CN217445152U - Compact high-voltage wire harness switching structure for oil-cooled motor - Google Patents
Compact high-voltage wire harness switching structure for oil-cooled motor Download PDFInfo
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- CN217445152U CN217445152U CN202221024586.1U CN202221024586U CN217445152U CN 217445152 U CN217445152 U CN 217445152U CN 202221024586 U CN202221024586 U CN 202221024586U CN 217445152 U CN217445152 U CN 217445152U
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Abstract
The utility model discloses an oil is compact high-pressure pencil switching structure for cold motor, including the switching copper bar, the switching copper bar sets up on the casing behind the motor, still is equipped with high-pressure pencil and motor stator on the casing behind the motor, and motor stator passes through the switching copper bar with high-pressure pencil to be connected, is equipped with sealing device behind switching copper bar and the motor between the casing. The utility model provides an oil is compact high pressure pencil switching structure for cold motor has simple structure, sealed effectual advantage such as.
Description
Technical Field
The utility model belongs to the technical field of the switching structure and specifically relates to a compact high pressure pencil switching structure is used to oil-cooled motor is related to.
Background
The oil-cooled motor can take away heat in time due to the fact that cooling oil is directly contacted with the motor stator, and efficiency is high. However, cooling oil is in the motor, and meanwhile, due to the special structure of the pore space of the high-voltage wire harness, switching must be achieved in the sealed three-phase wire connection joint cavity, otherwise, the cooling oil in the motor leaks into the three-phase wire connection joint cavity and then easily permeates into the motor controller through the high-voltage wire harness switching structure and the high-voltage wire harness, and electrical components in the motor controller are damaged, so that a compact high-voltage wire harness switching structure for the oil-cooled motor is urgently needed to be developed, and the problem that the oil resistance and the sealing performance of the high-voltage wire harness switching structure are poor is solved.
Chinese patent application publication No. CN211456888U, published as 09/08/2020/entitled "three-phase connection structure of integrated electric drive system", discloses a three-phase connection structure of an integrated electric drive system, which includes a motor three-phase wire harness, U-phase, V-phase, W-phase copper bars, three-phase switching copper bars, and a plastic cover plate; the three-phase switching copper bar is located the motor, and plastics apron fixed mounting is on the motor, and three riveting nut stretches into three spacing downthehole respectively, and spacing seat passes the pilot hole and stretches into in the machine controller casing, and three bolts pass the connecting hole of U looks, V looks, W looks copper bar respectively and stretch into corresponding three spacing downthehole and three riveting nut spiro union. The maintenance and the disassembly are convenient and the reliability is high. However, the device is complicated in structure, particularly the structure of the plastic pressure plate, and the manufacturing cost is high. Moreover, the structure only satisfies the sealing between the shell of the controller shell and the outside atmosphere, but cannot satisfy the sealing between the cooling oil inside the motor and the controller.
Disclosure of Invention
The utility model discloses an overcome the poor problem of high voltage harness switching structure oil resistance and leakproofness among the prior art, provide a compact high voltage harness switching structure for oil-cooled motor, have simple structure, sealed effectual advantage.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an oil is compact high pressure pencil switching structure for cold motor, includes the switching copper bar, the switching copper bar setting still is equipped with high-pressure pencil and motor stator on the casing behind the motor, and motor stator passes through the switching copper bar with high-pressure pencil to be connected, is equipped with sealing device behind switching copper bar and the motor between the casing.
Among the above-mentioned technical scheme, utilize switching copper bar to connect motor stator and high-pressure pencil, utilize sealing device reinforcing switching copper bar and motor rear shell's leakproofness simultaneously to simple structure has realized the switching function and has strengthened sealed effect.
As preferred, still include the motor procapsid, the motor procapsid sets up casing top behind the motor and cooperation motor rear shell compresses tightly the switching copper bar, sealing device is switching copper bar sealing member, and this sealing member is the rubber spare, is equipped with radial seal lips and axial seal lips on the switching copper bar sealing member, and the motor procapsid compresses tightly the switching copper bar with the casing cooperation behind the motor, and the structure is whole more stable, realizes radial and axial double-deck sealedly under the cooperation of motor procapsid and radial seal lips and axial seal lips simultaneously, has effectively avoided the inside coolant oil of motor to pass through the passageway between casing and the switching copper bar behind the motor and the risk of leaking, has saved the step of paining sealed glue simultaneously, has shortened man-hour of installation.
As preferred, the switching copper bar includes U looks copper bar, V looks copper bar and W looks copper bar, and the both ends of above-mentioned U looks copper bar, V looks copper bar and W looks copper bar all are equipped with one and press the rivet nut, press the rivet nut for the hexagonal is pressed the rivet nut, when guaranteeing to screw up moment, can also shorten the man-hour of installation that switching copper bar and motor stator and high-voltage wire harness are connected, make and connect simplyr.
Preferably, the U-phase copper bar, the V-phase copper bar and the W-phase copper bar are bent at multiple angles and are arranged in a pairwise stacked manner, so that the structure is compact, and the layout space of the switching copper bars is reduced.
As preferred, the switching copper bar still includes outside plastic colloid, U looks copper bar, V looks copper bar and W looks copper bar set up on outside plastic colloid, and the structure of outside plastic colloid has been simplified to the multi-angle of U looks copper bar, V looks copper bar and W looks copper bar is buckled, two liang of range upon range of overall arrangements, and the weight of switching copper bar is alleviateed through plastic material's outside plastic colloid under the effectual prerequisite of guaranteeing to insulate, has practiced thrift the cost of switching copper bar.
Preferably, the switching copper bar is further provided with a glue pouring port, the glue pouring port comprises three pouring process holes, a gap is formed between the copper bar and the plastic colloid due to the defect of different shrinkage rates of the copper bar and the plastic colloid under the high and low temperature impact environment (-40 ℃ to +150 ℃), cooling oil inside the motor can seep out through the gap between the copper bar and the plastic colloid, the problem of cooling oil leakage is caused, the pouring port is filled with pouring glue with oil resistance, high and low temperature resistance, strong elasticity after solidification, and good affinity with the copper bar and the plastic colloid, the defect of different shrinkage rates of the copper bar and the plastic colloid is compensated by the elastic shrinkage of the pouring glue, and the problem can be solved.
Preferably, the rear shell of the motor comprises a three-phase line connection chamber, the high-voltage wiring harness is arranged in the three-phase line connection chamber, the switching copper bar and the high-voltage wiring harness are connected in the three-phase line connection chamber, and the high-voltage wiring harness and the switching copper bar are arranged in the three-phase line connection chamber, so that the overall structure is improved, and the motor is more stable.
Preferably, a three-phase line terminal box cover plate is further arranged on the outer side of the rear shell of the motor, a 0-shaped sealing ring is arranged at the joint of the three-phase line terminal box cover plate and the rear shell of the motor, and the three-phase line terminal cavity of the rear shell of the sealed motor can meet the requirement of IP 67.
The utility model has the advantages that: (1) by using a multi-angle bending process and a transverse laminated layout for the U-phase copper bar, the V-phase copper bar and the W-phase copper bar, the layout space is saved while the switching function is ensured, the volume of a three-phase line wiring junction cavity is reduced, and the miniaturization of the whole motor is promoted; (2) the riveting nuts are arranged at the two ends of the U-phase copper bar, the V-phase copper bar and the W-phase copper bar, so that the connection process of the U-phase copper bar, the V-phase copper bar and the W-phase copper bar with the motor stator and the high-voltage wire harness is simple and reliable, and the installation working time is saved; (3) the specially developed switching copper bar sealing element has the advantages that the special radial sealing double lips and the axial sealing double lips ensure the sealing reliability, and the problems of sealing failure and cooling oil leakage of the switching copper bar and the rear shell of the motor, which are generally worried by the industry in severe environment, are solved; (4) the encapsulation process is introduced, so that the problems that a gap is generated due to different shrinkage rates between the gold copper bar and the injection molding colloid in a high-low temperature impact environment, and cooling oil in the motor seeps into a three-phase wire connection cavity of a rear shell of the motor through the gap between the copper bar and the injection molding colloid are solved; (5) the weight of the switching copper bar is reduced on the premise that the insulation effect is guaranteed by the external plastic colloid made of plastics.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a sectional view of the internal structure of the present invention;
fig. 3 is a schematic view of the structure of the switching copper bar of the present invention;
FIG. 4 is a schematic structural view of the switching copper bar of the present invention without the external plastic colloid;
fig. 5 is a sectional view of the structure of the switching copper bar sealing element of the present invention;
fig. 6 is a partially enlarged view of fig. 5 according to the present invention.
In the figure: the motor front shell 1, the motor stator 2, the motor rear shell 3, the three-phase wire connection chamber 301, the switching copper bar 4, the U-phase copper bar 401, the V-phase copper bar 402, the W-phase copper bar 403, the external plastic colloid 404, the stainless steel threaded insert 405, the first filling and sealing process hole 406, the second filling and sealing process hole 407, the third filling and sealing process hole 408, the screw 5, the switching copper bar sealing piece 6, the radial sealing double lip 601, the axial sealing double lip 602, the high-voltage wiring harness 7 and the three-phase wire connection box cover plate 8.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1 and fig. 1, a compact high-voltage wiring harness switching structure for an oil-cooled motor includes a motor front housing 1, a motor stator 2, a motor rear housing 3, a three-phase wire connection joint cavity 301, a switching copper bar 4, a U-phase copper bar 401, a V-phase copper bar 402, a W-phase copper bar 403, an external plastic colloid 404, a stainless steel threaded insert 405, a first potting process hole 406, a second potting process hole 407, a third potting process hole 408, a screw 5, a switching copper bar sealing member 6, a radial sealing double lip 601, an axial sealing double lip 602, a high-voltage wiring harness 7, and a three-phase wire connection box cover plate 8;
the switching copper bar 4, the high-voltage wire harness 7 and the motor stator 2 are arranged on the rear shell 3 of the motor, the motor stator 2 is connected with the high-voltage wire harness 7 through the switching copper bar 4, a sealing device is arranged between the switching copper bar 4 and the rear shell 3 of the motor, the front shell 1 of the motor is arranged above the rear shell 3 of the motor and is matched with the rear shell 3 of the motor to tightly press the switching copper bar 4, the sealing device is a sealing element 6 of the switching copper bar, the sealing element is a rubber element, a radial sealing double lip 601 and an axial sealing double lip 602 are arranged on the sealing element 6 of the switching copper bar, the switching copper bar 4 comprises a U-phase copper bar 401, a V-phase copper bar 402 and a W-phase copper bar 403, the U-phase copper bar 401, the V-phase copper bar 402 and the W-phase copper bar have multi-angle bending and are arranged in a pairwise stacking mode, the switching copper bar 4 further comprises an external plastic colloid 404, and the U-phase copper bar 401, the V-phase copper bar 402 and the W-phase copper bar 403 are arranged on the external plastic colloid 404, still be equipped with the encapsulating mouth on switching copper bar 4, the encapsulating mouth includes three embedment fabrication hole, be first embedment fabrication hole 406, second embedment fabrication hole 407 and third embedment fabrication hole 408 respectively, casing 3 includes three-phase line wiring closes chamber 301 behind the motor, high-voltage wire harness 7 sets up in three-phase line wiring closes chamber 301, switching copper bar 4 closes intracavity 301 with high-voltage wire harness 7 at three-phase line wiring, the 3 outsides of casing still are equipped with three-phase line terminal box apron 8 behind the motor, still be equipped with threaded insert 405 on switching copper bar 4.
Among the above-mentioned technical scheme, utilize switching copper bar 4 to connect motor stator 2 and high- voltage wire harness 7, 3 cooperations of casing compress tightly switching copper bar 4 behind motor procapsid 1 and the motor, the structure is whole more stable, realize radial and axial double-deck sealedly under the cooperation of motor procapsid 1 and radial seal lips 601 and axial seal lips 602 simultaneously, effectively avoided the inside cooling oil of motor to leak the risk in three-phase line connection closes chamber 301 through the passageway between motor rear housing 1 and the switching copper bar 4, the step of scribbling sealed glue has been saved simultaneously, the man-hour of installation has been shortened. The pressure riveting nut is hexagonal pressure riveting nut, when guaranteeing to screw up moment, can also shorten the man-hour of installation that switching copper bar 4 is connected with motor stator 2 and high-pressure pencil 7, makes to connect simpler. U looks copper bar 401, V looks copper bar 402 and W looks copper bar 403 possess the multi-angle and buckle and two liang of range upon range of overall arrangement, make switching copper bar 4 compact structure, have reduced switching copper bar 4's overall arrangement space, have also simplified the structure of outside plastic colloid 404, and the weight of switching copper bar is alleviateed through plastic material's outside plastic colloid 404 under guaranteeing insulating effectual prerequisite, has practiced thrift switching copper bar 4's cost. Due to the defect of different shrinkage rates of the copper bar and the plastic colloid, a gap is generated under the high and low temperature impact environment (-40 ℃ to +150 ℃), cooling oil inside the motor can seep into the three-phase wire connection joint cavity 301 through the gap between the copper bar and the injection colloid, the problem of cooling oil leakage is caused, the pouring sealant is filled into the sealant pouring port to be resistant to oil and high and low temperatures, the elasticity is strong after solidification, and meanwhile, the pouring sealant has good affinity with the copper bar and the plastic colloid, and the defect of different shrinkage rates of the copper bar and the plastic colloid can be made up by using the elastic shrinkage of the pouring sealant. High-voltage wire harness 7 and switching copper bar 4 set up in three-phase line wiring closes chamber 301, have perfected overall structure, and are more stable. The junction of the three-phase wire terminal box cover plate 8 and the motor rear shell 3 is provided with a 0-shaped sealing ring, and the three-phase wire terminal cavity of the sealed motor rear shell can meet the requirement of IP 67. Further, under the condition that the general structure of the switching copper bar 4 is kept unchanged, the lengths of the U-phase copper bar 401, the V-phase copper bar 402 and the W-phase copper bar 403 are extended, the switching copper bar 4 can be directly connected with a motor controller, a high-voltage wire harness 7 is omitted, and the overall structure is simpler. The screw 5 is used for fixing the motor rear shell 3 and the motor stator 2. The threaded insert 405 may be configured to protect the threaded hole of the copper bar.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221024586.1U CN217445152U (en) | 2022-04-25 | 2022-04-25 | Compact high-voltage wire harness switching structure for oil-cooled motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221024586.1U CN217445152U (en) | 2022-04-25 | 2022-04-25 | Compact high-voltage wire harness switching structure for oil-cooled motor |
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| CN217445152U true CN217445152U (en) | 2022-09-16 |
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| CN202221024586.1U Active CN217445152U (en) | 2022-04-25 | 2022-04-25 | Compact high-voltage wire harness switching structure for oil-cooled motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116470668A (en) * | 2023-03-29 | 2023-07-21 | 浙江凌昇动力科技有限公司 | Stator potting assembly, driving motor and molding method of stator potting assembly |
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2022
- 2022-04-25 CN CN202221024586.1U patent/CN217445152U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116470668A (en) * | 2023-03-29 | 2023-07-21 | 浙江凌昇动力科技有限公司 | Stator potting assembly, driving motor and molding method of stator potting assembly |
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