Self-adaptive power adjustment output circuit and welding pen handle

Abstract

The utility model relates to the technical field of welding pens, in particular to an adaptive power adjustment output circuit and a welding pen handle, the circuit comprises a plurality of probe points and a plurality of voltage dividing units, the plurality of voltage dividing units comprise a voltage feedback end, a power supply end and a plurality of probe point contact ends, the identification processing module comprises a partial pressure sampling end and a power adjusting end; the probe points are used for making contact with an externally-connected target soldering pen core so as to trigger the corresponding number of the probe points and conduct the corresponding voltage dividing units. Each probe point is connected with the probe point contact end of one voltage dividing unit, the power supply end is connected with an external direct current signal source, and the voltage feedback end is connected with the voltage dividing sampling end, so that the identification processing module outputs corresponding heating power to the target soldering pen core through the power adjusting end according to the number of the conducted voltage dividing units. The method has the beneficial effects that the compatibility of multiple types of soldering refills is realized, and the voltage and the control logic are correspondingly adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of soldering pens, and in particular to an output circuit and a soldering pen handle for adaptive power adjustment. Background Art

[0002] With the continuous development of modern industrial technology, welding technology has become an indispensable part of the manufacturing and maintenance industries. The efficiency and quality of welding operations directly affect the final performance and production cost of the product. In the welding process, the soldering pen core is a key component of the welding equipment, and its performance and service life have an important impact on the welding effect. However, the welding equipment on the market currently generally has the problems of poor soldering pen core compatibility, inability to intelligently identify the soldering pen core model and automatically adjust the voltage and control logic, which to a certain extent limits the flexibility and work efficiency of the welding equipment.

[0003] Therefore, how to achieve compatibility of multiple types of soldering pen cores is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The embodiment of the present application provides an output circuit with adaptive power adjustment, which can achieve compatibility with multiple types of soldering pen refills and achieve the beneficial effects of adjusting voltage and control logic accordingly.

[0005] In a first aspect, the present application provides an output circuit for adaptive power adjustment: an output circuit for adaptive power adjustment, the circuit comprising a detection point module, a voltage division module and an identification processing module;

[0006] The detection point module includes a plurality of detection points, the voltage division module includes a plurality of voltage division units, the plurality of voltage division units include a voltage feedback terminal, a power supply terminal and a plurality of detection point contact terminals corresponding to the number of the detection points, and the identification processing module includes a voltage division sampling terminal and a power adjustment terminal;

[0007] The probe point is used to contact the target welding pen core connected externally, so as to trigger the corresponding number of probe points according to the length of the target welding pen core, and turn on the corresponding voltage dividing unit according to the number of triggered probe points;

[0008] Each of the probe points is connected to a probe point contact end of a voltage divider unit, the power supply end is connected to an external DC signal source, and the voltage feedback end is connected to the voltage divider sampling end, so that the identification processing module outputs the corresponding heating power to the target welding pen core through the power adjustment end according to the number of conductive voltage divider units.

[0009] By adopting the above technical solution, since the length of the target welding refill corresponds to different models, and the heating power required by the target welding refills of different models is different, the number of probe points triggered by the target welding refills of different lengths is different. When the target welding refill is connected, each time the welding refill contacts a probe point, a corresponding voltage divider unit is turned on. The number of voltage divider units turned on affects the voltage division, which is then fed back to the identification and processing module. The identification and processing module determines the power output that matches the sampled voltage, thereby adaptively adjusting the heating power according to the models of different welding refills, achieving compatibility with multiple models of welding refills, and adjusting the voltage and control logic accordingly. Beneficial effect.

[0010] Optionally, the detection point module includes a first detection point, a second detection point, a third detection point and a fourth detection point, and the voltage division module includes a first voltage division unit, a second voltage division unit and a third voltage division unit;

[0011] The first probe point is connected to the ground, the second probe point is connected to one end of the first voltage divider unit, and the other end of the first voltage divider unit is connected to the DC signal source and the voltage divider sampling end;

[0012] The third probe point is connected to one end of the second voltage divider unit, and the other end of the second voltage divider unit is connected to the DC signal source and the voltage divider sampling end;

[0013] The fourth probe point is connected to one end of the third voltage divider unit, and the other end of the third voltage divider unit is connected to the DC signal source and the voltage divider sampling end.

[0014] By adopting the above technical solution, the soldering pen core is conductive to the ground only when it contacts the first probe point, the soldering pen core is connected, and the corresponding power is output accordingly; when the soldering pen core contacts the first probe point and the second probe point, the first voltage divider unit is conductive; when the soldering pen core contacts the first probe point, the second probe point and the third probe point, the first voltage divider unit and the second voltage divider unit are conductive; when the soldering pen core contacts all four probe points, the first, second and third voltage divider units are conductive. According to different results, the voltage sampled by the identification processing module is different.

[0015] Optionally, the circuit further includes a first resistor, one end of the first resistor is connected to a connection point between the voltage divider module and the voltage divider sampling end, and the other end of the first resistor is connected to the DC signal source.

[0016] By adopting the above technical solution, the first resistor performs voltage division to protect the circuit to avoid line short circuit. At the same time, when the soldering pen core only contacts the first probe point, the corresponding sampling voltage is provided to the identification processing module.

[0017] Optionally, the first voltage dividing unit includes a second resistor, the second voltage dividing unit includes a third resistor, and the third voltage dividing unit includes a fourth resistor;

[0018] One end of the fourth resistor is connected to the second probe point, and the other end is connected to the connection between the first resistor and the voltage division sampling end;

[0019] One end of the third resistor is connected to the third probe point, and the other end is connected to the connection between the first resistor and the voltage-dividing sampling end;

[0020] One end of the second resistor is connected to the fourth probe point, and the other end is connected to the connection point between the first resistor and the voltage-dividing sampling end.

[0021] By adopting the above technical solution, the first, second and third voltage-dividing units divide the voltage through resistors. When each unit is turned on, it is equivalent to connecting one or more resistors in parallel, thereby adjusting the sampling voltage of the identification processing module.

[0022] Optionally, the identification processing module includes an analog-to-digital converter and an MCU;

[0023] The analog-to-digital converter is used to obtain a sampling voltage through the voltage-dividing sampling terminal;

[0024] The MCU is used to adjust the heating power output of the target soldering pen core according to the sampled voltage.

[0025] By adopting the above technical solution, the analog-to-digital converter performs sampling to obtain the sampled voltage ADC value. The MCU will report the sampled voltage ADC value to the host. Under the premise that the host has temperature input, the model of the target soldering pen core is determined according to the sampled voltage ADC value, and the corresponding heating power is output for heating.

[0026] Optionally, the first probe point and the ground electrode, the second probe point and the fourth resistor, the third probe point and the third resistor, and the fourth probe point and the second resistor are all connected through PCB traces.

[0027] Optionally, the first detection point, the second detection point, the third detection point and the fourth detection point are all fixed by a PCB.

[0028] A second aspect of the present application provides a soldering pen handle with adaptive power adjustment, which is equipped with the above-mentioned adaptive power adjustment output circuit.

[0029] In summary, the present application includes at least one of the following beneficial effects:

[0030] 1. Improved the compatibility of soldering pen refills, supporting soldering pen refills of different power sizes to meet different welding needs;

[0031] 2. It realizes the automatic identification of welding pen core models, improves the intelligent level of welding equipment, and reduces the difficulty of operation;

[0032] 3. It can automatically adjust the output voltage and control logic according to the welding pen core model information, ensuring that the welding equipment can adapt to the working requirements of different types of welding pen cores, thereby improving the welding quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a module connection diagram of an output circuit for adaptive power adjustment provided in an embodiment of the present application;

[0034] Figure 2 is a circuit schematic diagram of an output circuit for adaptive power adjustment provided in an embodiment of the present application;

[0035] Figure 3 is a circuit diagram of an output circuit of the adaptive power adjustment provided by the present application contacting a probe point;

[0036] Figure 4 It is a circuit diagram of an output circuit of adaptive power adjustment provided by the present application contacting two probe points;

[0037] Figure 5 is a circuit diagram of an output circuit for adaptive power adjustment provided by the present application contacting three probe points;

[0038] Figure 6 It is a circuit diagram of an output circuit for adaptive power adjustment provided by the present application contacting four probe points. DETAILED DESCRIPTION

[0039] The following examples will help those skilled in the art to further understand the effects of the present application, but are not intended to limit the present application in any form. It should be noted that, for those of ordinary skill in the art, several modifications and improvements may be made without departing from the concept of the present application. These all fall within the scope of protection of the present application.

[0040] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0041] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0042] It should also be understood that the term “and / or” used in the specification and appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0043] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0044] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0045] The present application is further described in detail below in conjunction with the accompanying drawings.

[0046] Reference Figure 1 , Figure 1 It is a module connection diagram of an output circuit for adaptive power adjustment provided by an embodiment of the present application, wherein the circuit includes a probe point module 1, a voltage divider module 2 and an identification processing module 3, wherein the probe point module 1 includes a plurality of probe points, the voltage divider module 2 includes a plurality of voltage divider units, the plurality of voltage divider units include a voltage feedback terminal, a power supply terminal and a plurality of probe point contact terminals corresponding to the number of the probe points, the identification processing module 3 includes a voltage divider sampling terminal and a power adjustment terminal, and each module is specifically described below:

[0047] About the probe point module 1: The probe point module 1 includes multiple probe points. For the convenience of explanation, the embodiment of the present application is described with four probe points. In actual use, relevant personnel can adjust the number of probe points according to the needs of the welding pen. However, any compatible welding pen designed with the concept provided by the present application should fall within the protection scope of the present application. Among them, the probe point is used to contact the target welding pen core connected to the outside to trigger the corresponding number of probe points according to the length of the target welding pen core, and to turn on the corresponding voltage divider unit according to the number of probe points triggered. The number of voltage divider units turned on will affect the voltage value of the sampling voltage divider point, and this voltage value can be used to adjust the heating power output. In addition, a variety of probe points such as springs, retaining springs, spring ejectors, contact slides, etc. can be used to contact the welding pen core. In this embodiment, for the convenience of explanation, springs are used as an example.

[0048] Regarding the voltage divider module 2: the voltage divider module 2 includes multiple voltage divider units, each of which is provided with one or more voltage divider devices, each of the probe points is connected to the probe point contact end of a voltage divider unit, and the power supply end is connected to an external DC signal source. In this embodiment, the voltage divider device is a resistor. According to the number of probe points contacted by the soldering pen core, the corresponding voltage divider unit is turned on through the corresponding probe point contact end, thereby adjusting the voltage value of the sampling point.

[0049] Regarding the identification and processing module 3: the identification and processing module 3 includes a voltage-dividing sampling terminal for sampling and a power-adjusting terminal for adjusting the power output. The voltage-dividing sampling terminal is connected to a sampling point arranged on the voltage-dividing module 2. The model of the connected welding pen core is determined according to the sampling voltage collected by the sampling point. The voltage feedback terminal is connected to the voltage-dividing sampling terminal, and is used for the identification and processing module to output the corresponding heating power to the target welding pen core through the power-adjusting terminal according to the number of voltage-dividing units that are turned on. In this embodiment, C030 contacts only one probe point, C080 contacts two probe points, C150 contacts three probe points, and C250 contacts four probe points. The sampling voltages obtained by contacting different numbers of probe points are different. According to the different sampling voltages, the corresponding model of the welding pen core can be determined, thereby correspondingly outputting the required heating power.

[0050] Further, refer to Figure 2 , Figure 2 : This is a circuit schematic diagram of an output circuit for adaptive power adjustment provided in an embodiment of the present application. Combined with the above module description, the internal device connection relationship of multiple modules is specifically described:

[0051] The detection point module includes a first detection point, a second detection point, a third detection point and a fourth detection point, and the voltage division module includes a first voltage division unit, a second voltage division unit and a third voltage division unit;

[0052] The first probe point is connected to the ground, the second probe point is connected to one end of the first voltage divider unit, and the other end of the first voltage divider unit is connected to the DC signal source and the voltage divider sampling end;

[0053] The third probe point is connected to one end of the second voltage divider unit, and the other end of the second voltage divider unit is connected to the DC signal source and the voltage divider sampling end;

[0054] The fourth probe point is connected to one end of the third voltage divider unit, and the other end of the third voltage divider unit is connected to the DC signal source and the voltage divider sampling end;

[0055] The circuit further includes a first resistor R1 , one end of which is connected to the connection between the voltage division module 2 and the voltage division sampling end, and the other end of which is connected to the DC signal source.

[0056] Specifically, for ease of explanation, the first probe point is referred to as probe point 1, the second probe point is probe point 2, the third probe point is probe point 3, and the fourth probe point is probe point 4. When the soldering pen core only contacts the first probe point, it is grounded to form a path, and the external DC signal source is output to the ground through the first resistor R1. At this time, the identification processing module 3 samples the sampling point to obtain the first sampling voltage; when the soldering pen core contacts the probe points 1 and 2, the first voltage divider unit is incorporated into the voltage divider to adjust the sampling point voltage to obtain the second sampling voltage; when the soldering pen core contacts the probe points 1, 2 and 3, the first and second voltage divider units are incorporated into the voltage divider to obtain the third sampling voltage on the sampling point; when the soldering pen core contacts the probe points 1, 2, 3 and 4, the first, second and third voltage divider units are incorporated into the voltage divider to obtain the sampling voltage as the fourth sampling voltage. Generally, the more probe points are contacted, the smaller the sampling voltage value is, and the greater the heating power used.

[0057] More specifically, in this embodiment, a resistor is used as a voltage divider, which is described in detail below:

[0058] The first voltage dividing unit includes a second resistor R2, the second voltage dividing unit includes a third resistor R3, and the third voltage dividing unit includes a fourth resistor R4;

[0059] One end of the fourth resistor R4 is connected to the second probe point, and the other end is connected to the connection between the first resistor R1 and the voltage-dividing sampling end;

[0060] One end of the third resistor R3 is connected to the third probe point, and the other end is connected to the connection point between the first resistor R1 and the voltage-dividing sampling end;

[0061] One end of the second resistor R2 is connected to the fourth probe point, and the other end is connected to the connection point between the first resistor R1 and the voltage-dividing sampling end.

[0062] Specifically, each time the soldering pen core contacts a probe point, it is equivalent to connecting one more signal transmission line and adding one more resistor for voltage division. Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 3 is a circuit diagram of an output circuit of the adaptive power adjustment provided by the present application contacting a probe point, Figure 4 is a circuit diagram of an output circuit of adaptive power adjustment provided by the present application contacting two probe points, Figure 5 is a circuit diagram of an output circuit for adaptive power adjustment provided by the present application contacting three probe points, Figure 6 3. This is a circuit diagram of an output circuit of adaptive power adjustment provided by the present application contacting four probe points. In this embodiment, the external DC signal source is 3.3V, which is compatible with C030, C080, C150 and C250 soldering pen cores. The four soldering pen cores have different lengths and can trigger different numbers of probe points respectively. Among them, C030 only contacts probe point 1, and the sampling voltage is 3.3V. In this case, 30W power is output to heat the soldering pen; C080 contacts probe points 1 and 2, and the sampling voltage is measured to be 0.75x3.3V, in this case, 80W power is output to heat the soldering pen; C150 contacts probe points 1, 2, and 3, and the sampling voltage is measured to be 0.5x3.3V, in this case, 150W power is output to heat the soldering pen; C250 contacts probe points 1, 2, 3, and 4, and the sampling voltage is measured to be 0.25x3.3V, in this case, 250W power is output to heat the soldering pen.

[0063] Further, the sampled voltage is acquired by the identification processing module 3, and the identification acquisition module 3 can also report to the host based on the acquired sampled voltage, so as to achieve adaptive adjustment. In the embodiment of the present application, the identification processing module 3 includes an analog-to-digital converter and an MCU, which are specifically described below:

[0064] The analog-to-digital converter is used to obtain a sampling voltage through the voltage-dividing sampling terminal;

[0065] The MCU is used to adjust the heating power output of the target soldering pen core according to the sampled voltage.

[0066] Specifically, any point at the connection between the first resistor and the voltage divider module 2 is taken as a sampling point for sampling, and the sampled signal is converted into an ADC to obtain the ADC value of the maximum voltage range that can be reached at this point. In this embodiment, the maximum voltage is determined by the DC signal source, that is, 3.3V. According to the achievable range, the corresponding soldering pen core model can be determined, and the corresponding relationship can be preset by relevant personnel before use, or adjusted and determined by the manufacturer. After determining the ADC value, the MCU reports the ADC value to the host. If there is a temperature input signal in the host, the power output for heating the soldering pen is adjusted according to the ADC value.

[0067] More specifically, the temperature input is the host temperature signal. The embodiment of the present application can be applied to the handle, and a thermocouple is provided inside the soldering pen. The thermocouple is a temperature sensor. After the soldering pen is connected to the handle, the thermocouple signal can be transmitted to the main control unit. If the soldering pen is not connected, since the host temperature signal is idle and pulled up, the temperature signal on the host side is maintained at 3.3V; if the soldering pen is connected, the thermocouple signal will be received and amplified by the signal conditioning circuit in the host, and the amplified signal can reflect the actual temperature of the tip of the soldering pen, that is, the temperature input signal.

[0068] Further, the first probe point and the ground electrode, the second probe point and the fourth resistor, the third probe point and the third resistor, and the fourth probe point and the second resistor are all connected through PCB routing, and the first probe point, the second probe point, the third probe point and the fourth probe point are all fixed through PCB.

[0069] Specifically, connecting resistors and probe points through PCB routing can not only improve the performance and reliability of the soldering pen, but also simplify the production process, reduce costs, and facilitate later maintenance and upgrades. Through PCB fixation, multiple probe points can be installed in a stable position or structure to ensure their normal operation and protect the circuit board from external interference or damage, thereby improving reliability.

[0070] A second aspect of the present application provides a soldering pen handle with adaptive power adjustment, which is equipped with the above-mentioned adaptive power adjustment output circuit.

[0071] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An output circuit for adaptive power adjustment, characterized in that: The circuit includes a detection point module, a voltage division module and an identification processing module; The detection point module includes a plurality of detection points, the voltage division module includes a plurality of voltage division units, the plurality of voltage division units include a voltage feedback terminal, a power supply terminal and a plurality of detection point contact terminals corresponding to the number of the detection points, and the identification processing module includes a voltage division sampling terminal and a power adjustment terminal; The probe point is used to contact the target welding pen core connected externally, so as to trigger the corresponding number of probe points according to the length of the target welding pen core, and turn on the corresponding voltage dividing unit according to the number of triggered probe points; Each of the probe points is connected to a probe point contact terminal of a voltage divider unit, and the power supply terminal is connected to an external DC signal source; The voltage feedback terminal is connected to the voltage division sampling terminal, and is used for the identification processing module to output corresponding heating power to the target welding pen core through the power adjustment terminal according to the number of the turned-on voltage division units.

2. The output circuit of adaptive power adjustment according to claim 1, characterized in that: The detection point module includes a first detection point, a second detection point, a third detection point and a fourth detection point, and the voltage division module includes a first voltage division unit, a second voltage division unit and a third voltage division unit; The first probe point is connected to the ground, the second probe point is connected to one end of the first voltage divider unit, and the other end of the first voltage divider unit is connected to the DC signal source and the voltage divider sampling end; The third probe point is connected to one end of the second voltage divider unit, and the other end of the second voltage divider unit is connected to the DC signal source and the voltage divider sampling end; The fourth probe point is connected to one end of the third voltage divider unit, and the other end of the third voltage divider unit is connected to the DC signal source and the voltage divider sampling end.

3. The output circuit for adaptive power adjustment according to claim 2, characterized in that: The circuit further includes a first resistor, one end of which is connected to the connection point between the voltage division module and the voltage division sampling end, and the other end of which is connected to the DC signal source.

4. The output circuit for adaptive power adjustment according to claim 3, characterized in that: The first voltage dividing unit includes a second resistor, the second voltage dividing unit includes a third resistor, and the third voltage dividing unit includes a fourth resistor; One end of the fourth resistor is connected to the second probe point, and the other end is connected to the connection between the first resistor and the voltage division sampling end; One end of the third resistor is connected to the third probe point, and the other end is connected to the connection between the first resistor and the voltage-dividing sampling end; One end of the second resistor is connected to the fourth probe point, and the other end is connected to the connection point between the first resistor and the voltage-dividing sampling end.

5. The output circuit for adaptive power adjustment according to claim 4, characterized in that: The identification processing module includes an analog-to-digital converter and an MCU; The analog-to-digital converter is used to obtain a sampling voltage through the voltage-dividing sampling terminal; The MCU is used to adjust the heating power output of the target soldering pen core according to the sampled voltage.

6. The output circuit for adaptive power adjustment according to claim 4, characterized in that: The first probe point and the ground electrode, the second probe point and the fourth resistor, the third probe point and the third resistor, and the fourth probe point and the second resistor are all connected through PCB traces.

7. The output circuit for adaptive power adjustment according to claim 2, characterized in that: The first probe point, the second probe point, the third probe point and the fourth probe point are all fixed by a PCB.

8. A soldering pen handle with adaptive power adjustment, characterized in that: An output circuit equipped with adaptive power adjustment as described in any one of claims 1-7.

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