Automobile driving system

Abstract

The invention discloses an automobile driving system which comprises a driving shell assembly, a controller assembly and a transmission assembly, and the transmission assembly comprises an engine, a generator, a driving motor and a speed reducer; the driving shell assembly comprises a main shell, a front end cover, a rear end cover and an upper cover, the main shell comprises a controller cavity, a gear cavity, a driving motor cavity and a generator cavity, the driving motor cavity and the generator cavity are located on the same side, the gear cavity is located on the opposite sides of the driving motor cavity and the generator cavity, and the controller cavity is located above the generator cavity and the gear cavity; the upper cover covers the upper part of the controller cavity; the rear end cover covers the rear sides of the driving motor cavity and the generator cavity; the speed reducer is installed in the gear cavity, and the front end cover covers the front side of the gear cavity. The engine is located on the outer side of the driving shell assembly, and an input shaft of the engine penetrates into the front end cover and then is connected with the speed reducer. High integration of an automobile driving system is achieved, the overall structure is compact, and the occupied space is small.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular to an automobile driving system. Background Art

[0002] Existing hybrid vehicle drive systems usually include control modules, engines, drive motors, generators and reducers. Among them, the control module is the brain of the hybrid vehicle, responsible for monitoring and coordinating the work of various components to ensure the efficient and smooth operation of the system. The control module adjusts the power output in real time according to factors such as driving conditions, battery status, engine and motor performance. As a major power source for hybrid vehicles, the engine is responsible for burning fuel to generate power. Generator In some hybrid systems, the generator is driven by the engine to generate electricity to charge the battery or directly provide power to the drive motor. The drive motor uses electrical energy to drive the vehicle. In hybrid vehicles, it usually works in conjunction with the engine to provide additional power or completely replace the engine for driving. The reducer is usually located between the drive motor and the wheel to reduce the speed of the motor and increase the torque to drive the vehicle more efficiently.

[0003] With the development of hybrid vehicles, the requirements for the integration of drive systems are becoming increasingly higher. It is hoped that through high integration, the vehicle structure will be more compact, thereby improving fuel efficiency and performance; and simplifying the production and assembly process to reduce manufacturing costs. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a highly integrated automobile drive system.

[0005] The technical solution of the present invention provides an automobile drive system, including a drive housing assembly, a controller assembly and a transmission assembly, wherein the transmission assembly includes an engine, a generator, a drive motor and a reducer;

[0006] The drive housing assembly includes a main housing, a front cover, a rear cover and an upper cover, the main housing includes a controller cavity, a gear cavity, a drive motor cavity and a generator cavity, the drive motor cavity and the generator cavity are located on the same side, the gear cavity is located on the opposite side of the drive motor cavity and the generator cavity, and the controller cavity is located above the generator cavity and the gear cavity;

[0007] The controller assembly is installed in the controller cavity, and the upper cover covers the top of the controller cavity;

[0008] The drive motor is installed in the drive motor cavity, the generator is installed in the generator cavity, and the rear end cover covers the rear sides of the drive motor cavity and the generator cavity;

[0009] The reducer is installed in the gear chamber, and the front end cover covers the front side of the gear chamber;

[0010] The engine is located outside the drive housing assembly, and the engine input shaft is connected to the reducer after passing through the front end cover.

[0011] Furthermore, the transmission assembly also includes a speed increaser, an electromagnetic clutch and a direct drive gear, the speed increaser includes a speed increaser bearing, a first speed increaser gear and a second speed increaser gear, wherein the speed increaser bearing and the first speed increaser gear are coaxially connected to the generator, the second speed increaser gear is coaxially connected to the engine input shaft, the electromagnetic clutch and the direct drive gear, and the first speed increaser gear is meshed with the second speed increaser gear.

[0012] Furthermore, an oil pump, an oil cooler and a switch solenoid valve are installed in the main housing, the oil pump pumps the oil into the oil cooler, and the oil cooler cools the oil;

[0013] The main housing further comprises an oil distribution chamber, which is arranged in the main housing. The oil cooler delivers cooled oil to the oil distribution chamber. The oil distribution chamber comprises a first oil chamber and a second oil chamber. The first oil chamber is communicated with the drive motor chamber, and the second oil chamber is communicated with the generator chamber.

[0014] The switch solenoid valve is disposed between the first oil chamber and the second oil chamber. When the switch solenoid valve is opened, the oil flows from the first oil chamber into the second oil chamber.

[0015] Furthermore, it also includes a drive motor oil circuit, a reduction system oil circuit, a generator oil circuit and an increase system oil circuit. The first oil chamber connects the drive motor oil circuit and the reduction system oil circuit, and the second oil chamber connects the generator oil circuit and the increase system oil circuit.

[0016] Further, the controller assembly includes, from top to bottom, a domain control board, a PDM, a capacitor, a drive motor drive board, a drive motor IGBT, an integrated water channel, a generator IGBT and a drive control integrated board;

[0017] The capacitor and the integrated water channel are arranged side by side below the PDM, the drive motor IGBT is located above the integrated water channel, and the generator IGBT is located below the integrated water channel;

[0018] The drive motor drive board is located between the drive motor IGBT and the PDM, and the drive control integrated board is located below the generator IGBT and the capacitor.

[0019] Furthermore, the upper cover includes a small cover and a large cover, the domain control board is arranged between the small cover and the large cover, the small cover is located above the domain control board, and the large cover is located above the PDM.

[0020] Furthermore, a water cooling inlet pipe and a water cooling outlet pipe are provided in the main shell;

[0021] The PDM comprises a PDM water channel, the PDM water channel is connected in series with the integrated water channel, and the water-cooling inlet pipe and the water-cooling outlet pipe are connected to the PDM water channel.

[0022] Furthermore, the PDM water channel includes a capacitor cooling unit and a PDM cooling unit, and the capacitor cooling unit and the PDM cooling unit are connected in series.

[0023] Furthermore, the PDM is provided with a shell water inlet, a shell water outlet, an integrated water channel inlet and an integrated water channel outlet, the water cooling inlet pipe is connected to the shell water inlet, the integrated water channel inlet is connected to the inlet of the integrated water channel, the integrated water channel outlet is connected to the outlet of the integrated water channel, and the shell water outlet is connected to the water cooling outlet pipe.

[0024] Furthermore, the integrated water channel includes an upper water channel and a lower water channel, the upper water channel is used to cool the drive motor IGBT, and the lower water channel is used to cool the generator IGBT.

[0025] After adopting the above technical solution, the following beneficial effects are achieved:

[0026] The present invention realizes high integration of the engine, generator, drive motor, reducer, controller and drive assembly, so that the overall structure of the automobile drive system is compact and occupies little space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0028] Figure 1 is a perspective view of a vehicle drive system according to an embodiment of the present invention;

[0029] Figure 2 is a rear view of a vehicle drive system in one embodiment of the present invention with the rear end cover omitted;

[0030] Figure 3 is a three-dimensional diagram of a vehicle drive system in one embodiment of the present invention with the rear end cover omitted;

[0031] Figure 4is a three-dimensional diagram of a vehicle drive system in one embodiment of the present invention with a portion of the front end cover omitted;

[0032] Figure 5 is a three-dimensional diagram of a transmission assembly in one embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of an oil circuit system of an automobile drive system in one embodiment of the present invention;

[0034] Figure 7 is a schematic diagram of the flow direction of oil in the main housing through the first oil chamber in one embodiment of the present invention;

[0035] Figure 8 It is a partial enlarged view of the oil distribution chamber in one embodiment of the present invention;

[0036] Fig. 9 is a schematic diagram of the inner side of the rear end cover in one embodiment of the present invention;

[0037] Fig.10 is a schematic diagram of the outer side of the rear end cover in one embodiment of the present invention;

[0038] Fig.11 is a three-dimensional diagram of a rear end cover in one embodiment of the present invention;

[0039] Fig.12 is a cross-sectional view of a driving motor in one embodiment of the present invention;

[0040] Fig.13 is a schematic diagram of a stator cooling branch of a drive motor in one embodiment of the present invention;

[0041] Fig.14 is a partial enlarged view of a driving motor cavity in one embodiment of the present invention;

[0042] Fig.15 is a schematic diagram of a gear chamber in one embodiment of the present invention;

[0043] Fig.16 is a schematic diagram of the inner side of the front end cover in one embodiment of the present invention;

[0044] Fig.17 is a schematic diagram of the outer side surface of the front end cover in one embodiment of the present invention;

[0045] Fig.18 It is a partial enlarged view of the bearing groove of the driving motor in one embodiment of the present invention;

[0046] Fig.19 is a three-dimensional view of a front end cover in one embodiment of the present invention;

[0047] Fig. 20 is a schematic diagram of a sixth oil passage and a seventh oil passage in one embodiment of the present invention;

[0048] Fig.21 is a partial enlarged view of a differential bearing groove in one embodiment of the present invention;

[0049] Fig. 22 is a schematic diagram of the flow direction of oil in the main housing through the second oil chamber in one embodiment of the present invention;

[0050] Fig.23 is a schematic diagram of a generator oil circuit in one embodiment of the present invention;

[0051] Fig.24 is a schematic diagram of an eighth oil passage located in the second annular oil passage in one embodiment of the present invention;

[0052] Fig.25 is a schematic diagram of an eighth oil passage located in the main housing in one embodiment of the present invention;

[0053] Fig.26 is a schematic diagram of an eighth oil passage located in a gear chamber in an embodiment of the present invention;

[0054] Fig. 27 is a schematic diagram of an oil pipe in a gear cavity in one embodiment of the present invention;

[0055] Fig.28 is a schematic diagram of a ninth oil passage in the main housing in one embodiment of the present invention;

[0056] Fig.29 is a schematic diagram of a ninth oil passage in an engine input bearing installation position in one embodiment of the present invention;

[0057] Fig.30 sectional view of an engine input shaft in one embodiment of the present invention Figure 1 ;

[0058] Fig.31 sectional view of an engine input shaft in one embodiment of the present invention Figure 2 ;

[0059] Fig.32 is an exploded diagram of a vehicle drive system in one embodiment of the present invention;

[0060] Fig.33 is a three-dimensional diagram of a controller assembly in one embodiment of the present invention;

[0061] Fig.34 yes Fig.33 Exploded diagram of

[0062] Fig.35 is a top view of the main housing in one embodiment of the present invention;

[0063] Fig.36 is a cross section of a PDM in one embodiment of the present invention Figure 1 ;

[0064] Fig.37 is a cross section of a PDM in one embodiment of the present invention Figure 2 ;

[0065] Fig.38 is a three-dimensional diagram of an integrated waterway in one embodiment of the present invention;

[0066] Fig.39 is a longitudinal cross-sectional view of an integrated water channel in one embodiment of the present invention;

[0067] Fig.40 is a schematic diagram of a PDM, an integrated water channel and a cooling circuit in a main housing in one embodiment of the present invention;

[0068] Fig.41 is an exploded view of a drive assembly in another embodiment of the present invention;

[0069] Fig.42 It is a schematic diagram of a capacitor, an integrated water channel and an inverter three-phase terminal block in another embodiment of the present invention.

[0070] Reference table of reference numerals:

[0071] Driving motor 10, generator 20, speed reducer 30, speed increaser 40, first hollow channel 101, intermediate shaft system 301, differential 302, speed increaser bearing 401, speed increaser gear 402, engine input shaft 501, electromagnetic clutch 502, needle bearing 503, direct drive gear 504, second hollow channel 505, first branch oil passage 5051, second branch oil passage 5052;

[0072] Oil pump 1, oil cooler 2;

[0073] Drive housing assembly 70:

[0074] Main housing 3: distribution oil chamber 31, drive motor chamber 32, generator chamber 33, gear chamber 34, third oil passage 35, ninth oil passage 36, controller chamber 37, water cooling water inlet pipe 38, water cooling water outlet pipe 39, first oil chamber 311, second oil chamber 312, second oil hole 321, first annular oil passage 322, third oil hole 331, second annular oil passage 332, eighth oil passage 333, notch 340, drive motor input bearing mounting position 341, intermediate bearing mounting position 342, differential bearing mounting position 343, engine input bearing mounting position 344, generator bearing mounting position 345, drive motor oil return groove 346, oil blocking inclined surface 347, second arc-shaped flange 348, second boss 349;

[0075] Front end cover 4: differential bearing groove 41, drive motor bearing groove 42, intermediate bearing groove 43, engine input bearing groove 44, fourth oil passage 45, fifth oil passage 46, sixth oil passage 47, seventh oil passage 48, first arc-shaped flange 49, bearing lubrication oil guide groove 471, first boss 490;

[0076] Rear end cover 5: first oil hole 51, first oil passage 52, second oil passage 53, drive motor cover 54, generator cover 55;

[0077] Switch solenoid valve 6, oil pipe 7;

[0078] Upper cover 9: small cover 91, large cover 92;

[0079] Controller assembly 60:

[0080] Domain control board 61: cable 611;

[0081] PDM62: capacitor cooling unit 621, PDM cooling unit 622, shell water inlet 623, shell water outlet 624, integrated water channel inlet 625, integrated water channel outlet 626;

[0082] Capacitor 63: shielding plate 631;

[0083] Driving motor driving board 64: driving motor three-phase wiring socket 641;

[0084] Drive motor IGBT65;

[0085] Integrated water channel 66: upper water channel 661, lower water channel 662, water channel water inlet 663, water channel water outlet 664, upper row inverter three-phase wiring socket 665, lower row inverter three-phase wiring socket 666;

[0086] Generator IGBT67;

[0087] Drive control integrated board 68: generator three-phase terminal block 681; DETAILED DESCRIPTION

[0088] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0089] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a variety of structural modes and implementation modes that can be replaced by those skilled in the art can be replaced with each other. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the invention.

[0090] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0091] In some embodiments of the present invention, Figure 1-Figure 5 As shown, the automobile drive system includes a drive housing assembly 70, a controller assembly 60 and a transmission assembly, and the transmission assembly includes an engine, a generator 20, a drive motor 10 and a reducer 30;

[0092] The drive housing assembly 70 includes a main housing 3, a front cover 4, a rear cover 5 and an upper cover 9. The main housing 3 includes a controller cavity 37, a gear cavity 34, a drive motor cavity 32 and a generator cavity 33. The drive motor cavity 32 and the generator cavity 33 are located on the same side, the gear cavity 34 is located on the opposite side of the drive motor cavity 32 and the generator cavity 33, and the controller cavity 37 is located above the generator cavity 33 and the gear cavity 34.

[0093] The controller assembly 60 is installed in the controller cavity 37, and the upper cover 9 covers the top of the controller cavity 37;

[0094] The drive motor 10 is installed in the drive motor cavity 32, the generator 20 is installed in the generator cavity 33, and the rear end cover 5 covers the rear sides of the drive motor cavity 32 and the generator cavity 33;

[0095] The reducer 30 is installed in the gear cavity 34, and the front end cover 4 covers the front side of the gear cavity 34;

[0096] The engine is located outside the drive housing assembly 70 , and the engine input shaft 501 penetrates the front end cover 4 and is connected to the reducer 30 .

[0097] Specifically, Figure 5 As shown, the transmission mechanism of the drive assembly includes a drive motor 10 (see Figure 2 ), generator 20, reducer 30 and speed increaser 40. Figure 5 The driving motor 10 is omitted in the figure, and the driving motor 10 is actually connected to the reducer 30, and the generator 20 is connected to the speed increaser 40. The reducer 30 includes an intermediate shaft system 301 and a differential 302. The driving motor 10 transmits power to the differential 302 through the intermediate shaft system 301, and the differential 302 is used to connect with the external wheel shaft to transmit power to the wheel shaft.

[0098] like Figure 1 As shown, the rear end cover 5 is used to cover the rear side of the main housing 3. Figure 2-Figure 3As shown, the rear side of the main housing 3 includes a drive motor cavity 32 and a generator cavity 33 . The drive motor cavity 32 is used to install the drive motor 10 , and the generator cavity 33 is used to install the generator 20 .

[0099] Figure 4 FIG. 4 is a partial cross-sectional view of the front end cover 4, exposing a portion of the gear cavity 34. Fig.15 As shown, the front side of the main housing 3 includes a gear chamber 34, and the gear chamber 34 is used to install the reducer 30 and the speed increaser 40. Fig.16 As shown, the front end cover 4 is used to cover the front side of the main housing 3.

[0100] In this embodiment, by setting up the drive housing assembly, a high degree of integration of the engine, generator, drive motor, reducer, controller and drive assembly is achieved, making the overall structure of the automobile drive system compact and occupying a small space.

[0101] Furthermore, the transmission assembly also includes a speed increaser 40, an electromagnetic clutch 502 and a direct drive gear 504, the speed increaser 40 includes a speed increaser bearing 401, a first speed increaser gear and a second speed increaser gear, wherein the speed increaser bearing 401 and the first speed increaser gear are coaxially connected to the generator, the second speed increaser gear is coaxially connected to the engine input shaft 501, the electromagnetic clutch 502 and the direct drive gear 504, and the first speed increaser gear is meshed with the second speed increaser gear.

[0102] Specifically, Figure 5 As shown, the speed increaser 40 includes a speed increaser bearing 401 and a speed increaser gear 402, wherein the speed increaser bearing 401 and one speed increaser gear 402 are coaxially connected to the generator 20, and the other speed increaser gear 402 is coaxially connected to the engine input shaft 501, the electromagnetic clutch 502 and the direct drive gear 504, and the two speed increaser gears 402 are meshed. The engine (not shown) can drive the generator 20 to generate electricity through the engine input shaft 501 and the speed increaser gear 402. In addition, the direct drive gear 504 is transmission-connected to the intermediate shaft system 301, and the engine can directly drive the wheel shaft through the engine input shaft 501, the direct drive gear 504, the intermediate shaft system 301 and the differential 302.

[0103] Furthermore, an oil pump 1, an oil cooler 2 and a switch solenoid valve 6 are installed in the main housing. The oil pump 1 pumps the oil into the oil cooler 2, and the oil cooler 2 cools the oil.

[0104] The main housing 3 further includes an oil distribution chamber 31, which is disposed in the main housing 3. The oil cooler 2 delivers cooled oil to the oil distribution chamber 31. The oil distribution chamber 31 includes a first oil chamber 311 and a second oil chamber 312. The first oil chamber 311 is communicated with the drive motor chamber 32, and the second oil chamber 312 is communicated with the generator chamber 33.

[0105] The switch solenoid valve 6 is disposed between the first oil chamber 311 and the second oil chamber 312 . When the switch solenoid valve 6 is opened, oil flows from the first oil chamber 311 into the second oil chamber 312 .

[0106] Furthermore, it also includes a drive motor oil circuit, a reduction system oil circuit, a generator oil circuit and a speed increasing system oil circuit. The first oil chamber 311 connects the drive motor oil circuit and the reduction system oil circuit, and the second oil chamber 312 connects the generator oil circuit and the speed increasing system oil circuit.

[0107] Specifically, Figure 1 As shown, the drive assembly includes a main housing 3 and a rear end cover 5, and the rear end cover 5 is provided on the rear side of the main housing 3. An oil pump 1 and an oil cooler 2 are installed on the main housing 3. The oil pump 1 is used to pump oil into the oil cooler 2, and the oil cooler 2 is used to cool the oil. The oil cooler 2 performs heat exchange by water cooling.

[0108] like Figure 2 As shown, Figure 2 The rear end cover 5 is omitted, and a distribution oil chamber 31 is provided in the main housing 3. The distribution oil chamber 31 is connected to the oil cooler 2, and the oil cooler 2 delivers oil to the distribution oil chamber 31. The distribution oil chamber 31 includes a first oil chamber 311 and a second oil chamber 312. The first oil chamber 311 is connected to the drive motor oil circuit and the reduction system oil circuit. Figure 2 The middle drive motor 10 is located on the right side of the first oil chamber 311, the drive motor oil circuit is arranged in the drive motor chamber 32 of the main housing 3, and the reduction system oil circuit is arranged in the gear chamber 34 on the front side of the main housing 3 (see Fig.15 The second oil chamber 312 is connected to the generator oil circuit and the speed increasing system oil circuit. Figure 2 The middle generator 20 is located on the left side of the second oil chamber 312, the generator oil circuit is arranged in the generator chamber 33 of the main housing 3, and the speed increasing system oil circuit is arranged in the gear chamber 34 on the front side of the main housing 3 (see Fig.15 )middle.

[0109] The first oil chamber 311 is not controlled by the switch solenoid valve 6, and the first oil chamber 311 maintains continuous cooling and lubrication of the drive motor oil circuit and the deceleration system oil circuit. Figure 7 and Figure 8 As shown, the black arrow indicates the flow direction of the oil. The oil is pumped from the oil pump 1 into the oil cooler 2, then enters the first oil chamber 311 from the oil cooler 2, and then enters the drive motor oil circuit and the reduction system oil circuit from the first oil chamber 311.

[0110] like Fig. 22 As shown, the black arrow indicates the flow direction of the oil. The oil is pumped from the oil pump 1 into the oil cooler 2, then enters the second oil chamber 312 from the oil cooler 2, and then enters the generator oil circuit and the speed increasing system oil circuit from the second oil chamber 312.

[0111] like Figure 2 As shown, a switch solenoid valve 6 is installed between the first oil chamber 311 and the second oil chamber 312 , and the switch solenoid valve 6 is used to control the on-off between the first oil chamber 311 and the second oil chamber 312 .

[0112] like Figure 6 As shown, the control current is used to control the opening or closing of the switch solenoid valve 6. When the switch solenoid valve 6 is opened, the oil flows from the first oil chamber 311 into the second oil chamber 312, and then enters the generator oil circuit and the speed increasing system oil circuit to cool the stator and the speed increasing gear 40 of the generator 20. When the switch solenoid valve 6 is closed, the oil circuit between the first oil chamber 311 and the second oil chamber 312 is disconnected, and the oil does not enter the generator oil circuit and the speed increasing system oil circuit. The switch solenoid valve 6 is closed, usually in the pure electric mode of the vehicle, at which time the generator 20 does not work, and the cooling and lubrication of the generator oil circuit and the speed increasing system oil circuit are stopped, thereby reducing the flow resistance of the oil circuit system, reducing the working power of the oil pump, and improving the working efficiency of the lubrication and cooling system.

[0113] Furthermore, if Figure 9-12 As shown, the drive motor oil circuit includes a drive motor rotor cooling branch, and the drive motor rotor cooling branch includes a first oil hole 51, a first oil channel 52 and a second oil channel 53. The first oil hole 51, the first oil channel 52 and the second oil channel 53 are all arranged on the rear end cover 5. The first oil hole 51 is connected to the first oil chamber 311, one end of the first oil channel 52 is connected to the first oil hole 51, one end of the second oil channel 53 is connected to the first oil channel 52, and the other end is connected to the first hollow channel 101 of the rotor shaft of the drive motor 10.

[0114] Specifically, Fig. 9 As shown, the rear end cover 5 includes a drive motor cover 54 and a generator cover 55. The drive motor cover 54 covers the outside of the drive motor 10 and is arranged centrally with the drive motor 10. The generator cover 55 covers the outside of the generator 20 and is arranged centrally with the generator 20. A first oil hole 51 is provided on the inner side surface of the rear end cover 5, and the first oil hole 51 is communicated with the first oil chamber 311.

[0115] like Fig.10 As shown, the first oil passage 52 and the second oil passage 53 are both arranged inside the rear end cover 5, wherein the first oil hole 51 is directly connected to one end of the first oil passage 52, the first oil passage 52 extends obliquely downward, and the other end of the first oil passage 52 is blocked. Fig. 9 As shown, the lower end of the second oil passage 53 is connected to the first oil passage 52 , and the upper end leads to the center of the drive motor cover 54 , and the center of the drive motor cover 54 just corresponds to the rotor shaft of the drive motor 10 .

[0116] like Fig.12As shown, the upper end of the second oil passage 53 is connected to the first hollow passage 101 of the rotor shaft of the drive motor 10, and can bring oil into the rotor shaft of the drive motor 10. The rotor shaft is provided with a plurality of radial oil holes (not shown). When the rotor shaft rotates, the oil enters the radial oil holes from the first hollow passage 101, and then enters the rotor from the radial oil holes to cool the rotor. When the rotor rotates, the oil is thrown toward the stator winding to cool the stator winding. The oil at the stator winding drips onto the rear bearing of the motor to lubricate the rear bearing of the motor. Fig.10 The direction of the black arrow in the figure indicates the flow path of the oil.

[0117] Furthermore, if Fig.13 As shown, the drive motor oil circuit also includes a drive motor stator cooling branch, and the drive motor stator cooling branch includes a second oil hole 321 and a first annular oil channel 322. The second oil hole 321 connects the first oil chamber 311 and the first annular oil channel 322. The first annular oil channel 322 is arranged on the inner wall of the drive motor chamber 32.

[0118] Among them, the second oil hole 321 and the first annular oil passage 322 are both arranged inside the main housing 3, the second oil hole 321 connects the first oil chamber 311 and the first annular oil passage 322, and the first annular oil passage 322 is a groove opened in a full circle on the inner wall of the drive motor chamber 32. The oil flows from the first oil chamber 311 into the second oil hole 321, then flows from the second oil hole 321 into the first annular oil passage 322, and then flows from the first annular oil passage 322 around the inner wall of the entire drive motor chamber 32. The first annular oil passage 322 corresponds to the stator of the drive motor 10, so the oil flows into the stator of the drive motor 10 to cool the stator.

[0119] Therefore, both the rotor and the stator of the drive motor 10 are cooled by the drive motor rotor cooling branch and the drive motor stator cooling branch.

[0120] Furthermore, if Figure 14-17 As shown, the front end cover 4 includes a differential bearing slot 41, a drive motor bearing slot 42, an intermediate bearing slot 43 and an engine input bearing slot 44;

[0121] The oil circuit of the reduction system includes a third oil passage 35, a fourth oil passage 45, a fifth oil passage 46 and a sixth oil passage 47. The third oil passage 35 is arranged in the main housing 3. One end of the third oil passage 35 is connected to the first annular oil passage 322 and extends into the gear chamber 34. The fourth oil passage 45, the fifth oil passage 46 and the sixth oil passage 47 are all arranged in the front end cover 4. The other end of the third oil passage 35 is directly connected to the fourth oil passage 45 and the fifth oil passage 46. The fourth oil passage 45 leads to the differential bearing groove 41, the fifth oil passage 46 leads to the drive motor bearing groove 42, one end of the sixth oil passage 47 is connected to the fifth oil passage 46, and the other end leads to the engine input bearing groove 44.

[0122] Specifically, Fig.14 As shown, one end of the third oil passage 35 is disposed in the first annular oil passage 322 , and the oil in the first annular oil passage 322 can flow into the third oil passage 35 .

[0123] like Fig.15 As shown, the third oil passage 35 passes through the driving motor chamber 32 , and the other end of the third oil passage 35 extends to the edge of the gear chamber 34 on the front side of the main housing 3 .

[0124] like Fig.16 As shown, one end opening of the fourth oil passage 45 is located on the inner side of the front end cover 4 and is just butted against the other end of the third oil passage 35 .

[0125] like Fig.17 As shown, the fourth oil passage 45, the fifth oil passage 46 and the sixth oil passage 47 are all arranged inside the front end cover 4, and the fourth oil passage 45 overlaps with one end of the fifth oil passage 46, so the other end of the third oil passage 35 is directly connected to the fourth oil passage 45 and the fifth oil passage 46, and the fifth oil passage 46 is connected to the sixth oil passage 47. Among them, the fourth oil passage 45 leads to the differential bearing groove 41, the fifth oil passage 46 leads to the drive motor bearing groove 42, and the sixth oil passage 47 leads to the engine input bearing groove 44. Fig.15 The black arrow in the middle indicates the flow direction of the oil. The fourth oil passage 45 , the fifth oil passage 46 and the sixth oil passage 47 are actually all arranged inside the front end cover 4 , and only a partial outline can be seen from the outer side of the front end cover 4 .

[0126] like Fig.19 As shown, a differential bearing slot 41 , a drive motor bearing slot 42 , an intermediate bearing slot 43 and an engine input bearing slot 44 are provided on the inner side surface of the front end cover 4 .

[0127] like Fig.18 As shown, the other end of the fifth oil passage 46 leads to the drive motor bearing groove 42 , so as to cool the bearing of the drive motor 10 .

[0128] like Fig. 20 As shown, the other end of the sixth oil passage 47 leads to the engine input bearing groove 44, which can cool the bearing of the engine input shaft 501. In addition, the oil outlet on the engine input bearing groove 44 of the sixth oil passage 47 is opened in the upper right area, so that the oil can be sprayed to the left to cool the left half of the coil of the electromagnetic clutch 502, and can also be cooled to the right along the coil surface under the action of gravity.

[0129] like Fig. 20 As shown, the sixth oil passage 47 is provided with a bearing lubrication oil guide groove 471 radially downward, which can guide oil into the bearing for lubrication.

[0130] like Fig.21 As shown, the other end of the fourth oil passage 45 leads to the differential bearing groove 41 , so as to cool the bearing of the transmission 30 .

[0131] Furthermore, if Fig.19 and Fig. 20 As shown, the reduction system oil circuit also includes a seventh oil passage 48 , which connects the drive motor bearing groove 42 with the middle bearing groove 43 , and the drive motor bearing groove 42 is located above the middle bearing groove 43 .

[0132] Specifically, Fig.19 As shown, one end of the seventh oil passage 48 is disposed at the lower portion of the drive motor bearing groove 42 .

[0133] like Fig. 20 As shown, the seventh oil passage 48 connects the drive motor bearing groove 42 and the intermediate bearing groove 43, and the other end of the seventh oil passage 48 leads to the intermediate bearing groove 43. The oil in the drive motor bearing groove 42 can be introduced into the intermediate bearing groove 43 to cool the bearing of the intermediate shaft system 301.

[0134] Therefore, the various bearings mounted on the front end cover 4 can be cooled and lubricated by arranging the oil circuit of the speed reduction system.

[0135] Furthermore, if Figure 22-Figure 23 As shown, the generator oil circuit includes a third oil hole 331 and a second annular oil passage 332 . The third oil hole 331 connects the second oil chamber 312 with the second annular oil passage 332 . The second annular oil passage 332 is arranged on a circle of the inner wall of the generator chamber 33 .

[0136] Specifically, Fig. 22 The black arrow in the figure indicates the flow direction of the oil. The oil flows from the oil pump 1 into the oil cooler 2, and then flows from the oil cooler 2 into the first oil chamber 311. When the switch solenoid valve 6 is turned on, the oil flows from the first oil chamber 311 into the second oil chamber 312.

[0137] like Fig.23 As shown, the third oil hole 331 communicates with the second oil chamber 312 and the second annular oil passage 332, and the second annular oil passage 332 is provided in an annular groove of a full circle on the inner wall of the generator chamber 33. The second annular oil passage 332 corresponds to the stator of the generator 20, so the oil flows from the second annular oil passage 332 into the stator of the generator 20 to cool the stator.

[0138] Furthermore, if Figure 24-Figure 27As shown, the gear cavity 34 includes a drive motor input bearing mounting position 341, an intermediate bearing mounting position 342, a differential bearing mounting position 343, an engine input bearing mounting position 344 and a generator bearing mounting position 345, a speed increasing bearing 401 is mounted at the generator bearing mounting position 345, and a speed increasing gear 402 is mounted on the generator bearing mounting position 345 and the engine input bearing mounting position 344;

[0139] The speed increasing system oil circuit includes an eighth oil channel 333 and an oil pipe 7. One end of the eighth oil channel 333 is connected to the second annular oil channel 332. The eighth oil channel 333 extends from the generator chamber 33 to the gear chamber 34. The other end of the eighth oil channel 333 is located above the engine input bearing mounting position 344 and is connected to the oil pipe 7. The oil pipe 7 is provided with a plurality of oil spray holes, which spray oil onto the gear surface of the speed increasing gear 402 and the speed increasing bearing 401.

[0140] Specifically, Fig.24 As shown, one end of the eighth oil passage 333 is in communication with the second annular oil passage 332 .

[0141] like Fig.25 As shown, the eighth oil passage 333 passes through the generator chamber 33 and then extends into the gear chamber 34 .

[0142] like Fig.26 As shown, the other end of the eighth oil passage 333 passes through the generator cavity 33 and is located above the engine input bearing mounting position 344 .

[0143] Fig.26 The middle gear cavity 34 includes a drive motor input bearing mounting position 341, an intermediate bearing mounting position 342, a differential bearing mounting position 343, an engine input bearing mounting position 344 and a generator bearing mounting position 345. A speed-increasing bearing 401 is installed at the generator bearing mounting position 345, and a speed-increasing gear 402 is installed on the generator bearing mounting position 345 and the engine input bearing mounting position 344.

[0144] like Figure 5 As shown, the speed increasing bearing 401 at the generator bearing installation position 345 is coaxially connected with the speed increasing gear 402 , and the speed increasing gear 402 at the generator bearing installation position 345 is meshed with the speed increasing gear 402 on the engine input bearing installation position 344 .

[0145] like Fig. 27 As shown, the other end of the eighth oil passage 333 is connected to the oil pipe 7, and a plurality of oil spray holes (not shown) are provided on the oil pipe 7, and the oil spray holes spray oil to the gear surface of the speed-increasing gear 402 and the speed-increasing bearing 401, and the oil can cool and lubricate the speed-increasing gear 402 and the speed-increasing bearing 401. Therefore, the gears and bearings of the speed-increasing gear can be cooled by setting the speed-increasing system oil circuit.

[0146] Furthermore, if Fig.26 As shown, a drive motor oil return groove 346 is also provided on one side of the intermediate bearing mounting position 342 in the gear cavity 34. The drive motor oil return groove 346 is connected to the drive motor cavity 32. An oil baffle slope 347 is provided below the drive motor oil return groove 346. The oil baffle slope 347 extends to the bottom of the intermediate bearing mounting position 342.

[0147] Since the drive motor oil return groove 346 is connected to the drive motor cavity 32, the oil enters the gear cavity 34 from the drive motor cavity 32 through the drive motor oil return groove 346. The oil baffle slope 347 is a straight surface arranged below the drive motor oil return groove 346, extending from the side wall of the gear cavity 34 to a position close to the engine input bearing mounting position 344. The oil flows from the drive motor oil return groove 346 to the oil baffle slope 347. Since the oil baffle slope 347 is located below the intermediate bearing mounting position 342, when the intermediate shaft gear installed below the intermediate bearing mounting position 342 rotates, the oil is stirred and brought to the tooth surface of the intermediate shaft gear to cool and lubricate the intermediate shaft gear.

[0148] Furthermore, if Fig.16 and Fig.26 As shown, an oil storage chamber is provided at the bottom of the gear chamber 34, which is composed of a first arc-shaped flange 49 on the front end cover 4 and a second arc-shaped flange 348 on the gear chamber 34. The oil storage chamber is connected to the oil pump 1, and the oil pump 1 can pump the oil in the oil storage chamber into the oil cooler 2. The upper concave surface formed by the second arc-shaped flange 348 and the first arc-shaped flange 49 can store part of the gearbox oil to lubricate the tooth surface of the engine direct drive gear 504.

[0149] like Fig.16 As shown, the front end cover 4 is also provided with a first boss 490. Fig.24 As shown, a second boss 349 is provided in the gear cavity 34, and the first boss 490 and the second boss 349 are both arranged in the oil storage cavity to reduce the volume of the oil storage cavity, thereby ensuring that there is sufficient liquid level height for the oil pump 1 to absorb oil when a low amount of oil is added.

[0150] like Fig.26 As shown, the second arc-shaped flange 348 is provided with a notch 340 at one end close to the differential bearing mounting position 343. The notch 340 ensures that the oil flows into the oil storage chamber and returns to the oil pump 1 to achieve circulation.

[0151] Furthermore, if Figure 28-30As shown, it also includes an engine input shaft lubricating oil circuit, which includes a ninth oil passage 36. The ninth oil passage 36 is directly connected to the oil pump 1. The ninth oil passage 36 leads to the engine input bearing mounting position 344 of the gear chamber 34 and is connected to the second hollow channel 505 of the engine input shaft 501.

[0152] Specifically, Fig.28 As shown, the main housing 3 is also provided with a ninth oil passage 36, which is directly connected to the oil pump 1 without passing through the oil cooler 2 and the distribution chamber 31. One end of the ninth oil passage 36 is located at the rear side of the main housing 3, as shown in FIG. Fig. 27 As shown, the other end of the ninth oil passage 36 extends to the front side of the main housing 3 and is located at the engine input bearing mounting position 344 , which corresponds to the engine input shaft 501 .

[0153] like Fig.30 As shown, the ninth oil passage 36 enters the second hollow passage 505 of the engine input shaft 501 from the engine input bearing mounting position 344 , and the oil enters the second hollow passage 505 to lubricate the bearing mounted on the engine input shaft 501 .

[0154] Since the ninth oil passage 36 does not pass through the oil cooler 2 and the distribution chamber 31, and directly enters the second hollow passage 505 from the oil pump 1, the oil is not cooled and only serves as lubrication. In addition, the ninth oil passage 36 is not controlled by the switch control valve 6, and can continuously provide oil lubrication.

[0155] Furthermore, if Fig.31 As shown, the electromagnetic clutch push ring and needle bearing 503 of the electromagnetic clutch 502 are installed on the engine input shaft 501, and the first branch oil channel 5051 and the second branch oil channel 5052 are radially provided on the second hollow channel 505. The first branch oil channel 5051 leads to the electromagnetic clutch push ring, and the second branch oil channel 5052 leads to the needle bearing 503, so that the electromagnetic clutch push ring and the needle bearing 503 can be lubricated.

[0156] In the present invention, the generator oil circuit is controlled by switching the electromagnetic valve. When the generator is not working, the flow resistance of the oil circuit system is reduced, the working power of the oil pump is reduced, and the working efficiency of the lubrication and cooling system is improved. The present invention also cools the stator and rotor of the drive motor through the drive motor oil circuit; cools the stator of the generator through the generator oil circuit; lubricates the bearings of the reducer through the reduction system oil circuit; and lubricates the gears and bearings of the speed increaser through the speed increase system oil circuit. The present invention also lubricates the bearings and electromagnetic clutch push ring installed on the engine input shaft through the ninth oil channel.

[0157] In some embodiments of the present invention, Figure 32-Figure 34As shown, the controller assembly includes, from top to bottom, a domain control board 61, a PDM 62, a capacitor 63, a drive motor drive board 64, a drive motor IGBT 65, an integrated water channel 66, a generator IGBT 67 and a drive control integrated board 68;

[0158] The capacitor 63 and the integrated water channel 66 are arranged side by side below the PDM 62 , the drive motor IGBT 65 is located above the integrated water channel 66 , and the generator IGBT 67 is located below the integrated water channel 66 ;

[0159] The drive motor drive board 64 is located between the drive motor IGBT 65 and the PDM 62 , and the drive control integrated board 68 is located below the generator IGBT 67 and the capacitor 63 .

[0160] Specifically, the domain control board 61 is located above the PDM 62. The domain control board 61 integrates the vehicle controller VCU, the high-voltage battery management system HBMS, the heat pump air conditioning control HVAC, the cabin thermal management TMS, the drive motor control MCU, the charging protocol conversion EVCC, the low-voltage battery management LBMS, the drive anti-skid system dTCS and the high-voltage reverse pre-charging function. The domain control board 61 is connected to the drive motor drive board 64 through the cable 611.

[0161] As a part of the electric vehicle power bus system, PDM62 is used for power conversion, stability control and temperature management of the electric vehicle power system.

[0162] The capacitor 63 is located below the PDM 62 and is also located on the side of the drive motor drive board 64 , the drive motor IGBT 65 , the integrated water channel 66 and the generator IGBT 67 .

[0163] The drive motor driving board 64 serves as a separate drive motor driving board and is located above the drive motor IGBT 65 .

[0164] The drive motor IGBT65 is directly located above the integrated water channel 66 , and the integrated water channel 66 can cool the drive motor IGBT65 .

[0165] The generator IGBT 67 is directly located below the integrated water channel 66 , and the integrated water channel 66 can cool the generator IGBT 67 at the same time.

[0166] The drive control integrated board 68 is located at the bottom, and the drive control integrated board 68 integrates the control functions of the generator drive control, oil pump, electromagnetic clutch and switch electromagnetic valve.

[0167] The driving motor IGBT65 is connected to the driving motor (not shown) via the driving motor three-phase terminal block 641 , and the generator IGBT67 is connected to the generator (not shown) via the generator three-phase terminal block 681 .

[0168] In this embodiment, the domain control board 61, PDM62, capacitor 63, drive motor drive board 64, drive motor IGBT65, integrated water channel 66, generator IGBT67 and drive control integrated board 68 are integrated into the controller assembly, realizing a high degree of integration of the controller. The integrated water channel 66 is located between the drive motor IGBT65 and the generator IGBT67, and can cool the drive motor IGBT65 and the generator IGBT67 at the same time, thereby improving the cooling efficiency of the controller assembly.

[0169] Preferably, if Fig.34 As shown, a shielding plate 631 is further provided between the capacitor 63 and the drive control integrated board 68 .

[0170] Furthermore, if Fig.34 As shown, it also includes an upper cover 9, which includes a small cover 91 and a large cover 92. The domain control board 61 is arranged between the small cover 91 and the large cover 92. The small cover 91 is located above the domain control board 61, and the large cover 92 is located above the PDM 62.

[0171] Among them, the large cover 92 is located between the domain control board 61 and the PDM 62. The domain control board 61 and the PDM 62 share the large cover 92, which can reduce the Z-direction (height direction) size of the controller assembly.

[0172] The area of ​​the small cover 91 is smaller than that of the large cover 92. The small cover 91 is used to cover the domain control board 61 on the large cover 92. The large cover 92 is used to connect with the main housing 3 of the drive system to install the PDM 62, capacitor 63, drive motor drive board 64, drive motor IGBT 65, integrated water channel 66, generator IGBT 67 and drive control integrated board 68 in the main housing 3. The large cover 92 is sealed and connected to the opening of the controller cavity 37, and the PDM 62, capacitor 63, drive motor drive board 64, drive motor IGBT 65, integrated water channel 66, generator IGBT 67 and drive control integrated board 68 are installed in the controller cavity 37.

[0173] Further, the PDM 62 includes a PDM water channel, which is connected in series with an integrated water channel 66. The cooling water first enters the PDM water channel to cool the capacitor 63 and the internal components of the PDM 62, and then flows into the integrated water channel 66, which cools the drive motor IGBT 65 and the generator IGBT 67, thereby improving the cooling efficiency.

[0174] Furthermore, if Figure 38-Figure 39 As shown, the integrated water channel 66 includes an upper water channel 661 and a lower water channel 662 . The upper water channel 661 is used to cool the drive motor IGBT65 , and the lower water channel 662 is used to cool the generator IGBT67 .

[0175] Specifically, Fig.38 As shown, the integrated water channel 66 also includes a water channel inlet 663 and a water channel outlet 664. The water channel inlet 663 is connected to the PDM water channel. The coolant flows into the upper water channel 661 from the water channel inlet 663. The upper water channel 661 is in direct contact with the drive motor IGBT65 to cool the drive motor IGBT.

[0176] like Fig.39 As shown, the coolant flows downward from one side of the upper water channel 661 into the lower water channel 662, and the lower water channel 662 is in direct contact with the generator IGBT 67, thereby cooling the generator IGBT 67. The coolant finally flows into the PDM 62 again from the water channel outlet 664.

[0177] In this embodiment, the controller assembly integrates more components, and the components are arranged more compactly, occupying a smaller volume. In addition, the integrated water channel can cool the drive motor IGBT65 and the generator IGBT67 at the same time, thereby improving the cooling efficiency. The integrated water channel is also connected in series with the PDM water channel, further improving the cooling efficiency.

[0178] Furthermore, if Fig.40 As shown, a water cooling inlet pipe 38 and a water cooling outlet pipe 39 are provided in the main housing 3;

[0179] The PDM 62 includes a PDM water channel, which is connected in series with the integrated water channel 66, and the water-cooling inlet pipe 38 and the water-cooling outlet pipe 39 are connected to the PDM water channel.

[0180] Specifically, Fig.35 As shown, the water cooling water inlet pipe 38 leads to the interior of the housing of the controller cavity 37. Since the PDM 62 is installed in the controller cavity 37, as shown in FIG. Fig.40 As shown, the water cooling inlet pipe 38 is directly connected to the shell water inlet 623 of the PDM water channel. The coolant flows from the water cooling inlet pipe 38 into the PDM water channel, then flows from the PDM water channel into the integrated water channel 66, then flows from the integrated water channel 66 back to the PDM water channel, and finally flows from the PDM water channel into the water cooling outlet pipe 39, which penetrates from the controller cavity 37 into the generator cavity 33.

[0181] like Figure 2 As shown, the drive system further includes an oil cooler 2, and a water cooling outlet pipe 39 is connected to the oil cooler 2. Since the oil cooler 2 is mounted on the generator cavity 33, the water cooling outlet pipe 39 is connected to the oil cooler 2, and the oil cooler 2 is continuously cooled, specifically, the oil in the oil cooler 2 is cooled, and finally the coolant flows out of the oil cooler 2 and flows into the cooling system of the vehicle to cool the coolant.

[0182] Furthermore, if Fig.37As shown, the PDM water channel includes a capacitor cooling unit 621 and a PDM cooling unit 622, and the capacitor cooling unit 621 and the PDM cooling unit 622 are connected in series.

[0183] like Fig.34 As shown, since the capacitor 63 is installed below the PDM 62, the capacitor cooling unit 621 contacts the upper surface of the capacitor 63 to cool the capacitor 63. The coolant first flows into the capacitor cooling unit 621 and then flows into the PDM cooling unit 622. The PDM cooling unit 622 is drawer-shaped and can cool the side and bottom surfaces of the components located therein.

[0184] Furthermore, if Fig.36 and Fig.40 As shown, PDM62 is provided with a shell water inlet 623, a shell water outlet 624, an integrated water channel inlet 625 and an integrated water channel outlet 626, the water cooling inlet pipe 38 is connected to the shell water inlet 623, the integrated water channel inlet 625 is connected to the water channel inlet 663 of the integrated water channel 66, the integrated water channel outlet 626 is connected to the water channel outlet 664 of the integrated water channel 66, and the shell water outlet 624 is connected to the water cooling outlet pipe 39.

[0185] Specifically, Fig.36 As shown, the shell water inlet 623 and the integrated water channel water inlet 625 are arranged at positions corresponding to the capacitor cooling unit 621 and the PDM cooling unit 622 , and the shell water outlet 624 and the integrated water channel water outlet 626 are arranged beside the PDM cooling unit 622 .

[0186] like Fig.40 As shown, the flow direction of the cooling circuit of the coolant is as follows: water cooling inlet pipe 38—shell water inlet 623—capacitor cooling unit 621—PDM cooling unit 622—integrated water channel inlet 625—water channel inlet 663—upper water channel 661—downstream water channel 662—water channel outlet 664—integrated water channel outlet 626—shell water outlet 624—water cooling outlet pipe 39.

[0187] The water-cooling outlet pipe 39 includes three sections, and the water-cooling outlet pipe 39 extends from the inside of the controller cavity 37 to the inside of the generator cavity 33 , so as to be connected with the oil cooler 2 installed on the generator cavity 33 .

[0188] It should be noted that Fig.40 The coolant is materialized to clearly show the flow path of the coolant.

[0189] The cooling circuit of the drive system in this embodiment is connected to the cooling system of the entire vehicle. The cooling circuit is formed by the arrangement of the main shell 3, PDM62 and integrated water channel 66. All cooling circuits are arranged inside the main shell 3 and do not require external pipes, making the overall structure of the drive system more compact and occupying less space.

[0190] In another embodiment of the present invention, Figure 41-42 As shown, the capacitor 63 and the integrated water channel 66 are integrally formed, making the overall structure more compact. The internal structures of the capacitor 63 and the integrated water channel 66 remain unchanged.

[0191] In addition, the integrated water channel 66 also integrates an upper row inverter three-phase terminal block 665 and a lower row inverter three-phase terminal block 666. The upper row inverter three-phase terminal block 665 connects the drive motor IGBT65 and the drive motor three-phase terminal block 641, and the lower row inverter three-phase terminal block 666 connects the generator IGBT67 and the generator three-phase terminal block 681.

[0192] The structure of the integrated capacitor 63, the integrated water channel 66 and the inverter three-phase wiring socket is more compact and convenient for wiring connection.

[0193] The above description is only the principle and preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several other modifications can be made based on the principle of the present invention, which should also be considered as the protection scope of the present invention.

Claims

1. An automobile drive system, comprising a drive housing assembly, a controller assembly and a transmission assembly, wherein the transmission assembly comprises an engine, a generator, a drive motor and a reducer; It is characterized in that The drive housing assembly includes a main housing, a front cover, a rear cover and an upper cover, the main housing includes a controller cavity, a gear cavity, a drive motor cavity and a generator cavity, the drive motor cavity and the generator cavity are located on the same side, the gear cavity is located on the opposite side of the drive motor cavity and the generator cavity, and the controller cavity is located above the generator cavity and the gear cavity; The controller assembly is installed in the controller cavity, and the upper cover covers the top of the controller cavity; The drive motor is installed in the drive motor cavity, the generator is installed in the generator cavity, and the rear end cover covers the rear sides of the drive motor cavity and the generator cavity; The reducer is installed in the gear chamber, and the front end cover covers the front side of the gear chamber; The engine is located outside the drive housing assembly, and the engine input shaft is connected to the reducer after passing through the front end cover.

2. The vehicle drive system according to claim 1, characterized in that: The transmission assembly also includes a speed increaser, an electromagnetic clutch and a direct drive gear, the speed increaser includes a speed increaser bearing, a first speed increaser gear and a second speed increaser gear, wherein the speed increaser bearing and the first speed increaser gear are coaxially connected to the generator, the second speed increaser gear is coaxially connected to the engine input shaft, the electromagnetic clutch and the direct drive gear, and the first speed increaser gear is meshed with the second speed increaser gear.

3. The vehicle driving system according to claim 1, characterized in that: An oil pump, an oil cooler and a switch solenoid valve are installed in the main housing, the oil pump pumps the oil into the oil cooler, and the oil cooler cools the oil; The main housing further comprises an oil distribution chamber, which is arranged in the main housing. The oil cooler delivers cooled oil to the oil distribution chamber. The oil distribution chamber comprises a first oil chamber and a second oil chamber. The first oil chamber is communicated with the drive motor chamber, and the second oil chamber is communicated with the generator chamber. The switch solenoid valve is disposed between the first oil chamber and the second oil chamber. When the switch solenoid valve is opened, the oil flows from the first oil chamber into the second oil chamber.

4. The vehicle driving system according to claim 3, characterized in that: It also includes a drive motor oil circuit, a reduction system oil circuit, a generator oil circuit and an increase system oil circuit. The first oil chamber connects the drive motor oil circuit and the reduction system oil circuit, and the second oil chamber connects the generator oil circuit and the increase system oil circuit.

5. The vehicle driving system according to claim 1, characterized in that: The controller assembly includes, from top to bottom, a domain control board, a PDM, a capacitor, a drive motor drive board, a drive motor IGBT, an integrated water channel, a generator IGBT and a drive control integrated board; The capacitor and the integrated water channel are arranged side by side below the PDM, the drive motor IGBT is located above the integrated water channel, and the generator IGBT is located below the integrated water channel; The drive motor drive board is located between the drive motor IGBT and the PDM, and the drive control integrated board is located below the generator IGBT and the capacitor.

6. The vehicle driving system according to claim 5, characterized in that: The upper cover includes a small cover and a large cover, the domain control board is arranged between the small cover and the large cover, the small cover is located above the domain control board, and the large cover is located above the PDM.

7. The vehicle driving system according to claim 5, characterized in that: The main housing is provided with a water cooling inlet pipe and a water cooling outlet pipe; The PDM comprises a PDM water channel, the PDM water channel is connected in series with the integrated water channel, and the water-cooling inlet pipe and the water-cooling outlet pipe are connected to the PDM water channel.

8. The vehicle driving system according to claim 7, characterized in that: The PDM water channel includes a capacitor cooling unit and a PDM cooling unit, and the capacitor cooling unit and the PDM cooling unit are connected in series.

9. The vehicle driving system according to claim 7, characterized in that: The PDM is provided with a shell water inlet, a shell water outlet, an integrated water channel inlet and an integrated water channel outlet; the water cooling inlet pipe is connected to the shell water inlet, the integrated water channel inlet is connected to the inlet of the integrated water channel, the integrated water channel outlet is connected to the outlet of the integrated water channel, and the shell water outlet is connected to the water cooling outlet pipe.

10. The vehicle driving system according to claim 5, characterized in that: The integrated water channel includes an upper water channel and a lower water channel, the upper water channel is used to cool the drive motor IGBT, and the lower water channel is used to cool the generator IGBT.

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