CN115411889A

CN115411889A - High-power density motor driver busbar of electric motor car

Info

Publication number: CN115411889A
Application number: CN202211133472.5A
Authority: CN
Inventors: 杜文彬; 王娅; 张文韬; 邹波
Original assignee: Guiyang Aviation Electrical Machinery Co Ltd
Current assignee: Guiyang Aviation Electrical Machinery Co Ltd
Priority date: 2022-09-18
Filing date: 2022-09-18
Publication date: 2022-11-29

Abstract

The invention provides a bus bar of a high-power density motor driver of an electric vehicle, which comprises a shell, wherein a support capacitor is arranged on one side in the shell, a power input port and a motor electrical interface are arranged on the shell, a partition plate is fixedly arranged in the middle of the inner side of the shell, a support rod is arranged on the upper surface of the partition plate, the partition plate is connected with a control panel component through the support rod, a current sensor component is arranged on the other side in the shell, a drive plate component and an insulated gate bipolar transistor are arranged between the partition plate and the control panel component, an organic box component is arranged on the inner side of the shell, a power input end is arranged at one end of the support capacitor, and an IGBT wiring end is arranged on the side surface of the support capacitor; according to the invention, the bus bar is integrated and designed in the support capacitor, and the IGBT wiring terminal extending out of the support capacitor can be directly connected to the IGBT, so that the space for wiring and layout of the internal bus bar is greatly reduced in the whole structure design, and the problem of short circuit of a plurality of internal bus bars is greatly reduced.

Description

High-power density motor driver busbar of electric motor car

Technical Field

The invention belongs to the field of busbars, and particularly relates to a busbar of a high-power density motor driver of an electric vehicle.

Background

With the development of electric automobile technology, the functions of the whole automobile are more and more complex, the arrangement of the whole automobile is compact, and compared with the traditional fuel oil automobile, the hybrid power and plug-in hybrid power need to be provided with two sets of power systems, which puts new requirements on the power density of a motor driver system. The light weight and high efficiency of the core component of the power system of the electric automobile present new challenges. The bus is used as a main board and is a relay station for collecting all data and transmitting it. Generally, the system installs various interface cards through the bus and transmits various data to the equipment connected with the interface cards.

After the conventional bus bar adopts copper plate processing, as electrical connection power electricity, in the super large power use occasion, often can use thicker copper plate to process and be used for reducing the extra loss that leads to in the heavy current uses, and wide and massive bus bar often makes structural need consider that creepage clearance satisfies the requirement. The wiring layout of the bus bars is staggered and complicated, so that the volume required by the overall structural design is increased, and meanwhile, the space required by well insulating the whole machine is larger.

In summary, the present invention provides a bus bar of a high power density motor driver for an electric vehicle to solve the above problems.

Disclosure of Invention

In order to solve the technical problems, the invention provides a bus bar of a high-power density motor driver of an electric vehicle, which aims to solve the problems that wiring layout of the bus bar in the prior art is staggered and complicated, so that the volume required by the overall structural design is increased, and the space required by insulation of the whole machine is larger.

The utility model provides a high-power density motor driver busbar of electric motor car, includes the casing, the inside one side of casing is provided with supports electric capacity, be provided with power input port and motor electrical interface on the casing, the inboard middle part fixed mounting of casing has the baffle, the upper surface of baffle is provided with the bracing piece, the baffle is connected with the control panel part through the bracing piece, the inside opposite side of casing is provided with the current sensor subassembly, be provided with drive plate part and insulated gate bipolar transistor between baffle and the control panel part, the casing inboard is provided with the case subassembly, the one end that supports electric capacity is provided with power input end, the side that supports electric capacity is provided with the IGBT wiring end.

As a technical scheme of the invention, the power input port and the power input end are correspondingly arranged.

As a technical scheme of the invention, the electric interface of the motor is connected with the current sensor assembly.

As a technical scheme of the invention, the shell is provided with screws, and the shell is detachably connected with the cover plate through the screws.

As a technical scheme of the invention, the lower surface of the cover plate is attached to the upper surface of the supporting capacitor.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the bus bar is integrated in the support capacitor, and the IGBT wiring terminal extending out of the support capacitor can be directly connected to the IGBT, so that the wiring and layout space of the internal bus bar is greatly reduced in the whole structure design, and the problem of short circuit of a plurality of internal bus bars is greatly reduced.

2. The invention reduces the distributed inductance parameters by shortening the distance from the support capacitor to the IGBT, thereby obtaining the optimized capacitor performance. In high-power application occasions, the extremely short bus bar design reduces extra unnecessary loss, and improves the efficiency of the whole machine.

Drawings

Fig. 1 is a schematic view of the internal assembly of the present invention.

Fig. 2 is an overall schematic of the invention.

Fig. 3 is an overall top schematic view of the present invention.

Fig. 4 is a schematic illustration of an inner portion of the present invention.

In the figure:

1. a housing; 2. a control panel component; 3. a flow sensor assembly; 4. a drive plate member; 5. an IGBT; 6. a motor electrical interface; 7. a support capacitor; 8. a power input port; 9. a screw; 10. a cover plate; 11. a partition plate; 12. a support bar; 13. a chassis component; 14. an IGBT terminal; 15. a power supply input terminal.

Detailed Description

Embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1-4, the present invention provides a bus bar of a high power density motor driver of an electric vehicle, which includes a housing 1, wherein a support capacitor 7 is disposed on one side inside the housing 1, a power input port 8 and a motor electrical interface 6 are disposed on the housing 1, a partition plate 11 is fixedly mounted in the middle of the inner side of the housing 1, a support rod 12 is disposed on the upper surface of the partition plate 11, the partition plate 11 is connected to a control panel component 2 through the support rod 12, a current sensor component 3 is disposed on the other side inside the housing 1, a drive panel component 4 and an IGBT5 are disposed between the partition plate 11 and the control panel component 2, an organic case component 13 is disposed on the inner side of the housing 1, a power input port 15 is disposed at one end of the support capacitor 7, and an IGBT terminal 14 is disposed on the side of the support capacitor 7.

As an embodiment of the present invention, the power input port 8 and the power input port 15 are provided correspondingly.

As an embodiment of the invention, the motor electrical interface 6 is connected to the current sensor assembly 3.

In one embodiment of the present invention, a screw 9 is disposed on the housing 1, and a cover plate 10 is detachably connected to the housing 1 through the screw 9 to protect devices inside the housing 1.

As an embodiment of the present invention, the lower surface of the cover plate 10 is attached to the upper surface of the supporting capacitor 7, so as to stabilize the supporting capacitor 7 and improve the overall stability.

The specific working principle is as follows:

the bus is integrally designed in the supporting capacitor 7, and an IGBT wiring terminal 14 extending out of the supporting capacitor 7 can be directly connected to the IGBT5, so that the space for routing and layout of the internal bus is greatly reduced in the integral structure design, and the problem of short circuit of a plurality of internal buses is greatly reduced; meanwhile, the structure shortens the distance from the supporting capacitor 7 to the IGBT5, plays a role in reducing distributed inductance parameters, obtains optimized capacitor performance, reduces extra unnecessary loss due to the extremely short bus bar design in a high-power application occasion, and improves the efficiency of the whole machine.

While embodiments of the present invention have been shown and described above for purposes of illustration and description, it will be understood that the above embodiments are illustrative and not restrictive of the current invention, and that changes, modifications, substitutions and alterations may be made in the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a high-power density motor driver busbar of electric motor car, includes casing (1), its characterized in that: the utility model discloses a motor control device, including casing (1), inside one side of casing (1) is provided with support electric capacity (7), be provided with power input port (8) and motor electrical interface (6) on casing (1), casing (1) inboard middle part fixed mounting has baffle (11), baffle (11) upper surface is provided with bracing piece (12), baffle (11) are connected with control panel part (2) through bracing piece (12), the inside opposite side of casing (1) is provided with current sensor subassembly (3), be provided with between baffle (11) and control panel part (2) drive plate part (4) and IGBT (5), casing (1) inboard is provided with case subassembly (13), the one end of support electric capacity (7) is provided with power input end (15), support electric capacity (7) side is provided with IGBT wiring end (14).

2. The high power density motor driver bus of claim 1 in an electric vehicle, wherein: the power input port (8) and the power input end (15) are correspondingly arranged.

3. The high power density motor driver bus of claim 1 in an electric vehicle, wherein: the motor electrical interface (6) is connected with the current sensor assembly (3).

4. The high power density motor driver bus of claim 1 in an electric vehicle, wherein: the novel multifunctional electric heating cooker is characterized in that a screw (9) is arranged on the shell (1), and the shell (1) is detachably connected with a cover plate (10) through the screw (9).

5. The high power density motor driver bus of claim 4, wherein: the lower surface of the cover plate (10) is attached to the upper surface of the supporting capacitor (7).