JP2019189019A - Power supply system - Google Patents

Abstract

To provide a power supply system capable of suppressing an increase in item number.SOLUTION: A power supply system 10 includes: a first electric connection box 1 which has an input part 8 connected to a power source of a vehicle and an option connection part 7 for outputting electric power from the power source, and which is mounted as standard in the vehicle; and a second electric connection box 21 which is connected to the option connection part 7, which distributes the electric power supplied via the option connection part 7 from the power source to equipment 22 for use in automatic operation of the vehicle, and which is optionally mounted in the vehicle.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a power supply system.

  Conventionally, there is a technique for supplying electric power to a device mounted on a vehicle. Patent Document 1 includes a power supply trunk line that is connected to a power supply mounted on a vehicle and extends in the front-rear direction of the vehicle, and a power supply branch line that branches from the power supply trunk line and extends in a direction crossing the front-rear direction. The technology of the provided wire harness is disclosed.

JP 2017-185996 A

  Here, it is conceivable that a function for automatically driving the vehicle is installed as an option. A large number of devices are required for automatic operation. For this reason, when a device for automatic operation is mounted, it is necessary to additionally arrange a large number of circuits for supplying power as compared with the conventional option. As a result, there is a problem that the number of product numbers is likely to increase.

  An object of the present invention is to provide a power supply system that can suppress an increase in the number of product numbers.

  A power supply system according to the present invention includes an input unit connected to a power source of a vehicle, and an optional connection unit that outputs power from the power source, and includes a first electric power mounted as a standard in the vehicle. A connection box and a second unit that is connected to the option connection unit, distributes power supplied from the power source through the option connection unit to devices used for automatic driving of the vehicle, and is optionally mounted on the vehicle. And an electrical junction box.

  A power supply system according to the present invention includes an input unit connected to a power source of a vehicle and an optional connection unit that outputs power from the power source, and is a first electrical connection mounted on the vehicle as a standard A second electrical connection box that is connected to the box and connected to the optional connection, distributes the electric power supplied from the power source through the optional connection to equipment used for automatic driving of the vehicle, and is optionally mounted on the vehicle; Is provided.

  According to the power supply system of the present invention, the device used for automatic operation is connected to the optional connection portion of the first electrical connection box via the optional second electrical connection box. That is, the locations where the equipment used for automatic operation is connected to the power supply system mounted as standard are collected in the option connection section. Therefore, the power supply system according to the present invention has an effect of suppressing an increase in the number of product numbers.

FIG. 1 is a block diagram of a power supply system according to the first embodiment. FIG. 2 is a diagram illustrating a schematic configuration of the first electrical junction box according to the first embodiment. FIG. 3 is a diagram illustrating a configuration example of an optional device according to the second embodiment. FIG. 4 is a diagram illustrating another configuration example of the optional device according to the second embodiment. FIG. 5 is a block diagram of a connection configuration according to the second embodiment. FIG. 6 is an explanatory diagram of nodes. FIG. 7 is a block diagram of another connection form according to the second embodiment. FIG. 8 is a block diagram showing another connection form. FIG. 9 is a block diagram showing still another connection form. FIG. 10 is a schematic configuration diagram of a first electrical junction box according to the first modification. FIG. 11 is a diagram illustrating an example of a connection form of the electrical junction box according to the first modification.

  Hereinafter, a power supply system according to an embodiment of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

[First Embodiment]
The first embodiment will be described with reference to FIGS. 1 and 2. The present embodiment relates to a power supply system. FIG. 1 is a block diagram of a power supply system according to the first embodiment, and FIG. 2 is a diagram illustrating a schematic configuration of a first electrical junction box according to the first embodiment.

  As shown in FIG. 1, the power supply system 10 according to the embodiment is mounted on a vehicle 100. The power supply system 10 includes a first electrical connection box 1 and a second electrical connection box 21. The vehicle 100 is equipped with a battery 101 and a generator 102. The first electrical junction box 1, the electric wire 13, and the third electrical junction box 11 constitute a standard wire harness WH1. The standard wire harness WH1 further includes a connector and the like. The first electrical junction box 1 distributes the power supplied from the battery 101 to the devices mounted on the vehicle 100.

  The battery 101 is a power source of the vehicle 100 and is a chargeable power storage unit. The battery 101 according to the present embodiment is a secondary battery, and supplies power to a device mounted on the vehicle 100. The battery 101 of the present embodiment is an auxiliary battery that supplies electric power to the auxiliary machine. In addition to battery 101, vehicle 100 may include a traveling battery that supplies power for traveling of vehicle 100.

  The generator 102 stores the generated power in the battery 101. The generator 102 is, for example, an alternator, but is not limited to this. The generator 102 may perform regenerative power generation, or may be a power generation mechanism that converts sunlight or other energy into electric power.

  The standard wire harness WH1 is a wire harness that is mounted on the vehicle 100 as a standard. Various standard devices 12 are mounted on the vehicle 100. The standard device 12 is a device that is mounted on the vehicle 100 as a standard. That is, the standard device 12 is a device for which no option is set as to whether or not the device is mounted on the vehicle 100. The standard device 12 includes a first device 12A, a second device 12B, and a third device 12C. The standard equipment 12 includes equipment necessary for driving operation by the driver. The first device 12A may include a braking device. The second device 12B may include a drive device that drives a power source such as an engine. The third device 12C may include a steering device.

  The first electrical junction box 1 is a so-called relay box, and includes a relay and a fuse. The first electrical junction box 1 is connected to a battery 101 via an electric wire 13. The first electrical junction box 1 of the present embodiment is the battery 101 most among the first electrical junction box 1, the second electrical junction box 21, and the third electrical junction box 11 mounted on the vehicle 100. close. That is, the first electrical junction box 1 is an electrical junction box located on the most upstream side in the power supply system from the battery 101 to the auxiliary machine. The first electric connection box 1 distributes the electric power supplied from the battery 101 to the third electric connection box 11 and the second electric connection box 21.

  The third electrical junction box 11 is connected to the battery 101 via the first electrical junction box 1. The third electrical junction box 11 is a so-called junction box. The third electrical junction box 11 distributes the power supplied from the first electrical junction box 1 to the standard device 12. The third electrical junction box 11 has, for example, a plurality of fuses corresponding to individual devices constituting the standard device 12. The fuse of the third electrical junction box 11 may be a fusing fuse or an electronic fuse. The third electrical junction box 11 may be divided into a plurality of electrical junction boxes corresponding to the first device 12A, the second device 12B, and the third device 12C.

  The option wire harness WH2 is a wire harness that is optionally mounted on the vehicle 100. An optional device 22 is mounted on the vehicle 100 of the present embodiment. The optional device 22 of this embodiment is a device used for automatic driving of the vehicle 100. The optional device 22 includes a sensor 22A, a calculation unit 22B, an actuator 22C, and a map database 22D.

  The sensor 22 </ b> A includes a sensor that detects a situation around the vehicle 100, a sensor that monitors the state of the driver, a sensor that detects the state of the vehicle 100, and the like. The sensor 22A includes, for example, LIDAR (Laser Imaging Detection and Ranging) and a radar sensor. The sensor 22A may further include an imaging device that images the vicinity of the vehicle 100 or the passenger compartment. The sensor 22A may be a single sensor or a sensor group including a plurality of sensors.

  The calculation unit 22B executes a calculation related to automatic driving. The calculation unit 22B includes, for example, an automatic operation ECU. A different calculation unit is mounted as the calculation unit 22B depending on the level of automatic driving that can be performed. When an option for performing a high-level automatic operation is selected, a high-function computing unit 22B is mounted on the vehicle 100.

  The actuator 22C is an actuator related to automatic operation. The actuator 22C is an actuator that controls the behavior of the vehicle 100, for example. The actuator 22C may include at least one of a braking actuator, a travel driving actuator, and a steering actuator. Actuator 22C may include a device that communicates with the outside of the vehicle.

  The map database 22D is a database that stores detailed map information used for automatic driving. The calculation unit 22B performs traveling control of the vehicle 100 based on the map information acquired from the map database 22D.

  The optional device 22 is connected to the first electrical connection box 1 via the second electrical connection box 21. That is, the second electrical junction box 21 distributes the power supplied from the battery 101 via the first electrical junction box 1 to the optional device 22. The second electrical connection box 21 has a plurality of fuses corresponding to individual devices constituting the optional device 22. The fuse of the second electrical connection box 21 may be a fusing fuse or an electronic fuse.

  As shown in FIG. 2, the first electrical junction box 1 includes a housing 2, a substrate 3, a fuse part 4, a fuse 5, a lid 6, an optional connection part 7, and an input part 8. The housing 2 accommodates the substrate 3, the fuse portion 4, and the fuse 5 inside. The housing | casing 2 is formed in the rectangular parallelepiped, and one side is opened. The lid 6 closes the opening of the housing 2.

  The substrate 3 is, for example, a printed circuit board (PCB). The input unit 8 is mounted on the substrate 3. An electric wire 13 is connected to the input unit 8. The input unit 8 is connected to the battery terminal of the battery 101 via the electric wire 13. The fuse part 4 and the fuse 5 are mounted on the substrate 3. The input unit 8 is connected to input terminals of the fuse unit 4 and the fuse 5 through a conductive unit such as a bus bar.

  A standard device 12 is connected to the output terminal of the fuse 5. More specifically, the third electrical junction box 11 is connected to the output terminal of the fuse 5. The fuse 5 is a main fuse of the standard device 12. The electric power supplied from the battery 101 is distributed to the standard device 12 via the fuse 5 and the third electrical connection box 11.

  As shown in FIG. 2, the option connection portion 7 is provided on the substrate 3. The option connection portion 7 is connected to the output terminal of the fuse portion 4 through a conductive portion such as a bus bar. An opening 61 corresponding to the option connection portion 7 is formed in the lid 6. The option wire harness WH2 includes a connector 24 that is connected to the option connection portion 7. The connector 24 is connected to one end of the electric wire 23. The other end of the electric wire 23 is connected to the second electrical junction box 21.

  The option device 22 is connected to the output terminal of the fuse portion 4 via the option connection portion 7, the connector 24, the electric wire 23, and the second electrical connection box 21. In other words, the sensor 22A, the calculation unit 22B, the actuator 22C, and the map database 22D are connected to the output terminal of the fuse unit 4. As described above, in this embodiment, among the devices used for automatic driving, the devices (sensor 22A, calculation unit 22B, actuator 22C, and map database 22D) that are optionally mounted on the vehicle 100 are the second electrical junction box. The option connection unit 7 is connected via the terminal 21. Therefore, power is supplied from the battery 101 to the sensor 22A, the calculation unit 22B, the actuator 22C, and the map database 22D through the fuse unit 4. Thus, the fuse part 4 of this embodiment is a main fuse of the optional device 22.

  The fuse part 4 of this embodiment is an electronic fuse. The fuse unit 4 includes an input terminal, an output terminal, a switch, a current detection unit, and a switch control unit. The switch is provided between the input terminal and the output terminal. The switch connects or disconnects the input terminal and the output terminal. The current detection unit detects a current value flowing from the input terminal to the output terminal. The switch control unit controls the switch based on the detection result of the current detection unit. More specifically, the switch control unit cuts off the input terminal and the output terminal by the switch when the detected current value exceeds the allowable value Ix.

  In the present embodiment, the allowable value Ix of the fuse portion 4 can be changed. The allowable value Ix is manually set by an operator, for example. The allowable value Ix may be set by switching a switch provided in the fuse unit 4 or the board 3 or may be set by software through communication. The vehicle 100 of this embodiment differs in the optional equipment 22 mounted in the vehicle 100 according to the level of automatic driving that can be performed. The level of automatic driving is classified by, for example, the degree of driver's involvement and responsibility in driving operation and judgment.

  For example, in the vehicle 100 of the present embodiment, the level of automatic driving includes level 1, level 2, level 3, and level 4. In level 1 and level 2, for example, the optional device 22 assists the driving operation and determination by the driver. At level 3, the option device 22 causes the vehicle 100 to travel on the responsibility of the option device 22 in a state where the driving operation can be handed over to the driver, for example. At level 4, the optional device 22 performs an automatic operation that is higher than that at level 3, for example. For example, at level 4, compared to level 3, a lot of time is provided before the driver hands over the driving operation.

  The configuration of the optional device 22 mounted on the vehicle 100 differs depending on the level of automatic driving. That is, as the level of automatic driving increases from level 1 to level 4, the function of the optional device 22 becomes more sophisticated or the number of optional devices 22 increases. That is, the option setting of the vehicle 100 differs depending on the level of automatic driving that can be performed, and the configuration of the option device 22 also differs.

  The option setting may be further classified according to the restriction of the road on which automatic driving is performed. For example, the contents of the optional device 22 required differ between when automatic driving is executed only on a motorway such as an expressway and when automatic driving is executed even on a general road. The optional equipment 22 in the case where automatic driving is performed also on a general road is sophisticated or increased as compared with the optional equipment 22 in the case where automatic driving is limited to an automobile-only road.

  In this specification, level 3 automatic driving performed only on automobile-only roads is referred to as “level 3L”. Further, level 3 automatic driving performed on a general road is referred to as “level 3H”. That is, level 3 includes, in principle, level 3H for executing automatic driving on all roads and level 3L for executing automatic driving on some limited roads.

  The work of attaching the optional device 22 and the option wire harness WH2 to the vehicle 100 and the work of setting the allowable value Ix of the fuse part 4 are performed by an operator. The worker attaches the optional device 22 to the vehicle 100 and connects the optional wire harness WH2 to the optional device 22. Further, the operator connects the connector 24 of the option wire harness WH2 to the option connection portion 7 and sets the allowable value Ix of the fuse portion 4. When the optional device 22 is installed, the battery 101 may be added or replaced depending on the configuration of the optional device 22. In this case, an operation of connecting the electric wire 13 to the added or replaced battery 101 is performed.

  According to the power supply system 10 of the present embodiment, an increase in the number of product numbers is suppressed. When the vehicle 100 is equipped with an optional automatic driving function, an apparatus used for automatic driving (hereinafter simply referred to as “automatic driving apparatus”) is connected to the option connecting portion 7 via the second electrical connection box 21. Connected. That is, the power supply system for the autonomous driving device is assembled as a wire harness including the second electrical junction box 21. The option wire harness WH2 is not mixed with the standard wire harness WH1, and the number of product numbers is suppressed.

  Moreover, according to the power supply system 10 of this embodiment, the operation | work which mounts the option apparatus 22 and the option wire harness WH2 with respect to the vehicle 100 becomes easy. Connection locations of the option wire harness WH2 with respect to the standard wire harness WH1 are gathered in one place. For this reason, the setting of the main fuse for protecting the optional device 22 can be performed only once. In the power supply system 10 of the present embodiment, the fuse setting accompanying the mounting of the optional device 22 is integrated into the work of setting the allowable value Ix of the fuse unit 4. Therefore, the power supply system 10 of the present embodiment can simplify the work associated with mounting the optional device 22.

  Moreover, the fuse part 4 of this embodiment is an electronic fuse. Therefore, it is not necessary to mount a plurality of fuses having different rated currents in the first electrical junction box 1. Therefore, the power supply system 10 of the present embodiment can realize a reduction in the size of the first electrical junction box 1. The first electrical junction box 1 can correspond to a plurality of optional devices 22 by the same fuse portion 4. In other words, the common first electrical junction box 1 can cope with a plurality of options. Therefore, it is suppressed that the product number of the 1st electrical junction box 1 will increase.

  As described above, the power supply system 10 of the present embodiment includes the first electrical connection box 1 that is mounted on the vehicle 100 as a standard, the second electrical connection box 21 that is optionally mounted on the vehicle 100, Have The first electrical connection box 1 includes an input unit 8 connected to the battery 101 of the vehicle 100 and an option connection unit 7 that outputs electric power from the battery 101. Battery 101 is an example of a power source of vehicle 100.

  The second electrical connection box 21 is connected to the option connection unit 7 and distributes the electric power supplied from the battery 101 via the option connection unit 7 to devices used for the automatic operation of the vehicle 100. According to the power supply system 10 of the present embodiment, the device used for automatic operation is connected to the first electrical connection box 1 via the second electrical connection box 21. That is, the locations where the devices used for automatic operation are connected to the standard wire harness WH1 are collected in the option connection unit 7. Therefore, the power supply system 10 of this embodiment can suppress an increase in the number of product numbers. Note that devices used for automatic driving may include devices mounted on the vehicle 100 as standard. Of the devices used for automatic operation, power may be supplied to a device mounted as a standard via the standard wire harness WH1.

  In the present embodiment, the optional device 22 that is optionally mounted on the vehicle 100 among the devices used for automatic driving is connected to the optional connection unit 7 via the second electrical connection box 21. By connecting the connection locations of the option device 22 to the standard wire harness WH1 in the option connection portion 7, an increase in the number of product numbers is suppressed.

  The first electrical junction box 1 of the present embodiment includes a fuse portion 4 that shuts off the optional connection portion 7 from the input portion 8 when a current exceeding the allowable value Ix flows from the input portion 8 toward the optional connection portion 7. Have. The allowable value Ix of the fuse part 4 is variable. The first electrical junction box 1 of the present embodiment can change the allowable value Ix of the fuse portion 4 according to the configuration of the optional device 22. Therefore, the power supply system 10 of the present embodiment can suppress an increase in the number of product numbers by using a common first electrical connection box 1 so as to be compatible with a plurality of optional configurations.

[Second Embodiment]
The second embodiment will be described with reference to FIGS. 3 to 9. In the second embodiment, components having the same functions as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. FIG. 3 is a diagram illustrating a configuration example of an optional device according to the second embodiment, FIG. 4 is a diagram illustrating another configuration example of the optional device according to the second embodiment, and FIG. 5 is a diagram according to the second embodiment. FIG. 6 is an explanatory diagram of a node, FIG. 7 is a block diagram of another connection form according to the second embodiment, FIG. 8 is a block diagram showing another connection form, and FIG. It is a block diagram which shows another connection form.

  The difference between the power supply system 10 according to the second embodiment and the power supply system 10 according to the first embodiment is that, for example, as shown in FIGS. 5 and 7, an optional device 22 and a second electrical connection box 21. The node 25 is interposed between the two. As will be described below, the provision of the node 25 makes it possible to share the option wire harness WH2 for a plurality of option settings for automatic operation.

  The configuration of the optional device 22 illustrated in FIG. 3 is a configuration corresponding to level 3L of automatic driving, for example. The optional device 22 includes a LIDAR 22E, a radar sensor 22F, a camera 22G, a calculation unit 22H, an actuator 22C, and a map database 22D. LIDAR 22E, radar sensor 22F, and camera 22G are a group of sensors for automatic driving. The calculation unit 22H includes an automatic driving ECU that executes level 3L automatic driving.

  The configuration of the optional device 22 illustrated in FIG. 4 is a configuration corresponding to level 3H of automatic driving, for example. The optional device 22 includes a first LIDAR 22Ea, a second LIDAR 22Eb, a first radar sensor 22Fa, a second radar sensor 22Fb, a first camera 22Ga, a second camera 22Gb, a calculation unit 22J, an actuator 22C, and a map database 22D. The calculation unit 22J includes an automatic driving ECU that executes level 3H automatic driving.

  The optional device 22 shown in FIG. 4 has a larger number of sensor groups than the optional device 22 shown in FIG. 4 includes an automatic operation ECU that is more functional than the calculation unit 22H illustrated in FIG.

  As illustrated in FIG. 5, the power supply system 10 according to the present embodiment includes a node 25 interposed between the optional device 22 and the optional wire harness WH2. The node 25 has a first node 25A, a second node 25B, and a third node 25C. As will be described with reference to FIG. 6, the node 25 of the present embodiment has a function of distributing power to a plurality of devices and a function of communicating with a plurality of devices.

  The node 25 may be referred to as an E connector, an electronic module, a driver, or the like. The node 25 includes a distribution circuit that distributes power and a communication circuit. As shown in FIG. 5, the node 25 is connected to the electric wire 23 and is connected to the second electrical connection box 21 via the electric wire 23. In addition, a digital communication line 28 is connected to the node 25. The node 25 communicates with the ECU 29 mounted on the vehicle via the digital communication line 28. The ECU 29 includes, for example, an automatic operation ECU.

  The node 25 is connected to a plurality of devices 26 via a supply line 23a. The device 26 is an individual device constituting the optional device 22. The device 26 is, for example, a sensor or a calculation unit. The node 25 is connected to the device 26 via the analog communication line 27. The node 25 communicates with the device 26 via the analog communication line 27. The node 25 performs input / output with the device 26 instead of the ECU 29. For example, the node 25 supplies power to the plurality of devices 26 according to a command from the ECU 29. Further, the node 25 transmits a drive signal to the device 26 via the analog communication line 27 in accordance with a command from the ECU 29. In addition, the node 25 transmits information acquired from the device 26 to the ECU 29 via the analog communication line 27.

  Since the node 25 is interposed between the ECU 29 and the device 26, the common ECU 29 can be used even when the number of the devices 26 and the functions of the devices 26 are different. Therefore, the power supply system 10 of this embodiment can share the option wire harness WH2 for a plurality of option settings for automatic operation.

  The option device 22 shown in FIG. 3 is connected to the option wire harness WH2 as shown in FIG. LIDAR 22E and radar sensor 22F are connected to option wire harness WH2 via first node 25A. The camera 22G is connected to the option wire harness WH2 via the second node 25B. The computing unit 22H is connected to the option wire harness WH2 via the third node 25C.

  Each node 25A, 25B, 25C supplies power to the option device 22 in response to a request from the connected option device 22. For example, the first node 25A acquires the required current values of the LIDAR 22E and the radar sensor 22F through communication with the LIDAR 22E and the radar sensor 22F. The first node 25A supplies power to the LIDAR 22E and the radar sensor 22F according to the required current value.

  The option device 22 shown in FIG. 4 is connected to the option wire harness WH2 as shown in FIG. The first LIDAR 22Ea, the second LIDAR 22Eb, the first radar sensor 22Fa, and the second radar sensor 22Fb are connected to the option wire harness WH2 via the first node 25A. The first camera 22Ga and the second camera 22Gb are connected to the option wire harness WH2 via the second node 25B. The computing unit 22J is connected to the option wire harness WH2 via the third node 25C.

  Thus, even if the number of option devices 22 is different, the option wire harness WH2 can be shared. The option wire harness WH2 and the nodes 25A, 25B, and 25C may be assembled into a power supply module for the option device 22.

  The connection form between the option device 22 and the option wire harness WH2 via the node 25 is not limited to the illustrated form. For example, as shown in FIG. 8, the radar sensor 22F and the camera 22G may be connected to the option wire harness WH2 via one node 25. As illustrated in FIG. 9, the LIDAR 22E, the radar sensor 22F, and the camera 22G may be connected to the option wire harness WH2 via one node 25.

[First Modification of the Embodiment]
A first modification of the first embodiment and the second embodiment will be described. FIG. 10 is a schematic configuration diagram of a first electrical junction box according to the first modification, and FIG. 11 is a diagram illustrating an example of a connection form of the electrical junction box according to the first modification. In the first modification, the difference from the first embodiment and the second embodiment is that, for example, the fuse portion 4 has a plurality of fuses 41, 42, and 43.

  As shown in FIG. 10, the first electrical junction box 1 according to the first modification has a fuse portion 4. The fuse part 4 has a first fuse 41, a second fuse 42, and a third fuse 43. The first fuse 41, the second fuse 42, and the third fuse 43 are, for example, fusing fuses. The first fuse 41 is a fuse corresponding to the option device 22 mounted on the vehicle 100 in option 2. Option 2 is an option setting in which the highest level of automatic operation that can be performed is level 2.

  The second fuse 42 is a fuse corresponding to the option device 22 mounted on the vehicle 100 in the option 3L. Option 3L is an option setting in which the highest level of automatic operation that can be performed is set to level 3L. The third fuse 43 is a fuse corresponding to the option device 22 mounted on the vehicle 100 in the option 3H. Option 3H is an option setting in which the highest level of automatic operation that can be performed is level 3H.

  The first fuse 41, the second fuse 42, and the third fuse 43 have mutually different allowable values. The allowable value of the first fuse 41 is the allowable value Iu. The allowable values of the second fuse 42 and the third fuse 43 are an allowable value Iv and an allowable value Iw, respectively. The allowable value Iu of the first fuse 41 is smaller than both the allowable value Iv and the allowable value Iw. The allowable value Iw of the third fuse 43 is larger than both the allowable value Iu and the allowable value Iv.

  The option connection part 7 includes a first terminal part 71, a second terminal part 72, and a third terminal part 73. The first terminal portion 71 is a terminal portion connected to the first fuse 41. In other words, the first terminal portion 71 corresponds to the option device 22 mounted as option 2. The first fuse 41 shuts off the first terminal portion 71 from the input portion 8 when a current exceeding the allowable value Iu flows from the input portion 8 toward the first terminal portion 71.

  The second terminal portion 72 is a terminal portion connected to the second fuse 42. In other words, the second terminal portion 72 corresponds to the optional device 22 mounted with the option 3L. The second fuse 42 shuts off the second terminal portion 72 from the input portion 8 when a current exceeding the allowable value Iv flows from the input portion 8 toward the second terminal portion 72.

  The third terminal portion 73 is a terminal portion connected to the third fuse 43. In other words, the third terminal portion 73 corresponds to the option device 22 mounted with the option 3H. The third fuse 43 blocks the third terminal portion 73 from the input portion 8 when a current exceeding the allowable value Iw flows from the input portion 8 toward the third terminal portion 73.

  The lid 6 has a first opening 61A, a second opening 61B, and a third opening 61C. The first opening 61 </ b> A corresponds to the first terminal portion 71. The second opening 61 </ b> B corresponds to the second terminal portion 72, and the third opening 61 </ b> C corresponds to the third terminal portion 73.

  FIG. 10 shows an optional device 22 mounted on the vehicle 100 with option 2. The optional device 22 of option 2 includes a sensor 22A, a calculation unit 22B, an actuator 22C, and a map database 22D. The connector 24 is inserted into the first opening 61 </ b> A and connected to the first terminal portion 71. In this case, the optional device 22 is connected to the battery 101 via the second electrical connection box 21, the electric wire 23, the connector 24, the first terminal portion 71, and the first fuse 41.

  FIG. 11 shows an optional device 22 mounted on the vehicle 100 with the option 3H. The option device 22 of option 3H includes two LIDARs 22Ea and Eb, two radar sensors 22Fa and Fb, two cameras 22Ga and Gb, a calculation unit 22J, an actuator 22C, and a map database 22D. The connector 24 is inserted into the third opening 61 </ b> C and connected to the third terminal portion 73. In this case, the optional device 22 is connected to the battery 101 via the second electrical connection box 21, the electric wire 23, the connector 24, the third terminal portion 73, and the third fuse 43.

  When the level of automatic operation that can be performed is level 3L, the connector 24 is inserted into the second opening 61B and connected to the second terminal portion 72. That is, the second electrical junction box 21 is connected to a different terminal portion among the plurality of terminal portions 71, 72, 73 according to the level of automatic operation that can be performed.

  As described above, in the first electrical junction box 1 according to the first modification, the allowable value of the fuse portion 4 can be changed to the allowable value Iu, the allowable value Iv, and the allowable value Iw. The allowable value of the fuse portion 4 varies depending on whether the connector 24 is connected to the first terminal portion 71, the second terminal portion 72, or the third terminal portion 73. In other words, the allowable value of the fuse unit 4 is determined depending on which of the plurality of terminal units (the first terminal unit 71, the second terminal unit 72, and the third terminal unit 73) the optional device 22 is connected to. That is, there is no need to change the allowable value of the fuse portion 4. Therefore, the first electrical junction box 1 of the present embodiment improves the workability in attaching the optional device 22 and the optional wire harness WH2.

  The fuse unit 4 may further have a fuse corresponding to the option 4. Option 4 is an option setting in which the highest level of automatic operation that can be performed is level 4. In this case, it is desirable that the option connection portion 7 has a fourth terminal portion corresponding to the option 4 fuse.

[Second Modification of the Embodiment]
The configuration of the optional device 22 is not limited to the illustrated configuration. The optional device 22 may include various devices used for automatic driving of the vehicle 100 in addition to the illustrated devices.

  The structure of the fuse part 4 is not limited to the illustrated structure. The mechanism that makes the allowable value variable in the fuse part 4 is not limited to the illustrated mechanism. The power source of vehicle 100 is not limited to battery 101. A capacitor or the like may be mounted on the vehicle 100 as a power source.

  The contents disclosed in each of the above embodiments and modifications can be executed in appropriate combination.

DESCRIPTION OF SYMBOLS 1 1st electrical junction box 2 Case 3 Board | substrate 4 Fuse part 5 Fuse 6 Cover 7 Optional connection part 8 Input part 10 Electric power supply system 11 3rd electrical junction box 12 Standard equipment 12A 1st equipment 12B 2nd equipment 12C 2nd Three devices 13 Electric wires 21 Second electrical junction box 22 Optional device 22A Sensor 22B, 22H, 22J Arithmetic unit 22C Actuator 22D Map database 22E LIDAR
22Ea 1st LIDAR
22Eb Second LIDAR
22F radar sensor 22Fa first radar sensor 22Fb second radar sensor 22G camera 22Ga first camera 22Gb second camera 23 electric wire 24 connector 25 node 25A first node 25B second node 25C third node 26 equipment 27 analog communication line 28 digital communication Line 29 ECU
41 1st fuse 42 2nd fuse 43 3rd fuse 61 opening part 61A 1st opening part 61B 2nd opening part 61C 3rd opening part 71 1st terminal part 72 2nd terminal part 73 3rd terminal part 100 vehicle 101 battery 102 Generator WH1 Standard wire harness WH2 Optional wire harness

Claims (4)

An input unit connected to a power source of the vehicle; and an optional connection unit that outputs power from the power source; and a first electric connection box mounted as a standard on the vehicle;
A second electrical connection box that is connected to the option connection unit, distributes the power supplied from the power source through the option connection unit to devices used for automatic driving of the vehicle, and is optionally mounted on the vehicle When,
A power supply system comprising: The power supply system according to claim 1, wherein devices that are optionally mounted on the vehicle among the devices used for the automatic operation are connected to the option connection unit via the second electrical connection box. The optional connection part has a plurality of terminal parts,
3. The power supply system according to claim 1, wherein the second electrical junction box is connected to the different terminal units according to the level of the automatic operation that can be performed. The first electrical connection box is a fuse that cuts off the optional connection portion from the input portion when a current exceeding the allowable value flows from the input portion toward the optional connection portion, and the allowable value is variable. The power supply system according to any one of claims 1 to 3, further comprising a unit.

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