Power module support and power module

Abstract

The embodiment of the utility model provides a power module support and a power module, the power module support comprises an upper support and a lower support, the upper support is provided with a first electric connection part, the lower support is provided with a second electric connection part and a third electric connection part, the upper surface of the lower support is used for installing a power circuit, and the power circuit at least comprises a power semiconductor device. The power circuit is provided with a current input end, a current output end and a control end; the upper end of the second electric connection part is electrically connected with the current input end of the power circuit on the upper surface of the lower bracket, and the lower end is electrically connected with an external current input circuit; the upper end of the third electric connection part is electrically connected with the current output end of the power circuit, and the lower end is electrically connected with an external current output circuit; the lower end of the first electric connection part is electrically connected with the control end of the power circuit, and the upper end is electrically connected with an external driving circuit. The embodiment of the utility model can solve the technical problem that the existing power module is not perfect enough.

Description

Technical Field

[0001] This utility model relates to the field of electronics, and in particular to a power module bracket and a power module. Background Technology

[0002] Existing power modules typically have power circuitry arranged on a single circuit board, with the board and power circuitry encapsulated together as a single module. Power circuitry is generally used for controlling and converting electrical energy.

[0003] In existing power modules, the current input terminal, current output terminal, and control terminal of the power circuit are usually located on one side of the circuit board. The power module is powered on only one side, which leads to crowded circuit wiring, complex circuits, extremely high production line costs, and complex manufacturing processes. Moreover, it usually requires a sufficiently large circuit board to manufacture, resulting in a large power module size. Utility Model Content

[0004] This utility model provides a power module bracket, a power module, and a method for manufacturing the same, which solves the technical problem that existing power modules are not perfect.

[0005] To address the aforementioned technical problems, this utility model provides a power module bracket, including an upper bracket and a lower bracket for vertical assembly.

[0006] The upper bracket is provided with a first electrical connection part;

[0007] The lower bracket is provided with a second electrical connection part and a third electrical connection part, and the second electrical connection part and the third electrical connection part are separately provided;

[0008] The upper surface of the lower bracket is used to mount a power circuit, which includes at least one power electronic unit and has a current input terminal, a current output terminal, and a control terminal.

[0009] The upper end of the second electrical connection part is used to be electrically connected to the current input terminal on the upper surface of the lower bracket, and the lower end is used to be electrically connected to an external current input circuit.

[0010] The upper end of the third electrical connection part is used to be electrically connected to the current output terminal on the upper surface of the lower bracket, and the lower end is used to be electrically connected to the external current output circuit.

[0011] The lower end of the first electrical connection part is used to be electrically connected to the control end on the upper surface of the lower bracket, and the upper end is used to be electrically connected to the external drive circuit.

[0012] To address the aforementioned technical problems, this utility model embodiment also provides a power module, including the power module bracket described in any of the above claims, and further including a power circuit, wherein...

[0013] The power circuit is mounted on the upper surface of the lower bracket of the power module bracket. The power circuit includes at least one power electronic unit and has a current input terminal, a current output terminal, and a control terminal.

[0014] The upper end of the second electrical connection part of the power module bracket is electrically connected to the current input terminal of the power circuit, and the lower end is used to be electrically connected to an external current input circuit.

[0015] The upper end of the third electrical connection part of the power module bracket is electrically connected to the current output terminal of the power circuit, and the lower end is used to be electrically connected to an external current output circuit.

[0016] The lower end of the first electrical connection portion of the power module bracket is electrically connected to the control terminal of the power circuit, and the upper end is used for electrical connection to an external drive circuit.

[0017] Beneficial effects

[0018] The power module bracket and power module provided in this embodiment of the utility model include an upper bracket and a lower bracket for assembly. The control terminal of the power circuit installed in the lower bracket can be electrically connected to an external drive circuit through the first electrical connection part of the upper bracket. The current input terminal and current output terminal can be electrically connected to an external current input circuit and an external current output circuit, respectively, through the second electrical connection part and the third electrical connection part of the lower bracket. It can be seen that the control terminal of the power circuit installed in the power module bracket is connected to the external circuit through the upper bracket, and the current input terminal and current output terminal are connected to the external circuit through the lower bracket, realizing the circuit layering of the power module. The power module is electrically connected to the outside from both sides. Moreover, the control terminal of the power circuit often carries a small current, while the current input terminal and current output terminal often carry a large current. The small current flows from the top of the power module, and the large current flows from the bottom of the power module, realizing the layered arrangement of small and large currents. When such a power module is installed as a whole device, such as on an external circuit board, the lower ends of the second and third electrical connection parts on the lower surface of the lower bracket can be in close contact with the external circuit board, which is beneficial for heat dissipation of large currents. In addition, the overall circuit layout is more orderly, while the size of the power module is reduced. The power circuit is packaged into a two-layer power module. As an independent electronic device, the power module is easy to install and replace, and the manufacturing method is also simpler. It can be done by general engineers without the need for professional personnel to manufacture and install it.

[0019] Other features and corresponding beneficial effects of this utility model will be described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the description in this utility model specification. Attached Figure Description

[0020] Figure 1 A schematic diagram of the power module provided in Embodiment 1 of this utility model;

[0021] Figure 2 This is a circuit diagram provided for Embodiment 1 of the present utility model. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0023] Example 1:

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. An embodiment of this utility model provides a power module, see reference... Figure 1 The power module includes a power module bracket and a power circuit. The structure of the power module bracket is as follows:

[0025] The power module bracket includes an upper bracket 11 and a lower bracket 12 for upper and lower assembly. The upper bracket 11 is provided with a first electrical connection part 111. The lower bracket 12 is provided with a second electrical connection part 121 and a third electrical connection part 122, and the second electrical connection part 121 and the third electrical connection part 122 are provided separately.

[0026] The upper surface of the lower bracket 12 is used to mount a power circuit, which includes at least one power electronic unit 21 and has a current input terminal, a current output terminal and a control terminal.

[0027] The upper end of the second electrical connection part 121 is used to be electrically connected to the current input terminal on the upper surface of the lower bracket 12, and the lower end is used to be electrically connected to the external current input circuit.

[0028] The upper end of the third electrical connection part 122 is used to be electrically connected to the current output terminal on the upper surface of the lower bracket 12, and the lower end is used to be electrically connected to the external current output circuit.

[0029] The lower end of the first electrical connection part 111 is used to be electrically connected to the control terminal on the upper surface of the lower bracket 12, and the upper end is used to be electrically connected to the external drive circuit.

[0030] In some embodiments, the upper bracket 11 may also be provided with a fourth electrical connection portion 112, and the fourth electrical connection portion 112 and the first electrical connection portion 111 are provided separately. The lower end of the fourth electrical connection portion 112 is used to electrically connect to the upper end of the second electrical connection portion 121 or the current input terminal of the power circuit, and the upper end is used to electrically connect to an external circuit. The external circuit connected to the upper end of the fourth electrical connection portion 112 includes, but is not limited to, a detection circuit. The way in which the fourth electrical connection portion 112 and the first electrical connection portion 111 are provided separately includes, but is not limited to, providing an insulating portion between the fourth electrical connection portion 112 and the first electrical connection portion 111.

[0031] In some embodiments, the upper bracket 11 may also be provided with at least one fifth electrical connection portion 113, the upper end of which is used for electrical connection with an external circuit, the first electrical connection portion 111, and / or the fourth electrical connection portion 112. The fifth electrical connection portions 113 are provided separately from each other, between the fifth electrical connection portion 113 and the fourth electrical connection portion 112, and between the fifth electrical connection portion 113 and the first electrical connection portion 111. This separation includes, but is not limited to, providing insulating portions between pairs of electrical connection portions.

[0032] In some embodiments, the upper ends of the first electrical connection 111, the fourth electrical connection 112, and / or the fifth electrical connection 113 are exposed on the upper surface of the upper bracket 11; the lower ends of the second electrical connection 121 and / or the third electrical connection 122 are exposed on the lower surface of the lower bracket 12. This exposed design facilitates connection to external circuits and also promotes heat dissipation, especially since the second electrical connection 121 and the third electrical connection 122 are often used to carry large currents, and being exposed on the lower surface of the lower bracket 12 allows for faster heat dissipation.

[0033] In some embodiments, the lower ends of the first electrical connection 111, the fourth electrical connection 112, and / or the fifth electrical connection 113 are exposed on the lower surface of the upper bracket 11; the upper ends of the second electrical connection 121 and / or the third electrical connection 122 are exposed on the upper surface of the lower bracket 12. These exposed designs facilitate electrical connection with power circuits mounted on the upper surface of the lower bracket.

[0034] In some embodiments, the lower end of the second electrical connection 121 is exposed on the lower surface of the lower bracket 12, and the lower end of the second electrical connection 121 is flat. Optionally, the lower end of the second electrical connection 121 has a length of 8-10 mm and a width of 2-4 mm, for example, a length of 8 mm and a width of 2 mm, or a length of 10 mm and a width of 4 mm. In some embodiments, the lower end of the third electrical connection 122 is exposed on the lower surface of the lower bracket 12, and the lower end of the third electrical connection 122 is flat. Optionally, the lower end of the third electrical connection 122 has a length of 8-12 mm and a width of 4-6 mm, for example, a length of 10 mm and a width of 5 mm. Since the second electrical connection 121 and the third electrical connection 122 are often used to carry large currents, the lower ends being exposed on the lower surface of the lower bracket 12, and the lower ends being flat with a slightly larger area, is beneficial for connecting to external circuits and also for heat dissipation. The lower ends of the second electrical connection part 121 and the third electrical connection part 122 can be mounted on the external circuit board by being in close contact with it, and this close contact method also makes heat dissipation easier.

[0035] In some embodiments, the upper end of the second electrical connection portion 121 is exposed on the upper surface of the lower bracket 12, and the upper end of the second electrical connection portion 121 is planar. In some embodiments, the upper end of the third electrical connection portion 122 is exposed on the upper surface of the lower bracket 12, and the upper end of the third electrical connection portion 122 is planar. The planar design facilitates connection with the current input and current output terminals of the power circuit. In some embodiments, the power circuit or the power electronic unit 21 in the power circuit is mounted on the upper end of the third electrical connection portion 122, in close contact with the upper end of the third electrical connection portion 122, to facilitate heat dissipation.

[0036] In some embodiments, at least one of the first electrical connection portion 111, the second electrical connection portion 121, the third electrical connection portion 122, the fourth electrical connection portion 112, and the fifth electrical connection portion 113 is an integrally formed structure, such as a metal column, a metal block, etc. The integral forming method can simplify the structure and facilitate circuit connection on the upper and lower surfaces of the upper bracket 11 and the lower bracket 12.

[0037] In some embodiments, since the fifth electrical connection portion 113 is only used for making circuit connections on the upper surface of the upper bracket 11 and does not need to extend into the interior or lower surface of the upper bracket 11, the fifth electrical connection portion 113 may also be provided only on the upper surface of the upper bracket 11, for example, by plating a copper layer on the upper surface of the upper bracket 11 made of insulating material.

[0038] In some embodiments, the first electrical connection portion 111 and the fourth electrical connection portion 112 may be provided only on the upper or lower surface of the upper bracket 11, and through holes (or grooves) may be provided at corresponding positions on the upper bracket 11. Metal wires or metal parts may be provided in the through holes (or grooves) to connect to the other side of the upper bracket 11. The structures of the second electrical connection portion 121 and the third electrical connection portion 122 may also refer to this design.

[0039] In this embodiment, taking the first electrical connection 111 as an example, the first electrical connection 111 includes an upper end and a lower end, as well as a middle end connecting the two; the upper end is exposed on the upper surface of the upper bracket 11, and the lower end is exposed on the lower surface of the upper bracket 11; the first electrical connection 111 is an integrally formed structure, and the first electrical connection 111 penetrates the upper surface and the lower surface of the upper bracket 11. The first electrical connection 111 can be a metal pillar, metal block, etc. penetrating the upper and lower surfaces of the upper bracket 11. The structures of the second electrical connection 121, the third electrical connection 122, the fourth electrical connection 112, and the fifth electrical connection 113 are the same as the structure of the first electrical connection 111.

[0040] The upper bracket 11 and the lower bracket 12 are used for vertical assembly, and their shapes are not limited. Through holes (or grooves) can be provided on the insulating substrate, and at least one of the following electrical connection portions 111, 121, 122, 112, and 113 can be provided in the through holes (or grooves). Alternatively, the upper bracket 11 can be manufactured by filling the gaps between the first, fourth, and fifth electrical connection portions 111, and the lower bracket 12 can be manufactured by filling the gaps between the second and third electrical connection portions 121 and 122.

[0041] The power circuit is used to implement a preset function. The power circuit includes at least one power electronic unit and may also include other auxiliary electronic devices and auxiliary circuits, such as resistors and control circuits. The power electronic unit 21 includes, but is not limited to, power electronic devices and power chips. Power electronic devices include, but are not limited to, power semiconductor devices, such as MOSFETs, silicon controlled rectifier transistors, insulated-gate bipolar transistors (IGBTs), etc. MOSFETs include, but are not limited to, silicon carbide MOSFETs.

[0042] The power module includes the aforementioned power module bracket and a power circuit. The power circuit is mounted on the upper surface of the lower bracket 12. The upper end of the second electrical connection portion 121 of the power module bracket is electrically connected to the current input terminal of the power circuit, and the lower end is used for electrical connection to an external current input circuit. The upper end of the third electrical connection portion 122 of the power module bracket is electrically connected to the current output terminal of the power circuit, and the lower end is used for electrical connection to an external current output circuit. The lower end of the first electrical connection portion 111 of the power module bracket is electrically connected to the control terminal of the power circuit, and the upper end is used for electrical connection to an external drive circuit.

[0043] In some embodiments, the power module further includes a first electrical connector 31, a second electrical connector 32, and / or a third connector 33. The upper end of the first electrical connector 31 is electrically connected to the lower end of the first electrical connection portion 111, and the lower end of the first electrical connector 31 is electrically connected to the control terminal of the power circuit. The upper end of the second electrical connector 32 is electrically connected to the lower end of the fourth electrical connection portion 112, and the lower end of the second electrical connector 32 is electrically connected to the upper end of the second electrical connection portion 121 or the current input terminal. One end of the third connector 33 is electrically connected to the current input terminal, and the other end is electrically connected to the upper end of the second electrical connection portion 32. In some embodiments, the first electrical connector 31 and the second electrical connector 32 can be copper sheets or copper pillars. The first electrical connector 31 can be disposed on the lower surface of the upper bracket 11, with its upper end fixedly connected to the lower end of the first electrical connection portion 111 and its lower end extending downward to above the control terminal of the power circuit. The second electrical connector 32 can be disposed on the lower surface of the lower bracket 12, with its lower end fixedly connected to the upper end of the second electrical connection portion 121 and its upper end extending upward to the lower end of the fourth electrical connection portion 112. Alternatively, the third connector 33 can also be disposed on the lower surface of the upper bracket 11, with its upper end fixedly connected to the lower end of the fourth electrical connection portion 112 and its lower end extending downward to the upper end of the second electrical connection portion 121. The third connector 33 can be a metal wire.

[0044] In this embodiment, the power circuit includes a power chip, which is a MOSFET chip, integrating a MOSFET. The source S of the MOSFET is the current input terminal of the power circuit, the drain D (not shown in the figure) of the MOSFET is the current output terminal of the power circuit, and the gate G of the MOSFET is the control terminal of the power circuit. The drain D of the MOSFET is disposed on the lower surface of the MOSFET, and the source S and gate G of the MOSFET are disposed on the upper surface of the MOSFET. The MOSFET is mounted on the upper end of the third electrical connection portion 122. The drain D of the MOSFET is connected to the upper end of the third electrical connection portion 122 in close contact. The gate G of the MOSFET is electrically connected to the lower end of the first electrical connection portion 111 through the first electrical connection member 31. The source S of the MOSFET is electrically connected to the upper end of the second electrical connection portion 121 through the third electrical connection member 33. The source S of the MOSFET is also electrically connected to the lower end of the fourth electrical connection portion 112 through the second electrical connection member 32.

[0045] In this embodiment, the upper bracket 11 is provided with three separate fifth electrical connection portions 113. The upper ends of two fifth electrical connection portions 113 located in the middle region of the upper bracket 11 can be used to connect a thermistor NTC and a protection circuit. The upper end of another fifth electrical connection portion 13 can be used to connect an external driving circuit to one end of a gate resistor R, and the other end of the gate resistor R is electrically connected to the upper end of the first electrical connection portion 111. That is, in the power module bracket and power module provided in this embodiment, the external driving circuit can be directly electrically connected to the upper end of the first electrical connection portion 111; or a gate resistor R can be connected between the upper end of one fifth electrical connection portion 13 and the upper end of the first electrical connection portion 111, the external driving circuit can be electrically connected to the upper end of the fifth electrical connection portion 13, and the upper end of the fifth electrical connection portion 13 can then be electrically connected to the upper end of the first electrical connection portion 111 via the gate resistor R. The equivalent circuit after setting the thermistor NTC and gate resistor R can be found in [reference needed]. Figure 2 .

[0046] In some embodiments, electronic components such as resistors may also be connected between the fourth electrical connection portion 112 and the first electrical connection portion 111.

[0047] The power module bracket and power module provided in this embodiment of the utility model have a power circuit whose control terminal is connected to the external circuit through the upper bracket, and the current input terminal and current output terminal are connected to the external circuit through the lower bracket, respectively. This achieves a layered circuit arrangement for the power module, allowing the power module to be powered on both sides and connected to the external circuit. Moreover, the control terminal of the power circuit often carries a small current, while the current input and current output terminals often carry a large current. The small current flows from the top of the power module, and the large current flows from the bottom, achieving a layered arrangement of small and large currents. When such a power module is installed as a whole, such as on an external circuit board, the lower ends of the second and third electrical connection parts on the lower surface of the lower bracket can be in close contact with the external circuit board, which is beneficial for heat dissipation of large currents. In addition, the overall circuit layout is more orderly, and the size of the power module is reduced. By encapsulating the power circuit into a double-layer structure power module, the power module, as an independent electronic device, is easier to install and replace than existing power modules, and the manufacturing method is also simpler. It can be implemented by general engineers without the need for professional personnel for manufacturing and installation.

[0048] Example 2:

[0049] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. A method for manufacturing a power module is provided below, used to manufacture the power module in Embodiment 1. The method for manufacturing the power module may include:

[0050] S101. Make an upper bracket and a lower bracket. The upper bracket is provided with a first electrical connection part, and the lower bracket is provided with a second electrical connection part and a third electrical connection part, and the second electrical connection part and the third electrical connection part are provided separately.

[0051] S102. A power circuit is installed on the upper surface of the lower bracket. The power circuit includes at least one power electronic unit and has a current input terminal, a current output terminal, and a control terminal.

[0052] S103. Assemble the upper bracket and the lower bracket, and electrically connect the upper end of the second electrical connection part to the current input terminal of the power circuit on the upper surface of the lower bracket, the upper end of the third electrical connection part to the current output terminal of the power circuit on the upper surface of the lower bracket, and electrically connect the lower end of the first electrical connection part to the control terminal of the power circuit on the upper surface of the lower bracket.

[0053] In some embodiments, the upper bracket and the lower bracket are provided with a matching assembly structure, and the upper bracket and the lower bracket are assembled to obtain an integral structure.

[0054] In some embodiments, after step S103, step S104 is further included, in which insulating colloid is filled between the upper support and the lower support to enhance the airtightness and provide waterproofing and shockproofing.

[0055] In some embodiments, the upper bracket fabricated in step S101 may also be provided with a fourth electrical connection portion, and the fourth electrical connection portion and the first electrical connection portion are separately provided; step S103 may also include: electrically connecting the lower end of the fourth electrical connection portion to the upper end of the second electrical connection portion or the current input terminal of the power circuit.

[0056] In some embodiments, the upper bracket fabricated in step S101 may also be separately provided with at least one fifth electrical connection portion, and step S103 further includes: electrically connecting the upper end of the fifth electrical connection portion to an external circuit, the first electrical connection portion, and / or the fourth electrical connection portion. The fifth electrical connection portions are separately provided between each other, between the fifth and fourth electrical connection portions, and between the fifth and first electrical connection portions. The method of separate provisioning includes, but is not limited to, providing insulating portions between pairs of electrical connection portions.

[0057] In some embodiments, the upper ends of the first electrical connection, the fourth electrical connection, and / or the fifth electrical connection are exposed on the upper surface of the upper bracket; the lower ends of the second electrical connection and / or the third electrical connection are exposed on the lower surface of the lower bracket.

[0058] In some embodiments, the lower ends of the first electrical connection, the fourth electrical connection, and / or the fifth electrical connection are exposed on the lower surface of the upper bracket; the upper ends of the second electrical connection and / or the third electrical connection are exposed on the upper surface of the lower bracket.

[0059] In some embodiments, the lower end of the second electrical connection is exposed on the lower surface of the lower bracket, and the lower end of the second electrical connection is flat. Optionally, the lower end of the second electrical connection has a length of 8-10 mm and a width of 2-4 mm, for example, a length of 8 mm and a width of 2 mm, or a length of 10 mm and a width of 4 mm. In some embodiments, the lower end of the third electrical connection is exposed on the lower surface of the lower bracket, and the lower end of the third electrical connection is flat. Optionally, the lower end of the third electrical connection has a length of 8-12 mm and a width of 4-6 mm, for example, a length of 10 mm and a width of 5 mm. Since the second and third electrical connections are often used to carry large currents, the lower ends being exposed on the lower surface of the lower bracket, and the lower ends being flat with a slightly larger area, facilitates connection with external circuits and also facilitates heat dissipation. The lower ends of the second and third electrical connections can be mounted to the external circuit board by being close to it, which facilitates heat dissipation.

[0060] In some embodiments, the upper end of the second electrical connection is exposed on the upper surface of the lower bracket, and the upper end of the second electrical connection is planar. In some embodiments, the upper end of the third electrical connection is exposed on the upper surface of the lower bracket, and the upper end of the third electrical connection is planar. The planar design facilitates connection with the current input and current output terminals of the power circuit. In some embodiments, the power circuit or the power electronics unit in the power circuit is mounted on the upper end of the third electrical connection, in close contact with the upper end of the third electrical connection, to facilitate heat dissipation.

[0061] In some embodiments, at least one of the first electrical connection part, the second electrical connection part, the third electrical connection part, the fourth electrical connection part, and the fifth electrical connection part is an integrally formed structure, such as a metal column, a metal block, etc. The integral forming method can simplify the structure and facilitate circuit connection on the upper and lower surfaces of the upper bracket and the lower bracket.

[0062] In some embodiments, since the fifth electrical connection is only used for making circuit connections on the upper surface of the upper bracket and does not need to extend into the interior or lower surface of the upper bracket, the fifth electrical connection may also be provided only on the upper surface of the upper bracket, for example, by plating a copper layer on the upper surface of the upper bracket made of insulating material.

[0063] In some embodiments, the first electrical connection part and the fourth electrical connection part may be provided only on the upper surface or the lower surface of the upper bracket, and through holes (or grooves) may be provided at corresponding positions on the upper bracket. A metal wire or metal piece may be provided in the through hole (or groove) to connect to the other side of the upper bracket. The structure of the second electrical connection part and the third electrical connection part may also refer to this design.

[0064] Step S101 can be made by using an insulating substrate to fabricate the upper or lower support, or by using a metal substrate to fabricate the upper or lower support.

[0065] In some embodiments, step S101 uses an insulating substrate to fabricate the upper or lower bracket. Taking the upper bracket as an example, an insulating substrate is preferred. Secondly, multiple through-holes (or grooves) are formed on the insulating substrate. Finally, by copper plating, a first electrical connection portion, a fourth electrical connection portion, and each fifth electrical connection portion are correspondingly formed in each through-hole (or groove). Each electrical connection portion is an integrally formed structure. Taking the first electrical connection portion as an example, the first electrical connection portion includes an upper end, a lower end, and a middle end connecting the two. The upper end is exposed on the upper surface of the upper bracket, and the lower end is exposed on the lower surface of the upper bracket. The first electrical connection portion penetrates both the upper and lower surfaces of the upper bracket. The first electrical connection portion is a copper pillar, copper block, etc., penetrating both the upper and lower surfaces of the upper bracket. The structures of the fourth and fifth electrical connection portions are similar to the structure of the first electrical connection portion. The lower bracket can also be fabricated in this manner.

[0066] In some embodiments, step S101 uses a metal substrate to fabricate the upper or lower support. Taking the upper support as an example, a metal substrate is preferred. Then, a first electrical connection portion, a fourth electrical connection portion, and each of the fifth electrical connection portions are formed on the metal substrate. Finally, the area between each electrical connection portion is removed and filled with an insulating portion, while retaining each electrical connection portion. The lower support can also be fabricated in this manner.

[0067] The power circuit is used to implement a preset function. The power circuit includes at least one power electronic unit and may also include other auxiliary electronic devices and auxiliary circuits, such as resistors and control circuits. The power electronic unit 21 includes, but is not limited to, power electronic devices and power chips. Power electronic devices include, but are not limited to, power semiconductor devices, such as MOSFETs, silicon controlled rectifier transistors, insulated-gate bipolar transistors (IGBTs), etc. MOSFETs include, but are not limited to, silicon carbide MOSFETs.

[0068] In some embodiments, step S101 or S102 further includes fabricating a first electrical connector, a second electrical connector, and / or a third connector. Step S103 further includes: electrically connecting the upper end of the first electrical connector to the lower end of the first electrical connection portion, and electrically connecting the lower end of the first electrical connector to the control terminal of the power circuit; electrically connecting the upper end of the second electrical connector to the lower end of the fourth electrical connection portion, and electrically connecting the lower end of the second electrical connector to the upper end of the second electrical connection portion or the current input terminal; and electrically connecting one end of the third connector to the current input terminal and the other end to the upper end of the second electrical connection portion.

[0069] In this embodiment, the power circuit includes a power chip, which is a MOSFET chip, integrating a MOSFET. The source S of the MOSFET is the current input terminal of the power circuit, the drain D of the MOSFET is the current output terminal of the power circuit, and the gate G of the MOSFET is the control terminal of the power circuit. The drain D of the MOSFET is disposed on the lower surface of the MOSFET, and the source S and gate G of the MOSFET are disposed on the upper surface of the MOSFET. The MOSFET is mounted on the upper end of the third electrical connection portion 122. The drain D of the MOSFET is connected in close contact with the upper end of the third electrical connection portion. The gate G of the MOSFET is electrically connected to the lower end of the first electrical connection portion through a first electrical connector. The source S of the MOSFET is electrically connected to the upper end of the second electrical connection portion through a third electrical connector. The source S of the MOSFET is also electrically connected to the lower end of the fourth electrical connection portion through a second electrical connector.

[0070] The power module manufacturing method provided by this utility model embodiment involves connecting the control terminal of the power circuit installed in the power module bracket to the external circuit via the upper bracket, and connecting the current input terminal and current output terminal to the external circuit via the lower bracket, thus achieving a layered circuit arrangement for the power module. The power module is double-sided and connected to the external circuit. Furthermore, the control terminal of the power circuit typically carries a small current, while the current input and current output terminals typically carry a large current. The small current flows from the top of the power module, and the large current flows from the bottom, achieving a layered arrangement of small and large currents. When this power module is installed as a single unit, such as on an external circuit board, the lower ends of the second and third electrical connections on the lower surface of the lower bracket can be in close contact with the external circuit board, which is beneficial for heat dissipation of the large current. In addition, the overall circuit arrangement is more orderly, while reducing the size of the power module. By encapsulating the power circuit into a double-layered power module, the power module, as an independent electronic device, is easier to install and replace than existing power modules, and the manufacturing method is simpler, allowing general engineers to implement it without requiring professional personnel for manufacturing and installation.

[0071] The above description, in conjunction with specific implementation methods, provides a further detailed explanation of the embodiments of this utility model. It should not be construed that the specific implementation of this utility model is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this utility model, and all such modifications and substitutions should be considered within the protection scope of this utility model.

Claims

1. A power module bracket, characterized in that, This includes an upper bracket and a lower bracket for assembly, wherein, The upper bracket is provided with a first electrical connection part; The lower support is provided with a second electrical connection part and a third electrical connection part, and the second electrical connection part and the third electrical connection part are separately provided; The upper surface of the lower bracket is used to mount a power circuit, which includes at least one power electronic unit and has a current input terminal, a current output terminal, and a control terminal. The upper end of the second electrical connection part is used to be electrically connected to the current input terminal on the upper surface of the lower bracket, and the lower end is used to be electrically connected to an external current input circuit. The upper end of the third electrical connection part is used to be electrically connected to the current output terminal on the upper surface of the lower bracket, and the lower end is used to be electrically connected to the external current output circuit. The lower end of the first electrical connection part is used to be electrically connected to the control end on the upper surface of the lower bracket, and the upper end is used to be electrically connected to an external drive circuit.

2. The power module bracket as described in claim 1, characterized in that, The upper bracket is further provided with a fourth electrical connection part, and the fourth electrical connection part is separately provided from the first electrical connection part; the lower end of the fourth electrical connection part is used to be electrically connected to the upper end of the second electrical connection part or the current input terminal, and the upper end is used to be electrically connected to an external circuit.

3. The power module bracket as described in claim 2, characterized in that, The upper bracket is also provided with at least one fifth electrical connection part, the upper end of which is used to electrically connect with an external circuit, the first electrical connection part and / or the fourth electrical connection part.

4. The power module bracket as described in claim 3, characterized in that, The upper bracket is provided with three separate fifth electrical connection parts. The upper ends of two of the fifth electrical connection parts are used to connect the thermistor and the protection circuit. The upper end of the other fifth electrical connection part is used to connect the external driving circuit and one end of the gate resistor, and the other end of the gate resistor is electrically connected to the upper end of the first electrical connection part.

5. The power module bracket as described in any one of claims 1 to 4, characterized in that, The upper ends of the first electrical connection, the fourth electrical connection, and / or the fifth electrical connection are exposed on the upper surface of the upper bracket; the lower ends of the second electrical connection and / or the third electrical connection are exposed on the lower surface of the lower bracket.

6. The power module bracket as described in claim 5, characterized in that, The lower end of the second electrical connection is a plane, with a length of 8-10 mm and a width of 2-4 mm; and / or the lower end of the third electrical connection is a plane, with a length of 8-12 mm and a width of 4-6 mm.

7. The power module bracket as described in claim 5, characterized in that, The lower ends of the first electrical connection, the fourth electrical connection, and / or the fifth electrical connection are exposed on the lower surface of the upper bracket; the upper ends of the second electrical connection and / or the third electrical connection are exposed on the upper surface of the lower bracket.

8. The power module bracket as described in claim 7, characterized in that, At least one of the first electrical connection part, the second electrical connection part, the third electrical connection part, the fourth electrical connection part, and the fifth electrical connection part is an integrally formed structure.

9. A power module, characterized in that, The power module bracket as described in any one of claims 1 to 8 further includes a power circuit, wherein, The power circuit is mounted on the upper surface of the lower bracket of the power module bracket. The power circuit includes at least one power electronic unit and has a current input terminal, a current output terminal, and a control terminal. The upper end of the second electrical connection part of the power module bracket is electrically connected to the current input terminal of the power circuit, and the lower end is used to be electrically connected to an external current input circuit. The upper end of the third electrical connection part of the power module bracket is electrically connected to the current output terminal of the power circuit, and the lower end is used to be electrically connected to an external current output circuit. The lower end of the first electrical connection portion of the power module bracket is electrically connected to the control terminal of the power circuit, and the upper end is used for electrical connection to an external drive circuit.

10. The power module as described in claim 9, characterized in that, It also includes a first electrical connector, a second electrical connector, and / or a third connector. The upper end of the first electrical connector is electrically connected to the lower end of the first electrical connection portion, and the lower end of the first electrical connector is electrically connected to the control terminal of the power circuit. The upper end of the second electrical connector is electrically connected to the lower end of the fourth electrical connection portion, and the lower end of the second electrical connector is electrically connected to the upper end of the second electrical connection portion or the current input terminal. One end of the third connector is electrically connected to the current input terminal, and the other end is electrically connected to the upper end of the second electrical connection portion.

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