阅读说明：本技术 汽车用布线系统 (Wiring system for automobile ) 是由 松村雄高 石原章生 伊东真也 于 2019-08-26 设计创作，主要内容包括：目的是尽量提高汽车用布线系统的通用性。汽车用布线系统是搭载于被组装多个电气部件的汽车的汽车用布线系统,具备：第1连接装置,相对于电气部件以能进行通信及电源供给的方式连接；和多个第2连接装置,相对于电气部件以能进行通信及电源供给的方式连接,公共通信线依次通过所述第1连接装置和所述多个第2连接装置,在所述第1连接装置和所述多个第2连接装置各自中以能与电气部件通信的方式分支,搭载于汽车的多个电源连接到所述第1连接装置并汇集,并且所述多个电源的电力从所述第1连接装置分配给所述多个第2连接装置各自。(The purpose is to improve the versatility of the wiring system for an automobile as much as possible. An automotive wiring system mounted on an automobile to which a plurality of electrical components are mounted, the automotive wiring system comprising: a first connecting device 1 connected to the electric component so as to be capable of communication and power supply; and a plurality of 2 nd connecting devices connected to an electric component so as to be capable of communication and power supply, wherein a common communication line passes through the 1 st connecting device and the plurality of 2 nd connecting devices in order, the 1 st connecting device and the plurality of 2 nd connecting devices are branched so as to be capable of communication with the electric component, a plurality of power sources mounted on an automobile are connected to the 1 st connecting device and collected, and electric power of the plurality of power sources is distributed from the 1 st connecting device to each of the plurality of 2 nd connecting devices.)

1. An automotive wiring system mounted on an automobile to which a plurality of electrical components are mounted, the automotive wiring system comprising:

a first connecting device 1 connected to the electric component so as to be capable of communication and power supply; and

a plurality of No. 2 connecting devices connected to the electric parts so as to be capable of communication and power supply,

the common communication line is branched in order through the 1 st connecting device and the plurality of 2 nd connecting devices so as to be communicable with the electrical component in each of the 1 st connecting device and the plurality of 2 nd connecting devices,

a plurality of power sources mounted on the automobile are connected to and collected by the 1 st connecting device, and electric power of the plurality of power sources is distributed from the 1 st connecting device to each of the plurality of 2 nd connecting devices.

2. The automotive wiring system according to claim 1,

the communication device further includes a gateway device connected to one end of the public communication line.

3. The wiring system for an automobile according to claim 1 or claim 2,

at least 1 of the 1 st connecting device and the plurality of 2 nd connecting devices is connected to an electric component through a common connector so as to be capable of supplying power and communicating.

4. The wiring system for an automobile according to any one of claim 1 to claim 3,

at least 1 wiring portion provided between the 1 st connection device and the 2 nd connection device or between the plurality of 2 nd connection devices in the common communication line is connected to an inner wiring portion of at least 1 of the 1 st connection device and the plurality of 2 nd connection devices by a connector.

5. The wiring system for an automobile according to any one of claim 1 to claim 4,

at least 1 power wiring part provided between the 1 st connecting device and the plurality of 2 nd connecting devices is connected to at least 1 of the 1 st connecting device and the plurality of 2 nd connecting devices in a physically separated state.

6. The wiring system for an automobile according to any one of claims 1 to 5,

the plurality of power wiring portions provided between the 1 st connection device and the plurality of 2 nd connection devices include power wiring portions having different conductor sectional areas.

7. The wiring system for an automobile according to any one of claim 1 to claim 6,

the 1 st connecting device is provided with overcurrent cutoff portions corresponding to the plurality of 2 nd connecting devices, respectively.

8. The wiring system for an automobile according to any one of claim 1 to claim 7,

the 1 st connecting device is disposed in a front chamber on a front side of a vehicle compartment of an automobile,

the plurality of 2 nd connecting devices comprise 2 nd connecting devices which are respectively arranged on the left and the right in the vehicle chamber of the automobile.

Technical Field

The present disclosure relates to wiring systems for automobiles.

Background

Patent document 1 discloses a wire harness including: a trunk portion to which a plurality of power supply lines are bundled; a trunk line intermediate distribution unit that is sandwiched between both ends of the trunk line unit and to which a battery that is mounted on the vehicle and that stores electric power is connected; and a pair of trunk end distribution units that are connected to both ends of the trunk unit, respectively, and that distribute electric power from the power storage device to the devices connected to each other. In this wire harness, another battery is also connected to one of the pair of trunk end distribution portions.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-1860

Disclosure of Invention

Problems to be solved by the invention

However, examples of the vehicle include an internal combustion engine vehicle having an internal combustion engine as a power source, an electric vehicle having an electric motor as a power source, and a hybrid vehicle using these vehicles in combination. Each vehicle sometimes employs a different power supply system.

However, in the technique disclosed in patent document 1, a battery is connected to the trunk line intermediate distribution unit, and another battery is also connected to one of the pair of trunk line end distribution units. Therefore, when the power supply system is different, the design of the entire harness needs to be changed.

Therefore, the present disclosure aims to improve the versatility of the automotive wiring system as much as possible.

Means for solving the problems

The wiring system for an automobile according to the present disclosure is mounted on an automobile to which a plurality of electric components are assembled, and includes: a first connecting device 1 connected to the electric component so as to be capable of communication and power supply; and a plurality of 2 nd connecting devices connected to an electric component so as to be capable of communication and power supply, wherein a common communication line passes through the 1 st connecting device and the plurality of 2 nd connecting devices in order, the 1 st connecting device and the plurality of 2 nd connecting devices are branched so as to be capable of communication with the electric component, a plurality of power sources mounted on an automobile are connected to the 1 st connecting device and collected, and electric power of the plurality of power sources is distributed from the 1 st connecting device to each of the plurality of 2 nd connecting devices.

Effects of the invention

According to the present disclosure, the versatility of the wiring system for an automobile can be improved as much as possible.

Drawings

Fig. 1 is a block diagram showing an automotive wiring system according to an embodiment.

Fig. 2 is a block diagram showing a wiring system for an automobile in a case where power supply systems are different.

Fig. 3 is a block diagram showing the wiring system for an automobile in a case where the connected electrical components are changed.

Fig. 4 is a block diagram showing a wiring system for an automobile to which connector connection is applied.

Detailed Description

[ description of embodiments of the present disclosure ]

First, embodiments of the present disclosure will be described.

The wiring system for an automobile of the present disclosure is as follows.

(1) An automotive wiring system mounted on an automobile to which a plurality of electrical components are mounted, the automotive wiring system comprising: a first connecting device 1 connected to the electric component so as to be capable of communication and power supply; and a plurality of 2 nd connecting devices connected to an electric component so as to be capable of communication and power supply, wherein a common communication line passes through the 1 st connecting device and the plurality of 2 nd connecting devices in order, the 1 st connecting device and the plurality of 2 nd connecting devices are branched so as to be capable of communication with the electric component, a plurality of power sources mounted on an automobile are connected to the 1 st connecting device and collected, and electric power of the plurality of power sources is distributed from the 1 st connecting device to each of the plurality of 2 nd connecting devices.

Thus, even when the power supply system mounted on the automobile is different, by changing the configuration for connecting the 1 st connecting device and the power supply, most of the other parts of the automobile wiring system can be used as they are. The common communication line passes through the 1 st connecting device and the plurality of 2 nd connecting devices in this order, and branches to enable communication with the electrical component in each of the 1 st connecting device and the plurality of 2 nd connecting devices. Therefore, even if the electrical components connected to the 1 st and 2 nd connecting devices are changed, the electrical components connected to the 1 st and 2 nd connecting devices can communicate with each other through the common communication line. Therefore, the versatility of the wiring system for an automobile can be improved as much as possible.

(2) The automotive wiring system may further include a gateway device connected to one end of the public communication line. In this case, another electrical component having a different communication protocol can be communicably connected to the electrical component via the gateway device.

(3) At least 1 of the 1 st connecting device and the plurality of 2 nd connecting devices may be connected to an electric component through a common connector so as to be capable of supplying power and communicating with the electric component. In this case, it is possible to easily cope with a change of the electrical component connected to at least 1 of the 1 st connection device and the plurality of 2 nd connection devices.

(4) In the common communication line, at least 1 wiring portion provided between the 1 st connection device and the 2 nd connection device or between the plurality of 2 nd connection devices and an inner wiring portion of at least 1 of the 1 st connection device and the plurality of 2 nd connection devices may be connected by a connector. In this case, the wiring system can be easily incorporated into the automobile.

(5) At least 1 power wiring unit provided between the 1 st connecting device and the plurality of 2 nd connecting devices may be physically separated from at least 1 of the 1 st connecting device and the plurality of 2 nd connecting devices. In this case, the wiring system can be easily incorporated into the automobile.

(6) The plurality of power wiring portions provided between the 1 st connecting device and the plurality of 2 nd connecting devices may include power wiring portions having different conductor cross-sectional areas. In this case, the power wiring portion having an appropriate conductor cross-sectional area can be used separately according to the currents desired by each of the plurality of 2 nd connecting devices.

(7) The 1 st connecting device may be provided with an overcurrent cutoff portion corresponding to each of the plurality of 2 nd connecting devices. In this case, the 1 st connecting device can easily cope with the case where the overcurrent is cut off.

(8) The 1 st connecting device may be disposed in a front room located forward of a vehicle compartment of the automobile, and the plurality of 2 nd connecting devices may include 2 nd connecting devices provided on left and right sides in the vehicle compartment of the automobile. In this case, it is preferable to connect a power supply disposed in the front room to electric components provided on the left and right sides in the vehicle interior of the automobile. The vehicle is adapted to communicatively connect electrical components provided on the left and right sides in the front room and the vehicle room, respectively, to each other.

[ details of embodiments of the present disclosure ]

Specific examples of the wiring system for an automobile according to the present disclosure will be described below with reference to the drawings. The present disclosure is not limited to these examples, but is defined by the claims, and all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein.

[ embodiment ]

The automotive wiring system 30 according to the embodiment will be described below. Fig. 1 is a block diagram showing a wiring system 30 for an automobile.

The wiring system 30 for an automobile is mounted on the automobile 10 in which a plurality of electric components 20, 21, 22, and 23 are assembled. The space in the vehicle body 11 of the automobile 10 is divided into a vehicle interior 12 and a front compartment 14. The cabin 12 is a space for accommodating passengers and a space for accommodating cargo. The front chamber 14 is a space located forward of the vehicle chamber 12. In the case where the automobile 10 is driven by an internal combustion engine, the front room 14 is an engine room. In the case where the automobile 10 is driven by an electric motor, the front room 14 is a motor room. When the automobile 10 is driven by an internal combustion engine and an electric motor, the front room 14 is an engine and an electric motor room.

The electric components 20, 21, 22, 23 are sensors, switches, actuators such as motors, lighting devices, heaters, ECUs (electronic control units), and the like. The electric components 20, 21, 22, and 23 are disposed in a distributed manner in each part of the automobile. Here, the description will be given assuming that the electric component 20 is disposed in the front compartment 14, the electric component 21 is disposed on the front right side in the vehicle compartment 12, the electric component 22 is disposed on the front left side in the vehicle compartment 12, and the electric component 23 is disposed on the rear side in the vehicle compartment 12.

The wiring system 30 for the automobile includes a 1 st connecting device 40 and a plurality of 2 nd connecting devices 50A, 50B, and 50C.

The 1 st connecting device 40 is connected to the electrical component 20 so as to be able to perform communication and power supply. Here, the 1 st connecting device 40 is disposed in the front room 14, and is mainly connected to the electric components 20 disposed in the front room 14 so as to be able to perform communication and power supply.

The plurality of 2 nd connecting devices 50A, 50B, and 50C are connected to the electrical components 21, 22, and 23 so as to be able to perform communication and power supply. Here, the plurality of 2 nd connecting devices 50A, 50B, and 50C are disposed in the vehicle interior 12, and are connected to the electric components 21, 22, and 23 disposed in the vehicle interior 12 so as to be able to perform communication and power supply.

More specifically, the 2 nd connecting device 50A is disposed on the front right side in the vehicle compartment 12, and is connected to the electrical component 21 disposed on the front right side in the vehicle compartment 12 so as to be capable of communication and power supply. The 2 nd connecting device 50B is disposed on the left front side in the vehicle compartment 12, and is connected to the electrical component 22 disposed on the left front side in the vehicle compartment 12 so as to be able to perform communication and power supply. The 2 nd connecting device 50C is disposed on the rear side in the vehicle interior 12, and is connected to the electrical component 23 disposed on the rear side in the vehicle interior 12 so as to be capable of communication and power supply.

That is, the automobile 10 is divided into a plurality of regions, and the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C are arranged for each region. The electrical components 20, 21, 22, and 23 in each region are connected to the 1 st connection device 40 or the 2 nd connection devices 50A, 50B, and 50C disposed in the region.

The automotive wiring system 30 includes a common communication line 60 for mutual communication between the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C. The common communication line 60 is provided so as to pass through the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C in this order. In other words, the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, 50C are connected in a serial manner by the common communication line 60. More specifically, the common communication line 60 is a communication line for transmitting signals according to a multiplex communication protocol such as CAN (Controller Area Network) or LIN (Local Interconnect Network), and is formed by, for example, a twisted pair wire. The common communication line 60 is provided from the 1 st connecting device 40 and 1 of the plurality of 2 nd connecting devices 50A, 50B, and 50C to the other 1 via the remaining connecting devices. Therefore, the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, 50C are communicably connected to each other via 1 common communication line 60 as a whole. Here, the common communication line 60 is disposed from the 2 nd connecting device 50A to the 2 nd connecting device 50C via the 1 st connecting device 40 and the 2 nd connecting device 50B.

When a plurality of multiplex communication protocols are used in the automotive wiring system 30, the automotive wiring system 30 may include the common communication line 60 according to each multiplex communication protocol.

The common communication line 60 branches off so as to be able to communicate with the electrical components 20, 21, 22, and 23 in each of the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C. Here, the common communication line 60 branches off from the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C, and a branch line 62 is led out from the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C to the outside and connected to the electrical components 20, 21, 22, and 23. Therefore, the electrical components 20, 21, 22, and 23 are bus-connected to the common communication line 60 in the 1 st connecting device 40 and any one of the plurality of 2 nd connecting devices 50A, 50B, and 50C. The common communication line 60 is a communication line for transmitting signals according to a multiplex communication protocol, and therefore the electric components 20, 21, 22, 23 are communicably connected to each other via the common communication line 60.

A gateway device 66 is connected to the public communication line 60. Another electrical component 68 that communicates with another communication protocol can be connected to the public communication line 60 via the gateway device 66. Other electrical components 68 connected to the gateway device 66 may be a display device provided in the instrument panel, a switch, and the like.

Here, the gateway device 66 is connected to the end of the public communication line 60 on the 2 nd connection device 50A side, and also functions as a terminating resistor. Since the gateway device 66 is connected to one end of the public communication line 60, when another electric component is changed, the connection configuration between the gateway device 66 and the electric component 68 on one end side of the public communication line 60 can be easily handled by changing the wiring between the connection devices 40 and 50 in the public communication line 60 without changing the wiring.

Further, a terminating resistor 69 is connected to the end of the public communication line 60 on the 2 nd connecting device 50C side. The terminating resistor 69 may be provided inside the 2 nd connecting device 50C or may be provided outside the 2 nd connecting device 50C.

A plurality of power supplies 70 and 72 are mounted on the vehicle 110. Here, the vehicle 10 is assumed to be an electric vehicle, and batteries 70 and 72 of 2 kinds of voltage are mounted as the plurality of power sources 70 and 72. The voltage of battery 70 is lower than the voltage of battery 72. The battery 70 is a low-voltage battery also called an auxiliary battery, and supplies a voltage of, for example, 5V to 59V. The battery 72 is a power supply for supplying a voltage suitable for driving a motor for running the automobile 10, and is a high-voltage battery for supplying a voltage of, for example, 90V to 500V.

The batteries 70, 72 are connected to the 1 st connecting means 40 and collected. Preferably, all power sources mounted on the automobile 10 are connected to the 1 st connecting device 40.

The battery 70 is directly connected to the 1 st connecting means 40 in order to supply a low voltage. The connection from the battery 70 to the 1 st connecting device 40 is performed via a wire, a connector, or the like.

The battery 72 is connected to the 1 st connecting device 40 via a DC-DC converter 74. The DC-DC converter 74 converts the high voltage of the battery 72 into a low voltage of 5V to 59V in accordance with the voltage of the battery 70. The connection from the battery 72 to the 1 st connecting device 40 is performed via a wire, a connector, or the like.

The power supply line 80 from the battery 70 and the power supply line 81 from the battery 72 via the DC-DC converter 74 are connected to the common power supply line 82 in the 1 st connecting device 40 and are collected into one. The power lines 80 and 81 are not necessarily wired together with other communication lines, and can be easily routed through a route away from the driver's seat, the passenger seat, or the like.

The power of the plurality of batteries 70, 72 is distributed from the 1 st connecting device 40 to each of the plurality of 2 nd connecting devices 50A, 50B, 50C.

That is, the common power supply line 82 branches for the 1 st connection device 40 and the plurality of 2 nd connection devices 50A, 50B, and 50C in the 1 st connection device 40. Here, the common power supply line 82 is branched into four branch power supply lines 83, 84, 85, and 86.

The branch power supply line 83 is led out from the 1 st connecting device 40 to the outside, and is connected to the electrical component 20 connected to the 1 st connecting device 40. Thereby, the electric component 20 is supplied with power. The branch power supply line 83 may be led out directly from the 1 st connecting device 40 to the outside and connected to the electrical component 20. The branch power supply line 83 may be divided into a wiring portion inside the 1 st connecting device 40 and a wiring portion connecting the outside of the 1 st connecting device 40 and the electric component 20, and the two may be connected by a connector.

The branch power supply line 84 is led out from the 1 st connection device 40, passes through the space in the automobile 10, and is led into the 2 nd connection device 50A. The branch power supply line 84 is led out from the inside of the 2 nd connection device 50A to the outside, and is connected to the electrical component 21 connected to the 2 nd connection device 50A. Thereby, power is supplied to the electric component 21. When a plurality of electrical components 21 are connected to the 2 nd connecting device 50A, the branch power supply line 84 branches in the 2 nd connecting device 50A, is led out of the 2 nd connecting device 50A, and is connected to each electrical component 21. The power supply to the plurality of electrical components 21 connected to the 2 nd connecting device 50A is possible.

The branch power supply line 84 may be formed by a continuous single conductive path. The branch power supply line 84 may be divided into a wiring portion in the 1 st connecting device 40, a wiring portion in the 2 nd connecting device 50A, and a wiring portion laid in the automobile therebetween and connected by a connector.

The branch power supply lines 85, 86 are led out from the 1 st connection device 40, pass through the space in the automobile 10, and are led into the 2 nd connection devices 50B, 50C. The branch power supply lines 85 and 86 are connected to the electrical components 22 and 23 connected to the 2 nd connecting devices 50B and 50C by the same configuration as the branch power supply line 84 in the 2 nd connecting device 50A.

In addition, when any of the electrical component 20 connected to the 1 st connecting device 40 and the electrical components 21, 22, and 23 connected to the 2 nd connecting devices 50A, 50B, and 50C is an electrical component driven by a voltage different from the voltage of the battery 70 (or the voltage transformed by the DC-DC converter 74), a transformer may be incorporated in the 1 st connecting device 40, and the transformed voltage may be supplied via any of the branch power supply lines 83, 84, 85, and 86.

When the portions of the branch power lines 84, 85, 86 provided between the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, 50C are the power wiring portions 84a, 85a, 86a, the plurality of power wiring portions 84a, 85a, 86a include power wiring portions having different conductor cross-sectional areas (cross-sections orthogonal to the extending direction). Here, the plurality of power wiring portions 84a, 85a, and 86a are formed with different conductor cross-sectional areas. The conductor cross-sectional areas of the plurality of power wiring portions 84a, 85a, and 86a are set according to the currents flowing through the electrical components 21, 22, and 23 connected to the 2 nd connecting devices 50A, 50B, and 50C. The power wiring portions 84a, 85a, 86a have a smaller cross-sectional conductor area than the cross-sectional conductor area of the power lines 80, 81 connecting the 1 st connecting device 40 and the batteries 70, 72.

The 1 st connecting device 40 is provided with overcurrent cutoff portions 87A, 87B, and 87C corresponding to the plurality of 2 nd connecting devices 50A, 50B, and 50C, respectively. Overcurrent cutoff units 87A, 87B, and 87C cut off the power supply lines when an excessive current flows. Here, in the 1 st connecting device 40, an overcurrent cutoff portion 87a is interposed between the branch power supply line 84, an overcurrent cutoff portion 87b is interposed between the branch power supply line 85, and an overcurrent cutoff portion 87c is interposed between the branch power supply line 86.

The 1 st connecting device 40 is provided with an overcurrent cutoff portion 87 corresponding to the electric component 20 connected to itself. Overcurrent cutoff unit 87 is inserted into branch power supply line 83.

Assume that the overcurrent cutoff units 87, 87a, 87b, and 87c are fuses. The overcurrent cutoff units 87, 87a, 87b, and 87c may be configured by a combination of a current sensor and a semiconductor switch that performs on-off control based on the output of the current sensor.

Here, the 2 nd connecting devices 50a, 50b, and 50c are also provided with overcurrent cutoff portions 88a, 88b, and 88c, respectively. The overcurrent cutoff portions 88a, 88b, and 88c are inserted between the branch power supply lines 84, 85, and 86 in the 2 nd connecting devices 50a, 50b, and 50c, respectively.

The grounding in the wiring system 30 for an automobile may be performed through the vehicle body, or may be performed along the branch power supply lines 84, 85, and 86 by using a grounding wire.

According to the automotive wiring system 30 configured as described above, even when the power supply system mounted on the automobile 10 is different, most of the other parts of the automotive wiring system 30 can be used as they are by changing the configuration of connecting the 1 st connecting device 40 to a plurality of power supplies. For example, assume a case where the automobile is not an electric automobile 10 as shown in fig. 1, but an automobile 10a driven by an internal combustion engine as shown in fig. 2. In this case, the vehicle 10a is provided with a low-voltage battery 70 and an alternator 72a as a plurality of power sources. In this case, when the low-voltage battery 70 and the alternator 72a are changed to be connected to the 1 st connecting device 40, most of the automotive wiring system 30 can be used as it is. That is, the present invention can be easily used without changing the installation positions of the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50a, 50b, and 50c, the wiring members between them, and the wiring paths.

In addition, when the connection structure between the plurality of power sources and the 1 st connecting device is changed, the 1 st connecting device 40 may be provided with a plurality of types of connectors capable of connecting a previously assumed power source. The 1 st connecting device 40 itself may be designed to be changed according to the power source to be connected.

The common communication line 60 passes through the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C in this order, and branches to enable communication with the electrical components 20, 21, 22, and 23 in each of the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C. Therefore, even if the electrical components 20, 21, 22, and 23 connected to the 1 st and 2 nd connecting devices 40 and 2 nd connecting devices are changed, the change can be handled. For example, a case where an additional electrical component 24 is connected to the 2 nd connecting device 50A as shown in fig. 3 is considered. In this case, the communication line 24s from the electrical component 24 is introduced into the 2 nd connecting device 50A and bus-connected to the common communication line 60. Since the common communication line 60 performs communication according to a multiplex communication protocol, the electric component 24 can communicate with other electric components 20, 21, 22, and 23 through the common communication line 60. Further, the branch power supply line 84 is branched at the 2 nd connection device 50A to provide a secondary branch power supply line 84d, and the secondary branch power supply line 84d is connected to the electric component 24, whereby power can be supplied to the electric component 24.

In this way, in the case where the power supply systems are different, the electrical components to be connected are different, and the like, it is possible to design and easily cope with the most part of the automotive wiring system 30 as much as possible, and it is possible to improve the versatility of the automotive wiring system 30 as much as possible.

The automobile 10 is divided into a plurality of areas, power is distributed to the 1 st connecting device 40 to the plurality of 2 nd connecting devices 50A, 50B, 50C for each area, and the electric components 21, 22, 23 are connected to the 1 st connecting device 40 and the 2 nd connecting devices 50A, 50B, 50C for each area, so that they can communicate with each other by multiplex communication. Therefore, in many cases, it is only necessary to study the electrical design change of the automobile 10 on a zone-by-zone basis

Further, since the gateway device 66 is connected to one end of the public communication line 60, another electric component 68 having a different communication protocol can be communicatively connected to the electric components 20, 21, 22, and 23 via the gateway device 66. In addition, when a change is made in the gateway device 66 or a design change is made in a wiring path on the other communication protocol side, the design change is only required for an element outside one end of the public communication line 60, and the automotive wiring system 30 can be easily designed by being used as it is. In this respect, the versatility of the automotive wiring system 30 can be improved.

Further, the 1 st connecting device 40 is provided with overcurrent cutoff portions 87A, 87B, and 87C corresponding to the plurality of 2 nd connecting devices 50A, 50B, and 50C, respectively. Therefore, the 1 st connecting device 40 can easily cope with the overcurrent interruption. For example, the 1 st connecting device 40 can easily cope with fuse replacement or the like.

The 1 st connecting device 40 is disposed in a front chamber 14 located on the front side of the vehicle chamber 12 of the automobile 10. Therefore, it is suitable to connect the power supply (batteries 70 and 72) disposed in the front room 14 to the electrical components 21, 22, and 23 provided on the left and right sides in the vehicle room 12. Further, it is suitable to communicatively connect electric components 20, 21, 22, and 23 provided on the left and right of front room 14 and vehicle room 12, respectively.

The 2 nd connecting means 50A, 50B and the 2 nd connecting means 50C are provided in the front and rear, and are therefore suitable for connection to the electric components 21, 22 and 23 provided separately in the front and rear regions so as to enable power supply and communication.

The connection for communication between the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, 50C, and between the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, 50C and the respective electric components 20, 21, 22, 23 is performed via communication lines. The communication line may be a twisted pair wire or a general wire.

The connection for power supply is performed via power supply lines between the 1 st connection device 40 and the batteries 70 and 72, between the 1 st connection device 40 and the plurality of 2 nd connection devices 50A, 50B, and 50C, and between the 1 st connection device 40 and the plurality of 2 nd connection devices 50A, 50B, and 50C and the respective electric components 20, 21, 22, and 23. The power supply line may be a general electric wire or a power supply line including a strip-shaped conductive plate.

The communication line or the power line may be introduced into the 1 st connecting device 40 or the 2 nd connecting devices 50A, 50B, and 50C as it is, and may be branched inside the 1 st connecting device 40 or the 2 nd connecting devices 50A, 50B, and 50C. The communication line or the power line may be connected to the internal wiring of the 1 st connecting device 40 or the 2 nd connecting devices 50A, 50B, and 50C via a connector.

For example, as shown in fig. 4, the following structure is disclosed: at least 1 of the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C is connected to the electrical components 20, 21, 22, and 23 through the common connectors 90A and 90B so as to be able to supply and communicate power. In the case of the 2 nd connecting device 50A, the power supply internal wiring portion 51p is connected to the terminal of the connector 90A. In the 2 nd connecting device 50A, the communication-use inner wiring portion 51s is connected to the terminal of the connector 90A. The power line 21p from the electric component 21 is connected to a terminal of the connector 90b, and the communication line 21s from the electric component 21 is connected to a terminal of the connector 90 p. By connector-connecting the connectors 90A and 90b, the 2 nd connecting device 50A and the electric component 21 are connected so as to be able to supply power and communicate with each other. In fig. 4, the electrical components 20, 22, and 23 are also connected to the other 1 st and 2 nd connecting devices 40 and 50B and 50C via the connectors.

This makes it possible to easily cope with the change of the electrical components 20, 21, 22, and 23 to at least 1 of the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, and 50C.

In addition, when the plurality of connectors 90A are provided in advance in at least 1 of the 1 st connecting device 40 and the 2 nd connecting devices 50A, 50B, and 50C (refer to the 2 nd connecting device 50A in fig. 4), the electrical component 24 to be added later can be easily connected by the connectors.

In addition, 1 wiring portion (for example, referring to the wiring portion 60s between the 1 st connection device 40 and the 2 nd connection device 50A, 50B, 50C in fig. 4) provided between the 1 st connection device 40 and the 2 nd connection devices 50A, 50B, 50C or between the plurality of 2 nd connection devices 50A, 50B, 50C in the common communication line 60 and at least 1 internal wiring portion (for example, referring to the internal wiring portion 51s of the 1 st connection device 40) of the 1 st connection device 40 and the 2 nd connection devices 50A, 50B, 50C may be connected by a connector. In fig. 4, the terminal of the connector 92b is connected to the end of the wiring portion 60s, and the terminal of the connector 92a is connected to the end of the inner wiring portion 51 s. Then, the wiring portion 60s and the inner wiring portion 51s are connected by the connectors 92a and 92 b. In fig. 4, an example in which the inner wiring portion and the outer inner wire portion are connected by a connector is also disclosed with respect to the other portion of the public communication line 60.

Thus, the wiring portion laid in the automobile in the public communication line 60, the 1 st connecting device 40, and the plurality of 2 nd connecting devices 50A, 50B, and 50C are respectively incorporated, and therefore, the automobile wiring system 30 can be easily incorporated into the automobile 10.

Further, the following structure is also possible: at least 1 power wiring portion provided between the 1 st connecting device 40 and the plurality of 2 nd connecting devices 50A, 50B, 50C (for example, refer to the power wiring portion 84p between the 1 st connecting device 40 and the 2 nd connecting device 50A in fig. 4) and at least 1 internal wiring portion (for example, refer to the internal wiring portion 51p of the 1 st connecting device 40) of the 1 st connecting device 40 and the 2 nd connecting devices 50A, 50B, 50C are physically separated from each other. That is, the power supply wiring portion 84p and the inner wiring portion 51p may be formed separately and connected after manufacture, particularly after assembly to the automobile 10. In fig. 4, a terminal of the connector 94b is connected to an end of the power wiring portion 84p, and a terminal of the connector 94a is connected to an end of the internal wiring portion 51 p. The power wiring portion 84p and the inner wiring portion 51p are connected by the connectors 94a and 94 b. In fig. 4, an example in which the inner wiring portion and the outer inner wire portion are connected by a connector is also disclosed with respect to the other portion of the power cord. The connection between the inner wiring portion and the outer inner wire portion may be a connection via a circular terminal.

Thus, the wiring portion of the power supply line laid in the automobile, the 1 st connecting device 40, and the plurality of 2 nd connecting devices 50A, 50B, and 50C are respectively incorporated, and therefore, the automobile wiring system 30 can be easily incorporated into the automobile 10.

The configurations described in the above embodiments and modifications can be combined as appropriate as long as they do not contradict each other.

Description of the reference numerals

10 electric automobile

10A automobile

11 vehicle body

12 vehicle room

14 antechamber

20. 21, 22, 23, 24 electrical component

21p power supply line

21s communication line

24s communication line

30 wiring system for automobile

40 st 1 connecting device

50 connecting device

50A, 50B, 50C 2 nd connecting device

51p, 51s internal wiring portion

60 public communication line

60s Wiring part

62 branch line

66 gateway device

68 electric component

69 terminal resistor

70 low-voltage battery (Power supply)

72 Battery (Power supply)

72A AC generator

74 DC-DC converter

80. 81 power cord

82 common power line

83. 84 branch power line

84a Power supply Wiring part

84d secondary branch power line

84p Power supply Wiring part

85 branch power line

85a power supply wiring part

86 branch power line

86a power supply wiring part

87. 87A, 87B, 87C, 88A, 88B, 88C overcurrent cutoff unit

90a, 90b, 90p, 92a, 92b, 94a, 94b connectors