CN210137281U - Power module of DC-DC converter - Google Patents
Power module of DC-DC converter Download PDFInfo
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- CN210137281U CN210137281U CN201920997484.XU CN201920997484U CN210137281U CN 210137281 U CN210137281 U CN 210137281U CN 201920997484 U CN201920997484 U CN 201920997484U CN 210137281 U CN210137281 U CN 210137281U
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- power module
- power
- laminated busbar
- cold plate
- input
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 31
- 239000003990 capacitor Substances 0.000 claims description 14
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- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
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- 238000000034 method Methods 0.000 abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052802 copper Inorganic materials 0.000 abstract description 8
- 239000010949 copper Substances 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910002601 GaN Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a power module of direct current-direct current converter, arrange, power module and power inductance including the stromatolite and install on the cold board of heat dissipation to female the arranging of stromatolite is provided with output terminal and input terminal, is used for and external connection, and power module and power inductance are arranged the electric terminal that is arranged on through the stromatolite and are arranged with the stromatolite and directly link to each other. The utility model discloses an adopt the female technique of arranging of stromatolite among the power module, no matter be inside electronic device connect or all be through the female terminal realization of arranging of stromatolite with external connection, do not contain in the whole power module and connect the copper bar, stray inductance in the module is very little, consequently can not produce very big peak voltage on each electronic device, has avoided the unusual damage of electronic device in the power module.
Description
Technical Field
The utility model relates to the field of electronic technology, specifically a power module of DC-DC converter.
Background
A DC-DC converter (DC/DC) is a voltage converter that converts an input voltage and then effectively outputs a controllable fixed or variable voltage, and is a power device composed of a plurality of electronic devices. With the improvement of the requirements on the efficiency and the power density of the DC/DC converter, the switching frequency and the switching speed of each electronic device in a power module of the DC/DC converter are very high, so that very high peak voltage is superposed on a bus, and overvoltage damage of the electronic devices is caused if the control is not good.
The existing method for solving the peak voltage in the power module is to add a peak absorption circuit on one hand, so that the peak voltage is consumed in the absorption circuit, but the cost and the power loss of the power module are increased; on the other hand, the more effective method is that the using amount of the copper bars is reduced as much as possible by optimizing the internal structural layout of the power module, the stray inductance caused by the copper bars is reduced, and then the peak voltage caused by the stray inductance is reduced. But still have the structure of using the copper bar to connect electron device among the power module, therefore the problem of peak voltage still exists, has only been alleviated, does not fundamentally solve the problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power module of direct current-direct current converter can solve among the prior art because adopt the copper bar to carry out inside and outside each electron device of module and connect, produces peak voltage, leads to the problem of electron device overvoltage damage.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a power module for a dc-dc converter, comprising:
a heat dissipation cold plate;
n power modules mounted on the cold plate;
n power inductors mounted on the heat sink cold plate;
the laminated busbar is arranged on the heat dissipation cold plate; the laminated busbar is provided with an output terminal and an input terminal;
an output side capacitor bank and an input side capacitor bank which are arranged on the laminated busbar;
the input side capacitor bank is connected with an input terminal on the laminated busbar, and the output side capacitor bank is connected with an output terminal on the laminated busbar; the N power modules and the N power inductors are directly connected with the laminated busbar through electric terminals on the laminated busbar, and N is a positive integer greater than or equal to 1.
Optionally, the power module further includes:
n drive plates mounted on each power module;
and the connectors are arranged on the N driving plates and used for connecting the control unit and the signal acquisition unit of the power module.
Optionally, the plug connector includes:
the low-voltage power supply system comprises a low-voltage power supply plug-in port, a driving signal plug-in port, a temperature signal plug-in port and a fault feedback signal plug-in port.
Optionally, the power module is an insulated gate bipolar transistor IGBT, a metal oxide semiconductor field effect transistor MOSFET, and/or a diode.
Optionally, the laminated busbar includes:
the positive bus layer of input, input and output negative bus layer, inductance connecting layer, the positive bus layer of output that stack in proper order, wherein, the positive bus layer of input, the negative bus layer of input and output, the inductance connecting layer, the positive bus layer of output passes through electric terminal and outside or inside electron device links to each other.
Optionally, the laminated busbar is mounted on the heat dissipation cold plate through a mounting bracket.
Optionally, the power inductor is an inductor with a heat dissipation casing.
Optionally, a mounting groove is formed in the heat dissipation cold plate, and the power inductor is mounted in the mounting groove.
Optionally, the mounting groove is filled with heat-conducting glue.
According to the above technical scheme, in the utility model discloses a DC-DC converter's power module, female row of stromatolite, power module and power inductance are installed on the cold board that dispels the heat to female arranging of stromatolite is provided with output terminal and input terminal for with external connection, power module and power inductance are female arranging through the stromatolite on electric terminal and the female row of stromatolite is direct continuous. It is visible, the utility model discloses an adopt the female technique of arranging of stromatolite among the power module, no matter be inside electron device connect or all be through the female terminal realization of arranging of stromatolite with external connection, do not contain in the whole power module and connect the copper bar, stray inductance in the module is very little, consequently can not produce very big peak voltage on each electron device, has avoided the unusual damage of electron device in the power module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power module of a dc-dc converter according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a power module of a dc-dc converter according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a 3D layout of a power module of a dc-dc converter according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a power module of direct current-direct current converter can solve among the prior art because adopt the copper bar to carry out inside and outside each electron device of module and connect, produces peak voltage, leads to the problem of electron device overvoltage damage.
As shown in fig. 1, an embodiment of the present invention discloses a power module of a dc-dc converter, including:
a heat sink cold plate 1.
It should be noted that the heat dissipation cold plate 1 has a stable mechanical structure, and generally adopts a water cooling manner to ensure the heat dissipation effect.
N power modules mounted on the heat sink cold plate 1; in fig. 1, 21, 22 to 2N are power modules.
Optionally, the N power modules are Insulated Gate Bipolar Transistors (IGBTs), Metal-Oxide-semiconductor field Effect transistors (MOSFETs), and/or diodes.
Besides the above-described IGBT, MOSFET, and diode, electronic devices made of silicon-based, silicon carbide-based, gallium nitride-based, or composite semiconductor materials having the same functions may be selected.
N power inductors mounted on the heat-dissipating cold plate 1; in fig. 1, 71, 72 to 7N are power inductors.
Optionally, the power inductor is an inductor with a heat dissipation casing.
It should be noted that, by using the inductor with the heat dissipation housing, the heat dissipation effect of the power inductor is further improved, and the normal operation of the power module of the dc-dc converter is ensured.
Optionally, a mounting groove is formed in the heat dissipation cold plate 1, and the power inductor is mounted in the mounting groove. The number of the mounting grooves of the heat dissipation cold plate 1 is the same as that of the power inductors, the power inductors are in contact with the heat dissipation cold plate 1, heat is conducted to the heat dissipation cold plate 1 through heat conduction, and the heat is conducted to the outside of a power module of the DC-DC converter through the heat dissipation cold plate 1 through a water cooling system.
Optionally, the mounting groove is filled with heat-conducting glue. The heat dissipation coefficient of the power inductor is increased through the heat conducting glue, and the heat dissipation effect of the power inductor is improved. The power inductor is in contact with the heat dissipation cold plate through the heat conduction glue, and the power inductor selected at the moment can be a common inductor without a heat dissipation shell.
The laminated busbar 4 is arranged on the heat dissipation cold plate 1; and the laminated busbar 4 is provided with an output terminal and an input terminal.
Optionally, the laminated busbar is mounted on the heat dissipation cold plate through a mounting bracket.
Optionally, the laminated busbar 4 includes:
the positive bus layer of input, input and output negative bus layer, inductance connecting layer, the positive bus layer of output that stack in proper order, wherein, the positive bus layer of input, the negative bus layer of input and output, the inductance connecting layer, the positive bus layer of output links to each other with outside or inside electron device through electric terminal.
It should be noted that, the input positive bus layer, the input and output negative bus layer, the inductance connection layer, and the output positive bus layer may be a plurality of independent electrical planes, or may be a plurality of independent areas of one electrical plane divided by electrical isolation means, for example, N electrical connections exist between N power modules and N power inductors in the power module, and the N electrical connections may be divided into N independent areas by electrical isolation means within one electrical plane.
And the output side capacitor bank 5 and the input side capacitor bank 6 are arranged on the laminated busbar 4.
The input side capacitor bank 6 is connected with an input terminal on the laminated busbar 4, and the output side capacitor bank 5 is connected with an output terminal on the laminated busbar 4; the N power modules and the N power inductors are directly connected with the laminated busbar 4 through the electric terminals on the laminated busbar 4, and N is a positive integer greater than or equal to 1.
It should be noted that the value of N is determined by the power requirement of the power module of the dc-dc converter, and the larger the required power is, the larger the value of N is, the smaller the required power is, and the smaller the value of N is.
It should be further noted that, considering that the heights of the power modules 21, 22 to 2N and the power inductors 71, 72 to 7N mounted on the heat dissipation cold plate 1 are not all the same relative to the heat dissipation cold plate, the height or the structure of the connection terminals on the laminated busbar 4 connected to the power modules and the power inductors is adjusted to achieve convenient and orderly connection of the power modules and the power inductors, and the laminated busbar 4 is mounted on the heat dissipation cold plate 1 through a dedicated mounting bracket, so that no large mechanical stress is generated on the connection electrical terminals of the power modules 21, 22 to 2N and the power inductors 71, 72 to 7N and the laminated busbar 4 to cause deformation of the laminated busbar 4.
In the power module of the dc-dc converter disclosed in this embodiment, the laminated busbar, the power module, and the power inductor are mounted on the heat dissipation cold plate, and the laminated busbar is provided with an output terminal and an input terminal for connecting to the outside, and the power module and the power inductor are directly connected to the laminated busbar through an electrical terminal on the laminated busbar. It is visible, the utility model discloses an adopt the female technique of arranging of stromatolite among the power module, no matter be inside electron device connect or all be through the female terminal realization of arranging of stromatolite with external connection, do not contain in the whole power module and connect the copper bar, stray inductance in the module is very little, consequently can not produce very big peak voltage on each electron device, has avoided the unusual damage of electron device in the power module.
Optionally, as shown in fig. 1, the power module further includes:
n drive plates mounted on each power module.
And the connectors are arranged on the N driving plates and used for connecting the control unit and the signal acquisition unit of the power module.
It should be noted that, a driver board is installed for each power module, the driver board is connected with a control unit and a signal acquisition unit of an external control power module through a connector, the driver board receives a control signal, drives the power module to perform corresponding actions according to instructions in the signal, and acquires a corresponding signal and feeds the signal back to the external signal acquisition unit when the driver board receives the signal acquisition signal, so that a user can adjust the dc-dc converter.
It should be noted that, when the N power modules are combined by using a certain electronic device or a plurality of electronic devices, the driving board mounted on each power module also adopts a corresponding circuit structure and control principle.
Optionally, the plug connector includes: the low-voltage power supply system comprises a low-voltage power supply plug-in port, a driving signal plug-in port, a temperature signal plug-in port and a fault feedback signal plug-in port.
It should be noted that the low-voltage power supply plug port is used for connecting an external low-voltage power supply to supply power to the drive board, so as to ensure normal operation of the drive board, the drive signal plug port is used for being connected with an external control unit, and the temperature signal plug port and the fault feedback signal plug port are used for being connected with an external signal acquisition unit.
For convenience of understanding, as shown in fig. 2, the power module of the dc-dc converter disclosed in the present invention is applied to a schematic circuit diagram of a fuel cell vehicle, wherein N is equal to 3, 21, 22, and 23 are taken as power modules, 71, 72, and 73 are taken as power inductors, 6 is an input side capacitor bank connected to an output end of the fuel cell, and 5 is an output side capacitor bank connected to positive and negative electrodes of the power cell. It should be noted that the dotted lines with alternating dots and lines indicate that all the connection points in the dotted frame are connected to the same layer on the laminated busbar 4.
In order to understand the structure of dc-dc converter's power module more directly perceived, as shown in fig. 3, for the utility model discloses a 3D overall arrangement schematic diagram of dc-dc converter's power module, wherein, on the female row of stromatolite, with the electric capacity that directional electric capacity of output side electric capacity group sign was in the same line, all belong to the electric capacity in the output side electric capacity group, with the electric capacity that directional electric capacity of input side electric capacity group sign was in the same line, all belong to the electric capacity in the input side electric capacity group.
It should be noted that, although only four power modules and corresponding driving boards and four power inductors are installed on the heat dissipation cold plate in the figure, in an actual design, the heat dissipation cold plate is not limited to the case of only adopting four power modules, driving boards and power inductors, and can be continuously added or deleted according to a layout mode according to power requirements.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (9)
1. A power module for a dc-dc converter, comprising:
a heat dissipation cold plate;
n power modules mounted on the cold plate;
n power inductors mounted on the heat sink cold plate;
the laminated busbar is arranged on the heat dissipation cold plate; the laminated busbar is provided with an output terminal and an input terminal;
an output side capacitor bank and an input side capacitor bank which are arranged on the laminated busbar;
the input side capacitor bank is connected with an input terminal on the laminated busbar, and the output side capacitor bank is connected with an output terminal on the laminated busbar; the N power modules and the N power inductors are directly connected with the laminated busbar through electric terminals on the laminated busbar, and N is a positive integer greater than or equal to 1.
2. The power module of claim 1, further comprising:
n drive plates mounted on each power module;
and the connectors are arranged on the N driving plates and used for connecting the control unit and the signal acquisition unit of the power module.
3. The power module of claim 2, wherein the plug connector comprises:
the low-voltage power supply system comprises a low-voltage power supply plug-in port, a driving signal plug-in port, a temperature signal plug-in port and a fault feedback signal plug-in port.
4. The power module of claim 1, wherein the power module is an Insulated Gate Bipolar Transistor (IGBT), a Metal Oxide Semiconductor Field Effect Transistor (MOSFET), and/or a diode.
5. The power module of claim 1, wherein the laminated busbar comprises:
the positive bus layer of input, input and output negative bus layer, inductance connecting layer, the positive bus layer of output that stack in proper order, wherein, the positive bus layer of input, the negative bus layer of input and output, the inductance connecting layer, the positive bus layer of output passes through electric terminal and outside or inside electron device links to each other.
6. The power module of claim 1, wherein the laminated busbar is mounted on a heat sink cold plate via a mounting bracket.
7. The power module as claimed in claim 1, wherein the power inductor is an inductor with a heat dissipation housing.
8. The power module as claimed in claim 1, wherein the heat sink cold plate is provided with a mounting groove, and the power inductor is mounted in the mounting groove.
9. The power module as claimed in claim 8, wherein the mounting groove is filled with a thermally conductive adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920997484.XU CN210137281U (en) | 2019-06-28 | 2019-06-28 | Power module of DC-DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920997484.XU CN210137281U (en) | 2019-06-28 | 2019-06-28 | Power module of DC-DC converter |
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| Publication Number | Publication Date |
|---|---|
| CN210137281U true CN210137281U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920997484.XU Active CN210137281U (en) | 2019-06-28 | 2019-06-28 | Power module of DC-DC converter |
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| CN (1) | CN210137281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112738996A (en) * | 2021-01-07 | 2021-04-30 | 东莞市美一瓦科技有限公司 | Laminated busbar structure and high-power power conversion device |
-
2019
- 2019-06-28 CN CN201920997484.XU patent/CN210137281U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112738996A (en) * | 2021-01-07 | 2021-04-30 | 东莞市美一瓦科技有限公司 | Laminated busbar structure and high-power power conversion device |
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