layer (222) and a chrome plating layer (223) which are arranged in sequence from the inside to the outside.

10. The string repair tool according to any one of claims 1 to 9, characterized in that: The pen holder (100) comprises a first pen holder (110) and a second pen holder (120) which are detachably connected, the first pen holder (110) is provided with the installation cavity (111), the second pen holder (120) is provided with the flux storage cavity (121), the welding head (200) is arranged at one end of the first pen holder (110) away from the second pen holder (120), the flux pen head (400) is arranged at one end of the second pen holder (120) away from the first pen holder (110), an openable and closable flux filling port (122) is provided at one end of the second pen holder (120) facing the first pen holder (110), and after the second pen holder (120) is connected to the first pen holder (110), the first pen holder (110) covers the flux filling port (122).

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