CN214822553U

CN214822553U - Three-in-one electric drive system for electric automobile

Info

Publication number: CN214822553U
Application number: CN202120263528.3U
Authority: CN
Inventors: 陈登峰; 陈雷; 周诗君; 应红亮; 陈红梅; 苏猛; 孙臣玉
Original assignee: Shanghai Auto Edrive Co Ltd; Shanghai Auto Edrive Engineering Technology Research Center; Shanghai Edrive Co Ltd
Current assignee: Shanghai Auto Edrive Co Ltd; Shanghai Auto Edrive Engineering Technology Research Center; Shanghai Edrive Co Ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-11-23
Anticipated expiration: 2031-01-30

Abstract

The utility model relates to an electric drive system of trinity for car, including controller, motor and reduction gear, the motor includes motor casing, is equipped with "8" font opening chamber at motor casing's tail end, the controller is including installation shell, electrical control module and end cover, the installation shell includes the intermediate lamella, and the both sides of intermediate lamella are first box and second box respectively, the second box is the apron in "8" font opening chamber, and the second box forms reduction gear housing with "8" font opening chamber folds the back, electrical control module installs in first box, and electrical control module's output passes the intermediate lamella and connects the motor, the opening part at first box is installed to the end cover. Compared with the prior art, the utility model has the advantages of realize that the degree of depth of controller, reduction gear and motor is integrated, promote actuating system's power density, satisfy market demand.

Description

Three-in-one electric drive system for electric automobile

Technical Field

The utility model belongs to the technical field of electric automobile and specifically relates to a trinity electricity system of driving for electric automobile is related to.

Background

With the increasing popularity of new energy automobiles in recent years, the arrangement space of a motor controller in the whole automobile is limited, and the heat productivity of components inside the controller is large, so that the requirements of compact structure, small mass and volume and good heat dissipation capacity are provided for the controller. The electric automobile has relatively small space of the whole automobile, and the arrangement space in the engine room of the electric automobile is relatively limited to a certain degree, so that the electric driving system of the whole automobile is required to be light, integrated and miniaturized.

An electric drive system for a traditional new energy automobile generally adopts a motor and electric control two-in-one structure or a motor and speed reducer two-in-one drive mode, and the two drive modes are mechanically connected through a structural member and electrically connected through a switching wire harness; the higher electricity that integrates drives the system and integrates motor, controller and reduction gear into trinity. However, the above arrangement is generally a stacking of physical structures, for example, the controller is arranged above the motor and the reducer, so that the height of the whole three-in-one structure is greatly increased, the occupied space is enlarged accordingly, the integration level is still relatively unsatisfactory, and the requirement of the assembly space of the whole vehicle is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electric drive system with trinity for car in order to overcome the defect that above-mentioned prior art exists, realize the degree of depth integration of controller, reduction gear and motor, promote actuating system's power density, satisfy the market demand.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a trinity electricity system of driving for electric automobile, includes controller, motor and reduction gear, and the motor includes motor casing, is equipped with "8" font opening chamber at motor casing's tail end, the controller is including installation shell, electrical control module and end cover, the installation shell includes the intermediate lamella, and the both sides of intermediate lamella are first box and second box respectively, the second box is the apron in "8" font opening chamber, and the second box forms reduction gear housing with "8" font opening chamber folds the back, electrical control module installs in first box, and electrical control module's output passes the intermediate lamella and connects the motor, the opening part at first box is installed to the end cover.

Further, the electric control module comprises a heat dissipation substrate, a power assembly, a filter, a current sensor and a three-phase output assembly, wherein the filter is attached to the lower surface of the heat dissipation substrate, the power assembly is mounted on the upper surface of the heat dissipation substrate, the output end of the filter is connected with the input end of the power assembly, the three-phase output assembly penetrates through the current sensor and is electrically connected with the output terminal of the power assembly, and the three-phase output assembly is the output end of the electric control module.

Further, the upper surface of heat dissipation base plate is equipped with the rectangle heat dissipation pond, and the bottom in rectangle heat dissipation pond is equipped with inlet port and oil outlet, be equipped with first oil feed passageway and first passageway of producing oil on the lateral wall of first box, when electrical control module installs in first box, first oil feed passageway intercommunication inlet port, first passageway of producing oil intercommunication oil outlet.

Further, first oil inlet passageway and first oil outlet passageway be L shape pipeline, the inlet port or the oil outlet is inserted to the one end of L shape pipeline, the other end is arranged and is extended to the lateral wall of first box along the intermediate lamella.

Further, the end part of the first oil inlet channel and the oil inlet hole are mutually embedded and connected; the end part of the first oil outlet channel is connected with the oil outlet hole in a mutually embedded mode.

Furthermore, the top of intermediate lamella is equipped with the notch, three-phase output assembly passes the notch and connects the motor.

Furthermore, the second box body is connected with the periphery of the 8-shaped opening cavity through bolts.

Furthermore, the motor on be equipped with second oil feed passageway, first oil outlet passageway passes through interface and hose connection second oil feed passageway.

Furthermore, a plurality of support columns are vertically arranged on the middle plate of the first box body, the edge of the heat dissipation substrate is fixed in the first box body through the support columns, and the heat dissipation substrate is parallel to the middle plate.

Furthermore, a bus socket is arranged on the first box body, and the input end of the electrical control module is connected with the bus socket.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses an integrated form design of motor, reduction gear and controller, half casing and the integrated integration die-casting shaping of motor casing and rear end cap of reduction gear, another half casing and the integrated integration die-casting shaping of controller box of reduction gear, when reducing the spare part quantity of system, improved the integrated level of electricity driving system, reduced the volume, the trinity assembly of being convenient for is at the installation of whole car cabin.

2. The controller is internally provided with the integrated modular electric control module, the high-integration control device can be assembled by relying on the heat dissipation substrate by the parts, the structure is simple, the integration level is high, the control device is directly assembled into the box body integrally after the motor and the speed reducer are assembled, the assembly is simplified, and the installation is convenient.

3. The electric control module cools the power component and the filter through the heat dissipation substrate, adopts a three-dimensional heat dissipation structure with an upper layer and a lower layer, has a good heat dissipation effect, and avoids the risk of damaging an electronic power device due to overhigh temperature rise.

4. The motor and the controller are respectively provided with an independent oil cooling heat dissipation channel, the oil cooling heat dissipation channel of the motor and the oil cooling heat dissipation channel of the controller are connected through a hose, the temperature rise of the whole system assembly can be effectively reduced, and the power density of the electric drive system can be further improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the explosion structure of the present invention.

Fig. 3 is a structural schematic view of the mounting case.

Fig. 4 is a structural schematic diagram of the mounting shell at another angle.

Fig. 5 is a schematic structural diagram of the electrical control module.

Fig. 6 is a schematic structural view of a heat dissipation substrate.

Fig. 7 is a schematic structural diagram of a power module.

Reference numerals: 1. the controller, 11, the mounting shell, 111, the first box, 112, the second box, 113, the middle plate, 113a, the notch, 113b, the pillar, 113c, the boss, 114, the first oil inlet channel, 115, the first oil outlet channel, 12, the electrical control module, 121, the heat dissipation substrate, 121-1, the first mounting column, 121-2, the second mounting column, 121a, the heat dissipation pool, 121b, the oil inlet, 121c, the oil outlet, 13, the end cover, 14, the bus socket, 122, the power assembly, 123, the filter, 124, the current sensor, 125, the three-phase output assembly, 2, the motor, 21, the motor housing, 21a, the second oil inlet channel, 21b, the second oil outlet channel, 22, "8" shaped opening cavity, 3, the speed reducer, 4, and the hose.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1, the present embodiment provides a three-in-one electric drive system for an electric vehicle, which includes a controller 1, a motor 2 and a speed reducer 3, and the whole appearance is in a T-shaped structure.

As shown in fig. 2 to 4, the motor 2 includes a motor housing 21, and an opening cavity 22 shaped like a letter "8" is provided at a rear end of the motor housing 21. The controller 1 includes a mounting case 11, an electrical control module 12, and an end cap 13. The mounting case 11 includes a middle plate 113, a first box 111 and a second box 112 are respectively disposed on two sides of the middle plate 113, and the second box 112 is a cover plate of the 8-shaped opening cavity 22. The second box body 112 is connected with the periphery of the 8-shaped opening cavity 22 through bolts, and the second box body 112 and the 8-shaped opening cavity 22 are folded to form a speed reducer shell. The internal parts of the reducer 3 are mounted in the reducer housing. The electric control module 12 is installed in the first box 111, the output end of the electric control module 12 passes through the middle plate 113 to be connected with the motor 2, and the end cover 13 is installed at the opening of the first box 111. The first casing 111 is further provided with a bus bar socket 14, and the input end of the electrical control module 12 is connected with the bus bar socket 14.

As shown in fig. 5 and 6, the electric control module 12 includes a heat dissipation substrate 121, a power component 122, a filter 123, a current sensor 124, and a three-phase output component 125. The filter 123 is attached to the lower surface of the heat dissipation substrate 121; the power component 122 is mounted on the upper surface of the heat dissipation substrate 121. The output of filter 123 is connected to the input of power component 122. The three-phase output component 125 is electrically connected to the output terminal of the power component 122 through the current sensor 124, and the three-phase output component 125 is an output terminal of the electrical control module 12. A notch 113a is formed at the top end of the middle plate 113 of the mounting case 11, and the three-phase output assembly 125 is connected to the internal electronic components of the motor 2 through the notch 113 a. A rectangular heat sink 121a is disposed on the upper surface of the heat sink substrate 121, and an oil inlet 121b and an oil outlet 121c are disposed at the bottom of the rectangular heat sink 121 a. A first oil inlet passage 114 and a first oil outlet passage 115 are provided on the side wall of the first tank 111, and when the electrical control module 12 is installed in the first tank 111, the first oil inlet passage 114 communicates with the oil inlet hole 121b, and the first oil outlet passage 115 communicates with the oil outlet hole 121 c. The method specifically comprises the following steps: a plurality of support posts 113b are vertically provided on the middle plate 113 of the first case 111, an edge of the heat dissipation substrate 121 is fixed in the first case 111 by the support posts 113b, and the heat dissipation substrate 121 is parallel to the middle plate 113. The first oil inlet passage 114 and the first oil outlet passage 115 are each an L-shaped pipe, one end of which is inserted into the oil inlet hole 121b or the oil outlet hole 121c, and the other end of which is disposed along the middle plate 113 and extends to the side wall of the first tank 111. The L-shaped pipeline is connected with the oil inlet hole 121b or the oil outlet hole 121c in a chimeric sealing mode.

The motor 2 is provided with a second oil outlet channel 21b and a second oil inlet channel 21a, and the first oil outlet channel 115 is connected with the second oil inlet channel 21a through a connector and the hose 4. During operation, cooling oil enters from the first oil inlet channel 114 and exits from the first oil outlet channel 115 to complete cooling of the electric control module 12 of the controller 1; the cooling oil enters from the second oil inlet channel 21a through the hose 4, and the second oil outlet channel 21b exits, so that the motor 2 is cooled.

As shown in fig. 7, the filter 123 is a square, the cover is provided with an input copper bar and an output copper bar on the side edge of the filter 123, the input copper bar is formed by combining a positive copper bar and a negative copper bar and is T-shaped, the output copper bar is a stacked copper bar, one end of the output copper bar is provided with six output terminals arranged side by side, the output terminals are electrically connected with the input terminals of the power assembly 122, and the input end copper bar is connected with the bus socket 14, which is the input end of the electrical control module 12.

The specific assembly process of this embodiment is as follows:

first, the electrical control module 12 is preassembled. A sealing ring is laid around the heat sink 121a of the heat dissipation substrate 121, and the power assembly 122 is locked above the heat sink 121a by bolts. Then, the PCB circuit board of the power module 122 is fixed to the first mounting post 121-1 of the heat dissipation substrate 121 by a bolt. Next, the three-phase output component 125 is fixed to the second mounting post 121-2 of the heat dissipation substrate 121, and its input terminal is electrically connected to the output terminal of the power component 122 through the current sensor 124. Next, a heat conductive pad is laid on the mounting surface of the filter 123, the filter 123 is fixed to the lower end surface of the heat dissipation substrate 121 by a bolt, and the output terminal thereof is electrically connected to the input terminal of the power module 122.

Secondly, a three-in-one electric drive system is assembled. The reduction gear mechanism of the reducer 3 is installed in the 8-shaped opening cavity 22 of the rear end cover 13 of the motor 2. Then the second box 112 is mounted at the opening of the 8-shaped open cavity 22 to realize the sealing of the reducer. Next, the electric control module 12 is placed on the bottom of the first case 111, and the heat dissipation substrate 121 of the electric control module 12 is fixed to the support column 113b in the first case 111 by a bolt. Next, the three-phase output module 125 is fixed to the boss 113c in the first case 111 by bolts. Then, the bus bar socket 14 is mounted on the side wall of the first case 111, and its terminal is electrically connected to the input terminal copper bar of the filter 123.

Finally, the end cap 13 is mounted to the opening of the first case 111. Then, the first oil outlet passage 115 and the second oil inlet passage 21a are connected by the hose 4, and the hose 4 is locked with the anchor ear.

To this end, the assembly of the highly integrated three in one electric drive system of the present embodiment is completed.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a trinity electric drive system for electric automobile, includes controller (1), motor (2) and reduction gear (3), its characterized in that, motor (2) include motor casing (21), are equipped with "8" font open cavity (22) at the tail end of motor casing (21), controller (1) is including installation shell (11), electric control module (12) and end cover (13), installation shell (11) are including intermediate lamella (113), and the both sides of intermediate lamella (113) are first box (111) and second box (112) respectively, second box (112) are the apron of "8" font open cavity (22), and second box (112) and "8" font open cavity (22) fold the back and form the reduction gear casing, electric control module (12) are installed in first box (111), and electric control module's (12) output passes intermediate lamella (113) and connects motor (2), the end cover (13) is arranged at an opening of the first box body (111).

2. The three-in-one electric drive system for the electric vehicle as recited in claim 1, wherein the electric control module (12) comprises a heat dissipation substrate (121), a power assembly (122), a filter (123), a current sensor (124) and a three-phase output assembly (125), the filter (123) is attached to the lower surface of the heat dissipation substrate (121), the power assembly (122) is mounted on the upper surface of the heat dissipation substrate (121), the output end of the filter (123) is connected to the input end of the power assembly (122), the three-phase output assembly (125) passes through the current sensor (124) and is electrically connected to the output terminal of the power assembly (122), and the three-phase output assembly (125) is the output end of the electric control module (12).

3. The three-in-one electric driving system for the electric vehicle as claimed in claim 2, wherein a rectangular heat dissipation pool (121a) is disposed on an upper surface of the heat dissipation substrate (121), an oil inlet hole (121b) and an oil outlet hole (121c) are disposed at a bottom of the rectangular heat dissipation pool (121a), a first oil inlet channel (114) and a first oil outlet channel (115) are disposed on a side wall of the first box (111), and when the electric control module (12) is installed in the first box (111), the first oil inlet channel (114) communicates with the oil inlet hole (121b) and the first oil outlet channel (115) communicates with the oil outlet hole (121 c).

4. The three-in-one electric drive system for the electric vehicle as claimed in claim 3, wherein the first oil inlet passage (114) and the first oil outlet passage (115) are both L-shaped pipes, one end of each L-shaped pipe is inserted into the oil inlet hole (121b) or the oil outlet hole (121c), and the other end of each L-shaped pipe is arranged along the middle plate (113) and extends to the side wall of the first box (111).

5. The three-in-one electric drive system for the electric vehicle as claimed in claim 3, wherein the end of the first oil inlet passage (114) and the oil inlet hole (121b) are connected to each other in a fitting manner; the end of the first oil outlet passage (115) and the oil outlet hole (121c) are fitted and connected to each other.

6. The three-in-one electric drive system for an electric vehicle as set forth in claim 2 wherein the top end of the intermediate plate (113) is provided with a notch (113a), and the three-phase output assembly (125) is connected to the electric motor (2) through the notch (113 a).

7. The three-in-one electric drive system for the electric automobile according to claim 1, wherein the second box body (112) is connected with the periphery of the 8-shaped open cavity (22) through bolts.

8. The three-in-one electric drive system for the electric automobile according to claim 3, wherein a second oil inlet channel (21a) is arranged on the motor (2), and the first oil outlet channel (115) is connected with the second oil inlet channel (21a) through a connector and a hose (4).

9. The three-in-one electric drive system for the electric vehicle as recited in claim 2, wherein a plurality of support posts (113b) are vertically disposed on the middle plate (113) of the first casing (111), the edge of the heat dissipating substrate (121) is fixed in the first casing (111) by the support posts (113b), and the heat dissipating substrate (121) is parallel to the middle plate (113).

10. The three-in-one electric drive system for the electric vehicle as claimed in claim 1, wherein a bus socket (14) is provided on the first casing (111), and an input end of the electric control module (12) is connected to the bus socket (14).