Thermistor Test System

Abstract

The present application discloses a thermistor testing system for testing the thermistor in a plug wire, comprising a heating device and a testing device for testing the resistance value of the thermistor; the heating device comprises a heating component and a heat transfer component in contact with the heating component; a plug hole is provided on the heat transfer component, and the plug pin of the plug wire is inserted into the plug hole. The thermistor testing system of this embodiment can quickly heat the tested plug wire and improve the efficiency of thermistor testing.

Description

Technical Field

[0001] The present disclosure relates to the field of testing technology, and in particular to a thermistor testing system. Background Art

[0002] Most NTC test systems for car charging cables are oven-type. The entire product is placed inside the oven, and the carrier at the end of the oven is connected to the signal line at the end of the car charging cable. The hot air inside the oven raises the temperature of the plug. After the plug is fully heated, the test system records the resistance value of the thermistor. The disadvantage is that the oven-type heating method cannot quickly transfer heat to the inside of the plug, the heating is slow, and the test efficiency is low. Summary of the invention

[0003] In order to solve at least one of the above technical problems, the present disclosure provides a thermistor testing system to improve testing efficiency.

[0004] The present invention discloses a thermistor testing system for testing the thermistor in a plug wire, comprising a heating device and a testing device for testing the resistance value of the thermistor;

[0005] The heating device comprises a heating component and a heat transfer component in contact with the heating component;

[0006] The heat transfer component is provided with an insertion hole, and the plug pin of the plug wire is inserted into the insertion hole.

[0007] Optionally, the heating device comprises a heat-insulating box, and the heating component and the heat transfer component are located in the heat-insulating box;

[0008] The heat insulation box is provided with a through hole corresponding to the plug hole, so that the plug pin of the plug wire passes through the through hole and then is inserted into the plug hole.

[0009] Optionally, the heating device comprises a controller for controlling the heating component, and the controller is located outside the thermal insulation box.

[0010] Optionally, the thermal insulation box includes a heat reflecting plate and a thermal insulation cover plate, the thermal insulation cover plate is located on the opposite side of the heat reflecting plate, and the through hole is located on the thermal insulation cover plate.

[0011] Optionally, the heat transfer component includes a heat transfer tube, the heat transfer tube is provided with an opening for forming the insertion hole, and an elastic ring is sleeved on the opening of the heat transfer tube.

[0012] Optionally, the heat transfer component includes a heat transfer plate, and the heat transfer tube is at least partially disposed in the heat transfer plate.

[0013] Optionally, the heating component is a heating plate, and the heating plate is in close contact with the heat transfer plate.

[0014] Optionally, the heating component is a heating rod, and the heating rod is arranged in the heat transfer plate.

[0015] Optionally, the thermistor testing system includes a tail-end carrier, and the testing device includes a resistance tester;

[0016] The tail end carrier is provided with a signal line connection portion for inserting the tail end signal line of the plug line;

[0017] The resistance tester is connected to the signal line connecting portion.

[0018] Beneficial effects:

[0019] The thermistor testing system of this embodiment can quickly heat the plug wire under test, thereby improving thermistor testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principle of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0021] Figure 1 is a structural schematic diagram of a thermistor testing system according to an embodiment of the present disclosure;

[0022] Figure 2 is a structural schematic diagram of a heating device according to an embodiment of the present disclosure;

[0023] Figure 3 is an exploded view of a heating device according to an embodiment of the present disclosure;

[0024] Figure 4 is a partial cross-sectional view of a heating device according to an embodiment of the present disclosure;

[0025] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0026] Figure 6 is a schematic structural diagram of a heat transfer tube according to an embodiment of the present disclosure;

[0027] Figure 7 is a partial cross-sectional view of another heating device according to an embodiment of the present disclosure;

[0028] Figure 8 It is a structural schematic diagram of a tail-end carrier according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the components related to the present disclosure are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] Embodiment 1:

[0032] See also Figure 1 to Figure 4 , this embodiment discloses a thermistor testing system for testing the thermistor in the plug wire 100, the thermistor testing system comprises a heating device 1 and a testing device 2 for testing the resistance value of the thermistor;

[0033] The heating device 1 comprises a heating component 11 and a heat transfer component 12 in contact with the heating component 11;

[0034] The heat transfer component 12 is provided with an insertion hole 13 for inserting a plug pin of the plug wire 100 .

[0035] The plug cable 100 is a cable with a plug, and specifically, may be a car charging cable or the like.

[0036] When the thermistor testing system of the present embodiment is used to test the thermistor, the plug of the plug wire 100 is inserted into the jack 13 so that the plug contacts the heat transfer component 12, and heat is generated by the heating component 11. The heat transfer component 12 directly transfers the heat generated by the heating component 11 to the plug, and the heat is conducted to the inside of the plug through the plug. When the inside of the plug is heated to the required temperature, the resistance value of the thermistor is tested by the testing device 2 to determine whether the thermistor is qualified.

[0037] The thermistor test system of this embodiment has a faster heating speed than the existing oven-type test system, and can improve the thermistor test efficiency. Among them, it can be known that the plug is also a plug PIN.

[0038] In one embodiment, in order to reduce heat loss and avoid scalding of personnel by the heating device 1, see Figure 1 to Figure 3 The heating device 1 includes a heat-insulating box 14, in which the heating component 11 and the heat transfer component 12 are located; the heat-insulating box 14 is provided with a through hole 15 corresponding to the plug hole 13, so that the plug pin of the plug wire 100 passes through the through hole 15 and then is inserted into the plug hole 13. The heating device includes a controller for controlling the heating component, and the controller is located outside the heat-insulating box.

[0039] Further, in order to achieve better heating effect, see Figure 2 and Figure 3 The heat insulation box 14 includes a heat reflecting plate 141 and a heat insulating cover plate 142, wherein the heat insulating cover plate 142 is located on the opposite side of the heat reflecting plate, and the through hole 15 is located on the heat insulating cover plate 142. Since the heat reflecting plate 141 is arranged on the opposite side of the heat insulating cover plate 142, when the heating device 1 is working, the latch is located in the reflection direction of the heat reflecting plate 141, which can improve the heat transfer efficiency. Among them, the heat reflecting plate 141 in this embodiment can be a stainless steel mirror heat reflecting plate, and the heat reflecting plate 141 reduces radiation and convection.

[0040] For further information, see Figure 2 to Figure 4 The heat-insulating box 14 includes a heat-insulating baffle 143, which is arranged on the four sides of the top, bottom, left and right. The heat-insulating baffle 143, the heat-insulating cover plate 142, and the heat-reflecting plate 141 cooperate to form the isolation box 13; the heat-insulating baffle 143 and the heat-insulating cover plate 142 can be made of fiberglass material, that is, the heat-insulating baffle 143 and the heat-insulating cover plate 142 are respectively a fiberglass heat-insulating baffle and a fiberglass heat-insulating cover plate. The heat-insulating box 14 is composed of a heat-reflecting plate 141 at the rear end, a heat-insulating cover plate 142 at the front end, a heat-insulating baffle 143 on the left side, a heat-insulating baffle 143 on the right side, a heat-insulating baffle 143 at the top, and a heat-insulating baffle 143 at the bottom.

[0041] A connecting plate 144 is provided in the heat insulation box 14. The connecting block 144 may be made of glass fiber and is used to fix the heating component and make the heating component suspended and not in contact with the heat reflection plate 141 at the rear end. The fixing plate 145 may be made of glass fiber and is used to fix the heat insulation box 14 and make the reflection plate 141 not in contact with the chassis, thereby minimizing the heat in the heat insulation box from being transferred to the inside of the chassis to affect the electrical components.

[0042] In one embodiment, see Figure 3 , Figure 5 and Figure 6 The heat transfer component 12 includes a heat transfer tube 121, and the heat transfer tube 121 is provided with an opening for forming the insertion hole 13. The opening of the heat transfer tube 121 is sleeved with an elastic collar 16. Here, the opening cooperates with the hole of the heat transfer tube itself to form a insertion hole for inserting a plug, and cooperates with the elastic collar 16 so that the opening can clamp the plug.

[0043] The heat transfer tube 121 can be a metal tube such as a copper tube or an aluminum tube. Generally, a heat transfer copper tube can be selected as a heat transfer component.

[0044] The elastic ring 16 can tighten the opening of the heat transfer tube 121, so that the inner wall of the heat transfer tube 121 can fully contact with the pin of the heated product, thereby increasing the firmness of the contact between the inner wall of the heat transfer tube 121 and the pin.

[0045] In one embodiment, see Figure 3The heat transfer component 12 includes a heat transfer plate 122 , and the heat transfer tube 121 is at least partially disposed in the heat transfer plate 122 .

[0046] It can be known that all heat transfer tubes 121 here can be arranged on one heat transfer plate 122, that is, one heat transfer plate 122 can transfer heat to multiple heat transfer tubes 121, so that multiple heat transfer tubes 121 transfer heat to the plugs respectively.

[0047] In one embodiment, see Figure 3 The heating component 11 is a heating plate, and the heating plate is in close contact with the heat transfer plate 122. At the same time, in order to ensure the efficiency of the heating plate in transferring heat to the heat transfer plate 122, the contact surface between the heating plate and the heat transfer plate 122 can be as large as possible. The heating plate can be a PTC heating plate. PCT is the abbreviation of Positive Temperature Coefficient. The PTC heating element has the advantages of small thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and power-saving electric heater. Of course, it can be known that the heating plate can also be set inside the heat transfer plate 122 so that the heating plate is in close contact with the inside of the heat transfer plate 122. The heating plate can also be set in other ways.

[0048] In one embodiment, see Figure 7 The heating component 11 is a heating rod, which is arranged in the heat transfer plate so that the heating rod and the heat transfer plate have a larger contact surface to ensure the heat transfer efficiency. Of course, it can be known that the heating rod can also be arranged in other ways.

[0049] In one embodiment, see Figure 1 and Figure 8 , the thermistor test system includes a tail end carrier 3, and the test device 2 includes a thermistor resistance tester;

[0050] The tail end carrier 3 is provided with a signal line connection portion 31 for inserting the tail end signal line of the plug line 100;

[0051] The thermistor resistance tester is connected to the signal line connection portion 31 .

[0052] It can be known that this solution is for a plug cable 100 having a tail signal line, such as a car charging cable, wherein the tail signal line of the plug cable 100 is connected to a thermistor in the plug cable 100; a thermistor resistance tester is an instrument that can test the resistance of a thermistor, such as a MICROTEST8700 tester.

[0053] The tail end carrier 3 is a carrier used to connect the tail end of the plug wire 100, and the thermistor resistance tester is used to connect with the tail end signal wire of the plug wire 100 through the tail end carrier 3; specifically, the tail end signal wire of the plug wire 100 is inserted into the signal wire connecting part 31 of the tail end carrier 3, and the thermistor resistance tester is connected with the tail end signal wire through the signal wire connecting part 31, so that the thermistor resistance test can test the resistance value of the thermistor of the plug wire 100.

[0054] It can be known that part of the function of the heating device 1 is equivalent to a front carrier for inserting the front end pin of the plug wire 100, and the front carrier and the rear end carrier are respectively connected and fixed to the front end and the rear end of the plug wire.

[0055] See also Figure 1 , Figure 3 and Figure 8 The tail end carrier 3 is provided with a tail plug assembly 32 and a neutral / live wire connection part 33. The thermistor test system includes a touch screen device 4 and an indicator light 5; the touch screen device includes a touch screen, a processor and a storage, and the indicator light can be a three-color light.

[0056] When in use, the tail end signal wire connection sleeve and the tail end zero / live wire metal PIN of the plug wire 100 are respectively connected to the corresponding positions of the tail end carrier 3, and the front end zero / live wire plug of the plug wire 100 is inserted into the socket 13 of the heating device 1; at this time, the front and tail end signals are connected, the negative pole of the controller is connected to the heat transfer plate 122, and the zero / live wire metal PIN of the plug wire 100 is connected through the heat transfer copper tube 121 to make the front end of the plug wire in parallel state, and the tail end zero / live wire connection parts 33 are independently connected to the positive pole of the PLC controller, and correspond to the indicator light 5 one by one. The indicator light 5 displays the working status and lights up yellow (waiting for test status), and the touch screen device displays a countdown. When the countdown is zero, the current resistance value is recorded, and it is automatically determined whether the thermistor is qualified. When the thermistor is qualified, the control indicator light is green; when the thermistor is unqualified, the control indicator light is red. The negative pole of the three-color light is connected to the common point, and the three positive poles are connected to the signal output points of the PLC controller respectively. The PLC controller controls the status of the three-color light. The green light is on when the test resistance is within the set range, the red light is on when the resistance is greater than or less than the set range, and the yellow light is on when waiting for the test process.

[0057] In order to keep the temperature of the heat transfer plate at the required set value, a temperature sensing detection component can be set to detect the temperature of the heat transfer plate. The processor is connected to the heating component. The processor serves as a controller of the heating component to control the operation of the heating component according to the temperature of the heat transfer plate detected by the temperature sensing detection component, so that the heating component can heat the heat transfer component to a constant temperature.

[0058] The processor can be connected to the rear-end carrier and the front-end carrier to obtain a signal indicating whether the front and rear ends are connected.

[0059] The processor can be connected to the resistance tester to obtain the test result of the resistance tester. Of course, the processor is also arranged in the resistance tester as a part of the resistance tester.

[0060] See also Figure 1 The thermistor test system also includes a frame 6, on which the test device is arranged. Correspondingly, the heating device and the tail-end carrier are also arranged on the frame; the frame includes two front legs 61, and the tail-end carrier 3 is arranged between the two front legs 61. Each front leg 61 is provided with a plurality of longitudinally arranged slide grooves, and each slide groove 62 is parallel to each other. The tail-end carrier 3 is moved by a screw 63 passing through the slide groove, so that the system can adjust the front-to-back position and the up-and-down position of the tail-end carrier according to the structure of the plug line to be tested.

[0061] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. Thermistor test system is used to test thermistors in plug wires, characterized in that: It includes a heating device and a testing device for testing the resistance value of the thermistor; The heating device comprises a heating component and a heat transfer component in contact with the heating component; The heat transfer component is provided with a plug hole, and the plug pin of the plug wire is inserted into the plug hole; The heating device comprises a heat-insulating box, wherein the heating component and the heat transfer component are located in the heat-insulating box; The heat insulation box is provided with a through hole corresponding to the plug hole, so that the plug pin of the plug wire passes through the through hole and then is inserted into the plug hole; The heat transfer component comprises a heat transfer tube, the heat transfer tube is provided with an opening for forming the insertion hole, and an elastic sleeve is sleeved on the opening of the heat transfer tube.

2. The thermistor testing system according to claim 1, characterized in that: The heating device comprises a controller for controlling a heating component, and the controller is located outside the thermal insulation box.

3. The thermistor testing system according to claim 1, characterized in that: The heat insulation box comprises a heat reflecting plate and a heat insulation cover plate, wherein the heat insulation cover plate is located at the opposite side of the heat reflecting plate, and the through hole is located on the heat insulation cover plate.

4. The thermistor testing system according to claim 1, characterized in that: The heat transfer component comprises a heat transfer plate, and the heat transfer tube is at least partially disposed in the heat transfer plate.

5. The thermistor testing system according to claim 4, characterized in that: The heating component is a heating plate, and the heating plate is in close contact with the heat transfer plate.

6. The thermistor testing system according to claim 4, characterized in that: The heating component is a heating rod, and the heating rod is arranged in the heat transfer plate.

7. The thermistor testing system according to claim 1, characterized in that: The thermistor test system includes a tail-end carrier, and the test device includes a resistance tester; The tail end carrier is provided with a signal line connection portion for inserting the tail end signal line of the plug line; The resistance tester is connected to the signal line connecting portion.

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