CN216905631U

CN216905631U - Integrated power electronic unit

Info

Publication number: CN216905631U
Application number: CN202220469837.0U
Authority: CN
Inventors: 黄锦元; 刘大伟; 黄光盛; 杨龙俊
Original assignee: Prestolite Electric Weifang Ltd
Current assignee: Prestolite Electric Weifang Ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-07-05
Anticipated expiration: 2032-03-01

Abstract

The utility model discloses an integrated power electronic unit, which belongs to the technical field of automobile control equipment and comprises a box body, an upper cover plate and a lower cover plate, wherein a cooling water channel assembly which divides the box body into an upper layer space and a lower layer space is arranged in the middle of the box body, and the cooling water channel assembly comprises a water channel bottom plate and a water channel cover plate which are detachably connected; install the MCU module in the upper space between water course bottom plate and the upper cover plate, PDU module and insulation monitor, install the DCAC module in the lower floor space between water course apron and the lower cover plate, the DCDC module, water course apron and box are discrete part, when the DCAC module of the different specifications of demand, during the DCDC module, only need to change the water course apron that matches with it, can guarantee the platformization and the standardization of product, can be with the DCAC module simultaneously, the DCDC module separates with the PDU module, avoid the high-voltage circuit of PDU module to the DCAC module, DCDC module and low voltage signal production interference, improve the electromagnetic compatibility of product.

Description

Integrated power electronic unit

Technical Field

The utility model belongs to the technical field of automobile control equipment, and particularly relates to an integrated power electronic unit.

Background

At present, an integrated electronic control unit (hereinafter referred to as a PEU) is a trend of development of new energy automobile driving industry, and the unit is composed of a plurality of functional modules, including modules such as an MCU (driving motor controller), a DC-DC (direct current converter), a DC-AC (inverter module), a PDU (power distribution module), and an IDU (insulation detection module), and can be selectively configured according to vehicle requirements.

In the existing design, the entire PEU is arranged in a tiled structure, that is, the box body is a single-layer structure, and the detailed structure is shown in the schematic diagram below, each module is arranged in the box body in a tiled manner, different modules are stacked up and down through internal supporting plates, and the detailed structure is shown in the schematic diagram below. The overall structure layout is as follows: the utility model discloses a cabinet, including PDU, DCDC module, DCAC module, MCU module, the design of insurance is on DCDC module, DCAC module, MCU module, and on fixed box was supported through the baffle to the relay and the insurance design of PDU part on the box was arranged to the tiled formula such as DCDC module, DCAC module, MCU module, the insurance design was fixed through insulating terminal on the baffle, and the pencil does not have fixed line route.

This structure has the following problems:

1. the water channel cover plate is arranged at the bottom of the box body, the DCDC module, the DCAC module, the MCU module and the like are flatly arranged on the box body, the function expansion and the compatibility are poor, if the modules in the box body need to be replaced, the product needs to be re-arranged and designed, and the platformization and standardization degree of the product is low;

2. the PDU module comprises a fuse and a relay, the PDU module is designed and fixed on the partition plate, the partition plate is supported and fixed through a support column on the box body, the relay is fixed through switching, and the anti-seismic performance of the relay is limited to a certain extent;

3. the PDU part is arranged above the DCDC module and the DCAC module through an internal supporting plate, and a high-voltage circuit formed by the PDU causes certain interference on low-voltage signals of the DCDC module and the DCAC module due to a gap between the two clapboards and a gap between the clapboards and the box body, so that the electromagnetic compatibility of a product is influenced;

4. the fuse direction in the PDU part is uncertain, the two ends of the fuse are connected by adopting a lead, and when the fuse is replaced, overhauled and installed, the lead has the risk of popping out or missing the wiring, the manufacturability is poor, and the hidden trouble of wrong wiring exists;

5. the fixed position design of pencil line is on the baffle, does not fix pencil ligature point and walk the line direction, causes the pencil confusion easily, influences the aesthetic feeling.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the integrated power electronic unit is convenient to replace DCAC modules and DCDC modules with different specifications, ensures the platformization and standardization of products, and can effectively reduce the interference between electricity and improve the electromagnetic compatibility.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

an integrated power electronic unit comprises a box body, an upper cover plate and a lower cover plate, wherein a cooling water channel assembly which divides the box body into an upper layer space and a lower layer space is arranged in the middle of the box body, and the cooling water channel assembly comprises a water channel bottom plate and a water channel cover plate which are detachably connected; the water channel bottom plate with install MCU module, PDU module and insulation monitor in the upper space between the upper cover plate, the water channel apron with install DCAC module, DCDC module in the lower floor space between the lower cover plate.

Further, the water channel bottom plate and the box body are of an integral structure, the PDU module comprises a relay module, and the relay module is fixed on the upper side face of the water channel bottom plate.

Further, the MCU module is fixed in the side of going up of water course bottom plate, the insulation monitor install in on the MCU module, the DCAC module with the DCDC module is fixed in the downside of water course apron.

Further, the PDU module further comprises a fuse box assembly, and the fuse box assembly comprises a plurality of fuses, copper bars and lead wires which are arranged in the fuse box.

Further, the MCU module, the relay control panel and the insulation monitor with the PDU module are respectively located on two sides in the box body.

Furthermore, slotted holes are formed in the corners of the two sides of the water channel bottom plate respectively, and the high-voltage wiring harness and the low-voltage wiring harness penetrate through the slotted holes in different positions respectively.

Furthermore, a junction box is installed on the outer side of the front end of the box body, a three-phase junction block assembly and a direct-current junction block assembly are arranged in the junction box, and the three-phase junction block assembly and the direct-current junction block assembly respectively comprise a magnetic ring and an input copper bar.

Furthermore, a locker for fixing the wiring harness is arranged at the bottom of the junction box, an opening is formed in the side face of the front end of the junction box, and a junction box cover plate is fixed at the opening.

Furthermore, a plurality of wire clamps used for fixing wire harnesses are respectively arranged on the partition board in the MCU module, the water channel bottom board and the water channel cover board.

After the technical scheme is adopted, the utility model has the beneficial effects that:

the integrated power electronic unit comprises a box body, an upper cover plate and a lower cover plate, wherein a cooling water channel assembly which divides the box body into an upper layer space and a lower layer space is arranged in the middle of the box body, and the cooling water channel assembly comprises a water channel bottom plate and a water channel cover plate which are detachably connected; install the MCU module in the upper space between water course bottom plate and the upper cover plate, PDU module and insulation monitor, install the DCAC module in the lower floor space between water course apron and the lower cover plate, the DCDC module, water course apron and box are discrete part, when the DCAC module of the different specifications of demand, during the DCDC module, only need to change the water course apron that matches with it, can guarantee the platformization and the standardization of product, can be with the DCAC module simultaneously, the DCDC module separates with the PDU module, avoid the high voltage circuit of PDU module to the DCAC module, DCDC module and low voltage signal production interference, improve the electromagnetic compatibility of product.

Drawings

FIG. 1 is a cross-sectional view of an integrated power electronic unit of the present invention;

FIG. 2 is a schematic view of the structure above the water channel bottom plate of the integrated power electronic unit of the present invention;

FIG. 3 is a schematic diagram of the structure in the upper space of the integrated power electronic unit of the present invention;

FIG. 4 is a schematic diagram of the structure of the lower space of the integrated power electronic unit of the present invention;

FIG. 5 is a schematic diagram of the external structure of the integrated power electronic unit of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a schematic view of the internal structure of the junction box;

FIG. 8 is a schematic structural view of a safe assembly;

FIG. 9 is a schematic diagram of an exploded view of an integrated power electronic unit of the present invention;

in the figure, 10-box, 11-mounting foot, 12-upper cover plate, 13-lower cover plate, 14-water channel bottom plate, 15-water channel cover plate, 16-water nozzle, 17-slotted hole, 18-wire clamp, 20-IGBT component, 21-main control board, 22-thin film capacitor, 23-input positive copper bar, 24-input negative copper bar, 25-U/V/W three-phase copper bar, 26-main control board clapboard, 30-insulation monitor, 31-Y capacitor board component, 40-relay control board, 41-relay control board clapboard, 50-pre-charging relay, 51-auxiliary driving relay, 52-input positive relay, 53-input negative relay, 54-pre-charging resistor, 60-fuse box component, 61-fuse box, 62-fuse, 63-connecting copper bar, 64-lead, 65-fuse box cover plate, 66-power distribution plug-in, 70-junction box, 71-three-phase junction block assembly, 72-direct current junction block assembly, 73-magnetic ring, 74-input copper bar, 75-locker, 76-junction box cover plate, 80-DCAC module and 81-DCDC module.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

All directions referred to in the present specification are based on the drawings, and represent relative positional relationships only, and do not represent absolute positional relationships.

As shown in fig. 1, 2, 3, 5 and 9, an integrated power electronic unit includes a box body 10, an upper cover plate 12 and a lower cover plate 13, a plurality of installation legs 11 are installed on a side surface of the box body 10, a cooling water channel assembly for dividing the box body 10 into an upper space and a lower space is arranged in the middle of the box body 10, the cooling water channel assembly includes a water channel bottom plate 14 and a water channel cover plate 15 which are detachably connected, a plurality of water channels are opened on a lower side surface of the water channel bottom plate 14, the water channel cover plate 15 forms a cooling water channel fixedly on the lower side surface of the water channel bottom plate 14, and a water nozzle 16 communicated with the cooling water channel is installed on a side surface of the box body 10. An MCU module, a PDU module and an insulation monitor 30 are installed in an upper layer space between the water channel bottom plate 14 and the upper cover plate 12, and a DCAC module 80 and a DCDC module 81 are installed in a lower layer space between the water channel cover plate 15 and the lower cover plate 13.

As shown in fig. 2 and 9, the waterway bottom plate 14 is integrally formed with the housing 10, and the PDU module includes a relay module installed on an upper side surface of the waterway bottom plate 14. The relay module comprises 2 pre-charging relays 50, 3 auxiliary driving relays 51, an input positive relay 52, an input negative relay 53 and 2 pre-charging resistors 54, and the pre-charging group and the relays are designed on the box body 10 without intermediate transitional connection, so that the anti-seismic performance of the product can be effectively improved.

As shown in fig. 2, 3, 6 and 9, the MCU module is fixed to the upper side of the waterway bottom plate 14, the insulation monitor 30 is mounted on the MCU module, and the DCAC module 80 and the DCDC module 81 are fixed to the lower side of the waterway cover plate 15. Wherein, the MCU module includes IGBT subassembly 20, main control panel 21, film capacitor 22, the positive copper bar 23 of input and input negative copper bar 24, the three-phase copper bar 25 of U/V W that connect input positive relay 52 and input negative relay 53, main control panel 21 designs in IGBT subassembly 20 top, and the centre is fixed by main control panel baffle 26, and relay control panel 40 is in main control panel 21 top, and is fixed through relay control panel baffle 41. Insulation monitor 30 and Y capacitor plate assembly 31 are secured to main control panel spacer 26.

As shown in fig. 3, 8 and 9, the PDU module further includes a fuse block assembly 60 located above the relay module, and the fuse block assembly 60 includes a plurality of fuses 62 installed in a fuse block 61, a connecting copper bar 63 and a lead 64 located above the auxiliary drive relay 51. A plurality of connection copper bars 63 are connected respectively between each relay and insurance 62, between insurance 62 and lead wire 64, and insurance 62 can avoid lead wire 64 to have the risk of popping out or leaking the wiring when changing to overhaul and installing, and the other end and the back electrode load of lead wire 64 are connected. The fuse block assembly 60 further includes a fuse block 61 cover plate that is located at the same horizontal position as the upper cover plate 12. The sides of the enclosure 10 are also provided with power distribution inserts 66.

As shown in fig. 2 and 4, the MCU module, the relay control board 40, the insulation monitor 30 and the PDU module are respectively located at two sides of the box 10. Slotted holes 17 are respectively formed in the corners of two sides of the water channel bottom plate 14, high-voltage wiring harnesses and low-voltage wiring harnesses respectively penetrate through the slotted holes 17 in different positions and are connected with an upper part component, the left slotted hole 17 in the figure is used for the low-voltage wiring harnesses to penetrate through, and the right 2 slotted holes 17 are used for the high-voltage wiring harnesses to penetrate through. The low-voltage signal wire harness of DCAC module 80, DCDC module 81, MCU module separates with the high-voltage wire harness of PDU module, can effectively reduce the interference between electricity, improves the electromagnetic compatibility performance.

As shown in fig. 5, 7 and 9, a junction box 70 is mounted on the outer side of the front end of the box 10, a three-phase junction block assembly 71 and a dc junction block assembly 72 are disposed in the junction box 70, and both the three-phase junction block assembly 71 and the dc junction block assembly 72 include a magnetic ring 73 and an input copper bar 74. The bottom of the junction box 70 is provided with a locker 75 for fixing wiring harnesses, each wiring harness extends from the bottom of the junction box 70, penetrates through the magnetic ring 73 and then is connected with the corresponding input copper bar 74, and the wiring harnesses are fixed on the junction box 70 through the locker 75 at the bottom of the junction box 70. The side of the front end of the junction box 70 is open, so that the wiring harness can be conveniently installed, and a junction box cover plate 71 is fixed at the opening. The magnetic ring 73 is embedded and sealed after being installed in the junction block, the distance L between the embedding surface and the outer plane of the junction block is larger than or equal to 0.5mm, and therefore the magnetic ring 73 is guaranteed to be isolated from the outside, and the magnetic ring 73 is prevented from being damaged by external force.

As shown in fig. 2 and 4, the partition board, the water channel bottom board 14 and the water channel cover board 15 in the MCU module are respectively provided with a plurality of wire clamps 18 for fixing wire harnesses, so that binding points and routing directions of the wire harnesses can be fixed, and the MCU module has a high manufacturability and a good aesthetic feeling.

According to the integrated power electronic unit, the cooling water channel assembly which divides the box body into an upper layer space and a lower layer space is arranged in the middle of the box body, the MCU module, the PDU module and the insulation monitor are installed in the upper layer space between the water channel bottom plate and the upper cover plate, the DCAC module and the DCDC module are installed in the lower layer space between the water channel cover plate and the lower cover plate, the water channel cover plate and the box body are discrete components, the DCAC module and the DCDC module with different specifications can be replaced according to needs, the platformization and standardization of products are guaranteed, meanwhile, the electric interference can be effectively reduced, and the electromagnetic compatibility is improved.

While specific embodiments of the utility model have been described above, it will be understood by those skilled in the art that the described embodiments are only some, and not all, of the present invention, which is presented by way of example only, and the scope of the utility model is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of the utility model, and these changes and modifications all fall within the scope of the utility model.

Claims

1. An integrated power electronic unit comprises a box body, an upper cover plate and a lower cover plate, and is characterized in that a cooling water channel assembly which divides the box body into an upper layer space and a lower layer space is arranged in the middle of the box body, and the cooling water channel assembly comprises a water channel bottom plate and a water channel cover plate which are detachably connected;

the water channel bottom plate with install MCU module, PDU module and insulation monitor in the upper space between the upper cover plate, the water channel apron with install DCAC module, DCDC module in the lower floor space between the lower cover plate.

2. The integrated power electronic unit of claim 1, wherein the waterway bottom plate is integrally formed with the case, and the PDU module includes a relay module fixed to an upper side surface of the waterway bottom plate.

3. The integrated power electronic unit of claim 2, wherein the MCU module is fixed to an upper side of the waterway cover plate, the insulation monitor is mounted on the MCU module, and the DCAC module and the DCDC module are fixed to a lower side of the waterway cover plate.

4. The integrated power electronic unit of claim 3, wherein the PDU module further comprises a fuse block assembly comprising a number of fuses, copper bars and leads mounted in a fuse block.

5. The integrated power electronic unit of claim 3, wherein the MCU module, relay control board and the insulation monitor and PDU module are located on two sides of the box respectively.

6. The integrated power electronic unit according to claim 5, wherein the corners of the two sides of the water channel bottom plate are respectively provided with a slotted hole, and the high-voltage wiring harness and the low-voltage wiring harness respectively pass through the slotted holes at different positions.

7. The integrated power electronic unit as claimed in claim 6, wherein a junction box is mounted on the outside of the front end of the case, a three-phase junction block assembly and a dc junction block assembly are provided in the junction box, and the three-phase junction block assembly and the dc junction block assembly each comprise a magnetic ring and an input copper bar.

8. The integrated power electronic unit as claimed in claim 7, wherein the bottom of the junction box is provided with a locker for fixing a wiring harness, and the side surface of the front end of the junction box is provided with an opening, and a junction box cover plate is fixed at the opening.

9. The integrated power electronic unit according to any one of claims 1 to 8, wherein the partition plate, the water channel bottom plate and the water channel cover plate in the MCU module are respectively provided with a plurality of wire clamps for fixing a wire harness.