CN117254701A - Double-inverter shell, double-inverter and electric drive system - Google Patents

Double-inverter shell, double-inverter and electric drive system Download PDF

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Publication number
CN117254701A
CN117254701A CN202311513589.0A CN202311513589A CN117254701A CN 117254701 A CN117254701 A CN 117254701A CN 202311513589 A CN202311513589 A CN 202311513589A CN 117254701 A CN117254701 A CN 117254701A
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CN
China
Prior art keywords
cavity
inverter
wire harness
module
double
Prior art date
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Granted
Application number
CN202311513589.0A
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Chinese (zh)
Other versions
CN117254701B (en
Inventor
吴俊�
喻皓
梁文博
方南
朱旭
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GAC Aion New Energy Automobile Co Ltd
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GAC Aion New Energy Automobile Co Ltd
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Priority to CN202311513589.0A priority Critical patent/CN117254701B/en
Publication of CN117254701A publication Critical patent/CN117254701A/en
Application granted granted Critical
Publication of CN117254701B publication Critical patent/CN117254701B/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/0094—Structural association with other electrical or electronic devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Frames (AREA)
  • Inverter Devices (AREA)

Abstract

The invention discloses a double inverter shell, which comprises a cover plate and a main shell, wherein the cover plate is arranged above the main shell, a first module cavity, a second module cavity and a wire harness cavity are arranged in the main shell, the wire harness cavity is positioned on the central line of the main shell and is positioned on one side edge of the main shell, the first module cavity and the second module cavity are symmetrically arranged along the central line, the first module cavity and the second module cavity are connected through a connecting bridge, and the connecting bridge is arched and protrudes towards the inside of the main shell. The invention also discloses a double inverter and an electric drive system. According to the invention, the first module cavity, the second module cavity and the wire harness cavity are integrated into a whole, so that the structure of the double inverter is more compact, the weight and the volume are reduced, and the vehicle cruise mileage is improved. The first module cavity and the second module cavity are connected through the arched connecting bridge, so that the size of the double-inverter shell is further reduced while the materials are saved, and the structural strength and the rigidity of the shell are improved.

Description

Double-inverter shell, double-inverter and electric drive system
Technical Field
The invention relates to the technical field of inverters, in particular to a double-inverter shell, a double-inverter and an electric drive system.
Background
With the rapid rise of the new energy automobile industry, the performance and efficiency of the vehicle electric drive system become important factors for determining the vehicle performance and cruising ability. The inverter housing is an important component of the electric drive system, and its structure and function have important influence on the performance and stability of the whole system.
The existing double-inverter shell is generally composed of two independent inverter shells, wherein the two inverter shells are respectively and independently provided with an inverter module, and wire harnesses of the two inverter modules are led out respectively and then connected with a motor. The double inverter with the structure has the advantages of complex overall structure, large weight and volume, limitation of the endurance mileage of the vehicle, long wire harness and high cost.
Therefore, there is a need for a dual inverter housing, dual inverter and electric drive system that is compact in structural layout, low in weight and volume, and low in cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a double-inverter shell, a double-inverter and an electric drive system which are compact in structural layout, small in weight and volume and low in cost.
The technical scheme of the invention provides a double inverter shell, which comprises a cover plate and a main shell, wherein the cover plate is arranged above the main shell, a first module cavity, a second module cavity and a wire harness cavity are arranged in the main shell, the wire harness cavity is positioned on the central line of the main shell and at one side of the main shell, the first module cavity and the second module cavity are symmetrically arranged along the central line, the first module cavity and the second module cavity are connected through a connecting bridge, and the connecting bridge is arched and protrudes towards the inside of the main shell.
Further, a plurality of reinforcing ribs are arranged on the outer surface of the connecting bridge.
Further, a plurality of connection mounting points are arranged on the edge side edge of the main shell on one side where the wire harness cavity is located, and the connection mounting points are used for being connected with the motor shell.
Further, the main shell is further provided with an electric control plug-in cavity, the electric control plug-in cavity is located at the corner of the main shell, the bottom of the electric control plug-in cavity is provided with a plug-in port, the electric control plug-in cavity further comprises an inner baffle, the bottom of the inner baffle is connected with the bottom surface of the main shell, and a gap is reserved between the top of the inner baffle and the cover plate.
Further, an inner concave part is arranged on the outer wall surface of the corner and adjacent to the electric control plug-in cavity, and a plurality of reinforcing ribs are arranged at the inner concave part.
Further, the side of the main shell is provided with a concave ventilation valve port, the ventilation valve port is provided with a valve cover, and the valve cover is flush with the outer wall surface of the main shell.
Further, the side in first module chamber with the second module chamber respectively is equipped with a switching support, the switching support is used for being connected with motor housing, the switching support includes motor fixed plate and cantilever beam, be equipped with transverse mounting point on the motor fixed plate, transverse mounting point with motor housing connects, be equipped with Z to the mounting point on the cantilever beam, Z to the mounting point with Z to fixed connection is followed to the main casing.
The invention also provides a double inverter, which comprises the double inverter shell, a first inverter module, a second inverter module, a first wire harness group and a second wire harness group, wherein the first inverter module is arranged in the first module cavity, the second inverter module is arranged in the second module cavity, one end of the first wire harness group is connected with the first inverter module, the other end of the first wire harness group stretches into the wire harness cavity, one end of the second wire harness group is connected with the second inverter module, and the other end of the second wire harness group stretches into the wire harness cavity.
Further, the first wire harness group and the second wire harness group each include a first wire harness section, a second wire harness section and a third wire harness section, the first wire harness section is arranged transversely along edges of the first module cavity and the second module cavity, the second wire harness section is arranged longitudinally along edges of the wire harness cavity, the third wire harness section penetrates through the wire harness cavity to be arranged in the Z direction, and the third wire harness section is used for being electrically connected with a motor.
The invention also provides an electric drive system, which comprises the double inverter as described in any one of the above, and further comprises a double motor, wherein the double inverter is arranged above the double motor.
After the technical scheme is adopted, the method has the following beneficial effects:
according to the invention, the first module cavity, the second module cavity and the wire harness cavity are integrated into a whole, so that the structure of the double inverter is more compact, the weight and the volume are reduced, and the vehicle cruise mileage is improved. The first module cavity and the second module cavity are connected through the arched connecting bridge, so that the size of the double-inverter shell is further reduced while the materials are saved, and the structural strength and the rigidity of the shell are improved.
Drawings
The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention. In the figure:
FIG. 1 is a top view of an electro-drive system according to an embodiment of the present invention;
FIG. 2 is a side view of an electro-drive system in accordance with an embodiment of the present invention;
FIG. 3 is a schematic illustration of a dual inverter housing with cover plates omitted in an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of the first wire harness and the second wire harness in an embodiment of the present invention;
FIG. 5 is a schematic view of a bottom view of a dual inverter housing according to an embodiment of the present invention;
FIG. 6 is a schematic view of another bottom view of a dual inverter housing according to an embodiment of the present invention;
FIG. 7 is an enlarged view of a portion of an electrically controlled jack in accordance with one embodiment of the present invention;
FIG. 8 is a schematic view of a transfer bracket according to an embodiment of the present invention;
FIG. 9 is an enlarged view of a portion of a view of a transition support in accordance with an embodiment of the present invention;
fig. 10 is an enlarged view of a portion of an alternate view of a transition support in accordance with an embodiment of the present invention.
Reference numeral control table:
double inverter case 10:
main housing 1: the electric control plug-in cavity comprises a first module cavity 11, a second module cavity 12, a wire harness cavity 13, a connecting bridge 14, a reinforcing rib 141, a connecting mounting point 15, an electric control plug-in cavity 16, a plug-in port 161, an inner baffle 162, an inner concave part 17, a reinforcing rib 171, a ventilation valve port 18, a switching support 19, a motor fixing plate 191, a cantilever beam 192, a first step surface 1911, a second step surface 1912, an upper rib 1921, a lower rib 1922, a first Z-direction mounting position 101 and a second Z-direction mounting position 102;
the cover plate 2, the first wire harness group 3, the second wire harness group 4, the first wire harness section A, the second wire harness section B, the third wire harness section C and the valve cover 5;
dual motor housing 20: a circular housing 201.
Detailed Description
Specific embodiments of the present invention will be further described below with reference to the accompanying drawings.
It is to be readily understood that, according to the technical solutions of the present invention, those skilled in the art may replace various structural modes and implementation modes with each other without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.
Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms.
Embodiment one:
in an embodiment of the present invention, as shown in fig. 1-3, a dual inverter housing 10 includes a cover plate 2 and a main housing 1, the cover plate 2 is disposed above the main housing 1, a first module cavity 11, a second module cavity 12 and a harness cavity 13 are disposed inside the main housing 1, the harness cavity 13 is located on a center line L of the main housing 1 and is located at one side of the main housing 1, the first module cavity 11 and the second module cavity 12 are symmetrically disposed along the center line L, the first module cavity 11 and the second module cavity 12 are connected by a connecting bridge 14, and the connecting bridge 14 is arched and protrudes toward the inside of the main housing 1.
Specifically, as shown in fig. 2, the double inverter case 10 includes a cover plate 2 and a main case 1, and the cover plate 2 is provided above the main case 1 and is connected to the main case 1 by a plurality of bolts.
As shown in fig. 3, the inside of the main casing 1 is a hollow structure for mounting each functional element of the inverter. In fig. 3, the main housing 1 is in a left-right symmetrical structure based on a center line L, a first module chamber 11 is disposed on the left side of the center line L, a second module chamber 12 is disposed on the right side of the center line L, the first module chamber 11 is used for mounting a first inverter module, and the second module chamber 12 is used for mounting a second inverter module.
The harness cavity 13 is located in the middle of one side of the main housing 1, that is, in the middle of the front sides of the first module cavity 11 and the second module cavity 12 in fig. 3. The harness chamber 13 is used for installing the harness group gathered from the first module chamber 11 and the second module chamber 12, and for connecting the harness group together to the motor side.
In the embodiment, the first module cavity 11, the second module cavity 12 and the wire harness cavity 13 are integrated into a whole, so that the structure of the double inverter is more compact, the weight and the volume are reduced, and the vehicle cruise mileage is improved.
And, pencil cavity 13 is located the middle part position, is convenient for arrange pencil group concentrate, makes compact structure, and the terminal box of integration is also convenient for design to the motor side that corresponds. The length of the wire harness group can be shortened, and the cost is reduced.
As shown in fig. 3 and 5, the first module chamber 11 and the second module chamber 12 are connected by a connecting bridge 14, and the connecting bridge 14 is arched and protrudes toward the inside of the main casing 1. The inner surface of the connecting bridge 14 in fig. 3 protrudes between the first module chamber 11 and the second module chamber 12. The outer surface of the bridge 14 in fig. 5 is arched upwards, forming a concave structure.
The connecting bridge 14 can save material for manufacturing the double inverter case and serves to further reduce the double inverter case. In addition, the structural strength and rigidity of the housing are facilitated by the arch-like structure of the bridge 14.
Preferably, as shown in fig. 5, the outer surface of the connecting bridge 14 is provided with a plurality of reinforcing ribs 141, and the reinforcing ribs 141 serve to further reinforce the structural strength and rigidity of the housing, and do not occupy the space in the Z direction (up-down direction of fig. 5) and the Y direction (left-right direction of fig. 5).
Further, as shown in fig. 1 and 3, a plurality of connection mounting points 15 are provided on the edge side of the main housing 1 on the side where the harness cavity 13 is located, the connection mounting points 15 being for connection with the double motor housing 20.
Specifically, in the present embodiment, there are 5 connection mounting points 15, 1 of which is provided on the side of the harness cavity 13; the other 4 are provided on the side of the main housing 1, and these 4 attachment points 15 are located at the same height and higher than the positions of the attachment points 15 on the harness cavity 13. Thus, the 5 connecting mounting points 15 form a triangular arrangement, increasing the mounting stability and shortening the Z-direction space.
Alternatively, the connecting mounting points 15 may be provided in other numbers and may be provided at other positions of the main casing 1 for connection with the double motor casing 20.
Further, as shown in fig. 3 and 7, the main casing 1 is further provided with an electric control plugging cavity 16, the electric control plugging cavity 16 is located at a corner of the main casing 1, an plugging port 161 is formed at the bottom of the electric control plugging cavity 16, the electric control plugging cavity 16 further comprises an inner baffle 162, the bottom of the inner baffle 162 is connected with the bottom surface of the main casing 1, and a gap is reserved between the top of the inner baffle 162 and the cover plate 2.
Specifically, in this embodiment, two electrically controlled plugging cavities 16 are symmetrically disposed at the left and right corners of the main housing 1. The bottom of the electric control plug-in cavity 16 is provided with a plug-in port 161, the plug-in port 161 is used for installing a plug-in terminal, and the plug-in terminal is used for plugging in an external plug-in connector. The inside of automatically controlled grafting chamber 16 is equipped with interior baffle 162, and the bottom of interior baffle 162 is sealed with the bottom surface of main casing 1 and is connected for automatically controlled grafting chamber 16 forms a sunken cavity, because the inside and outside temperature difference of dc-to-ac converter casing, produces the comdenstion water easily in the automatically controlled grafting chamber 16, and automatically controlled grafting chamber 16 can effectively block the condensation, reduces the corruption influence of steam to the electric control board way of installing inside main casing 1. A gap is left between the top of the inner baffle 162 and the cover plate 2, so that the electric wires can pass through the gap and are connected to the electric components inside the main casing 1.
Preferably, the outer surface of the electrically controlled socket cavity 16 is chamfered, so that the peripheral pipelines of the inverter housing are arranged along the outer surface of the electrically controlled socket cavity 16.
Further, as shown in fig. 3 and 5, an inner recess 17 is provided on the outer wall surface at the corner adjacent to the electric control jack cavity 16, and a plurality of reinforcing ribs 171 are provided at the inner recess 17.
The design of the concave portion 17 can avoid the assembly gap with the vehicle body and save the peripheral pipeline design path. The embedded reinforcement rib 171 can increase the structural strength of the concave portion 17 and does not occupy excessive space.
Further, as shown in fig. 8-9, a concave ventilation valve port 18 is formed on the side surface of the main casing 1, and a valve cover 5 is mounted on the ventilation valve port 18, and the valve cover 5 is flush with the outer wall surface of the main casing 1.
The ventilation valve port 18 is used for installing an electric control ventilation valve, and an embedded design is adopted, so that damage to peripheral parts caused by large-range injection of flame burnt by electric control faults can be prevented.
Further, as shown in fig. 8-10, a transfer bracket 19 is respectively disposed on the side surfaces of the first module cavity 11 and the second module cavity 12, the transfer bracket 19 is used for being connected with the dual-motor housing 20, the transfer bracket 19 includes a motor fixing plate 191 and a cantilever beam 192, a transverse mounting point is disposed on the motor fixing plate 191 and is connected with the dual-motor housing 20, a Z-direction mounting point is disposed on the cantilever beam 192, and the Z-direction mounting point is fixedly connected with the main housing 1 along the Z-direction.
Specifically, as shown in fig. 8, the double motor housing 20 includes a circular casing 201; be equipped with first Z to installation position 101 and second Z to installation position 102 on the outer wall of main casing 1, switching support 19 includes motor fixed plate 191 and cantilever beam 192, is equipped with transverse mounting point on the motor fixed plate 191, and transverse mounting point passes through the bolt and is connected with circular housing 201 in the transverse direction, and cantilever beam 192 extends in the transverse direction, and cantilever beam 192's stiff end is connected with motor fixed plate 191, and the Z to mounting point of cantilever end passes through the bolt along Z to be connected with first Z to installation position 101.
The Z-direction fixing is carried out by adopting the switching support 19, so that the difficulty and cost of the die sinking process of the main shell 1 can be effectively saved, and the fixing direction can be skillfully changed from X-direction fixing to Z-direction fixing.
The second Z-direction installation site 102 is connected with the circular housing 201 in the Z-direction by bolts, further increasing the connection stability between the double inverter case 10 and the double motor case 20.
Preferably, as shown in fig. 10, the motor fixing plate 191 includes a first step surface 1911 and a second step surface 1912, which are staggered by a certain distance in the transverse direction to form a zigzag structure, and each step surface is provided with a bolt hole for connecting with the circular housing 201 to increase the connection stability with the dual-motor housing 20 in order to match the shape of the outer side surface of the circular housing 201.
Preferably, as shown in fig. 9, the cantilever beam 192 is provided with an upper rib 1921 and a lower rib 1922 at one end (fixed end) close to the motor fixing plate 191, so as to form a triangular cantilever structure, and the structural strength of the cantilever beam 192 is increased.
In this embodiment, the first module cavity 11, the second module cavity 12 and the wire harness cavity 13 are integrated into a whole, so that the structure of the dual inverter housing 10 is more compact, the weight and the volume are reduced, and the vehicle cruise mileage is improved. The first module cavity 11 and the second module cavity 12 are connected through the arched connecting bridge 14, so that the size of the double-inverter shell 10 is further reduced while the material is saved, and the structural strength and the rigidity of the shell are improved.
Embodiment two:
as shown in fig. 3, the double inverter includes a double inverter housing 10 in the first embodiment and its modification, and further includes a first inverter module (not shown), a second inverter module (not shown), a first wire harness 3 and a second wire harness 4, the first inverter module is installed in a first module cavity 11, the second inverter module is installed in a second module cavity 12, one end of the first wire harness 3 is connected to the first inverter module, the other end extends into the wire harness cavity 13, one end of the second wire harness 4 is connected to the second inverter module, and the other end extends into the wire harness cavity 13.
The wire harness cavity 13 can collect the first wire harness group 3 and the second wire harness group 4 together, and then is electrically connected with the motor side, so that the arrangement length of the wire harness is shortened, the electrical connection mode with the motor is simplified, and the double motors can share one high-voltage wire harness box.
Further, as shown in fig. 4, the first wire harness 3 and the second wire harness 4 each include a first wire harness section a, a second wire harness section B, and a third wire harness section C, the first wire harness section a being arranged laterally along edges of the first module chamber 11 and the second module chamber 12, the second wire harness section B being arranged longitudinally along edges of the wire harness chamber 13, the third wire harness section C being arranged in the Z direction through the wire harness chamber 13, the third wire harness section C being for electrical connection with the motor.
Specifically, the first harness segment a, the second harness segment B, and the third harness segment C are substantially linear-segment harnesses. The first wire harness section A is connected with the first inverter module and the second inverter module and then is transversely arranged along the edges of the first module cavity 11 and the second module cavity 12, the other end of the first wire harness section A is connected with the second wire harness section B, after the second wire harness section B is bent to a vertical state relative to the first wire harness section A, the second wire harness section B is longitudinally arranged along the edge of the wire harness cavity 13, the other end of the second wire harness section B is connected with the third wire harness section C, after the third wire harness section C is bent to a vertical state relative to the second wire harness section B, the third wire harness section C passes through the wire harness cavity 13 and is arranged along the Z direction, and the other end of the third wire harness section C is electrically connected with the motor side.
Since the first wire harness 3 and the second wire harness 4 are substantially of straight-line segment design, the length of the wire harness can be saved.
In this embodiment, the first wire harness group 3 and the second wire harness group 4 are three-phase wires, and each wire has a different length, and the mounting positions of the two ends of each wire are different, but the arrangement directions and positions are similar.
Embodiment III:
as shown in fig. 1-2, the electric drive system includes the double inverter in the second embodiment and its modification, and further includes a double motor, and the double inverter is installed above the double motor. In fig. 1, the double inverter housing 10 is mounted above the double motor housing 20, and the double inverter housing 10 is connected to the double motor housing 20 through 5 connection mounting points 15 at one side of the harness cavity 13. In fig. 2, the left and right side surfaces of the double inverter case 10 are connected to the double motor case 20 via the adapter bracket 19.
Preferably, a connecting mounting point is also provided on the opposite side of the harness cavity 13 for connection with the dual motor housing 20.
The inverter module is internally installed in the double inverter housing 10, two groups of wire harness groups are integrally arranged through the wire harness cavity 13, and the wire harness groups are introduced into the double motor housing 20 through the bottom of the wire harness cavity 13 and are connected with motors in the double motor housing 20.
The electric drive system in the embodiment has compact overall structure and reasonable wiring, can reduce the overall mass and volume of the electric drive system, and is beneficial to improving the endurance mileage of the electric car.
What has been described above is merely illustrative of the principles and preferred embodiments of the present invention. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the invention and should also be considered as the scope of protection of the present invention.

Claims (10)

1. The utility model provides a two dc-to-ac converter casings, its characterized in that, includes apron and main casing, the apron lid is established the top of main casing, the inside of main casing is equipped with first module chamber, second module chamber and pencil cavity, the pencil cavity is located on the central line of main casing and be located a side of main casing, first module chamber with second module chamber is followed central line symmetry arranges, first module chamber with connect through the connecting bridge between the second module chamber, the connecting bridge is arch-shaped, and towards the inside of main casing is protruding.
2. The double inverter housing according to claim 1, wherein the main housing is further provided with an electric control plugging cavity, the electric control plugging cavity is located at a corner of the main housing, an plugging port is formed in the bottom of the electric control plugging cavity, the electric control plugging cavity further comprises an inner baffle, the bottom of the inner baffle is connected with the bottom surface of the main housing, and a gap is reserved between the top of the inner baffle and the cover plate.
3. The dual inverter housing of claim 2, wherein an inner recess is formed in an outer wall surface of the corner adjacent to the electrically controlled socket cavity, and a plurality of reinforcing ribs are formed in the inner recess.
4. The dual inverter housing of claim 1, wherein each of the sides of the first and second module cavities is provided with a transfer bracket for connection with the motor housing, the transfer brackets including a motor mounting plate and a cantilever beam, the motor mounting plate being provided with a transverse mounting point, the transverse mounting point being connected with the motor housing, the cantilever beam being provided with a Z-direction mounting point, the Z-direction mounting point being fixedly connected with the main housing in the Z-direction.
5. The double inverter casing according to claim 1, wherein the side surface of the main casing is provided with an air-permeable valve port which is concave, and a valve cover is mounted on the air-permeable valve port, and the valve cover is flush with the outer wall surface of the main casing.
6. The double inverter casing according to claim 1, wherein the outer surface of the connection bridge is provided with a plurality of reinforcing ribs.
7. The double inverter casing according to claim 1, wherein a plurality of connection mounting points for connection with a motor casing are provided on an edge side of the main casing on a side where the harness cavity is located.
8. A double inverter, comprising the double inverter housing of any one of claims 1-7, further comprising a first inverter module, a second inverter module, a first wire harness group and a second wire harness group, wherein the first inverter module is installed in the first module cavity, the second inverter module is installed in the second module cavity, one end of the first wire harness group is connected with the first inverter module, the other end of the first wire harness group extends into the wire harness cavity, one end of the second wire harness group is connected with the second inverter module, and the other end of the second wire harness group extends into the wire harness cavity.
9. The dual inverter of claim 8, wherein the first and second wire harness groups each comprise a first wire harness segment disposed laterally along an edge of the first and second module cavities, a second wire harness segment disposed longitudinally along an edge of the harness cavity, and a third wire harness segment disposed in a Z-direction through the harness cavity, the third wire harness segment for electrical connection with a motor.
10. An electric drive system comprising the dual inverter of any of claims 8-9, and further comprising a dual motor, the dual inverter being mounted above the dual motor.
CN202311513589.0A 2023-11-14 2023-11-14 Double-inverter shell, double-inverter and electric drive system Active CN117254701B (en)

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CN202311513589.0A CN117254701B (en) 2023-11-14 2023-11-14 Double-inverter shell, double-inverter and electric drive system

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