CN213007559U

CN213007559U - Electric drive power assembly with rear-mounted controller

Info

Publication number: CN213007559U
Application number: CN202021044546.4U
Authority: CN
Inventors: 杨先时; 牛波; 牛正蕊
Original assignee: Fish Green Energy Technology Ningbo Co ltd
Current assignee: Fish Green Energy Technology Ningbo Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-04-20
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a rearmounted electric drive power assembly of controller, wherein the driving motor assembly includes motor casing and back flange, the motor controller assembly is arranged in the space of back flange envelope, the motor controller assembly includes the heat dissipation bottom plate of integration on the controller body, cooling runner I has been seted up to heat dissipation bottom plate inside, and the heat dissipation bottom plate is equipped with water inlet one and delivery port one, set up on the back flange with the water inlet three of the sealed intercommunication of water inlet one, the inside cooling runner two that is equipped with of motor casing, and motor casing is equipped with water inlet two and delivery port two, delivery port one and the sealed intercommunication of water inlet two. The utility model integrates the motor controller assembly at the rear end of the driving motor assembly, and eliminates the positioning assembly process of the connecting surface of the two sections of shell bodies compared with the traditional two sections of shell body designs; and an internal integrated cooling circuit is adopted, so that the connection of an external cooling circuit is reduced, the assembly process is simplified, and the manufacturing cost is reduced.

Description

Electric drive power assembly with rear-mounted controller

Technical Field

The utility model relates to a new energy automobile electric drive assembly field, concretely relates to rearmounted electric drive power assembly of controller.

Background

Under the development theme of energy conservation and environmental protection, a plurality of new energy vehicles support policies are developed in China, the technology of the new energy vehicles is continuously updated in an iterative mode, particularly, the integration degree of a power assembly of a pure electric drive vehicle is higher and higher, the space size of a traditional electric drive system is reduced, the whole vehicle matching arrangement is facilitated, the development trend of the integration of the new energy vehicle industry is met, and meanwhile, the higher integration degree of the electric drive assembly meets the requirement that the production and manufacturing cost of the whole vehicle is reduced.

Examples of prior art solutions are as follows:

patent No. CN 201830656167.2: the appearance is specified in figure 1. The appearance is arranged to trinity electric drive assembly, and its controller 1 arranges in motor assembly 2 top.

Other existing embodiments have specific schemes:

as shown in fig. 2, the controller 1 is disposed above the motor assembly 2, and the controller cooling channel and the motor cooling channel are connected by an external hose 3.

Above-mentioned two kinds of controllers arrange the scheme, and the design is equallyd divide apart to controller casing and motor casing, need carry out processes such as secondary location assembly, and its cooling channel not only needs bigger assembly space through external hose form intercommunication, and its process and spare part manufacturing cost are higher simultaneously.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide an electric drive power assembly with a rear controller, which integrates a motor controller assembly at the rear end of a drive motor assembly, and eliminates the positioning and assembling process of the connection surface of the two parts of the traditional two-section shell design; meanwhile, an internal integrated cooling loop is adopted, so that the connection of an external cooling loop is reduced, the assembly process is simplified, the manufacturing cost is reduced, and the assembly space is shortened.

In order to realize the technical purpose, the utility model discloses the technical scheme who takes does:

an electric drive power assembly with a rear controller comprises a drive motor assembly, a speed reducer assembly and a motor controller assembly, wherein the speed reducer assembly is connected to the front end of the drive motor assembly, the motor controller assembly is connected to the rear end of the drive motor assembly, the drive motor assembly comprises a motor rotor, a motor stator, a motor shell and a rear flange, the motor stator is positioned on the inner side of the motor shell, the motor rotor is positioned on the inner side of the motor stator, the front end of the rear flange is fixedly connected with the rear end of the motor shell, the motor controller assembly is fixedly connected with the rear flange and positioned in the space enveloped by the rear flange, the motor controller assembly comprises a controller body and a heat dissipation bottom plate integrated at the bottom of the controller body, a cooling flow channel I is arranged inside the heat dissipation bottom plate, and the heat dissipation bottom plate is provided with a water inlet I and a water outlet I communicated with the, the rear flange is provided with a water inlet III which is communicated with a water inlet I on the heat dissipation bottom plate in a sealing mode, the inside of the motor shell is provided with a cooling flow channel II, the motor shell is provided with a water inlet II and a water outlet II which are communicated with the cooling flow channel II, the water outlet I of the heat dissipation bottom plate is connected with the water inlet II of the motor shell in a sealing mode, and the rear end of the rear flange is fixedly connected with a cover plate.

As a further improved technical scheme of the utility model, the front end of rear flange passes through bolt fixed connection with motor casing's rear end.

As a further improved technical scheme of the utility model, the inside cooling runner of heat dissipation bottom plate is the U type.

As the utility model discloses further modified technical scheme, water inlet three on the back flange and the water inlet on the radiating bottom plate one pass through O type circle sealing connection.

As a further improved technical scheme of the utility model, O type circle sealing connection is passed through with motor casing's water inlet two to the delivery port one of heat dissipation bottom plate.

As a further improved technical scheme of the utility model, motor casing includes interior casing and shell body, water inlet two and delivery port two all set up on the shell body, the outer periphery of interior casing is equipped with the helicla flute of ring outer wall, the outside of casing including the coaxial shrink fit of shell body, water inlet two communicates with the initial position of helicla flute, delivery port two communicates with the terminal position of helicla flute, constitutes spiral cooling runner two from this.

The utility model has the advantages that:

compared with the prior arrangement scheme, the controller arrangement scheme of the utility model has the advantages that the controller assembly, the driving motor assembly and the reducer assembly are highly integrated, the space is utilized to the maximum extent to reduce the overall size, and the light weight design of the electric drive assembly is realized;

the motor controller assembly is integrated in the space enveloped by the rear flange of the motor shell, and compared with the traditional two-section shell design (namely the separated design of the controller shell and the motor shell), the positioning and assembling process of the connecting surface of the controller shell and the motor shell is eliminated; the cooling circuit is located inside, so that the connection of the external cooling circuit is reduced, the assembly process is simplified, and the manufacturing cost is reduced. The cooling circuit integrated inside is beneficial to reducing the on-way pressure loss of oil and improving the cooling efficiency.

Drawings

Fig. 1 is a schematic diagram of a prior art external patent.

Fig. 2 is a schematic diagram of a prior embodiment.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a structural section view of the present invention.

Fig. 5 is a schematic view of a cooling flow channel structure of the heat dissipation bottom plate of the present invention.

Fig. 6 is the utility model discloses heat dissipation bottom plate and the water inlet of back flange three or heat dissipation bottom plate and motor casing's two sealing connection schematic diagrams of water inlet.

Detailed Description

The following further description of embodiments of the invention is made with reference to the accompanying drawings:

as shown in fig. 3, 4 and 5, an electric drive power assembly with a rear-mounted controller includes a drive motor assembly, a reducer assembly and a motor controller assembly 8, the reducer assembly is connected to the front end of the drive motor assembly, the motor controller assembly 8 is connected to the rear end of the drive motor assembly, the drive motor assembly includes a motor rotor, a motor stator, a motor housing 4 and a rear flange 5, the motor stator is located inside the motor housing 4, the motor rotor is located inside the motor stator, the front end of the rear flange 5 is fixedly connected to the rear end of the motor housing 4, the motor controller assembly 8 is fixedly connected to the rear flange 5 and located in a space enveloped by the rear flange 5, the motor controller assembly 8 includes a controller body and a heat dissipation bottom plate 18 integrated at the bottom of the controller body, a cooling flow channel one 17 is disposed inside the heat dissipation bottom plate 18, and the heat dissipation bottom plate 18 is equipped with water inlet one 10 and delivery port one 11 with cooling runner one 17 intercommunication, set up on the rear flange 5 with the water inlet three 9 of the water inlet one 10 sealed intercommunication on the heat dissipation bottom plate 18, the inside of motor casing 4 is equipped with cooling runner two 14, motor casing 4 is equipped with water inlet two 12 and delivery port two 16 with cooling runner two 14 intercommunication, water outlet two 12 sealing connection of delivery port one 11 and motor casing 4 of heat dissipation bottom plate 18, the rear end fixedly connected with apron 6 of rear flange 5.

In this embodiment, the front end of the rear flange 5 is fixedly connected to the rear end of the motor housing 4 by bolts.

In this embodiment, as shown in fig. 5, the first cooling channel 17 inside the heat dissipation base plate 18 is U-shaped.

In this embodiment, the third water inlet 9 on the rear flange 5 is hermetically connected with the first water inlet 10 on the heat dissipation bottom plate 18 through an O-ring.

In this embodiment, as shown in fig. 6, the first water outlet 11 of the heat dissipation bottom plate 18 is hermetically connected with the second water inlet 12 of the motor housing 4 through an O-ring 19. And a first water outlet 11 of the control cooling channel and a second water inlet 12 of the motor cooling channel are sealed by an O-shaped ring 19 to ensure the sealing reliability of the cooling liquid.

In this embodiment, as shown in fig. 4, the motor housing 4 includes an inner housing 13 and an outer housing 15, the second water inlet 12 and the second water outlet 16 are both disposed on the outer housing 15, a spiral groove surrounding an outer wall is disposed on an outer circumferential surface of the inner housing 13, the outer housing 15 is coaxially sleeved outside the inner housing 13, the second water inlet 12 is communicated with a start position of the spiral groove, and the second water outlet 16 is communicated with a terminal position of the spiral groove, so as to form a second spiral cooling flow channel 14.

The speed reducer assembly and the driving motor assembly of the embodiment adopt a common shell form (namely an integral shell structure) to reduce the connection surface and bolt connection between the speed reducer shell and the motor shell 4; the integrated shell structure (namely the motor shell 4 in the figure) is connected with the front end shell 7 of the speed reducer in a bolt mode; the controller assembly is arranged in a space enveloped by the rear flange 5 and the rear end of the driving motor assembly, and the rear flange 5 is connected with the integrated shell structure in a flange bolt mode.

As shown in fig. 4 and 5, the motor controller assembly 8 is located in the rear flange 5 at the rear end of the driving motor assembly, the heat dissipation bottom plate 18 at the bottom of the controller body is a cooling loop of the controller, external cooling liquid flows in from the water inlet three 9 of the rear flange 5, enters the U-shaped cooling flow channel one 17 of the heat dissipation bottom plate 18 through the water inlet one 10, flows out from the water outlet one 11 of the U-shaped cooling flow channel one 17, enters the water inlet two 12 of the motor housing 4, passes through the cooling flow channel two 14 of the motor housing 4, and finally flows out from the water outlet two 16 of the motor housing 4, so that system heat exchange is completed to form a closed loop.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims

1. The utility model provides a rearmounted electric drive power assembly of controller, includes driving motor assembly, reduction gear assembly and machine controller assembly, the reduction gear assembly is connected at driving motor assembly front end, machine controller assembly connects the rear end at driving motor assembly, its characterized in that: the driving motor assembly comprises a motor rotor, a motor stator, a motor shell and a rear flange, wherein the motor stator is positioned on the inner side of the motor shell, the motor rotor is positioned on the inner side of the motor stator, the front end of the rear flange is fixedly connected with the rear end of the motor shell, the motor controller assembly is fixedly connected with the rear flange and positioned in a space enveloped by the rear flange, the motor controller assembly comprises a controller body and a heat dissipation bottom plate integrated at the bottom of the controller body, a cooling flow channel I is arranged inside the heat dissipation bottom plate, the heat dissipation bottom plate is provided with a water inlet I and a water outlet I communicated with the cooling flow channel I, a water inlet III hermetically communicated with the water inlet I on the heat dissipation bottom plate is arranged on the rear flange, a cooling flow channel II is arranged inside the motor shell, and the motor shell is provided with a water inlet, the first water outlet of the heat dissipation bottom plate is communicated with the second water inlet of the motor shell in a sealing mode, and the rear end of the rear flange is fixedly connected with a cover plate.

2. An electrically driven powertrain with a rear controller as set forth in claim 1 wherein: the front end of the rear flange is fixedly connected with the rear end of the motor shell through bolts.

3. An electrically driven powertrain with a rear controller as set forth in claim 2 wherein: and the first cooling flow channel in the heat dissipation bottom plate is U-shaped.

4. An electrically driven powertrain with a rear controller as set forth in claim 1 wherein: and a third water inlet on the rear flange is hermetically connected with a first water inlet on the heat dissipation bottom plate through an O-shaped ring.

5. An electrically driven powertrain with a rear controller as set forth in claim 4 wherein: and the first water outlet of the heat dissipation bottom plate is hermetically connected with the second water inlet of the motor shell through an O-shaped ring.

6. An electrically driven powertrain with a rear controller as set forth in claim 5 wherein: the motor shell comprises an inner shell and an outer shell, wherein a water inlet II and a water outlet II are both arranged on the outer shell, the outer circumferential surface of the inner shell is provided with a spiral groove with a ring outer wall, the outer part of the inner shell is coaxially sleeved with the outer shell, the water inlet II is communicated with the initial position of the spiral groove, and the water outlet II is communicated with the tail end of the spiral groove, so that a spiral cooling flow passage II is formed.