CN116846145A - Generator, range extender and vehicle - Google Patents

Abstract

The invention relates to a generator, a range extender and a vehicle, which belong to the technical field of electric vehicle generators, wherein the generator can efficiently cool the whole generator through a pipeline in a rear shell assembly; the rotor and the stator are cooled in a spraying mode, the rotor is not required to be soaked in lubricating oil for cooling, the stirring to the lubricating oil during rotation of the rotor is avoided, and the peak power and the oil-electricity conversion efficiency of the motor are improved; and by delivering lubrication oil into the rotor assembly, lubrication may also be effected.

Description

Generator, range extender and vehicle

Technical Field

The invention relates to the technical field of electric vehicle engines, in particular to a generator, a range extender and a vehicle.

Background

In practice, the generator may output electrical energy for use by other devices (e.g., vehicles). When the rotor of the motor is driven by the engine to rotate around the stator, a large amount of heat can be generated, and the heat can influence the working efficiency of the generator and reduce the service life of the generator; in order to cool the rotor and stator, the rotor and stator may be soaked in lubricating oil; the lubricating oil can take away heat generated by the rotor and the stator. The heat-absorbed lubricant may then be pumped to the cooling element for cooling and then recirculated to the rotor and stator for continued cooling.

This way, although the temperature of the rotor and stator can be reduced; however, when the rotor bubbles are in the lubricating oil, it may cause unnecessary drag when it rotates; and the rotor and stator are not all in direct contact with the lubricating oil, which can lead to problems with local overheating of the rotor and stator, which still can affect the operating efficiency of the generator and reduce the life of the generator.

Disclosure of Invention

In view of the above, a generator, a range extender and a vehicle are proposed in order to provide a generator, a range extender and a vehicle which overcome or at least partially solve the above problems, comprising:

a generator, comprising: a front housing assembly, a rear housing assembly, an oil cooling assembly and an oil pump assembly;

the rear shell component comprises a rear shell, a cooling oil pipe, a pump inlet channel, a cooling inlet channel, a shaft inlet channel and a pipe inlet channel;

the oil cooling assembly comprises an oil cooler, an oil cooling water inlet pipe, an oil cooling water outlet pipe, an oil cooling oil inlet pipe and an oil cooling oil outlet pipe;

the front shell component and the rear shell are spliced into a first cavity; the rotor assembly and the stator assembly of the generator are positioned in the first cavity, and the oil pump assembly is connected with the rotor assembly;

one end of the pump inlet channel is connected with the first cavity, and the other end of the pump inlet channel is connected with an oil inlet of the oil pump assembly; one end of the cooling channel is connected with an oil outlet of the oil pump assembly, and the other end of the cooling channel is connected with the oil cooling inlet pipe; one end of the shaft inlet channel is connected with the oil cooling oil outlet pipe, and the other end of the shaft inlet channel is connected with the rotor assembly; one end of the pipe inlet channel is connected with the oil cooling outlet pipe, and the other end of the pipe inlet channel is connected with the cooling oil pipe;

the cooling oil pipe comprises a cooling oil pipe root and a plurality of cooling oil pipe stems connected with the cooling oil pipe root, and each cooling oil pipe stem is provided with a plurality of spray holes; the other end of the pipe inlet channel is connected with the root of the cooling oil pipe, and the plurality of cooling oil pipe stems are positioned in the first cavity;

the oil cooling water inlet pipe is connected with a water outlet pipe, and the oil cooling water outlet pipe is connected with a water inlet pipe.

Optionally, the rotor assembly comprises an input shaft, a bearing, a rotor support, a bolt, and a rotor;

one end of the input shaft passes through the front shell assembly and is connected with an engine so as to acquire the power of the engine;

the rotor support is fixedly connected with the input shaft through the bolt, and the outer side of the rotor support is fixedly connected with the rotor;

the bearing is located on the input shaft.

Optionally, the front housing assembly comprises a front housing and an oil seal;

the front shell is a barrel-shaped box body, the flange on one side of the front shell, which is not provided with an opening, is connected with the engine, and the flange on one side of the front shell, which is provided with the opening, is spliced with the rear shell to form a first cavity;

the oil seal is positioned at the center of one side of the front shell, which is not provided with an opening, and the input shaft extends out of the front shell through the opening filled with the oil seal to be connected with the engine.

Optionally, the head of the bolt faces the oil seal.

Optionally, the rear housing and the input shaft form a second cavity, and the other end of the input shaft channel is connected with the second cavity.

Optionally, the oil pump assembly comprises an oil pump and an oil pump rotor shaft, and the oil pump is fixedly connected with the rear shell;

the other end of the pump inlet channel is connected with an oil inlet of the oil pump, and one end of the cooling inlet channel is connected with an oil outlet of the oil pump;

the oil pump rotor shaft is connected with the other end of the input shaft.

Optionally, a hollow input shaft oil duct is arranged in the input shaft, and a rotor bracket oil duct is arranged in the rotor bracket;

one end of the input shaft oil duct is positioned at the joint of the oil pump rotor shaft and the input shaft, and the other end of the input shaft oil duct is communicated with one end of the rotor bracket oil duct; the other end of the rotor support oil duct is open.

Optionally, the method further comprises: the stator assembly comprises silicon steel sheets and windings;

the silicon steel sheet is fixedly connected with the front shell assembly, and the winding is inserted into the silicon steel sheet.

Optionally, the method further comprises: the electric control assembly comprises a motor controller, an electric control water inlet pipe and an electric control water outlet pipe;

the motor controller is connected with the stator assembly to acquire electric energy generated by the stator assembly;

the electric control water inlet pipe and the electric control water outlet pipe are connected with a whole vehicle water circulation system so as to cool the motor controller.

Optionally, the electric control water outlet pipe is also connected with the oil cooling water inlet pipe, and the oil cooling water outlet pipe is connected with the whole vehicle water circulation system.

Optionally, the oil cooling water inlet pipe and the oil cooling water outlet pipe are connected with a whole vehicle water circulation system.

The embodiment of the invention also provides a range extender, which comprises an engine and the generator.

The embodiment of the invention also provides a vehicle comprising the range extender.

The invention has the beneficial effects that:

the embodiment of the invention provides a generator, which can efficiently cool the whole generator through a pipeline in a rear shell assembly; the rotor and the stator are cooled in a spraying mode, the rotor is not required to be soaked in lubricating oil for cooling, the stirring to the lubricating oil during rotation of the rotor is avoided, and the peak power and the oil-electricity conversion efficiency of the motor are improved; and by delivering lubrication oil into the rotor assembly, lubrication may also be effected.

Drawings

FIG. 1 is a schematic diagram of a first perspective of a generator according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a second perspective of a generator according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a generator according to an embodiment of the present invention;

FIG. 4 is a schematic view of the rear housing of a generator according to an embodiment of the present invention;

FIG. 5 is a schematic view of a cooling oil pipe of a generator according to an embodiment of the present invention;

fig. 6 is a schematic diagram of an oil cooler of a generator according to an embodiment of the present invention.

Reference numerals illustrate:

generator-100, front housing component-1, front housing-11, oil seal-12, first cavity-111, rear housing component-2, rear housing-21, pump inlet channel-211, cold inlet channel-212, shaft inlet channel-213, pipe inlet channel-214, second cavity-215, cooling oil pipe-22, cooling oil pipe root-221, cooling oil pipe stem-222, nozzle-223, rotor component-3, input shaft-31, input shaft oil channel-311, bearing-32, rotor bracket-33, rotor bracket oil channel-331, bolt-34, rotor-35, electric control component-4, motor controller-41, electric control water inlet pipe-42, electric control water outlet pipe-43, oil cooling component-5, oil cooler-51, oil cooling water inlet pipe-52, oil cooling water outlet pipe-53, oil cooling oil inlet pipe-54, oil cooling oil outlet pipe-55, oil pump component-6, oil pump-61, oil pump rotor shaft-62, stator component-7, silicon steel sheet-71, winding-72.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order to avoid excessive drag loss caused by stirring lubricating oil when a rotor rotates and also to efficiently cool the rotor and a stator, the embodiment of the invention provides a generator, which can efficiently cool the whole generator through a pipeline in a rear shell assembly; and the rotor and the stator are cooled in a spraying mode, so that the rotor is not required to be soaked in lubricating oil for cooling, and the phenomenon that the rotor is stirred to the lubricating oil during rotation is avoided.

Referring to fig. 1, a schematic structural diagram of a first perspective of a generator according to an embodiment of the present invention is shown; referring to fig. 2, a schematic structural diagram of a second perspective of a generator according to an embodiment of the present invention is shown; referring to FIG. 3, a schematic structural diagram of a cross section of a generator according to an embodiment of the present invention is shown; referring to fig. 4, a schematic structural view of a rear housing of a generator according to an embodiment of the present invention is shown; referring to fig. 5, a schematic structural diagram of a cooling oil pipe of a generator according to an embodiment of the present invention is shown; referring to fig. 6, a schematic diagram of the structure of an oil cooler of a generator according to an embodiment of the present invention is shown.

In an embodiment of the present invention, the generator 100 may include: a front housing assembly 1, a rear housing assembly 2, an oil cooling assembly 5 and an oil pump assembly 6;

the rear housing assembly 2 may include a rear housing 21, a cooling oil pipe 22, a pump-in passage 211, a cooling-in passage 212, a shaft-in passage 213, and a pipe-in passage 214;

the oil cooling assembly 5 comprises an oil cooler 51, an oil cooling water inlet pipe 52, an oil cooling water outlet pipe 53, an oil cooling oil inlet pipe 54 and an oil cooling oil outlet pipe 55;

the front housing component 1 and the rear housing 21 are spliced into a first cavity 111; the rotor assembly 3 and the stator assembly 7 of the generator 100 are positioned in the first cavity 111, and the oil pump assembly 6 is connected with the rotor assembly 3;

one end of the pump inlet channel 211 is connected with the first cavity 111, and the other end of the pump inlet channel 211 is connected with an oil inlet of the oil pump assembly 6; one end of the cold inlet channel 212 is connected with an oil outlet of the oil pump assembly 6, and the other end of the cold inlet channel 212 is connected with an oil cold inlet pipe 54; one end of the inlet shaft channel 213 is connected with the oil cooling oil outlet pipe 55, and the other end of the inlet shaft channel 213 is connected with the rotor assembly 3; one end of the inlet pipe channel 214 is connected with the oil cooling outlet pipe 55, and the other end of the inlet pipe channel 214 is connected with the cooling oil pipe 22;

the cooling oil pipe 22 comprises a cooling oil pipe root 221 and a plurality of cooling oil pipe stems 222 connected with the cooling oil pipe root 221, and each cooling oil pipe stem 222 is provided with a plurality of spray holes 223; the other end of the pipe inlet channel 214 is connected with the root 221 of the cooling oil pipe, and a plurality of cooling oil pipe stems 222 are positioned in the first cavity 111;

the oil cooling water inlet pipe 52 is connected with a water outlet pipe, and the oil cooling water outlet pipe 53 is connected with a water inlet pipe.

In an embodiment of the present invention, the generator 100 may be composed of a front housing assembly 1, a rear housing assembly 2, an oil cooling assembly 5, and an oil pump assembly 6; the front housing component 1 and the rear housing component 2 can form an integral frame of the generator 100, and the pipelines in the rear housing 21 can be matched with the oil cooling component 5 and the oil pump component 6 to realize cooling and lubricating treatment of the generator 100. The generator 100 may be an extended range generator or other types of generators, as embodiments of the invention are not limited in this regard.

As an example, the rear housing assembly 2 may be composed of the rear housing 21, the cooling oil pipe 22, the intake pump passage 211, the intake cooling passage 212, the intake shaft passage 213, and the intake pipe passage 214; the rear housing 21 may have a flat plate structure or a cube with one surface open; the rear housing 21 may be spliced with the front housing assembly 1 to form a first cavity 111, and the stator assembly 7 and the rotor assembly 3 of the generator 100 may be placed in the first cavity 111.

The pump inlet channel 211 can be a hollow pipe with two openings; the intake passage 211 may be fixed to the rear housing 21, and the intake passage 211 may be respectively communicated with the first cavity 111 and the oil pump assembly 6, so that the oil pump assembly 6 may draw out the lubricant in the first cavity 111 through the intake passage 211, thereby preventing the lubricant from generating drag force to the rotating rotor 35.

The cooling channel 212 may be a hollow pipe with two openings; the cooling intake passage 212 may also be fixed to the rear housing 21, and the cooling intake passage 212 may be respectively communicated with the oil pump assembly 6 and the oil cooling assembly 5, so that the oil pump assembly 6 cools the lubricant pump, which absorbs heat and is extracted from the first cavity 111, into the oil cooling assembly 5 through the cooling intake passage 212.

The inlet channel 213 may be a hollow pipe with two openings; the inlet shaft passage 213 may be fixed to the rear housing 21, and the inlet shaft passage 213 may be respectively communicated with the oil cooling unit 5 and the rotor unit 3 so that the lubricating oil cooled by the oil cooling unit 5 may flow to the rotor unit 3 through the inlet shaft passage 213 to cool and lubricate the rotor unit 3.

The pipe inlet channel 214 may be a hollow pipe with two openings; the intake passage 214 may also be fixed to the rear housing 21, and the intake passage 214 may be respectively communicated with the oil cooling assembly 5 and the cooling oil pipe 22 so that the lubricating oil cooled by the oil cooling assembly 5 may flow to the cooling oil pipe 22 through the intake passage 214.

The cooling oil pipe 22 may include a cooling oil pipe root 221 and a plurality of cooling oil pipe stems 222 connected to the cooling oil pipe root 221; the root 221 of the cooling oil pipe may be a hollow pipe with a plurality of holes formed on the side surface; the cooling oil pipe stem 222 may be a pipe with one end open, the other end closed, hollow, and a plurality of spray holes 223 arranged on the side surface; the opening of the cooling oil tube stem 222 may be in communication with the opening of the side of the cooling oil tube root 221, and at least one of the plurality of holes in the side of the cooling oil tube root 221 may be in communication with the inlet passage 214 for the input of lubrication oil into the cooling oil tube 22.

Of course, the root 221 of the cooling oil pipe may be a hollow pipe with one end open and a plurality of holes on the side surface; the inlet passage 214 may communicate with an end opening of the cooling oil pipe root 221 to input lubricating oil into the cooling oil pipe 22.

In practice, the plurality of cooling oil tube stems 222 may be distributed throughout different locations of the first cavity 111; preferably, the cooling oil tube stem 222 may be disposed at the top of the first cavity 111; thus, after the cooled lubricant in the inlet passage 214 enters the cooling oil pipe stem 222 through the cooling oil pipe root 221, the cooled lubricant may be sprayed into the first cavity 111 through the nozzle of the cooling oil pipe stem 222, for example: can be sprayed onto the stator assembly 7 and the rotor assembly 3; because the lubricating oil is cooled, the lubricating oil can absorb heat generated by the stator assembly 7 and the rotor assembly 3, so that the temperature of the stator assembly 7 and the rotor assembly 3 is reduced, and the influence of magnetic steel demagnetization and the like caused by high temperature of the stator assembly 7 and the rotor assembly 3 is avoided, and the service life and the working efficiency of the generator 100 are influenced.

The lubricating oil sprayed onto the rotor assembly 3 and the stator assembly 7 will, due to the rotation of the rotor assembly 3 and the action of the earth's gravity, re-flow to the bottom of the first cavity 111 and be pumped away again by the inlet pump channel 211 and cooled again by the oil pump assembly 6 and the oil cooling assembly 5 and cooled again by the inlet pipe channel 214 and the inlet shaft channel 213 for cooling the components in the generator 100.

In practice, the oil pump assembly 6 may be connected to the rotor assembly 3; thus, when the rotor assembly 3 rotates, power may be provided to the oil pump assembly 6, thereby driving the oil pump assembly 6 to draw lubrication oil from within the first cavity 111, and driving the oil pump assembly 6 to pump the drawn lubrication oil through the inlet passage 212 to the oil cooling assembly 5, and continuing to pump through the oil cooling assembly 5 to the inlet passage 214, the inlet shaft passage 213, the cooling oil pipe 22, and so forth.

As an example, the oil cooling assembly 5 may include an oil cooler 51, an oil cooling water inlet pipe 52, an oil cooling water outlet pipe 53, an oil cooling oil inlet pipe 54, and an oil cooling oil outlet pipe 55; the oil cooling water inlet pipe 52 and the oil cooling water outlet pipe 53 can be hollow pipelines with two open ends, and the oil cooling water inlet pipe 52 and the oil cooling water outlet pipe 53 can be respectively connected with water pipes in the oil cooler 51; the oil cooling inlet pipe 54 and the oil cooling outlet pipe 55 may be hollow pipes with two open ends, and the oil cooling inlet pipe 54 and the oil cooling outlet pipe 55 may be connected with oil pipes in the oil cooler 51, respectively.

The water pipe and the oil pipe in the oil cooler 51 may be adjacently disposed so that the water in the water pipe may absorb heat of the lubricating oil in the oil pipe, thereby realizing cooling of the lubricating oil. The oil cooling water inlet pipe 52 is connected with a water outlet pipe, and the oil cooling water outlet pipe 53 can be connected with a water inlet pipe so as to continuously supply cold water to the oil cooler 51 through the water outlet pipe, thereby continuously taking away the heat of the lubricating oil in the oil cooler 51 and continuously cooling the lubricating oil.

As another example, the lubricating oil and water in the oil cooler 51 may also be heat exchanged by other structures, such as: by staggering the blocks of cubes, embodiments of the present invention are not limited in this regard.

In the embodiment of the present invention, one end of the pump inlet channel 211 may be connected to the first cavity 111, and the other end of the pump inlet channel 211 may be connected to the oil inlet of the oil pump assembly 6; thus, the lubricating oil having absorbed heat in the first cavity 111 can be pumped out by the oil pump assembly 6 through the pump inlet passage 211.

Then, the lubricating oil in the oil pump assembly 6 may be pumped by the oil pump assembly 6 to one end of the cooling passage 212 through the oil outlet, and pumped from one end of the cooling passage 212 to the other end of the cooling passage 212; the other end of the cold feed passage 212 may be connected to the oil cold feed pipe 54; thus, the lubricating oil can enter the oil-cooled oil inlet pipe 54 from the other end of the oil inlet passage 212 and enter the oil cooler 51 through the oil-cooled oil inlet pipe 54 to be cooled; then, the oil enters the inlet pipe channel 214, the inlet shaft channel 213 and the like from the oil cooler 51 to cool and lubricate the generator.

The lubricating oil cooled by the oil cooler 51 may enter the intake passage 214 and the intake passage 213 through the oil cooling outlet pipe 55. Specifically, one end of the inlet passage 214 may be connected to the oil cooling outlet pipe 55, and the other end of the inlet passage 214 may be connected to the cooling oil pipe 22; thus, the lubricating oil can enter one end of the inlet pipe passage 214 through the oil cooling outlet pipe 55 and enter the cooling oil pipe 22 through the other end of the inlet pipe passage 214.

The lubricating oil introduced into the cooling oil pipe 22 may be sprayed into the first cavity 111 through the spray head of the cooling oil pipe stem 222, thereby cooling and lubricating the rotor assembly 3, the stator assembly 7, etc. in the first cavity 111.

The lubricating oil sprayed onto the rotor assembly 3 will be thrown off the rotor assembly 3 during rotation of the rotor assembly 3 and flow to the bottom of the first cavity 111; the lubricant on the stator assembly 7 will leave the stator assembly 7 under the force of gravity and flow to the bottom of the first cavity 111.

In addition, one end of the shaft inlet channel 213 may be connected to the oil cooling outlet pipe 55, and the other end of the shaft inlet channel 213 may be connected to the rotor assembly 3; thus, the lubricating oil can enter one end of the inlet shaft passage 213 through the oil cooling outlet pipe 55 and be supplied to the rotor assembly 3 through the other end of the inlet shaft passage 213.

A portion of the lubrication oil supplied to the rotor assembly 3 through the inlet shaft channel 213 will lubricate the rotor assembly 3, and another portion will cool the rotor assembly 3 and be thrown away from the rotor assembly 3 during rotation of the rotor assembly 3 and flow to the bottom of the first cavity 111.

The lubrication oil flowing to the bottom of the first cavity 111 will be pumped away by the inlet pump channel 211 to avoid drag on the rotor assembly 3.

In an embodiment of the present invention, the rotor assembly 3 of the generator 100 may include an input shaft 31, a bearing 32, a rotor bracket 33, bolts 34, and a rotor 35; one end of the input shaft 31 passes through the front housing assembly 1 and is connected with the engine to acquire the power of the engine; the rotor bracket 33 is fixedly connected with the input shaft 31 through a bolt 34, and the outer side of the rotor bracket 33 is fixedly connected with the rotor 35; a bearing 32 is located on the input shaft 31.

In practice, the rotor assembly 3 of the generator 100 may include an input shaft 31, bearings 32, a rotor support 33, bolts 34, and a rotor 35; the input shaft 31 may be a multi-section cylinder, and the input shaft 31 may pass through the front housing assembly 1 and be connected with a torque limiter of the engine through a head spline at one end, so that the input shaft 31 rotates under the rotation of the engine, thereby driving the whole rotor assembly 3 to rotate, and further enabling the generator 100 to obtain the power of the engine; the rotor assembly 3 and the stator assembly 7 then cooperate to generate back emf, thereby converting the mechanical energy of the engine into electrical energy.

The rotor support 33 may be composed of a plurality of spokes, which may be fixedly connected to the input shaft 31 by bolts 34; the rotor 35 may be fixed to the outer side of the rotor frame 33, specifically, to the outer side of each spoke; bearings 32 may be provided on the input shaft 31, and the bearings 32 may be used to support the input shaft 31 and reduce the friction coefficient of the rotating shaft during rotation and to ensure the rotational accuracy of the input shaft 31.

In one embodiment of the present invention, the front housing assembly 1 includes a front housing 11 and an oil seal 12; the front shell 11 is a barrel-shaped box body, a flange on one side of the front shell 11 without an opening is connected with the engine, and the flange on one side of the front shell 11 with the opening is spliced with the rear shell 21 to form a first cavity 111; the oil seal 12 is located at the center of the non-opening side of the front case 11, and the input shaft 31 is connected to the engine by extending out of the front case 11 through the opening filled with the oil seal 12.

In practical applications, the front housing assembly 1 may be composed of a front housing 11 and an oil seal 12; wherein, the front housing 11 may be a barrel-shaped case, and one side of the front housing 11 may be open; the flange on the non-open side of the front housing 11 (flange, also called flange collar or flange. Flange is the part of the shaft-to-shaft connection for connection between pipe ends, and also the flange on the device access for connection between two devices, such as a speed reducer flange) can be connected to the engine, and the flange on the open side of the front housing 11 can be spliced with the rear housing 21 into the first cavity 111.

The oil seal 12 may be a ring-shaped seal member which may be at a center position of the non-opening side of the front housing 11, and the input shaft 31 of the rotor assembly 3 may extend out of the front housing 11 through an opening filled with the oil seal 12 and be connected to the engine; the oil seal 12 may be used to fill the gap between the input shaft 31 and the opening, thereby preventing lubricant from leaking out of the first cavity 111 through the opening through which the input shaft 31 extends.

As an example, in order to avoid the input shaft 31 from colliding with the opening, which may cause damage to the input shaft 31 or the front housing 11, the oil seal 12 may be a high temperature resistant elastic material.

With the head of the bolt 34 facing the oil seal 12. The head of the bolt 34 may face the oil seal 12 of the front case 11, and the tightening direction of the bolt 34 may coincide with the rotation direction of the rotor assembly 3, thereby preventing the bolt 34 from being easily loosened.

In an embodiment of the present invention, the rear housing 21 and the input shaft 31 form a second cavity 215, and the other end of the input shaft channel 213 is connected to the second cavity 215.

In practical applications, the rear housing 21 and the input shaft 31 may form a second cavity 215, and the second cavity 215 may be connected to the other end of the input shaft channel 213; thus, a part of the lubricating oil outputted from the other end of the inlet shaft passage 213 may enter the second cavity 215 and flow to the bearing 32 on the input shaft 31 through the second cavity 215; on the one hand, the lubrication oil flowing to the bearings 32 may cool the bearings 32, and on the other hand, the lubrication oil flowing to the bearings 32 may also lubricate the bearings 32.

In one embodiment of the present invention, the oil pump assembly 6 includes an oil pump 61 and an oil pump rotor shaft 62, the oil pump 61 being fixedly connected to the rear housing 21; the other end of the pump inlet channel 211 is connected with an oil inlet of the oil pump 61, and one end of the cold inlet channel 212 is connected with an oil outlet of the oil pump 61; the oil pump rotor shaft 62 is connected to the other end of the input shaft 31.

In practical applications, the oil pump assembly 6 may be composed of an oil pump 61 and an oil pump rotor shaft 62; wherein, the oil pump 61 can be a container with an oil outlet and an oil inlet; the oil pump 61 may be fixed to the rear housing 21; an oil pump rotor shaft 62 may be provided in the oil pump 61, and the oil pump rotor shaft 62 may be connected to the other end of the input shaft 31; specifically, the oil pump rotor shaft 62 may be connected to the other end of the input shaft 31 by a flat square.

Thus, when the input shaft 31 is rotated by the engine, the rotation of the oil pump rotor shaft 62 is driven, so that the lubrication oil of the first cavity 111 is pumped out and pumped to the oil cooling assembly 5, and further to the intake passage 214, the intake passage 213, and so on.

The other end of the oil inlet passage 211 may be connected to an oil inlet of the oil pump 61, so that the lubricating oil in the first cavity 111 is transferred to the oil pump 61 through the oil inlet; the lubricating oil entering the oil pump 61 enters the cooling channel 212 from the oil outlet of the oil pump 61 under the rotation of the oil pump rotor shaft 62, and is further pumped into the oil cooling assembly 5 for cooling; the cooled lubricant may then enter the first cavity 111 again through the inlet passage 214, the inlet passage 213, etc. to cool and lubricate the components in the generator 100.

In an embodiment of the present invention, the input shaft 31 has a hollow input shaft oil passage 311, and the rotor support 33 has a hollow rotor support oil passage 331; one end of the input shaft oil passage 311 is positioned at the joint of the oil pump rotor shaft 62 and the input shaft 31, and the other end of the input shaft oil passage 311 is communicated with one end of the rotor bracket oil passage 331; the other end of the rotor holder oil passage 331 is open.

In practical applications, the interior of the input shaft 31 may be provided with a hollow input shaft oil passage 311, and one end of the input shaft oil passage 311 is open and adjacent to the connection of the oil pump rotor shaft 62 and the input shaft 31; thus, the lubricating oil can enter the input shaft oil passage 311 through the joint to cool the input shaft 31 from the inside.

In addition, the inside of the rotor bracket 33 may also be provided with hollow rotor bracket oil passages 331, the rotor bracket oil passages 331 may be disposed in each spoke, and both ends of each rotor bracket oil passage 331 are opened, one end of the rotor bracket oil passage 331 may communicate with the other end of the input shaft oil passage 311, and therefore, the lubricating oil entering the input shaft oil passage 311 may flow into the rotor bracket oil passages 331 to cool the rotor bracket 33.

Further, the lubricating oil entering the rotor bracket oil passage 331 may flow out from the other end opening of the rotor bracket oil passage 331 and return to the bottom of the first cavity 111 under the rotation of the rotor bracket 33; then, the oil enters the oil pump 61 again from the pump-in passage 211, and enters the oil cooling assembly 5 for cooling by rotation of the oil pump rotor shaft 62; then, the cooled lubricating oil is pumped again to the inlet pipe passage 214, the inlet shaft passage 213, and the like to perform cooling and lubrication treatment on the components in the generator 100.

In an embodiment of the present invention, the generator 100 may further include a stator assembly 7, the stator assembly 7 including a silicon steel sheet 71 and a winding 72; the silicon steel sheet 71 is fixedly connected with the front housing assembly 1, and the winding 72 is inserted into the silicon steel sheet 71.

In practical applications, the stator in the generator 100 may gradually include the silicon steel sheets 71 and the windings 72; the silicon steel sheet 71 may be fixed to the front housing assembly 1, specifically, may be fixedly connected to the front housing 11; and the windings 72 may be inserted in the silicon steel sheet 71. The silicon steel sheet 71 may be formed by stacking a plurality of sheet metals, the winding 72 may be a plurality of U-shaped metal bars, and both ends of the plurality of U-shaped metal bars may extend out of the silicon steel sheet 71, respectively, and be connected to each other.

In the embodiment of the invention, the lubricating oil in the cooling oil stem part is sprayed out from the spray hole 223 under the action of pumping pressure and is attached to the silicon steel sheet 71 and the winding 72; the lubricating oil can then absorb the heat of the silicon steel sheet 71 and the winding 72 and flow back to the bottom of the first cavity 111 by gravity and be pumped back into the oil pump 61 by the pump passage 211.

In an embodiment of the present invention, the generator 100 further includes an electric control assembly 4, and the electric control assembly 4 includes a motor controller 41, an electric control water inlet pipe 42, and an electric control water outlet pipe 43; the motor controller 41 is connected with the stator assembly 7 to obtain electric energy generated by the stator assembly 7; the electric control water inlet pipe 42 and the electric control water outlet pipe 43 are connected with a whole vehicle water circulation system to perform cooling treatment on the motor controller 41.

In the embodiment of the present invention, the generator 100 may further include an electric control assembly 4, and the electric control assembly 4 may include a motor controller 41, an electric control water inlet pipe 42 and an electric control water outlet pipe 43; the motor controller 41 may be connected to the stator assembly 7 through a three-phase wire harness to receive the electric energy generated by the stator assembly 7, and perform inversion conversion on the electric energy to obtain direct current; the motor controller 41 may then transfer the dc power to other motors and/or battery usage.

The electric control water inlet pipe 42 and the electric control water outlet pipe 43 of the electric control assembly 4 can be connected with a whole vehicle water circulation system so as to perform cooling treatment on the motor controller 41.

As an example, the electric control water outlet pipe 43 is also connected with an oil cooling water inlet pipe 52, and the oil cooling water outlet pipe 53 is connected with the whole vehicle water circulation system.

In practical application, the electric control water outlet pipe 43 can be connected with the oil cooling water inlet pipe 52, and the oil cooling water outlet pipe 53 of the oil cooling assembly 5 can be connected with the whole vehicle water circulation system; thus, the water flowing out of the electric control water outlet pipe 43 can enter the oil cooler 51 through the oil cooling water inlet pipe 52 to cool down the lubricating oil in the oil cooler 51; then, the water can flow out from the oil cooling water outlet pipe 53, returns to the whole vehicle water circulation system, is cooled again, and enters the electric control assembly 4 through the electric control water inlet pipe 42.

As another example, the oil-cooled water inlet pipe 52 and the oil-cooled water outlet pipe 53 are connected to the entire vehicle water circulation system.

In another embodiment, the oil cooling water inlet pipe 52 and the oil cooling water outlet pipe 53 can also be directly connected with the whole vehicle water circulation system; thus, the cooled water in the whole water circulation system can enter the lubricating oil in the oil cooler 51 through the oil cooling water inlet pipe 52 for cooling treatment; then, the water can flow out from the oil cooling water outlet pipe 53 and return to the whole vehicle water circulation system to be cooled again, and then enter the electric control assembly 4 through the electric control water inlet pipe 42

The cooling process of the motor provided by the embodiment of the invention is as follows:

when the generator 100 is operated, the rotor assembly 3 obtains the power of the engine, and then drives the oil pump assembly 6 to pump the lubricating oil in the first cavity 111 into the cooling passage 212 through the pumping passage 211. The lubricating oil passing through the oil cooling assembly 5 will be cooled by heat exchange and then pumped into the inlet shaft passage 213 and the inlet tube passage 214.

After the lubricating oil in the shaft inlet passage 213 is injected into the second cavity 215, part of the lubricating oil flows into the bearing 32 through the gap between the rear housing 21 and the input shaft 31 for lubrication thereof, and the other part of the lubricating oil enters the input shaft oil passage 311 through the gap between the input shaft 31 and the flat side of the oil pump rotor shaft 62, then reaches the rotor bracket oil passage 331, cools the rotor 35 by heat conduction,

finally, the lubricant is thrown to the inner side of the winding 72 under the centrifugal action of the rotor assembly 3, and covers more surfaces of the winding 72, so as to further cool the winding 72.

The lubricating oil in the pipe inlet channel 214 passes through the cooling oil pipe root 221 of the cooling oil pipe 22 connected with the lubricating oil inlet channel, enters the cooling oil pipe stems 222, and is sprayed out from the spray holes 223, which are positioned at the upper half position of the generator 100, and the lubricating oil flows to the outer sides of the silicon steel sheets 71 and the windings 72 under the action of pumping pressure and gravity so as to cool the silicon steel sheets 71 and the windings 72.

The embodiment of the invention provides a generator, which can efficiently cool the whole generator through a pipeline in a rear shell assembly; the rotor and the stator are cooled in a spraying mode, the rotor is not required to be soaked in lubricating oil for cooling, the stirring to the lubricating oil during rotation of the rotor is avoided, and the peak power and the oil-electricity conversion efficiency of the motor are improved; and by delivering lubrication oil into the rotor assembly, lubrication may also be effected.

The embodiment of the invention also provides a range extender, which can be used for providing additional electric energy so as to enable the electric automobile to increase the driving mileage; the range extender provided by the embodiment of the invention can comprise an engine and the generator provided by the embodiment. The front shell of the generator can be fixedly connected with the engine, and the input shaft of the rotor assembly of the generator can be connected with the torque limiter of the engine, so that the input shaft rotates under the rotation of the engine, the whole rotor assembly is driven to rotate, and the generator obtains the power of the engine; the rotor assembly and stator assembly then cooperate to generate back emf, thereby converting the mechanical energy of the engine into electrical energy.

The embodiment of the invention also provides a vehicle, which can comprise the range extender.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.

The foregoing has outlined in detail a generator, a range extender and a vehicle, and the detailed description of the principles and embodiments of the present invention has been provided herein with the application of specific examples, the description of the examples above being merely intended to facilitate the understanding of the method of the invention and the core idea thereof; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.

Claims (13)

1. A generator, comprising: a front housing assembly, a rear housing assembly, an oil cooling assembly and an oil pump assembly;

the rear shell component comprises a rear shell, a cooling oil pipe, a pump inlet channel, a cooling inlet channel, a shaft inlet channel and a pipe inlet channel;

the oil cooling assembly comprises an oil cooler, an oil cooling water inlet pipe, an oil cooling water outlet pipe, an oil cooling oil inlet pipe and an oil cooling oil outlet pipe;

the front shell component and the rear shell are spliced into a first cavity; the rotor assembly and the stator assembly of the generator are positioned in the first cavity, and the oil pump assembly is connected with the rotor assembly;

one end of the pump inlet channel is connected with the first cavity, and the other end of the pump inlet channel is connected with an oil inlet of the oil pump assembly; one end of the cooling channel is connected with an oil outlet of the oil pump assembly, and the other end of the cooling channel is connected with the oil cooling inlet pipe; one end of the shaft inlet channel is connected with the oil cooling oil outlet pipe, and the other end of the shaft inlet channel is connected with the rotor assembly; one end of the pipe inlet channel is connected with the oil cooling outlet pipe, and the other end of the pipe inlet channel is connected with the cooling oil pipe;

the cooling oil pipe comprises a cooling oil pipe root and a plurality of cooling oil pipe stems connected with the cooling oil pipe root, and each cooling oil pipe stem is provided with a plurality of spray holes; the other end of the pipe inlet channel is connected with the root of the cooling oil pipe, and the plurality of cooling oil pipe stems are positioned in the first cavity;

the oil cooling water inlet pipe is connected with a water outlet pipe, and the oil cooling water outlet pipe is connected with a water inlet pipe.

2. The generator of claim 1, wherein the rotor assembly comprises an input shaft, bearings, a rotor support, bolts, and a rotor;

one end of the input shaft passes through the front shell assembly and is connected with an engine so as to acquire the power of the engine;

the rotor support is fixedly connected with the input shaft through the bolt, and the outer side of the rotor support is fixedly connected with the rotor;

the bearing is located on the input shaft.

3. The generator of claim 2, wherein the front housing assembly comprises a front housing and an oil seal;

the front shell is a barrel-shaped box body, the flange on one side of the front shell, which is not provided with an opening, is connected with the engine, and the flange on one side of the front shell, which is provided with the opening, is spliced with the rear shell to form a first cavity;

the oil seal is positioned at the center of one side of the front shell, which is not provided with an opening, and the input shaft extends out of the front shell through the opening filled with the oil seal to be connected with the engine.

4. A generator according to claim 3, wherein the head of the bolt faces the oil seal.

5. A generator according to claim 3, wherein the rear housing and the input shaft form a second cavity, and the other end of the input shaft passage is connected to the second cavity.

6. The generator of claim 2, wherein the oil pump assembly comprises an oil pump and an oil pump rotor shaft, the oil pump being fixedly connected to the rear housing;

the other end of the pump inlet channel is connected with an oil inlet of the oil pump, and one end of the cooling inlet channel is connected with an oil outlet of the oil pump;

the oil pump rotor shaft is connected with the other end of the input shaft.

7. The generator of claim 6 wherein the input shaft has a hollow input shaft oil passage therein and the rotor support has a hollow rotor support oil passage therein;

one end of the input shaft oil duct is positioned at the joint of the oil pump rotor shaft and the input shaft, and the other end of the input shaft oil duct is communicated with one end of the rotor bracket oil duct; the other end of the rotor support oil duct is open.

8. The generator of claim 1, further comprising: the stator assembly comprises silicon steel sheets and windings;

the silicon steel sheet is fixedly connected with the front shell assembly, and the winding is inserted into the silicon steel sheet.

9. The generator of claim 8, further comprising: the electric control assembly comprises a motor controller, an electric control water inlet pipe and an electric control water outlet pipe;

the motor controller is connected with the stator assembly to acquire electric energy generated by the stator assembly;

the electric control water inlet pipe and the electric control water outlet pipe are connected with a whole vehicle water circulation system so as to cool the motor controller.

10. The generator of claim 9, wherein the generator is configured to generate the power from the power source,

the electric control water outlet pipe is also connected with the oil cooling water inlet pipe, and the oil cooling water outlet pipe is connected with the whole vehicle water circulation system.

11. The generator of claim 1, wherein the oil cooled inlet pipe and the oil cooled outlet pipe are connected to a complete vehicle water circulation system.

12. A range extender comprising an engine and a generator as claimed in any one of claims 1 to 11.

13. A vehicle comprising the range extender of claim 12.