CN112953348B - Dual-motor inverter and automobile - Google Patents
Dual-motor inverter and automobile Download PDFInfo
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- CN112953348B CN112953348B CN202110097508.8A CN202110097508A CN112953348B CN 112953348 B CN112953348 B CN 112953348B CN 202110097508 A CN202110097508 A CN 202110097508A CN 112953348 B CN112953348 B CN 112953348B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
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- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a double-motor inverter and an automobile, and belongs to the technical field of automobiles. The double-motor inverter comprises a box body; the first power module and the second power module are arranged on the box body side by side; the direct current bus capacitor is positioned at the bottom end of the second power module; the first direct current wire holder and the second direct current wire holder are arranged on the direct current side of the first power module, and the second direct current wire holder is arranged on the direct current side of the second power module; the direct current connector and the alternating current connector are arranged on the periphery of the box body; an electromagnetic filter mounted on the case; the first alternating current wire holder is arranged on the alternating current side of the first power module, and the second alternating current wire holder is arranged on the alternating current side of the second power module; the first driving plate and the second driving plate are connected with the box body through two grounding busbar, and discharge resistors are arranged on the first driving plate and the second driving plate. The advantages are that: the integrated level is higher and the electromagnetic compatibility is better.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a double-motor inverter and an automobile.
Background
Because the pure electric vehicle has the defects of longer charging time, shorter endurance mileage, inconvenient charging and the like, the hybrid electric vehicle has become a hot spot for the dispute development of various large vehicle enterprises and related institutions. The motor inverter is one of the key parts of the hybrid electric vehicle, and needs to meet higher requirements, namely, smaller installation space, higher environmental temperature and higher vibration level.
However, the motor inverter of the existing hybrid electric vehicle has larger volume and lower integration level, and is not beneficial to the arrangement of the whole vehicle; and the filter design in the motor inverter is unreasonable, so that the electromagnetic compatibility of the motor inverter is poor.
In view of the foregoing, there is a need to design a dual-motor inverter and an automobile to solve the above problems.
Disclosure of Invention
An object of the present invention is to provide a dual-motor inverter, which has a compact structure, a high integration level and a good electromagnetic compatibility.
To achieve the purpose, the invention adopts the following technical scheme:
a dual motor inverter comprising:
the box body is provided with a retaining wall structure;
the first power module and the second power module are arranged on the box body side by side;
the direct current bus capacitor is arranged on the box body and is positioned at the bottom end of the second power module;
the first direct current wire holder is arranged on the direct current side of the first power module and used for connecting the direct current bus capacitor with the first power module, and the second direct current wire holder is arranged on the direct current side of the second power module and used for connecting the direct current bus capacitor with the second power module;
the direct current connector and the alternating current connector are arranged on the periphery of the box body, and the direct current connector and the first power module are respectively positioned on two sides of the retaining wall structure;
the electromagnetic filter is arranged on the box body and is used for connecting the direct-current connector with the first direct-current wire holder;
the first alternating current wire holder is arranged on the alternating current side of the first power module and used for connecting an alternating current busbar of a driving motor of an automobile with the first power module so that the first alternating current wire holder is connected with the alternating current busbar of the driving motor, and the second alternating current wire holder is arranged on the alternating current side of the second power module and used for connecting the alternating current connector with the second power module;
the first driving plate and the second driving plate are arranged on the first power module, the second driving plate is arranged on the second power module, the first driving plate and the second driving plate are connected with the box body through two grounding busbar, and a plurality of discharge resistors are arranged on the first driving plate and the second driving plate.
Preferably, the dual motor inverter further includes:
the upper cover is arranged at the top end of the box body;
the control panel, it sets up the top of upper cover, the control panel all with first drive plate reaches the second drive plate electricity is connected, just the control panel with first drive plate passes through board to board connector and is connected.
Preferably, the first dc link seat and the second dc link seat are respectively disposed on a dc side of the first power module and a dc side of the second power module by an insert injection molding process.
Preferably, the structure of the first direct current wire holder is a laminated busbar structure.
Preferably, a cooling water channel connected in series is arranged at the bottom of the box body, so as to cool the first power module and the second power module.
Preferably, the cooling water channel includes:
a first power module water channel for cooling the first power module;
the second power module water channel is used for cooling the second power module, and heat conducting glue is coated between the second power module water channel and the heat radiating aluminum plate of the direct current bus capacitor so as to be used for cooling the direct current bus capacitor;
the main tank water channel is used for being connected in series with the first power module water channel and the second power module water channel, the main tank water channel comprises two cylindrical water channels and a semi-cylindrical water channel, the cylindrical water channel and the semi-cylindrical water channel are formed through die casting, the main tank water channel is sealed with the first power module water channel and the second power module water channel through O-shaped sealing rings, and the back of the semi-cylindrical water channel is sealed through a water channel sealing cover and a water channel sealing ring.
Preferably, the first ac wire holder and the second ac wire holder are respectively disposed on an ac side of the first power module and an ac side of the second power module by an insert injection molding process.
Preferably, the dual motor inverter further includes:
the alternating current side of the first power module and the alternating current side of the second power module are both provided with the current sensor, and the control board is electrically connected with the current sensor.
Preferably, the dual motor inverter further includes:
the wire harness fixing seat is used for fixing the wire harness in the double-motor inverter.
Another object of the present invention is to provide an automobile, which includes a dual-motor inverter having the characteristics of compact structure, high integration level and good electromagnetic compatibility.
To achieve the purpose, the invention adopts the following technical scheme:
an automobile comprises a driving motor, a generator and a double-motor inverter as described above, wherein the double-motor inverter is arranged between the driving motor and the generator.
The beneficial effects of the invention are as follows:
the first power module and the second power module are arranged on the box body side by side, and the direct current bus capacitor is positioned at the bottom end of the second power module, so that the whole direct current bus capacitor is just positioned in a sunken area between a driving motor in an automobile and two motors of the generator, the space is greatly saved, and the arrangement is more convenient and compact; the plurality of discharge resistors are integrally arranged on the first driving plate and the second driving plate, so that the number of parts is reduced, the assembly time is saved, and the structure is further compact; the first alternating current wiring seat is arranged on the alternating current side of the first power module, so that the alternating current busbar extending out of the first alternating current wiring seat is directly connected with the alternating current busbar of the driving motor, an alternating current high-voltage connector is not required to be additionally arranged, the production cost is reduced, the arrangement space of the whole automobile is saved, the structure is further compact, and the integration level of the whole double-motor inverter is higher; meanwhile, the electromagnetic filter is arranged on the box body, and the first power module and the direct current connector are separated into two areas through the retaining wall structure on the box body, so that the first power module can be prevented from crossing the electromagnetic filter to cause electromagnetic interference to the direct current connector, and the electromagnetic compatibility of the double-motor inverter is improved; and make first drive plate and second drive plate all be connected with the box through two ground connection female rows, can make first drive plate and second drive plate carry out abundant ground connection, further make the electromagnetic compatibility of bi-motor dc-to-ac converter better.
Drawings
Fig. 1 is a top view (with upper cover and top cover removed) of a dual motor inverter provided by the present invention;
FIG. 2 is a partially exploded schematic illustration of a dual motor inverter provided by the present invention;
FIG. 3 is a schematic view of a cooling water channel according to the present invention;
fig. 4 is a rear view of a dual motor inverter provided by the present invention;
fig. 5 is a schematic view of the structure of the main tank waterway provided by the invention.
Reference numerals illustrate:
1-a box body; 2-direct current bus capacitor; 3-a first power module; 4-a second power module; 5-a first drive plate; 6-a second drive plate; 7-a first direct current wire holder; 8-a second direct current wire holder; 9-a first alternating current wire holder; 10-a second alternating current wiring seat; 11-a current sensor; 12-an electromagnetic filter; 13-a first ground busbar; 14-a second grounding busbar; 15-an ac connector; a 16-dc connector; 17-a water inlet pipe; 18-a water outlet pipe; 19-an upper cover; 20-control panel; 21-a top cover; 22-a first power module waterway; 23-a second power module waterway; 24-a main box water channel; 241-cylindrical waterways; 242-semi-cylindrical waterways; 25-a water channel sealing cover; 26-a water channel sealing ring; 27-low voltage connector.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise. Like reference numerals refer to like elements throughout the specification.
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the invention more clear, the technical scheme of the invention is further described below by a specific embodiment in combination with the attached drawings.
In this embodiment, a dual-motor inverter and an automobile including the dual-motor inverter are provided, and the automobile further includes two motors, namely a driving motor and a generator; the whole double-motor inverter is arranged in the space between the driving motor and the generator, so that the structure of the whole double-motor inverter is compact, the integration level is high, and the electromagnetic compatibility is good. The vehicle in this embodiment is a hybrid vehicle.
Specifically, as shown in fig. 1, the two-motor inverter includes a case 1, a first power module 3 and a second power module 4, a dc bus capacitor 2, a first dc link seat 7 and a second dc link seat 8, a dc connector 16 and an ac connector 15, an electromagnetic filter 12, a first ac link seat 9 and a second ac link seat 10, a first driving board 5 and a second driving board 6. Wherein, a retaining wall structure is arranged on the box body 1; the first power module 3 and the second power module 4 are arranged on the box body 1 side by side; the direct current bus capacitor 2 is arranged on the box body 1, and the direct current bus capacitor 2 is positioned at the bottom end of the second power module 4; the first direct current wire holder 7 is arranged on the direct current side of the first power module 3 and used for connecting the direct current bus capacitor 2 with the first power module 3, and the second direct current wire holder 8 is arranged on the direct current side of the second power module 4 and used for connecting the direct current bus capacitor 2 with the second power module 4; the direct current connector 16 and the alternating current connector 15 are arranged on the periphery of the box body 1, the direct current connector 16 and the first power module 3 are respectively positioned on two sides of the retaining wall structure, and the direct current connector 16 and the alternating current connector 15 are both high-voltage connectors; the electromagnetic filter 12 is arranged on the box body 1, and the electromagnetic filter 12 is arranged at the high-voltage direct-current end of the double-motor inverter and is used for connecting the direct-current connector 16 with the first direct-current wire holder 7; the first ac wire holder 9 is disposed on the ac side of the first power module 3, for connecting the ac busbar of the driving motor with the first power module 3, so that the first ac wire holder 9 is directly connected with the ac busbar of the driving motor, and the second ac wire holder 10 is disposed on the ac side of the second power module 4, for connecting the ac connector 15 with the second power module 4; the first drive plate 5 is arranged on the first power module 3, the second drive plate 6 is arranged on the second power module 4, the first drive plate 5 and the second drive plate 6 are connected with the box body 1 through two grounding busbar, and a plurality of discharge resistors are integrally arranged on the first drive plate 5 and the second drive plate 6.
The first power module 3 and the second power module 4 are arranged on the box body 1 side by side, and the direct current bus capacitor 2 is positioned at the bottom end of the second power module 4, so that the whole direct current bus capacitor 2 is positioned in a concave area between the driving motor and the two motors of the generator, the space is greatly saved, and the arrangement is more convenient and compact; the plurality of discharging resistors are integrally arranged on the first driving plate 5 and the second driving plate 6, so that the number of parts is reduced, the assembly time is saved, and the structure is further compact; and set up the first interchange wire holder 9 in the exchange side of first power module 3, make the exchange busbar that first interchange wire holder 9 stretches out directly be connected with the exchange busbar of driving motor, no longer need additionally set up the high-voltage connector of exchanging, reduced manufacturing cost and saved whole car's arrangement space, further make the structure comparatively compact to make the integrated level of whole bi-motor dc-to-ac converter higher. In this embodiment, the first power module 3 and the second power module 4 are mounted on the case 1 side by side at 90 °. In other embodiments, the first power module 3 and the second power module 4 may be mounted on the case 1 side by side at 180 °.
Meanwhile, by arranging the electromagnetic filter 12 on the box body 1 and dividing the first power module 3 and the direct current connector 16 into two areas through a retaining wall structure on the box body 1, electromagnetic interference of the first power module 3 to the direct current connector 16 by passing through the electromagnetic filter 12 can be avoided, and therefore electromagnetic compatibility of the double-motor inverter is improved; and make first drive plate 5 and second drive plate 6 all be connected with box 1 through two ground connection female rows, can make first drive plate 5 and second drive plate 6 carry out abundant ground connection, further make the electromagnetic compatibility of bi-motor dc-to-ac converter better. As shown in fig. 1, the two grounding busbar are a first grounding busbar 13 and a second grounding busbar 14, respectively, and the first grounding busbar 13 and the second grounding busbar 14 are both disposed on the box 1.
Further, as shown in fig. 1 and 2, the two-motor inverter further includes an upper cover 19, a control board 20, and a top cover 21. Wherein, the upper cover 19 is arranged at the top end of the box body 1; the control board 20 is arranged at the top end of the upper cover 19, the control board 20 is electrically connected with the first driving board 5 and the second driving board 6, and the control board 20 is connected with the first driving board 5 through a board-to-board connector; the top cover 21 is provided on top of the upper cover 19 and the control board 20 for protecting the entire two-motor inverter. Wherein, control panel 20 is fixed on the top of upper cover 19 directly, can make the assembly of control panel 20 comparatively stable, and makes control panel 20 direct fixation on the die-casting casing to can improve the anti-vibration performance of bi-motor dc-to-ac converter, thereby can make whole bi-motor dc-to-ac converter adapt to the stronger characteristics of hybrid vehicle vibration level better, make its operational reliability higher.
The control board 20 is directly connected with the first driving board 5 through the board-to-board connector, so that no additional connecting flat cable is needed, the Y capacitor and the direct current bus capacitor are directly integrated, the structure is further compact, the production cost and the installation space are saved, and the integration level of the whole double-motor inverter is higher; and the control board 20 is positioned at the top end of the upper cover 19, so that the control board 20 and other high-voltage components in the double-motor inverter are respectively placed in the upper accommodating cavity and the lower accommodating cavity, and electromagnetic interference of the high-voltage components to the control board 20 is reduced, so that the electromagnetic compatibility of the whole double-motor inverter is better. The control board 20 is a common control structure of the inverter in the prior art, and therefore, specific structures and working principles thereof will not be described in detail herein. In this embodiment, the board-to-board connector adopts the vibration-resistant connector with better vibration resistance, so as to further improve the vibration resistance of the dual-motor inverter.
Specifically, as shown in fig. 2, the dual-motor inverter further includes a low-voltage connector 27, where the low-voltage connector 27 is disposed on the upper cover 19, so that the low-voltage connector 27 can be located in a cavity between the upper cover 19 and the top cover 21, so as to avoid electromagnetic interference from other high-voltage components in the dual-motor inverter, thereby enabling better electromagnetic compatibility of the entire dual-motor inverter.
Further, the first direct current wire holder 7 and the second direct current wire holder 8 are respectively arranged on the direct current side of the first power module 3 and the direct current side of the second power module 4 through an insert injection molding process; the first alternating current wire holder 9 and the second alternating current wire holder 10 are respectively arranged on the alternating current side of the first power module 3 and the alternating current side of the second power module 4 through an insert injection molding process; and first direct current wire holder 7, second direct current wire holder 8, first interchange wire holder 9 and second exchange wire holder 10 all are equipped with location structure to can make first direct current wire holder 7, second direct current wire holder 8, first interchange wire holder 9 and second exchange wire holder 10 in order to assemble, make its assemblability better, can save the assembly space simultaneously, so that the compactedness of whole structure is better. In other embodiments, the first dc link seat 7, the second dc link seat 8, the first ac link seat 9 and the second ac link seat 10 may be assembled by a split type pre-assembled fixing manner or other fixing manners.
The first dc connection base 7 has a stacked busbar structure. The laminated busbar structure is a laminated structure in which positive electrode busbar and negative electrode busbar in the first direct current wire holder 7 are alternately laminated to form at least three layers, so that parasitic inductance can be effectively reduced, performance of the double-motor inverter is improved, damage to core components of the double-motor inverter is avoided, and the double-motor inverter can be well protected.
Further, a cooling water channel connected in series is arranged at the bottom of the box body 1 and used for cooling the first power module 3 and the second power module 4, so that the heat dissipation capacity of the first power module 3 and the second power module 4 can be ensured; meanwhile, the structure of the whole double-motor inverter is simpler, and the whole layout is facilitated. In other embodiments, other forms of cooling may be employed.
Specifically, as shown in fig. 3 to 5, a water inlet pipe 17 and a water outlet pipe 18 are respectively provided on opposite sides of the tank 1; and the cooling water channel comprises a first power module water channel 22 for cooling the first power module 3 and a second power module water channel 23 for cooling the second power module 4. Wherein, a heat-conducting glue is coated between the second power module water channel 23 and the heat-radiating aluminum plate of the direct current bus capacitor 2 for cooling the direct current bus capacitor 2; the second power module water channel 23 is used for directly radiating the direct current bus capacitor 2, so that a cooling device for cooling and radiating the direct current bus capacitor 2 is additionally arranged on the box body 1, the number of parts is reduced under the condition that the direct current bus capacitor 2 is safely used, the production cost and the installation space are greatly saved, the structure is further compact, and the integration level of the whole double-motor inverter is higher.
Further, as shown in fig. 3-5, the cooling water channel further includes a main tank water channel 24, the main tank water channel 24 is used for connecting the first power module water channel 22 and the second power module water channel 23 in series, the main tank water channel 24 includes two cylindrical water channels 241 and one semi-cylindrical water channel 242, and the cylindrical water channel 241 and the semi-cylindrical water channel 242 are formed by die casting, so that the structure of the whole main tank water channel 24 is simpler; and the main tank water channel 24, the first power module water channel 22 and the second power module water channel 23 are all sealed by O-shaped sealing rings, and the back surface of the semi-cylindrical water channel 242 is sealed by the water channel sealing cover 25 and the water channel sealing ring 26, so that the leakage of cooling medium can be avoided to influence the whole cooling effect. In other embodiments, the main tank waterway 24 between the first power module 3 and the second power module 4 may also be sealed by friction stir welding or other sealing means.
When cooling, the cooling liquid enters from the water inlet pipe 17, firstly passes through the main box water channel 24 for switching, then enters the first power module water channel 22, then passes through the main box water channel 24 for switching, enters the second power module water channel 23 water channel, and finally flows out from the water outlet pipe 18 to finish cooling the first power module 3 and the second power module 4.
Specifically, as shown in fig. 1, the two-motor inverter further includes a current sensor 11, the ac side of the first power module 3 and the ac side of the second power module 4 are both provided with the current sensor 11, and the control board 20 is electrically connected with the current sensor 11 so as to be able to transmit a current signal detected by the current sensor 11 to the control board 20. In this embodiment, the current sensor 11 is a triple-type sensor, and the safety of the triple-type sensor is high.
Further, the dual-motor inverter further comprises a plurality of wire harness fixing seats (not shown in the figure) for fixing the wire harnesses in the dual-motor inverter; the wire harness is bound and fixed by using the wire harness fixing seat at the specific position of each wire harness routing, so that the wire harness can be prevented from being scratched to protect the wire harness, and the safety of the whole double-motor inverter is higher; and the wire harness is additionally fixed at a proper position through the wire harness fixing seat, so that the vibration resistance of the double-motor inverter can be further improved.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (8)
1. A dual motor inverter, comprising:
the box body (1) is provided with a retaining wall structure;
the first power module (3) and the second power module (4) are arranged on the box body (1) side by side;
the direct current bus capacitor (2) is arranged on the box body (1), and the direct current bus capacitor (2) is positioned at the bottom end of the second power module (4);
the direct-current power supply device comprises a first direct-current wire holder (7) and a second direct-current wire holder (8), wherein the first direct-current wire holder (7) is arranged on the direct-current side of the first power module (3) and used for connecting the direct-current bus capacitor (2) with the first power module (3), and the second direct-current wire holder (8) is arranged on the direct-current side of the second power module (4) and used for connecting the direct-current bus capacitor (2) with the second power module (4);
the direct current connector (16) and the alternating current connector (15) are arranged on the periphery of the box body (1), and the direct current connector (16) and the first power module (3) are respectively positioned on two sides of the retaining wall structure;
an electromagnetic filter (12) mounted on the case (1), the electromagnetic filter (12) being configured to connect the dc connector (16) and the first dc connector (7);
the first alternating current wire holder (9) and the second alternating current wire holder (10), the first alternating current wire holder (9) is arranged on the alternating current side of the first power module (3) and used for connecting an alternating current busbar of a driving motor of an automobile with the first power module (3) so that the first alternating current wire holder (9) is connected with the alternating current busbar of the driving motor, and the second alternating current wire holder (10) is arranged on the alternating current side of the second power module (4) and used for connecting the alternating current connector (15) with the second power module (4);
the first driving plate (5) and the second driving plate (6), the first driving plate (5) is arranged on the first power module (3), the second driving plate (6) is arranged on the second power module (4), the first driving plate (5) and the second driving plate (6) are connected with the box body (1) through two grounding busbar, and a plurality of discharge resistors are arranged on the first driving plate (5) and the second driving plate (6);
the bottom of the box body (1) is provided with a cooling water channel connected in series, so as to be used for cooling the first power module (3) and the second power module (4);
the cooling water channel comprises:
-a first power module water channel (22) for cooling the first power module (3);
the second power module water channel (23) is used for cooling the second power module (4), and heat conducting glue is coated between the second power module water channel (23) and a heat radiating aluminum plate of the direct current bus capacitor (2) so as to be used for cooling the direct current bus capacitor (2);
the main box water channel (24) is used for connecting the first power module water channel (22) and the second power module water channel (23) in series, the main box water channel (24) comprises two cylindrical water channels (241) and a semi-cylindrical water channel (242), the cylindrical water channel (241) and the semi-cylindrical water channel (242) are formed through die casting, and the main box water channel (24) is sealed with the first power module water channel (22) and the second power module water channel (23) through O-shaped sealing rings, and the back surface of the semi-cylindrical water channel (242) is sealed through a water channel sealing cover (25) and a water channel sealing ring (26).
2. The dual motor inverter of claim 1, further comprising:
an upper cover (19) provided at the top end of the case (1);
the control panel (20) is arranged at the top end of the upper cover (19), the control panel (20) is electrically connected with the first driving plate (5) and the second driving plate (6), and the control panel (20) is connected with the first driving plate (5) through a board-to-board connector.
3. The dual-motor inverter according to claim 1, wherein the first dc connection holder (7) and the second dc connection holder (8) are respectively disposed on the dc side of the first power module (3) and the dc side of the second power module (4) by an insert molding process.
4. The two-motor inverter according to claim 1, characterized in that the structure of the first dc link seat (7) is a laminated busbar structure.
5. The two-motor inverter according to claim 1, characterized in that the first ac connection block (9) and the second ac connection block (10) are respectively arranged on the ac side of the first power module (3) and the ac side of the second power module (4) by means of an insert injection molding process.
6. The dual motor inverter of claim 2, further comprising:
the current sensor (11) is arranged on the alternating current side of the first power module (3) and the alternating current side of the second power module (4), and the control board (20) is electrically connected with the current sensor (11).
7. The dual motor inverter of claim 1, further comprising:
the wire harness fixing seat is used for fixing the wire harness in the double-motor inverter.
8. An automobile comprising a drive motor, a generator, and the two-motor inverter according to any one of claims 1 to 7, the two-motor inverter being disposed between the drive motor and the generator.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110097508.8A CN112953348B (en) | 2021-01-25 | 2021-01-25 | Dual-motor inverter and automobile |
| PCT/CN2021/142859 WO2022156502A1 (en) | 2021-01-25 | 2021-12-30 | Dual-motor inverter and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110097508.8A CN112953348B (en) | 2021-01-25 | 2021-01-25 | Dual-motor inverter and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112953348A CN112953348A (en) | 2021-06-11 |
| CN112953348B true CN112953348B (en) | 2023-06-02 |
Family
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| CN112953348B (en) * | 2021-01-25 | 2023-06-02 | 中国第一汽车股份有限公司 | Dual-motor inverter and automobile |
| CN113858930A (en) * | 2021-10-28 | 2021-12-31 | 中国第一汽车股份有限公司 | Coaxial double-motor drive assembly and vehicle |
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- 2021-01-25 CN CN202110097508.8A patent/CN112953348B/en active Active
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| CN112953348A (en) | 2021-06-11 |
| WO2022156502A1 (en) | 2022-07-28 |
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