Laser heating module testing machine
Patent Information
- Application Number
- CN202610722904.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-25
- Publication Date
- 2026-09-04
AI Technical Summary
[0005]为了克服现有技术的上述缺陷，本发明的实施例提供激光加热模组测试机器，激光性能测试机无需通过压头下压调整，无接触性热阻误判，无需加热棒/加热片即可在1S内达到8000W或更高功率，加热效率高，产能相比传统提升500%；热阻测试无需使用加热源铜材质NC模拟加热管凸台，激光直接在产品本体加热，规避所有外界隐患，接触性热阻为0；热阻判定无需热电偶感温线探测加热源表面温度，可避免因感温线专业碰焊不足、交叉手持操作带来的温度误判问题；多点测量无需热电偶系统总成控制，成本降低；模拟客户实际测试场景时，无需制作不同加热块，仅需调节系统光斑大小即可适配，无额外成本与管理费用；不存在感温线断线、加热棒断线的批量不良风险，且在热阻测试关键环节中无接触性热阻，GRR表现优秀
[0017] The laser performance testing machine eliminates the need for pressure head adjustment, preventing contact thermal resistance misjudgments. It can reach 8000W or higher power within 1 second without heating rods/heating plates, boasting high heating efficiency and a 500% increase in production capacity compared to traditional methods. Thermal resistance testing eliminates the need for copper NC-simulated heating tube bosses; the laser heats the product directly, avoiding all external hazards and achieving zero contact thermal resistance. Thermal resistance determination eliminates the need for thermocouple sensing wires to detect the heating source surface temperature, avoiding temperature misjudgments caused by insufficient professional welding of sensing wires or cross-hand operation. Multi-point measurement eliminates the need for thermocouple system assembly control, reducing costs. When simulating actual customer testing scenarios, there's no need to manufacture different heating blocks; only the system spot size needs adjustment for adaptation, with no additional costs or management expenses. There is no risk of batch defects due to broken sensing wires or heating rods, and the absence of contact thermal resistance in critical thermal resistance testing stages results in excellent GRR performance.
Smart Images
Figure CN122689873A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of heating module testing, and more specifically, to a testing machine for laser heating modules. Background Technology
[0002] Thermal contact resistance (TCR) refers to the resistance to heat conduction when two solid surfaces are in contact, due to the actual contact area being smaller than the apparent contact area. It is defined as the ratio of the temperature difference (ΔT) between the two contact surfaces to the heat flow (Q). The presence of contact resistance significantly affects heat conduction efficiency, especially in electronic devices and heat dissipation systems. Factors affecting contact resistance include surface morphology and roughness: the greater the surface roughness, the smaller the actual contact area, and the higher the contact resistance. For example, polished metal surfaces can reduce contact resistance by more than 50%. Contact pressure: Increasing contact pressure can force surface micro-protrusions to deform, expanding the contact area and thus reducing contact resistance. Experiments show that when the pressure increases from 0.1 MPa to 1 MPa, the thermal resistance of steel-to-steel contact can be reduced by 40%. Material properties: The thermal conductivity of a material has a significant impact on contact resistance. High thermal conductivity materials (such as copper) generally have lower contact resistance than low thermal conductivity materials (such as ceramics).
[0003] The standard performance testing machine procedure includes: opening the testing software, calling the preset test parameters, and clicking the "Start Test" button on the interface. The software automatically sends the preheating temperature setpoint (e.g., 60°C) to the temperature controller of the heating source. Once the preheating temperature setpoint is reached (and the blue preheating indicator light illuminates), the test start button can be pressed, and the operator waits for the test. When the operator presses the blue start button, the testing software begins testing. At this time, the pressing mechanism activates, and the software sends the starting temperature setpoint (e.g., 70°C) to the temperature controller of the heating source again. The timer on the testing program software interface will change in real time. Once the cooling fan starts under the following conditions (there are three types: time-based start mode, temperature-based start mode, and time & temperature hybrid start mode), the fan will automatically start rotating to meet the preset speed range. The software will automatically send the protection temperature setting (e.g., 100°C) to the temperature controller of the heating source. During the test, if any abnormal phenomena occur, such as a broken temperature sensing wire, a broken heating rod, a fan speed of 0 or exceeding the set range, or a test pressure of 0 or exceeding the set range, the software will automatically make a judgment, display it on the interface, and automatically interrupt and pause the test. When the test time is up, the test for a single product is complete. The software automatically saves the test results to the computer's database. If the test result is NG (Not Good), a flashing red light will indicate it; if the test result is OK, a solid green light will indicate it. If the test software selected the barcode printing function, it will automatically generate 1D and 2D codes and send instructions to the barcode printer to print them out. Then, the tester manually scans the newly printed barcode with a barcode scanner and automatically compares it with the barcode generated by the software. If the comparison results match, pressing the blue start button allows the product testing to continue. At the same time, the software will automatically send the preheating temperature setpoint back to the temperature controller, and the fan will stop running. Otherwise, the program will lock, and the product cannot be tested, indicated by a flashing green light. The test software must be restarted to resume testing. The single test process ends, and the system awaits the next product test. If the software stops testing, it will automatically reset the temperature controller setpoint (SV) to 0 degrees Celsius when the software closes. Test judgment mode selection: One is the temperature difference upper and lower limit judgment mode, and the other is the thermal resistance upper and lower limit judgment mode. Only one of these two modes can be selected; multiple selections are not allowed.
[0004] The disadvantages of ordinary performance testing machines include: contact thermal resistance during the pressure adjustment process of the pressure head; the test heating source cannot reach 8000W or higher power within 1 second, resulting in long heating time and no production capacity; in thermal resistance testing, the flatness / parallelism of the fixed base, the boss, the product, and the pressure head of the copper NC simulated heating tube cannot be 100% non-contact, resulting in contact thermal resistance; the temperature sensing wire itself has thermal resistance during thermal resistance judgment, affecting the test results; multi-point measurement requires control by a thermocouple system assembly, which is costly; different heating blocks need to be manufactured when simulating actual customer test scenarios, which is costly and difficult to manage afterward; there is also a risk of batch defects due to broken temperature sensing wires or heating rods; improper adjustment of the pressure head position / pressure can easily lead to 100% misjudgment, and it is also impossible to effectively detect 100% misjudgment of temperature. Summary of the Invention
[0005] To overcome the aforementioned deficiencies of existing technologies, embodiments of the present invention provide a laser heating module testing machine. This laser performance testing machine eliminates the need for pressure head adjustment, avoids contact thermal resistance misjudgments, and can reach 8000W or higher power within 1 second without a heating rod / heating plate, resulting in high heating efficiency and a 500% increase in production capacity compared to traditional methods. Thermal resistance testing eliminates the need for NC-simulated heating tube bosses made of copper material; the laser heats the product directly, avoiding all external hazards and achieving zero contact thermal resistance. Thermal resistance determination eliminates the need for thermocouple sensing wires to detect the surface temperature of the heating source, avoiding temperature misjudgments caused by insufficient professional welding of sensing wires or cross-handed operation. Multi-point measurement eliminates the need for thermocouple system assembly control, reducing costs. When simulating actual customer testing scenarios, there is no need to manufacture different heating blocks; only the system spot size needs to be adjusted for adaptation, with no additional costs or management expenses. There is no risk of batch defects due to broken sensing wires or heating rods, and there is no contact thermal resistance in the critical thermal resistance testing process, resulting in excellent GRR performance.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a laser heating module testing machine, including a frame;
[0007] The test bench is mounted on the rack.
[0008] At least one test station is set on the test bench for placing the module to be tested;
[0009] A laser is installed inside the frame and located below the test station. The laser is used to emit laser light upwards to heat the module, and the module temperature value and the ambient temperature value are collected by infrared detection.
[0010] A base is installed at the top of the inside of the frame, and a laser is fixedly installed at the top of the base, with the laser located below the test station.
[0011] Furthermore, the outer surface of the test station is equipped with a module for testing.
[0012] Furthermore, the outer surface of the test station is provided with a through slot below the module, and the laser emits a laser beam through the through slot to heat the module.
[0013] Furthermore, positioning fixtures are fixedly installed on the outer surface of the test station around the module.
[0014] Furthermore, a matching fan is installed on the outer surface of the test station at the cooling end of the module.
[0015] Furthermore, casters are movably installed at the four corners of the bottom of the frame.
[0016] The technical effects and advantages of this invention are as follows:
[0017] The laser performance testing machine eliminates the need for pressure head adjustment, preventing contact thermal resistance misjudgments. It can reach 8000W or higher power within 1 second without heating rods / heating plates, boasting high heating efficiency and a 500% increase in production capacity compared to traditional methods. Thermal resistance testing eliminates the need for copper NC-simulated heating tube bosses; the laser heats the product directly, avoiding all external hazards and achieving zero contact thermal resistance. Thermal resistance determination eliminates the need for thermocouple sensing wires to detect the heating source surface temperature, avoiding temperature misjudgments caused by insufficient professional welding of sensing wires or cross-hand operation. Multi-point measurement eliminates the need for thermocouple system assembly control, reducing costs. When simulating actual customer testing scenarios, there's no need to manufacture different heating blocks; only the system spot size needs adjustment for adaptation, with no additional costs or management expenses. There is no risk of batch defects due to broken sensing wires or heating rods, and the absence of contact thermal resistance in critical thermal resistance testing stages results in excellent GRR performance. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.
[0019] Figure 2 This is a schematic diagram of the internal structure of the frame of the present invention.
[0020] Figure 3 This is a schematic diagram of the module test state structure of the present invention.
[0021] Figure 4 This is a schematic diagram of the test station structure of the present invention.
[0022] The attached diagram is labeled as follows: 1. Frame; 11. Casters; 12. Display; 13. Test bench; 2. Test station; 21. Module; 22. Positioning fixture; 3. Base; 31. Laser. Detailed Implementation
[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] according to Figure 1-4 The laser heating module testing machine shown includes a frame 1, a display 12 is fixedly installed on the top outer surface of the frame 1, a test platform 13 is installed at the upper end of the frame 1 in front of the display 12, and six test stations 2 are installed on the outer surface of the test platform 13.
[0025] The base 3 is installed at the top of the inside of the frame 1. A laser 31 is fixedly installed at the top of the base 3, and the laser 31 is located below the test station 2.
[0026] Furthermore, a testing module 21 is installed on the outer surface of the testing station 2.
[0027] Furthermore, the outer surface of the test station 2 is provided with a through groove 23 located below the module 21, and the laser 31 emits a laser through the through groove 23 to heat the module 21.
[0028] Furthermore, a positioning fixture 22 is fixedly installed on the outer surface of the test station 2 around the module 21.
[0029] Furthermore, a matching fan is installed on the outer surface of the test station 2 at the cooling end of the module 21.
[0030] Furthermore, casters 11 are movably installed at the four corners of the bottom end of the frame 1;
[0031] Test station: 6 stations, single heat source, single air cooling;
[0032] Test method: The module under test is placed on the test fixture. The laser directly heats the area to be heated by adjusting the spot size. The cooling end is cooled by a matching fan. The product temperature value and the ambient temperature value are collected by infrared detection. The temperature difference and thermal resistance value are calculated by self-written software using the heat transfer formula. The system automatically determines PASS / FALL and saves the record.
[0033] Material loading and unloading method: manual loading and unloading;
[0034] Test duration: Determined based on product condition and test type; test duration can be set freely.
[0035] Test temperature: room temperature ~ 1000℃;
[0036] Temperature measurement points: Each station is equipped with one laser head; the number of test points is unlimited and controlled by a CCD.
[0037] Temperature sensing wire type: Laser does not require test wires. The laser / temperature sensor acts directly on the product, and even slight changes in the product can determine OK / NG.
[0038] Fan power supply: The fan voltage of each station is independently controlled, and each station is equipped with a fan interface with a power supply voltage specification of 60V, 30A; 11. Fan speed acquisition: The fan speed is automatically recorded in real time by a dedicated speed recorder, and the test value will be automatically written into the database along with the test results. Each station is equipped with a fan wiring interface (FAN1).
[0039] Fan speed control method: The fan speed is controlled by a PWM module. The speed is controlled by setting the PWM duty cycle. Each station is configured with one PWM channel, and a total of 6 PWM channels are configured for 6 stations. The PWM channel of each station is set independently according to the test part number, and the setting range is 0%-100%.
[0040] The computer automatically reads and plots real-time temperature measurement curves, temperatures at various points, temperature differences, thermal resistance values, actual fan speed values, and other information, and automatically saves the raw test data on the computer. It can also export Excel reports based on query conditions.
[0041] The testing system has a segmented heating function, using a high power of 8000W (or more) to quickly heat up, thereby improving testing efficiency;
[0042] The start button is blue, the NG indicator light is red, the OK indicator light is green, and a foolproof function is available for NG test results (the pressing cylinder for NG test results needs to be manually reset).
[0043] Test data can be directly uploaded to the server, but a server-side database interface must be provided;
[0044] Barcode scanning function (barcode scanner provided by customer): Mode 1 is for testing without barcode, and Mode 2 is for scanning the barcode first and then testing. It also has an error prevention function, and the error prevention method can be freely set.
[0045] Working principle of this invention:
[0046] Refer to the instruction manual appendix Figure 1-4
[0047] 1. Open the testing software, load the preset test parameters, and click the "Start Test" button on the interface. The software will automatically send the preheating temperature setting (e.g., 60°C) to the laser's temperature controller. Once the preheating temperature setting is reached, the system will automatically begin the test.
[0048] 2. The timer on the test program software interface will change in real time; once the cooling fan start conditions are met (there are three start conditions: time-based start mode, temperature-based start mode, and a mixed time and temperature start mode), the fan will automatically start rotating to meet the preset speed range. The software will automatically send the protection temperature setpoint (e.g., 100°C) to the laser's temperature controller. This completes the test for a single product.
[0049] 3. The software automatically saves the test results to the computer's database. If the test result is NG (Not Good), a flashing red light will indicate it; if the test result is OK, a solid green light will indicate it. If the testing software selects the barcode printing function, it will automatically generate 1D and 2D barcodes and send instructions to the barcode printer to print them out. Then, the tester manually scans the printed barcode with a barcode scanner and automatically compares it with the barcode generated by the software. If the comparison results match, pressing the blue start button allows the product testing to continue. At the same time, the software will automatically send the preheating temperature setting back to the temperature controller, and the fan will stop running. Otherwise, the program will lock, and the product cannot be tested, indicated by a flashing green light; the testing software must be restarted to resume testing.
[0050] 4. Once a single test cycle is complete, wait for the next product to be tested; If the software stops testing, it will automatically change the laser temperature controller setpoint (SV) to 0 degrees when the software is closed; Test judgment mode selection: One is the temperature difference upper and lower limit judgment mode, and the other is the thermal resistance upper and lower limit judgment mode. Only one of the two can be selected, and they cannot be selected together.
Claims
1. A laser heating module testing machine, characterized in that, include: Rack (1); The test stand (13) is set on the frame (1); At least one test station (2) is set on the test bench (13) for placing the module (21) to be tested. A laser (31) is installed inside the frame (1) and located below the test station (2). The laser (31) is used to emit laser upwards to heat the module (21) and collect the module temperature value and the ambient temperature value through infrared detection.
2. The laser heating module testing machine according to claim 1, characterized in that: It also includes a base (3), which is installed at the top of the inside of the frame (1), and a laser (31) is fixedly installed at the top of the base (3), and the laser (31) is located below the test station (2).
3. The laser heating module testing machine according to claim 1, characterized in that: The outer surface of the test station (2) is equipped with a module (21) for testing.
4. The laser heating module testing machine according to claim 2, characterized in that: The outer surface of the test station (2) is provided with a through groove (23) below the module (21), and the laser (31) emits a laser through the through groove (23) to heat the module (21).
5. The laser heating module testing machine according to claim 2, characterized in that: The outer surface of the test station (2) is fixedly installed with positioning fixtures (22) around the module (21).
6. The laser heating module testing machine according to claim 2, characterized in that: The outer surface of the test station (2) is located at the cooling end of the module (21) and is equipped with a matching fan.
7. The laser heating module testing machine according to claim 1, characterized in that: The frame (1) is equipped with casters (11) at the four corners of its bottom end.
8. The laser heating module testing machine according to claim 1, characterized in that: A display (12) is fixedly mounted on the top outer surface of the rack (1).
9. The laser heating module testing machine according to claim 1, characterized in that: The module under test is placed on the test fixture. The laser directly heats the area to be heated by adjusting the laser spot. The cooling end is cooled by a matching fan. The product temperature value and the ambient temperature value are collected by infrared detection.