A drive circuit layout structure and a circuit board thereof

Abstract

The utility model discloses a kind of driving circuit layout structure and its circuit board, including substrate, electrically connected end and driving module, substrate is provided with circuit conductive layer, electrically connected end is used to be connected with load, electrically connected end is set on substrate, driving module includes multiple semiconductor switch tube parts, multiple switch tube parts are set to substrate and multiple switch tube parts are arranged around electrically connected end, switch tube part is electrically connected with electrically connected end by circuit conductive layer, the design structure is more concise, signal interference between each other is not easy to occur, can make the load operation more stable and reliable connected with electrically connected end.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and in particular to a drive circuit layout structure and its circuit board. Background Technology

[0002] Existing driver circuit boards have driver modules consisting of multiple semiconductor switching devices arranged on the circuit board. The circuit board also has electrical connection terminals for connecting to the load. Typically, the electrical connection terminals are placed at the edge of the circuit board, while the switching devices are concentrated on one side of the electrical connection terminals so that heat sinks on the driver circuit board can dissipate heat from each switching device. The electrical connection terminals need to be connected to each switching device through the wiring layer, which makes the wiring layer relatively dense and complex, and prone to signal interference, resulting in unstable load operation. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a drive circuit layout structure and its circuit board, which has a simple structure and provides stable and reliable drive performance.

[0004] A drive circuit layout structure according to a first aspect embodiment of the present invention includes: a substrate having a conductive layer; an electrical connection terminal for connecting to a load, the electrical connection terminal being disposed on the substrate; and a drive module including a plurality of semiconductor switching devices, the plurality of switching devices being disposed on the substrate and arranged around the electrical connection terminal, the switching devices being electrically connected to the electrical connection terminal through the conductive layer.

[0005] According to a drive circuit layout structure according to an embodiment of the present utility model, at least the following beneficial effects are achieved:

[0006] The drive circuit layout structure of this utility model arranges multiple switching components of the drive module around the electrical connection terminal, thereby minimizing the length of the conductive layer of the wiring used for electrical connection between each switching component and the electrical connection terminal. This results in a simpler structure, reduces the likelihood of mutual signal interference, and makes the load connected to the electrical connection terminal operate more stably and reliably.

[0007] According to some embodiments of the present invention, the conductive layer of the circuit is at least partially exposed on the substrate, and the switching device is in thermal contact with the conductive layer of the circuit.

[0008] According to some embodiments of the present invention, a plurality of the switch components are arranged in at least two columns of drive components, wherein one column of drive components is located on one side of the electrical connection terminal and the other column of drive components is located on the other side of the electrical connection terminal.

[0009] According to some embodiments of the present invention, the electrical connection terminal includes three connection terminals, which are used to connect to the three-phase input terminal of the load. There are six switching components, and each connection terminal is connected to two switching components accordingly.

[0010] According to some embodiments of the present invention, the two switch components connected to the connecting terminal are respectively located on both sides of the connecting terminal.

[0011] According to some embodiments of this utility model, the plurality of switching components include a first switching transistor Q701, a second switching transistor Q702, a third switching transistor Q703, a fourth switching transistor Q704, a fifth switching transistor Q705, and a sixth switching transistor Q706. The three connection terminals include a U-phase terminal, a V-phase terminal, and a W-phase terminal. The output terminal of the first switching transistor Q701 is connected to the U-phase terminal and the input terminal of the fourth switching transistor Q704, respectively. The output terminal of the second switching transistor Q702 is connected to the V-phase terminal and the input terminal of the fifth switching transistor Q705, respectively. The output terminal of the third switching transistor Q703 is connected to the W-phase terminal and the input terminal of the sixth switching transistor Q706, respectively. The input terminals of the first switching transistor Q701, the second switching transistor Q702, and the third switching transistor Q703 are all used to connect to a power supply. The output terminals of the fourth switching transistor Q704, the fifth switching transistor Q705, and the sixth switching transistor Q706 are all grounded.

[0012] According to some embodiments of the present invention, the first switch Q701, the second switch Q702 and the third switch Q703 are located on one side of the electrical connection terminal, and the fourth switch Q704, the fifth switch Q705 and the sixth switch Q706 are located on the other side of the electrical connection terminal.

[0013] According to some embodiments of this utility model, the switching device includes a transistor, a MOSFET, an IGBT, or a thyristor.

[0014] The circuit board according to the second aspect of the present invention includes the drive circuit layout structure disclosed in any of the above embodiments.

[0015] The circuit board according to the embodiments of this utility model has at least the following beneficial effects:

[0016] The circuit board of this utility model adopts the drive circuit layout structure disclosed in any of the above embodiments. The structure is simpler and less prone to mutual signal interference, which can make the load connected to the electrical connection terminal operate more stably and reliably.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a top view of one embodiment of the circuit board of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of one embodiment of the circuit board of this utility model;

[0021] Figure 3 This is a circuit diagram of one embodiment of the circuit board of this utility model.

[0022] Figure label:

[0023] Substrate 100; conductive layer 110; electrical connection terminal 200; U-phase terminal 210; V-phase terminal 220; W-phase terminal 230; drive module 300; drive assembly 310; switch fitting 320. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figures 1 to 3 As shown, a drive circuit layout structure according to a first aspect embodiment of the present invention includes a substrate 100, an electrical connection terminal 200, and a drive module 300. The substrate 100 is provided with a conductive layer 110. The electrical connection terminal 200 is used to connect to a load and is disposed on the substrate 100. The drive module 300 includes a plurality of semiconductor switching devices 320. The plurality of switching devices 320 are disposed on the substrate 100 and arranged around the electrical connection terminal 200. The switching devices 320 are electrically connected to the electrical connection terminal 200 through the conductive layer 110.

[0029] The substrate 100 can be a conventional aluminum plate, ceramic plate, or other material used to form a circuit board. A conductive layer 110 can be formed on the substrate 100 using copper, tin, or other materials. The electrical connection terminal 200 can be attached to the circuit board with adhesive. The electrical connection terminal 200 can be provided with connection terminals, which are connected to the conductive layer 110 via pins. The switch device 320 also has pins, and the switch device 320 can be electrically connected to the electrical connection terminal 200 via the conductive layer 110 by connecting the pins to the conductive layer 110.

[0030] The electrical connection terminal 200 can be in the form of a plug. The load can be connected to the electrical connection terminal 200 through a wire and a plug provided at one end of the wire. Specifically, the load can be a three-phase brushless motor, an electromagnetic coil, etc.

[0031] In some embodiments of this utility model, the switching device 320 includes a transistor, a MOSFET, an IGBT, or a thyristor.

[0032] In this utility model, the drive circuit layout structure has multiple switch tubes 320 of the drive module 300 arranged around the electrical connection terminal 200, thereby making the line length of the conductive layer 110 used for electrical connection between each switch tube 320 and the electrical connection terminal 200 as short as possible. The structure is simpler and less prone to mutual signal interference, which can make the load connected to the electrical connection terminal 200 operate more stably and reliably.

[0033] In some embodiments of this utility model, such as Figure 2 As shown, the conductive layer 110 is at least partially exposed on the substrate 100, and the switch 320 is in thermal contact with the conductive layer 110.

[0034] The conductive layer 110 is made of thermally and electrically conductive metal or alloy material. Part of the conductive layer 110 is embedded in the substrate 100, while part of it is exposed on the surface of the substrate 100. The exposed part of the conductive layer 110 can be connected to the switch device 320 or the electrical connection terminal 200, or it can be in contact with the outside air. Since the switch device 320 is in contact with the conductive layer 110, heat can be transferred to the conductive layer 110. Air flows over the surface of the conductive layer 110, thereby dissipating heat from the conductive layer 110.

[0035] In some embodiments of this utility model, such as Figure 1 As shown, multiple switch components 320 are arranged in at least two columns of drive components 310, with one column of drive components 310 located on one side of the electrical connection terminal 200 and the other column of drive components 310 located on the other side of the electrical connection terminal 200, thus forming a relatively neat layout, which makes it easy for users to identify each switch component 320 for maintenance and replacement, and is also easy to install.

[0036] In some embodiments of this utility model, multiple switching components 320 can also be evenly distributed in a ring around the electrical connection terminal 200, thereby providing sufficient space to arrange the conductive layer 110 of the circuit.

[0037] In some embodiments of this utility model, the electrical connection terminal 200 includes three connection terminals for connecting to the three-phase input terminal of the load, and there are six switching tubes 320, with each connection terminal correspondingly connected to two switching tubes 320.

[0038] The electrical connector 200 is used to connect to the three-phase brushless motor. The three connection terminals can be connected to the U, V, and W terminals of the three-phase brushless motor respectively. Every two switching components 320 are connected to the U, V, or W terminals of the three-phase brushless motor respectively through the connection terminals, so that the drive module 300 drives the three-phase brushless motor.

[0039] In some embodiments of this utility model, the two switch tubes 320 connected to the connecting terminal are respectively located on both sides of the connecting terminal, forming a relatively neat layout. One connecting terminal is connected to two switch tubes 320 in a one-to-one correspondence, which makes it easy for users to identify each switch tube 320 for maintenance and replacement, and is also easy to install.

[0040] Specifically, such as Figure 3As shown, the plurality of switching components 320 include a first switching transistor Q701, a second switching transistor Q702, a third switching transistor Q703, a fourth switching transistor Q704, a fifth switching transistor Q705, and a sixth switching transistor Q706. The three connection terminals include a U-phase terminal 210, a V-phase terminal 220, and a W-phase terminal 230. The output terminal of the first switching transistor Q701 is connected to the U-phase terminal 210 and the input terminal of the fourth switching transistor Q704, respectively. The output terminal of the second switching transistor Q702 is connected to the V-phase terminal 230, respectively. Terminal 220 is connected to the input terminal of the fifth switch Q705. The output terminal of the third switch Q703 is connected to the W-phase terminal 230 and the input terminal of the sixth switch Q706. The input terminals of the first switch Q701, the second switch Q702, and the third switch Q703 are all connected to the power supply. The output terminals of the fourth switch Q704, the fifth switch Q705, and the sixth switch Q706 are all grounded.

[0041] In some embodiments of this utility model, since the input terminals of the first switch Q701, the second switch Q702, and the third switch Q703 are all used to connect to the power supply, the first switch Q701, the second switch Q702, and the third switch Q703 are located on one side of the electrical connection terminal 200 to form a row of drive components 310, which facilitates connection to the power supply through the conductive layer 110, shortens the line length, and provides a clear layout.

[0042] Similarly, since the output terminals of the fourth switch Q704, the fifth switch Q705, and the sixth switch Q706 are all grounded, the fourth switch Q704, the fifth switch Q705, and the sixth switch Q706 are located on the other side of the electrical connection terminal 200 to form another row of drive components 310, which facilitates grounding through the conductive layer 110, shortens the line length, and makes the layout clear.

[0043] The circuit board according to the second aspect of the present invention includes the drive circuit layout structure disclosed in any of the above embodiments.

[0044] Understandably, circuit boards can be used to drive different loads, and other electronic circuit components can be flexibly arranged on the circuit boards.

[0045] The circuit board of this utility model adopts the drive circuit layout structure disclosed in any of the above embodiments. The structure is simpler and less prone to mutual signal interference, which makes the load connected to the electrical connection terminal 200 operate more stably and reliably.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A drive circuit layout structure, characterized in that, include: The substrate has a conductive layer for circuitry. An electrical connection terminal for connecting to a load is disposed on the substrate; The driving module includes a plurality of semiconductor switching devices, the plurality of switching devices being disposed on the substrate and arranged around the electrical connection terminal, the switching devices being electrically connected to the electrical connection terminal through the conductive layer.

2. The drive circuit layout structure according to claim 1, characterized in that: The conductive layer of the circuit is at least partially exposed on the substrate, and the switching device is in thermal contact with the conductive layer of the circuit.

3. The drive circuit layout structure according to claim 1, characterized in that: The plurality of the switching components are arranged in at least two columns of drive components, one column of drive components being located on one side of the electrical connection terminal and the other column of drive components being located on the other side of the electrical connection terminal.

4. The drive circuit layout structure according to claim 1, characterized in that: The electrical connection terminal includes three connection terminals for connecting to the three-phase input terminal of the load. There are six switching components, and each connection terminal is connected to two switching components respectively.

5. The drive circuit layout structure according to claim 4, characterized in that: The two switch components connected to the connection terminal are located on both sides of the connection terminal.

6. The drive circuit layout structure according to claim 4, characterized in that: The plurality of switching devices include a first switching transistor Q701, a second switching transistor Q702, a third switching transistor Q703, a fourth switching transistor Q704, a fifth switching transistor Q705, and a sixth switching transistor Q706. The three connection terminals include a U-phase terminal, a V-phase terminal, and a W-phase terminal. The output terminal of the first switching transistor Q701 is connected to the U-phase terminal and the input terminal of the fourth switching transistor Q704. The output terminal of the second switching transistor Q702 is connected to the V-phase terminal and the input terminal of the fifth switching transistor Q705. The output terminal of the third switching transistor Q703 is connected to the W-phase terminal and the input terminal of the sixth switching transistor Q706. The input terminals of the first switching transistor Q701, the second switching transistor Q702, and the third switching transistor Q703 are all used to connect to a power supply. The output terminals of the fourth switching transistor Q704, the fifth switching transistor Q705, and the sixth switching transistor Q706 are all grounded.

7. The drive circuit layout structure according to claim 6, characterized in that: The first switch Q701, the second switch Q702 and the third switch Q703 are located on one side of the electrical connection terminal, and the fourth switch Q704, the fifth switch Q705 and the sixth switch Q706 are located on the other side of the electrical connection terminal.

8. The drive circuit layout structure according to claim 1, characterized in that: The switching device includes a transistor, a MOSFET, an IGBT, or a thyristor.

9. A circuit board, characterized in that, Includes the drive circuit layout structure as described in any one of claims 1 to 8.

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