CN109936965A

CN109936965A - Cooling circuit for (multiple) electronic component

Info

Publication number: CN109936965A
Application number: CN201811485885.3A
Authority: CN
Inventors: G.霍德布尔格
Original assignee: Valeo Systemes de Controle Moteur SAS
Current assignee: Valeo Systemes de Controle Moteur SAS
Priority date: 2017-12-19
Filing date: 2018-12-06
Publication date: 2019-06-25
Anticipated expiration: 2038-12-06
Also published as: FR3075564A1; FR3075564B1; CN109936965B

Abstract

A kind of cooling circuit (2) for electronic component, it include :-entrance (12), it exports (13), with-pipeline, it is received at circuit entrance and the fluid being discharged at circuit outlet can flow through the pipeline, the pipeline includes main body (11) and the lid (15) being fixed on the main body (11), the main body (11) and the lid (15) have the shape of cooperation to limit for the pipeline: first part (20), with setting in the downstream of the first part (20) and along the second part (21) of the first part (20) extension, between first part (20) and second part (21), the not set sealing element between main body (11) and lid (15).

Description

Cooling circuit for (multiple) electronic component

Technical field

The present invention relates to the cooling circuits for being used for (multiple) electronic component.This or these electronic component for example belongs to static state Electric pressure converter, such as belong to DC/DC electric pressure converter or belong to inverter/rectifier.

Background technique

It is known that this or these electronic component is associated with cooling circuit, the cooling circuit allow to dissipate in operation by The calorie that these components generate.This circuit includes the pipeline formed for example between main body and lid, between main body and lid One or more sealing elements are planted along entire pipeline, to ensure the sealing of pipeline.

There is (multiple) sealing element along entire pipeline to need to be arranged between main body and lid along entire pipeline to allow to connect It receives the surface of this or these sealing element and needs using the immobilising device for this or these sealing element to be held in place.

Therefore, it is sealed along entire pipeline so that the realization of cooling circuit is complicated and expensive.

Need to dissipate using simple and cheap cooling circuit is implemented the calories of one or more electronic components, The especially power electronic component of quiescent voltage converter.

Summary of the invention

Present invention address that this needs, and the purpose is realized by the cooling circuit for electronic component, this is cold But circuit includes:

Entrance

Outlet, and

Pipeline, receives at circuit entrance and the fluid being discharged at circuit outlet is suitable for flowing through the pipeline, the pipeline Including main body and the lid that is fixed in main body, main body and lid have the shape of cooperation to limit for pipeline: first part and The second part that first part downstream is set and is extended along the first part,

There is no sealing element to be plugged between main body and lid between the first part and second part of pipeline.

In other words, according to the present invention, due to being not provided with any sealing element, institute between the first and second To be not provided with sealing element along entire pipeline.Therefore, between the first and second parts, fluid channel is present in main body and lid Between.It, can be by the clear passage that is reserved between main body and lid between the two parts therefore, because without sealing element Carry out fluid communication.The channel is also referred to as " leakage path " below, does not influence to be supplied to by the fluid to circulate in the duct The cooling of (multiple) component, this cooling depend primarily on the flow of the temperature of fluid rather than fluid, and first part and Sealing element is not present between two parts, this simplifies the manufacture in circuit and reduces costs.

Leakage path can be formed by the gap between two flat surfaces, and the gap can be in 0.05mm to 0.25mm In the range of.

In the sense that the application:

" longitudinal direction " refers to that fluid flows through the stroke directions of entire pipeline from the inlet to the outlet in the duct,

" channel cross-section at some point " refers to the size that the section of flow direction is orthogonal at this point,

Relative to the stroke of fluid in the duct from the inlet to the outlet, judge " upstream " and " downstream ",

" main flow " is related to flowing to the flow of the fluid of second part from first part, and " leakage flow " be related to via The leakage path of not set sealing element flows to the flow of the fluid of second part from first part.In the upstream of first part, phase Answer total flow in the downstream of second part, pipeline correspond to the summation of main flow and leakage flow.

The ratio of leakage flow and main flow is smaller than 5%.

Sealing system, such as multiple sealing elements or single continuous sealing part, can be set between main body and lid, rather than Between the first and second.The sealing system may insure sealing of the pipeline relative to the outside of cooling circuit.

Lid can realize with the fixation of main body via multiple fixing elements (such as screw), and these fixing elements can be with Other positions in addition between first part and second part are set.Other than stationary body and lid, these fix member Part can also be used in the one or more sealing elements of fixed and arranged between them.Due to not having between first part and second part Sealing element, therefore the presence of these fixing elements is not needed more.There is no fixing element to permit between first part and second part yet Perhaps reduce the size that one or more walls between the first part and the second part are set, because this or these wall is not Fixing element must be accommodated again.

Main body can limit the lateral end of first part and second part, and lid can be limited for these first Divide the bottom wall with second part.In other words, it is contemplated that the channel part at some of first part or second part points, it should Two opposite faces of channel part belong to main body, and one in other two face belongs to lid.

Lid can not have flat shape.Lid for example includes

The first area of a part of first part is limited,

The second area of a part of second part is limited, and

Intermediate region is arranged between first area and second area, and from for first part and second part Another bottom wall (bottom wall that is not limited by lid) extends beyond first area and second area.In other words, it covers Can be orthogonal in first part and/or second part in multiple planes of longitudinal direction has stairstepping.

Using such lid, main body can be between the first and second from for first part and second part Another bottom wall (bottom wall not limited by lid) extend beyond first area and the second area of lid.In other words, Being orthogonal in multiple planes of longitudinal direction in a part and/or second part, main body have setting in first part and the Region between two parts, the region from common reference extend beyond lid partly limit pipeline first part and second The region divided.Due to the sealing element not over leakage path, lid and main body it is this be arranged such that can be make every effort to directly from The fluid that first part is transmitted to second part generates curved path.This curved shape, is referred to as " diversion division ", Allow to reduce leakage flow.

Main body can also limit the bottom wall for first part and second part, so that in first part and second part Each extends in the following manner: on the one hand extending by covering between the bottom wall limited and the bottom wall limited by main body, another party Face extends between the lateral end limited by main body.In other words, in the channel part of first part or second part, two A opposite face belongs to main body, and one in other two opposite face belongs to lid and another belongs to main body.

In a variant, the second lid relatively installed with the first lid is set, and the second lid forms these first Divide the bottom wall other than the bottom wall formed by the first lid with second part.

In above-mentioned all situations, main body can be whole.

As already mentioned, it is allowed for the leakage path of the fluid from first part to second part there is no sealing element Presence, flow through the flow of the fluid in the channel be passed to second part from first part and without the fluid in the channel Ratio between flow is, for example, less than 5%.

In all the elements in front, the single same wall of main body can be separated first part and second part, also It is to say, first part is defined in a face of the wall of main body and second part is defined in another face of the wall of main body.

In this case, leakage path setting is between the wall and lid.As already said, the wall and Gai Zeke With with opposite flat surface, gap setting in the range of 0.05 to 0.25mm is somebody's turn to do between opposite flat surface Gap limits leakage path.

First part and second part can with one directly then another.

In particular example, pipeline has U-shape, that is to say, that the longitudinal path of fluid is described as " U ".First part An arm of U can be then formed, and second part forms another arm of U.

Still in this particular example, main body may include the wall for limiting the outer wall of pipeline, which continuously limits first The lateral end in the outside towards circuit of the lateral end followed by second part in the partial outside towards circuit.At this In example, the single same wall of main body can limit the inner wall of pipeline, limit the inside towards circuit of first part simultaneously Lateral end and second part the inside towards circuit lateral end.It can be somebody's turn to do along entire between the outer wall and lid Wall plants continuous sealing element, and without planting sealing element between inner wall and lid.Along entire outer wall, can be set for inciting somebody to action Lid is fixed to the fixing element of main body, and these fixing elements also allow the fixed one or more between the outer wall and lid close Sealing, continuous sealing part especially above-mentioned.Then, any fixing element cannot be received in inner wall, to allow to subtract The size of small inner wall, because it does not receive fixing element.

In all foregoing teachings, the restriction second part of the part and lid of the first area of the restriction first part of lid The part of second area can be undulatory, i.e., one wave part in each restriction longitudinal sectional drawing.

It is all among the above, fluid can be liquid, such as the mixture of water or water and ethylene glycol.

Another theme of the invention is a kind of component, comprising: cooling circuit as described above, and including the ministry of electronics industry Part.The component can be the power electronic component of quiescent voltage converter, such as power transistor, capacitor or inductor.It should Component can also be the control electronic component of this quiescent voltage converter, such as microcontroller.

Cooling circuit is it is possible thereby to associated with quiescent voltage converter.The converter is, for example, DC/DC electric pressure converter Or inverter/rectifier.

The quiescent voltage converter for example belongs to the In-vehicle networking of vehicle.In the case where DC/DC electric pressure converter, it can The voltage of 12V to be converted to the voltage of 24V, vice versa；Or the voltage of 12V is converted to the voltage of 48V, otherwise also So；Or the voltage of 24V is converted to the voltage of 48V, vice versa.

The quiescent voltage converter can could, alternatively, belong to the onboard charger of hybrid power or electric vehicle.

The main body of cooling circuit can be made into integration with the shell of quiescent voltage converter.

More generally, which is desirably integrated into hybrid power, electronic or pick into vehicle.

Detailed description of the invention

The present invention is more fully understood by the explanation of the non-limiting example of the invention of implementation below reading referring to attached drawing, In the accompanying drawings:

Fig. 1 and Fig. 2 shows the cooling circuit including embodiment according to the present invention respectively with perspective view and section view Quiescent voltage converter, and

Fig. 3 shows the details of Fig. 2 to amplify.

Specific embodiment

Fig. 1 shows quiescent voltage converter 1 comprising the cooling circuit 2 of embodiment according to the present invention.The converter 1 is described as DC/DC electric pressure converter in this example, such as the voltage of 12V is converted to the voltage of 48V, and vice versa.

As illustrated in fig. 1 and 2, which includes the printed circuit of the power electronic component of carrying such as power transistor 4。

These electronic components include in the space defined on the one hand by printed circuit 4, on the other hand by closed plate 6.

Converter 1 includes also realizing that the power supply of connection pin 8 connects in the other side relative to electronic component of printed circuit Connect device 7.These a part of pin 8 in magnetic core 9 Jing Guo its length, the problem of reducing Electro Magnetic Compatibility.Converter 1 also wraps Include signal connector 5.

As can be seen that connector 7 is arranged in height identical with cooling circuit 2, and electronic component is arranged in this and cools back 2 lower section of road.

In this example, converter 1 further includes shell 10, and shell 10 is made into integration with the main body 11 of cooling circuit 2 herein, Cooling circuit 2 will be described now.

It can be seen in FIG. 1 that the cooling circuit 2 include: entrance 12 and outlet 13, entrance 12 and outlet 13 in it is each It is a to be formed by fixed nozzle on the main body 11；And be limited to the pipeline between main body 11 and lid 15, pipeline herein via Screw 16 is fixed on the main body 11.

In the example considered, pipeline has U-shaped, that is to say, which defines the entrances 12 of cooling circuit 2 and outlet - backstroke is gone between 13.The arm that stroke is gone in the formation of the U-shaped defines the first part 20 of pipeline, and the U-shaped The arm for forming backstroke defines second part 21.The downstream of first part 20, and the two are arranged in second part 21 Part directly connects.

In the described example as can be seen that main body 11 includes wall 25, wall 25 is also referred to as " outer wall " of pipeline, continuous The lateral end in the outside towards circuit of ground restriction first part 20, followed by the outside towards circuit of second part 21 Lateral end.It shall yet further be noted that in this example, the single same wall 26 (also referred to as " inner wall " of pipeline) of main body limits the simultaneously The lateral end of the inside towards circuit of the lateral end and second part 21 of the inside towards circuit of a part 20.

A part of lid 15, also referred to as " first area 30 " define the bottom wall of first part 20, another portion of lid 15 Point, also referred to as " second area 31 ", define the bottom wall of the second part 21 of pipeline.First part for pipeline and second Each of point, the bottom wall opposite with lid 15 is limited by main body 11.

Therefore, in the described example:

The first part 20 of pipeline in the section for being orthogonal to longitudinal direction: limited respectively by lid 15 and main body 11 Extend between two bottom walls 30 and between two lateral ends limited respectively by outer wall 25 and inner wall 26,

The second part 21 of pipeline in the section for being orthogonal to longitudinal direction: limited respectively by lid 15 and main body 11 Extend between two bottom walls 31 and between two lateral ends limited respectively by outer wall 25 and inner wall 26,

It shall yet further be noted that inner wall 26 extends beyond the first area 30 and the secondth area of lid since the bottom wall limited by main body Domain 31, and the intermediate region 35 between region 30 and 31 of lid 15 also extends or even exceeds from the bottom wall limited by main body 11 Inner wall 26.

Although invisible in figure, planted continuously between outer wall 25 and lid 15 along the entire outer wall 25 herein Flat sealing element, and the sealing element passes through for the fixed screw 16 on the main body 11 of lid 15 to be held in place.

In the described example, without planting sealing element between inner wall 26 and the intermediate region 35 of lid 15, thus Between the first part 20 and second part 21 of pipeline, leakage path is set between main body 11 and lid 15.In inner wall 26 and lid Intermediate region 35 between the size in the channel that limits for example in the range of 0.05 to 0.25mm.

The end towards lid 15 of first area 30, second area 31 and the intermediate region 35 and inner wall 26 of lid it is corresponding Arrangement allows leakage path to limit diversion division between first part 20 and second part 21, such as a series of arrow institutes in Fig. 3 Show.

The flow of fluid in leakage path and second part 21 is flowed to from first part 20 and is not passed through leakage path The ratio of the flow of fluid is, for example, less than 5%.

In the accompanying drawings, it is also noted that the first area 30 of lid 15 and second area 31 are undulatory, that is to say, that they One wave part is limited in each leisure longitudinal cross-section.

The example that the present invention is not limited to just describe.

Claims

1. a kind of cooling circuit (2) for electronic component, comprising:

Entrance (12),

It exports (13), and

Pipeline, receives at circuit entrance and the fluid being discharged at circuit outlet can flow through the pipeline, the pipeline packet The lid (15) for including main body (11) and being fixed on the main body (11), the main body (11) and the lid (15) have the shape of cooperation Shape is to limit the pipeline: first part (20) and setting the first part (20) downstream and along this first The second part (21) for dividing (20) to extend,

Between the first part (20) and the second part (21), between the main body (11) and the lid (15) not Plant sealing element, so as between the first part and the second part between the main body (11) and the lid (15) There are fluid channels, since there is no sealing element, allow the freedom by reserving between the main body (11) and the lid (15) Channel carries out fluid communication between the two parts.

2. cooling circuit according to claim 1, via be arranged in addition to first part (20) and second part (21) it Between other than other places multiple fixing elements (16) will cover (15) be fixed to main body (11).

3. cooling circuit according to claim 1 or 2, sealing system setting is in main body (11) and covers between (15), without It is between first part (20) and second part (21).

4. cooling circuit according to any one of the preceding claims, the main body (11) limits first part (20) and the The lateral end of two parts (21), the lid (15) limit the bottom wall for being used for these first parts (20) and second part (21).

5. cooling circuit according to claim 4, the lid (15) has the of a part for limiting first part (20) One region (30), limit second part (21) a part second area (31) and setting in first area (30) and the Intermediate region (35) between two regions (31), and the intermediate region (35) from be used for first part (20) and second part (21) another bottom wall extends beyond first area (30) and second area (31).

6. cooling circuit according to claim 5, main body (11) between first part (20) and second part (21) from Another bottom wall for first part (20) and second part (21) extends beyond the first area (30) and of lid (15) Two regions (31).

7. cooling circuit according to any one of the preceding claims, pipeline has U-shaped, and first part (20) forms U's One arm, and second part (21) forms another arm of U.

8. cooling circuit according to claim 7, main body (11) includes the wall (25) for limiting the outer wall of pipeline, and the wall is continuous Ground limits the lateral end in the outside towards circuit of first part (20), followed by second part (21) towards the outer of circuit The lateral end of side, and main body includes limiting the single same wall (26) of the inner wall (26) of pipeline, which limits the simultaneously The lateral end of the inside towards circuit of the lateral end and second part (21) of the inside towards circuit of a part of (20).

9. cooling circuit according to claim 8, along the entire outer wall (25) between the outer wall (25) and lid (15) Continuous sealing element is planted, and without planting sealing element between inner wall (26) and lid (15).

10. a kind of component, comprising:

Cooling circuit (2) according to any one of the preceding claims, and

Electronic component.