Cooling body for an electrical and / or electronic structure group

Abstract

For a cooling body (1) for an electrical structure assembly and / or electronic structure assembly, particularly for electric or hybrid vehicles, wherein the cooling body (1) comprises at least one base plate (2) and at least one cover plate (3), it is proposed that a stack (4) consisting of intermediate plates (10, 20) is arranged between the base plate (2) and the cover plate (3), wherein the stack (4) comprises at least one first intermediate plate (10) and at least one second intermediate plate (20), wherein a plurality of first notches (11) are formed in the first intermediate plate (10). In the second intermediate plate (20), a plurality of second notches (21) are constructed, wherein the first notch (11) in the first intermediate plate (10) and the second notch (21) in the second intermediate plate (20) together form a cooling channel (5) in the cooling body (1) for conducting cooling fluid through the cooling body (1), wherein the cooling channel (5) extends from the inlet (8) of the cooling body (1) to the outlet (9) of the cooling body (1), wherein the cooling channel (5) is covered by the bottom plate (2) and the cover plate (3) of the cooling body (1).

Description

Technical Field

[0001] The present invention relates to a cooling body for an electrical and / or electronic structure assembly having the features of the preamble of independent claim 1. Background Technology

[0002] Power modules, such as converter or inverter structures, are used in hybrid or electric vehicles. For example, a converter is used to operate a motor, providing phase current to the motor. A power module can include, for example, a carrier substrate with wiring, on which power semiconductors are arranged, forming an electronic device unit together with the carrier substrate. During operation, heat is generated by the electronic device unit, which must be dissipated to a cooling body. For this purpose, the electronic device unit is thermally attached to the cooling body. It is known that the cooling body is provided with cooling channels in which a cooling fluid can flow, dissipating heat from the cooling body. So-called turbulence inserts can be provided in the cooling channels, ensuring better heat dissipation from the cooling body to the cooling fluid flowing through it. The turbulence inserts generate turbulent flow and increase the cooling surface area. Summary of the Invention

[0003] According to the present invention, a cooling body for an electrical and / or electronic structural assembly is provided, particularly for electric or hybrid vehicles. The cooling body includes at least one base plate and at least one cover plate. According to the present invention, a stack of intermediate plates is arranged between the base plate and the cover plate, wherein the stack includes at least one first intermediate plate and at least one second intermediate plate, wherein a plurality of first notches are formed in the first intermediate plate, and a plurality of second notches are formed in the second intermediate plate, wherein cooling channels are formed in the cooling body through the first notches in the first intermediate plate and the second notches in the second intermediate plate, for conducting cooling fluid through the cooling body, wherein the cooling channels extend from the inlet of the cooling body to the outlet of the cooling body, and wherein the cooling channels are covered by the base plate and the cover plate of the cooling body.

[0004] Advantages of the present invention

[0005] Compared to the prior art, the cooling body with the features of the independent claim has the following characteristics: cooling channels are formed in the cooling body in a particularly simple manner through notches in the intermediate plates. Here, the notches can advantageously and simply be punched out from the intermediate plates, for example. Therefore, the orientation of the cooling channels can be advantageously simple and flexible in configuration. The notches in the intermediate plates can advantageously be configured such that the cooling channels are constructed in a bifurcated manner, and the cooling medium in the cooling channels is guided to different planes in the cooling body. The cooling medium can advantageously and frequently change direction in the cooling body through the arrangement of the first notch in the first intermediate plate and the second notch in the second intermediate plate relative to each other, thereby generating turbulence. Therefore, the intermediate plates define the cooling channels for the cooling medium. The notches in the intermediate plates can be constructed and arranged relative to each other to form multi-branched cooling channels. Therefore, it is no longer necessary to insert separate turbulence inserts into the cooling channels. The turbulence inserts are formed through multiple notches in the different intermediate plates of the cooling body, then fixedly connected to the cooling body, and can advantageously be manufactured simply and with a fine mesh. Therefore, there is a particularly fine structure in the cooling body through which the cooling fluid can flow. Therefore, it is able to dissipate heat with particularly high efficiency. In this regard, the cooling body can be advantageously manufactured simply and cost-effectively, and advantageously allows for a large degree of freedom when the configuration has cooling channels with integrated turbulence inserts.

[0006] Advantageous configurations and extensions of the invention are achieved by the features given in the dependent claims.

[0007] According to an advantageous embodiment, a first notch in the first intermediate plate together forms a first grid-like structure in the first intermediate plate, and / or a second notch in the second intermediate plate together forms a second grid-like structure in the second intermediate plate. Through the grid-like structures in the plurality of intermediate plates, a turbulence insert integrated into the cooling body can be formed. It is no longer necessary to insert such a structured turbulence insert into the cooler. The turbulence insert can advantageously be formed integrally within the cooling body through the grid-like structure.

[0008] According to an advantageous embodiment, in the stack, a first notch in the first intermediate plate is arranged in a staggered manner relative to a second notch in the second intermediate plate. This staggered arrangement of the notches relative to each other allows for targeted flow of the cooling fluid within the cooling body, while simultaneously enabling control of the cooling power.

[0009] According to an advantageous embodiment, the main flow direction of the cooling fluid in the cooling channel extends substantially parallel to the extension plane of the intermediate plate. Therefore, the cooling fluid can advantageously flow through the cooling body in the direction of the extension plane and can simultaneously flow through different planes of the stack.

[0010] According to an advantageous embodiment, the cooling body has a first region and a second region, wherein a first notch in the first intermediate plate in the first region and / or a second notch in the second intermediate plate in the first region are constructed to be larger than the first notch in the first intermediate plate in the second region and / or the second notch in the second intermediate plate in the second region. Therefore, the first and second regions constitute regions with different geometries in the direction of the cooling channel. The smaller notch in the first region allows for a finer structure and branching of the cooling channel, thus generating higher turbulence and a larger contact surface between the cooling body and the cooling fluid. This increases the cooling power in the first region. The larger notch in the intermediate plate in the second region advantageously reduces turbulence and the contact surface compared to the first region. Therefore, the cooler power and the flow velocity of the cooling medium through the cooling body can be specifically controlled along the main flow direction of the cooling fluid by the different sizes of notches and / or different fine structures in the intermediate plates, and can be concentrated at localized points.

[0011] According to an advantageous embodiment, the stack comprises a plurality of first intermediate plates and a plurality of second intermediate plates, wherein the first and second intermediate plates are stacked alternately on top of each other in the stack. Therefore, the first intermediate plates can, for example, all be constructed identically, and / or the second intermediate plates can all be constructed identically. The alternating arrangement of the first and second intermediate plates in the stack produces a uniform structure in the stacking direction. The first intermediate plates can, for example, be punched together in a single step, for example, in a stacking method. Similarly, the second intermediate plates can, for example, be punched together in a single step, for example, in a stacking method. The alternating arrangement in the stack then ensures a structure in the cooling channels that advantageously increases the cooling surface area within the cooling channels.

[0012] According to an advantageous embodiment, the base plate, the cover plate, and the intermediate plate disposed between the base plate and the cover plate are brazed or fused together. Therefore, a stable cooling body with good heat transfer is achieved between the intermediate plate, the base plate, and the cover plate.

[0013] According to an advantageous embodiment, the intermediate plate is constructed as a punched part, wherein notches are punched out from the intermediate plate. This punching allows for the advantageous creation of small, sharp-edged notches and structures in the intermediate plate. The fine filament structure achievable in the punching process provides significantly higher cooling performance. Here, for example, multiple intermediate plates with punched structures can also be manufactured using conventional fixed processes. For example, intermediate plates can be produced in the same steps during sheet metal processing using a stacking method.

[0014] According to an advantageous embodiment, the inlet is located at the bottom plate or at the cover plate, and the outlet is located at the bottom plate or at the cover plate. This configuration allows the inlet or outlet to be advantageously and easily molded into the cooling body.

[0015] According to an advantageous embodiment, the base plate and / or cover plate and / or first intermediate plate and / or second intermediate plate have a thickness in a direction perpendicular to their extending plane, which is greater than 0.1 mm and / or less than 0.5 mm. Compared with the prior art, the use of thin intermediate plates enables the creation of significantly finer cooling structures, especially in the stacking direction. Therefore, the cooling body is able to conduct heat to the cooling fluid flowing through the cooling body with particularly large surface areas, and thus is able to do so with exceptional efficiency. Attached Figure Description

[0016] Embodiments of the present invention are shown in the accompanying drawings and described in more detail below. The drawings show:

[0017] Figure 1 An exploded view of an embodiment of the cooling body.

[0018] Figure 2 An embodiment of a stack consisting of intermediate plates,

[0019] Figure 3 Cross-section of an embodiment of the cooling body,

[0020] Figure 4 A top view of an embodiment of the first intermediate plate.

[0021] Figure 5 A top view of an embodiment of the second intermediate plate. Detailed Implementation

[0022] An embodiment of the coolant 1 is shown in the accompanying drawings. The coolant 1 can be used, for example, to cool electrical and / or electronic structural assemblies, such as power circuits. This can be, for example, the power circuits of a hybrid or electric vehicle, such as an inverter structure or converter structure. The electrical and / or electronic structural assemblies can be configured, for example, as power modules, and can include, for example, a carrier substrate with wiring, on which power semiconductors are arranged, forming an electronic device unit together with the carrier substrate. During operation, heat is generated by the electrical and / or electronic structural assemblies, which must be dissipated to the coolant 1. For this purpose, the electrical and / or electronic structural assemblies are arranged on the coolant 1, for example, on the support surface of the base plate 2 or the support surface of the cover plate 3. One or more layers can be arranged between the coolant 1 and the electrical and / or electronic structural assemblies for securing the electrical and / or electronic structural assemblies to the coolant 1.

[0023] Figure 1An exploded view of an embodiment of the cooling body 1 is shown. The cooling body 1 includes a base plate 2 and a cover plate 3. A plurality of first intermediate plates 10 and a plurality of second intermediate plates 20 are arranged between the base plate 2 and the cover plate 3. The first intermediate plates 10 and the second intermediate plates 20 together form a stack 4 of intermediate plates 10, 20 between the base plate 2 and the cover plate 3. In addition, the cooling body 1 includes an inlet 8 through which cooling fluid can be supplied to the cooling channels 5 in the cooling body 1. In addition, the cooling body 1 includes an outlet 9 through which cooling fluid can flow out from the cooling channels 5 and the cooling body 1. The cooling fluid can be, for example, water.

[0024] The base plate 2 and the cover plate 3 form a half-shell of the cooler. The base plate 2 forms the lower side of the cooler body 1. The cover plate 3 forms the upper side of the cooler body 1. The base plate 2 and / or the cover plate 3 are constructed, for example, as closed metal plates. The base plate 2 and / or the cover plate 3 can be constructed, for example, flat. However, the base plate 2 and / or the cover plate 3 can also have recesses, for example. The base plate 2 and / or the cover plate 3 can be constructed, for example, of a material with high thermal conductivity, such as metal, for example, aluminum. The base plate 2 and / or the cover plate 3 can have, for example, a thickness d greater than 0.1 mm and / or less than 0.5 mm. The thickness d is measured in a direction r perpendicular to the extending plane of the base plate 2 and / or the cover plate 3. In this embodiment, the base plate 2 and / or the cover plate 3 have, for example, a constant thickness d over the planar extension. The thickness d also refers, for example, to the thickness d of a sheet material from which the base plate 2 and / or the cover plate 3 are made. The base plate 2 and the cover plate 3 can, for example, have the same thickness d. The base plate 2 and the cover plate 3 extend, for example, at least partially parallel to each other in planar shape. The geometry of the base plate 2 and the cover plate 3 can be adapted to other requirements imposed on the cooling body 1. Therefore, support surfaces can be constructed, for example, on the base plate 2 and / or the cover plate 3, with other components abutting and fastened to said support surfaces, such as power modules. Additionally, as in... Figure 1 As shown in the embodiment, inlet 8 and outlet 9 can be constructed in cover plate 3.

[0025] A stack 4 consisting of intermediate plates 10 and 20 is arranged between the base plate 2 and the cover plate 3. In the stack 4, multiple intermediate plates 10 and 20 are stacked vertically. In this embodiment, the intermediate plates 10 and 20 in the stack 4 all have substantially the same surface extension dimensions. The intermediate plates 10 and 20 are respectively placed flat on top of subsequent intermediate plates 10 and 20 in the stack 4. Here, the intermediate plates 10 and 20 in the stack 4 are connected to each other, for example, by brazing or welding. The intermediate plates 10 and 20 may each have edge regions 15 and 25, which form the edges of the respective intermediate plates 10 and 20. The edge regions 15 and 25 of the intermediate plates 10 and 20 are stacked vertically in the stack 4 and connected to each other, for example, by brazing or welding. The intermediate plates 10 and 20 are constructed, for example, as metal plates. The intermediate plates 10 and 20 may be constructed, for example, of a material with high thermal conductivity, such as metal, for example, aluminum. Intermediate plates 10 and 20 may, for example, have a thickness d greater than 0.1 mm and / or less than 0.5 mm. Thickness d is measured in a direction r perpendicular to the extending plane of intermediate plates 10 and 20. Thickness d also refers, for example, to the thickness d of a sheet material from which intermediate plates 10 and 20 are made. Intermediate plates 10 and 20, for example, both have the same thickness d. Intermediate plates 10 and 20 are arranged parallel to each other in planar plane.

[0026] Notches 11 and 21 are formed in the intermediate plates 10 and 20. These notches 11 and 21 together form cooling channels 5 in the cooling body 1. Here, the notches 11 and 21 in the intermediate plates 10 and 20 of the stack 4 are constructed and arranged relative to each other in the stack such that a cooling channel 5 is formed in the cooling body 1, extending from the inlet 8 to the outlet 9. The notches 11 and 21 in the intermediate plates 10 and 20 stacked in different ways can, for example, have different shapes and / or surface extension dimensions. The notches 11 and 21 in the intermediate plates 10 and 20 stacked in different ways can also, for example, have the same shape and / or surface extension dimensions. The notches 11 and 21 in the intermediate plates 10 and 20 stacked in different ways can, for example, be arranged in a staggered manner in two successive intermediate plates 10 and 20 in the stack 4. The notches 11 and 21 in the intermediate plates 10 and 20 are constructed such that they alternately form cooling channels 5. Cooling channel 5, for example, passes through all the intermediate plates 10, 20 in stack 4.

[0027] The intermediate plates 10 and 20 in the stack 4 can, for example, be constructed identically and have the same notches 11 and 21. However, the intermediate plates 10 and 20 in the stack 4 can also be constructed differently and have different notches 11 and 21. In the embodiment of the cooling body 1 shown in the accompanying drawings, the stack 4 includes a plurality of first intermediate plates 10 and a plurality of second intermediate plates 20. In this embodiment, all the first intermediate plates 10 are constructed identically. Additionally, in this embodiment, all the second intermediate plates 20 are constructed identically. The first intermediate plates 10 and the second intermediate plates 20 are stacked alternately and sequentially in the stack 4.

[0028] exist Figure 2 The diagram shows a stack 4 consisting of a first intermediate plate 10 and a second intermediate plate 20, wherein the first intermediate plate 10 and the second intermediate plate 20 are constructed with identical structures. The first intermediate plate 10 and the second intermediate plate 20 are stacked alternately. Here, a first notch 11 in the first intermediate plate 10 and a second notch 21 in the second intermediate plate 20 are arranged in a staggered manner. Cooling channels 5 are formed through the notches 11 and 21 in the different intermediate plates 10 and 20. Figure 3 As shown, the cooling channel 5 is covered and thus closed on the upper side of the stack 4 by the cover plate 3, and on the lower side of the stack 4 by the base plate 2.

[0029] exist Figure 4 The image shows a top view of the first intermediate plate 10. Figure 5 The diagram shows a top view of the second intermediate plate 20. A plurality of first notches 11 are formed in the first intermediate plate 10. A plurality of second notches 21 are formed in the second intermediate plate 20. The notches 11 and 21 are, for example, punched out from the intermediate plates 10 and 20. The notches 11 and 21 are openings that pass through the respective intermediate plates 10 and 20. Figure 4 As shown, a first notch 11 forms a first grid-like structure 12 at least in the region of the first intermediate plate 10. A second notch 21 in the second intermediate plate 20 forms a second grid-like structure 22 at least in the region of the second intermediate plate 20. The first grid-like structure 12 in the first intermediate plate 10 and the second grid-like structure 22 in the second intermediate plate 20 are arranged vertically stacked in the stack 4. In this embodiment, the first notch 11 forming the first grid-like structure 12 and the second notch 21 forming the second grid-like structure 22 have the same shape. The first notch 11 and the second notch 21 are arranged overlapping each other. The first grid-like structure 12 is shifted in the direction of the surface extension dimension of the intermediate plates 10, 20 with respect to the second grid-like structure 12. Therefore, the first notch 11 of the first grid-like structure 12 and the second notch 21 of the second grid-like structure 22 are not arranged directly vertically stacked in the stack 4, but are shifted relative to each other. This is in Figure 2 and Figure 3As shown in the diagram. Therefore, by the staggered arrangement of the first intermediate plate 10 and the second intermediate plate 20 in the stack 4, cooling channels 5 with multiple bends are created by the notches 11, 21 in each layer of the stack that are shifted relative to adjacent layers. Thus, cooling channels 5 with integrated turbulence inserts are created by the staggered notches 11, 21 in the intermediate plates 10, 20 within the stack 4. Here, the turbulence inserts are formed by the grid-like structures 12, 22 of the first intermediate plate 10 and the second intermediate plate 20 that are shifted relative to each other.

[0030] In the embodiment shown in the accompanying drawings, the main flow direction of the cooling fluid in the cooling body 1 extends substantially parallel to the extending planes of the intermediate plates 10, 20. Here, the cooling fluid is conducted through the different intermediate plates 10, 20 within the stack 4, and flows simultaneously, for example, in parallel, among the multiple intermediate plates 10, 20. The cooling channels are branched in the stack 4 and extend back and forth, for example, alternately, between the first intermediate plate 10 and the second intermediate plate 20. The center of the flow of the cooling fluid in the cooling channels 5 of the cooling body 1 forms this main flow direction.

[0031] The intermediate plates 10 and 20 can each have different regions, in which the corresponding notches 11 and 21 are constructed to different sizes. Therefore, the flow rate, and thus the flow velocity, can be advantageously adjusted by the size of the notches 11 and 21, and thus regions with high cooling power and regions with low cooling power can be specifically defined in the cooling body 1 by the configuration of the notches 11 and 21. Figure 4 and Figure 5 As shown, intermediate plates 10 and 20 each have a first region 6, in which the corresponding notches 11 and 21 are constructed to be larger than in the second region 7. Therefore, in the second region 7, a finer structure is formed in the stack 4 than in the first region 6. In the first region 6, the cooling channels 5 are branched to a lesser extent than in the second region 7.

[0032] Cooling fluid can flow through the inlet 8 of the cooling body 1 into the cooling channel 5, and can also flow out again from the cooling channel 5 of the cooling body 1 through the outlet 9 of the cooling body 1. The cooling channel 5 is constructed to guide the cooling fluid through the cooling body 1. The cooling channel 5 in the cooling body 1 extends from the inlet 8 of the cooling body 1 to the outlet 9 of the cooling body 1. The base plate 2 and the cover plate 3 cover the notches 11 and 21 in the intermediate plates 10 and 20 that abut against the base plate 2 and the cover plate 3. Therefore, the cooling channel 5 is covered by the base plate 2 on the lower side of the stack 4 and by the cover plate 3 on the upper side of the stack 4. The base plate 3 and the cover plate 3 abut against the stack 4 composed of the intermediate plates 10 and 20 and are fastened at the stack, for example by brazing or welding.

[0033] Of course, other embodiments and combinations thereof are also possible.

Claims

1. A cooling body (1) for electrical structure assemblies and / or electronic structure assemblies, wherein, The cooling body (1) includes at least one base plate (2) and at least one cover plate (3). The feature is that a stack (4) composed of intermediate plates (10, 20) is arranged between the bottom plate (2) and the cover plate (3), wherein the stack (4) includes at least one first intermediate plate (10) and at least one second intermediate plate (20), wherein a plurality of first notches (11) are constructed in the first intermediate plate (10), wherein a plurality of second notches (21) are constructed in the second intermediate plate (20), wherein the first notches (11) in the first intermediate plate (10) and the second notches (21) in the second intermediate plate (20) together form a cooling channel (5) in the cooling body (1) for conducting cooling fluid through the cooling body (1), wherein the cooling channel (5) extends from the inlet (8) of the cooling body (1) to the outlet (9) of the cooling body (1), wherein the cooling channel (5) is covered by the bottom plate (2) and the cover plate (3) of the cooling body (1). The first notch (11) in the first intermediate plate (10) together forms the first grid structure in the first intermediate plate (10), and / or the second notch (21) in the second intermediate plate (20) together forms the second grid structure in the second intermediate plate (20). The cooling body (1) has a first region (6) and a second region (7), wherein the first notch (11) in the first intermediate plate (10) in the first region (6) and the second notch (21) in the second intermediate plate (20) in the first region (6) are constructed to be larger than the first notch (11) in the first intermediate plate (10) in the second region (7) and the second notch (21) in the second intermediate plate (20) in the second region (7).

2. The heat sink of claim 1, wherein The electrical and / or electronic architecture groups are used in electric or hybrid vehicles.

3. The heat sink of claim 1, wherein In the stack (4), the first notch (11) in the first intermediate plate (10) is arranged in a staggered manner relative to the second notch (21) in the second intermediate plate (20).

4. The heat sink of claim 1, wherein The main flow direction of the cooling fluid in the cooling channel (5) extends substantially parallel to the extension plane of the intermediate plate (10, 20).

5. The heat sink of claim 1, wherein The stack (4) includes a plurality of first intermediate plates (10) and a plurality of second intermediate plates (20), wherein the first intermediate plates (10) and the second intermediate plates (20) are stacked alternately on top of each other in the stack (4).

6. The heat sink of claim 1, wherein The base plate (2), the cover plate (3), and the intermediate plates (10, 20) arranged between the base plate (2) and the cover plate (3) are brazed or fused together.

7. The heat sink of claim 1, wherein The intermediate plates (10, 20) are constructed as punched parts, wherein the notches (11, 21) are punched out from the intermediate plates (10, 20).

8. The cooling body according to claim 1, characterized in that, The inlet (8) is located at the bottom plate (2) or at the cover plate (3), wherein the outlet (9) is located at the bottom plate (2) or at the cover plate (3).

9. The heat sink of claim 1, wherein The base plate (2) and / or the cover plate (3) and / or the first intermediate plate (10) and / or the second intermediate plate (20) have a thickness (d) in a direction (r) perpendicular to its extension plane, the thickness being greater than 0.1 mm and / or less than 0.5 mm.

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