CN218006030U

CN218006030U - Motor and vehicle

Info

Publication number: CN218006030U
Application number: CN202221695973.8U
Authority: CN
Inventors: 李景涛; 杨鑫; 赵义; 贾明博; 柯攀
Original assignee: Zhaoqing Xiaopeng Automobile Co Ltd
Current assignee: Zhaoqing Xiaopeng Automobile Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-12-09
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a motor and vehicle, this motor includes the casing, the oil pan, the suction pump and advance oil pipe, the casing is equipped with and holds the chamber, the oil pan is connected in the casing to enclose with the casing and close and form the oil storage chamber, the suction pump is located and is held the intracavity, the suction pump has the oil inlet, advance oil pipe's one end and oil inlet intercommunication, advance oil pipe's the other end and be equipped with the inlet port, inlet port and oil storage chamber intercommunication, wherein, definition perpendicular to motor axial direction is first direction, there is the difference in height in first direction in inlet port and oil inlet. The utility model discloses a setting and the oil pipe that advances that the oil storage chamber is linked together reduce the oil inlet of oil suction pump, effectively reduce whole cost, reduce the system in stir oil loss for the whole drive efficiency of motor increases, improves whole car thermal management efficiency.

Description

Motor and vehicle

Technical Field

The utility model relates to a motor cooling field, in particular to vehicle of motor and applied this motor.

Background

The driving motor of the new energy automobile needs good heat dissipation in continuous operation, otherwise the driving motor is overheated due to low heat dissipation efficiency, the torque and the power output of the motor are affected, the output efficiency of the motor is reduced rapidly, and in an extreme case, the motor may even be burnt out. Therefore, oil cooling heat dissipation is required for the stator and the rotor inside the motor and the combined electric control system and the speed reducer.

In the related technology, the oil cooling scheme of the motor generally adopts the method of increasing the oil adding amount in the motor to cool the motor in a heat dissipation way, and meanwhile, the lubricating of gears and shafts under the limit working condition is met, the oil return is ensured to be smooth and fast, and the oil pump is prevented from sucking air. However, the increase of the oil quantity leads to the increase of the overall cost, and the oil stirring loss in the electric drive system is increased, so that the overall driving efficiency of the motor is reduced, the endurance of the whole vehicle is reduced, and the thermal management efficiency of the whole vehicle is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a motor and vehicle to solve the cold in-process of motor oil, because of the cost-push that the oil mass leads to too much, the electric drive system stirs the oil loss and increases, the problem that drive efficiency reduces.

In order to achieve the above object, the present invention provides a motor, the motor includes:

the shell is internally provided with a containing cavity;

the oil pan is connected to the shell and forms an oil storage cavity with the shell in an enclosing mode;

the oil suction pump is arranged in the containing cavity and is provided with an oil inlet; and

one end of the oil inlet pipe is communicated with the oil inlet, the other end of the oil inlet pipe is provided with an oil suction port, and the oil suction port is communicated with the oil storage cavity;

the oil suction port and the oil inlet have a height difference in the first direction.

In an embodiment, a projection of the oil suction opening in the first direction is lower than a projection of the oil inlet in the first direction.

In one embodiment, the distance between the projection of the oil suction opening in the first direction and the projection of the oil inlet in the first direction is defined as H, wherein H is more than or equal to 25mm and less than or equal to 40mm.

In an embodiment, a side of the casing facing the oil pan is convexly provided with a peripheral bulge, the peripheral bulge and the casing enclose to form an upper oil storage tank, the oil pan covers a notch of the upper oil storage tank and encloses to form the oil storage cavity, and one end of the oil inlet pipe, which is far away from the oil inlet, penetrates through a wall of the upper oil storage tank and is provided with the oil suction opening.

In one embodiment, the oil pan is arranged in a concave arc shape, the oil pan forms a lower oil storage groove, the oil pan is connected with the periphery protrusion, so that the upper oil storage groove and the lower oil storage groove are enclosed to form the oil storage cavity, and the oil suction port extends into the lower oil storage groove.

In an embodiment, an oil drain is formed at the lowest point of the oil pan, and the oil pan further comprises an oil drain bolt, wherein the oil drain bolt is arranged at the oil drain.

In one embodiment, a magnetic part is arranged at one end of the oil drainage bolt extending into the oil storage cavity;

and/or the oil pan is detachably connected with the peripheral bulge.

In one embodiment, the motor further comprises a strainer, and the strainer is arranged at the oil suction port;

and/or the oil inlet pipe and the shell are of an integrally formed structure.

In an embodiment, the motor further includes a water cooler and a circulation oil path, the water cooler is disposed in the housing, one end of the circulation oil path is connected to an oil outlet of the oil suction pump, and the other end of the circulation oil path passes through the water cooler and the cavity and is communicated with the oil storage cavity.

The utility model discloses still provide a vehicle, including car main part and foretell motor.

The utility model discloses technical scheme's motor is through setting up the appearance chamber in the casing, with the fixed and protection oil suction pump of utilization appearance chamber installation, and set up the oil pan, make the oil pan be connected with the casing and close and form the oil storage chamber in order to enclose, thereby utilize the oil storage chamber to hold coolant oil (coolant liquid), further set up the oil inlet pipe, make the one end and the oil inlet intercommunication of oil inlet pipe, and be equipped with the oil absorption mouth at the other end of oil inlet pipe, thereby utilize oil absorption mouth and oil storage chamber intercommunication, there is the difference in height at the first direction of perpendicular to motor axial direction through setting up oil absorption mouth and oil inlet, thereby reduce the oil absorption mouth of oil suction pump to oil storage chamber intracavity bottom position, under the condition that the oil suction pump is not empty guaranteeing, can be corresponding whole cooling oil mass in the oil storage chamber that reduces whole car, the reduction of oil mass, can effectively reduce overall cost, reduce the stirring loss in the electric drive system, the whole drive efficiency of motor that makes increases, improve whole journey mileage, improve whole car thermal management efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present invention;

fig. 2 is a schematic axial sectional view of a motor according to an embodiment of the present invention;

fig. 3 is a schematic structural view of another view angle of the motor according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a further view angle of the motor according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another view angle of the motor according to an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Electric machine	22	Oil drainage bolt
1	Shell body	3	Oil suction pump
				11	Containing chamber	31	Oil inlet
12	Peripheral projection	4	Oil inlet pipe
				121	Upper oil storage tank	41	Oil suction port
2	Oil pan	5	Coarse filter
				21	Oil storage cavity	6	Water cooler
211	Lower oil storage tank	700	Vehicle with a steering wheel

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.

Furthermore, descriptions in the present application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The driving motor of the new energy automobile needs good heat dissipation in continuous operation, otherwise, the driving motor is overheated due to low heat dissipation efficiency, the torque and the power output of the motor are affected, the output efficiency of the motor is reduced rapidly, and in extreme cases, the motor may even be burnt out. Therefore, oil cooling heat dissipation is required for the stator and the rotor inside the motor and the combined electric control system and the speed reducer.

Based on the above problem, the utility model provides a motor 100. It is understood that the motor 100 may be applied to electric devices used in industry, agriculture and manufacturing, such as new energy vehicles, electric tools, automation devices, etc., without limitation.

Please refer to fig. 1 to fig. 5 in combination, in the embodiment of the present invention, the motor 100 includes a housing 1, an oil pan 2 and an oil suction pump 3, wherein, a cavity 11 is disposed in the housing 1, the oil pan 2 is connected to the housing 1, and is enclosed with the housing 1 to form an oil storage cavity 21, the oil suction pump 3 is disposed in the cavity 11, the oil suction pump 3 has an oil inlet 31, an oil inlet pipe 4, one end of the oil inlet pipe 4 is communicated with the oil inlet 31, the other end of the oil inlet pipe 4 is provided with an oil suction port 41, the oil suction port 41 is communicated with the oil storage cavity 21, wherein, a direction perpendicular to an axial direction of the motor 100 is defined as a first direction, and the oil suction port 41 and the oil inlet 31 have a height difference in the first direction.

In this embodiment, the housing 1 is hollow to form a cavity, the motor 100 further includes a stator, a stator winding, a rotor shaft, and other components disposed in the cavity 11, and a magnetic pole of the stator is a permanent magnet, that is, a permanent magnetic steel, and includes materials such as ferrite, alnico, and neodymium iron boron, which are not limited herein. The rotor is generally formed by laminating silicon steel sheets, and the rotor shaft penetrates through the rotor and is arranged through the shell 1. It can be understood that the housing 1 includes a housing main body, a front end cover and a rear end cover, the front end cover and the rear end cover are connected to two ends of the housing main body and enclose with the housing main body to form a cavity. The shell main body extends along the axial direction of the rotor shaft, the rotor shaft penetrates through the front end cover, the front end cover is the end where the power output of the motor 100 is located, the rear end cover is the other end opposite to the axial direction of the front end cover, one side, back to the containing cavity, of the rear end cover is provided with a fine filter, and the fine filter is used for filtering cooling oil and adsorbing small impurities in the cooling oil. Optionally, the fine filter includes, but is not limited to, a filter, a suction filter, an oil filter, and the like.

It is understood that the front end cover and the rear end cover are connected with the shell main body of the housing 1 by bolts, and the bolts include a plurality of bolts arranged along the circumference of the shell main body. All there is the trompil on front end housing and the rear end cap for the installation bearing, the bearing is used for supporting the rotor shaft on the one hand, and on the other hand guarantees the normal rotation of rotor shaft.

In an embodiment, the motor 100 further includes a circulating oil path, the circulating oil path is communicated with each component inside the motor, an oil outlet disposed on the oil suction pump 3 is communicated with an oil inlet of the fine filter through one section of the circulating oil path, the cooling oil pumped out from the oil suction pump 3 is finely filtered, and smaller and finer impurities are filtered out, so as to reduce the wear of the impurities on the transmission system, thereby prolonging the service life of the oil cooling system and the whole motor 100. An oil outlet of the fine filter is communicated with other sections of the circulating oil way, one section of the fine filter penetrates through the cooling device to cool the filtered oil body, cooling oil penetrating through the cooling device enters the containing cavity through other sections of the circulating oil way, one part of the circulating oil way lubricates a bearing and a gear, the other part of the circulating oil way cools a stator and a rotor, and then the circulating oil way collects and reflows the cooling oil after heat exchange with the interior of the motor into the oil storage cavity to complete one-time cooling circulation.

In the present embodiment, the oil pan 2 is connected to the housing 1, and when the electric motor 100 is in the mounting position, i.e., the position during operation, the oil pan 2 is at the lowermost portion of the housing 1. In order to realize that motor 100 makes things convenient for dismouting and maintenance, oil pan 2 is connected through the bolt with casing 1 usually, also can be connected through mechanical buckle structure, or bonds through adhesive between oil pan 2 and the casing 1, is used for fixed oil pan 2 and casing 1 on the one hand, makes its connection more firm, and on the other hand plays sealed effect for prevent that the cooling oil from revealing in oil storage chamber 21.

Of course, in other embodiments, the oil pan 2 and the housing 1 may also be fixedly connected, for example, welded or integrally formed, so as to improve the connection stability and the sealing property between the oil pan 2 and the housing 1, which is not limited herein.

In the present embodiment, the oil pan 2 is connected to the housing 1 such that the oil pan 2 and the housing 1 enclose a reservoir chamber 21, and thereby the reservoir chamber 21 is used to hold or store cooling liquid, cooling oil, or the like. Alternatively, the oil pan 2 includes, but is not limited to, an oil collector, an oil sump bottom shell, an oil sump, and the like, and is not limited thereto. It can be understood that the cooling oil in the oil storage chamber 21 is pumped by the oil suction pump 3, and the stator, the rotor and other components in the motor 100 are cooled, the bearings and the gears in the motor 100 are lubricated and cooled circularly, and the circulating oil path returns to the oil storage chamber 21 after heat exchange in the motor 100, so that the circulating oil path can reciprocate circularly.

In the present embodiment, the size of the oil storage chamber 21 is related to the structural size, power and working condition of the whole motor 100. When the structural size of the motor 100 is large, under the conditions of heavy load and high speed, and the power of the motor 100 is large, the more cooling oil the motor 100 needs, the larger the size of the oil storage chamber 21 needs, and at this time, the sizes of the oil pan 2 and the relevant parts of the housing 1 need to be adjusted.

In this embodiment, the oil suction pump 3 is disposed in the cavity and fixed on the inner wall of the housing 1, the oil suction pump 3 has an oil inlet 31 and an oil outlet, the oil inlet 31 of the oil suction pump 3 is communicated with the oil inlet pipe 4, the other end of the oil inlet pipe 4 is located at the bottom of the oil storage cavity 21, and an oil suction port 41 is disposed at one end of the oil inlet pipe 4 located inside the oil storage cavity 21. Optionally, the oil suction pump 3 is an electronic oil pump or a mechanical oil pump, and the cooling oil in the oil storage chamber 21 is pumped into the circulation pipeline by the oil suction pump 3 to realize cooling oil circulation inside the motor, which is not limited herein.

It can be understood that the main function of the suction pump 3 is to pump the cooling oil in the oil storage chamber 21 to the next component communicating with the oil outlet of the suction pump 3, and the suction pump 3 is the most important component of the cooling system of the motor 100 and is the key of the cooling oil circulation. Meanwhile, the oil suction pump 3 can also control the amount of oil sucked so as to deal with different working conditions and loads and adjust the amount of oil pumped into the cavity in time. The oil suction pump 3 is communicated with the oil storage cavity 21 through an oil inlet pipe 4, one end of the oil inlet pipe 4 sucks cooling oil in the oil storage cavity 21 through an oil suction port 41, and the other end of the oil inlet pipe is connected with an oil inlet 31 of the oil suction pump 3 to convey the cooling oil to the interior of the oil suction pump 3. Alternatively, the oil inlet pipe 4 and the housing 1 may be integrally formed. Of course, the oil inlet pipe 4 may also be an external pipe, and is provided separately from the housing 1, which is not limited herein.

In the present embodiment, a direction perpendicular to the axial direction of the housing 1 is defined as a first direction, and the oil suction port 41 and the oil inlet 31 have a height difference in the first direction. It is understood that the axial direction of the housing 1 is the same as the extending direction of the rotor shaft of the motor 100, and the first direction is perpendicular to the axial direction of the rotor shaft of the motor 100.

It can be understood that, in order to ensure that the cooling oil that flows back through the circulating oil path after the heat exchange inside the motor 100 can be completely collected, the oil pan 2 is usually disposed at the bottom of the housing 1 when being installed, at this time, because the oil suction pump 3 has a certain volume, the oil inlet 31 of the oil suction pump 3 also has a certain height relative to the bottom of the oil pan 2, through the oil inlet pipe 4, the oil suction pump 3 is communicated with the oil storage cavity 21 by using the oil inlet pipe 4, so that the height difference exists between the oil suction port 41 of the oil inlet pipe 4 and the oil inlet 31 in the first direction, thereby ensuring that the whole cooling oil amount in the oil storage cavity 21 can be correspondingly reduced under the condition that the oil suction pump 3 does not suck air, reducing the oil amount, effectively reducing the overall cost, reducing the oil stirring loss in the electric drive system, increasing the overall drive efficiency of the whole vehicle motor, and improving the cruising mileage.

In an embodiment, a projection of the oil suction opening 41 in the first direction is lower than a projection of the oil inlet 31 in the first direction. It can be understood that, to ensure smooth oil suction and reduce the cooling oil stored in the oil storage cavity 21, the projection of the oil suction opening 41 in the first direction is lower than the projection of the oil inlet 31 in the first direction, that is, when the motor 100 is in the tooling, the position of the oil suction opening 41 is closer to the ground than the position of the oil inlet 31 of the oil suction pump 3, and is closer to the bottom of the oil pan 2, so that when the motor 100 is in operation, the oil suction opening 41 can maximally suck the cooling oil stored in the oil storage cavity 21 into the oil suction pump 3.

In one embodiment, the distance between the projection of the oil suction opening 41 in the first direction and the projection of the oil inlet 31 in the first direction is defined as H, wherein H is more than or equal to 25mm and less than or equal to 40mm.

It can be understood that the distance between the projections of the oil suction opening 41 and the oil inlet 31 in the first direction is the height difference H between the oil suction opening 41 and the oil inlet 31 in the first direction, that is, the height difference H between the oil suction opening 41 and the oil inlet 31 in the motor tool is defined by the distance between the projections of the oil suction opening 41 and the oil inlet 31 in the first direction. The height difference H is related to the structural size, power and operating conditions of the overall motor 100. When the position of the oil suction pump 3 is fixed, the length and the angle of the oil inlet pipe 4, that is, the vertical height difference H between the oil inlet 31 of the oil suction port 41 and the oil inlet 31 of the oil suction pump 3 in the first direction, are adjusted to adapt to different sizes, powers and working conditions of the motor 100. When the motor 100 has a large structural size, is under a heavy-load high-speed working condition and has a large power of the motor 100, the more cooling oil the motor 100 needs, the height difference H needs to be properly increased, the height of the oil suction port 41 needs to be reduced, the oil suction state of the oil suction pump 3 is sufficient, the influence on the overall cooling and lubrication of the motor 100 due to the air suction state is avoided, and the range of the height difference H is 25mm to 40mm in order to adapt to different sizes, powers and working conditions of the motor 100.

Alternatively, the height difference H is 25mm, 28mm, 30mm, 33mm, 35mm, 38mm, 40mm, etc., which is not limited herein.

It can be understood that, in a normal situation, under the condition that the suction pump 3 is not empty-sucking, the vertical height difference H between the suction port 41 and the oil inlet 31 of the suction pump 3 in the first direction needs to be increased, and the height of the suction port 41 is reduced, so as to reduce the cooling oil stored in the oil storage cavity 21, thereby achieving the purposes of reducing the cost, reducing the oil stirring loss in the system, increasing the overall driving efficiency of the motor 100, and improving the thermal management efficiency of the whole vehicle.

In an embodiment, a side of the housing 1 facing the oil pan 2 is convexly provided with a peripheral protrusion 12, the peripheral protrusion 12 and the housing 1 enclose an upper oil storage tank 121, the oil pan 2 covers a notch of the oil storage tank 121 and encloses an oil storage cavity 21, and one end of the oil inlet pipe 4 provided with the oil suction port 41 penetrates through a groove wall of the upper oil storage tank 121.

In the present embodiment, the peripheral protrusion 12 and the housing 1 are integrally formed, that is, the peripheral protrusion 12 is a part of the housing 1. The peripheral projection 12 has a certain thickness, and the side of the peripheral projection 12 facing away from the housing 1 is connected to the oil pan 2. It is understood that the peripheral projection 12 may be a boss, a collar, or the like, and is not limited thereto. Of course, in other embodiments, the peripheral protrusion 12 and the housing 1 may be provided as a separate structure.

It will be appreciated that the provision of the peripheral projection 12 integrally with the housing 1 is intended to ensure the structural strength of the reservoir chamber 21 and to reduce the assembly process of the housing 1 with external parts, thereby increasing the sealing performance of the housing as a whole. Meanwhile, the structure of the peripheral bulge 12 can be connected and sealed with the oil pan 2 well on the premise of collecting the backflow cooling oil, and is a structural connecting piece between the oil pan 2 and the shell 1.

In this embodiment, the peripheral protrusion 12 is disposed in an annular cylindrical shape, and the peripheral protrusion 12 and the housing 1 together enclose an upper oil reservoir 121. Meanwhile, the oil pan 2 is mounted and connected with one side of the peripheral bulge 12, which faces away from the shell 1, so that the notch of the upper oil storage tank 121 is covered and closed, and the oil storage chamber 21 is formed by enclosing the notch and the upper oil storage tank together.

Alternatively, the oil pan 2 is detachably connected to the peripheral projection 12. It is understood that the oil pan 2 and the peripheral projection 12 may be bolted, mechanically snapped, or welded, without limitation. When being installed, the oil pan 2 and the peripheral bulge 12 are coated with adhesive glue, so that the oil pan 2 and the peripheral bulge 12 are fixed and connected more firmly, and the oil pan plays a role in sealing and preventing cooling oil in the oil storage cavity 21 from leaking.

In the present embodiment, one end of the oil inlet pipe 4, which is far away from the oil inlet, penetrates through the wall of the upper oil storage tank 121, and is provided with an oil suction port 41. Since the peripheral projection 12 is integrally formed with the housing 1, when the oil inlet pipe 4 is integrally formed with the housing 1, it is required that the oil inlet pipe 4 pass through the inner wall of the peripheral projection 12, i.e., the wall of the upper oil reservoir 121, so that the oil suction port 41 reaches the inside of the oil reservoir chamber 21.

In one embodiment, the oil pan 2 is formed in a concave arc shape, the oil pan 2 forms a lower oil reservoir 211, the oil pan 2 is connected to the peripheral protrusion 12 so that the upper oil reservoir 121 and the lower oil reservoir 211 enclose an oil storage chamber 21, and the oil suction port 41 extends into the lower oil reservoir 211.

In the present embodiment, as shown in fig. 2, the oil pan 2 is convex toward the side facing away from the housing 1, so that the side of the oil pan 2 facing the housing 1 is formed in the lower oil reservoir 211, i.e., the oil pan 2 is provided in a concave arc shape. It will be understood that the concave-curved oil pan 2, on the one hand, when connected to the peripheral protrusion 12, can suitably enlarge the internal volume of the oil reservoir chamber 21, and on the other hand, the concave-curved oil pan 2 also facilitates the flow of the cooling oil mass. Meanwhile, the concave arc-shaped oil pan 2 also creates a lowest point for the whole oil storage chamber 21, so that the cooling oil in the oil storage chamber 21 can flow out naturally without remaining in the oil storage chamber 21 when the motor 100 is maintained. It can be understood that the oil inlet pipe 4 penetrates through the wall of the upper oil reservoir 121 so that the oil suction port 5 reaches the lower oil reservoir 211.

In an embodiment, an oil drain is formed at the lowest point of the oil pan 2, and the oil pan 2 further includes an oil drain bolt 22, and the oil drain bolt 22 is disposed at the oil drain.

In this embodiment, as shown in fig. 4, an oil drain is disposed at the lowest point of the oil pan 2, an oil drain bolt 22 is disposed at the oil drain, and the oil drain bolt 22 may be fixed at the oil drain by gluing, welding, screwing, or snapping, and may be sealed by adding a related sealing element. It can be understood that, when carrying out maintenance and maintenance to motor 100, the inside coolant oil of the oil storage chamber 21 of being convenient for flows through the oil discharge opening naturally, and oil drain bolt 22 then is installed in oil discharge opening department, realizes the switching of oil discharge opening through the bolt, also is the outflow or the sealing of coolant oil, loosens the bolt soon for bolt and nut break away from, then the oil discharge opening is opened, and the coolant oil flows.

In one embodiment, a magnetic member is disposed at an end of the oil discharging bolt 22 extending into the oil storage chamber 21. It can be understood that, by the magnetic member disposed inside the oil storage chamber 21, impurities in the cooling oil, especially metal impurities with magnetism, are adsorbed by the magnetic member, so that the impurities are prevented from entering the inside of the motor 100 through the circulating oil path, and the lubricated bearings, gears or the cooled rotor and stator are prevented from being worn and damaged, thereby prolonging the service life of the whole motor 100.

In one embodiment, as shown in fig. 2, the housing further comprises a coarse filter 5, and the coarse filter 5 is installed at the oil suction port 41.

It is to be understood that the strainer 5 includes, but is not limited to, a filter, a suction filter, an oil filter, etc., and is not limited thereto. By arranging the coarse filter 5 at the oil suction port 41, the coarse filter 5 is used for primarily filtering the cooling oil output to the circulating oil path in the oil suction pump 3, so that impurities with larger volume are filtered, then the cooling oil pumped out from the oil suction pump 3 can pass through the fine filter again for secondary filtering, and finer impurities are filtered, so that the abrasion of the impurities to a transmission system is reduced, and the service lives of the oil cooling system and the whole motor 100 are prolonged.

In an embodiment, the motor 100 further includes a water cooler 6 and a circulation oil path, the water cooler 6 is disposed in the casing 1, one end of the circulation oil path is connected to an oil outlet of the oil suction pump 3, and the other end of the circulation oil path passes through the water cooler 6 and the cavity 11 and is communicated with the oil storage chamber 21.

In this embodiment, as shown in fig. 1 to 5, the water cooler 6 is disposed on the rear end cover of the casing 1, and can be fixed to the rear end cover of the casing 1, or an independent water cooler 6 can be fixed to the casing 1 in a detachable connection manner and located on one side away from the cavity, and fins are disposed on the surface of the water cooler 6 to enhance the heat dissipation of the water cooler 6. Wherein, the water cooler 6 outside is equipped with water inlet and delivery port, and the inside annular water course that is equipped with of water cooler 6, water inlet and delivery port and annular water course intercommunication.

It is understood that the water cooler 6 includes, but is not limited to, a cooling device, a heat exchanger, an oil cooler, a heat exchanger, etc., and is not limited thereto. The water channel in the water cooler 6 may be wired in a linear type, a curved type, a spiral type or a return type, and is wrapped and wound outside the circulation oil path, which is not limited herein. The cross section of the water channel in the water cooler 6 may be circular, rectangular, trapezoidal or triangular, and is not limited herein. The water cooler 6 is mainly used for cooling the wrapped circulation oil path, and also dissipates heat to the casing 1 of the motor 100 through a water channel and heat dissipation fins.

In this embodiment, the circulating oil path passes through the water cooler 6 and the cavity 11, the water channel in the water cooler 6 wraps up the circulating oil path, and the cooling oil in the circulating oil path is cooled by the water flow flowing through the water cooler 6, so as to achieve the cooling treatment of the motor 100.

It can be understood that one end of the circulating oil path is communicated with the oil outlet of the fine filter, the oil filtered by the fine filter flows into the water cooler 6 for cooling, the other end of the circulating oil path extends into the cavity 11 of the casing 1, and the circulating oil path is arranged inside or outside the casing 1, the front end cover and the rear end cover, may be integrally formed with the casing 1, the front end cover and the rear end cover, or may be installed on the casing 1, the front end cover and the rear end cover, which is not limited herein.

In this embodiment, the circulating oil way is used for lubricated and refrigerated port, install the fuel sprayer, spray thrower or fueling injection equipment, perhaps when not installing above facility, the coolant oil directly flows from the port, do not do the injecion here, circulating oil way partly sets up in the lubricated part top of needs such as bearing and gear, the coolant oil that flows (blowout) through circulating oil way port is lubricated the part that needs to lubricate, the effect of cooling down is also played simultaneously, another part of circulating oil way sets up in rotor end top and stator winding tip, the coolant oil that flows (blowout) through circulating oil way port cools off the huge stator of calorific capacity and rotor, the coolant oil absorbs a large amount of heats at the stator tip, in order to reach the mesh of cooling down, adopt and be applicable to the utility model discloses a technical scheme also is in the protection range.

It can be understood that after lubricating the bearings and the gears and cooling the stator and the rotor, the cooling oil flows back to the oil storage cavity 21 of the oil pan 2 through the circulating oil path, then the oil is absorbed through the oil absorption pump 3, the cooling oil is absorbed into the fine filter for the second filtration, and then the cooling oil is cooled through the water cooler 6 and enters the cavity 11 to form a circulating cooling oil path, so as to achieve the purpose of uninterruptedly lubricating and cooling the motor 100.

The utility model discloses still provide a vehicle 700, this vehicle 700 includes car main part and motor 100. The specific structure of the vehicle 700 refers to the foregoing embodiments, and since the motor 100 device adopts all technical solutions of all the foregoing embodiments, at least all beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here. It is understood that the vehicle 700 may be a new energy automobile.

The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent structure transformation of the content of the specification and the attached drawings, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. An electric machine, characterized in that the electric machine comprises:

the shell is provided with a containing cavity;

the direction perpendicular to the axial direction of the motor is defined as a first direction, and the oil suction port and the oil inlet have a height difference in the first direction.

2. The electric machine of claim 1, wherein a projection of the oil suction opening in the first direction is lower than a projection of the oil inlet in the first direction.

3. The electric machine of claim 2, wherein a distance H is defined between a projection of the oil suction opening in the first direction and a projection of the oil inlet in the first direction, wherein H ≦ 25 mm.

4. The motor of claim 1, wherein a circumferential protrusion is protruded from a side of the housing facing the oil pan, the circumferential protrusion and the housing enclose an upper oil storage tank, the oil pan covers a notch of the upper oil storage tank and encloses the oil storage cavity, and an end of the oil inlet pipe provided with the oil suction port penetrates through a wall of the upper oil storage tank.

5. The motor of claim 4, wherein the oil pan is configured as a concave arc, the oil pan forms a lower oil storage groove, the oil pan is connected to the periphery protrusion, so that the upper oil storage groove and the lower oil storage groove enclose to form the oil storage chamber, and the oil suction opening extends into the lower oil storage groove.

6. The motor of claim 5, wherein an oil drain is formed at the lowest point of the oil pan, and the oil pan further comprises an oil drain bolt, and the oil drain bolt is arranged at the oil drain.

7. The motor of claim 6, wherein one end of the oil drain bolt extending into the oil storage cavity is provided with a magnetic part;

and/or the oil pan is detachably connected with the peripheral bulge.

8. The motor according to any one of claims 1 to 7, further comprising a strainer installed at the oil suction port;

and/or the oil inlet pipe and the shell are of an integrally formed structure.

9. The motor according to any one of claims 1 to 7, further comprising a water cooler and a circulating oil path, wherein the water cooler is disposed in the housing, one end of the circulating oil path is connected to an oil outlet of the oil suction pump, and the other end of the circulating oil path passes through the water cooler and the cavity and is communicated with the oil storage cavity.

10. A vehicle characterized by comprising a vehicle body and the motor according to any one of claims 1 to 9.