CN213185905U

CN213185905U - Electric automobile dual control ware heat dissipation shell

Info

Publication number: CN213185905U
Application number: CN202022048681.2U
Authority: CN
Inventors: 苗育巧; 刘刚
Original assignee: Sichuan Yituo Automotive Electronics Technology Co ltd
Current assignee: Sichuan Yituo Automotive Electronics Technology Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-05-11
Anticipated expiration: 2030-09-17

Abstract

The utility model relates to a double-controller heat dissipation shell of an electric automobile, which comprises a box body, a fluid cooling unit and an IGBT mounting part, wherein the box body is arranged on the electric automobile and is used for mounting an IGBT, the IGBT mounted in the box body is electrically communicated with a circuit system of the electric automobile, the fluid cooling unit is arranged at the bottom of an inner cavity of the box body and is hermetically communicated with a fluid cooling system on the electric automobile, and the IGBT mounting part is arranged above the fluid cooling unit; through this scheme, realized high-efficient cooling and portable technique under the circumstances of the whole inverter housing leakproofness of assurance.

Description

Electric automobile dual control ware heat dissipation shell

Technical Field

The utility model relates to a new energy automobile accessory technical field especially relates to and is used for new energy automobile dc-to-ac converter equipment field, and specifically speaking is an electric automobile dual control ware heat dissipation shell.

Background

The new energy automobile inverter shell is an internal important electronic element mounting carrier, and is also an inverter and a carrier mounted on a whole automobile, and plays roles of protecting electronic elements from being physically damaged by an external environment, cooling protection of heating electronic elements and shielding external electromagnetic interference.

A company xx project needs to configure a double-inverter for an electric automobile, so that a shell needs to be specially designed for the inverter, the shell needs to overcome a series of defects existing in a traditional shell, safety and reliability are achieved, and the requirement of the whole automobile is met.

Inverter requirements of the whole vehicle are as follows: 1. compact size and light weight, otherwise too large to be installed; 2. the heat dissipation is good, particularly, the IGBT is a high-heating element and needs rapid cooling, so that only water cooling can be selected, and the shell also needs good heat dissipation; 3. the strength of the whole structure is enough, and the vibration requirement of the whole vehicle is met; 4. the electromagnetic interference isolation performance is strong when the device is totally closed.

Traditional dc-to-ac converter adopts the mild steel sheet punching press to bend and forms, and internally mounted electronic component need be at the piece internal weld support of bending, because the reason of its structure, has following not enoughly:

1. the inverter shell cannot realize better full sealing, the electronic components cannot be cooled, and the cooling effect of the electronic components with high power and high heat productivity is poor due to the fact that air cooling is generally adopted;

2. the traditional shell cannot be completely sealed, so that the traditional shell cannot better protect the external environment from dust damage;

3. because of the bending piece, the selected material cannot be too thick, and the anti-electromagnetic interference effect is not good;

4. overall structure says, sheet metal structural strength is not enough, and on having the car of strong vibration, the installing support of inside welding drops easily, and it is easy not hard up after installing electronic component such as circuit board, inefficacy easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides an electric automobile dual control ware heat dissipation shell for solve current inverter shell can not effectively sealed and the cooling effect is not good and too heavy technical defect. The utility model discloses a set up box, fluid cooling unit, IGBT installation department isotructure, realized high-efficient cooling and light technique under the condition of the whole dc-to-ac converter shell leakproofness of assurance. Adopt the utility model discloses can effectively realize having realized high-efficient cooling and light technique under the condition of the whole dc-to-ac converter shell leakproofness of assurance afterwards.

In order to realize the technical scheme, the utility model discloses a following technical scheme realizes:

the utility model provides an electric automobile dual control ware heat dissipation shell which characterized in that: the heat-insulation box comprises a box body, a fluid cooling unit and an IGBT mounting part, wherein the fluid cooling unit is arranged at the bottom of an inner cavity of the box body and used for absorbing heat generated in the box body, and the IGBT mounting part is arranged above the fluid cooling unit.

In order to better realize the present invention, as a further description of the above technical solution, the fluid cooling unit includes a fluid flowing chamber, a partition plate, the fluid flowing chamber is connected to the bottom of the box body in a sealing manner, the partition plate has at least one, which is disposed in the inner chamber of the fluid flowing chamber and makes the inner chamber form a U-shaped fluid flowing channel.

As a further description of the above technical solution, the fluid cooling unit includes a fluid flow cavity and a partition plate, the bottom surface of the box body is recessed towards the inner cavity of the box body to form the fluid flow cavity with an open bottom, two fluid inlet and outlet joints respectively communicating with fluid flow channels on two sides of the side plate are arranged on the side wall of the fluid flow cavity, and the partition plate has at least one, which is arranged in the inner cavity of the fluid flow cavity and makes the inner cavity form a U-shaped fluid flow channel.

As a further description of the above technical solution, the inner cavity of the fluid flow chamber is staggered and arrayed with a plurality of rows of heat dissipation columns, and a cover plate connected by screws is disposed on the bottom surface of the fluid flow chamber, the rows of heat dissipation columns are located in the fluid flow channel of the fluid flow chamber, and the cover plate covers the fluid flow chamber to form a sealing structure in the fluid flow chamber.

As a further description of the above technical solution, the IGBT mounting part includes a plurality of heat conducting steel plates, and a screw connection column, the heat conducting steel plates are connected with the bottom surface of the inner cavity of the tank, one side surface of the heat conducting steel plates is in contact with the fluid flow cavity, and the other side surface is used for mounting the IGBT.

As a further description of the above technical solution, an upper cover is disposed on the top of the box body, a plurality of screw connection columns are disposed at the edge of the top of the heat conduction steel plate, and the screw connection columns are in threaded connection with the upper cover through bolts.

As further description of the technical scheme, a ventilating screw plug, a signal line integrated interface and a capacitor mounting position are arranged on the side wall of the box body.

As further described in the above technical solutions, the tank and the fluid flow chamber are made of aluminum alloy.

As a further description of the above technical solution, a plurality of connecting pieces are disposed on the side wall outside the box body.

As a further description of the above technical solution, a plurality of IGBT wire insertion holes are provided on the side wall of the box body.

As a further description of the above technical solution, a sealing gasket is further disposed at a junction of the fluid flow chamber and the cover plate.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the structure is compact and light, six IGBTs are installed at the same time, and the electromagnetic compatibility of each electronic component and element in the inverter is good;

2. the IGBT has good cooling effect and can meet the use requirements of various working conditions of the whole vehicle;

3. the whole sealing performance is good, the electromagnetic shielding effect and the effect of protecting internal electronic components can be well achieved, and the whole strength is good.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a first three-dimensional structure of the present invention;

fig. 2 is a schematic diagram of a second three-dimensional structure of the present invention;

fig. 3 is a schematic view of a three-dimensional structure of the back side of the present invention;

fig. 4 is a schematic plan view of the present invention;

fig. 5 is a schematic view of the C-C cross-section structure of the present invention.

The figure marks 1-box, 2-fluid cooling unit, 3-IGBT mounting part, 12-connecting piece, 13-upper cover, 14-fluid inlet and outlet liquid joint, 15-IGBT wire jack, 16-air-permeable screw plug, 17-signal wire integrated interface, 18-capacitor mounting position, 21-fluid flow cavity, 22-clapboard, 31-heat conducting steel plate, 32-screw connecting column, 211-sealing washer, 212-cover plate, 213-heat dissipation column row.

Detailed Description

The present invention will be described in detail and with reference to the preferred embodiments of the present invention, but the present invention is not limited thereto.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

The terms "upper", "lower", "left", "right", "inner", "outer", and the like refer to orientations or positional relationships based on the drawings, or the orientations or positional relationships that are conventionally used to place the products of the present invention, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "vertical" and the like do not require absolute perpendicularity between the components, but may be slightly inclined. Such as "vertical" merely means that the direction is relatively more vertical and does not mean that the structure must be perfectly vertical, but may be slightly inclined.

In the description of the present invention, it is also to be understood that the terms "disposed," "mounted," "connected," and the like are intended to be construed broadly unless otherwise specifically indicated and limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as a preferred embodiment, the present embodiment takes a structure in which one partition 22 is disposed in the fluid flow chamber 21 and forms a U-shaped fluid flow channel, two heat-conducting steel plates 31 are disposed, and six IGBT chips are mounted on the heat-conducting steel plates 31 as an example, as shown in fig. 1 to 5;

the utility model provides an electric automobile dual control ware heat dissipation shell which characterized in that: including box 1, fluid cooling unit 2, IGBT installation department 3, fluid cooling unit 2 sets up the bottom of the 1 inner chamber of box, it is used for absorbing the heat that produces in the box 1, IGBT installation department 3 sets up the top of fluid cooling unit 2.

In order to more clearly and clearly illustrate the present invention, as a preferred embodiment, it is known that electrical components generate a large amount of heat during use, while an IGBT chip, as one of the electronic components, generates a large amount of heat during use, and if the generated heat is not absorbed and dissipated, the IGBT and other electronic components around the IGBT may be burnt out together. In the prior art, the heat dissipation technology of the IGBT is mainly a technology of air cooling by using a small electric fan. The air-cooled heat dissipation technology has the technical defect of slow heat dissipation. To this technical defect, the utility model discloses a set up a fluid cooling unit 2 on box 1 to set up IGBT installation position at the 1 inner chamber of box that fluid cooling unit 2 corresponds, then utilize the fluid that flows in the follow fluid cooling unit 2 with the heat absorption of producing in the box 1, further derive the heat and give off through the fluid that flows, through this mode, finally realized carrying out quick refrigerated technique to the IGBT.

In order to better realize the present invention, as a further description of the above technical solution, the fluid cooling unit 2 includes a fluid flowing chamber 21 and a partition 22, the bottom surface of the box 1 is recessed towards the inner cavity of the box 1 to form the fluid flowing chamber 21 with an open bottom, two fluid inlet and outlet joints 14 respectively communicating with the fluid flowing channels on two sides of the side plate are disposed on the side wall of the fluid flowing chamber 21, and the partition 22 has at least one, which is disposed in the inner cavity of the fluid flowing chamber 21 and makes the inner cavity form a U-shaped fluid flowing channel.

For the sake of clarity and clarity of the present invention, in this embodiment, at least one partition 22 is disposed in the fluid flow chamber 21, and a U-shaped fluid flow channel is formed in the housing 1 through the partition 22, and further, the cooled fluid flows in the channel and introduces the heat generated on the IGBT into the fluid. In this embodiment, the partition 22 is provided and forms a U-shaped channel, so that the fluid flows in the fluid flow chamber 21 sufficiently, and further, the technology of sufficiently guiding out the heat generated in the box 1 is realized, and finally, the technology of rapidly cooling the IGBT is further realized.

It should be specifically and clearly noted that, as a preferred embodiment, the fluid described in this embodiment is water, heat transfer oil, or the like.

As a further description of the above technical solution, the cavity staggered array of the fluid flow chamber 21 has a plurality of heat dissipation column rows 213, the bottom surface of which is provided with a cover plate 212 connected by a screw, the heat dissipation column rows 213 are located in the fluid flow channel of the fluid flow chamber 21, and the cover plate 212 covers the fluid flow chamber 21 to form a sealing structure for the fluid flow chamber 21.

For clearer and more definite explanation, as a preferred embodiment, in this embodiment, a plurality of heat dissipation column rows 213 are arranged at staggered joints on the box body 211, and a method of increasing the contact area with the fluid by the heat dissipation column rows 213 is adopted, so that a technology that the fluid can sufficiently absorb heat in the flowing process in the fluid flowing cavity 21 is effectively ensured. As a preferred embodiment, the purpose of providing a cover plate 212 at the bottom end of the fluid flow chamber in this embodiment is to provide a detachable cover plate 212, which effectively ensures that the present invention can realize the technique of cleaning the inner cavity of the fluid flow chamber 21 by removing the cover plate 212 when cleaning is needed.

As a further description of the above technical solution, the IGBT mounting part 3 includes a plurality of heat conducting steel plates 31 and screw connection columns 32, the heat conducting steel plates 31 are connected to the bottom surface of the inner cavity of the box body 1, one side surface of each heat conducting steel plate is in contact with the fluid flow cavity 21, and the other side surface of each heat conducting steel plate is used for mounting the IGBT.

For clearer and more definite explanation, the present invention, as a preferred embodiment, effectively realizes the technology of conducting heat generated by the IGBT quickly by providing the heat conducting steel plate 31 and disposing the heat conducting steel plate 31 above the fluid flowing chamber 21 in this embodiment. As a preferred embodiment, in the present embodiment, the plurality of screw connection posts 32 are disposed on the heat conduction steel plate 31, so that the technology that the upper cover 13 of the box body 1 can be fixed and is not easy to deform is effectively ensured.

As a further description of the above technical solution, the top of the box body 1 is provided with an upper cover 13, the edge position of the top of the heat conducting steel plate 31 is provided with a plurality of screw connection columns 32, and the screw connection columns 32 are in threaded connection with the upper cover 13 through bolts.

For clearer and more definite explanation of the present invention, as a preferred embodiment, the upper cover 13 is provided in the present embodiment, and the upper cover 13 is screwed to the screw connection post 32 described above, so that the case 1 can be opened.

As a further description of the above technical solution, a ventilation screw plug 16, a signal line integrated interface 17, and a capacitor mounting location 18 are disposed on a side wall of the box body 1.

For clearer and more definite explanation, the present invention, as a preferred embodiment, integrates the structure of the air-permeable screw plug 16, the signal line integrated interface 17, the capacitor mounting position 18, etc. into the box 1, so that the whole structure is compact, and the technology of integrating the inverter is realized.

As a further description of the above technical solution, the tank 1 and the fluid flow chamber 21 are made of aluminum alloy.

It should be noted that, particularly and definitely, as the preferred embodiment, through set up insulating rubber pad in each junction in this embodiment, effectively guaranteed the utility model discloses a leakproofness can well play the electromagnetic shielding effect and protect the effect of inside electronic component, and the bulk strength is good.

It should be particularly and clearly noted that, as a preferred embodiment, the case 1 described in the present embodiment is made of an aluminum alloy material, and has a function of having a strong electromagnetic interference shielding property.

As a further description of the above technical solution, a plurality of connectors 12 are provided on the side wall of the exterior of the box 1.

As a further description of the above technical solution, a plurality of IGBT wire insertion holes 15 are provided on the side wall of the box body 1.

As a further description of the above technical solution, a sealing gasket 211 is further disposed at the joint of the fluid flow chamber and the cover plate.

For better realization the utility model discloses, as preferred embodiment, as shown in fig. 1 ~ 5, the utility model discloses a work flow is: firstly, will the utility model discloses according to the preceding step installation, furtherly, install the IGBT on the heat conduction steel sheet 31, furtherly, carry out the pipeline intercommunication with external fluid cooling case and fluid flow chamber 21, furtherly, the IGBT begins to work, furtherly, heat conduction steel sheet 31 conducts the heat that the IGBT produced, furtherly, the heat of production transmits to fluid flow chamber 21 through heat conduction steel sheet 31 in, furtherly, fluid in the fluid cooling case gets into fluid flow chamber 21 through the pipeline and takes away the heat that heat conduction steel sheet 31 conducts, finally, the realization carries out radiating technique to the IGBT.

Through the scheme, the efficient cooling and the light technology are realized under the condition that the sealing performance of the whole inverter shell is guaranteed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an electric automobile dual control ware heat dissipation shell which characterized in that: including box (1), fluid cooling unit (2), IGBT installation department (3), fluid cooling unit (2) set up the bottom of box (1), it is used for absorbing the heat that produces in box (1), IGBT installation department (3) set up the top of fluid cooling unit (2).

2. The double-controller heat dissipation shell of the electric automobile according to claim 1, characterized in that: the fluid cooling unit (2) comprises a fluid flow cavity (21) and a partition plate (22), the bottom surface of the box body (1) is sunken towards the inner cavity of the box body to form the fluid flow cavity (21) with the open bottom, two fluid inlet and outlet joints (14) which are respectively communicated with fluid flow channels on two sides of the side plate are arranged on the side wall of the fluid flow cavity (21), and the partition plate (22) is provided with at least one fluid inlet and outlet joint which is arranged in the inner cavity of the fluid flow cavity (21) and enables the inner cavity to form a U-shaped fluid flow channel.

3. The double-controller heat dissipation shell of the electric automobile according to claim 2, characterized in that: the inner cavity staggered array of the fluid flow cavity (21) is provided with a plurality of radiating column rows (213), the bottom surface of the radiating column rows (213) is provided with a cover plate (212) connected through screws, the radiating column rows (213) are positioned in a fluid flow channel of the fluid flow cavity (21), and the cover plate (212) covers the fluid flow cavity (21) to enable the fluid flow cavity (21) to form a sealing structure.

4. The double-controller heat dissipation shell of the electric automobile according to claim 2, characterized in that: IGBT installation department (3) include a plurality of heat conduction steel sheet (31), screw connection post (32), heat conduction steel sheet (31) are connected with the bottom surface of box (1) inner chamber, and one side thereof contacts with fluid flow chamber (21), and another side is used for installing the IGBT.

5. The double-controller heat dissipation shell of the electric automobile according to claim 4, wherein: the top of box (1) is provided with the upper cover, the border position at heat conduction steel sheet (31) top is provided with a plurality of screw spliced poles (32), screw spliced pole (32) pass through bolt and upper cover threaded connection.

6. The double-controller heat dissipation shell of the electric automobile according to claim 4, wherein: the side wall of the box body (1) is provided with a ventilating screw plug (16), a signal line integrated interface (17) and a capacitor mounting position (18).

7. The double-controller heat dissipation shell of the electric automobile according to claim 1, characterized in that: the box body (1) and the fluid flow cavity (21) are made of aluminum alloy.

8. The double-controller heat dissipation shell of the electric automobile according to claim 1, characterized in that: the side wall of the outer part of the box body (1) is provided with a plurality of connecting pieces (12).

9. The double-controller heat dissipation shell of the electric automobile according to claim 1, characterized in that: a plurality of IGBT wire jacks (15) are arranged on the side wall of the box body (1).

10. The double-controller heat dissipation shell of the electric automobile according to claim 3, wherein: and a sealing gasket (211) is arranged at the joint of the fluid flow cavity (21) and the cover plate (212).