CN114460499A - Stability test system and method for aluminum wire riveted connection terminal - Google Patents
Stability test system and method for aluminum wire riveted connection terminal Download PDFInfo
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- CN114460499A CN114460499A CN202210045429.7A CN202210045429A CN114460499A CN 114460499 A CN114460499 A CN 114460499A CN 202210045429 A CN202210045429 A CN 202210045429A CN 114460499 A CN114460499 A CN 114460499A
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- test system
- connecting terminal
- test
- aluminum wire
- assembly
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 46
- 238000013112 stability test Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 93
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 238000010998 test method Methods 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004804 winding Methods 0.000 description 4
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to a motor production test device, and particularly relates to a test system and a test method for testing the stability of a connecting terminal riveted by an aluminum wire; the stability test system for the aluminum wire riveted connecting terminal is characterized in that a power supply is connected with a cable, a control assembly, a load adjusting assembly and a current detection assembly of a connecting terminal to be tested through a connecting wire to form a test loop, a temperature detection assembly is arranged on the connecting terminal to be tested, and deformation and resistance variation at the connecting terminal are tested through circular power-on and power-off; the invention designs a stability test system and a test method of a connecting terminal suitable for aluminum wire riveting, judges whether aluminum wire riveting is reliable or not, and provides reliability support for a new process.
Description
Technical Field
The invention belongs to a motor production testing device, and particularly relates to a testing system and a testing method for testing the stability of an aluminum wire riveted connecting terminal.
Background
In order to reduce the production cost of the motor, more and more manufacturers adopt an enameled aluminum wire as a winding of the motor, when the winding of the motor is connected with an external copper wire, a connecting terminal in mixed connection with the copper wire and the aluminum wire can be arranged, the known copper wire and the known aluminum wire have different resistances and different thermal expansion coefficients, and the problem of reliability of the connecting terminal in mixed connection with the copper wire and the aluminum wire can be solved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention designs a stability test system and a test method suitable for an aluminum wire riveted connecting terminal, the test system can simulate the severe working condition of a motor, the reliability of the aluminum wire riveted connecting terminal is judged according to the detection result by detecting the aluminum wire riveted connecting terminal subjected to the severe working condition, and the reliability support is provided for a new process.
The technical scheme of the invention is as follows:
aluminium wire riveted connecting terminal stability test system, its characterized in that: comprises that
The test power supply is used for supplying power required by the test to the whole test system;
a temperature detection assembly for detecting the temperature at the connection terminal;
a current detection component for detecting the magnitude of the current flowing through the connection terminal; and
the load adjusting component is used for being connected into the test system to adjust the current flowing through the connecting terminal; and
the control assembly is used for controlling the on-off of the test system and receiving the temperature of the temperature detection assembly to control the on-off of the test system;
the testing power supply is connected with a cable, a control assembly, a load adjusting assembly and a current detection assembly of the connecting terminal to be tested through a connecting wire to form a testing loop, and the temperature detection assembly is arranged on the connecting terminal to be tested.
Furthermore, the device also comprises a counting assembly, wherein the counting assembly is connected with the control assembly and is used for counting the on-off times of the test system.
Furthermore, the temperature detection assembly is a thermocouple which is arranged in the connecting terminal and is directly contacted with the cable.
Furthermore, the control assembly comprises a main control switch and a temperature control switch assembly connected with the main control switch in series, the temperature control switch assembly comprises a controllable contact, the controllable contact is connected with the main control switch, and the control assembly further comprises a PLC controller, and the PLC controller receives a temperature signal fed back by the temperature detection assembly so as to control the opening and closing of the controllable contact.
Furthermore, the aluminum wire riveted connecting terminal is a connecting terminal for connecting an enameled aluminum wire and a copper wire.
Furthermore, the removal of the enamel coating of the enamel aluminum wire is at least 25 mm.
The test method of the connection terminal stability test system based on aluminum wire riveting is characterized in that: the method comprises the following steps:
step 1: setting a test current, adjusting the load adjusting component to make the current of the test system running stably be the test current,
step 2: the control component is switched on, the test system starts to work, when the temperature detection component detects that the temperature of the connecting terminal to be tested reaches 160 ℃, the control component cuts off the current of the test system, when the temperature detection component detects that the temperature of the connecting terminal is cooled to room temperature, the control component is switched on, the test system works again, the test cycle is one test cycle, and the cycle number is 5000 times;
and step 3: and after 5000 test cycles are completed, detecting the deformation quantity and the resistance value variable of the connecting terminal, and judging that the connecting terminal is qualified if the deformation quantity and the resistance value variable of the connecting terminal are within +/-7% of the original values.
Further, the test current is 60-70A.
In conclusion, the invention has the following beneficial effects:
the invention designs a test system which can simulate the impact on a motor winding and a cable connecting terminal in the repeated starting process of a motor under a large load, and after a large number of repeated tests, deformation and resistance variables at the connecting terminal are detected, so that the reliability of the connecting terminal riveted by an aluminum wire is verified, and whether the riveting of the enameled aluminum wire and the copper wire meets the production requirement of the motor is further judged.
Drawings
FIG. 1 is a schematic diagram of the test system of the present invention;
FIG. 2 is a schematic diagram of the control unit;
FIG. 3 is a schematic flow chart of a testing method;
in the figure 1 there is shown a test power supply,
2 is a temperature detection component, and the temperature detection component,
3 is a current detection component, and the current detection component,
4 is a load-adjusting component, and the load-adjusting component,
5 is a control component, 50 is a main control switch, 51 is a temperature control switch component, 510 is a controllable contact, and 52 is a PLC controller;
6 is the connecting terminal to be tested, and 7 is the counting assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Referring to fig. 1, aluminium wire riveted connecting terminal stability test system, its characterized in that: comprises that
A test power supply 1, which provides the electricity needed by the test for the whole test system;
a temperature detection assembly 2 for detecting the temperature at the connection terminal;
a current detection component 3 for detecting the magnitude of the current flowing through the connection terminal; and
the load adjusting component 4 is used for being connected into the test system to adjust the current flowing through the connecting terminal; and
the control component 5 is used for controlling the on-off of the test system and receiving the temperature of the temperature detection component to control the on-off of the test system;
the testing power supply 1 is connected with a cable of a connecting terminal 6 to be tested, the control component 5, the load adjusting component 4 and the current detecting component 3 through connecting wires to form a testing loop, and the temperature detecting component 2 is arranged on the connecting terminal to be tested.
The invention designs a system for testing the stability of a connecting terminal riveted by an enameled aluminum wire and a copper wire, wherein a control component controls the connection and the disconnection of a testing loop, after the testing loop is connected, a testing current flows through the connecting terminal to be tested, the connecting terminal to be tested generates heat, the temperature of the connecting terminal to be tested rises, a temperature detection component detects the temperature of the connecting terminal to be tested, when the temperature reaches a set value, a signal is fed back to the control component, the control component cuts off the testing loop, after the temperature of the connecting terminal to be tested is cooled to room temperature, the temperature detection component feeds back a signal to the control component again, the control component controls the connection of the testing loop to be connected again, after multiple times of circulating tests, the height of the terminal at the connecting terminal to be tested and the resistance of a cable connected with the connecting terminal are measured, if the change values of the height and the resistance are within a set range, the connecting terminal riveted by the batch of aluminum wire is judged to be qualified, the stability of the use of the motor obtained by production is ensured.
Further, still include counting assembly 7, counting assembly and control assembly are connected for the number of times of statistics test system break-make, in this embodiment counting assembly be the counter, its control assembly's switch is counted, makes things convenient for people to count the number of times of test, conveniently carries out the experiment of repetitiveness many times more.
Furthermore, the temperature detection assembly 2 is a thermocouple which is arranged in the connecting terminal and is directly contacted with the cable, the thermocouple can be arranged at the position closer to the cable connecting part, the temperature of a real heating area can be obtained, and the interference of the surrounding environment to the temperature detection assembly is reduced.
Referring to fig. 2, the control assembly 5 includes a main control switch 50 and a temperature control switch assembly 51 connected in series with the main control switch, the temperature control switch assembly 51 includes a controllable contact 510, the controllable contact 510 is connected with the main control switch 50, and a PLC controller 52, the PLC controller 52 receives a temperature signal fed back by the temperature detection assembly 2 to control the opening and closing of the controllable contact, the configuration of the control assembly is explained here, the main control switch is used to control the opening and closing of the whole test loop, when the test loop is not required to be used, the main control switch is turned off, when a test is required, the main control switch is turned on first, the controllable contact is controlled by the PLC controller, the PLC controller determines the opening and closing of the controllable contact according to the temperature signal fed back by the temperature detection assembly, when the temperature detection assembly detects that the temperature of the connection terminal is higher than a set upper limit value, the PLC controller controls the controllable contacts to be disconnected, and if the temperature detection assembly detects that the temperature of the connecting terminals reaches the room temperature, the PLC controller controls the controllable contacts to be connected, so that the testing circulation of the connecting terminals is conveniently realized, the automatic control of the testing circulation is realized, and manual intervention is not needed.
Furthermore, the aluminum wire riveted connection terminal 6 is a connection terminal riveted by an enameled aluminum wire and a copper wire, and the test object is limited, and the reliability of the connection position of the aluminum wire and the copper wire needs to be verified because the connection position of the aluminum wire and the copper wire has the possibility of deformation and looseness due to different temperature rise coefficients and different thermal expansion coefficients.
Further say, the enameled layer of enameled aluminum wire get rid of 25mm at least, because the enameled layer has certain thermal-insulated effect, if the enameled layer is got rid of too little, the contact surface undersize of the junction of temperature detect subassembly and copper line and aluminum wire, the temperature of probably unable accurate acquisition connecting terminal department, then probably exert an influence to the experimental result, above-mentioned mode has guaranteed that the temperature detect subassembly is used for the reliability of enameled aluminum wire and copper line and temperature detect subassembly contact, has ensured the reliability of temperature detection.
The following is a test method of the test system according to the present invention.
Referring to fig. 3, the test method of the connection terminal stability test system based on aluminum wire riveting is characterized in that: the method comprises the following steps:
step 1: connecting the connection terminal to be tested into the test loop, setting the test current, and adjusting the load adjusting component to make the current of the test system running stably be the test current,
step 2: the control component is switched on, the test system starts to work, when the temperature detection component detects that the temperature of the connecting terminal to be tested reaches 160 ℃, the control component cuts off the current of the test system, when the temperature detection component detects that the temperature of the connecting terminal is cooled to room temperature, the control component is switched on, the test system works again, the test cycle is one test cycle, and the cycle number is 5000 times;
and step 3: and after 5000 test cycles are completed, detecting the deformation quantity and the resistance value variable of the connecting terminal, and judging that the connecting terminal is qualified if the deformation quantity and the resistance value variable of the connecting terminal are within +/-7% of the original values.
Further, the test current is 60-70A.
Taking 10 samples of a batch of enameled aluminum wires, pressing the samples together with copper wires and connecting terminals to form a sample to be tested, and measuring and recording the height and the resistance value of the connecting terminals of the sample to be tested before testing;
the room temperature for testing is 25 ℃, after 5000 times of cyclic tests, the height and the resistance value of the connecting terminal are measured and recorded after the tests, and the details are shown in the following table:
the analysis of the measurement data in the attached drawings shows that the height and the resistance value of the tested connecting terminal are changed to a certain extent, but the change values are in accordance with the specified range, so that the batch of enameled aluminum wires can be judged to be used for motor production.
In conclusion, the invention has the following beneficial effects:
the invention designs a test system which can simulate the impact on a motor winding and a cable connecting terminal in the repeated starting process of a motor under a large load, and detects the deformation quantity and the resistance value variable at the connecting terminal after a large number of repeated tests so as to verify the reliability of the enameled aluminum wire of the incoming material and further judge whether the enameled aluminum wire meets the production requirement of the motor.
Claims (8)
1. Aluminium wire riveted connecting terminal stability test system, its characterized in that: comprises that
The test power supply is used for supplying power required by the test to the whole test system;
a temperature detection assembly for detecting the temperature at the connection terminal;
a current detection component for detecting the magnitude of the current flowing through the connection terminal; and
the load adjusting component is used for being connected into the test system to adjust the current flowing through the connecting terminal; and
the control assembly is used for controlling the on-off of the test system and receiving the temperature of the temperature detection assembly to control the on-off of the test system;
the testing power supply is connected with a cable, a control assembly, a load adjusting assembly and a current detection assembly of the connecting terminal to be tested through a connecting wire to form a testing loop, and the temperature detection assembly is arranged on the connecting terminal to be tested.
2. An aluminum wire riveted connection terminal stability test system according to claim 1, characterized in that: the counting assembly is connected with the control assembly and used for counting the on-off times of the test system.
3. An aluminum wire riveted connection terminal stability test system according to claim 1, characterized in that: the temperature detection assembly is a thermocouple which is arranged in the connecting terminal and is directly contacted with the cable.
4. An aluminum wire riveted connection terminal stability test system according to claim 1, characterized in that: the control assembly comprises a main control switch and a temperature control switch assembly connected with the main control switch in series, the temperature control switch assembly comprises a controllable contact, the controllable contact is connected with the main control switch, and the control assembly further comprises a PLC controller, and the PLC controller receives a temperature signal fed back by the temperature detection assembly so as to control the opening and closing of the controllable contact.
5. An aluminum wire riveted connection terminal stability test system according to claim 1, characterized in that: the aluminum wire riveted connecting terminal is a connecting terminal for connecting an enameled aluminum wire and a copper wire.
6. An aluminum wire riveted connection terminal stability test system according to claim 5, characterized in that: and the enameled layer of the enameled aluminum wire is removed by at least 25 mm.
7. The test method of the connection terminal stability test system based on aluminum wire riveting is characterized in that: the method comprises the following steps:
step 1: setting a test current, adjusting the load adjusting component to make the current of the test system running stably be the test current,
step 2: the control component is switched on, the test system starts to work, when the temperature detection component detects that the temperature of the connecting terminal to be tested reaches 160 ℃, the control component cuts off the current of the test system, when the temperature detection component detects that the temperature of the connecting terminal is cooled to room temperature, the control component is switched on, the test system works again, the test cycle is one test cycle, and the cycle number is 5000 times;
and step 3: and after 5000 test cycles are completed, detecting the deformation quantity and the resistance value variable of the connecting terminal, and judging that the connecting terminal is qualified if the deformation quantity and the resistance value variable of the connecting terminal are within +/-7% of the original values.
8. The test method of claim 5, wherein: the test current is 60-70A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210045429.7A CN114460499A (en) | 2022-01-15 | 2022-01-15 | Stability test system and method for aluminum wire riveted connection terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210045429.7A CN114460499A (en) | 2022-01-15 | 2022-01-15 | Stability test system and method for aluminum wire riveted connection terminal |
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| CN114460499A true CN114460499A (en) | 2022-05-10 |
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| CN202210045429.7A Pending CN114460499A (en) | 2022-01-15 | 2022-01-15 | Stability test system and method for aluminum wire riveted connection terminal |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU960670A1 (en) * | 1981-02-04 | 1982-09-23 | Всесоюзный Государственный Научно-Исследовательский И Проектный Институт "Вниипроектэлектромонтаж" | Device for evaluating quality of inseparable aluminium contact joints |
| JP2002076071A (en) * | 2000-08-25 | 2002-03-15 | Matsushita Electric Ind Co Ltd | Reliability evaluation method and reliability evaluation equipment of component mounting part |
| JP2007192624A (en) * | 2006-01-18 | 2007-08-02 | Toyota Motor Corp | System and method for inspecting coil |
| CN101995421A (en) * | 2009-08-31 | 2011-03-30 | 雅马哈发动机株式会社 | Detection method and detection device for terminal riveting part of wire |
| CN103262374A (en) * | 2010-12-09 | 2013-08-21 | 矢崎总业株式会社 | Load circuit disconnection detector |
| CN104345270A (en) * | 2014-11-23 | 2015-02-11 | 哈尔滨理工大学 | On-line electric switch contact health state monitoring and early warning system |
| CN106291263A (en) * | 2016-09-29 | 2017-01-04 | 华南理工大学 | A kind of method checking aluminium cable coupling compression joint technique |
-
2022
- 2022-01-15 CN CN202210045429.7A patent/CN114460499A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| SU960670A1 (en) * | 1981-02-04 | 1982-09-23 | Всесоюзный Государственный Научно-Исследовательский И Проектный Институт "Вниипроектэлектромонтаж" | Device for evaluating quality of inseparable aluminium contact joints |
| JP2002076071A (en) * | 2000-08-25 | 2002-03-15 | Matsushita Electric Ind Co Ltd | Reliability evaluation method and reliability evaluation equipment of component mounting part |
| JP2007192624A (en) * | 2006-01-18 | 2007-08-02 | Toyota Motor Corp | System and method for inspecting coil |
| CN101995421A (en) * | 2009-08-31 | 2011-03-30 | 雅马哈发动机株式会社 | Detection method and detection device for terminal riveting part of wire |
| CN103262374A (en) * | 2010-12-09 | 2013-08-21 | 矢崎总业株式会社 | Load circuit disconnection detector |
| CN104345270A (en) * | 2014-11-23 | 2015-02-11 | 哈尔滨理工大学 | On-line electric switch contact health state monitoring and early warning system |
| CN106291263A (en) * | 2016-09-29 | 2017-01-04 | 华南理工大学 | A kind of method checking aluminium cable coupling compression joint technique |
Non-Patent Citations (2)
| Title |
|---|
| 李奎 等: "继电器触头接触可靠性预测方法的研究", 电工技术学报, vol. 14, no. 2, 26 April 1999 (1999-04-26), pages 55 - 59 * |
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