Vehicle control unit

Abstract

A regional ECU (12), which is a vehicle control unit, is provided with a circuit board (30), an input / output module (40), and a power distribution circuit (415). The circuit board (30) has a microcomputer (321) including a CPU as a processor, and power supply circuits (322, 323). An input / output module (40) that provides an input / output function is provided separately from the circuit board (30), and has a plurality of board connection terminals (42) and a plurality of external connection terminals (43) that are electrically connected to an external device. The substrate connection terminal (42) is electrically connected to the circuit substrate (30).

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority from Japanese Patent Application No. 2023-21055 filed in Japan on February 14, 2023, and the entire contents of which are incorporated herein by reference. Technical Field

[0003] The disclosure in this specification relates to a control unit for a vehicle. Background Art

[0004] Patent Document 1 discloses a vehicle control unit. In Patent Document 1, a plurality of ECU substrates are housed in a housing. The contents of the prior art document are incorporated by reference into the description of the technical elements in this specification.

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2003-304083.

[0006] In recent years, the integration of automotive control units has been advancing. This integration allows various functions to be integrated into a single control unit, increasing the number of inputs and outputs, and consequently, the number of terminals. The number of inputs and outputs varies depending on the vehicle model and specifications, and designing the inputs and outputs for each model and specification requires significant development time.

[0007] In Patent Document 1, multiple ECU substrates are electrically connected via busbars. However, each ECU substrate requires a connector and is independently connected to a wiring harness. Consequently, input and output functions must be designed for each ECU. From these perspectives, as well as from other perspectives not mentioned, further improvements are required for vehicle control units. Summary of the Invention

[0008] The present disclosure has been made in view of such a problem, and an object of the present disclosure is to provide a vehicle control unit capable of easily changing input and output functions.

[0009] One of the disclosed vehicle control units is a vehicle control unit having a gateway function, and includes:

[0010] A circuit substrate having a processor and a power supply circuit;

[0011] An input / output module having a plurality of substrate connection terminals and a plurality of external connection terminals (43) electrically connected to external devices, and providing input / output functions for the circuit substrate; and

[0012] Power distribution circuit, distributes power,

[0013] The substrate connection terminal is electrically connected to the circuit substrate.

[0014] The disclosed vehicle control unit incorporates an input / output module separate from the circuit board. In other words, the input / output functions are separated from the underlying circuit board. By replacing and / or adding or removing input / output modules based on vehicle model and specifications, the vehicle control unit's input / output functions can be easily modified. For example, the number of external connection terminals, the number of circuit board connection terminals, and the number of so-called input / output pins can be changed.

[0015] The various embodiments disclosed in this specification employ different technical means to achieve their respective objectives. The claims and the reference numerals in parentheses therein are provided for illustrative purposes only to indicate the correspondence with the embodiments described below and do not limit the scope of the invention. The objectives, features, and effects disclosed in this specification will become more apparent with reference to the detailed description and accompanying drawings that follow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing an example of an in-vehicle network system including a local ECU.

[0017] Figure 2 This is a diagram showing an example of the arrangement of area ECUs.

[0018] Figure 3 It is an exploded perspective view showing a schematic configuration of a zone ECU according to the first embodiment.

[0019] Figure 4 This is a top view of the regional ECU.

[0020] Figure 5 It is along Figure 4 Cross-sectional view of line VV.

[0021] Figure 6 This is a diagram showing an example of the relationship between the SMD connector and the board connection terminals.

[0022] Figure 7 It is a diagram showing a modified example.

[0023] Figure 8 It is a diagram showing a modified example.

[0024] Figure 9 It is a diagram showing a modified example.

[0025] Figure 10 It is a diagram showing a modified example.

[0026] Figure 11 It is a top plan view showing a zone ECU according to the second embodiment.

[0027] Figure 12 It is along Figure 11A cross-sectional view taken along line XII-XII. DETAILED DESCRIPTION

[0028] Hereinafter, multiple embodiments will be described based on the accompanying drawings. In addition, sometimes, by adding the same reference numerals to corresponding components in each embodiment, repeated descriptions are omitted. In the case where only a portion of the configuration is described in each embodiment, the other portions of the configuration can apply the configuration of other embodiments previously described. In addition, not only the combinations of configurations explicitly described in the description of each embodiment, but also the configurations of multiple embodiments can be partially combined with each other even if not explicitly described, as long as the combination does not particularly hinder.

[0029] (First embodiment)

[0030] First, based on Figure 1 as well as Figure 2 This section describes an in-vehicle network system that includes a regional ECU. ECU stands for Electronic Control Unit. A regional ECU is equivalent to a vehicle control unit. Hereinafter, references to A and / or B refer to at least one of A and B.

[0031] <In-vehicle network system>

[0032] Figure 1 An example of an in-vehicle network system including a regional ECU according to this embodiment is shown. Figure 1 As shown, the in-vehicle network system 10 is configured to include a central ECU 11, a plurality of regional ECUs 12, other devices 13, communication lines, etc. The in-vehicle network system 10 is sometimes referred to as a communication system.

[0033] The central ECU 11 is a higher-level ECU than the regional ECUs 12. The central ECU 11 comprehensively controls the plurality of regional ECUs 12. The central ECU 11 generates commands (control signals) for controlling devices 13 and transmits them to the corresponding regional ECUs 12. The central ECU 11 controls the devices 13 via the regional ECUs 12.

[0034] Regional ECUs 12 are independently located in multiple zones defined within the vehicle. They control devices 13 located in their corresponding zones. Regional ECUs 12 control corresponding devices 13 based on commands from the central ECU 11. Regional ECUs 12 can perform all control tasks based on commands from the central ECU 11, or they can perform only some control tasks independently of commands from the central ECU 11. For example, regional ECUs 12 can generate control signals for control that requires real-time performance. For example, regional ECUs 12 can also generate target torques for engine and MG control. MG stands for Motor Generator.

[0035] The regional ECU 12 is communicatively connected to the central ECU 11 and other regional ECUs 12. The regional ECU 12 is also communicatively connected to multiple devices 13 located in the corresponding region. For example, the regional ECU 12 relays communications between the central ECU 11 and the devices 13 located in the corresponding region. For example, the regional ECU 12 relays communications between the devices 13 located in the corresponding region. The regional ECU 12 has a gateway function.

[0036] The device 13 may include, for example, an ECU 131 that is subordinate to the regional ECU 12. In this case, the regional ECU 12 controls the actuator via the ECU 131. The device 13 may also include an actuator 132. In this case, the regional ECU 12 controls the actuator 132 without going through the ECU 131. The device 13 may include a sensor 133. The regional ECU 12, for example, acquires detection signals from the sensor 133. The device 13 may include the ECU 131 and / or the actuator 132 as control objects of a single regional ECU 12. The device 13 may also include multiple control objects, such as multiple ECUs 131. The regional ECU 12 may also acquire detection signals from sensors via the ECU 131. The central ECU 11 may also directly acquire detection signals from some of the multiple sensors installed in the vehicle without going through the regional ECU 12.

[0037] The regional ECU 12 communicates with the central ECU 11, other regional ECUs 12, and devices 13 configured in the corresponding area in accordance with a prescribed communication protocol. As an example, the regional ECU 12 of this embodiment communicates with the central ECU 11 and other regional ECUs 12 in accordance with the ETHERNET protocol. ETHERNET is a registered trademark. The regional ECU 12 communicates with the ECU 131 and actuator 132 in accordance with the CAN protocol. CAN is short for Controller Area Network and is a registered trademark. The regional ECU 12 communicates with at least a portion of the sensor 133 in accordance with the LIN protocol. LIN is short for Local Interconnect Network. The regional ECU 12 can also communicate with a portion of the sensor 133, such as a camera, millimeter-wave radar, or LiDAR, in accordance with the CAN protocol or the ETHERNET protocol. LiDAR is short for Light Detection and Ranging / Laser Imaging Detection and Ranging.

[0038] Figure 2 An example of the configuration of the zone ECU 12 in a vehicle is shown. Figure 2 For convenience, only the ECU 131 among the devices 13 connected to the regional ECU 12 is shown. In addition, the communication lines connecting the central ECU 11 and the regional ECUs 12 and the communication lines connecting the regional ECUs 12 to each other are omitted.

[0039] Multiple zones are defined in the vehicle 15. The vehicle 15 is divided into multiple zones. Zones are sometimes referred to as areas, regions, or zones. A regional ECU 12 is located in each zone. The regional ECU 12 controls multiple devices 13 located in the corresponding zone. The number of zones and their locations within the vehicle are not specifically limited. Zones can be set arbitrarily. Increasing or decreasing the number of zones also increases or decreases the number of regional ECUs 12. The location of the central ECU 11 is not specifically limited. For example, considerations may be given to the length of the wiring harnesses connecting to each regional ECU 12.

[0040] As an example, in this embodiment, the vehicle 15 is divided into four regions: the vehicle front, cabin right, cabin left, and vehicle rear. The in-vehicle network system 10 includes a central ECU 11 and four regional ECUs 12. The regional ECUs 12 include regional ECUs 121, 122, 123, and 124.

[0041] The regional ECU 121 is located in the front area of ​​the vehicle. For example, a body ECU 131B and a powertrain ECU 131P are communicatively connected to the regional ECU 121, serving as the ECU 131. The body ECU 131B controls the body components on the front side of the vehicle. For example, the body ECU 131B controls the power windows, keyless entry, wipers, and headlights. The powertrain ECU 131P controls the engine, MG, and other driving sources, as well as the transmission.

[0042] The regional ECU 122 is located in the area to the right of the cockpit. Connected to the regional ECU 122 are, for example, a cockpit ECU 131C and an ADAS ECU 131A, serving as the ECU 131, in a communicative manner. The cockpit ECU 131C controls, for example, the instrument panel, navigation system, and air conditioning system. The ADAS ECU 131A performs controls to assist the driver's driving operations. ADAS stands for Advanced Driving Assistant System. The ADAS ECU 131A is capable of performing advanced driving assistance or partial autonomous driving at around Level 2 of the automated driving levels specified by the American Association of Automotive Engineers. For example, Level 1 assists with either steering or acceleration / deceleration. Level 2 assists with both steering and acceleration / deceleration.

[0043] The area ECU 123 is arranged in an area on the left side of the cabin. Like the area ECU 122 , for example, the area ECU 123 is communicably connected to the cockpit ECU 131C and the ADAS ECU 131A.

[0044] The area ECU 124 is located in the rear area of ​​the vehicle. For example, a body ECU 131B is communicatively connected to the area ECU 124 as the ECU 131. The body ECU 131B controls the body components on the rear side of the vehicle. For example, the body ECU 131B controls the power windows, trunk, rear door, and brake lights.

[0045] The regional ECU 12 includes a processor, memory, storage, and input / output circuits. An example of a processor is a CPU. CPU stands for Central Processing Unit. The processor accesses memory to execute various processes necessary to achieve its functions. Memory is a volatile storage medium, such as RAM. RAM stands for Random Access Memory.

[0046] The memory is configured to include a non-volatile storage medium such as flash memory. The memory stores a control program executed by the processor. The processor's execution of the control program is equivalent to executing the control method corresponding to the control program. The memory appropriately stores various parameters such as thresholds used for determination and initial values ​​used for calculations, as well as maps and functions used for calculations. Furthermore, the central ECU 11 and ECU 131 have the same configuration as the regional ECU 12.

[0047] <Structure of regional ECU>

[0048] Next, based on Figure 3 、 Figure 4 、 Figure 5 as well as Figure 6 , the structure of the area ECU 12 will be described. Figures 3 to 6 An example of a configuration applied to the above-described zone ECU 12 is shown. Figure 3 1 is an exploded perspective view showing a schematic structure of the area ECU 12. Figure 3 In the figure, the cover is simplified for convenience. In addition, a part of the electronic components mounted on the substrate is omitted. Figure 3 In FIG, a wiring harness and a connector connected to the area ECU 12 are also shown. Figure 4 It is a top plan view of the zone ECU 12 . Figure 5 It is along Figure 4 Cross-sectional view of line VV. Figure 6 This is a diagram showing an example of the relationship between the inserted portion of the SMD connector and the substrate connection terminal. Figure 6 In FIG, the inserted portion into which the substrate connection terminal is inserted is hatched. In addition, the number of substrate connection terminals and external connection terminals is not limited to Figure 3 、 Figure 4 as well as Figure 6 For convenience, a smaller number of roots are shown.

[0049] like Figure 3 、 Figure 4 as well as Figure 5 As shown, as an example, the regional ECU 12 of this embodiment includes a housing 20, a circuit board 30, an input / output module 40, and an internal retaining component 50. Hereinafter, the thickness direction of the circuit board 30 is referred to as the Z direction. Furthermore, a direction perpendicular to the Z direction is referred to as the X direction, and a direction perpendicular to both the Z direction and the X direction is referred to as the Y direction. Unless otherwise specified, the shape viewed from above in the Z direction, that is, the shape along the XY plane defined by the X and Y directions, is referred to as a planar shape. Sometimes, the view viewed from above in the Z direction is simply referred to as a top view. Furthermore, each circuit denoted by a reference numeral may be componentized or integrated into an integrated circuit (IC) as a circuit unit, or may be integrated into an integrated circuit (IC) by combining multiple circuits.

[0050] The housing 20 houses the other components that make up the regional ECU 12. It houses the circuit board 30, the majority of each of the input / output module 40, and the internal retaining component 50. The housing 20 can be configured, for example, to include multiple components. As an example, the housing 20 of this embodiment is configured to be divisible in the Z direction. The housing 20 includes an outer shell 21 and a cover 22. Assembling the outer shell 21 and the cover 22 creates the housing 20, which provides a storage space. The outer shell 21 and the cover 22 can be assembled using known methods, such as snap-fit ​​connections, screw fastening, and heat caulking.

[0051] The housing 20 is, for example, roughly rectangular. The outer shell 21 is box-shaped with one side open. The housing 21 has an upper wall 211 that faces the circuit board 30 in the Z direction, and a side wall 212 connected to the upper wall 211. The upper wall 211 constitutes the upper wall (top wall) of the housing 20, and the side wall 212 constitutes the side wall of the housing 20. The side wall 212 is cylindrical and extends in the Z direction, with one end in the Z direction connected to the upper wall 211 along the entire circumference. The other end of the side wall 212 is in a shape that can be fixed to the cover 22, such as a flange.

[0052] The housing 21 has a connector housing 213 and a socket 214. The connector housing 213 and the socket 214 are provided on the upper wall 211. The connector housing 213 is connected to the upper wall 211 and extends from the upper wall 211 in a direction opposite to the side wall 212. The connector housing 213 is configured to surround the socket 214 when viewed from above. The socket 214 penetrates the upper wall 211 in the Z direction. Sometimes the socket 214 is referred to as an opening, a through hole, etc. The connector housing 213, together with the external connection terminal 43 exposed to the outside through the socket 214, constitutes a male connector. The housing 21 has four sockets 214 and four connector housings 213 that independently surround the sockets 214. The connector has four connector ports.

[0053] like Figure 5 As shown, a female connector 81 is provided at the end of the wire harness 80. By fitting the housing of the connector 81 into the connector housing 213, the external connection terminals 43 are connected to the terminals of the connector 81, thereby electrically connecting the zone ECU 12 to the wire harness 80.

[0054] The cover 22 covers the opening of the housing 21. The shape of the cover 22 can be, for example, a roughly flat plate or a box with one side open. A recess or a protrusion can also be partially provided on the flat plate-shaped cover 22. As an example, the cover 22 of this embodiment is in the shape of a box with one side open and a shallow bottom. The cover 22 has a bottom wall 221 that is opposite to the circuit substrate 30 in the Z direction, and a side wall 222 connected to the bottom wall 221. The bottom wall 221 constitutes the bottom wall of the housing 20, and the side wall 222 constitutes the side wall of the housing 20 together with the side wall 212. The side wall 222 is in the shape of a tube extending in the Z direction, and one end in the Z direction is connected to the bottom wall 221 along the entire circumference. The other end of the side wall 222 is in a shape that can be fixed to the housing 21, for example, in the shape of a flange.

[0055] The cover 22 includes support portions 223 that support the circuit board 30 at predetermined positions within the housing 20. The support portions 223 are provided at multiple locations relative to the bottom wall 221 to support the circuit board 30 from the rear surface 31b. The support portions 223 protrude from the inner surface of the bottom wall 221 in the Z direction. As an example, the support portions 223 are provided at four locations relative to the bottom wall 221 to support the four corners of the circuit board 30.

[0056] The housing 20 of the above-described structure is constructed from resin and / or metal. For example, the outer shell 21 and the cover 22 may both be resin molded bodies, or both may be metal molded bodies such as those produced by aluminum die-casting. Alternatively, one of the outer shell 21 and the cover 22 may be a resin molded body, and the other a metal molded body. As an example, in this embodiment, the outer shell 21 is a resin molded body, and the cover 22 is a metal molded body.

[0057] Furthermore, a sealing material may be provided to provide a waterproofing function to the housing 20. For example, the sealing material is provided between the fixed portion of the housing 21 and the fixed portion of the cover 22, in other words, in the area facing the flange. For example, the sealing material is provided in the housing 21 to close the socket 214. The portion of the external connection terminal 43 that protrudes from the sealing material is connected to the terminal of the connector 81.

[0058] The circuit board 30 includes a printed circuit board 31, electronic components 32, and an SMD connector 33. The printed circuit board 31 is sometimes referred to as a wiring board, a printed wiring board, or the like. The printed circuit board 31 has, for example, a generally rectangular planar shape. As an example, the printed circuit board 31 of this embodiment has a generally rectangular planar shape with the X direction as the longitudinal direction and the Y direction as the transverse direction.

[0059] The printed circuit board 31 includes an insulating substrate and wiring. The insulating substrate is formed using an electrically insulating material such as resin. The wiring is arranged on the insulating substrate. The wiring includes at least a conductor pattern. For example, a metal foil is patterned to form the conductor pattern. The conductor pattern can be arranged only on at least one of the one side 31a and the back side 31b of the printed circuit board 31, or can be further arranged inside the insulating substrate. The printed circuit board 31 can be a single-sided substrate, a double-sided substrate, or a multi-layer substrate including three or more layers of conductor patterns. The back side 31b is the surface opposite to the one side 31a in the Z direction.

[0060] Wiring may also include via conductors. Via conductors are formed in through-holes (vias) formed in the insulating layer of the insulating substrate, where a conductor such as a metal plating layer is disposed. Via conductors electrically connect conductor patterns on different layers. Wiring may include pads. For example, pads may include surface mount pads disposed as part of the conductor pattern on the surface of the insulating substrate. For example, pads may include through-hole pads for insert mounting disposed on the wall of a through-hole penetrating the insulating substrate.

[0061] Electronic components 32 are mounted on the printed circuit board 31. The electronic components 32 are electrically connected to corresponding pads, for example, by soldering. Together with the wiring of the printed circuit board 31, the electronic components 32 form a circuit. The circuit board 30 includes a plurality of electronic components 32. These components 32 are arranged on at least one surface 31a. As an example, in this embodiment, some of the electronic components 32 are arranged on one surface 31a, while others are arranged on the back surface 31b. In other words, electronic components 32 are arranged on both surfaces of the printed circuit board 31.

[0062] The electronic component 32 includes a processor and a power supply circuit. The processor constructs multiple functional units by accessing memory while executing control programs stored in the memory. The processor is sometimes referred to as an arithmetic processing unit, etc. The power supply circuit supplies power for operation to other circuit elements of the regional ECU 12. The power supply circuit supplies power for operation to the device 13 connected to the regional ECU 12 in a communicative manner. The power supply circuit is a constant voltage power supply that generates a constant voltage lower than the supply voltage based on the voltage supplied from a power supply device such as a battery. The power supply circuit is sometimes referred to as an internal power supply circuit. A single power supply circuit can generate a single constant voltage or multiple different constant voltages.

[0063] As an example, the electronic component 32 of this embodiment includes a microcomputer 321 and power supply circuits 322 and 323. The microcomputer 321 has a CPU (processor), RAM (memory), ROM (storage), etc. ROM is an abbreviation for Read Only Memory. The microcomputer 321 is sometimes referred to as a processor module, a processor device, etc. The microcomputer 321 is arranged on one side 31a. The power supply circuit 322 is a primary power supply circuit, and the power supply circuit 323 is a secondary power supply circuit. The power supply circuit 322 receives power from a battery via a connector and an input / output module 40. Based on the power supplied from the battery, the power supply circuit 322 generates a constant voltage lower than the power supply voltage. Based on the output of the power supply circuit 322, the power supply circuit 323 generates a constant voltage lower than the generated voltage of the power supply circuit 322. The power supply circuit 322 is arranged on one side 31a, and the power supply circuit 323 is arranged on the back side 31b. The power supply circuits 322 and 323 are each mounted on the printed circuit board 31 as a power supply IC, for example.

[0064] The SMD connector 33 is disposed on one side 31a of the printed circuit board 31. The SMD connector 33 is electrically connected to the pads of the printed circuit board 31, for example, by soldering. The SMD connector 33 has an inserted portion 331 into which terminals are inserted. Inserted portion 331 is a so-called socket contact. The substrate connection terminals 42 of the input / output module 40 are inserted into the inserted portion 331. Insertion of the substrate connection terminals 42 into the inserted portion 331 electrically connects the input / output module 40 to the circuit board 30. The substrate connection terminals 42 are pluggable and removable relative to the SMD connector 33.

[0065] As an example, the circuit board 30 of this embodiment has four SMD connectors 33. The circuit board 30 has the same number of SMD connectors 33 as the input / output modules 40. Each SMD connector 33 has multiple insertion portions 331. When viewed from above, the SMD connector 33 has multiple insertion portions 331 arranged in the Y direction, with the Y direction being the longitudinal direction. The multiple SMD connectors 33 are arranged side by side in the X direction, which is the transverse direction. Two of the four SMD connectors 33 are arranged at one end of the printed circuit board 31 in the X direction, and the other two are arranged at the other end. An electronic component 32 is arranged between the two SMD connectors 33 and the other two SMD connectors 33.

[0066] like Figure 6As shown, the circuit board 30 has a greater number of inserted portions 331 than the number of substrate connection terminals 42 of the input / output module 40. The SMD connector 33 has a greater number of inserted portions 331 than the number of substrate connection terminals 42 of the corresponding input / output module 40. This allows replacement with an input / output module 40 having a greater number of terminals. Of course, replacement with an input / output module 40 having a smaller number of terminals is also possible. The inserted portions 331 are provided to provide a margin for the number of input / output modules 40 that can be inserted.

[0067] The printed circuit board 31 has fixing holes 34 for fixing the inner holding member 50 to the housing 20. As an example, the fixing holes 34 of the present embodiment are provided at four corners of the printed circuit board 31.

[0068] The input / output module 40 provides input / output functions within the regional ECU 12. The input / output module 40 is a module that separates the input / output functions from the circuit board 30 and modularizes them. The regional ECU 12 includes at least one input / output module 40. As an example, the regional ECU 12 of this embodiment includes multiple (four) input / output modules 40. The input / output modules 40 include an input / output module 401, an input / output module 402, an input / output module 403, and an input / output module 404.

[0069] The connection destinations of each input / output module 40 are not particularly limited. For example, multiple input / output modules 40 may be divided according to the connection destination. Specifically, they may be divided according to the battery (power supply), the central ECU 11, other regional ECUs 12, and the corresponding regional equipment 13. Multiple input / output modules 40 may also be divided according to the location of the connection destination. Alternatively, a single input / output module 40 may be connected to at least one of the central ECU 11, other regional ECUs 12, and the corresponding regional equipment 13, as well as the battery. Alternatively, a single input / output module 40 may be connected to two or more of the central ECU 11, other regional ECUs 12, and the equipment 13.

[0070] The input / output module 40 includes a main body 41, a plurality of substrate connection terminals 42, and a plurality of external connection terminals 43. The substrate connection terminals 42 and the external connection terminals 43 are formed using a metal material with excellent electrical conductivity, such as copper. The substrate connection terminals 42 protrude from the main body 41 and extend in a predetermined direction. The substrate connection terminals 42 are electrically connected to corresponding pads on the circuit substrate 30. The external connection terminals 43 extend from the main body 41 in a direction opposite to the substrate connection terminals 42. As described above, the external connection terminals 43 pass through the socket 214 of the housing 21 and are exposed within the connector housing 213, and can be connected to the terminals of the connector 81.

[0071] As an example, the substrate connection terminal 42 of this embodiment protrudes from the surface of the main body 41 opposite to the circuit substrate 30 and extends in the Z direction. The substrate connection terminal 42 extends toward the circuit substrate 30. A plurality of substrate connection terminals 42 included in one input / output module 40 are arranged in the Y direction. The external connection terminal 43 protrudes from the surface opposite to the surface of the main body 41 opposite to the circuit substrate 30 and extends in the Z direction. The external connection terminal 43 extends toward the upper wall 211 of the housing 21. A plurality of external connection terminals 43 included in one input / output module 40 are arranged in the Y direction. The input / output module 40 as a whole extends in the Z direction, that is, in the thickness direction of the circuit substrate 30. Hereinafter, the substrate connection terminal 42 and the external connection terminal 43 may sometimes be referred to simply as terminals 42 and 43.

[0072] The four input / output modules 40 are arranged in the X direction, similar to the SMD connectors 33. Two of the four input / output modules 40 are arranged at one end of the printed circuit board 31 in the X direction, and the other two are arranged at the other end. The external connection terminals 43 of the two input / output modules 40 arranged at one end are separated and exposed in two sockets 214 arranged in the Y direction. The external connection terminals 43 of the two input / output modules 40 arranged at the other end are separated and exposed in two other sockets 214 arranged in the Y direction.

[0073] The main body 41 includes a sealing member 411. The sealing member 411 seals the other components that make up the main body 41. The sealing member 411 is made of, for example, epoxy resin. The sealing member 411 is sometimes referred to as molded resin. The sealing member 411 forms the outer contour of the main body 41. The sealing member 411 is, for example, a common structure among multiple input / output modules 40. The outer contour of the main body 41, such as its shape and size, is common to all modules.

[0074] The main body 41 of the input / output module 40, which communicates with at least one of the central ECU 11, other regional ECUs 12, and the corresponding regional device 13, includes a printed circuit board 412, an input / output circuit 413, and a communication circuit 414. The main body 41 of the input / output module 40, which communicates with the corresponding regional device 13, also includes a power distribution circuit 415.

[0075] Terminals 42 and 43 are connected to the printed circuit board 412. The input / output circuit 413 performs general input / output processing. The communication circuit 414 executes processing for communication with the central ECU 11, other regional ECUs 12, and the corresponding regional devices 13. For example, the communication circuit 414 converts electrical signals for communication in accordance with a predetermined protocol. For example, the communication circuit 414 switches the communication destination based on instructions from the microcomputer 321.

[0076] As an example, the input / output module 401 has a communication circuit 414C for CAN as the communication circuit 414. The input / output module 402 has a communication circuit 414E for ETHERNET as the communication circuit 414. The communication circuit 414C is sometimes referred to as a CAN transceiver. The communication circuit 414C enables bidirectional communication by converting the electrical characteristics between the communication bus (wiring harness 80) and the microcomputer 321. The communication circuit 414E has the function of a PHY or a switch. The PHY converts analog signals used for communication in accordance with the Ethernet standard into digital signals of the MAC. MAC is the abbreviation for Media Access Controller.

[0077] For example, Figure 5 As indicated by the dashed arrow, commands from the central ECU 11 are processed in the input / output module 402, converted from the Ethernet protocol to the CAN protocol in the microcomputer 321, and transmitted to the corresponding device 13 via the input / output module 401. Furthermore, when communication is performed between the regional ECUs 12 and the devices 13 in accordance with LIN, one of the input / output modules 40 includes a LIN communication circuit 414 (not shown).

[0078] The power distribution circuit 415 distributes the power supplied from the battery to the corresponding plurality of devices 13. The power distribution circuit 415 can distribute a portion of the power supplied from the battery directly or indirectly via the power supply circuits 322 and 323. For example, the input / output modules 401 and 403 include the power distribution circuit 415. In a configuration where the input / output module 402 communicates with the device 13, the power distribution circuit 415 is also provided in the input / output module 402.

[0079] The input / output module 40 that receives power from a battery has a busbar 416 and a reverse connection protection circuit 417. As an example, the input / output module 404 has a busbar 416 and a reverse connection protection circuit 417. The input / output module 404 is equivalent to a power module. The busbar 416 is a metal plate. Most of the busbar 416 is sealed by a sealing body 411, and the parts protruding from the sealing body 411 constitute terminals 42 and 43. The terminals 42 and 43 of the busbar 416 are electrically connected to the battery. In the figure, P or N is added to the end of the terminals 42 and 43 that are electrically connected to the battery. Terminals 42P and 43P are terminals of the busbar 416 connected to the positive pole of the battery. Terminals 42N and 43N are terminals of the busbar 416 connected to the negative pole of the battery.

[0080] A high current, for example, exceeding 60A, flows through terminals 42N, 42P, 43N, and 43P. Therefore, a busbar 416 is used that has a longer diameter than the other terminals 42 and 43, that is, a larger cross-sectional area than the other terminals 42 and 43. As an example, an input / output module 404 includes terminals of the longer-diameter busbar 416 and the other terminals 42 and 43 that have shorter diameters.

[0081] Reverse connection protection circuit 417 protects the circuitry of the regional ECU 12 if the battery is mistakenly connected in reverse polarity. Examples of reverse connection protection circuit 417 include a reverse connection protection diode or a MOSFET with a built-in PN diode. Reverse connection protection circuit 417 is located in the current path of busbar 416. MOSFET stands for Metal Oxide Semiconductor Field Effect Transistor.

[0082] The input / output module 40 may also include a current monitoring circuit 418. This circuit monitors the current and, if the current exceeds a threshold, disconnects a semiconductor switch such as a MOSFET to cut off the power supply. This can suppress smoke from the wiring harness 80. The current monitoring circuit 418 can be installed in the input / output module 40, particularly where high current flows. In this embodiment, the current monitoring circuit 418 is installed in the power path of the busbar 416. The current monitoring circuit 418 can also be installed in the power path of the power distribution circuit 415.

[0083] The printed circuit board 412 , the input / output circuit 413 , the communication circuit 414 , the power distribution circuit 415 , most of the bus bar 416 , the reverse connection protection circuit 417 , and the current monitoring circuit 418 are sealed by the sealing body 411 .

[0084] The internal retaining member 50 is disposed within the housing 20, that is, within the storage space. The internal retaining member 50 is directly or indirectly fixed to the housing 20. As an example, the internal retaining member 50 of this embodiment includes a fixing portion 51. The fixing portion 51 passes through the fixing hole 34 of the circuit board 30 and is screwed to the cover 22.

[0085] The internal retaining member 50 has a socket 52 for receiving the input / output module 40. The input / output module 40 is inserted into the socket 52. When the input / output module 40 is connected to the circuit board 30, the main body 41 is disposed within the socket 52. The internal retaining member 50 retains the input / output module 40 within the socket 52. The internal retaining member 50 is formed, for example, from a resin material and / or a metal material.

[0086] The number of input-output modules 40 held in each socket 52 is not particularly limited. One input-output module 40 can be configured in one socket 52, or multiple input-output modules 40 can be configured in one socket 52. As an example, the internal retaining component 50 of this embodiment has the same number of sockets 52 as the input-output modules 40. Corresponding input-output modules 40 are independently configured in the sockets 52. The sockets 52 extend in the Z direction and have upper and lower openings in the internal retaining component 50, which is a roughly rectangular parallelepiped. At least a portion of the substrate connection terminal 42 is located below the lower surface of the internal retaining component 50, that is, on the circuit substrate 30 side. At least a portion of the external connection terminal 43 is located above the upper surface of the internal retaining component 50 and is configured in the connector housing 213. In this embodiment, the housing 20 and the internal retaining component 50 are equivalent to a retaining component having a socket.

[0087] <Summary of the First Embodiment>

[0088] In the regional ECU 12 (vehicle control unit) of this embodiment, an input / output module 40 is provided separately from the circuit board 30. In other words, the input / output functions are separated from the underlying circuit board 30. By replacing the input / output module 40 according to the vehicle model, specifications, etc., the input / output functions of the regional ECU 12 can be easily modified. For example, multiple types of input / output modules 40 can be prepared in advance and used selectively according to the vehicle model and specifications, eliminating the need to constantly change the input / output design. By changing the input / output module 40, the number of substrate connection terminals 42 and external connection terminals 43, or the number of input / output pins, can be easily changed.

[0089] The regional ECU 12 only needs to include a circuit board 30 having at least a microcomputer 321 (processor) and power supply circuits 322 and 323, an input / output module 40, and a power distribution circuit 415. As an example, the regional ECU 12 of this embodiment includes a housing 20 having a socket 214 on its upper wall 211. External connection terminals 43 of the input / output module 40 are held within the socket 214 and can be connected to external devices. The external connection terminals 43, together with the housing 20, form a connector. Thus, by replacing the input / output module 40 held in the socket 214, the connector specifications can be changed.

[0090] As an example, the zone ECU 12 of this embodiment includes an internal retaining member 50 having a socket 52. The main body 41 of the input / output module 40 is retained within the socket 52. This allows easy modification of input / output functions by replacing the input / output module 40 inserted into the socket 52. Furthermore, the internal retaining member 50 stably holds the input / output module 40 within the housing 20.

[0091] The regional ECU 12 includes a communication circuit 414. The regional ECU 12 may include multiple communication circuits 414 for a single system, or multiple communication circuits 414 of a single type. As an example, the regional ECU 12 of this embodiment includes multiple communication circuits 414. This allows the regional ECU 12 to relay communications between multiple systems. For example, the regional ECU 122 can relay communications between the cockpit system and the ADAS system. As an example, the regional ECU 12 of this embodiment includes multiple types of communication circuits 414. For example, the regional ECU 12 includes at least two of the following: a CAN communication circuit 414C, an Ethernet communication circuit 414E, and a LIN communication circuit. This allows the regional ECU 12 to relay communications between different protocols.

[0092] The device 13 corresponding to the regional ECU 12 may be a single device or multiple redundant devices. For example, the processor, or microcomputer 321, of the regional ECU 12 in this embodiment performs input and output operations for multiple devices 13 with different functions. In other words, multiple devices 13 with different functions are electrically connected to the external connection terminals 43. This allows the regional ECU 12 to relay communications between these multiple devices 13. For example, these multiple devices 13 may be ECUs 131 and actuators 132 of the same system. For example, these multiple devices 13 may be ECUs 131 of different systems. These multiple devices 13 may be at least two of the body ECU 131B, powertrain ECU 131P, cockpit ECU 131C, and ADAS ECU 131A.

[0093] The number of inserted portions in the circuit substrate 30 into which the substrate connection terminals 42 are inserted can also be changed as the input / output module 40 is changed, that is, the substrate connection terminals 42 are changed. As an example, the circuit substrate 30 of this embodiment has more inserted portions 331 than the number of substrate connection terminals 42. Figure 6 As shown, the inserted portion 331 is slightly larger to allow for margin, taking into account the specifications and vehicle models to be used. Thus, even if the number of substrate connection terminals 42 varies depending on the specifications and vehicle models, the inserted portion 331, and therefore the circuit substrate 30, does not need to be changed. This allows for easy changes in the number of terminals.

[0094] The regional ECU 12 includes a power supply module electrically connected to the battery (onboard power supply) as an input / output module 40. As an example, the regional ECU 12 of this embodiment includes an input / output module 404 as a power supply module. Furthermore, the diameters of the substrate connection terminals 42N and 42P connected to the battery are longer than those of the other substrate connection terminals 42. Furthermore, the diameters of the external connection terminals 43N and 43P connected to the battery are longer than those of the other external connection terminals 43. This makes it suitable as a regional ECU 12 with a power distribution function. It is particularly well-suited for regional ECUs 12 handling currents exceeding a maximum DC current of 60A (high current).

[0095] The placement of the input / output module 40 relative to the circuit substrate 30 is not particularly limited. For example, the input / output module 40 may be placed approximately parallel to the circuit substrate 30. As an example, in this embodiment, the input / output module 40 extends in a direction intersecting one surface 31a of the circuit substrate 30. This makes it possible to suppress, for example, an increase in the size of the regional ECU 12 in a direction perpendicular to the Z direction. In particular, in this embodiment, the input / output module 40 extends approximately parallel to the thickness direction of the circuit substrate 30, i.e., the Z direction. This enhances the effect of suppressing size increase. Furthermore, the input / output module 40 can be easily replaced.

[0096] The regional ECU 12 only needs to include at least one input / output module 40. For example, it may also include only one input / output module 40. As an example, the regional ECU 12 of this embodiment includes multiple input / output modules 40. This allows for greater freedom in input / output design compared to a configuration where the modules are integrated into a single input / output module.

[0097] To provide gateway and power distribution functions, the regional ECU 12 includes input / output circuits 413, communication circuits 414, and power distribution circuits 415. At least one of these circuits 413, 414, and 415 can be mounted on the circuit board 30. As an example, in the regional ECU 12 of this embodiment, the input / output circuits 413, communication circuits 414, and power distribution circuits 415 are provided in any one of the multiple input / output modules 40. For example, the input / output circuits 413, communication circuits 414, and power distribution circuits 415 are provided in the input / output modules 401 and 403. At least the input / output circuits 413 and communication circuits 414 are provided in the input / output module 402. By providing the input / output circuits 413, communication circuits 414, and power distribution circuits 415 in the input / output modules 40, the communication and power distribution functions can be easily modified by replacing the input / output modules 40.

[0098] In the regional ECU 12, the wiring harness 80 is connected to the external connection terminal 43. As an example, the regional ECU 12 of this embodiment includes a current monitoring circuit 418 in the input / output module 40. Current monitoring circuit 418 is provided, for example, in the current path of busbar 416. Current monitoring circuit 418 monitors the current flowing through busbar 416 and, when the current exceeds a threshold, turns off the semiconductor switch, shutting off the current. This prevents smoke from the wiring harness 80.

[0099] The connection structure (mounting structure) between the circuit substrate 30 and the substrate connection terminals 42 is not particularly limited. As an example, in the regional ECU 12 of this embodiment, the substrate connection terminals 42 are inserted into the insertion portion 331 of the SMD connector 33 and electrically connected to the circuit substrate 30. The substrate connection terminals 42 are pluggable and removable relative to the circuit substrate 30. This allows, for example, even when rewriting (over-the-air) a program using OTA technology, the input / output functions can be changed by replacing the input / output module 40 at a dealership. OTA stands for Over-the-Air (OTA).

[0100] Modifications

[0101] Although the example in which the zone ECU 12 includes the internal holding member 50 is shown, the present invention is not limited thereto. Figure 7 As shown, a structure excluding the internal holding member 50 is also possible. Figure 7 and Figure 5 In this structure, the external connection terminal 43 is held in the socket 214 of the housing 20 (shell 21). The housing 20 corresponds to the holding member. Figure 7 In the illustrated configuration, the accommodation space of the housing 20 may be filled with gel or potting resin in consideration of heat dissipation, connection reliability, and the like.

[0102] As a configuration in which the substrate connection terminal 42 can be plugged in and out of the circuit substrate 30, an example using the SMD connector 33 is shown, but the present invention is not limited thereto. Figure 8 As shown, fisheye (Press fit) terminals can also be used as substrate connection terminals 42. Figure 8 and Figure 5 The mounting structure of the input / output module 40 shown in FIG. 3 corresponds to the mounting structure of the input / output module 40 shown in FIG. 3. The circuit substrate 30 (printed circuit substrate 31) has a through hole 311 extending in the Z direction and a through hole pad 312 formed on the wall of the through hole 311. The substrate connection terminal 42 is inserted into the through hole 311 and electrically connected to the through hole pad 312 by contact with the reaction force of elastic deformation. Figure 8 In the embodiment, a pinhole-shaped fisheye terminal is used, but the present invention is not limited to this shape.

[0103] Alternatively, the substrate connection terminals 42 may be soldered to the circuit substrate 30 instead of being pluggable. Figure 9 As shown, an insert installation structure can also be adopted. Figure 9 and Figure 8 The substrate connection terminal 42 is inserted into the through hole 311 and is bonded to the through hole pad 312 by the solder 35. This improves the connection reliability between the input / output module 40 and the circuit substrate 30.

[0104] The number, position and planar shape of the connector housing 213 in the housing 20 are not limited to the above examples. They can be appropriately set in consideration of the connection object. Figure 10 As shown, the structure may also include two connector housings 213 . Figure 10 and Figure 4 The external connection terminals 43 of the two input / output modules 40 disposed on one end of the printed circuit board 31 are exposed from one of the sockets 214. The external connection terminals 43 of the two input / output modules 40 disposed on the other end are exposed from the other of the sockets 214. Figure 10 In FIG. 4 , the input / output module 404 is used as a module dedicated to power supply, and the external connection terminals 43 only include external connection terminals 43N and 43P connected to the battery.

[0105] (Second embodiment)

[0106] This embodiment is a modified example based on the previous embodiment, and the description of the previous embodiment can be referenced. The previous embodiment shows an example of replacing input / output modules according to vehicle model and specifications. This example can also be replaced, or the number of input / output modules can be increased or decreased.

[0107] Figure 11 It is a top plan view showing the zone ECU 12 according to the present embodiment. Figure 11 and Figure 4 correspond. Figure 11 The two-dot chain lines shown represent vacancies (blanks) in the input / output modules 40 . Figure 12 It is along Figure 11 A cross-sectional view taken along line XII-XII. Figure 12 and Figure 5 correspond.

[0108] like Figure 11 as well as Figure 12 As shown, the regional ECU 12 can be equipped with a maximum of six input / output modules 40. Figure 11 as well as Figure 12In the example shown, the regional ECU 12 includes four input / output modules 40. The connector housing 213 and the socket 214 are provided to correspond to each of the three input / output modules 40. The circuit board 30 is configured to be connectable to the six input / output modules 40. As an example, the circuit board 30 includes six SMD connectors 33. The SMD connectors 33 have the same number of inserted portions 331 as the number of substrate connection terminals 42 of the corresponding input / output modules 40.

[0109] The internal holding member 50 has six sockets 52. Four of the six sockets 52 are inserted into the input / output modules 40, and the remaining two become vacant areas (blanks). The other configurations are similar to those described in the previous embodiment (see Figure 4 as well as Figure 5 )same.

[0110] <Summary of Second Embodiment>

[0111] In this embodiment, as in the previous embodiment, input / output modules 40 are provided separately from the circuit board 30. Furthermore, the number of input / output modules 40 can be increased or decreased depending on the vehicle model, specifications, and other factors. This allows for easy modification of the input / output functions of the zone ECU 12 by adding or removing input / output modules 40. This eliminates the need to modify the input / output design each time. By adding or removing input / output modules 40, the number of board connection terminals 42 and external connection terminals 43, or the number of input / output pins, can be easily adjusted.

[0112] For example, the input / output modules 40 having the basic unit circuit may be prepared in advance, and the number of the input / output modules 40 to be inserted into the sockets 52 may be changed according to the vehicle model and specifications.

[0113] The configuration described in this embodiment can be combined with the configurations described in the previous embodiment and the modified example. For example, replacement (change) and addition / reduction of the input / output module 40 can also be combined.

[0114] (Other Embodiments)

[0115] The disclosure in this specification and the drawings is not limited to the illustrated embodiments. The disclosure includes the illustrated embodiments and variations made by those skilled in the art based on these embodiments. For example, the disclosure is not limited to the combination of parts and / or elements shown in the embodiments. The disclosure can be implemented in a variety of combinations. The disclosure can have additional parts that can be added to the embodiments. The disclosure includes embodiments in which parts and / or elements of the embodiments are omitted. The disclosure includes the replacement or combination of parts and / or elements between one embodiment and another embodiment. The technical scope of the disclosure is not limited to the description of the embodiments. It should be understood that some technical scopes of the disclosure are shown according to the description of the claims and include all changes within the meaning and scope equivalent to the description of the claims.

[0116] The disclosures in the specification, drawings, and other aspects are not limited by the claims. The disclosures in the specification, drawings, and other aspects encompass the technical concepts described in the claims and encompass a wider range of technical concepts than those described in the claims. Therefore, various technical concepts can be extracted from the disclosures in the specification, drawings, and other aspects, without being limited to the claims.

[0117] When a feature or layer is referred to as being "on," "connected," "connected," or "bonded to," there are instances where it is directly connected, connected, or bonded to other features or layers, and there are instances where intervening features or layers exist. In contrast, when a feature is referred to as being "directly on," "directly connected," "directly connected," or "directly bonded" to another feature or layer, there are no intervening features or layers. Other terms used to describe the relationship between features should be interpreted in the same manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used in this specification, the term "and / or" includes any and all combinations of the associated listed one or more items.

[0118] In order to facilitate the description of the relationship of an element or feature relative to other elements or features as shown in the figure, spatially relative terms such as "inside", "outside", "back", "bottom", "low", "top", "high" and the like are used here. In addition to the directions depicted in the drawings, spatially relative terms can also include different directions of the device in use or operation. For example, if the device in the figure is turned over, the element described as "below" or "directly below" other elements or features turns to "above" other elements or features. Therefore, the term "below" can include both the directions of top and bottom. The device can also be oriented in other directions (it can also be rotated to 90 degrees or other directions), and the spatially relative descriptors used in this specification are interpreted accordingly.

[0119] As a processor, an example of a CPU included in the microcomputer 321 is shown, but the present invention is not limited to this. MPU, GPU, DFP, etc. can be used. MPU is the abbreviation of Micro-Processing Unit. GPU is the abbreviation of Graphics Processing Unit. DFP is the abbreviation of Data Flow Processor. In addition, SoC can be used instead of microcomputer 321. SoC is the abbreviation of System on Chip. ASIC, FPGA, etc. can also be used. ASIC is the abbreviation of Application Specific Integrated Circuit. FPGA is the abbreviation of Field-Programmable Gate Array.

[0120] The control program can also be stored as computer-executable instructions on a non-transitory tangible storage medium that can be read by the computer. Program storage media can include HDDs, SSDs, and flash memory. HDD stands for Hard Disk Drive. SSD stands for Solid State Drive.

[0121] (Disclosure of technical ideas)

[0122] This specification discloses multiple technical concepts described in the following multiple items. Some items are described by selectively citing a preceding item in a multiple dependent form in a subsequent item. In addition, some items are described by referring to another multiple dependent form in a multiple dependent form. These items described in multiple dependent forms define multiple technical concepts.

[0123] Technical Concept 1

[0124] A vehicle control unit having a gateway function, comprising:

[0125] A circuit substrate (30) having a processor (321) and power supply circuits (322, 323);

[0126] An input / output module (40) has a plurality of substrate connection terminals (42) and a plurality of external connection terminals (43) electrically connected to external devices, and provides input / output functions for the circuit substrate; and

[0127] A power distribution circuit (415) distributes power,

[0128] The substrate connection terminal is electrically connected to the circuit substrate.

[0129] Technical Thought 2

[0130] The vehicle control unit according to the technical idea 1 comprises: a holding component (20, 50) having a socket (214, 52) and holding the input / output module;

[0131] The input / output module is provided corresponding to the socket, and a portion of the input / output module is retained in the corresponding socket.

[0132] The external connection terminal can be connected to the external device through the corresponding socket.

[0133] Technical Thought 3

[0134] According to the vehicle control unit described in Technical Idea 2, the holding component includes a housing (20) for accommodating the circuit substrate.

[0135] The housing has the socket (214) on the upper wall facing the circuit substrate.

[0136] The external connection terminals are held in the corresponding sockets of the housing.

[0137] Technical Concept 4

[0138] According to the vehicle control unit described in Technical Idea 2 or Technical Idea 3, the substrate connection terminal and the external connection terminal extend from the main body (41) of the input / output module.

[0139] The holding member includes an inner holding member (50) housed in the housing together with the circuit substrate.

[0140] The main body of the input / output module is inserted into the corresponding socket (52) of the internal holding component.

[0141] Technical Thought 5

[0142] According to any one of the technical concepts 1 to 4, the vehicle control unit includes a plurality of communication circuits (414).

[0143] Technical Thought 6

[0144] According to any one of technical concepts 1 to 5, the vehicle control unit includes a plurality of types of communication circuits (414).

[0145] Technical Thought 7

[0146] According to the vehicle control unit described in the sixth technical idea, at least two of a CAN circuit, an ETHERNET circuit, and a LIN circuit are provided as the plurality of types of communication circuits.

[0147] Technical Thought 8

[0148] According to the vehicle control unit described in any one of technical concepts 1 to 7, the processor performs input and output to a plurality of devices having different functions.

[0149] Technical Thought 9

[0150] According to the vehicle control unit described in any one of the technical concepts 1 to 7, a plurality of devices having different functions are electrically connected to the external connection terminal.

[0151] Technical Thought 10

[0152] According to the vehicle control unit described in Technical Idea 8 or Technical Idea 9, the plurality of devices are at least two of the body ECU (131B), the powertrain ECU (131P), the cockpit ECU (131C), and the ADASECU (131A).

[0153] Technical Thought 11

[0154] According to the vehicle control unit described in any one of technical concepts 1 to 10, the circuit substrate has a plurality of inserted portions (331, 311) for electrically connecting the substrate connection terminals to the circuit substrate by inserting the substrate connection terminals.

[0155] The number of the inserted portions is greater than the number of the substrate connection terminals.

[0156] Technical Thought 12

[0157] According to the vehicle control unit described in any one of technical concepts 1 to 11, the input / output module includes a power supply module (404) electrically connected to the battery,

[0158] The diameter of the substrate connection terminal connected to the battery is longer than the diameters of the other substrate connection terminals, and the diameter of the external connection terminal connected to the battery is longer than the diameters of the other external connection terminals.

[0159] Technical Thought 13

[0160] According to the vehicle control unit described in the technical idea 12, the power supply module supports a DC current of a maximum of 60A or more.

[0161] Technical Thought 14

[0162] According to the vehicle control unit according to any one of technical concepts 1 to 13, the input / output module extends in a direction intersecting with a mounting surface of the processor on the circuit board.

[0163] Technical Thought 15

[0164] According to any one of technical concepts 1 to 14, the vehicle control unit includes a plurality of the input / output modules.

[0165] Technical Thought 16

[0166] According to the vehicle control unit described in technical idea 15, the input / output circuit (413), the power distribution circuit, and the communication circuit (414) are respectively provided in any one of the plurality of input / output modules.

[0167] Technical Thought 17

[0168] According to the vehicle control unit described in any one of technical concepts 1 to 16, a wire harness (80) is connected to the external connection terminal.

[0169] Technical Thought 18

[0170] According to the vehicle control unit described in Technical Concept 17, the input / output module includes a current monitoring circuit (418) that monitors the current flowing through the wiring harness and disconnects the switch to cut off the power supply in the event of overcurrent.

[0171] Technical Thought 19

[0172] According to the vehicle control unit described in any one of technical concepts 1 to 18, the substrate connection terminal is connected to the circuit substrate in a pluggable manner.

[0173] Technical Thought 20

[0174] According to the vehicle control unit described in any one of technical concepts 1 to 18, the substrate connection terminal is soldered to the through-hole pad (312) of the circuit substrate.

Claims

1. A vehicle control unit having a gateway function, wherein: have: A circuit substrate (30) having a processor (321) and power supply circuits (322, 323); An input / output module (40) has a plurality of substrate connection terminals (42) and a plurality of external connection terminals (43) electrically connected to external devices, and provides input / output functions for the circuit substrate; and A power distribution circuit (415) distributes power, The substrate connection terminal is electrically connected to the circuit substrate.

2. The vehicle control unit according to claim 1, wherein: have: The holding component (20, 50) has a socket (214, 52) and holds the input and output module. The input / output module is provided corresponding to the socket, and a portion of the input / output module is retained in the corresponding socket. The external connection terminal can be connected to the external device through the corresponding socket.

3. The vehicle control unit according to claim 2, wherein: The holding component includes a housing (20) for accommodating the circuit substrate. The housing has the socket (214) on the upper wall facing the circuit substrate. The external connection terminals are held in the corresponding sockets of the housing.

4. The vehicle control unit according to claim 2 or claim 3, wherein: The substrate connection terminal and the external connection terminal extend from the main body (41) of the input / output module. The holding member includes an inner holding member (50) housed in the housing together with the circuit substrate. The main body of the input / output module is inserted into the corresponding socket (52) of the internal holding component.

5. The vehicle control unit according to claim 1, wherein: A communication circuit (414) having multiple systems.

6. The vehicle control unit according to claim 1, wherein: A plurality of types of communication circuits (414) are provided.

7. The vehicle control unit according to claim 6, wherein: The plurality of types of communication circuits include at least two of a CAN circuit, an ETHERNET circuit, and a LIN circuit.

8. The vehicle control unit according to claim 1, wherein: The processor performs input and output to a plurality of devices having different functions.

9. The vehicle control unit according to claim 1, wherein: A plurality of devices having different functions are electrically connected to the external connection terminals.

10. The vehicle control unit according to claim 8 or claim 9, wherein: The plurality of devices are at least two of the body ECU (131B), the powertrain ECU (131P), the cockpit ECU (131C), and the ADAS ECU (131A).

11. The vehicle control unit according to claim 1, wherein: The circuit substrate has a plurality of inserted portions (331, 312), and the plurality of inserted portions electrically connect the substrate connection terminals to the circuit substrate by inserting the substrate connection terminals. The number of the inserted portions is greater than the number of the substrate connection terminals.

12. The vehicle control unit according to claim 1, wherein: The input / output module includes a power supply module (404) electrically connected to the battery. The diameter of the substrate connection terminal connected to the battery is longer than the diameters of the other substrate connection terminals, and the diameter of the external connection terminal connected to the battery is longer than the diameters of the other external connection terminals.

13. The vehicle control unit according to claim 12, wherein: The power supply module described above supports a maximum DC current of 60A or more.

14. The vehicle control unit according to claim 1, wherein: The input / output module extends in a direction intersecting a mounting surface of the processor on the circuit board.

15. The vehicle control unit according to claim 1, wherein: It has a plurality of the above-mentioned input and output modules.

16. The vehicle control unit according to claim 15, wherein: The input / output circuit (413), the power distribution circuit, and the communication circuit (414) are respectively provided in any one of the plurality of input / output modules.

17. The vehicle control unit according to claim 1, wherein: A wiring harness (80) is connected to the external connection terminal.

18. The vehicle control unit according to claim 17, wherein: The input / output module includes a current monitoring circuit (418) for monitoring the current flowing through the wiring harness and disconnecting a switch to cut off power supply in the event of overcurrent.

19. The vehicle control unit according to claim 1, wherein: The substrate connection terminal is connected to the circuit substrate in a pluggable manner.

20. The vehicle control unit according to claim 1, wherein: The substrate connection terminal is soldered to the through hole pad (312) of the circuit substrate.

Images