CN215187939U - Double-sided water-cooling radiator, power assembly and electric vehicle - Google Patents

Abstract

A double-sided water-cooled radiator comprises a water inlet, a water outlet, a first single-sided radiating fin, a second single-sided radiating fin and double-sided radiating fins, wherein the first single-sided radiating fin is provided with a first radiating cavity, and the water inlet and the water outlet are respectively communicated with the first radiating cavity; the second single-side radiating fin is provided with a second radiating cavity; the double-sided radiating fin is provided with a third radiating cavity and a fourth radiating cavity, and the double-sided radiating fin is positioned between the first single-sided radiating fin and the second single-sided radiating fin; the first heat dissipation cavity, the third heat dissipation cavity, the fourth heat dissipation cavity and the second heat dissipation cavity are communicated in sequence. The two middle single-sided radiating fins are changed into the two double-sided radiating fins, so that the number of parts is reduced, the structure is simple, the cost is reduced, the assembly difficulty is reduced, and the assembly efficiency is improved.

Description

Double-sided water-cooling radiator, power assembly and electric vehicle

Technical Field

The application relates to the technical field of heat dissipation of electronic equipment, in particular to a double-sided water-cooling radiator, a power assembly and an electric vehicle.

Background

The electric automobile becomes the future trend of automobile industry development due to the advantages of energy conservation, environmental protection, reproducibility and the like. The electric automobile drives the automobile to run through electric power, and replaces a fuel engine to drive. Three-electric system as a core of the electric vehicle: the motor, a Motor Controller (MCU) and a battery are key factors influencing the power performance, the endurance, the safety and the reliability of the electric automobile and the like. The MCU is one of the core parts of the electric automobile, and plays an important role in signal and energy transmission in a new energy automobile: on one hand, the direct current electric energy in the battery is converted into alternating current to drive the motor to work, and on the other hand, the information from the vehicle control unit and the control mechanism (a brake pedal, an accelerator pedal and a gear shifting mechanism) is received to control the working state of the motor. One of the core devices in the motor controller is a power module, and the commonly used power module is an Insulated Gate Bipolar Transistor (IGBT), and since the power module has large loss and high self heat generation in the current inversion process, the requirement on the overall heat dissipation capability of the motor controller is high, and the requirement on a radiator is also high.

With the development requirements of the motor controller towards high voltage and high power density, more IGBT modules are put into the new generation motor controller to expand the capacity, and the inversion power of the MCU is improved. However, as the number of IGBTs increases, the heat productivity of the MCU also increases greatly, which puts higher demands on the heat dissipation performance of the heat sink. The new generation of motor controllers usually arranges the IGBTs in parallel in the MCU, and the arrangement scheme has strong expandability and high space utilization rate, and can meet the requirement of high power density. Therefore, the IGBT groups arranged in parallel generally use a double-sided water-cooled heat sink for heat dissipation.

At present, a double-sided water-cooled radiator is composed of 2n single-sided radiating fins 1, 4n-2 sealing rings 2, 1 water inlet 3 and 1 water outlet 4 (n is the number of parallel groups of IGBTs) as shown in fig. 1, all the single-sided radiating fins 1 are connected in parallel, and two single-sided radiating fins 1 are connected in a sealing manner through the sealing rings 2. Every two single face fin 1 dispel the heat to a IGBT group 5 of pressing from both sides between it, and the structure is complicated, and the equipment is loaded down with trivial details, and efficiency is lower, and the sealing point of sealing washer 2 is many, reveals the risk height.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a double-sided water-cooled heat sink, a power assembly and an electric vehicle, which are easy to assemble.

In a first aspect of the embodiments of the present application, a double-sided water-cooled heat sink is provided, which includes a water inlet, a water outlet, a first single-sided heat sink, a second single-sided heat sink, and a double-sided heat sink, where the first single-sided heat sink is provided with a first heat dissipation cavity, and the water inlet and the water outlet are respectively communicated with the first heat dissipation cavity; the second single-side radiating fin is provided with a second radiating cavity; the double-sided radiating fin is provided with a third radiating cavity and a fourth radiating cavity, and the double-sided radiating fin is positioned between the first single-sided radiating fin and the second single-sided radiating fin; the first heat dissipation cavity, the third heat dissipation cavity, the fourth heat dissipation cavity and the second heat dissipation cavity are communicated in sequence.

The double-sided water-cooled radiator has the advantages that two adjacent single-sided radiating fins in the middle are changed into the double-sided radiating fins, so that the number of parts is reduced, the structure is simple, the cost is reduced, the assembly difficulty is reduced, and the assembly efficiency is improved.

In one possible design of the first aspect, the first single-sided heat sink includes a first substrate, a first fin, and a first heat sink, and the first fin is disposed between the first substrate and the first heat sink. The first single-side radiating fin is simple in structure and convenient and fast to install.

In a possible design of the first aspect, the first substrate is provided with the first heat dissipation cavity, the first heat dissipation cavity accommodates the first fin, the first heat dissipation plate covers the first heat dissipation cavity, the first substrate is provided with a first water inlet and a first water outlet, the first water inlet reaches the first water outlet and the first heat dissipation cavity are communicated, the first water inlet is communicated with the water inlet, and the first water outlet is communicated with the water outlet. Establish first heat dissipation chamber on the first base plate and be convenient for the installation of first fin, and be convenient for and water inlet and delivery port intercommunication.

In a possible design of the first aspect, the first single-sided heat sink further includes two first communicating members, the first heat sink is provided with two first communicating holes, the first communicating holes are communicated with the first heat dissipation cavity, the two first communicating members are respectively arranged on one side of the first heat sink, which is away from the first substrate, one end of each first communicating member is communicated with one of the first communicating holes, and the other end of each first communicating member is communicated with the third heat dissipation cavity. The first single-face radiating fins are conveniently communicated with the third radiating cavity through the design of the first communicating piece, and the installation is convenient and fast.

In a possible design of the first aspect, the double-sided heat sink includes a third heat sink and a fourth heat sink, the third heat sink and the fourth heat sink are welded and fixed to each other, the third heat sink is provided with the third heat dissipation cavity, and the fourth heat sink is provided with the fourth heat dissipation cavity. The two cooling fins fixed by welding can improve the stability of the structure.

In a possible design of the first aspect, the third heat sink includes a third substrate, a third fin, and a third heat sink, the third fin is disposed between the third substrate and the third heat sink, the fourth heat sink includes a fourth substrate, a fourth fin, and a fourth heat sink, the fourth fin is disposed between the fourth substrate and the fourth heat sink, the third substrate and the fourth substrate are welded and fixed, and the third heat sink and the fourth heat sink are located on two sides of the double-sided heat sink. The third radiating fin and the fourth radiating fin are simple in structure, convenient to weld and connect and convenient to use when being installed.

A possible design of the first aspect, the third substrate is provided with a third heat dissipation chamber, the third heat dissipation chamber holds the third fin, the third heat dissipation plate covers on the third heat dissipation chamber, the third heat dissipation plate is provided with a third water inlet and a third water outlet, the third water inlet reaches third water outlet one side respectively with third heat dissipation chamber intercommunication, the opposite side respectively with first heat dissipation chamber or another two-sided fin the fourth heat dissipation chamber intercommunication, the third substrate is provided with two third intercommunicating pores, third intercommunicating pore one end respectively with third heat dissipation chamber intercommunication, the other end respectively with this two-sided fin the fourth heat dissipation chamber intercommunication. The third base plate is provided with a third heat dissipation cavity which is convenient for the installation of the third fin and is convenient for being communicated with the first single-side heat dissipation fin.

In a possible design of the first aspect, the fourth substrate is provided with the fourth heat dissipation chamber, the fourth heat dissipation chamber accommodates the fourth fin, the fourth heat dissipation plate covers the fourth heat dissipation chamber, the fourth substrate is provided with a fourth water inlet and a fourth water outlet, one side of each of the fourth water inlet and the fourth water outlet is respectively communicated with the fourth heat dissipation chamber, and the other side of each of the fourth water inlet and the fourth water outlet is respectively communicated with one of the third communication holes. The fourth base plate is provided with a fourth radiating cavity, so that the fourth fin can be conveniently installed and can be conveniently communicated with the third radiating fin.

In a possible design of the first aspect, the double-sided heat sink further includes two second communicating members, two fourth communicating holes are formed in the fourth heat sink, the fourth communicating holes are communicated with the fourth heat dissipation chamber, the two second communicating members are respectively disposed on one surface of the fourth heat sink, which is away from the fourth substrate, one end of each second communicating hole is communicated with one of the fourth communicating holes, and the other end of each second communicating hole is communicated with the third heat dissipation chamber or the second heat dissipation chamber of the other double-sided heat sink. The design of second intercommunication piece is convenient for two-sided fin and second heat dissipation chamber intercommunication, and the installation is convenient.

In one possible design of the first aspect, the third communication hole is sealed by welding with the fourth water inlet hole or around the fourth water outlet hole. The welding seal can reduce the leakage risk and improve the safety performance.

In a possible design of the first aspect, the double-sided heat sink further includes a fixing member, one end of the fixing member is fixedly connected to the third substrate, and the other end of the fixing member is fixedly connected to the fourth substrate, so as to fix the third substrate to the fourth substrate. Through setting up the mounting, can prevent two base plate relative movement of two-sided fin, and cause fixed insecure, have the risk of revealing and damaging.

In a possible design of the first aspect, the second single-sided heat sink includes a second substrate, a second fin, and a second heat sink, and the second fin is disposed between the second substrate and the second heat sink. The second single-side radiating fin is simple in structure and convenient and fast to install.

In a possible design of the first aspect, the second substrate is provided with a second heat dissipation cavity, the second heat dissipation cavity accommodates the second fin, the second heat dissipation plate covers the second heat dissipation cavity, the second heat dissipation plate is provided with a second water inlet and a second water outlet, one side of the second water inlet is communicated with the second heat dissipation cavity, and the other side of the second water inlet is communicated with a fourth heat dissipation cavity of the double-sided heat dissipation plate, which is close to the second single-sided heat dissipation plate. The second base plate is provided with a second heat dissipation cavity, so that the second fins can be conveniently installed and can be conveniently communicated with the fourth heat dissipation cavity.

In a possible design of the first aspect, the double-sided water-cooled heat sink further includes a connecting member, and the first single-sided fin and the double-sided fin that are adjacent to each other, the second single-sided fin and the double-sided fin, or two adjacent double-sided fins are fixedly connected by the connecting member. Through using the connecting piece to fix between the fin, can prevent between the fin because relative movement causes the structure loose, the radiating effect reduces, increases holistic stability can.

In a possible design of the first aspect, the double-sided water-cooled heat sink further includes a sealing member, and the peripheries of the communication positions between the adjacent first single-sided fin and the double-sided fin, between the adjacent second single-sided fin and the double-sided fin, or between the two adjacent double-sided fins are sealed by the sealing member. By providing the sealing member at the communication between the fins, leakage can be prevented, and safety performance can be increased.

A second aspect of the embodiment of the application provides a power assembly, including motor, reduction gear and controller, the reduction gear with the motor is connected, the controller with motor electric connection, the controller includes power module and two-sided water-cooling radiator, two-sided water-cooling radiator is first aspect and arbitrary one possible design two-sided water-cooling radiator, power module centre gripping respectively in adjacent first single face fin with between the two-sided fin the second single face fin with between the two-sided fin or two adjacent between the two-sided fin.

In a third aspect of the embodiments of the present application, there is provided an electric vehicle, including a powertrain, a battery, and wheels, wherein the powertrain is the powertrain of the second aspect; the battery provides electric energy for the power assembly; the wheels are connected with the speed reducer.

Drawings

Fig. 1 is a schematic perspective view of a double-sided water-cooled heat sink in the prior art.

Fig. 2 is a schematic perspective view of a double-sided water-cooled heat sink according to an embodiment of the present application.

Fig. 3 is a partially exploded perspective view of the double-sided water-cooled heat sink shown in fig. 2.

Fig. 4 is an exploded perspective view of a first single-sided fin of the double-sided water-cooled heat sink shown in fig. 3.

Fig. 5 is an exploded perspective view of the double-sided fins of the double-sided water-cooled heat sink shown in fig. 3.

Fig. 6 is an exploded perspective view of a second single-sided fin of the double-sided water-cooled heat sink shown in fig. 3.

Description of the main elements

Double-sided water-cooled radiator 100

Water inlet 10

Water outlet 20

First single-sided heat sink 30

First substrate 31

First heat dissipation cavity 311

First water inlet 312

First water outlet hole 313

First connection holes 314, 332

First fin 32

First heat dissipation plate 33

First via hole 331

First communicating member 34

Double-sided heat sink 40

Third heat sink 41

Third substrate 411

Third heat dissipation cavity 4111

Third communicating hole 4112

Third connecting holes 4113 and 4133

Third fin 412

Third heat sink 413

Third water inlet hole 4131

Third water outlet hole 4132

Fourth heat dissipation sheet 42

Fourth substrate 421

Fourth heat dissipation chamber 4211

Fourth water inlet 4212

Fourth water outlet hole 4213

Fourth connecting hole 4214, 4232

Fourth fin 422

Fourth heat sink 423

Fourth communication hole 4231

Second communicating member 43

Fixing member 44

Second single-sided heat sink 50

Second substrate 51

Second heat dissipation chamber 511

Second connection holes 512, 533

Second fin 52

Second heat dissipation plate 53

Second water inlet hole 531

Second water outlet hole 532

Connecting piece 60

Seal 70

Single-sided heat sink 1

Sealing ring 2

The water inlet 3

Water outlet 4

IGBT group 5

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

Hereinafter, the terms "first", "second", etc., if used, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified. "Upper," "lower," "left," "right," and like directional terms are defined relative to the schematically-disposed orientations of elements in the figures, and it is to be understood that the directional terms are relative terms, which are used for descriptive and clarity purposes and are intended to correspond to changes in the orientation in which the elements in the figures are disposed.

In the present application, the term "connected", if used, is to be understood broadly, unless otherwise explicitly stated or limited, for example "connected" may be a fixed connection, a detachable connection, or an integral part; may be directly connected or indirectly connected through an intermediate. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings, the drawings showing the partial structure of the device are not necessarily to scale, and are merely exemplary, which should not limit the scope of the invention.

As shown in fig. 2-3, a double-sided water-cooled heat sink 100 is provided according to an embodiment of the present application. The double-sided water-cooling radiator 100 can be applied to a controller (MCU) of an electric vehicle, and is used for cooling and radiating a power module of an inverter therein, particularly a multi-row parallel IGBT module (Insulated Gate Bipolar Transistor).

The double-sided water-cooled heat sink 100 includes a water inlet 10, a water outlet 20, a first single-sided heat sink 30, one or a plurality of stacked double-sided heat sinks 40, and a second single-sided heat sink 50. The water inlet 10 and the water outlet 20 are respectively arranged on the first single-sided radiating fin 30 and are communicated with the cavity in the first single-sided radiating fin 30. The water inlet 10 is used for injecting cooling water. The water outlet 20 is used for the outflow of liquid. One or a plurality of stacked double-sided fins 40 are disposed between the first single-sided fin 30 and the second single-sided fin 50. Two sides of the inner cavity of the adjacent first single-sided radiating fin 30, double-sided radiating fin 40 and second single-sided radiating fin 50 are communicated in sequence.

The power module is clamped between the first single-sided heat sink 30 and the double-sided heat sink 40 which are adjacent to each other, between the second single-sided heat sink 50 and the double-sided heat sink 40 which are adjacent to each other, or between two adjacent double-sided heat sinks 40. External cooling water enters the cavity of the first single-sided radiating fin 30 from the water inlet 10 and sequentially enters the cavities of the double-sided radiating fin 40 and the second single-sided radiating fin 50 which are communicated with the first single-sided radiating fin 30, and the cooling water flows in the cavities of the first single-sided radiating fin 30, the double-sided radiating fin 40 and the second single-sided radiating fin 50, so that heat of the power module clamped among the cavities is taken away, and finally the cooling water is discharged from the water outlet 20.

The water inlet 10 and the water outlet 20 are respectively disposed at two ends of one side of the first single-sided heat sink 30, but not limited thereto, and the positions of the water inlet 10 and the water outlet 20 may be changed as required.

The double-sided water-cooled heat sink 100 further includes a connecting member 60. The adjacent first single-sided radiating fin 30 and the double-sided radiating fin 40, the second single-sided radiating fin 50 and the double-sided radiating fin 40, or two adjacent double-sided radiating fins 40 are fixedly connected through a connecting piece 60.

The connecting member 60 may be a screw, a bolt, or the like.

The double-sided water-cooled heat sink 100 also includes a seal 70. The peripheries of the adjacent cavities of the first single-sided radiating fin 30 and the double-sided radiating fin 40, the second single-sided radiating fin 50 and the double-sided radiating fin 40, or the two adjacent double-sided radiating fins 40 are sealed by a sealing member 70.

The seal 70 may be a gasket, a seal, or the like.

As shown in fig. 4, the first single-sided heat sink 30 includes a first substrate 31, first fins 32, and a first heat sink 33. The first fin 32 is provided between the first substrate 31 and the first heat sink 33.

A first heat dissipation cavity 311 is formed on one side of the first substrate 31 close to the first heat dissipation plate 33. The first heat dissipation cavity 311 accommodates the first fin 32. The first heat dissipation plate 33 covers the first heat dissipation cavity 311. The first substrate 31 has a first inlet hole 312 and a first outlet hole 313. After assembly, the first water inlet hole 312 and the first water outlet hole 313 are communicated with the first heat dissipation cavity 311. The first water inlet hole 312 is communicated with the water inlet 10. The first water outlet hole 313 is communicated with the water outlet 20.

The water inlet 10 and the first water inlet hole 312, the water outlet 20 and the first water outlet hole 313 can be respectively brazed with the first substrate 31 through the water inlet 10 and the water outlet 20 for sealing connection, and can also be connected by arranging threads on the water inlet 10, the water outlet 20 and the first substrate 31, and sealing rings are sleeved at the threaded connection positions for sealing.

The first single-sided fin 30 further includes two first communication members 34. The first heat dissipation plate 33 is provided with two first communication holes 331. After assembly, the first communication hole 331 communicates with the first heat dissipation cavity 311. The two first communication members 34 are respectively disposed on a surface of the first heat dissipation plate 33 away from the first substrate 31, and one end of each of the first communication members is respectively communicated with one of the first communication holes 331, and the other end of each of the first communication members is respectively communicated with the double-sided heat dissipation plate 40, so as to communicate the double-sided heat dissipation plate 40 with the first single-sided heat dissipation plate 30.

The sealing member 70 is sleeved between the first communicating member 34 and the double-sided heat sink 40 to seal the first single-sided heat sink 30 and the double-sided heat sink 40.

The first base plate 31, the first fins 32 and the first heat dissipation plate 33 may be connected by welding, such as brazing welding, to ensure that the first heat dissipation cavity 311 is sealed and the first fins 32 do not move in the first heat dissipation cavity 311.

The first substrate 31 and the first heat sink 33 are further provided with a first connection hole 314 and a first connection hole 332, respectively.

When the first single-sided heat sink 30 and the double-sided heat sink 40 are fixed, one end of the connecting member 60 is fixed in the first connecting hole 314 and the first connecting hole 332, and the other end is fixed in the double-sided heat sink 40.

As shown in fig. 5, the double-sided heat sink 40 is formed by welding two single-sided heat sinks similar to the first single-sided heat sink 30, and includes a third heat sink 41 and a fourth heat sink 42. The third heat sink 41 and the fourth heat sink 42 are welded and fixed.

The third heat sink 41 includes a third base 411, a third fin 412, and a third heat sink 413. The third fin 412 is disposed between the third base 411 and the third heat sink 413. The fourth heat dissipation plate 42 includes a fourth base 421, a fourth fin 422, and a fourth heat dissipation plate 423. The fourth fin 422 is disposed between the fourth base 421 and the fourth heat sink 423. The third substrate 411 and the fourth substrate 421 are fixed by welding, and the third heat sink 413 and the fourth heat sink 423 are located on two sides of the double-sided heat sink 40.

A third heat dissipation cavity 4111 is formed on one side of the third substrate 411 close to the third heat dissipation plate 413. The third heat dissipation cavity 4111 accommodates the third fin 412. The third heat dissipation plate 413 covers the third heat dissipation chamber 4111. The third heat sink 413 has a third inlet hole 4131 and a third outlet hole 4132. Two third communicating holes 4112 are formed in the third base 411. One ends of the third communicating holes 4112 communicate with the third heat dissipating chambers 4111, and the other ends communicate with the fourth heat dissipating fins 42 of the double-sided heat dissipating fin 40.

When the power modules are two rows, there is one double-sided heat sink 40, and after the power modules are assembled, one side of the third water inlet 4131 and one side of the third water outlet 4132 are respectively communicated with the third heat dissipation cavity 4111, and the other side of the third water inlet 4131 and the other side of the third water outlet 4132 are respectively communicated with one of the first communication members 34, so as to communicate the third heat sink 41 with the first single-sided heat sink 30.

When the number of the power modules is greater than two, the number of the double-sided fins 40 is at least two, after the power modules are assembled, one side of the third water inlet 4131 and one side of the third water outlet 4132 close to the outer side are respectively communicated with the third heat dissipation cavity 4111, the other side of the third water inlet 4131 and the other side of the third water outlet 4132 are respectively communicated with one of the first communicating parts 34, one side of the other third water inlet 4131 and one side of the other third water outlet 4132 are respectively communicated with the third heat dissipation cavity 4111, the other side of the other third water inlet 4131 and the other third water outlet 4132 are respectively communicated with the fourth heat dissipation plate 42 of the other double-sided fin 40, so that the third heat dissipation plate 41 close to the outer side is communicated with the first single-sided heat dissipation plate 30, and the other third heat dissipation plate 41 is communicated with the fourth heat dissipation plate 42 of the other double-sided heat dissipation plate 40.

The third base 411, the third fin 412 and the third heat dissipation plate 413 may be connected by welding, such as brazing, to ensure that the third heat dissipation chamber 4111 is sealed and the third fin 412 does not move in the third heat dissipation chamber 4111.

The third substrate 411 and the third heat sink 413 are further provided with a third connecting hole 4113 and a third connecting hole 4133, respectively.

When the first single-sided heat sink 30 and the double-sided heat sink 40 are fixed, one end of the connecting member 60 is fixed in the first connecting hole 314 and the first connecting hole 332, and the other end is fixed in the third connecting hole 4113 and the third connecting hole 4133, so as to fixedly connect the first single-sided heat sink 30 and the third heat sink 41.

A fourth heat dissipation chamber 4211 is formed at a side of the fourth substrate 421 close to the fourth heat dissipation plate 423. The fourth heat dissipation chamber 4211 accommodates the fourth fin 422. The fourth heat dissipation plate 423 covers the fourth heat dissipation chamber 4211. The fourth base plate 421 is provided with a fourth water inlet hole 4212 and a fourth water outlet hole 4213. One sides of the fourth water inlet hole 4212 and the fourth water outlet hole 4213 are respectively communicated with the fourth heat dissipation chamber 4211, and the other sides of the fourth water inlet hole 4212 and the fourth water outlet hole 4213 are respectively communicated with one of the third communicating holes 4112.

The double-sided heat sink 40 further includes two second communication members 43. The fourth heat radiation plate 423 is provided with two fourth communication holes 4231. When assembled, the fourth communication hole 4231 communicates with the fourth heat dissipation chamber 4211.

When the power module is two rows, there is one double-sided heat sink 40, after assembly, the two second communication members 43 are respectively disposed on the side of the fourth heat sink 423 away from the fourth base plate 421, and one end of each second communication member is respectively communicated with one of the fourth communication holes 4231, and the other end of each second communication member is respectively communicated with the second single-sided heat sink 50, so as to communicate the fourth heat sink 42 with the second single-sided heat sink 50.

When the number of the power modules is more than two, the number of the double-sided heat dissipation fins 40 is at least two, after the power modules are assembled, the two second communication members 43 are respectively arranged on one surface of the fourth heat dissipation plate 423 away from the fourth base plate 421, one ends of the two second communication members 43 close to the outer side are respectively communicated with one of the fourth communication holes 4231, the other ends of the two second communication members 43 close to the outer side are respectively communicated with the second single-sided heat dissipation fin 50, one ends of the remaining second communication members 43 are respectively communicated with one of the fourth communication holes 4231, the other ends of the remaining second communication members 43 are respectively communicated with the third heat dissipation fin 413 of the other double-sided heat dissipation fin 40, so that the fourth heat dissipation fins 42 close to the outer side are communicated with the second single-sided heat dissipation fin 50, and the remaining fourth heat dissipation fins 42 are communicated with the third heat dissipation fins 41 of the other double-sided heat dissipation fin 40.

The sealing member 70 is sleeved between the second communication member 43 and the other of the double-sided fins 40 or the second single-sided fin 50, so as to seal the double-sided fins 40 and the other of the double-sided fins 40 or the second single-sided fin 50.

The fourth base plate 421, the fourth fin 422 and the fourth heat dissipation plate 423 may be connected by welding, such as brazing, to ensure that the fourth heat dissipation chamber 4211 is sealed and the fourth fin 422 does not move in the fourth heat dissipation chamber 4211.

The double-sided heat sink 40 also includes a fastener 44. One end of the fixing member 44 is fixedly connected to the third substrate 411, and the other end is fixedly connected to the fourth substrate 421, so as to fix the third substrate 411 and the fourth substrate 421.

The fourth base plate 421 and the fourth heat sink 423 are further provided with a fourth connection hole 4214 and a fourth connection hole 4232, respectively.

When the two double-sided heat sinks 40 are fixed, one end of the connecting member 60 is fixed to the fourth connection hole 4214 and the fourth connection hole 4232, and the other end is fixed to the third connection hole 4113 and the third connection hole 4133 of the other double-sided heat sink 40.

When the double-sided heat sink 40 and the second single-sided heat sink 50 are fixed, one end of the connecting member 60 is fixed to the fourth connection hole 4214 and the fourth connection hole 4232, and the other end is fixed to the second single-sided heat sink 50 to be fixedly connected.

The third base plate 411 and the fourth base plate 421 may be oppositely disposed and then welded by brazing, and the peripheries of the third communicating hole 4112, the fourth water inlet hole 4212 and the fourth water outlet hole 4213 which are opposite to each other are sealed by brazing.

As shown in fig. 6, the second single-sided heat sink 50 includes a second substrate 51, a second fin 52, and a second heat sink 53. The second fin 52 is provided between the second substrate 51 and the second heat sink 53.

A second heat dissipation cavity 511 is formed in one side of the second substrate 51, which is close to the second heat dissipation plate 53. The second heat dissipation chamber 511 accommodates the second fin 52. The second heat dissipation plate 53 covers the second heat dissipation chamber 511. The second heat dissipation plate 53 is provided with a second water inlet 531 and a second water outlet 532. After assembly, one side of the second water inlet 531 and one side of the second water outlet 532 are respectively communicated with the second heat dissipation cavity 511, and the other side of the second water inlet 531 and one side of the second water outlet 532 are respectively communicated with one of the second communication pieces 424 on the fourth heat dissipation fin 42 close to the second single-sided heat dissipation fin 50.

The second base plate 51, the second fins 52 and the second heat dissipation plate 53 may be connected by welding, such as brazing, to ensure that the second heat dissipation chamber 511 is sealed and the second fins 52 do not move in the second heat dissipation chamber 511.

The second substrate 51 and the second heat dissipation plate 53 are further respectively provided with a second connection hole 512 and a second connection hole 533.

When the second single-sided heat sink 50 and the double-sided heat sink 40 are fixed, one end of the connecting member 60 is fixed to the fourth connection hole 4214 and the fourth connection hole 4232, and the other end is fixed to the second connection hole 512 and the second connection hole 533 and is fixed thereto.

Referring to fig. 2, in operation, external cooling water enters the first heat dissipation chamber 311 through the first water inlet 312 from the water inlet 10, then enters the third heat dissipation chamber 4111 through the first communication hole 331 and the third water inlet 4131, enters the third heat dissipation chamber 4111 through the third communication hole 4112 and the fourth water inlet 4212 into the fourth heat dissipation chamber 4211, enters the fourth heat dissipation chamber 4211 through the fourth communication hole 4231 and the second water inlet 531 into the second heat dissipation chamber 511, then flows along the first fin 32, the third fin 412, the fourth fin 422 and the second fin 52 in the first heat dissipation chamber 311, the third heat dissipation chamber 4111, the fourth heat dissipation chamber 4211 and the second heat dissipation chamber 511, respectively, and then flows out of the first heat dissipation chamber 313, the first communication hole 331, the third communication hole 4132, the third communication hole 4112, the fourth communication hole 4213, the fourth communication hole 4231 and the second heat dissipation chamber 42311 through the first water outlet 313, the first communication hole 331, the third communication hole 4132, the third communication hole 4112 and the fourth communication hole 4213, The third heat dissipation chamber 4111, the fourth heat dissipation chamber 4211, and the second heat dissipation chamber 511, and is discharged through the water outlet 20. In the flowing process of the cooling water, the heat dissipated from the two surfaces of the power module sandwiched between the first heat dissipation plate 33 and the third heat dissipation plate 413, and the heat dissipated from the four heat dissipation plates 423 and the second heat dissipation plate 53 are absorbed, so that the heat is dissipated from the feeding module.

The embodiment of the application provides a two-sided water-cooling radiator 100, two single face fin through setting up between two power modules change into a welding and form two-sided fin 40, can cool off the heat dissipation to a plurality of power modules of placing side by side, the use of part such as sealing washer has been reduced, the sealing washer that will originally need to set up between two fin that set up between per two power modules cancels, and half fin between two power modules has been cancelled, moreover, the steam generator is simple in structure, the cost is reduced, the assembly degree of difficulty has been reduced, the packaging efficiency is improved, the risk that the sealing washer became invalid has been reduced, the sealing and the security performance of radiator have been improved.

It is understood that the first fin 32, the second fin 52, the third fin 412 and the fourth fin 422 are not limited to the structures shown in the drawings.

The embodiment of the application also provides a power assembly, and the power assembly can be applied to an electric vehicle. The power assembly comprises a motor, a speed reducer and a controller.

The speed reducer is connected with the motor. The controller is electrically connected with the motor and comprises a power module and the double-sided water-cooling radiator 100. The power modules are respectively clamped between the first single-sided radiating fin 30 and the double-sided radiating fin 40 which are adjacent to each other, between the second single-sided radiating fin 50 and the double-sided radiating fin 40 which are adjacent to each other, or between two adjacent double-sided radiating fins 40.

It should be understood that the controller also includes other control components, such as a motor control unit, a reducer control unit, and other common control elements, which are not described in detail herein.

The embodiment of the application further provides an electric vehicle, the electric vehicle adopts the power assembly.

The electric Vehicle can be a common electric Vehicle/Electric Vehicle (EV), a pure electric Vehicle (PEV/BEV), a Hybrid Electric Vehicle (HEV), an extended range electric Vehicle (REEV), a plug-in hybrid electric Vehicle (PHEV), a New Energy Vehicle (New Energy Vehicle), an electric bus, an electric motorcycle and the like.

The electric vehicle comprises a battery, wheels and a power assembly. The battery provides electric energy for the power assembly. And a motor of the power assembly is connected with the wheels through a speed reducer so as to drive the wheels to rotate.

It should be understood that the electric vehicle provided by the embodiment further includes common electric vehicle components such as a vehicle body and a vehicle door, which are not described in detail herein.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the disclosure of the present application.

Claims (17)

1. The utility model provides a two-sided water-cooling radiator, includes water inlet and delivery port, its characterized in that still includes:

the first single-side radiating fin is provided with a first radiating cavity, and the water inlet and the water outlet are respectively communicated with the first radiating cavity;

the second single-sided radiating fin is provided with a second radiating cavity;

the double-sided radiating fin is provided with a third radiating cavity and a fourth radiating cavity and is positioned between the first single-sided radiating fin and the second single-sided radiating fin;

the first heat dissipation cavity, the third heat dissipation cavity, the fourth heat dissipation cavity and the second heat dissipation cavity are communicated in sequence.

2. The double-sided water-cooled heat sink of claim 1, wherein the first single-sided heat sink includes a first base plate, a first fin, and a first heat sink plate, the first fin being disposed between the first base plate and the first heat sink plate.

3. The double-sided water-cooled heat sink as recited in claim 2, wherein the first base plate is provided with the first heat dissipation cavity, the first heat dissipation cavity accommodates the first fin, the first heat dissipation plate covers the first heat dissipation cavity, the first base plate is provided with a first water inlet hole and a first water outlet hole, the first water inlet hole and the first water outlet hole are communicated with the first heat dissipation cavity, the first water inlet hole is communicated with the water inlet, and the first water outlet hole is communicated with the water outlet.

4. The double-sided water-cooled heat sink as recited in claim 3, wherein the first single-sided heat sink further comprises two first connecting members, the first heat sink has two first connecting holes, the first connecting holes are connected to the first heat dissipation cavities, the two first connecting members are respectively disposed on a side of the first heat sink away from the first substrate, one end of each first connecting member is connected to one of the first connecting holes, and the other end of each first connecting member is connected to the third heat dissipation cavity.

5. The double-sided water-cooled heat sink as recited in any one of claims 1 to 4, wherein the double-sided heat sink includes a third heat sink and a fourth heat sink, the third heat sink and the fourth heat sink are welded and fixed to each other, the third heat sink is provided with the third heat dissipation cavity, and the fourth heat sink is provided with the fourth heat dissipation cavity.

6. The double-sided water-cooled heat sink as recited in claim 5, wherein the third heat sink includes a third base plate, a third fin and a third heat sink, the third fin is disposed between the third base plate and the third heat sink, the fourth heat sink includes a fourth base plate, a fourth fin and a fourth heat sink, the fourth fin is disposed between the fourth base plate and the fourth heat sink, the third base plate and the fourth base plate are welded and fixed, and the third heat sink and the fourth heat sink are disposed on two sides of the double-sided heat sink.

7. The double-sided water-cooled heat sink as recited in claim 6, wherein the third base plate is provided with the third heat dissipation chamber, the third heat dissipation chamber accommodates the third fin, the third heat dissipation plate covers the third heat dissipation chamber, the third heat dissipation plate is provided with a third water inlet and a third water outlet, one side of the third water inlet and the third water outlet are respectively communicated with the third heat dissipation chamber, the other side of the third water inlet and the third water outlet are respectively communicated with the first heat dissipation chamber or the fourth heat dissipation chamber of another double-sided heat dissipation plate, the third base plate is provided with two third communication holes, one end of each third communication hole is respectively communicated with the third heat dissipation chamber, and the other end of each third communication hole is respectively communicated with the fourth heat dissipation chamber of the double-sided heat dissipation plate.

8. The double-sided water-cooled heat sink as recited in claim 7, wherein the fourth base plate is provided with the fourth heat dissipation chamber, the fourth heat dissipation chamber accommodates the fourth fin, the fourth heat dissipation plate covers the fourth heat dissipation chamber, the fourth base plate is provided with a fourth water inlet hole and a fourth water outlet hole, one side of the fourth water inlet hole and one side of the fourth water outlet hole are respectively communicated with the fourth heat dissipation chamber, and the other side of the fourth water inlet hole and the other side of the fourth water outlet hole are respectively communicated with one of the third communication holes.

9. The double-sided water-cooled heat sink as recited in claim 8, wherein the double-sided heat sink further comprises two second communication members, two fourth communication holes are formed in the fourth heat sink, the fourth communication holes are communicated with the fourth heat dissipation chamber, the two second communication members are respectively disposed on a side of the fourth heat sink facing away from the fourth substrate, one end of each second communication member is respectively communicated with one of the fourth communication holes, and the other end of each second communication member is respectively communicated with the third heat dissipation chamber or the second heat dissipation chamber of the other double-sided heat sink.

10. The double-sided water-cooled heat sink as recited in claim 8, wherein the third communication hole is sealed by welding with the fourth water inlet hole or the periphery of the fourth water outlet hole.

11. The double-sided water-cooled heat sink as recited in any one of claims 6, 7, 9 and 10, wherein the double-sided heat sink further comprises a fixing member, one end of the fixing member is fixedly connected to the third base plate, and the other end of the fixing member is fixedly connected to the fourth base plate, so as to fix the third base plate and the fourth base plate.

12. The double-sided water-cooled heat sink of claim 1, wherein the second single-sided heat sink includes a second base plate, a second fin, and a second heat sink plate, the second fin being disposed between the second base plate and the second heat sink plate.

13. The double-sided water-cooled heat sink as recited in claim 12, wherein the second substrate is provided with the second heat dissipation cavity, the second heat dissipation cavity accommodates the second fin, the second heat dissipation plate covers the second heat dissipation cavity, the second heat dissipation plate is provided with a second water inlet and a second water outlet, one side of the second water inlet and one side of the second water outlet are respectively communicated with the second heat dissipation cavity, and the other side of the second water inlet and the other side of the second water outlet are respectively communicated with a fourth heat dissipation cavity of the double-sided heat dissipation plate close to the second single-sided heat dissipation plate.

14. The double-sided water-cooled heat sink as recited in claim 1 further comprising a connecting member, wherein the first single-sided fin and the double-sided fin, the second single-sided fin and the double-sided fin, or two adjacent double-sided fins are fixedly connected by the connecting member.

15. The double-sided water-cooled heat sink of claim 1, further comprising a sealing member, and an outer periphery of a communication portion between the adjacent first single-sided fin and the double-sided fin, between the adjacent second single-sided fin and the double-sided fin, or between two adjacent double-sided fins is sealed by the sealing member.

16. A powertrain, comprising:

a motor;

the speed reducer is connected with the motor;

the controller is electrically connected with the motor and comprises a power module and a double-sided water-cooled radiator, the double-sided water-cooled radiator is the double-sided water-cooled radiator in any one of claims 1 to 15, and the power module is respectively clamped between the adjacent first single-sided radiating fin and the double-sided radiating fin, between the second single-sided radiating fin and the double-sided radiating fin or between the two adjacent double-sided radiating fins.

17. An electric vehicle, comprising:

a locomotion assembly according to claim 16;

a battery to provide electrical energy to the power assembly;

and the wheels are connected with the speed reducer.

Images