CN112577844A - Cold and hot impact test method for electromagnetic coil of automobile motor - Google Patents
Cold and hot impact test method for electromagnetic coil of automobile motor Download PDFInfo
- Publication number
- CN112577844A CN112577844A CN202011443740.4A CN202011443740A CN112577844A CN 112577844 A CN112577844 A CN 112577844A CN 202011443740 A CN202011443740 A CN 202011443740A CN 112577844 A CN112577844 A CN 112577844A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic coil
- cold
- box body
- winding
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009863 impact test Methods 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 61
- 238000012360 testing method Methods 0.000 claims abstract description 46
- 230000015556 catabolic process Effects 0.000 claims abstract description 29
- 238000007598 dipping method Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 238000010998 test method Methods 0.000 claims description 11
- 239000002966 varnish Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims 9
- 238000007493 shaping process Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract 1
- 238000011056 performance test Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 7
- 239000003973 paint Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 210000003298 dental enamel Anatomy 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000896 Manganin Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004534 enameling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/60—Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
Abstract
The invention discloses a cold and hot impact test method for an electromagnetic coil of an automobile motor, which belongs to the technical field of cold and hot impact performance test, and is characterized in that after winding, dipping and drying and shaping are carried out on an electromagnetic wire sample of the electromagnetic coil to be produced, a plurality of cold and hot small cycle tests are carried out after the cold and hot small cycle tests, the breakdown voltage of the electromagnetic coil is detected through the breakdown voltage test, and whether the performance of the electromagnetic coil meets the requirement is judged through the range of the breakdown voltage.
Description
Technical Field
The invention relates to the technical field of cold and hot impact performance testing, in particular to a cold and hot impact testing method for an electromagnetic coil of an automobile motor.
Background
The wire enamel is an insulating paint film formed by coating the wire enamel on the surface of copper, aluminum, manganin and other metals and curing the wire enamel at high temperature by an enameling machine. The coated enameled wire realizes the conversion of 'electric' and 'magnetic' energy in the running process of the motor, and the coated insulating paint film has better thermal, electric, mechanical and chemical properties. With the continuous updating and upgrading of electrical equipment, the performance requirements of the electrical equipment on the enameled wire are more and more strict, so that the requirements on the technical level of the enameled wire paint are higher.
Under the national policy background of energy conservation and emission reduction and vigorous development of new energy, electric vehicles are widely popularized. The electric automobile driving system is the most critical subsystem of the electric automobile, the motor is the heart of the driving system, at present, along with the increase of the usage amount of various electric vehicles, strict requirements are put forward on the use safety and reliability of the electric vehicles, but in practical use, it is found that the change of environmental factors such as high temperature and low temperature has a serious influence on the operation state of the motor in the operation process of the electric automobile, particularly, the adverse influence on the operation of the motor is brought by the high-temperature difference working environment in a high-latitude cold region, so that certain requirements are also provided for the cold and hot impact performance of an electromagnetic coil in the motor, and the normal operation under the high-temperature difference needs to be ensured.
Therefore, how to detect the cold and hot impact performance of the produced electromagnetic coil before the motor is assembled and ensure the reliability of the work under the high temperature difference working environment is a problem to be solved at present.
Disclosure of Invention
In order to solve the technical problems, the invention provides a cold and hot impact test method for an electromagnetic coil of an automobile motor, which comprises the steps of winding and shaping an electromagnetic wire sample of the electromagnetic coil to be produced, carrying out a plurality of cold and hot large-cycle tests after a plurality of cold and hot small-cycle tests, detecting the breakdown voltage of the electromagnetic coil through a breakdown voltage test, judging whether the performance of the electromagnetic coil meets the requirements or not through the existence of the breakdown voltage, providing a detection standard for the cold and hot impact performance of the electromagnetic coil, and providing guidance for the coating production of the electromagnetic wire in the early stage.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: the cold and hot impact test method for the electromagnetic coil of the automobile motor specifically comprises the following steps:
1) winding an electromagnetic wire sample into an electromagnetic coil, and fastening and fixing the electromagnetic coil along the circumferential direction of the electromagnetic coil by using a wire rope;
2) placing the tightened electromagnetic coil in a container filled with impregnating varnish for dipping for 15-20 min, and hanging the electromagnetic coil for draining the impregnating varnish for 0.5-1 h;
3) baking the electromagnetic coil at the temperature of 120-140 ℃ for 1-2 h, taking out and cooling to room temperature;
4) baking the electromagnetic coil at the temperature of 170-190 ℃ for 19-21 h, then performing multiple cold and hot small cycle tests, completing a cold and hot large cycle test, and then continuing to perform the cold and hot large cycle test for multiple times.
5) And after the cold and hot large-cycle test is finished, performing breakdown voltage test on the electromagnetic coil at room temperature, wherein if the breakdown voltage is generated, the performance requirement is not met.
Further, the winding mould of the electromagnetic wire sample used in the step 1) comprises a winding cylinder, a baffle I and a baffle II, one end of the winding cylinder is integrally formed with the baffle I, the other end of the winding cylinder is detachably connected with the baffle II, and the periphery of the baffle I, the baffle II and the winding cylinder is surrounded to form a winding space of the electromagnetic coil.
Furthermore, a through hole matched with an output shaft of a winding motor is formed in the winding central axis of the winding die and penetrates through the baffle I, the winding cylinder and the baffle II.
Further, the equipment used for the baking and cold-hot small cycle test of the electromagnetic coil in the step 3) and the step 4) is a high-low temperature cold-hot impact tester.
Further, the cold-hot small cycle test in the step 4) is to freeze the electromagnetic coil at a temperature of-50 to-30 ℃ for 8 to 12min, take out the electromagnetic coil, and bake the electromagnetic coil at a temperature of 170 to 190 ℃ for 1 to 2 min.
Further, the cycle number of the cold and hot small cycle test in the step 4) is 24-26, and the cycle number of the cold and hot large cycle test is 3-5.
Further, the equipment used for the breakdown voltage test in the step 5) comprises a voltage tester, a supporting disc and a box body, wherein the box body with an opening at the upper end is arranged in the supporting disc, steel balls fully contacted with the electromagnetic coil are filled in the box body, a positive terminal and a negative terminal are arranged on the voltage tester, the positive terminal is in contact connection with the steel balls in the box body through a wire, and the negative terminal is connected with one end of the electromagnetic coil through a wire.
Furthermore, one side of the box body is provided with a wiring chamber extending outwards, the wiring chamber is communicated with the box body, a metal sheet in contact with the steel balls is fixed in the wiring chamber, and the positive wiring terminal is clamped and connected with the metal sheet through a lead.
Further, the box body is made of transparent plastic materials, and the two ends of the box body are respectively provided with an opening and closing positioning component for guiding steel balls in the box body out of the supporting plate.
Furthermore, the opening and closing positioning part comprises an open slot, metal clamping pieces and insulation plates, the two ends of the box body are respectively provided with the open slot with the upper end open, the two sides of the open slot are respectively fixed with the metal clamping pieces, one end of each metal clamping piece extending into the box body is connected with one insulation plate in a clamping mode, and the steel balls in the box body are blocked by the end parts of the two insulation plates in a contact mode.
The invention has the beneficial effects that:
1. according to the invention, after the electromagnetic wire sample of the electromagnetic coil to be produced is wound, impregnated and dried for shaping, a plurality of cold and hot large-cycle tests are carried out after a plurality of cold and hot small-cycle tests, the breakdown voltage of the electromagnetic coil is detected through the breakdown voltage test, and whether the performance of the electromagnetic coil meets the requirement or not is judged through the range of the breakdown voltage.
2. According to the invention, the through hole of the winding die of the electromagnetic wire sample is arranged on the output shaft of the winding motor, winding is carried out through the rotation of the winding motor, and the baffle II at one end of the winding die is taken down after winding is finished, so that the wound electromagnetic coil can be taken down, the winding efficiency of the electromagnetic coil is high, and the winding is more convenient.
3. The invention designs a breakdown voltage test device which comprises a voltage tester, a support plate and a box body, wherein the box body filled with steel balls is placed in the support plate, an electromagnetic coil for performing a cold-hot cycle impact test is embedded in the steel balls to enable the steel balls to be in full contact with the electromagnetic coil, a positive terminal of the voltage tester is in contact connection with the steel balls through a lead, a negative terminal of the voltage tester is connected with one end of the electromagnetic coil through the lead, if a paint film of the electromagnetic coil is damaged, a test loop formed by the electromagnetic coil, the steel balls and the voltage tester is conducted, test breakdown voltage is generated instantly, and the breakdown voltage test is performed through a medium with smaller resistance, namely the steel balls, so that the breakdown voltage test is more sensitive and accurate.
In conclusion, the test method is simple to operate, whether the performance of the electromagnetic coil meets the requirements or not is judged through the existence of breakdown voltage after multiple times of cold and hot cycle impact tests, the detection efficiency and the detection precision are high, the detection standard is provided for the cold and hot impact performance of the electromagnetic coil, and guidance is provided for the coating production of the electromagnetic wire in the early stage.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic structural view of a winding mold according to the present invention;
FIG. 2 is a schematic structural diagram of a breakdown voltage testing apparatus according to the present invention;
FIG. 3 is a top view of one configuration of the open-close positioning feature in the cartridge body of the support tray of FIG. 2;
FIG. 4 is a top view of an alternative configuration of the open-close positioning feature in the cassette of the support tray of FIG. 2;
the labels in the above figures are: 1. the device comprises a winding die, 11 winding cylinders, 12 baffles I and 13, II, 14 through holes, 2 voltage testers, 3 supporting disks, 4 box bodies, 5 steel balls, 6 electromagnetic coils, 7 electric wiring chambers, 8 metal sheets, 9 opening and closing positioning parts, 91 open grooves, 92 metal clamping sheets and 93 insulating plates.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific implementation scheme of the invention is as follows: a cold and hot impact test method for an electromagnetic coil of an automobile motor comprises the following steps:
1) an electromagnetic coil 6 is formed by winding an electromagnetic wire sample through a winding die 1, and is fastened and fixed along the circumferential direction of the electromagnetic coil 6 by using a wire rope, as shown in figure 1, the winding mold 1 comprises a winding cylinder 11, a baffle I12 and a baffle II 13, one end of the winding cylinder 11 and the baffle I12 are integrally formed, the other end of the winding cylinder 11 and the baffle II 13 are detachably connected through bolts and butterfly nuts, the baffle I12, the baffle II 13 and the periphery of the winding cylinder 11 enclose a winding space for winding the electromagnetic coil 6, a through hole 14 matched with an output shaft of a winding motor is arranged at the position of the winding central axis of the winding mold 1, the through hole 14 penetrates through the baffle I12, the winding cylinder 11 and the baffle II 13, the through hole 14 can be set to be a threaded hole, and an output shaft of the winding motor is connected with the screw rod through the coupler and is connected with the through hole 14 through the screw rod. The specific use method of the winding mold 1 comprises the steps that after the baffle II 13 is installed and fastened at the other end of the winding cylinder 11, the whole winding mold 1 is connected to an output shaft of a winding motor through a screw rod, an electromagnetic wire sample is wound in a winding space formed by the baffle I12, the baffle II 13 and the winding cylinder 11 through rotation of the winding motor, after winding is completed, the winding motor is stopped, the winding mold 1 is detached from the screw rod, then the baffle II 13 is detached from one end of the winding cylinder 11, and a wound electromagnetic coil is separated from one end, far away from the baffle I12, of the winding cylinder 11;
2) placing the tightened electromagnetic coil 6 in a container filled with impregnating varnish for dipping for 15-20 min, and then hanging the electromagnetic coil 6 for draining the impregnating varnish for 0.5-1 h;
3) baking the electromagnetic coil 6 in a high-low temperature cold-hot impact testing machine at the temperature of 120-140 ℃ for 1-2 h, taking out and cooling to room temperature, and volatilizing a solvent in impregnating varnish attached to the electromagnetic coil 6 to enable each coil of the electromagnetic coil 6 to be tightly connected;
4) baking the electromagnetic coil 6 in a high-low temperature cold and hot impact testing machine at the temperature of 170-190 ℃ for 19-21 h, further volatilizing a solvent in impregnating varnish attached to the electromagnetic coil 6, improving the structural stability of the electromagnetic coil 6, and then performing 24-26 times of cold and hot small cycle tests, namely, freezing the electromagnetic coil 6 at the temperature of-50 to-30 ℃ for 8-12 min, taking out, then placing the electromagnetic coil at the temperature of 170-190 ℃ for baking for 1-2 min, completing one cold and hot large cycle test, and then continuing to perform 3-5 times of cold and hot large cycle tests.
5) After the cold and hot large-cycle test is finished, breakdown voltage test is carried out on the electromagnetic coil 6 at room temperature, if the breakdown voltage is generated, the breakdown voltage does not meet the performance requirement, as shown in figure 2, the equipment used for carrying out the breakdown voltage test comprises a voltage tester 2, a supporting disk 3 and a box body 4, the box body 4 with an opening at the upper end is arranged in the supporting disk 3, steel balls 5 fully contacted with the electromagnetic coil 6 are filled in the box body 4, a positive terminal and a negative terminal are arranged on the voltage tester 2, the positive terminal is contacted and connected with the steel balls 5 in the box body 4 through a lead, the negative terminal is connected with one end of the electromagnetic coil 6 through a lead, if a paint film of the electromagnetic coil 6 is damaged, a test loop consisting of the electromagnetic coil 6, the steel balls 5 and the voltage tester 2 is conducted, the test breakdown voltage is instantly generated, and the breakdown voltage, the breakdown voltage test is more sensitive and more accurate.
Specifically, as shown in fig. 3 and 4, an electrical connection chamber 7 extending outward is disposed on one side of the box body 4, the electrical connection chamber 7 is communicated with the box body 4, a metal sheet 8 contacting with the steel ball 5 is fixed in the electrical connection chamber 7, and the positive terminal is connected with the metal sheet 8 through a lead in a clamping manner, so that the electrical connection between the positive terminal and the steel ball 5 is more convenient. The box body 4 is made of transparent plastic material, the filling condition of the steel ball 5 in the box body 4 can be seen, the steel ball 5 is fully contacted with the electromagnetic coil 6, the two ends of the box body 4 are respectively provided with an opening and closing positioning component 9 guiding the steel ball 5 in the box body 4 into the supporting plate 3, the opening and closing positioning component 9 comprises an opening groove 91, a metal clamping sheet 92 and an insulating plate 93, the two ends of the box body 4 are respectively provided with an opening groove 91 with an opening at the upper end, the two sides of the opening groove 91 are respectively fixed with the metal clamping sheet 92, the structure of the metal clamping sheet 92 can be provided with two types, one structure is that, as shown in figure 3, one end of the metal clamping sheet 92 is fixedly connected with one side of the opening groove 91, the included angle between the other end of the metal clamping sheet 92 and the plane where the opening groove 91 is located is an acute angle, one end, the ends of the two insulating plates 93 are in contact, and the included angle between the ends is an acute angle, so that the steel balls 5 in the box body 4 are blocked; in another structure, as shown in fig. 4, the metal clip sheet 92 is a flat plate, one end of the metal clip sheet 92 is fixedly connected to one side of the open slot 91, the other end of the metal clip sheet 92 is provided with a bayonet, and the insulating plate 93 is slidably engaged between the bayonets of the two metal clip sheets 92. When the steel balls 5 in the box body 4 are too many, the insulating plate 93 is directly taken down from the metal clamping sheet 92, the steel balls 5 are stirred by the insulating plate 93 and led out from the open slot 91 to the supporting plate 3, and the test error caused by the fact that hands contact the steel balls 5 is prevented.
In conclusion, the test method is simple to operate, whether the performance of the electromagnetic coil meets the requirements or not is judged through the existence of breakdown voltage after multiple times of cold and hot cycle impact tests, the detection efficiency and the detection precision are high, the detection standard is provided for the cold and hot impact performance of the electromagnetic coil, and guidance is provided for the coating production of the electromagnetic wire in the early stage.
While the foregoing is directed to the principles of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. A cold and hot impact test method for an electromagnetic coil of an automobile motor is characterized by comprising the following steps:
1) winding an electromagnetic wire sample into an electromagnetic coil (6), and fastening and fixing the electromagnetic coil (6) along the circumferential direction of the electromagnetic coil by using a wire rope;
2) placing the tightened electromagnetic coil (6) in a container filled with impregnating varnish for dipping for 15-20 min, and then hanging the electromagnetic coil (6) for draining the impregnating varnish for 0.5-1 h;
3) baking the electromagnetic coil (6) at the temperature of 120-140 ℃ for 1-2 h, taking out and cooling to room temperature;
4) baking the electromagnetic coil (6) at the temperature of 170-190 ℃ for 19-21 h, then performing multiple cold and hot small cycle tests, completing a cold and hot large cycle test, and then continuing to perform the cold and hot large cycle test for multiple times.
5) After the cold and hot large-cycle test is finished, the breakdown voltage test is carried out on the electromagnetic coil (6) at room temperature, and if the breakdown voltage is generated, the performance requirement is not met.
2. The cold-heat shock test method for the electromagnetic coil of the automobile motor according to claim 1, characterized in that: the winding mould (1) of the electromagnetic wire line pattern used in the step 1) comprises a winding cylinder (11), a baffle I (12) and a baffle II (13), one end of the winding cylinder (11) is integrally formed with the baffle I (12), the other end of the winding cylinder (11) is detachably connected with the baffle II (13), and the peripheries of the baffle I (12), the baffle II (13) and the winding cylinder (11) are wound to form a winding space of the electromagnetic coil (6).
3. The cold-heat shock test method for the electromagnetic coil of the automobile motor according to claim 2, characterized in that: a through hole (14) matched with an output shaft of a winding motor is formed in the winding central axis of the winding die (1), and the through hole (14) penetrates through the baffle I (12), the winding cylinder (11) and the baffle II (13).
4. The cold-heat shock test method for the electromagnetic coil of the automobile motor according to claim 1, characterized in that: the equipment used for baking the electromagnetic coil (6) and performing the cold-hot small cycle test in the steps 3) and 4) is a high-low temperature cold-hot impact tester.
5. The cold-heat shock test method for the electromagnetic coil of the automobile motor according to claim 1, characterized in that: the cold and hot small-cycle test in the step 4) is specifically that the electromagnetic coil (6) is frozen at the temperature of-50 to-30 ℃ for 8-12 min and then taken out, and then is baked at the temperature of 170-190 ℃ for 1-2 min.
6. The cold-heat shock test method for the electromagnetic coil of the automobile motor according to claim 5, characterized in that: the cycle number of the cold and hot small cycle test in the step 4) is 24-26, and the cycle number of the cold and hot large cycle test is 3-5.
7. The cold-heat shock test method for the electromagnetic coil of the automobile motor according to claim 1, characterized in that: the equipment used for breakdown voltage testing in the step 5) comprises a voltage tester (2), a supporting disc (3) and a box body (4), wherein the box body (4) with an upper end opening is arranged in the supporting disc (3), steel balls (5) which are in full contact with the electromagnetic coil (6) are filled in the box body (4), a positive terminal and a negative terminal are arranged on the voltage tester (2), the positive terminal is in contact connection with the steel balls (5) in the box body (4) through a wire, and the negative terminal is connected with one end of the electromagnetic coil (6) through a wire.
8. The cold-heat shock test method for the electromagnetic coil of the automobile motor according to claim 7, characterized in that: an electric wiring chamber (7) extending outwards is arranged on one side of the box body (4), the electric wiring chamber (7) is communicated with the box body (4), a metal sheet (8) in contact with the steel balls (5) is fixed in the electric wiring chamber (7), and the positive wiring terminal is connected with the metal sheet (8) in a clamping mode through a conducting wire.
9. The cold-heat shock test method for the electromagnetic coil of the automobile motor according to claim 7, characterized in that: the box body (4) is made of transparent plastic materials, and the two ends of the box body (4) are respectively provided with an opening and closing positioning component (9) which guides the steel balls (5) in the box body (4) into the supporting disk (3).
10. The cold-heat shock test method for the electromagnetic coil of the automobile motor according to claim 9, characterized in that: the opening and closing positioning component (9) comprises an open slot (91), metal clamping pieces (92) and insulating plates (93), the two ends of the box body (4) are respectively provided with the open slot (91) with an opening at the upper end, the two sides of the open slot (91) are respectively fixed with the metal clamping pieces (92), each metal clamping piece (92) extends into one end of the box body (4) and one of the insulating plates (93) in a clamping mode, and the end of each insulating plate (93) is contacted with steel balls (5) in the box body (4) to stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011443740.4A CN112577844A (en) | 2020-12-08 | 2020-12-08 | Cold and hot impact test method for electromagnetic coil of automobile motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011443740.4A CN112577844A (en) | 2020-12-08 | 2020-12-08 | Cold and hot impact test method for electromagnetic coil of automobile motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112577844A true CN112577844A (en) | 2021-03-30 |
Family
ID=75130729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011443740.4A Pending CN112577844A (en) | 2020-12-08 | 2020-12-08 | Cold and hot impact test method for electromagnetic coil of automobile motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112577844A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470158A (en) * | 2007-12-24 | 2009-07-01 | 天津市华之阳特种线缆有限公司 | Group-type voltage-withstanding test method |
| CN103744003A (en) * | 2013-12-23 | 2014-04-23 | 广东威奇电工材料有限公司 | Automatic enamelled wire continues detection apparatus and method for detecting breakdown voltage of enamelled wire |
| KR20160104273A (en) * | 2015-02-26 | 2016-09-05 | 엘에스전선 주식회사 | Apparatus for voltage withstand test |
| CN206766762U (en) * | 2017-05-24 | 2017-12-19 | 中国人民解放军第四军医大学 | A kind of medicinal box of quantitative drug |
| CN207752881U (en) * | 2018-01-30 | 2018-08-21 | 武汉征原电气有限公司 | A kind of wire winding tool of pot type magnetic core air core coil |
-
2020
- 2020-12-08 CN CN202011443740.4A patent/CN112577844A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470158A (en) * | 2007-12-24 | 2009-07-01 | 天津市华之阳特种线缆有限公司 | Group-type voltage-withstanding test method |
| CN103744003A (en) * | 2013-12-23 | 2014-04-23 | 广东威奇电工材料有限公司 | Automatic enamelled wire continues detection apparatus and method for detecting breakdown voltage of enamelled wire |
| KR20160104273A (en) * | 2015-02-26 | 2016-09-05 | 엘에스전선 주식회사 | Apparatus for voltage withstand test |
| CN206766762U (en) * | 2017-05-24 | 2017-12-19 | 中国人民解放军第四军医大学 | A kind of medicinal box of quantitative drug |
| CN207752881U (en) * | 2018-01-30 | 2018-08-21 | 武汉征原电气有限公司 | A kind of wire winding tool of pot type magnetic core air core coil |
Non-Patent Citations (1)
| Title |
|---|
| 高云霞等: "环保绝缘漆在内燃机车牵引电动机上的应用", 电机技术, no. 3, pages 202 - 203 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109950018B (en) | Supporting framework for adjusting turn-to-turn resistance of uninsulated superconducting magnet and using method | |
| CN106908727A (en) | The method for precisely detecting lithium ion battery self discharge | |
| CN109596993B (en) | Method for detecting charge state of lithium ion battery | |
| CN102759690A (en) | Method for judging insulation aging degrees of alternating current (AC) cables | |
| CN111025152B (en) | Method for testing voltage withstanding performance of lithium ion battery | |
| CN112577844A (en) | Cold and hot impact test method for electromagnetic coil of automobile motor | |
| CN109887656A (en) | The polyester enamelled wire and its production method that can directly weld | |
| CN108614151A (en) | A kind of measurement method of vehicle motor controller efficiency, apparatus and system | |
| CN109269967B (en) | Method for testing corrosion of lithium ion battery shell | |
| CN108663149A (en) | The internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives | |
| CN113965027A (en) | Manufacturing process of motor | |
| CN111077451B (en) | Lithium ion battery voltage withstanding test method | |
| CN216209743U (en) | Testing device of battery pack | |
| CN107946657A (en) | The assemble method of lithium battery electric core module | |
| CN217561124U (en) | Rapid detection device for flexibility of insulated wire | |
| CN217574114U (en) | Curing device for polyimide nano composite film production | |
| CN216718267U (en) | Heat-resisting tester | |
| CN111257801B (en) | Equivalent checking method and equivalent predicting method for current-carrying life of pulse fuse operated at repetition frequency | |
| CN220064271U (en) | Test equipment and withstand voltage test jig thereof | |
| CN104714159A (en) | Aging testing method for dry type transformer insulation materials | |
| CN219204154U (en) | 32-channel square battery charging and discharging clamp integrated machine equipment | |
| CN209247960U (en) | A kind of device testing apparatus | |
| CN220509071U (en) | Breakdown voltage slide rail type tool | |
| CN112782064B (en) | Device for detecting durability of lithium ion battery cell | |
| CN217605907U (en) | High-voltage detection device of charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |