High-voltage motor driving control panel and high-voltage motor driving control system

Abstract

The utility model relates to a high-voltage motor drive control panel and a high-voltage motor drive control system, the control panel is provided with a high-voltage area, a low-voltage area and an electrical isolation module, the high-voltage area and the low-voltage area are arranged at the two ends of the control panel respectively, and the electrical isolation module is arranged between the high-voltage area and the low-voltage area. The electrical isolation module is arranged between the high-voltage area and the low-voltage area and electrically isolates the high-voltage area from the low-voltage area. Each functional module area on the control panel is clearly divided, and the high-voltage module and the low-voltage module are not overlapped or crossed, so that the signal interference of the high-voltage area on the low-voltage area is effectively prevented, and the reliability and the anti-interference capability of the high-voltage motor drive control system are improved. Besides, as the circuits of the high-voltage region and the low-voltage region can be completely isolated only by one electrical isolation channel, the usable area of the control panel is greatly saved, and the compact and miniaturized design of the high-voltage motor driving control panel is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of PCB board technology, and in particular to a high-voltage motor drive control board and a high-voltage motor drive control system having high-voltage circuit and low-voltage circuit. Background Technology

[0002] With the rapid development of modern automotive technology, various automotive components are constantly evolving towards higher power and smaller size. As one of the core technologies of automobiles, motor drive control technology currently typically adopts a high-voltage electrical architecture. However, the industry places stricter demands on the product size, hardware architecture complexity, and cost of motor drive controllers. This presents greater challenges to interference between high-voltage and low-voltage modules and to the miniaturization design of the control board.

[0003] In related technologies, the layout and unclear separation of high-voltage and low-voltage modules on high-voltage motor drive control boards lead to overlap and intersection between them, resulting in insufficient safety distance and poor EMI immunity. However, sufficient safety distance must be maintained between the power and signal traces of the high-voltage module and the signals of the low-voltage module. To ensure this necessary safety distance, existing high-voltage motor drive control boards require more than two safety gaps between the high-voltage and low-voltage modules. This necessitates a larger design for the high-voltage motor drive control board, hindering miniaturization and compact design. Utility Model Content

[0004] To overcome the problems existing in related technologies, this disclosure provides a high-voltage motor drive control board and a high-voltage motor drive control system. Through reasonable layout and electrical isolation, the reliability and anti-interference ability of the high-voltage motor drive control system are improved, while achieving compactness and miniaturization.

[0005] According to a first aspect of the present disclosure, a high-voltage motor drive control board is provided. The control board is configured with a high-voltage region, a low-voltage region, and an electrical isolation module. The high-voltage region and the low-voltage region are respectively arranged at both ends of the control board. The electrical isolation module is arranged between the high-voltage region and the low-voltage region and provides electrical isolation between the high-voltage region and the low-voltage region.

[0006] In some embodiments, the high-voltage region includes a high-voltage power supply filter circuit module and a high-voltage drive circuit module connected in series; the low-voltage region includes a low-voltage control circuit module, wherein the electrical isolation module is arranged between the high-voltage drive circuit module and the low-voltage control circuit module, the high-voltage drive circuit module is connected to the high-voltage terminal of the electrical isolation module, and the low-voltage control circuit module is connected to the low-voltage terminal of the electrical isolation module.

[0007] In some embodiments, the circuit includes: a first circuit board configured with the high-voltage drive circuit module and the electrical isolation module, respectively located at both ends of the first circuit board; a second circuit board configured with the high-voltage power supply filter circuit module; and a third circuit board configured with the low-voltage control circuit module.

[0008] In some embodiments, the third circuit board is disposed at one end of the first circuit board having the electrical isolation module, and is electrically connected to the first circuit board via a flexible connecting plate, so that the third circuit board can be bent relative to the first circuit board.

[0009] In some embodiments, the second circuit board is stacked parallel to and spaced apart from the side of the first circuit board in a direction perpendicular to the side of the first circuit board, and the second circuit board and the first circuit board are connected by a connector.

[0010] In some embodiments, the electrical isolation module includes a capacitor transformer and a plurality of chips, each of the chips and the capacitor transformer being provided with a high-voltage terminal and a low-voltage terminal.

[0011] In some embodiments, the high-voltage drive circuit module includes high and low voltage side circuits of a three-phase inverter (U, V, W), an IGBT module, a discharge circuit, and a high-voltage control module.

[0012] In some embodiments, the high-voltage power supply filtering circuit module includes a high-voltage filtering circuit and an EMI anti-interference circuit.

[0013] In some embodiments, the low-voltage control circuit module includes a main control circuit, a communication circuit, and a motor position sensor circuit.

[0014] According to a second aspect of the present disclosure, a high-voltage motor drive control system is provided, including a control board for a high-voltage motor drive control system as described in the first aspect.

[0015] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: the functional module areas on the control board are clearly divided, and there is no overlap or intersection between the high-voltage module and the low-voltage module, effectively preventing signal interference from the high-voltage area to the low-voltage area, and improving the reliability and anti-interference capability of the high-voltage motor drive control system. In addition, since only one electrical isolation channel is needed to completely isolate the circuits of the high-voltage area and the low-voltage area, the area used by the control board is greatly saved, which is conducive to the compact and miniaturized design of the high-voltage motor drive control board. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0017] Figure 1 This is a framework diagram of a high-voltage motor drive control system according to an exemplary embodiment;

[0018] Figure 2 This is a perspective structural diagram of a high-voltage motor drive control board according to an exemplary embodiment;

[0019] Figure 3 This is a perspective view of a high-voltage motor drive control board according to an exemplary embodiment.

[0020] Figure 4 yes Figure 2 and Figure 3 A schematic diagram of the connection between the first and third circuit boards in the diagram on a plane;

[0021] Figure 5 yes Figure 2 and Figure 3 A schematic diagram of the structure of the second circuit board. Detailed Implementation

[0022] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0023] To solve the above-mentioned technical problems, this disclosure provides a high-voltage motor drive control board 100, such as... Figure 1 As shown, the high-voltage motor drive control board 100 is equipped with a high-voltage region 10, a low-voltage region 20, and an electrical isolation module 30. The high-voltage region 10 and the low-voltage region 20 are respectively arranged at both ends of the high-voltage motor drive control board 100, and the electrical isolation module 30 is arranged between the high-voltage region 10 and the low-voltage region 20 to provide electrical isolation between the high-voltage region 10 and the low-voltage region 20.

[0024] In one specific embodiment, reference Figure 1 As shown, along the lateral direction of the high-voltage motor drive control board 100 (i.e. Figure 1 (As shown in the left-right direction), the high-voltage region 10 is located at the left end of the high-voltage motor drive control board 100, the low-voltage region 20 is located at the right end of the high-voltage motor drive control board 100, and the electrical isolation module 30 is located along the longitudinal direction of the high-voltage motor drive control board 100 (i.e., in the left-right direction). Figure 1 Extending in the vertical direction (as shown), it is isolated between the high-voltage region 10 and the low-voltage region 20, so as to isolate the high-voltage region 10 and the low-voltage region 20 at the left and right ends of the high-voltage motor drive control board 100.

[0025] Therefore, the high-voltage motor drive control board 100 disclosed herein, through a reasonable layout, distributes the high-voltage area 10 and the low-voltage area 20 at both ends of the high-voltage motor drive control board 100. The circuits of the high-voltage area 10 and the low-voltage area 20 can be completely isolated by only one electrical isolation module 30 in the middle, making the partitioning of the high-voltage area 10 and the low-voltage area 20 clearer and more reasonable. It can effectively prevent the high-voltage area 10 from interfering with the signal of the low-voltage area 20. Not only is the structure simple, but the reliability and anti-interference ability of the system are also improved. At the same time, the high-voltage motor drive control board 100 is compact and miniaturized.

[0026] It is further understood that the terms "longitudinal," "lateral," "vertical," "left," and "right," etc., mentioned above and below, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment 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. For example, in some other embodiments, the high-voltage region 10 and the low-voltage region 20 may be arranged longitudinally at the upper and lower ends of the high-voltage motor control board 100.

[0027] Figure 1 The high-voltage motor drive control board 100 shown adopts a square design. However, in other embodiments, the high-voltage motor drive control board 100 can be flexibly designed into any shape to adapt to different installation environments, depending on specific space requirements. The electrical isolation module 30 can be arranged vertically between the high-voltage area 10 and the low-voltage area 20, or it can be set at an angle, as long as there is no intersection or overlap between the high-voltage area 10 and the low-voltage area 20. This flexible layout not only improves space utilization but also ensures effective isolation between the high-voltage area 10 and the low-voltage area 20.

[0028] Furthermore, such as Figure 1 As shown, the high-voltage region 10 includes a high-voltage power supply filter circuit module 12 and a high-voltage drive circuit module 11 connected in series, and both the high-voltage power supply filter circuit module 12 and the high-voltage drive circuit module 11 are located at the left end of the high-voltage motor drive control board 100. The low-voltage region 20 includes a low-voltage control circuit module 21, which is located at the right end of the high-voltage motor drive control board 100.

[0029] An electrical isolation module 30 is positioned between the high-voltage drive circuit module 11 and the low-voltage control circuit module 21. Specifically, as shown... Figure 4As shown, the electrical isolation module 30 includes a capacitor transformer 31 and multiple chips 32. The multiple chips 32 and capacitor transformer 31 are arranged along the longitudinal direction of the high-voltage motor drive control board 100. Each chip 32 and capacitor transformer 31 is provided with a high-voltage terminal and a low-voltage terminal. The high-voltage terminal of each chip 32 and capacitor transformer 31 is arranged at the left end of the electrical isolation module 30 for connection with the high-voltage drive circuit module 11, and the low-voltage terminal of each chip 32 and capacitor transformer 31 is arranged at the right end of the electrical isolation module 30 for connection with the low-voltage control circuit module 21.

[0030] The electrical isolation module 30, composed of multiple chips 32 and capacitor transformers 31, forms an isolation drive circuit, a digital isolation circuit, and a power isolation circuit, which are used to provide complete electrical isolation between the high-voltage drive circuit module 11 and the low-voltage control circuit module 21.

[0031] Furthermore, the high-voltage power supply filtering circuit module 12 includes an EMI anti-interference circuit and a high-voltage filtering circuit, which are used to filter the input high-voltage power supply and reduce electromagnetic interference (EMI) and voltage fluctuations.

[0032] Specifically, such as Figure 1 As shown, the high-voltage power supply filter circuit module 12 may include an X-capacitor, a Y-capacitor, a common-mode inductor, and a film capacitor, which together form an EMI suppression circuit and a high-voltage filter circuit. The X-capacitor and Y-capacitor are used to filter out high-frequency noise. The X-capacitor is connected across the power lines to absorb differential-mode noise, while the Y-capacitor is connected between the power line and ground to absorb common-mode noise. The common-mode inductor is used to suppress common-mode noise. The film capacitor is used to absorb high-frequency noise, ensuring a smoother output voltage.

[0033] The high-voltage power supply is connected to the high-voltage input port of the high-voltage power supply filter circuit. After being filtered by X capacitor, Y capacitor, common mode inductor and film capacitor, it supplies power to the high-voltage drive circuit module 11. The high-voltage power supply filter circuit module 12 can effectively discharge interference signals to the outside of the high-voltage drive circuit module 11 (or the first circuit board described below), thereby enhancing the anti-interference capability of the high-voltage motor drive control system.

[0034] Furthermore, the high-voltage drive circuit module 11 is responsible for receiving and processing the high-voltage signal to drive the motor. For example... Figure 1As shown, the high-voltage drive circuit module 11 may include the high and low voltage side circuits of the U, V, and W three-phase inverter, the IGBT module, the discharge circuit, and the high-voltage control module.

[0035] The U, V, and W three-phase inverter high and low voltage side circuits are used to realize the three-phase drive of the motor. The IGBT module is used for switching operations and controlling the current flow. The discharge circuit promptly releases charge, allowing the circuit to quickly return to its initial stable state after power failure, ensuring stable operation when power is restored next time and protecting devices from damage caused by the instantaneous current generated by sudden discharge pulses. The high-voltage control module manages and controls the entire high-voltage drive process.

[0036] Furthermore, the low-voltage control circuit module 21 is used to execute low-voltage control logic such as signal processing, communication, and protection functions. Specifically, the low-voltage control circuit module 21 may include at least a main control circuit, a communication circuit, and a motor position sensor circuit. The main control circuit can be an MCU (Microcontroller Unit) circuit, responsible for the overall control logic. The communication circuit is used to communicate with external devices. The motor position sensor circuit is used to monitor the motor position to achieve precise position control.

[0037] In some embodiments, such as Figures 2 to 4 As shown, the high-voltage motor drive control board 100 includes a first circuit board 101, a second circuit board 102, and a third circuit board 103.

[0038] The high-voltage drive circuit module 11 and the electrical isolation module 30 are disposed on the first circuit board 101, and the high-voltage drive circuit module 11 and the electrical isolation module 30 are respectively located at both ends of the first circuit board 101, such as... Figure 4 As shown, the high-voltage drive circuit module 11 is located at the left end of the first circuit board 101, and the electrical isolation module 30 is located at the right end of the first circuit board 101. The second circuit board 102 is equipped with a high-voltage power supply filter circuit module 12. The third circuit board 103 is equipped with a low-voltage control circuit module 21.

[0039] The high-voltage motor drive control board 100 is divided into three circuit boards, each of which can be manufactured independently, reducing production difficulty and cost, and improving manufacturing efficiency and quality.

[0040] Each circuit board can be tested independently, ensuring that each component meets standards before integration, reducing overall debugging time and complexity. If a module malfunctions, the circuit board containing that module can be replaced or repaired individually, without having to replace the entire control board, reducing maintenance costs and time.

[0041] Furthermore, such as Figure 4As shown, a third circuit board 103, equipped with a low-voltage control circuit module 21, is arranged at one end of the first circuit board 101 that has an electrical isolation module 30. That is, the low-voltage control circuit module 21 located on the third circuit board 103 is connected to the low-voltage end of the electrical isolation module 30 on the first circuit board 101. At the same time, the third circuit board 103 is electrically connected to the first circuit board 101 through a flexible connecting plate 104, so that the third circuit board 103 can be bent relative to the first circuit board 101.

[0042] The first circuit board 101 and the third circuit board 103 are connected by a flexible connecting plate 104. This allows communication signals, drive control signals, power supply, and ground lines between the low-voltage control circuit module 21 and the high-voltage drive circuit module 11 to be connected via the flexible board, eliminating the need for any connectors. This reduces the use of connectors, strengthens the overall vibration resistance of the high-voltage motor drive control board 100, improves its reliability, and reduces costs. Furthermore, the flexible connecting plate 104 allows the third circuit board 103 to be bent relative to the first circuit board 101, giving the high-voltage motor drive control board 100 the advantages of bendability and flexible assembly. This significantly reduces the planar space of the entire high-voltage motor drive control board 100, further enhancing its miniaturization and compactness.

[0043] In some embodiments, such as Figure 2 As shown, along a direction perpendicular to the side of the first circuit board 101, the second circuit board 102 is stacked parallel to and spaced apart from the side of the first circuit board 101, and the second circuit board 102 and the first circuit board 101 are connected by connector 105. This vertical overlap of the first circuit board 101 and the second circuit board 102 further saves planar space and further partitions the high-voltage area 10; that is, the high-voltage drive circuit module 11 is located on the first circuit board 101, and the high-voltage power supply filter circuit module 12 is located on the second circuit board 102, which is more suitable for the trend of miniaturization. Figures 3 to 5 As shown, the first circuit board 101 and the second circuit board 102 are connected by a connector 105.

[0044] Based on the same inventive concept, this disclosure provides a high-voltage motor drive control system, including the aforementioned high-voltage motor drive control board 100. The specific methods by which the functions of the high-voltage motor drive control system in the above embodiments are implemented have been described in detail in the embodiments relating to the high-voltage motor drive control board 100, and will not be elaborated upon here.

[0045] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0046] It is further understood that the terms "first," "second," etc., are used to describe various structures, but these structures should not be limited to these terms. These terms are only used to distinguish structures of the same type from one another and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, a first structure can also be called a second structure, and similarly, a second structure can also be called a first structure.

[0047] It can be further understood that, unless otherwise specified, "connection" includes both direct connections where no other components exist between the two parties and indirect connections where other components exist between them.

[0048] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0049] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0050] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A high voltage motor drive control board (100) characterized by, The control board is provided with a high-voltage area (10), a low-voltage area (20) and an electrical isolation module (30), The high-voltage area (10) and the low-voltage area (20) are arranged at two ends of the control board (100) respectively, and the electrical isolation module (30) is arranged between the high-voltage area (10) and the low-voltage area (20) and electrically isolates the high-voltage area (10) and the low-voltage area (20).

2. The high voltage motor drive control board (100) of claim 1, wherein, The high-voltage area (10) includes a high-voltage power supply filtering circuit module (12) and a high-voltage drive circuit module (11) in series; the low-voltage area (20) includes a low-voltage control circuit module (21), The electrical isolation module (30) is arranged between the high-voltage drive circuit module (11) and the low-voltage control circuit module (21), the high-voltage drive circuit module (11) is connected with a high-voltage end of the electrical isolation module (30), and the low-voltage control circuit module (21) is connected with a low-voltage end of the electrical isolation module (30).

3. The high voltage motor drive control board (100) of claim 2, wherein, It comprises: A first circuit board (101) provided with the high-voltage drive circuit module (11) and the electrical isolation module (30) and located at two ends of the first circuit board (101) respectively; A second circuit board (102) provided with the high-voltage power supply filtering circuit module (12); and A third circuit board (103) provided with the low-voltage control circuit module (21).

4. The high voltage motor drive control board (100) of claim 3, wherein, The third circuit board (103) is arranged at one end of the first circuit board (101) with the electrical isolation module (30) and is electrically connected with the first circuit board (101) through a flexible connecting plate (104), so that the third circuit board (103) can be bent relative to the first circuit board (101).

5. The high voltage motor drive control board (100) of claim 3, wherein, In a direction perpendicular to the side surface of the first circuit board (101), the second circuit board (102) is parallel and spaced apart and stacked on the side surface of the first circuit board (101), and the second circuit board (102) and the first circuit board (101) are connected through a connector (105).

6. The high voltage motor drive control board (100) of claim 2, wherein, The electrical isolation module (30) includes a capacitor transformer and a plurality of chips, each of which is provided with a high-voltage end and a low-voltage end.

7. The high voltage motor drive control board (100) of claim 2, wherein, The high-voltage drive circuit module (11) includes a U, V, W three-phase inverter high-low voltage side circuit, an IGBT module, a discharge circuit and a high-voltage control module.

8. The high voltage motor drive control board (100) of claim 2, wherein, The high-voltage power supply filtering circuit module (12) includes a high-voltage filtering circuit and an EMI anti-interference circuit.

9. The high voltage motor drive control board (100) of claim 2, wherein, The low-voltage control circuit module (21) includes a master control circuit, a communication circuit and a motor position sensor circuit.

10. A high voltage motor drive control system characterized by, It comprises the high-voltage motor drive control board (100) according to any one of claims 1 to 9. It comprises the high-voltage motor drive control board (100) according to any one of claims 1 to 9.

Images