CN219760880U

CN219760880U - High-integration inversion assembly device

Info

Publication number: CN219760880U
Application number: CN202321063201.7U
Authority: CN
Inventors: 位超群; 陈登峰; 宋君峰
Original assignee: Shanghai Auto Edrive Co Ltd; Shanghai Auto Edrive Engineering Technology Research Center; Shanghai Edrive Co Ltd
Current assignee: Shanghai Auto Edrive Co Ltd; Shanghai Auto Edrive Engineering Technology Research Center; Shanghai Edrive Co Ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-09-26
Anticipated expiration: 2033-05-06

Abstract

The utility model relates to a high-integration inversion assembly device which comprises a capacitor and a power module, wherein the capacitor and the power module are respectively arranged on two sides of a supporting bottom plate, and the capacitor is provided with an input terminal, an output terminal, a supporting boss and a radiating aluminum plate; the output terminal is arranged at the top of the supporting boss, and the heat dissipation aluminum plate is in locking contact with the back surface of the supporting bottom plate through filling heat conducting glue; the input copper terminals of the power module are respectively in locking connection with the output terminals of the capacitor. Compared with the prior art, the utility model has the advantages of high integration level and the like.

Description

High-integration inversion assembly device

Technical Field

The utility model relates to the technical field of motor inverter components, in particular to a high-integration inverter component device.

Background

In the three-in-one bridge system, the inverter component converting DC into AC is used as the most core part of the motor controller, and the modular design development of the inverter component is the current important development direction. As shown in figure 2, the existing inversion output assembly is characterized in that a core part power module, a film capacitor and a current sensor are flatly arranged above a bottom plate, and support brackets are arranged at the bottoms of the film capacitor and a three-phase output part; the bottom plate is internally integrated with a heat dissipation water tank and a cavity space for installing the thin film capacitor. The core parts in the inversion assembly device are generally tiled, the occupied area of the inversion assembly in the width direction is too large, the installation is inflexible, and the requirement of customer platformization cannot be met; the water channel structure adopting the tiled layout is generally not compatible with the heat dissipation requirement of the capacitor, and is not beneficial to improving the reliability of the capacitor; and all need the switching support to support the transition between electric capacity and the module, between module and the three-phase output, the integrated level is not high, has increased material cost. CN204859061U discloses a motor controller, a plurality of power modules and capacitor modules are respectively installed on the upper surface and the lower surface of a radiator, and the radiator is used for uniformly radiating heat for the power modules and the capacitor modules. However, the patent requires a control circuit board to drive the power module to work through a driving circuit board, and requires a direct current composite copper bar to electrically connect the power module and the capacitor module together, so that the structure is complex and the integration level is low.

Disclosure of Invention

The present utility model is directed to a highly integrated inverter assembly device that overcomes the above-mentioned drawbacks of the prior art.

The aim of the utility model can be achieved by the following technical scheme:

the high-integration inversion assembly device comprises a capacitor and a power module which are respectively arranged on two sides of a supporting bottom plate, wherein a control board is arranged above the power module, the device further comprises a current detection device and a three-phase copper bar, the capacitor is provided with an input terminal, an output terminal, a supporting boss and a heat dissipation aluminum plate, the heat dissipation aluminum plate is in a cuboid shape, the input terminal and the output terminal are arranged on one side of the capacitor, and the arrangement direction of the input terminal and the output terminal is parallel to the straight line where the length of the heat dissipation aluminum plate is positioned;

the output terminal is arranged at the top of the supporting boss, and the heat dissipation aluminum plate is in locking contact with the back surface of the supporting bottom plate through filling heat conducting glue;

the input copper terminals of the power module are respectively in locking connection with the output terminals of the capacitor.

Further, a rotary plug-in unit, an onboard discharge resistor, a low-voltage plug-in unit and an interlocking plug-in unit are arranged on the control board, the low-voltage plug-in unit and the interlocking plug-in unit are arranged on the same side of the control board, and the rotary plug-in unit is arranged on the side opposite to the side.

Further, three-phase copper bars sequentially penetrate through the current detection device, the three-phase copper bars are locked and fixed with an output copper terminal of the power module, and the three-phase copper bars comprise U-phase copper bars, V-phase copper bars and W-phase copper bars;

the stitch of the current detection device is connected with the control board, and the support leg of the current detection device is locked on the supporting bottom plate.

Further, the front surface of the supporting bottom plate is provided with an avoidance hole, a heat dissipation water tank and a sealing groove,

the avoidance hole is a through hole, the output terminal passes through the avoidance hole,

and a sealing ring is arranged in the sealing groove and seals the heat dissipation water tank and the power module.

Further, the back of the supporting bottom plate is provided with a water outlet, a water channel cover plate and a water inlet.

Further, the water channel cover plate is connected with the supporting bottom plate through friction stir welding.

Furthermore, a lamination design is adopted between the positive copper bar and the negative copper bar of the output terminal.

Further, the support boss is directly injection molded from the capacitor housing.

Further, the supporting bottom plate is connected with the capacitors and the power modules at the two sides through bolts.

Further, an input copper terminal of the power module is connected with an output terminal of the capacitor through a bolt.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the utility model, the supporting boss is integrated internally, the input copper terminals of the power module are respectively in locking connection with the output terminals of the capacitor, the power module and the capacitor are connected through the output terminals on the supporting boss, no direct-current composite copper bar is required to be arranged, the structure is simple, and the design of integrating various plug-ins and on-board discharging resistors on the control board is realized, so that the size of the inverter assembly is very compact, and the inverter assembly is beneficial to the flexible arrangement of the whole vehicle according to the needs.

(2) The utility model adopts the structure arrangement of upper and lower lamination, the power module and the thin film capacitor are arranged on the upper side and the lower side of the supporting bottom plate, and the module and the thin film capacitor can be radiated simultaneously during working, so that the reliability of the thin film capacitor is improved.

(3) The utility model is convenient to install, can adapt to different arrangement and interface requirements of self-made electric drives of a host factory, greatly expands application scenes, reduces development cost and shortens development period.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a conventional inverter output assembly;

FIG. 3 is a front view of the support floor of the present utility model;

FIG. 4 is a rear view of the support floor of the present utility model;

FIG. 5 is a schematic diagram of a thin film capacitor according to the present utility model;

FIG. 6 is a schematic diagram of a control board of the present utility model;

the power module comprises a control board 1, a power module 2, a supporting bottom plate 3, a capacitor 4, a U-phase copper bar 5, a V-phase copper bar 6, a W-phase copper bar 7 and a current detection device 8.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.

The utility model provides a high-integration inversion assembly device, and a structure diagram of the device is shown in fig. 1. The high-integration inverter component device adopts an upper-lower lamination layout, and mainly structurally comprises a control board 1, a power module 2, a supporting bottom board 3, a capacitor 4, a U-phase copper bar 5, a V-phase copper bar 6, a W-phase copper bar 7 and a current detection device 8. The capacitor 4 is a thin film capacitor.

Fig. 3 is a front view of the support base plate of the present utility model. As shown in fig. 3, the front surface of the supporting bottom plate 3 is provided with an avoidance hole 3-1, a heat dissipation water tank 3-2 and a sealing groove 3-3, wherein the avoidance hole 3-1 is used for avoiding the output terminal 4-2 part of the thin film capacitor 4; the heat dissipation water tank 3-2 is used for water-cooling heat dissipation of the power module 2; and a sealing ring is arranged in the sealing groove 3-3 and used for sealing the heat dissipation water tank 3-2 and the power module 2.

Fig. 4 is a rear view of the support floor according to the present utility model. As shown in fig. 4, the back of the supporting bottom plate 3 is provided with a water outlet 3-4, a water channel cover plate 3-5 and a water inlet 3-6; the water channel cover plate 3-5 is connected with the supporting bottom plate 3 body through friction stir welding.

FIG. 5 is a schematic diagram of a thin film capacitor according to the present utility model. As shown in fig. 5, the capacitor 4 is provided with an input terminal 4-1, an output terminal 4-2, a support boss 4-3, and a heat dissipating aluminum plate 4-4 structure. The shape of the heat dissipation aluminum plate 4-4 is cuboid, the input terminal 4-1 and the output terminal 4-2 are arranged on one side of the capacitor 4, the arrangement direction of the input terminal 4-1 and the output terminal 4-2 is parallel to the straight line where the length of the heat dissipation aluminum plate 4-4 is located, and the integration level of the structure is improved. The lamination design is adopted between the positive and negative copper bars of the output terminal 4-2 to reduce the equivalent series inductance; the supporting boss 4-3 is directly injection molded by the capacitor shell and is used for fixing the capacitor shell and the input copper terminal of the power module 2, so that parts are saved; the heat dissipation aluminum plate 4-4 is used for dissipating heat of the thin film capacitor 4 after being filled with heat conducting glue to be locked and contacted with the bottom of the supporting bottom plate 3 during installation.

Fig. 6 is a schematic diagram of a control board of the present utility model. As shown in FIG. 6, a rotary transformer plug-in 1-1, an on-board discharging resistor 1-2, a low-voltage plug-in 1-3 and an interlocking plug-in 1-4 are arranged above a control board 1. The low-voltage plug-in 1-3 and the interlocking plug-in 1-4 are arranged on the same side of the control board 1, and the rotary plug-in 1-1 is arranged on the side opposite to the side. The control board 1 can effectively improve the integration level of the inverter assembly device through the above integrated design.

The assembly steps of the utility model are as follows:

firstly, connecting a water channel cover plate 3-5 with a supporting bottom plate 3 body through friction stir welding;

a small amount of heat-conducting glue is smeared on the upper part of the heat-radiating aluminum plate 4-4 above the capacitor 4;

the capacitor 4 is fixed on the back of the supporting bottom plate 3 through bolts;

the U-phase copper bar 5, the V-phase copper bar 6 and the W-phase copper bar 7 respectively pass through a current detection device 8 and are locked and fixed with an output copper terminal of the power module 2;

placing a sealing ring in the sealing groove 3-3, and fixing the assembled power module 2 above the supporting bottom plate 3 through bolts;

the input copper terminal of the power module 2 is respectively connected with the output terminal 4-2 of the thin film capacitor 4 in a locking way through bolts;

fixing the control board 1 above the supporting bottom board 3 through bolts, and electrically connecting pins above the power module 2 with through holes of the control board 1 through soldering;

the assembly of the inverter assembly device with high integration of the present utility model is completed.

The current detection device 8 adopts a triplet current sensor, the model can be NACA.900Q6-S6/VA, pins of the current detection device 8 are connected with the control board 1, and the support legs of the current detection device 8 are locked on the supporting bottom board 3.

Compared with the prior art, the utility model has the advantages that the supporting boss 4-3 is integrated internally, the input copper terminal of the power module 2 is respectively in locking connection with the output terminal 4-2 of the capacitor 4, the power module 2 and the capacitor 4 are connected through the output terminal 4-2 on the supporting boss 4-3, the direct current composite copper bar is not required to be arranged, the structure is simple, the design of integrating various plug-ins and on-board discharging resistors on the control board comprises the rotary plug-in unit 1-1, the on-board discharging resistor 1-2, the low voltage plug-in unit 1-3 and the interlocking plug-in unit 1-4, the size of the inversion assembly is very compact, and the flexible arrangement of the whole vehicle according to the needs is facilitated.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. The high-integration inversion assembly device comprises a capacitor (4) and a power module (2) which are respectively arranged on two sides of a supporting bottom plate (3), wherein a control board (1) is arranged above the power module (2), and the high-integration inversion assembly device is characterized in that the high-integration inversion assembly device further comprises a current detection device (8) and three-phase copper bars, the capacitor (4) is provided with an input terminal (4-1), an output terminal (4-2), a supporting boss (4-3) and a heat dissipation aluminum plate (4-4), the heat dissipation aluminum plate (4-4) is in a cuboid shape, the input terminal (4-1) and the output terminal (4-2) are arranged on one side of the capacitor (4), and the arrangement direction of the input terminal (4-1) and the output terminal (4-2) is parallel to a straight line where the length of the heat dissipation aluminum plate (4-4) is located;

the output terminal (4-2) is arranged at the top of the supporting boss (4-3), and the heat dissipation aluminum plate (4-4) is in locking contact with the back of the supporting bottom plate (3) through filling heat conducting glue;

the input copper terminals of the power module (2) are respectively in locking connection with the output terminal (4-2) of the capacitor (4).

2. The high-integration inverter assembly device according to claim 1, wherein the control board (1) is provided with a rotary transformer plug-in unit (1-1), an on-board discharging resistor (1-2), a low-voltage plug-in unit (1-3) and an interlocking plug-in unit (1-4), the low-voltage plug-in unit (1-3) and the interlocking plug-in unit (1-4) are arranged on the same side of the control board (1), and the rotary transformer plug-in unit (1-1) is arranged on the side opposite to the side.

3. The high-integration inverter assembly device according to claim 1, wherein three-phase copper bars sequentially pass through the current detection device (8), are locked and fixed with output copper terminals of the power module (2), and comprise a U-phase copper bar (5), a V-phase copper bar (6) and a W-phase copper bar (7);

the pins of the current detection device (8) are connected with the control board (1), and the support legs of the current detection device (8) are locked on the supporting bottom board (3).

4. The high-integration inverter assembly device according to claim 1, wherein the front surface of the supporting bottom plate (3) is provided with an avoidance hole (3-1), a heat dissipation water tank (3-2) and a sealing groove (3-3),

the avoidance hole (3-1) is a through hole, the output terminal (4-2) passes through the avoidance hole (3-1),

a sealing ring is arranged in the sealing groove (3-3), and the sealing ring seals the heat dissipation water tank (3-2) and the power module (2).

5. The highly integrated inverter assembly device according to claim 1, wherein the back surface of the support base plate (3) is provided with a water outlet (3-4), a water channel cover plate (3-5) and a water inlet (3-6).

6. The highly integrated inverter assembly device of claim 5, wherein the waterway cover plate (3-5) and the support base plate (3) are connected by friction stir welding.

7. The high-integration inverter assembly device according to claim 1, wherein a stacked design is adopted between the positive and negative copper bars of the output terminal (4-2).

8. A highly integrated inverter assembly device according to claim 1, characterized in that the support boss (4-3) is injection molded directly from the capacitor housing.

9. A highly integrated inverter assembly device according to claim 1, characterized in that the supporting base plate (3) is bolted to the capacitors (4) and the power modules (2) on both sides.

10. A highly integrated inverter assembly device according to claim 1, characterized in that the input copper terminal of the power module (2) is bolted to the output terminal (4-2) of the capacitor (4).