Motor control device

Abstract

A motor control device according to an embodiment of the present disclosure includes: a substrate including a low-voltage region, a high-voltage region spaced apart from the low-voltage region, and an insulating region disposed between the low-voltage region and the high-voltage region; and a capacitor module disposed in the high-voltage region, in which the high-voltage region includes connection terminals, pin arrangements and functions of the connection terminals are defined by a single pin diagram, and the capacitor module has pins formed at positions corresponding to the connection terminals.

Description

Technical Field

[0001] The present disclosure relates to a motor control device. Background Art

[0002] Electric vehicles (xEV) are broadly classified into hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHEV) and battery electric vehicles (BEV). Most HEVs or PHEVs must be designed with an inverter with a maximum voltage of 600V, while BEVs must be designed with an inverter with a maximum voltage of 1200V.

[0003] Specifically, in order to drive a drive motor in an electric vehicle, a battery (high voltage battery) is provided to supply power required for the drive motor by repeating charge and discharge while the vehicle is running, and an inverter is provided to rotate the drive motor using the power of the battery.

[0004] The inverter is a power conversion device that drives the motor and charges the battery. It converts the power of the battery to drive the motor for auxiliary power, and performs the function of power conversion to charge the battery during regenerative braking.

[0005] Since the high voltage motor drive voltage (100V or more) and the low voltage (12V) control power supply are input to the inverter in parallel, an isolation distance must be formed to insulate the high voltage from the low voltage. In addition, parts suitable for the voltage must be used, and the size of the parts increases as the voltage increases.

[0006] Since the high voltage (100V or more) motor drive voltage and the low voltage (12V) control power supply are input to the inverter in parallel, an isolation distance must be formed to insulate the high voltage from the low voltage. In addition, there is a problem that an expensive and complex isolated DC / DC converter is required to transmit the control signal generated from the low voltage power supply to the high voltage area, and a digital isolator is required to perform isolated signal transmission. Summary of the invention

[0007] Technical issues

[0008] The technical problem to be solved by the present disclosure is to provide a motor control device compatible with different voltages.

[0009] In addition, a technical problem to be solved by the present disclosure is to provide a motor control device that uses a single input power source as a power source for driving and controlling a motor.

[0010] Technical Solution

[0011] In order to solve the above technical problems, a motor control device according to an embodiment of the present disclosure includes: a substrate, including a low voltage area, a high voltage area separated from the low voltage area, and an insulating area arranged between the low voltage area and the high voltage area; and a capacitor module, arranged in the high voltage area, wherein the high voltage area includes a connecting terminal configured by a single pin map, and the capacitor module has pins formed at positions corresponding to the connecting terminals.

[0012] The capacitor module includes a substrate, components disposed on one surface of the substrate, and pins disposed on another surface of the substrate, and at least a portion of the size and type of at least a portion of the components may vary according to the size of an input voltage.

[0013] Components disposed on one surface of the capacitor module include a Y capacitor, a filter, and a DC capacitor, and at least a portion of a size and a type of the DC capacitor may vary according to a size of an input voltage.

[0014] The motor control device includes a power module disposed in a high voltage region of a substrate, and at least a part of a size and a type of the power module may be varied according to a size of an input voltage.

[0015] The connection terminals of the high voltage area include a first connection terminal connected to the capacitor module and a second connection terminal connected to the power module, and the power module may have a pin formed at a position corresponding to the second connection terminal.

[0016] In order to solve the above technical problems, in a capacitor module arranged in a motor control device according to an embodiment of the present disclosure, the capacitor module includes: a substrate; a component arranged on one surface of the substrate; and pins, arranged on another surface of the substrate and formed at positions corresponding to connection terminals of the motor control device, wherein at least a part of the size and type of at least a part of the components can be changed according to the size of the input voltage.

[0017] The components include a Y capacitor, a filter, and a DC capacitor, and at least a portion of the size and type of the DC capacitor may vary depending on the size of the input voltage.

[0018] In order to solve the above technical problems, a motor control device according to an embodiment of the present disclosure includes: a substrate, including a low voltage area, a high voltage area separated from the low voltage area, and an insulating area arranged between the low voltage area and the high voltage area; and a connecting terminal, the pin arrangement and function of the connecting terminal are defined by a single pin diagram in the high voltage area, wherein the connecting terminal can be connected to a first capacitor module or a second capacitor module.

[0019] The first capacitor module and the second capacitor module may include: a substrate; a component disposed on one surface of the substrate; and pins disposed on the other surface of the substrate and formed at positions corresponding to the connection terminals.

[0020] The motor control device includes a power module disposed in a high voltage region of the substrate, and the connection terminal may include a first connection terminal connected to the first capacitor module or the second capacitor module and a second connection terminal connected to the power module.

[0021] In order to solve the above technical problems, a motor control device according to an embodiment of the present disclosure includes: a substrate, including a low voltage area, a high voltage area separated from the low voltage area, and an insulating area arranged between the low voltage area and the high voltage area; a three-phase switch module, arranged in the high voltage area and connected to the motor; a control unit, arranged in the high voltage area and controlling the drive of the motor; and a DC / DC converter, arranged in the high voltage area and converting the power input to the high voltage area into a motor control power supply.

[0022] The DC / DC converter may be a non-isolated DC / DC converter.

[0023] The motor control device may include a communication module provided in the insulating region and connected to a communication line input to the low voltage region and the control unit.

[0024] The motor control device may include: a communication module provided in the low voltage region and connected to a communication line input to the low voltage region; and an isolator provided in the insulating region and connected to the communication module and the control unit.

[0025] A Y capacitor and a filter may be provided between a power source input to a high voltage region and a DC / DC converter, and a DC capacitor may be provided between a DC / DC converter and a three-phase switching module.

[0026] The size of the low voltage region may be formed to be smaller than the size of the high voltage region.

[0027] The number of pins of the connector connected to the high voltage area may be greater than the number of pins connected to the low voltage area.

[0028] The connector connected to the high voltage area may include four pins connected to a power input line, a power ground line, and two interlock lines, and the connector connected to the low voltage area may include two pins connected to a receiving line and a transmission line connected to a communication module.

[0029] In order to solve the above technical problems, in a motor control device including a low voltage area, a high voltage area separated from the low voltage area, and an insulating area arranged between the low voltage area and the high voltage area, the motor control device according to an embodiment of the present disclosure includes: a three-phase switch module, which is arranged in the high voltage area and connected to the motor; a control unit, which is arranged in the high voltage area and controls the drive of the motor; a DC / DC converter, which is arranged in the high voltage area and converts the power input to the high voltage area into a motor control power supply; and a communication module, which is arranged in the insulating area and connected to the communication line input to the low voltage area and the control unit.

[0030] The DC / DC converter may be a non-isolated DC / DC converter.

[0031] Beneficial Effects

[0032] Previously, the insulation isolation distance had to be formed differently depending on the size of the high voltage input to the motor control device, and the parts had to be changed to match the voltage, but according to the present embodiment, the size of the low voltage area and the entire substrate are shared, and the parts that must be changed according to the size of the input voltage are modularized so that all voltages input in various ways can be compatible within the same substrate.

[0033] This allows cost savings and changes in design freedom through common use of low voltage areas of the substrate.

[0034] In addition, the motor control device according to the present embodiment is a motor control device that uses a single input power supply as a power supply for driving and controlling the motor. Since the input power supply is changed to a single power supply of high voltage and the signal moves in a single area, expensive insulating components are not required to transmit the signal, and a non-isolated DC / DC converter can be used to generate power.

[0035] In addition, the complexity of the circuit configuring the motor control device is reduced, which can save time and cost during design and improve the stability and reliability of the vehicle.

[0036] In addition, since the number of components provided in the low voltage region is minimized, the low voltage region can be designed to be smaller, thereby minimizing the insulating region, and freedom of component design and effective use of space in the high voltage region are possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a diagram describing a conventional motor control device.

[0038] Figures 2 to 4 2 is a diagram describing a motor control device according to a first embodiment of the present disclosure.

[0039] Figure 5is a diagram describing a conventional motor control device.

[0040] Figures 6 to 9 2 is a diagram for explaining a motor control device according to a second embodiment of the present disclosure. DETAILED DESCRIPTION

[0041] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0042] However, the technical concept of the present disclosure is not limited to the partial embodiments to be described but may be implemented in various forms, and within the scope of the technical concept of the present disclosure, one or more constituent elements may be selectively combined or replaced between the embodiments.

[0043] In addition, unless explicitly defined and described, the terms (including technical and scientific terms) used in the embodiments of the present disclosure may be interpreted as meanings that can be generally understood by those skilled in the art, and commonly used terms (for example, terms defined in dictionaries) may be interpreted in consideration of the contextual meaning of the relevant technology.

[0044] In addition, the terms used in this specification describe the embodiments and are not intended to limit the present disclosure.

[0045] In this specification, unless specifically stated in a phrase, a singular form may include a plural form, and when described as "at least one (or more than one) of A and B and C", it may include more than one combination of all combinations that can be combined with A, B and C.

[0046] In addition, when describing the components of the embodiments of the present disclosure, terms such as first, second, A, B, (a), and (b) may be used. These terms are only intended to distinguish a component from other components, and these terms do not limit the nature, order, or sequence of the components.

[0047] Furthermore, when a component is described as being “connected,” “coupled,” or “interconnected” with another component, the component is not only directly connected, coupled, or interconnected with the other components but may also include a case where the component is “connected,” “coupled,” or “interconnected” due to another component between the other components.

[0048] In addition, when described as being formed or disposed “on” (above) or “under” (below) each component, “on” (above) or “under” (below) indicates that this includes not only a case where the two components are in direct contact but also a case where one or more other components are formed or disposed between the two components. In addition, when expressed as “on (above)” or “under (below)”, it may include not only a meaning in an upward direction relative to one component but also a meaning in a downward direction relative to one component.

[0049] A high voltage (100V or more) as a motor drive power source and a low voltage (12V) as a control power source are input to the inverter in parallel. Here, the input high voltage can be divided into 600V and 1200V, 600V is the maximum withstand voltage of most hybrid electric vehicles (HEV) and plug-in hybrid electric vehicles (PHEV), and 1200V is the maximum withstand voltage of electric vehicles (BEV) driven only by batteries.

[0050] Figure 1 is a diagram for explaining a conventional motor control device. Specifically, Figure 1 (a) is a block diagram of an inverter of a motor control device having a withstand voltage of 600 V in a high voltage region, and Figure 1 (b) is a block diagram of an inverter of a motor control device having a withstand voltage of 1200V in a high voltage region. Here, since an actual high voltage of 400V is input, Figure 1 The motor control device of (a) can be covered by a motor control device having a maximum withstand voltage of 600V, and since an actual high voltage of 800V is input, Figure 1 The motor control device of (b) can be covered by a motor control device having a maximum withstand voltage of 1200 V. The numerical values ​​of the voltage magnitudes are merely exemplary and may of course vary.

[0051] Reference Figure 1 (a) and Figure 1 (b), when the size of the input high voltage changes, the configuration of the components and substrate corresponding to the voltage changes. Specifically, the size of the insulating area separating the low voltage area and the high voltage area changes. The isolation distance 1′ of the insulating area when the high voltage is 1200V must be formed to be greater than the isolation distance 1 of the insulating area when the high voltage is 600V.

[0052] In addition, according to the size of the input high voltage, the size and type of the components set in the high voltage area change, and the spacing between the components also changes. Electronic components with different specifications can be set according to the size of the input high voltage. For example, as the size of the input high voltage increases, the size of the DC capacitor and the power module may increase. On the other hand, in a configuration such as a Y capacitor and a CMC filter, electronic components with different specifications can be set even if the size of the components is the same. The size of the DC capacitor 2' and the power module 3' when the high voltage is 1200V can be larger than the size of the DC capacitor 2 and the power module 3 when the high voltage is 600V.

[0053] That is, there is a problem that the configuration and arrangement of the parts in the circuit substrate of the motor control device must be designed individually according to the size of the high voltage input. Therefore, through this embodiment, the parts set in the low voltage area are shared, and the parts set in the high voltage area are modularized, so that various high voltage values ​​can be handled simply by replacing the modules.

[0054] Figures 2 to 4 1 is a diagram for explaining a motor control device according to a first embodiment of the present disclosure.

[0055] The motor control device 10 according to the first embodiment of the present disclosure may include a substrate 21 , a capacitor module 20 , and connection terminals.

[0056] The motor control device 10 according to the first embodiment of the present disclosure may be a motor control device that drives or brakes a motor and forms a shift-by-wire system (hereinafter, referred to as SBW). The SBW is composed of a switched reluctance motor (hereinafter, referred to as SRM) and a SBW control unit (SCU), and the SRM and the SCU may be configured as an integrated unit. The SRM and the SCU may also be configured independently. The motor control device 10 according to this embodiment may operate as an SCU constituting the SBW.

[0057] The substrate 21 may include a low voltage region 12, a high voltage region 13 spaced apart from the low voltage region 12, and an insulating region 14 disposed between the low voltage region 12 and the high voltage region 13. Here, the motor control device 10 is described as being configured in one substrate 21, but is not necessarily limited thereto, and may be formed in a layer structure in which a plurality of substrates are stacked. In this case, each of the plurality of substrates may be divided into a low voltage region, a high voltage region, and an insulating region, and only a portion of the plurality of substrates may be divided into at least one of the low voltage region, the high voltage region, and the insulating region.

[0058] The low voltage area 12 is an area where components using low voltage as a power source are set. The size of the low voltage input to the low voltage area 12 may be 12V, but this is exemplary and not limited thereto. A component that transmits a control signal to the vehicle and generates a signal for controlling the power module 18 set in the high voltage area 13 may be set in the low voltage area 12.

[0059] For example, a power management integrated circuit (PMIC) 15, a CANIC 16, and a micro control unit (MCU) 17 connected to a low voltage connector (LV connector) 31 may be provided in the low voltage region 12. The type, size, and spacing of the components provided in the low voltage region 12 may be fixed regardless of the magnitude of the high voltage input to the high voltage region 13. That is, regardless of the magnitude of the high voltage input to the high voltage region 13, the configuration in the low voltage region 12 may be common.

[0060] The high voltage region 13 is a region where components using a high voltage power supply are set. The magnitude of the high voltage input to the high voltage region 13 may be 600V or 1200V, but this is exemplary and not limited thereto. In the high voltage region 13, components for generating signals for driving and controlling the motor may be set.

[0061] In the following description, for convenience, the lower 600V of the high voltage input to the high voltage region 13 may be referred to as the first voltage, and the higher 1200V of the high voltage input to the high voltage region 13 may be referred to as the second voltage. The type of high voltage input to the high voltage region 13 may vary, and naturally there may be a third voltage, a fourth voltage, etc.

[0062] The insulating region 14 may be provided between the low voltage region 12 and the high voltage region 13 for insulation. Figure 2 It is shown that no components are provided in the insulating region 14 , but components such as an isolator and a DC / DC converter may be provided for transmitting and receiving signals between components provided in the low voltage region 12 and components provided in the high voltage region 13 .

[0063] The distance between the low voltage region 12 and the high voltage region 13 can be formed according to the maximum value of the input high voltage. For example, if the input high voltage is a first voltage, the distance of the insulating region 14 should be formed as a first distance, and if the input high voltage is a second voltage, the distance of the insulating region 14 should be formed as a second distance. The motor control device 10 according to the present embodiment can form the distance of the insulating region 14 as the second distance based on the case where the input high voltage is the second voltage. The second distance can be a value greater than the first distance. That is, in order to modularize the substrate 21 of the motor control device 10 regardless of the input high voltage, the insulating region 14 can be formed based on the maximum value of the input high voltage.

[0064] The capacitor module 20 and the power module 18 may be disposed in the high voltage area 13 .

[0065] The capacitor module 20 may include a substrate 21 , components disposed on one surface of the substrate 21 , and pins 25 disposed on another surface of the substrate 21 .

[0066] The capacitor module 20 may include a first capacitor module whose input high voltage has a first voltage and a second capacitor module whose input high voltage has a second voltage. The components provided in the first capacitor module and the components provided in the second capacitor module may be of the same type, but may have different specifications and sizes. For example, at least a portion of the components provided in the second capacitor module may be larger than the components provided in the first capacitor module.

[0067] The sizes of the substrate 21 of the first capacitor module and the substrate 21′ of the second capacitor module may be different from each other. For example, the size of the substrate 21′ of the second capacitor module may be larger than the size of the substrate 21 of the first capacitor module. Since the first capacitor module and the second capacitor module should be identically connected to the connection terminals of the substrate 21 of the motor control device 10, the positions of the pins 25 formed on one surface of the substrate 21 may be identical.

[0068] The components provided in the capacitor module 20 may include a Y capacitor 24, a filter 23, and a DC capacitor 22. At least a portion of the components provided in the capacitor module 20 may vary in size and type according to the size of the input voltage. Here, the type may refer to the specifications of each component. For example, a Y capacitor and a filter for a first voltage may not work at a second voltage. A Y capacitor and a filter for a second voltage may not work smoothly at a first voltage.

[0069] The filter 23 may be a common mode filter (CM) or a CMC filter. The DC capacitor 22 may be a film capacitor. The Y capacitor 24 and the filter 23 may be components for filtering noise of an input signal, and the DC capacitor 22 may be a component for providing a stable power supply to the motor control device 10.

[0070] At least a portion of the size and type of the DC capacitor 22 may vary according to the size of the input voltage. Here, the type may refer to the specifications of the various components. For example, a DC capacitor for a first voltage may not work at a second voltage. A DC capacitor for a second voltage may not work smoothly at the first voltage. In addition, the size of the DC capacitor 22 provided in the second capacitor module may be greater than the size of the DC capacitor 22 provided in the first capacitor module.

[0071] The power module 18 is a power conversion device and may be a component including a switching element (IGBT) and a freewheeling diode (FWD) for power conversion. The power module 18 may be connected to the motor through the motor connector 33. At least a part of the size and type of the power module 18 may vary according to the size of the input voltage. Here, the type may refer to the specification. For example, a power module for a first voltage may not work at a second voltage. A power module for a second voltage may not work smoothly at a first voltage. In addition, the size of the power module 18 inputting the second voltage may be larger than the size of the power module 18 inputting the first voltage. The power module 18 may be a pin-to-pin component connected to the connection terminal of the substrate 21 of the motor control device 10.

[0072] The high voltage region 13 may include a connection terminal, and the pin arrangement and function of the connection terminal are defined by a single pin diagram. The connection terminal of the high voltage region 13 may include a first connection terminal connected to the capacitor module 20 and a second connection terminal connected to the power module 18. The capacitor module 20 may have a pin 25 formed at a position corresponding to the first connection terminal. The power module 18 may have a pin formed at a position corresponding to the second connection terminal. The pin 25 of the capacitor module 20 may be connected to the connection terminal of the high voltage region 13 by welding. The pin of the power module 18 may be connected to the connection terminal of the high voltage region 13 by welding.

[0073] In other words, the capacitor module 20 can be combined with or separated from the substrate 21 through a connection terminal whose pin arrangement and function are defined by a single pin diagram included on one surface of the substrate 21 in the high voltage area 13, so when manufacturing the motor control device 10, the motor control device 10 can be selectively manufactured by equipping a first capacitor module whose input high voltage is a first voltage or a second capacitor module whose input high voltage is a second voltage.

[0074] In addition, when manufacturing the motor control device 10 , the motor control device 10 can be manufactured by selectively attaching the power module 18 using the first voltage as the input power or the power module 18 using the second voltage as the input power.

[0075] The components provided in the capacitor module 20 can be connected to the high voltage and signal input from the high voltage connector 32 and the power module 18 through the first connection terminal of the high voltage region 13. The power module 18 can be connected to the motor connector 33 through the second connection terminal of the high voltage region 13.

[0076] Previously, depending on the size of the high voltage input to the motor control device, the insulation isolation distance had to be formed differently and the components had to be changed according to the voltage, but according to the present embodiment, the size of the low voltage area and the entire substrate are shared, and the components that must be changed according to the size of the input voltage are modularized, so that various input voltages can be compatible within the same substrate, and costs can be saved by sharing the low voltage area of ​​the substrate, and design changes can be made freely.

[0077] As mentioned above, reference has been made Figures 1 to 4 A motor control device according to a first embodiment of the present disclosure is described. Figures 5 to 9 The motor control device according to the second embodiment of the present disclosure is described. The detailed description of the motor control device according to the second embodiment of the present disclosure is based on the name, terminology and functions of the motor control device according to the first embodiment of the present disclosure and the detailed description of each embodiment, and may be the same as or different from each other.

[0078] In the inverter, a high voltage (100V or more) is input in parallel as a motor drive power supply, and a low voltage (12V) is input as a control power supply. An isolation distance for insulation between the high voltage and the low voltage and an isolated DC / DC converter for transmitting the low voltage power supply to the high voltage area are required. In addition, there is a problem that an expensive and complex isolated DC / DC converter is required to transmit the control signal generated from the low voltage power supply to the high voltage area, and a digital isolator is required for isolated signal transmission.

[0079] A high voltage (above 100V) is used as the motor drive power supply, and a low voltage (12V) is used as the control power input inverter. The high voltage and low voltage switches require an isolated DC / DC converter, and the low voltage power supply must be transmitted from the high voltage area. In addition, in order to transmit the control signal generated from the low voltage power supply to the high voltage area, a complex and expensive isolated DC / DC connector is required, and a digital isolator is required for isolated signal transmission, which is problematic.

[0080] More specifically, refer to Figure 5 In the conventional motor control device shown, a high voltage power supply (HVDC) is input into a high voltage region (HV layer), and a low voltage power supply (LVDC) and a communication signal of a CAN bus are input into a low voltage region (LV layer). The three-phase switch module for controlling the operation of the motor can selectively use the high voltage power supply and the low voltage power supply.

[0081] Specifically, the power management IC (PMIC) and the micro control unit (MCU) are set in the low voltage area. The PMIC (semiconductor for power management) can convert the input low voltage power supply and transmit it to the MCU and the three-phase switch module, and the MCU can receive the communication signal from the CAN bus and transmit the control signal to the various components of the motor control device.

[0082] That is, since a high voltage power supply and a low voltage power supply are input to the motor control device and the two power supplies are selectively used to drive and control the motor, there is a problem that the number of components that must be set in the motor control device increases and the size of the insulating area (isolation layer) that must be fixed also increases.

[0083] The motor control device according to this embodiment only receives a high voltage power supply as input, and only sets the communication module in the low voltage area, thereby eliminating unnecessary components and reducing manufacturing costs and ensuring design freedom, minimizing the low voltage area and the insulation area, and improving space utilization within the substrate.

[0084] Figures 6 to 9 2 is a diagram for explaining a motor control device according to a second embodiment of the present disclosure.

[0085] The motor control device 1000 according to the second embodiment of the present disclosure may include a substrate, a three-phase switch module 130 , a control unit 120 , and a DC / DC converter 110 , and may include a communication module 140 .

[0086] The motor control device 1000 according to the second embodiment of the present disclosure can be a motor control device that drives or brakes a motor and forms a wire-controlled shifting system (hereinafter, referred to as SBW). The SBW is composed of a switched reluctance motor (hereinafter, referred to as SRM) and a SBW control unit (SCU), and the SRM and the SCU can be configured as an integrated unit. The SRM and the SCU can also be configured independently. The motor control device 1000 according to this embodiment can operate as an SCU that forms an SBW.

[0087] The substrate may include a low voltage region 1200, a high voltage region 1100 spaced apart from the low voltage region 1200, and an insulating region 1300 disposed between the low voltage region 1200 and the high voltage region 1100. Here, the motor control device 1000 is described as being configured in one substrate, but is not necessarily limited thereto, and may be formed in a layer structure in which a plurality of substrates are stacked. In this case, each of the plurality of substrates may be divided into a low voltage region, a high voltage region, and an insulating region, and only a portion of the plurality of substrates may be divided into at least one of the low voltage region, the high voltage region, and the insulating region.

[0088] The distance between the low voltage region 1200 and the high voltage region 1100 may be formed according to the magnitude of the voltage input to the high voltage region 1100. For example, as the magnitude of the voltage input to the high voltage region 1100 increases, the spacing distance of the insulating region 1300 may increase.

[0089] The three-phase switch module 130 may be disposed in the high voltage region 1100 and connected to the motor 300 .

[0090] Specifically, the three-phase switch module 130 can be configured as a three-phase switch, and the three-phase switch module 130 can be configured as a three-phase bridge operating in different phases U, V and W. The three-phase switch module 130 can be configured as six bridges. When configured with six switching elements, the three-phase switch module 130 includes three high-side switches and three low-side switches, and the high-side switches and low-side switches paired with each other are complementarily turned on to operate the motor in three phases.

[0091] Here, the switching element may be configured as any one of an insulated gate bipolar transistor (IGBT), a MOSFET, a transistor, and a relay as a power switching element for driving a motor. For example, if the switching element is an IGBT, each IGBT including the three-phase switch module 130 may be configured with a gate, a carrier, and an emitter, and may be turned on and off according to a gate signal applied to the gate. The three-phase switch module 130 may be three-phase on, two-phase on, or single-phase on, and may be all turned off.

[0092] The control unit 120 may be provided in the high voltage region 1100 and may control driving of the motor 300 .

[0093] Specifically, the control unit 120 applies a gate signal to turn on one switching element of at least one phase in the three-phase switch module 130 and electrically drives the motor 300. The control unit 120 may apply the gate signal to the switching element through a gate driver unit (GDU).

[0094] The control unit 120 may receive the converted power from the DC / DC converter 110. The control unit 120 may generate a control signal for driving the motor 300 according to a signal input from the communication module 140. The control unit 120 may detect whether the motor 300 is operating normally through a current detection sensor, a position sensor, etc. provided in the motor 300.

[0095] The DC / DC converter 110 may be provided in the high voltage region 1100 and may convert power input to the high voltage region 1100 into motor control power. The DC / DC converter 110 may be a non-isolated DC / DC converter.

[0096] Specifically, there are two types of DC / DC converters: non-isolated DC / DC converters and isolated DC / DC converters. The isolated DC / DC converter is insulated so that the input side (primary side) and the output (secondary side) are separated, and the output voltage is lower, so the risk of electric shock is lower. Because there is conduction between the input and the output, the non-isolated DC / DC converter is used in situations where insulation is not required, such as voltage conversion within the same substrate; however, since the output voltage is a high voltage, there may be a risk of electric shock. The number of components that include the isolated DC / DC converter is greater than the number of components that include the non-isolated DC / DC converter, and therefore, the price of the isolated DC / DC converter is higher than that of the non-isolated DC / DC converter.

[0097] That is, according to the second embodiment of the present disclosure, since the DC / DC converter 110 only receives power input to the high voltage region 1100, it can be configured as a non-isolated DC / DC converter arranged in the high voltage region 1100 and in the same substrate, so that no insulation is required.

[0098] In the high voltage region 1100, the Y capacitor 150 and the filter 160 may be provided between the power supply 100 input to the high voltage region 1100 and the DC / DC converter 110. In the high voltage region 1100, the DC capacitor 180 may be provided between the DC / DC converter 110 and the three-phase switch module 130.

[0099] The Y capacitor 150 and the filter 160 may be components for filtering out noise of a power supply signal input to a high voltage region. The filter 160 may be a common mode filter (CM) or a CMC filter. The DC capacitor 180 may be a film capacitor. The DC capacitor 180 may be a component for supplying a stable power supply to the motor control device 1000.

[0100] A low voltage difference (LDO) linear regulator 170 connected to the output terminal of the DC capacitor 180 may be provided in the high voltage region 1100. The LDO is a regulator that may be provided on a circuit having a small voltage difference between input and output, and is an IC for reducing the power supply input. That is, the LDO may be included to receive the voltage converted by the DC capacitor 180 and convert the voltage to a voltage smaller than the voltage input when outputting to the control unit 120 and the three-phase switch module 130.

[0101] The communication module 140 may be connected with a communication line input to the low voltage region 1200 and the control unit 120 provided in the high voltage region 1100 .

[0102] The communication module 140 is a module connected to a communication system in the vehicle, and may be one of CAN, LIN, FlexRay, and Ethernet. When the communication module 140 performs CAN communication, the communication module 140 may be connected to a communication line of a CAN bus 200 connected to the outside of the motor control device 1000. Therefore, the communication module 140 may transmit and receive various signals to and from an electronic control unit (ECU) provided outside the motor control device 1000.

[0103] The communication module 140 may be provided in the insulating region 1300. The communication module 140 provided in the insulating region 1300 may be an isolation transceiver including an isolation function, and a separate isolator may not be provided.

[0104] The communication module 140 may be disposed in the low voltage region 1200. When the communication module 140 is disposed in the low voltage region 1200, a signal insulator 190 connected to the communication module 140 and the control unit 120 may be disposed in the insulating region 1300. Here, the signal insulator 190 may separate a low voltage signal and a high voltage signal of a signal moving between the low voltage region and the high voltage region, thereby preventing damage to the low voltage components and preventing noise from being generated.

[0105] The size of the low voltage region 1200 may be smaller than that of the high voltage region 1100. The size of the low voltage region 1200 may be smaller than that of the high voltage region 1100 within the substrate. The number of connector pins connected to the high voltage region 1100 may be greater than the number of connector pins connected to the low voltage region 1200.

[0106] The number of pins of the connector connected to the high voltage area 1100 may be at least four. The connector connected to the high voltage area 1100 may include four pins connected to a power input line, a power ground line, and two interlock lines. The interlock line is a line connected to an interlock circuit, and the interlock circuit refers to a circuit that electrically blocks an erroneous signal from being input to the motor to prevent a dangerous situation (e.g., an erroneous motor drive command or a reverse switch that accidentally turns on the motor during a power outage).

[0107] At least two or more connector pins connected to the low voltage area 1200 may be formed. The connector connected to the low voltage area 1200 may include a receiving line connected to the communication module 140 and two pins connected to the transmission line. When the communication module 140 is a CAN communication system, the receiving line and the transmission line may be a CAN H line and a CAN L line. That is, when compared with a motor control device that simultaneously receives inputs of a conventional high voltage power supply and a low voltage power supply, two connector pins of a low voltage power supply input to the low voltage area may not be included.

[0108] That is, according to this embodiment, since only a single power supply is input from the high voltage area as the power supply for driving the motor control device, the low voltage area can be used as a minimum spatial area used only for vehicle communication, and the insulating area separating the low voltage area and the high voltage area can also be minimized.

[0109] The modified embodiment according to the present embodiment may include some parts of the first embodiment and some parts of the second embodiment together. That is, the modified embodiment may include the first embodiment, but may omit some parts of the first embodiment and include some parts of the corresponding second embodiment. Alternatively, the modified embodiment may include the second embodiment, but may omit some parts of the second embodiment and include some parts of the corresponding first embodiment.

[0110] The features, structures, effects, etc. described in the above embodiments are included in at least one embodiment and are not necessarily limited to one embodiment. In addition, the features, structures, effects, etc. exemplified in the various embodiments can be combined or modified and implemented in other embodiments by a person skilled in the art to which the embodiments belong. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the embodiments.

Claims

1. A motor control device, include: a substrate comprising a low voltage region, a high voltage region spaced apart from the low voltage region, and an insulating region disposed between the low voltage region and the high voltage region; as well as A capacitor module is disposed in the high voltage region. wherein the high voltage region includes connection terminals, the pin arrangement and function of the connection terminals are defined by a single pin diagram, and The capacitor module has pins formed at positions corresponding to the connection terminals.

2. The motor control device according to claim 1, in, The capacitor module includes a substrate, a component disposed on one surface of the substrate, and a pin disposed on another surface of the substrate, and At least some of the sizes and types of at least some of the components vary according to the magnitude of the input voltage.

3. The motor control device according to claim 1, in, The components disposed on one surface of the capacitor module include a Y capacitor, a filter, and a DC capacitor, and At least a portion of the size and type of the DC capacitor varies according to the size of the input voltage.

4. The motor control device according to claim 1, include: A power module is disposed in the high voltage region of the substrate. At least a part of the size and type of the power module varies according to the size of the input voltage.

5. The motor control device according to claim 4, in, The connection terminal of the high voltage area includes a first connection terminal connected to the capacitor module and a second connection terminal connected to the power module, and The power module has a pin formed at a position corresponding to the second connection terminal.

6. A capacitor module arranged in a motor control device, in, The capacitor module comprises: substrate; A component disposed on one surface of the substrate; and pins are provided on the other surface of the substrate and formed at positions corresponding to the connection terminals of the motor control device, and At least some of the sizes and types of at least some of the components vary according to the magnitude of the input voltage.

7. The capacitor module according to claim 6, in, The components include a Y capacitor, a filter and a DC capacitor, and At least a portion of the size and type of the DC capacitor varies according to the size of the input voltage.

8. A motor control device, include: a substrate comprising a low voltage region, a high voltage region spaced apart from the low voltage region, and an insulating region disposed between the low voltage region and the high voltage region; as well as a connection terminal, the pin arrangement and function of which are defined by a single pin map in the high voltage region, The connecting terminal can be connected to the first capacitor module or the second capacitor module.

9. The motor control device according to claim 8, in, The first capacitor module and the second capacitor module include: substrate; A component disposed on one surface of the substrate; and Leads are provided on the other surface of the substrate and formed at positions corresponding to the connection terminals.

10. The motor control device according to claim 8, include: A power module is disposed in the high voltage region of the substrate. The connection terminals include a first connection terminal connected to the first capacitor module or the second capacitor module and a second connection terminal connected to the power module.

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