Dual-drive equipment for new energy automobile

Abstract

The invention relates to dual-drive equipment for a new energy automobile, which comprises a mounting shell, a first inversion device, a second inversion device, a first integrated circuit board, a second integrated circuit board, an energy consumption compensation device and a choke shielding device, and is characterized in that a partition plate for dividing the inner space of the mounting shell into a first inversion cavity and a second inversion cavity is arranged in the mounting shell; a hollow rectangular window is formed in the partition plate, the energy consumption compensation device is arranged in the rectangular window, the two sides of the energy consumption compensation device are located in the two inversion cavities respectively, the two inversion devices and the two integrated circuit boards are located in the two inversion cavities respectively, the choke shielding device is located in one inversion cavity, and the choke shielding device is located in the other inversion cavity. The choke shielding device is respectively connected with the first integrated circuit board and the second integrated circuit board through the energy consumption compensation device, the first integrated circuit board is connected with the first inversion device, and the second integrated circuit board is connected with the second inversion device. Compared with the prior art, the method has the advantages of improving the space utilization rate and the like.

Description

Technical Field

[0001] The present invention relates to the field of electric driving, and in particular to a dual-driving device for new energy vehicles. Background Art

[0002] With the rapid development of new energy vehicle technology, the market share of electric vehicles has also increased year by year. It is not difficult to find that in addition to the traditional single-motor electric drive solution, the dual-motor powertrain solution is also widely recognized by the market, especially in high-performance models. The dual-motor four-wheel drive solution has become the entry-level configuration of high-end models.

[0003] The dual-motor solution is matched with a dual-motor controller. In the early solutions, two independent drive motor controllers are usually set up in the vehicle to realize the drive and control of the dual motors. With the iteration and update of technology, a variety of two-in-one dual-motor controllers have gradually appeared in the market. The power devices and drive control units of the two controllers are integrated in one controller box, which realizes the drive and control functions of the two motors by one controller from a physical level. However, the existing integration solutions of dual-motor controllers are basically evolved from the traditional single-motor structural solution. By setting up a larger box, the number of IGBTs, thin-film capacitors, filters and drive control circuit boards of the traditional single-motor controller is doubled, and fixed in the box, and the power devices are electrically connected through Busbar busbars or wiring harnesses. Judging from the appearance of the controller assembly alone, this structural layout scheme has a high-voltage bus input and two sets of three-phase AC outputs, which does realize the integration of dual electric controls. However, its essence is still the physical stacking of two traditional single-motor controllers. There are still two single-motor controllers inside, but they share a housing, and there are still gaps between the components of the two sets of electric controls. Although it can reduce the number of controller assemblies in the whole vehicle and reduce the difficulty of vehicle assembly, it does not promote the technical advancement of the dual-motor controller integration solution, and it results in a single dual-electric control assembly that is bulky and heavy, which is not conducive to the miniaturization and space design of the host vehicle. Summary of the invention

[0004] The purpose of the present invention is to provide a dual-drive device for new energy vehicles, which adopts an upper and lower layer of inverter cavity, places an energy consumption compensation device through a through rectangular window, and connects the integrated circuit board and the inverter device on both sides based on the energy consumption compensation device. Such a design can realize the inverter device and the integrated circuit board in the two layers of inverter cavity, with strong adaptability, thereby realizing a simple controller structure, while avoiding the large size of the prior art tiling solution.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A dual-drive device for a new energy vehicle comprises a mounting shell, a first inverter device and a second inverter device. The device further comprises a first integrated circuit board, a second integrated circuit board, an energy consumption compensation device and a choke shielding device. The mounting shell has two oppositely arranged side openings, and a first cover plate and a second cover plate are respectively provided at the openings. A partition is provided in the mounting shell to divide the space in the mounting shell into a first inverter cavity and a second inverter cavity, and a hollow rectangular window is provided on the partition. The energy consumption compensation device is provided in the rectangular window, and two sides of the energy consumption compensation device are respectively located in the first inverter cavity and the second inverter cavity. The first inverter device and the first integrated circuit board are both located in the first inverter cavity, and the second inverter device and the second integrated circuit board are both located in the second inverter cavity. The choke shielding device is located in one of the inverter cavities. The choke shielding device is respectively connected to the first integrated circuit board and the second integrated circuit board through the energy consumption compensation device, the first integrated circuit board is connected to the first inverter device, and the second integrated circuit board is connected to the second inverter device.

[0007] An upper water tank and a lower water tank are respectively arranged on both sides of the partition, the upper water tank is located on the side facing the first inverter chamber, and the lower water tank is located on the side facing the second inverter chamber. A through hole connecting the upper water tank and the lower water tank is also arranged on the partition.

[0008] The upper water tank includes a first water tank body and a first through-hole, and the lower water tank includes a second water tank body and a second through-hole. The projection areas of the first water tank body and the second water tank body on the partition do not overlap, and the through hole connects the first through-hole and the second through-hole.

[0009] The installation shell is also provided with a water inlet and a water outlet, one of which is communicated with the upper water tank, and the other is communicated with the lower water tank.

[0010] The water inlet and the water outlet are located on the same side of the mounting shell.

[0011] The projection area of ​​the upper water tank on the partition plate and the projection area of ​​the lower water tank on the partition plate are arranged in an axisymmetric manner.

[0012] The first integrated circuit board and the second integrated circuit board have the same structure, and the first integrated circuit board is provided with a pin-type Hall detector and a current-carrying terminal.

[0013] The choke shielding device comprises a bracket and a choke filter circuit board, and the choke filter circuit board is encapsulated in the bracket by epoxy potting.

[0014] The energy consumption compensation device comprises a main body potted capacitor and mounting feet arranged on both sides of the main body potted capacitor. The mounting feet are supported on the partition and connected to the partition through a connecting piece.

[0015] The installation shell is also provided with an electrical connection port.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The upper and lower layers of inverter cavities are used, and the energy consumption compensation device is placed through a through rectangular window. The integrated circuit board and the inverter device on both sides are connected based on the energy consumption compensation device. Such a design can realize the universal use of the inverter device and the integrated circuit board in the two layers of inverter cavities, with strong adaptability, thereby realizing a simple controller structure and avoiding the large size of the existing tiling solution.

[0018] 2. Through the design of the upper water tank, the lower water tank and the through hole, the projection area of ​​the upper water tank and the lower water tank on the partition is axially symmetrical, and the water inlet and the water outlet are located on the same side of the mounting shell, and the staggered arrangement of the water tanks can improve the flatness, thereby improving the space utilization rate, and by reducing the distance between the water tank and the inverter device, the heat dissipation performance is improved, effectively avoiding the problem of insufficient heat dissipation when the device is compact.

[0019] 3. The inverter device and integrated circuit board are used, which has high integration, few parts and easy assembly.

[0020] 4. By potting and installing the choke filter circuit board into the bracket, an integrated choke shielding device similar to a black box is formed, which has the characteristics of high integration, high electromagnetic compatibility, and easy assembly.

[0021] 5. The Hall detector is soldered on the integrated circuit board, thereby achieving a high degree of integration of the internal parts of the controller, reducing the number of internal parts of the controller, and reducing the difficulty of assembling the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the explosion structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the first inverter chamber of the mounting housing of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the second inverter chamber of the mounting housing of the present invention;

[0025] Figure 4 is a schematic structural diagram of a first integrated circuit board;

[0026] Figure 5 It is a schematic diagram of the structure of the choke shielding device;

[0027] Figure 6 It is a schematic diagram of the structure of the energy consumption compensation device;

[0028] Figure 7 is a structural schematic diagram of a first cover plate;

[0029] Wherein: 1. mounting shell, 3. second inverter device, 4. energy consumption compensation device, 5. choke shielding device, 6. first cover plate, 7. second cover plate, 8. first integrated circuit board, 9. second integrated circuit board, 101. rectangular window, 102. first inverter cavity, 103. second inverter cavity, 104. upper water tank, 105. lower water tank, 106. through hole, 107. water inlet, 108. water outlet, 401. mounting foot, 402. first compensation terminal, 403. second compensation terminal, 501. bracket, 502. choke filter circuit board, 521. input copper bus, 522. safety capacitor, 523. output copper bus, 524. filter capacitor, 525. inductor, 801. pin-type Hall detector, 802. current-carrying terminal. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the terms “proximal”, “distal” and “third” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] A dual drive device for new energy vehicles, such as Figures 1 to 3As shown, a mounting housing 1, a first inverter device and a second inverter device 3, the device further includes a first integrated circuit board 8, a second integrated circuit board 9, an energy consumption compensation device 4 and a choke shielding device 5, the mounting housing 1 is an overall three-dimensional square structure, two oppositely arranged side openings of the mounting housing 1, and a first cover plate 6 and a second cover plate 7 are respectively provided at the openings, a partition is provided in the mounting housing 1 to divide the space in the mounting housing 1 into a first inverter cavity 102 and a second inverter cavity 103, and a hollow rectangular window 101 is provided on the partition, and the energy consumption compensation device 4 is provided in the rectangular window 1 01, and the two sides of the energy loss compensation device 4 are respectively located in the first inverter cavity 102 and the second inverter cavity 103, the first inverter device and the first integrated circuit board 8 are both located in the first inverter cavity 102, the second inverter device 3 and the second integrated circuit board 9 are both located in the second inverter cavity 103, the choke shielding device 5 is located in one of the inverter cavities, the choke shielding device 5 is respectively connected to the first integrated circuit board 8 and the second integrated circuit board 9 through the energy loss compensation device 4, the first integrated circuit board 8 is connected to the first inverter device, and the second integrated circuit board 9 is connected to the second inverter device 3. In addition, an electrical connection port is also provided on the mounting housing 1, and the DC high-voltage network flows into the energy loss compensation device 4 through the choke shielding device 5, and then flows into the first inverter device and the second inverter device 3 through the first inverter device and the first integrated circuit board 8 of the first inverter cavity and the second inverter cavity, respectively, to achieve current inversion.

[0034] An upper and lower layer inverter cavity is adopted, and the energy consumption compensation device 4 is placed through a through rectangular window 101, and the integrated circuit board and the inverter device on both sides are connected based on the energy consumption compensation device 4. Such a design can realize the inverter device and the integrated circuit board to be universal in the two layers of the inverter cavity, with strong adaptability, thereby realizing a simple controller structure and avoiding the large size deficiency of the prior art tiling solution.

[0035] An upper water tank 104 and a lower water tank 105 are respectively disposed on both sides of the partition. The upper water tank 104 is located on the side facing the first inverter chamber 102, and the lower water tank 105 is located on the side facing the second inverter chamber 103. A through hole 106 connecting the upper water tank 104 and the lower water tank 105 is also disposed on the partition.

[0036] The upper water tank 104 includes a first water tank body and a first through-portion, and the lower water tank 105 includes a second water tank body and a second through-portion. The projection areas of the first water tank body and the second water tank body on the partition do not overlap, and the through hole 106 connects the first through-portion and the second through-portion.

[0037] The mounting shell 1 is also provided with a water inlet 107 and a water outlet 108, one of which is connected to the upper water tank 104, and the other is connected to the lower water tank 105. In this embodiment, the upper water tank 104 and the lower water tank 105 are formed into a sealed cooling chamber by stir friction welding cover plates. The water inlet 107 on the mounting shell 1 is connected to the upper water tank 104, and the water outlet 108 is connected to the outlet water tank 104.

[0038] In most embodiments, the water inlet 107 and the water outlet 108 are located on the same side of the mounting housing 1 .

[0039] The projection area of ​​the upper water tank 104 on the partition plate and the projection area of ​​the lower water tank 105 on the partition plate are arranged axially symmetrically.

[0040] Through the design of the upper water trough 104, the lower water trough 105 and the through hole 106, the projection areas of the upper water trough 104 and the lower water trough 105 on the partition are axially symmetrical, and the water inlet 107 and the water outlet 108 are located on the same side of the mounting shell 1, and the staggered arrangement of the water troughs can improve the flatness, thereby improving the space utilization, and by reducing the distance between the water trough and the inverter device, the heat dissipation performance is improved, effectively avoiding the problem of insufficient heat dissipation when the device is compact.

[0041] In general, in addition to being divided into upper and lower layers of the inverter cavity, the structures within the two inverter cavities are generally axially symmetrically distributed, so the upper and lower cavities can be compatible with the same inverter device and integrated circuit board.

[0042] The first integrated circuit board 8 and the second integrated circuit board 9 have the same structure. Figure 4 As shown, a pin-type Hall detector 801 and a current-carrying terminal 802 are provided on the first integrated circuit board 8. By using copper cladding on the PCBA to replace the busbar copper bar, the choke shielding device, the energy loss compensation device, and the inverter device are electrically connected, and the Hall detector is soldered on the integrated circuit board, thereby achieving a high degree of integration of the internal parts of the controller and reducing the number of internal parts of the controller. The first integrated circuit board 8 and the second integrated circuit board 9 are multi-layer printed circuit boards, which contain a large copper cladding layer inside, which serves as an energy transmission medium for the high-voltage network and replaces the transfer copper bar in the conventional controller. The pin-type Hall detector 801 and the current-carrying terminal 802 are integrated on the integrated circuit board, and a plurality of pinholes are provided around the Hall detector on the integrated circuit board for welding the pins of the inverter device.

[0043] like Figure 5As shown, the choke shielding device 5 includes a bracket 501 and a choke filter circuit board 502. The choke filter circuit board 502 is epoxy-encapsulated in the bracket 501. By encapsulating and installing the choke filter circuit board 502 in the bracket, an integrated choke shielding device similar to a black box is formed, which has the characteristics of high integration, high electromagnetic compatibility, and convenient assembly. The choke filter circuit board 502 includes a filter circuit board 524, an inductor 525, a safety capacitor 522, an input copper bar 521, and an output copper bar 523. The inductor 525, the safety capacitor 522, the input copper bar 521, and the output copper bar 523 are soldered on the filter circuit board 524. When working, the high-voltage DC current flows in from the input copper bar 521, flows through the filter circuit board 524, and flows out from the output copper bar 523.

[0044] like Figure 6 As shown, the energy loss compensation device 4 includes a main body potted capacitor, and mounting feet 401 arranged on both sides of the main body potted capacitor, and the mounting feet 401 are supported on the partition and connected to the partition through a connector. The energy loss compensation device 4 is a rectangular potted capacitor. The upper end face and the lower end face of the energy loss compensation device 4 are respectively provided with a first compensation terminal 402 and a second compensation terminal 403. The two mounting feet 401 located at the mid-waist position of the energy loss compensation device 4 are used to be fixed at the rectangular window position of the mounting shell, and the first compensation terminal 402 and the second compensation terminal 403 are respectively electrically connected to the integrated circuit board in the first inverter cavity 102 and the second inverter cavity 103.

[0045] In addition, the first cover plate 6 and the second cover plate 7 are used as sealing cover plates, and are both designed as square stamped sheet metal parts, and the surface is provided with a composite stamped rib plate of "O" shape and "M" shape, which is used to improve the strength and mode of the sealing cover plate. The first cover plate 6 and the second cover plate 7 are bilaterally symmetrical structures, and can be used as two at the same time, fixed on the first inverter cavity and the second inverter cavity, so as to achieve the sealing of the mounting housing 1.

[0046] The assembly process of this embodiment is as follows:

[0047] First, the inverter device and the energy consumption compensation device 4 are installed.

[0048] The upper water tank 104 and the lower water tank 105 in the installation shell are friction welded with the first cover plate 6 and the second cover plate 7 to achieve the sealing of the cooling water tank. Next, apply thermal conductive silicone grease to the bottom of the first inverter device and the second inverter device 3, and fix the first inverter device and the second inverter device 3 to the upper water tank 104 of the first inverter chamber 102 and the lower water tank 105 of the second inverter chamber 103 by bolts. Then put the energy consumption compensation device 4 into the rectangular window 101 position in the first inverter chamber 102, and fix it to the rectangular window 101 by the installation feet of the energy consumption compensation device 4.

[0049] Next, the choke shield device 5 is assembled.

[0050] like Figure 5 As shown, two inductors 525 are soldered on the choke filter circuit board 502, and then the safety capacitors 522 are respectively soldered and fixed according to the positions in the figure, and then the input copper bar 521 and the output copper bar 523 are soldered to the choke filter circuit board 502 to form a choke filter circuit board 502. Finally, the choke filter circuit board 502 is fixed to the bracket 501, and the choke filter circuit board 502 is potted and cured by epoxy.

[0051] Then, the choke shield device 5 and the integrated circuit board are mounted.

[0052] The choke shielding device 4 is fixed to the side of the upper water tank 104 of the first inverter chamber 102 of the mounting housing 1 by bolts. Then the first integrated circuit board 8 is covered to the first inverter device, the energy loss compensation device 4 and the choke shielding device 5 of the first inverter chamber 102, and the pins of the first inverter device are electrically connected to the first integrated circuit board 8 by soldering, the first compensation terminal 402 of the energy loss compensation device 4 is electrically connected to the first integrated circuit board 8 by bolts, and the output copper bus 523 of the choke shielding device 5 is electrically connected to the first integrated circuit board 8 by bolts.

[0053] Similarly, the second integrated circuit board 9 is installed in the second inverter cavity 103 of the mounting housing 1 , and is electrically connected to the second inverter device 3 and the second compensation terminal 403 of the energy consumption compensation device 4 in the second inverter cavity 103 .

[0054] Finally, the first cover plate 6 and the second cover plate 7 are installed.

[0055] The first cover plate 6 and the second cover plate 7 are respectively covered on the upper end surfaces of the first inverter chamber 102 and the second inverter chamber 103 of the mounting housing 1 and fixed by bolts to achieve sealing of the mounting housing 1 .

[0056] At this point, the overall assembly is completed. Later, water channels are connected at the water inlet 107 and the water outlet 108, and the DC bus is connected to the input copper bar 521 of the choke shielding device 5, and the current-carrying terminals on the integrated circuit boards of the first inverter cavity 102 and the second inverter cavity 103 are connected to the three-phase windings of the motor. The relevant preset functions can be realized.

Claims

1. A dual-drive device for a new energy vehicle, comprising a housing (1), a first inverter device and a second inverter device (3), characterized in that: The device further comprises a first integrated circuit board (8), a second integrated circuit board (9), an energy loss compensation device (4) and a choke shielding device (5); the installation housing (1) has two oppositely arranged side openings, and the openings are respectively provided with a first cover plate (6) and a second cover plate (7); the installation housing (1) is provided with a partition plate for dividing the space inside the installation housing (1) into a first inverter chamber (102) and a second inverter chamber (103); the partition plate is provided with a hollow rectangular window (101); the energy loss compensation device (4) is arranged in the rectangular window (101), and the two sides of the energy loss compensation device (4) are respectively provided with In a first inverter cavity (102) and a second inverter cavity (103), the first inverter device and the first integrated circuit board (8) are both located in the first inverter cavity (102), the second inverter device (3) and the second integrated circuit board (9) are both located in the second inverter cavity (103), the choke shielding device (5) is located in one of the inverter cavities, the choke shielding device (5) is respectively connected to the first integrated circuit board (8) and the second integrated circuit board (9) through an energy loss compensation device (4), the first integrated circuit board (8) is connected to the first inverter device, and the second integrated circuit board (9) is connected to the second inverter device (3).

2. A dual-drive device for new energy vehicles according to claim 1, characterized in that: An upper water tank (104) and a lower water tank (105) are respectively provided on both sides of the partition; the upper water tank (104) is located on the side facing the first inverter chamber (102), and the lower water tank (105) is located on the side facing the second inverter chamber (103); and a through hole (106) connecting the upper water tank (104) and the lower water tank (105) is also provided on the partition.

3. A dual-drive device for new energy vehicles according to claim 2, characterized in that: The upper water tank (104) includes a first water tank body and a first through-hole, and the lower water tank (105) includes a second water tank body and a second through-hole, the projection areas of the first water tank body and the second water tank body on the partition plate do not overlap, and the through hole (106) connects the first through-hole and the second through-hole.

4. A dual-drive device for new energy vehicles according to claim 2, characterized in that: The installation shell (1) is also provided with a water inlet (107) and a water outlet (108), one of which is in communication with the upper water tank (104) and the other of which is in communication with the lower water tank (105).

5. A dual-drive device for new energy vehicles according to claim 4, characterized in that: The water inlet (107) and the water outlet (108) are located on the same side of the mounting housing (1).

6. A dual-drive device for new energy vehicles according to claim 2, characterized in that: The projection area of ​​the upper water tank (104) on the partition plate and the projection area of ​​the lower water tank (105) on the partition plate are arranged in an axisymmetric manner.

7. A dual-drive device for new energy vehicles according to claim 1, characterized in that: The first integrated circuit board (8) and the second integrated circuit board (9) have the same structure, and the first integrated circuit board (8) is provided with a pin-type Hall detector and a current-carrying terminal.

8. The dual-drive device for new energy vehicles according to claim 1, characterized in that: The choke shielding device (5) comprises a bracket (501) and a choke filter circuit board (502); the choke filter circuit board (502) is sealed in the bracket (501) by epoxy potting.

9. The dual-drive device for new energy vehicles according to claim 1, characterized in that: The energy consumption compensation device (4) comprises a main body encapsulated capacitor and mounting feet (401) arranged on both sides of the main body encapsulated capacitor, wherein the mounting feet (401) are supported on a partition and connected to the partition via a connecting piece.

10. The dual-drive device for new energy vehicles according to claim 1, characterized in that: The installation housing (1) is also provided with an electrical connection port.

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