CN216793668U

CN216793668U - Heat dissipation structure of IGBT heat dissipation plate

Info

Publication number: CN216793668U
Application number: CN202220313705.9U
Authority: CN
Inventors: 谭准州; 刘明辉; 黄湘辉
Original assignee: Chenzhou Jianing Technology Co ltd
Current assignee: Chenzhou Jianing Technology Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-06-21
Anticipated expiration: 2032-02-16

Abstract

The utility model discloses a heat dissipation structure of an IGBT (insulated gate bipolar transistor) heat dissipation plate, which relates to the technical field of heat dissipation plates and comprises an iron block, wherein a U-shaped copper pipe is arranged on one side of the iron block, and a connecting assembly is arranged on one side of the iron block; according to the utility model, two iron blocks are assembled in a splicing mode, the second connecting pipe drives the first connecting pipe through the rotating rod, the effect of clamping the second connecting pipe on the two iron blocks is realized, so that water can be simultaneously fed into copper pipes on the two iron blocks only by supplying water to a water inlet of one iron block, and the problem of water supply by erecting a plurality of water pipes outside the iron blocks is avoided.

Description

Heat dissipation structure of IGBT heat dissipation plate

Technical Field

The utility model relates to the technical field of heat dissipation plates, in particular to a heat dissipation structure of an IGBT heat dissipation plate.

Background

The heat dissipation mode of IGBT in the machine controller mainly has two kinds: the air cooling and the water cooling are influenced by factors such as the installation space and the installation position in the automobile, and the motor controller adopting the air cooling heat dissipation mode has large volume and limited heat dissipation capacity and is difficult to meet the requirements, so that the heat dissipation requirement of the IGBT is met by adopting the water cooling radiator with small volume and stronger heat dissipation capacity.

The traditional IGBT heat dissipation mode adopting flow channel cooling fixes other parts such as the whole IGBT, a PCB and the like on a heat dissipation plate, but because the IGBT is fixed on the heat dissipation plate in a modularized manner, the heat dissipation area of the heat dissipation plate is required to be large, the IGBT is convenient to install, the traditional integrated heat dissipation plate structure is not flexible enough, usually, a plurality of water inlet pipes and water outlet pipes are communicated with one heat dissipation plate, so that the connection of the parts around the heat dissipation plate is complex, the laying difficulty of the water pipes is high, the whole heat dissipation plate cannot be changed according to the quantity change of the IGBT modules, and the heat dissipation area of part of the heat dissipation plate cannot be fully utilized; partial IGBT heat dissipation plate radiating effect is low, and inside discharge is less, can't accomplish effectual for the IGBT heat dissipation.

Therefore, the heat dissipation structure of the IGBT heat dissipation plate is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a radiating structure of an IGBT radiating plate, which aims to solve the problems of low flexibility and applicability and unobvious radiating effect of the radiating plate in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a heat dissipation structure of an IGBT heat dissipation plate comprises an iron block, wherein a U-shaped copper pipe is installed on one side of the iron block, and a connecting assembly is installed on one side of the iron block;

coupling assembling includes connecting hole, first connecting pipe, sealed sleeve pipe, oblique stripe, bull stick and gear, the connecting hole has been seted up to one side of iron plate, and is located the connecting hole and be linked together with U type copper pipe and be fixed with the second connecting pipe, the surface of second connecting pipe just is located the connecting hole endotheca and is equipped with first connecting pipe, the both ends of first connecting pipe are fixed with sealed sleeve pipe through the adhesion, the surface of first connecting pipe evenly is fixed with oblique stripe, there is the gear at the top that just is located the connecting hole in the iron plate through pivot swing joint, and is located the bottom and the oblique stripe looks joint of gear, one side of iron plate is rotated and is connected with the bull stick, and the one end that is located the bull stick extends to in the iron plate and fixes mutually through one side of spot welding and gear.

Furthermore, a clamping groove is symmetrically formed in one side of the iron block, clamping blocks are symmetrically fixed to the other side, located on the iron block, through spot welding, and the clamping blocks are correspondingly clamped with the clamping groove.

Furthermore, a limiting hole is formed in the top of the iron block and one side of the clamping block, a limiting bolt is arranged in the limiting hole, and the bottom of the limiting bolt penetrates through the limiting hole in the top of the iron block and is abutted against the limiting hole in one side of the clamping block.

Furthermore, a water inlet is formed in one end of the copper pipe and located on one side of the iron block, a water outlet is formed in the other end of the copper pipe, and a sealing valve is installed at one end of each of the water inlet and the water outlet.

Furthermore, empty slots are symmetrically fixed in the iron block and communicated with the copper pipe, and heat-conducting plates are uniformly arranged on the inner wall of the iron block and positioned in the empty slots.

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

1. according to the utility model, the two iron blocks are assembled in a splicing mode, and the second connecting pipes on the two iron blocks drive the first connecting pipes through the rotating rod, so that the effect of clamping the second connecting pipes on the two iron blocks is realized, the copper pipes on the two iron blocks can be simultaneously supplied with water only by supplying water to the water inlet of one iron block, the problem of water supply by erecting a plurality of water pipes outside the iron blocks is avoided, and compared with a spot welding mode or a whole assembling mode, the splicing mode has higher flexibility and wider applicability;

2. according to the utility model, the empty slot is formed in the iron block, and meanwhile, a large number of heat conducting plates extend from the iron block and enter the empty slot, when the IGBT starts to radiate heat, the heat can enter the liquid along the copper pipe and the iron block, the empty slot formed in the iron block increases the water amount entering the iron block, so that the heat radiation threshold of the whole IGBT heat radiation plate is increased, and meanwhile, the heat conducting plates in the iron block increase the contact area of the iron block and the water, so that the heat radiation effect of the whole heat conducting plate is better.

Drawings

FIG. 1 is a schematic diagram of a splicing structure of two iron blocks according to the present invention;

FIG. 2 is a schematic view of a separating structure of two iron blocks according to the present invention;

FIG. 3 is a schematic view of a second connecting pipe clamping structure of two iron blocks according to the present invention;

FIG. 4 is a schematic view of the connection structure of the gear and the slanted bar on the second connecting pipe according to the present invention;

FIG. 5 is a schematic side sectional view of an iron block according to the present invention.

In the figure: 1. an iron block; 2. a U-shaped copper pipe; 3. a water inlet; 4. a sealing valve; 5. a water outlet; 6. a limiting hole; 7. a limit bolt; 8. a connecting assembly; 801. connecting holes; 802. a first connecting pipe; 803. sealing the sleeve; 804. oblique stripes; 805. a rotating rod; 806. a gear; 9. a second connecting pipe; 10. a card slot; 11. a clamping block; 12. an empty groove; 13. a heat conducting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution:

as shown in fig. 1, two iron blocks 1 are assembled, and the heat dissipation plate is suitable for heat dissipation of two or more IGBTs, a traditional heat dissipation plate is generally an integral plate surface, when heat dissipation of a single IGBT is encountered, a large amount of working area is left on the plate surface, and waste of the heat dissipation plate is caused, the heat dissipation plate connection structure adopts a splicing type, two or more iron blocks 1 are assembled, so that the whole heat dissipation plate is more flexible, after the two iron blocks 1 are connected, copper pipes on the iron blocks 1 can also be communicated, so that the connection mode of an integral external water adding pipe is simpler, a plurality of water inlets 3 and water outlets 5 are not needed, and the connection difficulty of external connecting pieces of the heat dissipation plate is reduced;

during specific operation, as shown in fig. 2, a limiting hole 6 is installed at the top of the iron blocks 1, and meanwhile, a limiting bolt 7 is inserted into the limiting hole 6, when two iron blocks 1 need to be spliced, the limiting bolt 7 in the limiting hole 6 is firstly pulled out, then a clamping block 11 on one side of one iron block 1 is inserted into a clamping groove 10 of the other iron block 1, after the two iron blocks 1 are successfully spliced, the limiting bolt 7 in the limiting hole 6 is put down, and the bottom of the limiting bolt 7 at the moment falls into the limiting hole 6 on the clamping block 11, so that on one hand, the clamping fixation of the two iron blocks 1 is realized, the two iron blocks 1 are prevented from loosening after being spliced, on the other hand, the limiting bolt 7 is used for positioning, so that the connecting holes 801 on the two iron blocks 1 can be accurately butted, and the first connecting pipe 802 is convenient for butting the second connecting pipes 9 on the two iron blocks 1;

after the two iron blocks 1 are fixed, the connecting assembly 8 starts to take effect, and rotates the rotating rod 805 on one iron block 1, as shown in fig. 3 and 4, the rotating rod 805 is connected with the gear 806 in the iron block 1, when the gear 806 starts to rotate, the first connecting pipe 802 in the connecting hole 801 is driven to rotate and advance on the surface of the second connecting pipe 9, the outer surface of the first connecting pipe 802 is provided with the inclined stripe 804, meanwhile, the two ends of the first connecting pipe 802 are both provided with the sealing sleeves 803, so that the water leakage phenomenon at the connecting position after the two second connecting pipes 9 are connected is prevented, and when the first connecting pipe 802 fixes the two second connecting pipes 9, the two iron blocks 1 are in a connected state at the moment;

opening a sealing valve 4 at a water outlet 5 on one iron block 1, connecting an external water pipe with a water inlet 3, wherein at the moment, water flow slowly fills the whole iron block 1 along a U-shaped copper pipe 2, as shown in fig. 5, one side of the copper pipe is communicated with an empty groove 12 in the iron block 1, after the copper pipe is filled with water, the whole empty groove 12 is filled with water, and heat-conducting plates 13 are uniformly distributed on the side surfaces of the empty groove 12, when the IGBT starts to dissipate heat, heat can enter liquid along the copper pipe and the iron block 1, the empty groove 12 formed in the iron block 1 increases the amount of water entering the iron block 1, increases the heat dissipation threshold of the whole IGBT heat dissipation plate, and increases the contact area of the iron block 1 and the water by the heat-conducting plates 13 in the iron block 1, so that the heat dissipation effect of the whole IGBT heat dissipation plate 13 is better;

it should be noted that, after two iron blocks 1 are connected, the water outlet 5 on one iron block 1 should be sealed by a sealing valve 4 to prevent liquid from flowing out from the water outlet 5 on the iron block 1, and similarly, the second connecting pipe 9 on the other iron block 1 also needs to be sealed to prevent liquid leakage, after the two iron blocks 1 are fixed, the IGBT, the PCB and other parts can be fixed on the heat dissipation plate, that is, on the iron block 1, and when only one iron block 1 is needed, the water pipe is connected with the water inlet 3 and the water outlet 5 on the iron block 1 to complete a complete water circulation.

The working process of the utility model is as follows:

when the iron blocks 1 need to be integrally spliced, the limiting bolt 7 in the limiting hole 6 is firstly pulled out, the fixture block 11 on one side of one iron block 1 is inserted into the fixture groove 10 of the other iron block 1, the limiting bolt 7 in the limiting hole 6 is put down after the two iron blocks 1 are successfully butted, the bottom of the limiting bolt 7 falls into the limiting hole 6 in the fixture block 11 at the moment, the rotating rod 805 on one iron block 1 is rotated, the rotating rod 805 is connected with the gear 806 in the iron block 1, when the gear 806 starts to rotate, the first connecting pipe 802 in the connecting hole 801 is driven to rotate and advance on the surface of the second connecting pipe 9, and the first connecting pipe 802 fixes the second connecting pipes 9 on the two iron blocks 1;

the seal valve 4 of delivery port 5 department that will be located on an iron plate 1 is opened, locate to be connected outside water pipe and water inlet 3, rivers slowly are full of whole iron plate 1 along U type copper pipe 2 this moment, before the rethread water, close seal valve 4 on delivery port 5 earlier, it is sealed with opposite side second connecting pipe 9 on another iron plate 1 simultaneously, delivery port 5 on another iron plate 1 connects the water pipe, make rivers can be completely through two iron plate 1, a plurality of iron plate 1 connected mode of the same reason are the same, do not do too much to describe repeatedly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a IGBT heating panel heat radiation structure, includes iron plate (1), its characterized in that: a U-shaped copper pipe (2) is installed on one side of the iron block (1), and a connecting assembly (8) is installed on one side of the iron block (1);

the connecting assembly (8) comprises a connecting hole (801), a first connecting pipe (802), a sealing sleeve (803), oblique stripes (804), a rotating rod (805) and a gear (806), wherein the connecting hole (801) is formed in one side of the iron block (1), the connecting hole (801) is positioned in the connecting hole (801) and communicated with the U-shaped copper pipe (2) to be fixedly provided with a second connecting pipe (9), the first connecting pipe (802) is sleeved on the surface of the second connecting pipe (9) and positioned in the connecting hole (801), the sealing sleeve (803) is fixedly arranged at two ends of the first connecting pipe (802) through adhesion, the oblique stripes (804) are uniformly fixed on the outer surface of the first connecting pipe (802), the gear (806) is movably connected to the top of the connecting hole (801) in the iron block (1) through a rotating shaft, the bottom of the gear (806) is clamped with the oblique stripes (804), the rotating rod (805) is rotatably connected to one side of the iron block (1), and one end of the rotating rod (805) extends into the iron block (1) and is fixed with one side of the gear (806) through spot welding.

2. The heat dissipation structure of an IGBT heat dissipation plate according to claim 1, characterized in that: draw-in groove (10) have been seted up to one side symmetry of iron plate (1), and the opposite side that is located iron plate (1) is fixed with fixture block (11) through the spot welding symmetry, fixture block (11) correspond the joint with draw-in groove (10).

3. The IGBT heat dissipation plate heat dissipation structure of claim 1, wherein: spacing hole (6) have been seted up with one side of fixture block (11) at the top of iron plate (1), and are located spacing hole (6) and install spacing bolt (7), spacing hole (6) at iron plate (1) top and with fixture block (11) one side spacing hole (6) looks butt are run through to the bottom of spacing bolt (7).

4. The heat dissipation structure of an IGBT heat dissipation plate according to claim 1, characterized in that: one end of the copper pipe, which is positioned on one side of the iron block (1), is provided with a water inlet (3), the other end of the copper pipe is provided with a water outlet (5), and one ends of the water inlet (3) and the water outlet (5) are provided with sealing valves (4).

5. The heat dissipation structure of an IGBT heat dissipation plate according to claim 1, characterized in that: the copper pipe heat-conducting plate is characterized in that empty grooves (12) are symmetrically fixed in the iron block (1) and communicated with the copper pipe, and heat-conducting plates (13) are uniformly arranged on the inner wall of the iron block (1) and in the empty grooves (12).