Temperature control contact device for EOL test

Abstract

The utility model discloses a temperature control contact device used for an EOL test. The temperature control contact device comprises a driving mechanism, two contact electrodes and two cables. A temperature sensor is mounted on the contact electrode and is electrically connected to an external EOL testing device; the driving mechanism is in transmission connection with the two contact electrodes and is used for driving the two contact electrodes to move towards each other or move away from each other, so that the contact electrodes and the temperature sensor are in contact with or away from the to-be-detected object; one end of the cable is electrically connected with the contact electrode, and the other end is connected with the EOL testing device. According to the utility model, the temperature of the to-be-tested object can be detected in real time and fed back to the EOL testing device in real time, the high-temperature damage of the to-be-tested object and equipment and other safety accidents can be effectively avoided through the temperature feedback, the EOL testing is ensured to be carried out safely, and the EOL testing device can also be suitable for the to-be-tested objects with various sizes and shapes, and is suitable for popularization and application. And the method has extremely high universality and flexibility.

Description

Technical Field

[0001] This utility model relates to the field of EOL testing technology, and in particular to a temperature-controlled contact device for EOL testing. Background Technology

[0002] In the manufacturing process of electronic products, end-of-line testing (EOL testing) is a critical step in ensuring product quality and performance. However, during testing, the temperature of the device under test (DUT) often gradually rises due to the heat generated by the current passing through it. High temperatures can adversely affect the DUT, including but not limited to accelerated component aging, performance degradation, and even direct damage. Furthermore, excessively high temperatures can also cause safety accidents such as short circuits and fires, posing a threat to testing equipment and operators. Therefore, effectively monitoring and controlling the temperature of the DUT to prevent overheating has become a pressing issue in EOL testing.

[0003] Traditional EOL (Exhaust-Induced) testing methods often lack real-time monitoring mechanisms for the temperature of the test object. Even when monitoring is present, delays or inaccurate control often fail to effectively prevent high-temperature damage and safety accidents. This results in a high damage rate of the test object during EOL testing, compromising testing efficiency and safety. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing contact devices that cannot detect temperature in real time, and to provide a temperature-controlled contact device for EOL testing.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a temperature-controlled contact device for EOL testing, comprising: a drive mechanism, two contact electrodes, and two cables; a temperature sensor is mounted on each contact electrode and electrically connected to an external EOL testing device; the drive mechanism is driven to the two contact electrodes and is used to drive the two contact electrodes to move towards each other or away from each other, so that the contact electrodes and the temperature sensor contact or move away from the test object; one end of each cable is electrically connected to the contact electrode and the other end is connected to the EOL testing device.

[0007] In one embodiment, the two contact electrodes are symmetrically arranged, and each contact electrode includes an electrode portion, a drive connection portion, and a cable connection portion; the electrode portion and the cable connection portion are respectively connected to the two ends of the drive connection portion, the temperature sensor is mounted on the electrode portion, the cable connection portion is connected to the cable, and the drive connection portion is also drively connected to the drive mechanism.

[0008] In one embodiment, the electrode portion has a first mounting cavity, and the temperature sensor is mounted in the first mounting cavity.

[0009] In one embodiment, the inner side of the electrode portion is provided with a contact surface, the temperature sensor is provided with a contact end, and the contact end is flush with the contact surface.

[0010] In one embodiment, the temperature sensor is connected to the EOL testing device via a wire.

[0011] In one embodiment, the first mounting cavity includes a sensor mounting slot and a wire mounting slot, the sensor mounting slot being connected to the wire mounting slot, the shape of the sensor mounting slot being set according to the shape of the temperature sensor, and the wire being set along the wire mounting slot.

[0012] In one embodiment, a first insulating protective shell is provided on the outer side of the electrode portion, and the first insulating protective shell covers the first mounting cavity.

[0013] In one embodiment, the first insulating protective shell extends into the first mounting cavity with a positioning portion.

[0014] In one embodiment, both the electrode portion and the cable connection portion are perpendicularly connected to the drive connection portion, so that the contact electrode is Z-shaped.

[0015] In one embodiment, the electrode portion, the cable connection portion, and the drive connection portion are integrally formed.

[0016] The temperature-controlled contact device for EOL testing disclosed in this invention offers several advantages over existing technologies. By installing a temperature sensor on the contact electrode and electrically connecting it to an external EOL testing device, the device can detect the temperature of the test object in real time and provide real-time feedback. This allows the EOL testing device to control whether to continue supplying power to the contact electrode based on the real-time temperature of the test object, effectively preventing high-temperature damage and other safety accidents. This effectively protects the integrity of the test object and ensures the safe conduct of the EOL test. Furthermore, this invention utilizes a drive mechanism to drive the two contact electrodes, enabling them to move towards or away from each other. This allows the temperature-controlled contact device to be applied to test objects of various sizes and shapes, improving its versatility and flexibility.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the temperature control contact device for EOL testing provided by this utility model;

[0020] Figure 2 An exploded view of the temperature control contact device for EOL testing provided by this utility model;

[0021] Figure 3 An exploded view of the contact electrode provided by this utility model;

[0022] Figure 4 A schematic diagram of the structure of the temperature sensor provided by this utility model;

[0023] Figure 5 A side view of the contact electrode provided by this utility model;

[0024] Figure 6 A schematic diagram of the structure of the first insulating protective shell provided by this utility model. Attached Figure Description

[0026] 1. Drive mechanism; 11. Fixing plate; 2. Contact electrode; 21. Electrode part; 211. First mounting cavity; 2111. Sensor mounting groove; 2112. Wire mounting groove; 212. Contact layer; 22. Drive connection part; 221. Second mounting cavity; 23. Cable connection part; 231. Cable contact surface; 3. Cable; 4. Temperature sensor; 41. Contact end; 5. First insulating protective shell; 51. Positioning part; 6. Second insulating protective shell; 61. Upper insulating protective layer; 611. Vertical groove; 62. Lower insulating protective layer; 7. Mounting base; 71. First through hole; 8. Flexible connection assembly; 81. Equal height bolt; 82. Elastic sleeve. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0034] See Figures 1 to 6 As shown, this utility model discloses a specific embodiment of a temperature-controlled contact device for EOL testing, including: a drive mechanism 1, two contact electrodes 2, and two cables 3; a temperature sensor 4 is installed on the contact electrode 2, and the temperature sensor 4 is electrically connected to an external EOL testing device; the drive mechanism 1 is driven to the two contact electrodes 2, and is used to drive the two contact electrodes 2 to move towards each other or away from each other, so that the contact electrodes 2 and the temperature sensor 4 contact or move away from the test object; one end of the cable 3 is electrically connected to the contact electrode 2, and the other end is connected to the EOL testing device.

[0035] Specifically, the temperature sensor 4 is in direct contact with the surface of the object under test, enabling it to accurately and promptly acquire the surface temperature of the object. During the test, the contact electrode 2 and the temperature sensor 4 are in contact with the object under test, forming a temperature feedback loop between the object under test, the temperature sensor 4, and the EOL testing device. The object under test, the contact electrode 2, the cable 3, and the EOL testing device form a test loop. When the temperature sensor 4 detects that the surface temperature of the object under test reaches or exceeds a preset temperature threshold (e.g., 90°C) and transmits the temperature signal to the EOL testing device, the EOL testing device stops supplying power to the contact electrode 2 through the cable 3 to prevent the temperature of the object under test from continuing to rise, thereby avoiding damage to the object under test or other safety accidents caused by excessive temperature. Furthermore, by driving the two contact electrodes 2 to move in opposite directions or back to back through the drive mechanism 1, it is possible to easily clamp and release the test objects of different sizes and shapes. The operation is simple, which improves the flexibility and versatility of the contact device. Moreover, the clamping contact structure makes the contact between the contact electrodes 2 and the temperature sensor 4 and the test object more stable, so that the temperature feedback loop and test loop formed during the test will not have poor contact, which further improves the safety of EOL testing, and also improves the accuracy and reliability of EOL testing.

[0036] In one specific embodiment, two contact electrodes 2 are symmetrically arranged. Each contact electrode 2 includes an electrode portion 21, a drive connection portion 22, and a cable connection portion 23. The electrode portion 21 and the cable connection portion 23 are respectively connected to the two ends of the drive connection portion 22. The temperature sensor 4 is installed on the electrode portion 21, the cable connection portion 23 is connected to the cable 3, and the drive connection portion 22 is also connected to the drive mechanism 1.

[0037] Specifically, both the electrode portion 21 and the cable connection portion 23 are perpendicularly connected to the drive connection portion 22, making the contact electrode 2 Z-shaped. This allows the contact electrode 2 to maintain its functionality while achieving a more stable structure and a more compact layout, saving space and making it suitable for testing in confined spaces. Furthermore, since the temperature sensor 4 is mounted on the electrode portion 21, it can more accurately contact the surface of the object under test, thereby obtaining more precise temperature data and improving the reliability and accuracy of EOL testing. More specifically, the electrode portion 21, the cable connection portion 23, and the drive connection portion 22 are integrally molded, making the structural strength and conductivity of the contact electrode 2 more stable.

[0038] In one specific embodiment, the electrode portion 21 has a plate-like structure.

[0039] More specifically, the electrode portion 21 has a thickness of 5 mm, allowing it to extend into confined spaces and test the object under test within such spaces, ensuring both sufficient mechanical strength and testing accuracy. It is understood that in other embodiments, the thickness of the electrode portion 21 can be set to other parameters according to the user's requirements.

[0040] In one specific embodiment, the electrode part 21 is provided with a first mounting cavity 211, and the temperature sensor 4 is mounted in the first mounting cavity 211.

[0041] Specifically, by providing a first mounting cavity 211 within the electrode section 21, the installation and removal of the temperature sensor 4 becomes more convenient, and the structure of the contact electrode 2 becomes more compact, reducing the structure exposed on the contact electrode 2. This helps to improve the reliability and stability of the contact electrode 2. Furthermore, the first mounting cavity 211 provides a protected environment for the temperature sensor 4, effectively preventing direct interference and damage to the temperature sensor 4 from the external environment (such as the pressure between the contact electrode 2 and the object to be measured). This results in more accurate temperature monitoring by the temperature sensor 4 and extends the service life of the temperature sensor 4.

[0042] In one specific embodiment, the electrode portion 21 has a contact layer 212 on the side close to the object to be tested, and the temperature sensor 4 has a contact end 41, which is flush with the contact layer 212.

[0043] Specifically, by making the contact end 41 flush with the contact layer 212, when the driving mechanism 1 drives the contact electrode 2 to clamp the object under test, both the contact layer 212 and the contact end 41 are in close contact with the surface of the object under test, so that the contact electrode 2 and the temperature sensor 4 can stably contact the object under test. This prevents poor contact in the temperature feedback loop and test loop formed during the test, further improving the safety of EOL testing, as well as the accuracy and reliability of EOL testing.

[0044] In one specific embodiment, the temperature sensor 4 is connected to the EOL testing device via a wire (not shown in the figure).

[0045] Specifically, by connecting the temperature sensor 4 and the EOL testing device with wires, the temperature sensor 4 and the contact electrode 2 can be effectively electrically isolated, avoiding mutual interference between the temperature sensor 4 and the contact electrode 2 that could lead to testing errors, thereby improving the accuracy and stability of the measurement.

[0046] More specifically, temperature sensor 4 is a temperature IC, which can respond more accurately to temperature changes of the object being measured, and can effectively filter out noise and interference, thereby enhancing the accuracy and stability of the measurement.

[0047] In one specific embodiment, the first mounting cavity 211 includes a sensor mounting groove 2111 and a wire mounting groove 2112. The sensor mounting groove 2111 is connected to the wire mounting groove 2112. The shape of the sensor mounting groove 2111 is set according to the shape of the temperature sensor 4. The wire is set along the wire mounting groove 2112.

[0048] Specifically, the first mounting cavity 211 is located on the opposite side of the contact layer 212 on the electrode part 21. By setting the shape of the sensor mounting groove 2111 according to the shape of the temperature sensor 4, it is ensured that the temperature sensor 4 can be accurately aligned and fixed in the sensor mounting groove 2111 during installation, thereby avoiding misalignment or shaking during the installation process and improving the accuracy and stability of the installation. At the same time, the interconnection between the sensor mounting groove 2111 and the wire mounting groove 2112 makes the installation of the temperature sensor 4 and the arrangement of the wires more orderly and compact, which helps to avoid the mess and tangling of the wires, thereby reducing test failures or errors caused by wire problems.

[0049] In one specific embodiment, the electrode portion 21 is connected to a first insulating protective shell 5 on the side away from the object to be tested, and the first insulating protective shell 5 covers the first mounting cavity 211.

[0050] Specifically, all outer surfaces of the electrode portion 21, except for the contact layer 212, are covered by the first insulating protective shell 5. The first insulating protective shell 5 electrically isolates the electrode portion 21, the temperature sensor 4 within the first mounting cavity 211, and the wires from the external environment, preventing current from flowing to the outside and thus avoiding safety hazards such as electrical short circuits or electric shocks. Furthermore, the first insulating protective shell 5 effectively protects the temperature sensor 4, wires, and other components within the first mounting cavity 211 from damage by the external environment. It also provides additional support and protection for the electrode portion 21 and the first mounting cavity 211, thereby improving the structural strength of the electrode portion 21 and making it more robust and durable.

[0051] In one specific embodiment, the first insulating protective shell 5 extends into the first mounting cavity 211 and has a positioning part 51.

[0052] Specifically, the positioning part 51 is fitted into the first mounting cavity 211 and abuts against the temperature sensor 4, so that the first insulating protective shell 5 can be accurately installed on the first mounting cavity 211. This can effectively prevent the first insulating protective shell 5 and the wires and temperature sensor 4 in the first mounting cavity 211 from being misaligned or shaking, thereby ensuring the structural stability and reliability of the first insulating protective shell 5 and the wires and temperature sensor 4 in the first mounting cavity 211.

[0053] In one specific embodiment, the drive connection part 22 is further provided with a second mounting cavity 221 on the side away from the drive mechanism 1, and the second mounting cavity 221 is connected to the wire mounting groove 2112, and the wire is installed along the inner side of the second mounting cavity 221 and the wire mounting groove 2112.

[0054] Specifically, by installing the wires along the inner side of the second mounting cavity 221 and the wire mounting groove 2112, the arrangement of the wires is more orderly and compact, which helps to avoid the confusion and tangling of the wires, thereby reducing test failures or errors caused by wire problems. At the same time, it also avoids the wires affecting the movement of the contact fingers driven by the drive mechanism 1, thereby ensuring the normal drive of the contact fingers by the drive mechanism 1, making the structure of the contact device more compact and stable.

[0055] In one specific embodiment, a second insulating protective shell 6 is also connected to the outer periphery of the drive connection portion 22.

[0056] Specifically, the second insulating protective shell 6 includes an upper insulating protective layer 61. The upper insulating protective layer 61 has a vertical groove 611, in which the drive connection part 22 and the cable connection part 23 are installed, so that the end of the drive connection part 22 close to the drive mechanism 1 and the front and rear sides, as well as the front and rear sides of the cable connection part 23, are covered by the upper insulating protective layer 61. The upper insulating protective layer 61 is also connected to the drive connection part 22 and the drive mechanism 1. Through this design, the drive connection part 22 and the cable connection part 23 are electrically isolated from the outside world, effectively preventing current from accidentally leaking to the external environment or adjacent components through these components, thereby reducing electrical safety risks such as electric shock and short circuits. It also ensures that the drive mechanism 1 will not cause abnormal operation or malfunction due to electrical interference during operation, improving the stability and reliability of the entire contact device. At the same time, it can also prevent the drive connection part 22 and the cable connection part 23 from being subjected to physical damage such as impact and wear from external objects, extending the service life of these components. In addition, the design of the vertical groove 611 allows the drive connection part 22 and the cable connection part 23 to be easily installed in the upper insulating protective layer 61, and the upper insulating protective layer 61 is directly connected to the drive mechanism 1, which simplifies the installation process, improves installation efficiency, makes the structure more compact and stable, reduces space occupation, and is conducive to achieving efficient drive function in a limited space.

[0057] More specifically, the second insulating protective shell 6 also includes a lower insulating protective layer 62, which connects to and covers the ends of the drive connection portion 22 and the cable connection portion 23 near the electrode portion 21, i.e., the lower insulating protective layer 62 covers the second mounting cavity 221. The design of the lower insulating protective layer 62 effectively covers the ends of the drive connection portion 22 and the cable connection portion 23 near the electrode portion 21, reducing the insulation blind zone on the contact electrode 2 and thus reducing electrical safety risks such as electric shock and short circuits. Furthermore, since the second mounting cavity 221 is also effectively covered, the wires within the second mounting cavity 221 can be stably installed within it, reducing the risk of electrical faults caused by loose or detached wires. Simultaneously, the presence of the lower insulating protective layer 62 also serves as isolation and protection, preventing direct contact between the wires and the external environment, further reducing electrical safety risks.

[0058] In one specific embodiment, the end of the cable connection portion 23 away from the object to be tested is provided with a cable contact surface 231, and the cable 3 is connected to the cable contact surface 231.

[0059] Specifically, cable 3 is fitted onto cable contact surface 231 to ensure a stable connection between cable 3 and contact electrode 2, improving the accuracy and reliability of EOL testing. Furthermore, all surfaces of contact electrode 2, except for cable contact surface 231 and contact layer 212, are electroplated or sprayed with an insulating layer. Combined with the first insulating protective shell 5 and the second insulating protective shell 6, this further reduces electromagnetic interference between contact electrode 2 and other components, maintaining signal stability and accuracy. Simultaneously, it protects contact electrode 2 from environmental factors, reducing maintenance and replacement costs due to corrosion.

[0060] In one specific embodiment, the temperature control contact device for EOL testing further includes a mounting base 7 and a flexible connection component 8, with the drive mechanism 1 connected to the mounting base 7 via the flexible connection component 8.

[0061] Specifically, the flexible connection component 8 allows the drive mechanism 1 to have a certain range of motion on the mounting base 7. This makes it easier for technicians to adjust the position and angle of the drive mechanism 1 during commissioning to ensure optimal contact between the temperature control contact device and the test object, thereby improving the accuracy and reliability of the test and enabling the temperature control contact device to more flexibly adapt to different test requirements and workpiece shapes. At the same time, the flexible connection component 8 can absorb and isolate vibrations from the drive mechanism 1 or the external environment, thereby reducing the impact of these vibrations on the temperature control contact device and the test object. This helps to reduce test errors and improve test stability.

[0062] In one specific embodiment, the flexible connection assembly 8 includes an equal-height bolt 81 and an elastic sleeve 82. The mounting base 7 is provided with a first through hole 71, and the drive mechanism 1 is provided with a second through hole 11. The equal-height bolt 81 extends into the first through hole 71 and the second through hole 11 to connect the mounting base 7 and the drive mechanism 1, and the elastic sleeve 82 is fitted onto the equal-height bolt 81.

[0063] Specifically, the presence of the elastic component 82 creates a small gap between the leveling bolt 81 and the first through hole 71 and the second through hole 11. This allows for a small horizontal displacement between the mounting base 7 and the drive mechanism 1, effectively eliminating horizontal installation and motion accuracy errors. This ensures that the contact electrode 2 maintains good contact with the object under test, improving the accuracy and reliability of the test. Furthermore, a movable gap (not shown in the figure) is also provided between the drive mechanism 1 and the mounting base 7, allowing for a certain amount of vertical movement between them. This effectively disperses stress in the vertical direction, preventing loosening or damage due to vibration or external forces. It is understood that in various embodiments, the elastic component 82 can be a spring, a rubber component, an elastic washer, or other similar components.

[0064] In one specific embodiment, the drive mechanism 1 is a pneumatic gripper.

[0065] Specifically, the gripper fingers of the cylinder chuck are driven to connect to the upper insulating protective layer 61 to achieve the drive connection between the drive mechanism 1 and the drive connection part 22. This arrangement ensures that the drive mechanism 1 can stably control the movement of the contact electrode 2 and accurately control the clamping force between the two contact electrodes 2, while also ensuring the stable transmission of the test signal.

[0066] In one specific embodiment, the contact layer 212 is composed of a plurality of square pyramids (not shown in the figure) arranged in a matrix.

[0067] Specifically, the contact layer 212, formed by a matrix of several quadrangular pyramids, allows the current to be distributed more evenly, reducing current concentration and hot spot effects. This helps to reduce energy consumption, improve current transmission efficiency, and extend the service life of the contact electrode 2. At the same time, due to the increased contact area and optimized structure, the contact resistance between the contact electrode 2 and the object under test is reduced, which helps to improve the sensitivity of signal acquisition, reduce noise interference, and improve the performance of the entire test system.

[0068] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A temperature-controlled contact device for EOL testing, characterized in that, include: The device comprises a drive mechanism, two contact electrodes, and two cables; a temperature sensor is mounted on each contact electrode and is electrically connected to an external EOL testing device; the drive mechanism is connected to the two contact electrodes and is used to drive the two contact electrodes to move towards each other or away from each other, so that the contact electrodes and the temperature sensor contact or move away from the test object. One end of the cable is electrically connected to the contact electrode, and the other end is connected to the EOL testing device.

2. The temperature-controlled contact device for EOL testing according to claim 1, characterized in that, The two contact electrodes are symmetrically arranged, and each contact electrode includes an electrode part, a drive connection part, and a cable connection part; the electrode part and the cable connection part are respectively connected to the two ends of the drive connection part, the temperature sensor is installed on the electrode part, the cable connection part is connected to the cable, and the drive connection part is also drivenly connected to the drive mechanism.

3. The temperature-controlled contact device for EOL testing according to claim 2, characterized in that, The electrode section has a first mounting cavity, and the temperature sensor is mounted in the first mounting cavity.

4. The temperature-controlled contact device for EOL testing according to claim 2, characterized in that, The electrode portion has a contact surface on the side close to the object to be tested, and the temperature sensor has a contact end, which is flush with the contact surface.

5. The temperature-controlled contact device for EOL testing according to claim 3, characterized in that, The temperature sensor is connected to the EOL testing device via a wire.

6. The temperature-controlled contact device for EOL testing according to claim 5, characterized in that, The first mounting cavity includes a sensor mounting slot and a wire mounting slot. The sensor mounting slot is connected to the wire mounting slot. The shape of the sensor mounting slot is set according to the shape of the temperature sensor. The wire is set along the wire mounting slot.

7. The temperature-controlled contact device for EOL testing according to claim 3, characterized in that, The electrode portion is connected to a first insulating protective shell on the side away from the object to be tested, and the first insulating protective shell covers the first mounting cavity.

8. The temperature-controlled contact device for EOL testing according to claim 7, characterized in that, The first insulating protective shell extends into the first mounting cavity and has a positioning part.

9. The temperature-controlled contact device for EOL testing according to claim 2, characterized in that, Both the electrode portion and the cable connection portion are perpendicularly connected to the drive connection portion, so that the contact electrode is Z-shaped.

10. The temperature-controlled contact device for EOL testing according to claim 9, characterized in that, The electrode part, the cable connection part, and the drive connection part are integrally formed.

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