CN215912004U - Electric drive system and vehicle - Google Patents

Abstract

The utility model discloses an electric drive system and a vehicle, the electric drive system comprises: a speed reducer; the motor is arranged in the speed reducer and is in transmission connection with the speed reducer; the controller, the controller sets up in the motor outside, and the controller includes: the cooling module is electrically connected with the motor and provided with a first cooling oil way and a cooling water way for heat exchange, the control module is provided with a second cooling oil way, one end of the first cooling oil way is connected with one end of the second cooling oil way in series, and the other end of the first cooling oil way and the other end of the second cooling oil way are respectively communicated with the inside of the motor to form a circulating oil way. The cooling system integrated with the control module can reduce the number of cooling plug connectors and cooling oil pipes, reduce the cost and the size, and can also simplify the cooling circulation water path of the whole vehicle.

Description

Electric drive system and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to an electric drive system and a vehicle.

Background

Along with the development of new energy automobile drive technology, with the trinity mode that motor controller and driving motor + reducing gear box are integrated together, can cancel controller and the three alternate high-voltage conductor of motor to save the cost and reduce the volume, consequently trinity will be more extensive at most the application of unifying at most even. All trinity each part need design cooling system to guarantee normal work.

The oil-cooled motor can obviously improve the heat dissipation efficiency, an extra water jacket is not required to be arranged, the volume and the weight of the motor can be reduced while the motor efficiency is improved, and the oil cooling can be expected to be the main flow direction of the next-stage motor cooling. Because the internal PCB board can not direct contact coolant liquid, the motor controller designs the cooling water route in controller inside usually, comes out heat transfer through letting in the coolant liquid for the cooling water route. The reduction gearbox is generally cooled by oil cooling, and by arranging an external cooler, oil in the reduction gearbox is led into the cooler, and then the oil in the cooler is cooled by externally supplying cooling water or air cooling.

In the related art, since the motor controller cools the cooling liquid in the vehicle cooling circulation system, the oil cools the motor and the reduction gearbox, and the lubricating oil in the reduction gearbox is used. The difference in cooling liquid leads to the need to design at least two sets of cooling systems, which undoubtedly increases the corresponding cooling water pipes and requires a certain space for arrangement, resulting in increased volume and increased cost.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an electric drive system, which switches the cooling liquid of a control module into the lubricating oil in a speed reducer to realize the integration of the cooling systems of the control module, a motor and the speed reducer, thereby reducing the number of cooling plug connectors and cooling oil pipes and reducing the cost.

The utility model also provides a vehicle.

An electric drive system according to an embodiment of the first aspect of the utility model comprises: a motor; a speed reducer; the motor is arranged in the speed reducer and is in transmission connection with the speed reducer; a controller disposed outside the motor, the controller including: the cooling module is provided with a first cooling oil way and a cooling water way which are used for heat exchange, the control module is provided with a second cooling oil way, one end of the first cooling oil way is connected with one end of the second cooling oil way in series, and the other end of the second cooling oil way is communicated with the inside of the speed reducer to form a circulating oil way.

According to the electric drive system disclosed by the embodiment of the utility model, the cooling liquid of the control module is switched into the lubricating oil in the speed reducer, so that the integration of the cooling systems of the control module, the motor and the speed reducer is realized, the number of cooling plug connectors and cooling oil pipes can be reduced by the cooling system integrating the cooling module, the motor and the speed reducer, the cost is reduced, the size is reduced, and the cooling circulation water path of the whole vehicle can be simplified.

According to some embodiments of the utility model, the controller is provided with an oil inlet and an oil outlet, the other end of the first cooling oil path is connected to the oil inlet, and the other end of the second cooling oil path is connected to the oil outlet.

According to some embodiments of the utility model, the electric drive system comprises: the oil inlet pipe is arranged on the shell and communicated with the inner part of the shell, the oil inlet pipe penetrates through the shell, and one end of the oil inlet pipe is connected to the oil pump and the other end of the oil inlet pipe is communicated with the first cooling oil way through the oil inlet.

According to some embodiments of the utility model, the electric drive system further comprises: the oil outlet pipe penetrates through the shell, one end of the oil outlet pipe is communicated with the second cooling oil way through the oil outlet, and the other end of the oil outlet pipe faces towards the inside of the motor to discharge oil.

According to some embodiments of the utility model, the outlet pipe is a shower pipe, and the shower pipe is provided with a plurality of shower holes.

According to some embodiments of the utility model, the electric machine comprises: a stator and a rotor, the stator being disposed in the housing and the rotor being disposed inside the stator; the shower includes: the main pipe is communicated with the second cooling oil way through the oil outlet, the first branch pipe and the second branch pipe are respectively connected to the main pipe and are respectively provided with the spraying holes, and the first branch pipe is correspondingly arranged on the outer side of the stator and the second branch pipe is correspondingly arranged on the outer side of the speed reducer.

According to some embodiments of the utility model, the housing comprises: first casing, second casing and end cover, first casing with the second casing set up relatively and with the end cover sets up relatively, stator and rotor set up in the end cover with in the first casing, advance oil pipe with the house steward all wears to establish first casing, the reduction gear set up in first casing with between the second casing, the second branch pipe is worn to establish first casing is in order to stretch into first casing with between the second casing.

According to some embodiments of the utility model, the housing further comprises: the controller casing, the first casing outside is formed with dodges the groove, the controller casing set up in dodge the inslot, the controller set up in the controller casing.

According to some embodiments of the utility model, the controller is provided with a water inlet and a water outlet, the water inlet and the water outlet are located on opposite sides of the cooling water path, or the water inlet and the water outlet are located on the same side of the cooling water path.

A vehicle according to an embodiment of the second aspect of the utility model includes the electric drive system of the above-described embodiment.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of an electric drive system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an electric drive system according to an embodiment of the present invention.

Reference numerals:

100. an electric drive system;

10. a motor; 11. a housing; 111. a first housing; 112. a second housing; 113. an avoidance groove; 114. an oil storage space; 115. an end cap; 116. a partition plate; 117. a controller housing; 12. an oil pump; 13. an oil inlet pipe; 14. an oil outlet pipe; 141. a header pipe; 142. a first branch pipe; 143. a second branch pipe; 15. a stator; 16. a rotor;

20. a speed reducer;

30. a controller; 31. a cooling module; 32. a control module; 33. an oil inlet; 34. an oil outlet; 35. a water inlet; 36. and (7) a water outlet.

Detailed Description

Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.

Referring now to fig. 1-2, an electric drive system 100 according to an embodiment of the present invention is described, and a vehicle having the electric drive system 100 is also presented.

An electric drive system 100 of an embodiment of the present invention includes: the motor 10, the reducer 20 and the controller 30, the motor 10 is disposed in the reducer 20, the reducer 20 is in transmission connection with the motor 10, and the controller 30 is disposed outside the motor 10, that is, when the motor 10 is in operation, the motor 10 can be in transmission connection with the reducer 20, and the output efficiency of the motor 10 can be controlled through the reducer 20. And, set up controller 30 in the motor 10 outside, like this, integrate motor 10, controller 30 and reduction gear 20, only need one set of suspension installation fix on whole car can, need not to install controller 30 and motor 10 separately, practiced thrift the space. Meanwhile, the connection of the three-phase high-voltage wire harness between the controller 30 and the motor 10 is eliminated, so that the arrangement space of the whole vehicle is saved, the cost is reduced, and the reliability of the electric drive system 100 is improved.

Further, the controller 30 includes: cooling module 31 and control module 32, control module 32 is connected with motor 10 electricity, and cooling module 31 is provided with the first cooling oil circuit and the cooling water route that are used for the heat exchange, and control module 32 is provided with the second cooling oil circuit, and the one end of first cooling oil circuit and the one end series connection of second cooling oil circuit, the other end of second cooling oil circuit is linked together with reduction gear 20 inside respectively to form the circulating oil circuit. That is to say, communicate between first cooling oil circuit and the second cooling oil circuit to first cooling oil circuit can carry out the heat transfer with the cooling water route, thereby can cool down to the lubricating oil in the first cooling oil circuit, and further, when the lubricating oil flows to second cooling oil circuit, lubricating oil can carry out the heat transfer with control module 32, thereby can cool down control module 32. The control module 32 may be an IGBT module.

Further, the lubricating oil flows to the motor 10 and the speed reducer 20, and the lubricating oil can lubricate the motor 10 and the speed reducer 20 and can exchange heat with the motor 10 and the speed reducer 20, that is, the lubricating oil can cool the motor 10 and the speed reducer 20. That is, the cooling liquid of the control module 32 is switched to the lubricating oil in the speed reducer 20, so that the cooling system of the control module 32, the motor 10, and the speed reducer 20 is integrated.

From this, switch control module 32's coolant liquid into the lubricating oil in reduction gear 20, realize control module 32, motor 10 and reduction gear 20 three cooling system's integration, the cooling system who has integrateed the three can reduce cooling plug connector and cooling oil pipe quantity, and the cost is reduced has reduced the volume to can also simplify whole car cooling cycle water route.

As shown in fig. 1 and 2, the controller 30 is provided with an oil inlet 33 and an oil outlet 34, the other end of the first cooling oil path is connected to the oil inlet 33, and the other end of the second cooling oil path is connected to the oil outlet 34. That is to say, one end of the first cooling oil path is connected to the oil inlet 33, so that the lubricating oil can enter the first cooling oil path through the oil inlet 33, and thus the lubricating oil can exchange heat with the cooling module 31, so that the temperature of the lubricating oil can be reduced, and then the lubricating oil enters the second cooling oil path, and the second cooling oil path exchanges heat with the control module 32, so that the temperature of the control module 32 can be reduced, and finally the lubricating oil enters the motor 10 and the speed reducer 20 through the oil outlet 34. The lubricating oil entering the motor 10 and the speed reducer 20 can cool the motor 10 and the speed reducer 20, the lubricating oil can lubricate the motor 10 and the speed reducer 20, and finally the lubricating oil enters the first cooling oil path from the oil inlet 33 again, so that the circulation of the lubricating oil can be realized.

As shown in fig. 2, the electric drive system 100 includes: casing 11, oil pump 12 and advance oil pipe 13, oil pump 12 sets up on casing 11 to oil pump 12 is linked together with the casing 11 is inside, advances oil pipe 13 and wears to establish casing 11, advances the one end of oil pipe 13 and connects in oil pump 12, and advances the other end of oil pipe 13 and be linked together with first cooling oil circuit through oil inlet 33. That is, the lubricating oil can be introduced into the first cooling oil passage through the oil inlet pipe 13 under the drive of the oil pump 12, so that, when the lubricating oil is introduced into the bottom of the housing 11 through one circulation, the lubricating oil is sucked by the oil pump 12 and re-introduced into the circulation oil passage. Wherein, the oil pump 12 is disposed at the opposite bottom of the housing 11, so that the lubricating oil falls into the bottom of the housing 11 after cooling and lubricating the motor 10 and the reducer 20, thereby facilitating the suction of the oil pump 12.

Further, as shown in FIG. 2, the electric drive system 100 further includes: an oil outlet pipe 14, the oil outlet pipe 14 penetrates the housing 11, one end of the oil outlet pipe 14 is communicated with the second cooling oil path through an oil outlet 34, and the other end of the oil outlet pipe is used for discharging oil towards the inside of the motor 10. That is, the lubricating oil enters the case 11 through the oil outlet pipe 14 while flowing out of the oil outlet port 34, and lubricates and cools the motor 10 and the reduction gear 20.

Wherein, the oil outlet pipe 14 can be a spray pipe, and a plurality of spray holes are arranged on the spray pipe. That is to say, a plurality of spraying holes are formed in the oil outlet pipe 14, so that the lubricating oil can be sprayed on the motor 10 and the speed reducer 20 through the spraying holes after entering the oil outlet pipe 14, and the lubricating oil can well lubricate and cool the motor 10 and the speed reducer 20. Wherein a plurality of shower holes may be provided at intervals in the axial direction of the shower pipe, so that the motor 10 and the reducer 20 may be uniformly lubricated and cooled by the lubricating oil.

As shown in fig. 2, the motor 10 includes: a stator 15 and a rotor 16, the stator 15 being disposed in the housing 11, and the rotor 16 being disposed inside the stator 15. Wherein the stator 15 is fixed on the housing 11, the rotor 16 rotates relative to the stator 15, and the rotor 16 is in transmission connection with the reducer 20. Further, the shower includes: the main pipe 141 is communicated with the second cooling oil path through the oil outlet 34, the first branch pipe 142 and the second branch pipe 143 are respectively connected to the main pipe 141 and provided with spraying holes, the first branch pipe 142 is correspondingly arranged on the outer side of the stator 15, and the second branch pipe 143 is correspondingly arranged on the outer side of the speed reducer 20. That is, the shower pipe is divided into a first branch pipe 142 and a second branch pipe 143, wherein the first branch pipe 142 can shower the rotor 16, and the second branch pipe 143 can shower the decelerator 20, so that the outlet 14 can lubricate and cool the motor 10 and the decelerator 20 at the same time. Further, each of the first branch pipe 142 and the second branch pipe 143 communicates with the manifold 141, and the manifold 141 communicates with the oil outlet 34, so that the lubricating oil can enter into the first branch pipe 142 and the second branch pipe 143 through the manifold 141. The manifold 141 is formed in a ring shape, the first branch pipes 142 and the second branch pipes 143 may be plural, the plural first branch pipes 142 and the plural second branch pipes 143 may be spaced apart from each other on the ring-shaped manifold 141, and further, the manifold 141 and the housing 11 may be detachably connected to each other.

As shown in fig. 2, the housing 11 includes: first casing 111, second casing 112 and end cover 115, first casing 111 sets up with second casing 112 relatively to first casing 111 and end cover 115 set up relatively, and stator 15 and rotor 16 set up in end cover 115 and first casing 111, and oil inlet pipe 13 and house steward 141 all wear to establish first casing 111, and reduction gear 20 sets up between first casing 111 and second casing 112, and second branch pipe 143 wears to establish first casing 111 in order to stretch into between first casing 111 and the second casing 112. That is, the housing 11 is divided into a first housing 111, a second housing 112 and an end cover 115, wherein the first housing 111 and the end cover 115 are used for mounting the motor 10, the first housing 111 and the second housing 112 are used for mounting the reducer 20, and furthermore, a partition 116 is provided between the first housing 111 and the second housing 112, and the partition 116 can separate the motor 10 and the reducer 20 so that the motor 10 and the reducer 20 are relatively sealed, so that interference between the motor 10 and the reducer 20 does not occur.

Further, the partition 116 is provided with a through hole provided at the bottom of the partition 116 so that the lubricating oil flowing out from the first branch pipe 142 can enter the second casing 112 from the through hole, and the bottom of the second casing 112 is provided with the oil storage space 114 so that the lubricating oil flowing into the second casing 112 from the first casing 111 is stored in the oil storage space 114, and the lubricating oil flowing out from the second branch pipe 143 is dropped into the oil storage space 114 after cooling and lubricating the reduction gear 20. Further, the oil pump 12 is disposed at the bottom of the second housing 112, and corresponds to the oil storage space 114, so that the oil pump 12 can draw the lubricating oil from the oil storage space 114 and supply the lubricating oil to the circulating oil path.

Further, the housing 11 further includes: the controller case 117 has an escape groove 113 formed on the outer side of the first case 111, the controller case 117 is disposed in the escape groove 113, and the controller 30 is disposed in the controller case 117. That is, the avoidance groove 113 is formed on the outer side of the first housing 111, so that the controller housing 117 can be installed outside the first housing 111, and thus the motor 10, the control module 32, the speed reducer 20 and the cooling module 31 are organically integrated and installed together through the integrated housing 11, so that the motor 10, the control module 32, the speed reducer 20 and the cooling module 31 can be better matched and connected, the performance of each component product can be fully exerted, and effective heat management can be performed on all heat generating components; meanwhile, the weight of the whole machine is reduced, the manufacturing and processing procedures are reduced, the manufacturing and raw material cost is saved, the whole machine has a smaller volume, and the whole machine is more favorable for carrying and matching on the whole vehicle.

Further, as shown in fig. 1 and 2, the controller 30 is provided with a water inlet 35 and a water outlet 36, and the water inlet 35 and the water outlet 36 are located at opposite sides of the cooling water path, or the water inlet 35 and the water outlet 36 are located at the same side of the cooling water path. That is to say, controller 30 can realize the circulation of coolant liquid through water inlet 35 and delivery port 36 to make the coolant liquid in cooling module 31 continuously carry out the heat transfer with first cooling oil circuit, thereby cool down the coolant liquid, and then make electrically drive system 100 internal heat balance.

A vehicle according to a second aspect embodiment of the utility model includes the electric drive system 100 of the above-described embodiment. The motor 10, the control module 32, the speed reducer 20 and the cooling module 31 are organically integrated and mounted together through the integrated shell 11, so that the motor 10, the control module 32, the speed reducer 20 and the cooling module 31 can be better matched and connected, the performance of each component product is fully exerted, and effective heat management can be carried out on all heat generating components.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An electric drive system, comprising:

a speed reducer;

the motor is arranged in the speed reducer and is in transmission connection with the speed reducer;

a controller disposed outside the motor, the controller including: the cooling module is provided with a first cooling oil way and a cooling water way which are used for heat exchange, the control module is provided with a second cooling oil way, one end of the first cooling oil way is connected with one end of the second cooling oil way in series, and the other end of the second cooling oil way is communicated with the inside of the speed reducer to form a circulating oil way.

2. The electric drive system of claim 1, wherein the controller is provided with an oil inlet and an oil outlet, the other end of the first cooling oil path being connected to the oil inlet, and the other end of the second cooling oil path being connected to the oil outlet.

3. The electric drive system of claim 2, further comprising: the oil inlet pipe is arranged on the shell and communicated with the inner part of the shell, the oil inlet pipe penetrates through the shell, and one end of the oil inlet pipe is connected to the oil pump and the other end of the oil inlet pipe is communicated with the first cooling oil way through the oil inlet.

4. The electric drive system of claim 3, further comprising: the oil outlet pipe penetrates through the shell, one end of the oil outlet pipe is communicated with the second cooling oil way through the oil outlet, and the other end of the oil outlet pipe faces towards the inside of the motor to discharge oil.

5. The electric drive system of claim 4, wherein the flow line is a shower, and wherein the shower is provided with a plurality of shower holes.

6. The electric drive system of claim 5, wherein the electric machine comprises: a stator and a rotor, the stator being disposed in the housing and the rotor being disposed inside the stator;

the shower includes: the main pipe is communicated with the second cooling oil way through the oil outlet, the first branch pipe and the second branch pipe are respectively connected to the main pipe and are respectively provided with the spraying holes, and the first branch pipe is correspondingly arranged on the outer side of the stator and the second branch pipe is correspondingly arranged on the outer side of the speed reducer.

7. The electric drive system of claim 6, wherein the housing comprises: first casing, second casing and end cover, first casing with the second casing set up relatively and with the end cover sets up relatively, stator and rotor set up in the end cover with in the first casing, advance oil pipe with the house steward all wears to establish first casing, the reduction gear set up in first casing with between the second casing, the second branch pipe is worn to establish first casing is in order to stretch into first casing with between the second casing.

8. The electric drive system of claim 7, wherein the housing further comprises: the controller casing, the first casing outside is formed with dodges the groove, the controller casing set up in dodge the inslot, the controller set up in the controller casing.

9. The electric drive system of claim 1, wherein the controller is provided with a water inlet and a water outlet, the water inlet and the water outlet being located on opposite sides of the cooling water circuit, or the water inlet and the water outlet being located on a same side of the cooling water circuit.

10. A vehicle comprising an electric drive system according to any one of claims 1-9.

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