JP2019123466A - Power supply system for vehicle and vehicle system - Google Patents

Abstract

A vehicle power supply system and a vehicle system capable of improving the installation of the system are provided. A noise power recovery system includes a main line and a coil unit. The main line 10 is routed in the vehicle and electrically connects the inverter 3 and the battery 2. The coil unit 21 is provided with an opening into which the main line 10 is inserted, generates an electromotive force by electromagnetic induction in accordance with a change in the magnetic field of noise superimposed on the current flowing in the main line 10, and supplies power to the connected sensor unit 22. Supply. [Selection] Figure 1

Description

  The present invention relates to a power supply system for a vehicle and a vehicle system.

  Conventionally, as a vehicle system, for example, in Patent Document 1, various load units such as a temperature sensor of a vehicle and a door mirror switch, a power supply for supplying power to each load unit, a power supply, and each load unit are connected Discloses a power supply system for a vehicle provided with a wire such as a wire harness.

JP, 2016-60426, A

  By the way, in the electric power supply system for vehicles of patent document 1, the load part containing a sensor etc. tends to increase by the advanced safety function etc. of vehicles. For this reason, in the electric power supply system for vehicles, the wiring property may be lowered due to an increase in the number of electric wires for supplying electric power to the load parts, and it may be difficult to install the load parts.

  Then, this invention is made in view of the above, Comprising: It aims at providing the electric power supply system for vehicles and vehicle system which can improve the installation property of a system.

  In order to solve the problems described above and achieve the object, a power supply system for a vehicle according to the present invention includes a wire arranged in a vehicle and electrically connecting a first object and a second object, and the wire And a coil unit which is provided with an opening to be inserted, generates an electromotive force by electromagnetic induction according to a change of a magnetic field of noise superimposed on a current flowing in the electric wire, and supplies power to a connected load part. It is characterized by

  In the power supply system for a vehicle according to the present invention, another electric wire electrically connected to an object different from at least one of the first object and the second object transmits a parallel running section in which the electric wire runs in parallel with the electric wire An antenna adjacent section adjacent to the wire, and the coil unit is provided upstream of the parallel section when current flows from the upstream side to the downstream side of the wire, and It is preferable to be provided in the said upstream rather than the said antenna adjacent area.

  The electric power supply system for a vehicle according to any one of the above aspects, further comprising: a binding portion in which another electric wire electrically connected to an object different from at least one of the first object and the second object is bundled with the electric wire; Preferably, the binding portion is inserted into the opening.

  In the above power supply system for a vehicle, the first target includes vehicle equipment or a ground mounted on the vehicle, the second target includes a power source, and the electric wire is the power source and the power source. It is preferable to comprise including the electric power line which connects with the said vehicle apparatus or the said gland | grand | ground.

  In the power supply system for a vehicle, the first object is configured to include vehicle equipment mounted on the vehicle, and the second object is configured to include a control unit for controlling the vehicle equipment, and the electric wire Preferably, the system includes a communication line for transmitting and receiving a communication signal between the control unit and the vehicle device.

  In the vehicle power supply system, the load unit preferably includes a power storage unit that stores the power supplied from the coil unit.

  In the above-mentioned electric power supply system for vehicles, the coil unit can convert a magnetic flux generated in the magnetic body into an induced voltage, and a magnetic body having an annular main body portion and the opening portion opened in the main body portion. It is preferable to comprise including a coil.

  A vehicle system according to the present invention comprises: a first object and a second object mounted on the vehicle; a load unit mounted on the vehicle; and the first object and the second object, which are arranged on the vehicle. And an opening portion into which the electric wire is inserted, an electromotive force is generated by electromagnetic induction according to a change in a magnetic field of noise superimposed on a current flowing through the electric wire, and the load portion is connected And a coil unit for supplying power.

  The power supply system for a vehicle and the vehicle system according to the present invention can reduce the power supply line of the load unit, and can supply power to the load unit without using a dedicated power supply unit. Moreover, the power supply system for vehicles and the vehicle system can reduce the noise filter which removes the noise of an electric wire, and the shield member which shields the said noise. As a result, the power supply system for vehicles and the vehicle system can realize space saving, and can improve the installability of the system.

FIG. 1 is a block diagram showing a configuration example of a vehicle system according to the embodiment. FIG. 2 is a diagram illustrating an example of connection between a detection unit and a trunk according to the embodiment. FIG. 3 is a perspective view showing a closed state of the coil unit according to the embodiment. FIG. 4 is a perspective view showing an open state of the coil unit according to the embodiment. FIG. 5 is a block diagram showing a configuration example of a sensor unit according to the embodiment. FIG. 6 is a diagram showing the amount of energy acquired by the coil unit according to the embodiment. FIG. 7 is a diagram illustrating an installation place of the detection unit according to the embodiment. FIG. 8 is a diagram showing an installation place of a detection unit according to a modification of the embodiment. FIG. 9 is a view showing an attachment example of a coil unit according to a modification of the embodiment. FIG. 10 is a block diagram showing a configuration example of a vehicle system according to a modification of the embodiment.

  A mode (embodiment) for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited by the contents described in the following embodiments. Further, the components described below include those which can be easily conceived by those skilled in the art and those which are substantially the same. Furthermore, the configurations described below can be combined as appropriate. In addition, various omissions, substitutions, or modifications of the configuration can be made without departing from the scope of the present invention.

[Embodiment]
A noise power recovery system 1 and a vehicle system 100 as a vehicle power supply system according to an embodiment will be described. The vehicle system 100 is a system mounted on a vehicle such as a HEV (Hybrid Electric Vehicle), for example, and supplying power from the battery 2 to the inverter 3. As shown in FIG. 1, the vehicle system 100 includes a battery (second target) 2 as a power supply, an inverter (first target) 3 as a vehicle device, a motor 4, an engine 5, a transmission 6, and noise. And a power recovery system 1.

  The battery 2 is a power supply that stores electric power. The battery 2 includes, for example, a battery pack to which a plurality of battery cells are connected, and supplies DC power. The battery 2 is not limited to the assembled battery as long as it can supply direct current power, and may be in any form. The battery 2 is connected to the inverter 3 and supplies DC power to the inverter 3.

  The inverter 3 converts DC power into AC power. The inverter 3 is connected to the battery 2 and the motor 4, converts DC power supplied from the battery 2 into AC power suitable for traveling, and outputs the converted AC power to the motor 4.

  The motor 4 converts AC power into rotational power. The motor 4 is connected to the inverter 3 and converts AC power output from the inverter 3 into rotational power. The motor 4 is connected to a shaft drive (not shown) via the transmission 6 and transmits rotational power to the shaft drive via the transmission 6.

  The engine 5 converts fuel into rotational power. The engine 5 is connected to the shaft drive via the transmission 6 and transmits rotational power to the shaft drive via the transmission 6.

  The transmission 6 changes the rotational speed of power transmission. The transmission 6 is connected to the motor 4, the engine 5 and the shaft drive, changes the rotational speed of the motor 4 and the engine 5 to a rotational speed suitable for traveling, and transmits rotational power to the shaft drive.

  The noise power recovery system 1 is a system for recovering noise power of a vehicle. The noise power recovery system 1 includes a trunk 10 as an electric wire, a plurality of detection units 20, and a noise impossible section 30 (see FIG. 7 and the like).

  The trunk line 10 is a wire through which current flows. The trunk line 10 is, for example, a wire harness in which a plurality of electric wires used for power supply and signal communication are bundled to form a collective part. The trunk line 10 includes a power line 10A which is provided in the vehicle and electrically connects the battery 2 and the inverter 3 or electrically connects the battery 2 and the ground (first object) G. The power line 10A is, for example, a high voltage cable, and as shown in FIG. 2, has a conducting part 11 for passing a current and a shielding part 12 for covering the conducting part 11 and shielding an electromagnetic wave or the like. The conduction part 11 is configured to include, for example, a core wire which is a conductor, and an insulating layer which insulates the core wire. The shield unit 12 includes, for example, a shield layer provided around the insulating layer of the conducting unit 11 to shield noise, and a sheath provided around the shield layer as a protective film. Power line 10 </ b> A has a plurality of exposed portions 13 in which conducting portion 11 is exposed from shield portion 12. A coil unit 21 described later is installed in each exposed portion 13. The power line 10A is basically covered with the shield portion 12 at the conductive portion 11. However, an exposed portion 13 where the conductive portion 11 is exposed from the shield portion 12 is provided at a position where the coil unit 21 is installed. In the power line 10A, a direct current supplied from the battery 2 to the inverter 3 and an AC noise current I (see FIG. 1) which is a current of noise generated due to the inverter 3 and the like flow. That is, in the power line 10A, the AC noise current I flows superimposed on the DC current.

  Each detection unit 20 detects the state of the vehicle. Each detection unit 20 detects, for example, the state of the battery 2. Each detection unit 20 is configured to include a coil unit 21 and a sensor unit 22 as a load unit. As shown in FIGS. 3 and 4, the coil unit 21 is an electronic component (choke coil) including a magnetic body 21a and a coil 21b, and the coil 21b applied to the magnetic body 21a. The magnetic body 21a is, for example, a toroidal core formed of a ferrite material or the like having high permeability. The magnetic body 21a includes an annular (ring-shaped) main body 21c, an opening 21d opened in the main body 21c, a hinge 21e, a claw 21f, and a hook 21g. The main body portion 21c is divided into approximately half, and has a first semicircular magnetic body 21h and a second semicircular magnetic body 21i. One end of the first semicircular magnetic body 21h and one end of the second semicircular magnetic body 21i are connected by a hinge 21e. The first semicircular magnetic body 21 h is provided with a claw portion 21 f at the other end side. The second semicircular magnetic body 21i is provided with a hooking portion 21g on the other end side. The magnetic body 21a is in an open state (see FIG. 4) in which the other end of the first semicircular magnetic body 21h and the other end of the second semicircular magnetic body 21i are separated from each other. There is a closed state (see FIG. 3) in which the other end and the other end of the second semicircular magnetic body 21i are in contact with each other to form an annular shape. The magnetic body 21 a forms a magnetic path with respect to the magnetic flux of the noise current I generated on the outer periphery of the trunk 10.

  The coil unit 21 is rotated so that the first semicircular magnetic body 21h and the second semicircular magnetic body 21i approach each other with the trunk 10 positioned at the opening 21d in an open state and the hinge 21e as a center. The other end of the semicircular magnetic body 21h and the other end of the second semicircular magnetic body 21i are in contact with each other to be in a closed state. The coil unit 21 is movably attached to the trunk 10 by the hook 21g being engaged with the claw 21f in a state where the trunk 10 is inserted into the opening 21d. In the coil unit 21, the magnetic body 21 a may be fixed to a wall or the like. In this case, the coil unit 21 supports the trunk 10 inserted in the opening 21 d of the magnetic body 21 a.

  The coil 21 b is a conductive wire wound in a spiral shape along the circumferential direction of the magnetic body 21 a. That is, the magnetic body 21a is inserted inside the coil 21b. The coil 21 b is electrically connected to the sensor unit 22 at the winding start point 21 j and the winding end point 21 k. The coil 21b generates an electromotive force by electromagnetic induction in response to a change in the magnetic field of noise superimposed on the current flowing through the trunk line 10, and supplies power to the sensor unit 22 connected. That is, the coil 21b converts the magnetic flux of the noise current I generated in the magnetic path of the magnetic body 21a into an induced voltage, and supplies the sensor unit 22 with the noise power which is the electric power corresponding to the converted induced voltage. As a result, the coil unit 21 can recover power from noise and can flow a current with reduced noise through the trunk 10. The induced voltage that can be converted from noise decreases every time it is converted (acquired) by the coil unit 21, as shown in FIG. For example, when the induced voltage is not converted by the coil unit 21, it is a voltage V4 (see FIG. 6). The induced voltage becomes a voltage V3 lower than the voltage V4 after being converted by the coil unit 21A. Similarly, the induced voltage becomes a voltage V2 lower than the voltage V3 after being converted by the coil unit 21B, becomes a voltage V1 lower than the voltage V2 after being converted by the coil unit 21C, and is converted after being converted by the coil unit 21D It will be 0 volts. The induced voltage that can be converted from noise changes according to the number of turns of the coil 21b. That is, the induced voltage is relatively high when the number of turns of the coil 21b is large, and is relatively low when the number of turns of the coil 21b is small. Thereby, when relatively high induced voltage is required, the number of turns of the coil 21b is increased, and when relatively low induced voltage is sufficient, the number of turns of the coil 21b is decreased.

  The sensor unit 22 detects the state of the battery 2. The sensor unit 22 includes, for example, a ground fault sensor unit 22A that detects a ground fault of the battery 2, a temperature sensor unit 22B that detects the temperature of the battery 2, a current sensor unit 22C that detects the current of the battery 2, and a voltage of the battery 2 There are types such as voltage sensor unit 22D to be detected. The sensor unit 22 is comprised including the energy conversion part 22a, the storage battery 22b as an electrical storage part, the sensor 22c, and radio | wireless machine 22d, as shown in FIG.

  The energy conversion unit 22a converts AC power into DC power. The energy conversion unit 22a is connected to the coil 21b, and converts AC power based on the induced voltage supplied from the coil 21b into DC power. The energy conversion unit 22a is connected to the storage battery 22b, and outputs the converted DC power to the storage battery 22b.

  The storage battery 22b stores electric power. The storage battery 22b is connected to the energy conversion unit 22a, and stores the DC power output from the energy conversion unit 22a.

  The sensor 22 c is an element that detects the state of the battery 2. The sensor 22c includes, for example, a ground fault sensor 22e that detects a ground fault of the battery 2, a temperature sensor 22f that detects the temperature of the battery 2, a current sensor 22g that detects the current of the battery 2, and a voltage sensor that detects the voltage of the battery 2 There is a type such as 22h. The sensor 22c is connected to the storage battery 22b and operates by supplying power from the storage battery 22b. The sensor 22c is connected to the wireless device 22d, and outputs the detection result of detecting the state of the battery 2 to the wireless device 22d.

  The wireless device 22d transmits signals wirelessly. The radio set 22d is connected to the storage battery 22b and operates by supplying power from the storage battery 22b. The wireless device 22d is connected to the sensor 22c, and the sensor 22c outputs a detection result when the state of the battery 2 is detected. The wireless device 22d wirelessly transmits the detection result output from the sensor 22c to a host ECU (Electronic Control Unit).

  The noise disabled section 30 is a section in which noise can not be tolerated, as shown in FIG. The noise disabled section 30 is configured to include the parallel running section 31 and the antenna adjacent section 32. The parallel running section 31 is a section in which the other electric wire 7 runs parallel to the trunk line 10. The other wire 7 is a wire electrically connected to an object different from at least one of the inverter 3 or the battery 2. The other wire 7 is, for example, a cable that connects a device (not shown) different from the inverter 3 and the battery 2. Further, the other electric wire 7 is, for example, a low voltage cable that connects a device different from the inverter 3 and a power supply (not shown) different from the battery 2. The coil unit 21 is provided on the upstream side of the parallel running section 31 when the current flows from the upstream side to the downstream side of the trunk line 10. The coil unit 21 is provided, for example, on the upstream side of the parallel running section 31 and not to include a noise generation source between the parallel running section 31 and the coil unit 21. The coil unit 21 is provided, for example, immediately before the parallel running section 31 and converts an induced voltage that can be converted from noise. As a result, the noise power recovery system 1 can flow the noise-suppressed current to the parallel running section 31 of the main line 10, so the number of shield members for the parallel running section 31 can be reduced.

  The antenna adjacent section 32 is a section in which an antenna (not shown) for transmitting and receiving radio waves is adjacent to the trunk line 10. The coil unit 21 is provided upstream of the antenna adjacent section 32. The coil unit 21 is, for example, on the upstream side of the antenna adjacent section 32 and is provided so that no noise generation source is included between the antenna adjacent section 32 and the coil unit 21. The coil unit 21 is provided, for example, immediately before the antenna adjacent section 32, and converts an induced voltage that can be converted from noise. As a result, the noise power recovery system 1 can flow the noise-suppressed current to the antenna adjacent section 32 of the main line 10, so the number of shield members for the antenna adjacent section 32 can be reduced.

  As described above, the noise power recovery system 1 according to the embodiment includes the trunk line 10 and the coil unit 21. The trunk line 10 is wired in a vehicle and electrically connects the inverter 3 and the battery 2. The coil unit 21 is provided with an opening 21 d into which the trunk line 10 is inserted, generates an electromotive force by electromagnetic induction according to a change in the magnetic field of noise superimposed on the current flowing through the trunk line 10 and supplies electric power to the sensor unit 22 connected. Supply.

  With this configuration, the noise power recovery system 1 can reduce power supply lines for supplying power to the sensor unit 22. Thus, the noise power recovery system 1 can improve the wiring performance of the sensor unit 22 and can improve the installation performance of the sensor unit 22. Further, since the noise power recovery system 1 supplies power to the sensor unit 22 by the induced voltage converted from noise, power can be supplied to the sensor unit 22 without using a dedicated power supply unit. Further, the noise power recovery system 1 can reduce the noise filter for removing the noise of the trunk line 10 and the shield member for shielding the noise. As a result, the noise power recovery system 1 can be saved in space, and the installation of the system can be improved. Further, since the noise power recovery system 1 supplies power to the sensor unit 22 by the induced voltage converted from the noise, the power consumption of the system can be suppressed.

  The noise power recovery system 1 is a parallel running section 31 in which another electric wire 7 electrically connected to an object different from at least one of the inverter 3 or the battery 2 runs parallel to the trunk 10 or an antenna for transmitting and receiving radio waves. The antenna adjacent section 32 adjacent to the trunk line 10 is provided. The coil unit 21 is provided on the upstream side of the parallel running section 31 and on the upstream side of the antenna adjacent section 32 when the current flows from the upstream side to the downstream side of the trunk line 10. With this configuration, the noise power recovery system 1 can flow the noise-suppressed current to the parallel running section 31 of the trunk line 10, so that it is possible to suppress the provision of the shield member in the parallel running section 31 as in the prior art. In addition, since the noise power recovery system 1 can flow the noise-suppressed current to the antenna adjacent section 32 of the main line 10, it is possible to suppress the provision of the shield member in the antenna adjacent section 32 as in the prior art. As a result, the noise power recovery system 1 can be saved in space, and the installation of the system can be improved.

  In the noise power recovery system 1, the main line 10 includes a power line 10A connecting the battery 2 and the inverter 3 or the ground G. With this configuration, the noise power recovery system 1 can generate an electromotive force by electromagnetic induction according to a change in the magnetic field of noise superimposed on the current flowing through the power line 10A, and can supply power to the connected sensor unit 22.

  In the noise power recovery system 1, the sensor unit 22 is configured to include a storage area 22b for storing the power supplied from the coil unit 21. With this configuration, the sensor unit 22 can charge the storage battery 22b with the power supplied from the coil unit 21. By this charging, the sensor unit 22 can continue to operate by operating with the power stored in the storage battery 22b when the induced voltage that can be converted from noise is relatively small.

  In the noise power recovery system 1 described above, the coil unit 21 uses a magnetic body 21a having an annular main body portion 21c and an opening 21d opened in the main body portion 21c, and a magnetic flux generated in the magnetic body 21a as an induced voltage. And a convertible coil 21b. With this configuration, the coil unit 21 can be attached to the trunk line 10 by inserting the trunk line 10 into the opening 21 d of the magnetic body 21 a. In addition, the coil unit 21 can form a magnetic path for the magnetic flux of the noise current I generated on the outer periphery of the trunk line 10. The coil unit 21 can supply the sensor unit 22 with noise power corresponding to the induced voltage obtained by converting the magnetic flux of the noise current I generated in the magnetic path of the magnetic body 21 a.

  A vehicle system 100 according to the embodiment includes an inverter 3 and a battery 2 mounted on the vehicle, a sensor unit 22 mounted on the vehicle, and a trunk line 10 wired in the vehicle and electrically connecting the inverter 3 and the battery 2. And a coil unit 21. The coil unit 21 is provided with an opening 21 d into which the trunk line 10 is inserted, generates an electromotive force by electromagnetic induction according to a change in the magnetic field of noise superimposed on the current flowing through the trunk line 10 and supplies electric power to the sensor unit 22 connected. Supply. With this configuration, the vehicle system 100 can achieve the same effects as the above-described noise power recovery system 1.

[Modification]
Next, modifications of the embodiment will be described. Although the coil unit 21 has been described as an example provided on the upstream side of the noise disabled section 30, it is not limited to this. For example, as shown in FIG. 8, the coil unit 21 may be provided on both the upstream side and the downstream side of the noise disabled section 30. In this case, the shielding member 8 is provided in the noise impossible section 30. The coil unit 21 on the upstream side converts a part of the noise into an induced voltage, and flows the current in which the noise remains to the noise disabled section 30 of the trunk 10. The coil unit 21 on the downstream side converts the remaining noise into an induced voltage and passes a current with a suppressed noise to the trunk 10. Thus, the noise power recovery system 1 may be provided with the coil unit 21 separately on both the upstream side and the downstream side of the noise impossible section 30.

  Further, as shown in FIG. 9, in the noise power recovery system 1, the coil unit 21 may be provided in the binding unit 40 in which the trunk line 10 is bundled with another electric wire 7. In the coil unit 21, for example, the trunk 10 and the other electric wire 7 are inserted into the opening 21d, and the bundling portion 40 is formed by positioning the trunk 10 and the other electric wire 7 inside the opening 21d. That is, the coil unit 21 forms the binding portion 40 by surrounding the bundle of the trunk line 10 and the other electric wires 7 from the outside around the axis. The bundling portion 40 may be formed by bundling the trunk line 10 and the other electric wires 7 with a bundling member such as a long bundling band or tape not shown. The other wire 7 is a wire electrically connected to an object different from at least one of the inverter 3 or the battery 2. As described above, the noise power recovery system 1 includes the binding portion 40 in which the other electric wires 7 connected to an object different from at least one of the inverter 3 and the battery 2 are bundled with the trunk 10. Then, in the coil unit 21, the binding portion 40 is inserted into the opening 21 d of the coil unit 21. With this configuration, the noise power recovery system 1 can recover noise power at one place by combining the trunk line 10 and the other wires 7. As a result, since the noise power recovery system 1 can install the coil unit 21 at one place as compared with the case where noise power is recovered separately for the trunk line 10 and the other wires 7 as in the prior art. Installation of the coil unit 21 can be improved. Further, since the noise power recovery system 1 recovers the noise by the coil unit 21, there is no need to separate the respective wires in order to suppress transmission of the noise to the other wires 7, and the wiring performance can be improved.

  Also, the trunk line 10 may be configured to include a communication line. For example, as shown in FIG. 10, the vehicle system 100A includes an electric component (first target) 91 of a traveling system as a vehicle device mounted on a vehicle, and a control unit (second target) 92 for controlling the electric component 91. , Noise power recovery system 1A. The noise power recovery system 1A includes, for example, a communication line 10B and a plurality of detection units 20. The communication line 10 B connects the control unit 92 and the electrical component 91. The communication line 10 B sends a communication signal between the control unit 92 and the electrical component 91. Each detection unit 20 includes a coil unit 21 and a sensor unit 22. The coil unit 21 generates an electromotive force by electromagnetic induction according to a change in the magnetic field of noise superimposed on the current flowing through the communication line 10B, and supplies power to the sensor unit 22 connected. Thus, in the noise power recovery system 1A according to the modification, the trunk line 10 is configured to include the communication line 10B for transmitting and receiving communication signals between the control unit 92 and the electrical component 91. With this configuration, the noise power recovery system 1A can generate an electromotive force by electromagnetic induction according to a change in the magnetic field of noise superimposed on a signal flowing through the communication line 10B, and can supply power to the connected sensor unit 22. .

  Although the coil unit 21 demonstrated the example which supplies electric power to the sensor unit 22 as a load part, it is not limited to this. The coil unit 21 may supply power to load parts of various vehicles such as switches.

  Although the trunk line 10 is illustrated as a wire electrically connecting the first object and the second object, the present invention is not limited to this. The wire electrically connecting the first object and the second object may be, for example, a branch line branched from the trunk line 10.

  Although the other electric wire 7 demonstrated the example which is a low voltage | pressure cable which runs parallel to the trunk line 10, it is not limited to this. The other electric wire 7 may be, for example, a high voltage cable (main line).

1, 1A noise power recovery system (power supply system for vehicles)
2 battery (power supply, second target)
3 Inverter (vehicle equipment, first target)
7 Other electric wire 10 Main line (electric wire)
10A power line (electric wire)
10B communication wire (electric wire)
21, 21A to 21D Coil unit 21a Magnetic body 21b Coil 21c Main body 21d Opening 22 Sensor unit (load unit)
22b Storage battery (power storage unit)
31 parallel running section 32 antenna adjacent section 40 bundling section 91 electrical components (vehicle equipment, first object)
92 Control unit (second target)
100, 100A vehicle system G ground (first target)

Claims (8)

A wire which is arranged in the vehicle and electrically connects the first object and the second object;
A coil unit provided with an opening into which the wire is inserted, generating an electromotive force by electromagnetic induction according to a change in a magnetic field of noise superimposed on a current flowing through the wire, and supplying power to a connected load;
An electric power supply system for a vehicle comprising: A parallel running section in which another electric wire electrically connected to an object different from at least one of the first object and the second object runs parallel to the electric wire, or an antenna transmitting and receiving radio waves is adjacent to the electric wire Antenna adjacent section,
When the current flows from the upstream side to the downstream side of the electric wire, the coil unit is provided on the upstream side with respect to the parallel running section, and is provided on the upstream side with respect to the antenna adjacent section. The power supply system for vehicles according to 1. And a bundling portion in which another electric wire electrically connected to an object different from at least one of the first object and the second object is bundled with the electric wire.
The electric power supply system for vehicles according to claim 1 or 2 by which said binding part is inserted in said opening of said coil unit. The first object includes vehicle equipment or a ground mounted on the vehicle,
The second object is configured to include a power supply,
The power supply system for a vehicle according to any one of claims 1 to 3, wherein the electric wire includes a power line connecting the power supply and the vehicle device or the ground. The first object includes vehicle equipment mounted on the vehicle.
The second object includes a control unit that controls the vehicle device,
The power supply system for a vehicle according to any one of claims 1 to 4, wherein the electric wire includes a communication line for transmitting and receiving a communication signal between the control unit and the vehicle device.   The power supply system for a vehicle according to any one of claims 1 to 5, wherein the load unit includes a power storage unit that stores power supplied from the coil unit.   The coil unit includes a magnetic body having an annular main body portion, the opening portion opened in the main body portion, and a coil capable of converting a magnetic flux generated in the magnetic body into an induced voltage. The electric power supply system for vehicles of any one of Claims 1-6. A first object and a second object mounted on the vehicle;
A load unit mounted on the vehicle;
An electric wire which is arranged in the vehicle and electrically connects the first object and the second object;
A coil unit provided with an opening into which the wire is inserted, generating an electromotive force by electromagnetic induction according to a change in a magnetic field of noise superimposed on a current flowing through the wire, and supplying power to the connected load unit; ,
A vehicle system comprising:

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