Module power supply welding equipment

Abstract

The invention discloses module power supply welding equipment which comprises a heating control module, a heating module and a heating tool, the heating module comprises a heating plate and a heating wire, the heating plate and the heating tool are tightly attached through a fastener, the heating wire is connected into the heating control module, a boss with the same proportion as a bus bar is arranged at the top of the heating tool, and the boss is connected with the bus bar. A positioning column is arranged on the top of the heating tool and used for positioning and bearing a heating product needing to be welded. Products are heated in an auxiliary mode through the welding heating equipment, the heating equipment has a temperature control function, the temperature of the equipment in the whole welding process is controllable, and the risk that devices are damaged due to the fact that the welding temperature is too high is avoided.

Description

Technical Field

[0001] The present invention relates to a welding device, and more particularly to a module power supply welding device. Background Art

[0002] Some power products are equipped with large-sized busbars, and their unique physical properties pose challenges in the welding process. Due to the large surface area of the busbar and its good heat conduction performance, when welding the peripheral devices of the busbar, it will quickly absorb heat, making it difficult for ordinary welding methods to meet the requirements.

[0003] To solve this problem, the currently adopted welding method is to heat simultaneously using a hot air gun and a soldering iron. However, this method has many drawbacks. In actual operation, since it is necessary to operate the hot air gun and the soldering iron simultaneously, it requires extremely high skills and coordination abilities of the operator, and it is almost impossible for a single person to complete the welding work, which undoubtedly increases the labor cost and reduces the production efficiency.

[0004] In terms of temperature control, the current dual-heating welding method also has obvious deficiencies. When the hot air gun and the soldering iron work simultaneously, the on-site temperature field is complex, and it is difficult to accurately measure and control the real-time temperature by conventional means. In actual production, the temperature often becomes too high, which causes non-negligible damage to the surrounding devices. Once the devices are damaged, not only the product performance cannot be guaranteed, but also the defective rate of the product increases, increasing the production cost and after-sales risk. Summary of the Invention

[0005] To solve the problem that the too large surface area of the busbar in the power product affects the welding efficiency, the present invention provides a module power supply welding device. By using this welding heating device to assist in heating the product, the welding operator can independently weld the product only with a soldering iron, and the temperature of the device can be controlled during the whole welding process, avoiding damage to the devices due to excessive temperature during the welding process.

[0006] The present invention provides the following technical solutions: To solve the problems in the current new product welding process, we introduce a brand-new welding heating device. Previously, due to the high heat absorption rate of the large-sized busbar of the product during welding, it was necessary to cooperate the hot air gun and the soldering iron, which was inconvenient to operate and could not be completed by a single person. Now, with the assistance of this dedicated welding heating device to heat the product, the situation has been greatly improved.

[0007] A module power supply welding device includes a heating control module, a heating module and a heating tooling. The heating module includes a heating plate and heating wires. The heating plate and the heating tooling are tightly attached through fasteners. The heating wires are connected into the heating control module. A boss with the same proportion as the bus bar is arranged on the top of the heating tooling. Positioning posts are arranged on the top of the heating tooling for positioning and carrying the heating products to be welded. The temperature of the heating control module is set at 110°C - 150°C.

[0008] Further, the heating control module includes a power on / off button, a circuit breaker, a relay, a temperature controller and a temperature sensor. The output end of the power on / off button is connected to the circuit breaker. The output end of the circuit breaker is connected to the relay. The relay and the temperature controller are connected to each other. The output end of the circuit breaker is connected to the heating plate. The output end of the temperature sensor is connected to the temperature controller.

[0009] Further, 220V AC alternating current is input to the power on / off button. The power on and off are controlled through the power on / off button. The circuit breaker ensures the circuit safety. The temperature sensor monitors the temperature of the heating plate in real time and feeds it back to the temperature controller. The temperature controller controls the relay according to the feedback signal, and then controls the heating state of the heating plate.

[0010] Further, a heat insulation layer is arranged around the boss.

[0011] Further, welding areas are provided on the heating products. Each group of connector terminals is arranged within the welding areas, and each temperature test point is located at each group of connector terminals.

[0012] Further, the temperature test points are respectively a first temperature test point, a second temperature test point, a third temperature test point, a fourth temperature test point, a fifth temperature test point and a sixth temperature test point. The corresponding sides of each temperature test point are connector temperature test points.

[0013] In the above technical solution, when the temperature of the heating control module is set at 150°C, the six temperature test points are at 128 - 132°C, and the surface temperature of the connector is 120°C at this time.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. When the device is used, the welding product is placed at the designated position of the heating tooling. The device heats the position of the product bus bar to increase the welding temperature. A boss with a 1:1 ratio to the bus bar is arranged on the top of the heating tooling. Heat is transferred to the product through this boss, quickly preheating the product, canceling the step of the welding operator using a hot air gun for auxiliary heating. Only an electric soldering iron can be used to weld high heat-absorbing devices, greatly improving the welding efficiency; 2. The present invention uses this welding heating device to assist in heating the product, and the heating device has a heating control module to achieve precise control of the welding temperature. When the temperature of the heating control module is gradually set to 150°C, the surface temperature of the connector is 120°C at this time, which also avoids the risk of device damage caused by excessive welding temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the electrical schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the welding heating device of the present invention; Figure 3 is the perspective view of the welding heating device of the present invention; Figure 4 is the schematic diagram of the heating tooling of the present invention; Figure 5 is the schematic diagram of the heated product of the present invention; Figure 6 is Figure 4 the perspective view of.

[0016] In the figure: 100, heating control module, 101, power on / off button, 102, circuit breaker, 103, relay, 104, temperature controller, 105, temperature sensor; 200, heating module, 201, heating plate, 202, heating wire; 300, heating tooling, 301, boss, 302, heat insulation layer, 303, positioning post; 400, temperature test point, 401, first temperature test point, 402, second temperature test point, 403, third temperature test point, 404, fourth temperature test point, 405, fifth temperature test point, 406, sixth temperature test point; 407, connector temperature test point. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] A module power supply welding device provided by the present invention includes a heating control module 100, a heating module 200, and a heating tooling 300. The heating module 200 includes a heating plate 201 and heating wires 202. The heating plate 201 is closely attached to the heating tooling 300 through fasteners. The heating wires 202 are connected to the heating control module 100. A boss 301 with the same proportion as the busbar is provided at the top of the heating tooling 300.

[0019] Heating control module: It includes a housing, a power on / off button 101, a circuit breaker 102, a relay 103, a temperature controller 104, a temperature sensor 105, and internal wires, etc. The housing size is 202*202*40mm and it is made by aluminum alloy sheet metal process. The above components such as the power on / off button and the circuit breaker are all placed inside this housing and are installed by screws. See Figure 1 .

[0020] The output end of the power on / off button 101 is connected to the circuit breaker 102, the output end of the circuit breaker 102 is connected to the relay 103, the relay 103 is connected to the temperature controller 104, the output end of the circuit breaker 102 is connected to the heating plate 201, and the output end of the temperature sensor 105 is connected to the temperature controller 104.

[0021] Figure 1 As shown, the working process of the whole system is: After the 220V AC alternating current is input into the power on / off button 101, the power on / off is controlled by the power on / off button 101, and the circuit breaker 102 ensures the circuit safety. The temperature sensor 105 monitors the temperature of the heating plate 201 in real time and feeds it back to the temperature controller 104. The temperature controller 104 controls the relay 103 according to the feedback signal, and then controls the heating state of the heating plate 201 to achieve precise control of the welding temperature.

[0022] Heating module: It includes a heating plate 201 and heating wires 202. The heating plate 201 is tightly attached to the heating tooling 300 by screws, and the heating wires 202 are connected into the heating control module 100. See Figure 2 , Figure 3 .

[0023] Heating tooling: The heating tooling is a customized part with a size of 202*202*20mm. There are several mounting holes designed at the bottom for fixing the body and the heating module. There are several bosses and positioning posts 303 ( Figure 6 ) on the top of the heating tooling, which are used for positioning and carrying the heating products to be welded. Specifically, bosses with a 1:1 ratio to the bus bar are designed on the top of the heating tooling, and heat is transferred to the products through these bosses. Figure 6 As shown, and there is a heat insulation layer 302 around the boss 301 to avoid excessive heat transfer from the bus bar to the air. See the heating tooling Figure 4 .

[0024] Bosses 301 with the same ratio as the bus bar are set on the top of the heating tooling 300, so that the products are heated evenly and the heat conduction efficiency is improved.

[0025] - Uniform heating: The boss and the bus bar are designed in the same proportion, which can maximize the contact area between the heating tooling and the bus bar and make the distribution uniform. When the heating tooling works, heat is transferred to the bus bar through the boss. Due to the uniform contact area, each part of the bus bar can receive relatively uniform heat, avoiding local overheating or overcooling, and ensuring the consistency of the overall temperature of the bus bar.

[0026] - Improved heat conduction efficiency: The bosses in the same proportion increase the number of contact points and the contact area with the bus bar. According to the heat conduction principle, the larger the contact area, the smaller the thermal resistance, and the higher the heat transfer efficiency. This can effectively improve the heat transfer efficiency from the heating tooling to the bus bar, reduce heat loss, heat the bus bar to the required temperature faster, and improve production efficiency.

[0027] The heating product is shown in Figure 5 , the black wireframe area H is the welding area. Inside the black wireframe are groups of connector terminals. At each group of connector terminals are temperature test points 400, which are the first temperature test point 401, the second temperature test point 402, the third temperature test point 403, the fourth temperature test point 404, the fifth temperature test point 405, and the sixth temperature test point 406 respectively. The side corresponding to each temperature test point is the connection temperature test point 408.

[0028] A welding heating device for a matching product of the present invention has several components including a heating control module, a heating module, and heating tooling. Except for the electrical components which are standard parts, the rest are custom processed.

[0029] Table 1 Heating capacity test table: Considering that the maximum temperature that the plastic connector can withstand is 125°C, the heating control module monitors the connector temperature while setting the temperature rise. When the temperature of the heating control module gradually increases from 110° to 150°C, when the temperature of the heating control module is 150°C, the temperature test points 1 - 6 are around 130°C, and at this time the surface temperature of the connector is 120°C. It is determined that this set temperature is the upper limit of this product.

[0030]

[0031] During the actual use test, when using a 120W soldering iron for welding, the welding of the solder joints has been greatly improved and can meet the process requirements.

[0032] When designing the welding process, according to Fourier's law , calculate the heat of heat conduction, where Q is the heat flux, k is the thermal conductivity of the material, A is the heat transfer area, is the temperature gradient.

[0033] When welding the bus bar, this formula can be used to analyze the heat conduction in the bus bar, and then optimize the welding parameters such as welding time, temperature, etc., to ensure that the welded part obtains sufficient heat to complete the welding, and at the same time, it will not cause overheating of the surrounding devices due to excessive heat absorption by the bus bar.

[0034] Table 2 Welding effect table under different welding parameters

[0035] When the temperature of the heating control module is 150 °C, considering that the maximum temperature that the plastic connector can withstand is 125 °C, the welding quality is good at this time, and the temperature of the surrounding devices is within the safe range.

[0036] When the equipment is in use, place the product at the designated position of the heating tooling. The equipment heats the bus bar position of the product to raise the welding temperature, eliminating the step of the welder using a hot air gun for auxiliary heating. Only an electric soldering iron can be used to weld high heat-absorbing devices, greatly improving the welding efficiency. And the heating equipment has a temperature control function, which also avoids the risk of device damage caused by too high welding temperature.

[0037] Now, the welder only needs to use an electric soldering iron to independently complete the welding work of the product. The equipment is equipped with a precise temperature control system. The operator can flexibly and precisely set and adjust the temperature according to the welding requirements of the product through the simple and clear operation interface on the equipment panel. During the entire welding process, the equipment always stably controls the temperature within the set range, avoiding the excessive temperature situation caused by difficult temperature control in the past, fundamentally eliminating the risk of device damage caused by too high welding temperature, and effectively improving the welding quality and production efficiency of the product.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A module power supply welding device, characterized in that: It includes a heating control module (100), a heating module (200) and a heating tooling (300). The heating module (200) includes a heating plate (201) and heating wires (202). The heating plate (201) and the heating tooling (300) are closely attached by fasteners. The heating wires (202) are connected into the heating control module (100). A boss (301) with the same proportion as the bus bar is provided at the top of the heating tooling (300). Positioning posts (303) are provided at the top of the heating tooling (300) for positioning and carrying the heating products to be welded. The temperature of the heating control module (100) is set at 110°C - 150°C.

2. The module power supply welding device according to claim 1, characterized in that: The heating control module includes a power on / off button (101), a circuit breaker (102), a relay (103), a temperature controller (104) and a temperature sensor (105). The output end of the power on / off button (101) is connected to the circuit breaker (102). The output end of the circuit breaker (102) is connected to the relay (103). The relay (103) and the temperature controller (104) are connected to each other. The output end of the circuit breaker (102) is connected to the heating plate (201). The output end of the temperature sensor (105) is connected to the temperature controller (104).

3. The module power supply welding equipment according to claim 2, characterized in that: 220V AC alternating current is input to the power on / off button (101). The power on / off button (101) controls the power on and off. The circuit breaker (102) ensures the circuit safety. The temperature sensor (105) monitors the temperature of the heating plate (201) in real time and feeds it back to the temperature controller (104). The temperature controller (104) controls the relay (103) according to the feedback signal, and then controls the heating state of the heating plate (201).

4. The module power supply welding device according to claim 1, characterized in that: A heat insulation layer (302) is provided around the boss (301).

5. The modular power supply welding device according to claim 1, characterized in that: The heating product has a welding area, and each group of connector terminals is located in the welding area. Each temperature test point (400) is located at each group of connector terminals.

6. The module power supply welding device according to claim 5, wherein: The temperature test points (400) are respectively a first temperature test point (401), a second temperature test point (402), a third temperature test point (403), a fourth temperature test point (404), a fifth temperature test point (405) and a sixth temperature test point (406). The side corresponding to each temperature test point is a connector temperature test point (408).

7. The module power supply welding device according to claim 6, characterized in that: When the temperature of the heating control module is set at 150°C, the six temperature test points are at 128 - 132°C, and the surface temperature of the connector is 120°C at this time.

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