WO2021199404A1 - Vehicle-mounted charger - Google Patents

Vehicle-mounted charger Download PDF

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Publication number
WO2021199404A1
WO2021199404A1 PCT/JP2020/015192 JP2020015192W WO2021199404A1 WO 2021199404 A1 WO2021199404 A1 WO 2021199404A1 JP 2020015192 W JP2020015192 W JP 2020015192W WO 2021199404 A1 WO2021199404 A1 WO 2021199404A1
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WO
WIPO (PCT)
Prior art keywords
coil component
common mode
coil
mode choke
vehicle
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Application number
PCT/JP2020/015192
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French (fr)
Japanese (ja)
Inventor
祐輔 邦近
英彦 木下
勇毅 武田
Original Assignee
三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2020/015192 priority Critical patent/WO2021199404A1/en
Publication of WO2021199404A1 publication Critical patent/WO2021199404A1/en

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/09—Filters comprising mutual inductance

Definitions

  • This disclosure relates to an in-vehicle charger for charging a battery for an electric vehicle.
  • In-vehicle chargers that charge batteries that supply power to electric motors for electric vehicles such as EVs (electric vehicles) and PHEVs (plug-in hybrid electric vehicles) are compared because they switch large currents. Large noise is generated.
  • the in-vehicle charger used in an electric vehicle is described in Patent Document 1 in order to suppress such relatively large noise from being transmitted to an external power source such as a general household power source connected to the in-vehicle charger.
  • Common mode choke coil is used.
  • in-vehicle chargers used in electric vehicles are required to be miniaturized for the purpose of securing a living space in the electric vehicle.
  • it is smaller in volume to connect a plurality of common mode choke coils in series instead of one common mode choke coil. Therefore, in the in-vehicle charger, in order to meet the demand for miniaturization, a plurality of common mode choke coils are connected in series to reduce noise generated in the in-vehicle charger and transmitted to an external power source.
  • the noise generated inside the in-vehicle charger includes not only common mode noise but also differential mode noise. Therefore, in addition to the common mode choke coil, a component for reducing differential mode noise, for example, a ferrite bead is required.
  • a component for reducing differential mode noise for example, a ferrite bead is required.
  • the in-vehicle charger is required to be miniaturized, there is a problem that the space for mounting the parts for reducing the noise generated inside the in-vehicle charger is limited.
  • the present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide an in-vehicle charger capable of reducing the number of parts for reducing differential mode noise.
  • the vehicle-mounted charger is a member to which the first common mode choke coil and the first common mode choke coil are fixed, and the lead wire of the first common mode choke coil is the first.
  • a first coil component having a first fixing member provided with a first identification mark indicating a first winding direction, which is a winding direction around the core of the common mode choke coil, and a first common mode choke coil.
  • the second coil component having the second fixing member provided with the second identification mark indicating the second winding direction, which is the winding direction, and the first coil component and the second coil component are adjacent to each other.
  • the first coil component and the second coil component include a substrate arranged in such a manner, and the first coil component and the second coil component have a first winding direction and a second winding direction in a direction in which the first coil component and the second coil component are arranged side by side. They are arranged on the substrate so that the winding direction is opposite to that of the winding direction.
  • the number of parts for reducing differential mode noise can be reduced.
  • FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the first embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged. It is a circuit diagram of the filter circuit of the vehicle-mounted charger according to the first embodiment. It is a figure which shows the path of the common mode noise generated in the circuit of the vehicle-mounted charger which concerns on Embodiment 1.
  • FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the first embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. It is a figure which shows the path of the differential mode noise generated in the circuit of the vehicle-mounted charger which concerns on Embodiment 1.
  • FIG. It is a figure which shows the magnetic flux generated when the current of the differential mode flows through the common mode choke coil. It is a figure which shows the magnetic flux generated when the common mode current flows through the common mode choke coil.
  • FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. 5 is a plan view of a coil component included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil component is arranged.
  • FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. 5 is a plan view showing a state in which three coil parts included in the filter circuit of the vehicle-mounted charger according to the second embodiment are arranged side by side.
  • FIG. 5 is a plan view of a coil component included in a filter circuit of an in-vehicle charger according to another embodiment as viewed from a direction orthogonal to a substrate on which the coil component is arranged.
  • FIG. 5 is a plan view showing a state in which three coil parts included in the filter circuit of the vehicle-mounted charger according to another embodiment are arranged side by side.
  • FIG. 1 is a block diagram showing a vehicle-mounted charger and parts connected to the vehicle-mounted charger according to the first embodiment.
  • FIG. 2 is a block diagram showing a circuit configuration of the vehicle-mounted charger according to the first embodiment.
  • the vehicle-mounted charger 3 is a charger for charging a battery that supplies power to a motor for an electric vehicle such as an EV (electric vehicle) or a PHEV (plug-in hybrid electric vehicle). Yes, it is mounted on the electric vehicle 1.
  • an electric vehicle such as an EV (electric vehicle) or a PHEV (plug-in hybrid electric vehicle).
  • the in-vehicle charger 3 is connected to an external power source 2 such as a commercial AC power source or a private power generator, and an AC current is input from the external power source 2.
  • the vehicle-mounted charger 3 boosts the alternating current input from the external power source 2 and converts it into a direct current, and charges the main battery 4 connected to the output side of the vehicle-mounted charger 3.
  • the electric power stored in the main battery 4 by the in-vehicle charger 3 is supplied to the motor 6 that drives the electric vehicle 1 via the inverter 5, and the PTC heater (Positive Temperature Cooperative heater) mounted on the electric vehicle 1 and the like. It is also supplied to the loads 7 and 8. Further, the vehicle-mounted charger 3 is connected to the controller 9.
  • the controller 9 is connected to the inverter 5 and the motor 6 in addition to the in-vehicle charger 3, and is charged in the vehicle based on the measurement results of the voltage, current, temperature, and the like in the circuit of the in-vehicle charger 3, the inverter 5, and the motor 6. It controls the charger 3, the inverter 5, and the motor 6.
  • the vehicle-mounted charger 3 includes a filter circuit 31, a PFC circuit 32, a DC / AC conversion circuit 33, a transformer 34, an AC / DC conversion circuit 35, and a filter circuit 36.
  • the filter circuit 31 removes a noise component from the alternating current input to the vehicle-mounted charger 3. Then, the alternating current from which noise has been removed by the filter circuit 31 is output to the PFC circuit 32.
  • the PFC circuit 32 is a circuit for the purpose of improving the power factor of the input power.
  • the alternating current input to the PFC circuit 32 is rectified into a unidirectional pulsating current by the rectifier circuit of the PFC circuit 32, and is output to the DC / AC conversion circuit 33.
  • the DC / AC conversion circuit 33 is a full-bridge circuit having four switching elements, converts the pulsating current input from the PFC circuit 32 into a square wave current having a desired frequency, and outputs the current to the transformer 34.
  • the current flowing into the transformer 34 is boosted to a voltage sufficient for charging the main battery 4 while maintaining the state of a square wave, and is output to the AC / DC conversion circuit 35.
  • the current flowing into the AC / DC conversion circuit 35 is converted into a direct current by the AC / DC conversion circuit 35, noise is removed by the filter circuit 36, and the current is output to the main battery 4.
  • the controller 9 connected to the in-vehicle charger 3 controls the switching element inside the PFC circuit 32, the switching element inside the DC / AC conversion circuit 33, and the switching element inside the AC / DC conversion circuit 35.
  • FIG. 3 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the first embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • the filter circuit 31 of the vehicle-mounted charger has a first coil component 311 and a second coil component 312, and the first coil component 311 and the second coil.
  • the component 312 is arranged adjacent to each other on the substrate 51 provided in the vehicle-mounted charger.
  • the surface facing the substrate 51 is referred to as a lower surface, and the surface opposite to the lower surface is referred to as an upper surface.
  • the first coil component 311 has a first common mode choke coil 3110 and a first fixing member 3115.
  • the first common mode choke coil 3110 has a core 3111, a conductor 3112, and a conductor 3113.
  • the core 3111 is a magnetic material such as ferrite forming an annular shape.
  • the conductors 3112 and 3113 are wound around the core 3111.
  • the lead wire 3112 and the lead wire 3113 start at an end located on the opposite side of the core 3111 from the second coil component 312 in the direction from the first coil component 311 to the second coil component 312. It begins to be wound around the core 3111 and crosses the upper surface of the core 3111. After that, the conductors 3112 and 3113 pass through the inside of the ring formed by the core 3111 and head toward the lower surface of the core 3111.
  • the conductors 3112 and 3113 cross the lower surface of the core 3111, pass outside the ring formed by the core 3111, and head toward the upper surface of the core 3111.
  • the conductors 3112 and 3113 that have reached the upper surface of the core 3111 again cross the upper surface of the core 3111, pass through the inside of the ring formed by the core 3111, head toward the lower surface of the core 3111, and then cross the lower surface of the core 3111. It passes through the outside of the ring formed by the core 3111 and faces the upper surface of the core 3111. Following such a path, the conductor wound around the core 3111 a plurality of times finally crosses the lower surface of the core 3111 and separates from the core 3111.
  • the conductors 3112 and 3113 cross the upper surface of the core 3111 and then begin to be wound around the core 3111 and cross the lower surface of the core 3111.
  • the direction in which the conductor 3112 and the conductor 3113 are wound around the core 3111 when the winding is completed is called the first winding direction.
  • the first fixing member 3115 is a case that surrounds the circumference of the first common mode choke coil 3110, and the first common mode choke coil 3110 is fixed. However, the first fixing member 3115 does not cover the upper surface side of the first common mode choke coil 3110. Further, the first fixing member 3115 is provided with the first identification mark 3150. Specifically, the first identification mark 3150 is the closest to the portion where the conductors 3112 and 3113 of the first common mode choke coil 3110 start to be wound around the core 3111 after crossing the upper surface of the core 3111. It is provided on the wall surface of the fixing member 3115 of 1. As a result, the first identification mark 3150 serves as a mark indicating the first winding direction in the first common mode choke coil 3110. The first identification mark 3150 is a convex portion of the first fixing member that projects in the opposite direction to the second coil component 312. In the following, the convex portion that is the first identification mark 3150 will be referred to as the first convex portion.
  • the second coil component 312 has a second common mode choke coil 3120 and a second fixing member 3125.
  • the second common mode choke coil 3120 has a core 3121, a conducting wire 3122, and a conducting wire 3123.
  • the core 3121 is a magnetic material such as ferrite forming an annular shape.
  • the conductors 3122 and 3123 are wound around the core 3121.
  • the conductors 3122 and 3123 begin to be wound around the core 3121 in the direction from the first coil component 311 to the second coil component 312, starting from the end located on the first coil component 311 side. , Crosses the underside of the core 3121. After that, the conductors 3122 and 3123 pass through the inside of the ring formed by the cores 3121 and head toward the upper surface of the cores 3121.
  • the conductors 3122 and 3123 cross the upper surface of the core 3121, pass outside the ring formed by the core 3121, and head toward the lower surface of the core 3121.
  • the conductors 3122 and 3123 that have reached the lower surface of the core 3121 again cross the lower surface of the core 3121, pass through the inside of the ring formed by the core 3121, head toward the upper surface of the core 3121, and then cross the upper surface of the core 3121. It passes through the outside of the ring formed by the core 3121 and faces the lower surface of the core 3121. Following such a path, the conductor wound around the core 3121 a plurality of times finally crosses the upper surface of the core 3121 and separates from the core 3121.
  • the conductors 3122 and 3123 cross the lower surface of the core 3121 and then begin to be wound around the core 3121 and cross the upper surface of the core 3121.
  • the direction in which the conducting wire 3122 and the conducting wire 3123 are wound around the core 3121 when the winding is completed is referred to as a second winding direction.
  • the second winding direction is opposite to the first winding direction in the direction in which the first coil component 311 and the second coil component 312 are lined up.
  • the second fixing member 3125 is a case that surrounds the circumference of the second common mode choke coil 3120, and the second common mode choke coil 3120 is fixed. However, the second fixing member 3125 does not cover the upper surface side of the second common mode choke coil 3120. Further, the second fixing member 3125 is provided with a second identification mark 3250. Specifically, the second identification mark 3250 is closest to the winding end portion where the conductors 3122 and 3123 of the second common mode choke coil 3120 cross the upper surface of the core 3121 and then separate from the core 3121. It is provided on the wall surface of the second fixing member 3125. As a result, the second identification mark serves as a mark indicating the second winding direction in the second common mode choke coil 3120.
  • the second identification mark 3250 is a convex portion of the second fixing member 3125 that projects in the opposite direction to the first coil component 311.
  • the convex portion which is the second identification mark 3250 will be referred to as a second convex portion.
  • the first coil component 311 and the second coil component 312 as described above are arranged so as to be adjacent to each other on the substrate 51 included in the vehicle-mounted charger 3.
  • the first winding direction of the first common mode choke coil 3110 and the second winding of the second common mode choke coil 3120 are performed.
  • the first coil component 311 and the second coil component 312 are arranged on the substrate 51 so that the directions are opposite to each other. Further, in the direction in which the first coil component 311 and the second coil component 312 are lined up, the first winding direction of the first common mode choke coil 3110 and the second winding direction of the second common mode choke coil 3120.
  • the width G of the gap between the first coil component 311 and the second coil component 312 in which the first coil component 311 and the second coil component 312 are arranged on the substrate 51 so as to be opposite to each other is shown in FIG.
  • the height H1 of the first identification mark 3150 which is the first convex portion, more specifically, the first in the direction from the first coil component 311 to the second coil component 312. It is narrower than the height H1 of the identification mark 3150.
  • the width G of the gap is the height H2 of the second identification mark 3250, which is the second convex portion, and more specifically, the width G in the direction from the first coil component 311 to the second coil component 312.
  • the height of the identification mark 3250 of 2 is narrower than H2.
  • the first coil component 311 and the second coil component 312 have the same shape.
  • FIG. 4 is a circuit diagram of the filter circuit of the vehicle-mounted charger according to the first embodiment.
  • the filter circuit 31 of the vehicle-mounted charger 3 according to the first embodiment has a first common mode choke coil 3110 and a second common mode choke coil 3120 as an electric circuit.
  • the first common mode choke coil 3110 included in the first coil component 311 is connected to the second common mode choke coil 3120 included in the second coil component 312 in the order of electrical connection on the external power supply 2 side. Is located in. Further, as shown in FIG. 4, the first common mode choke coil 3110 has two input terminals. Further, the first common mode choke coil 3110 has two output terminals. Then, the voltage signals of L (Live) and N (NEUTRAL) are input to the first common mode choke coil 3110 from the external power supply 2 via the two input terminals. After that, the input voltage signal passes through the first common mode choke coil 3110 and is output from the two output terminals of the first common mode choke coil 3110.
  • the second common mode choke coil 3120 is located on the PFC circuit 32 side in the order of electrical connection with respect to the first common mode choke coil 3110. Further, the second common mode choke coil 3120 has two input terminals as shown in FIG. Further, the second common mode choke coil 3120 has two output terminals. Then, the voltage signal output from the first common mode choke coil 3110 is input to the second common mode choke coil 3120 via these two input terminals. After that, the input voltage signal passes through the second common mode choke coil 3120, is output from the two output terminals of the second common mode choke coil 3120, and goes to the PFC circuit 32.
  • the voltage signal that passed through the first common mode choke coil 3110 and the second common mode choke coil 3120 was reduced to some extent in the differential mode as well as the common mode noise. In the state, it goes to the PFC circuit 32.
  • FIG. 5 is a diagram showing a path of common mode noise generated in the circuit of the vehicle-mounted charger according to the first embodiment. The mechanism of generating common mode noise will be described with reference to FIG.
  • a transformer 34 is mentioned as one of the sources of common mode noise generated in the circuit of the vehicle-mounted charger 3 according to the first embodiment.
  • the noise generated from the transformer 34 propagates to the housing 37 via the first parasitic capacitance 38 generated between the transformer 34 and the housing 37 surrounding the transformer 34 and the like. Further, the noise propagated to the housing 37 propagates to the filter circuit 31 and the like via the second parasitic capacitance 39 generated between the filter circuit 31 and the housing 37. In this way, in the filter circuit 31 and the like, noise having the same phase flows through the power supply lines on the L (Live) side and the N (NEUTRAL) side, and this becomes common mode noise generated in the circuit of the vehicle-mounted charger 3.
  • FIG. 6 is a diagram showing a path of differential mode noise generated in the circuit of the vehicle-mounted charger according to the first embodiment. The mechanism of generating differential mode noise will be described with reference to FIG.
  • One of the sources of differential mode noise generated in the circuit of the vehicle-mounted charger 3 according to the first embodiment is a transistor included in the DC / AC conversion circuit 33 and the like.
  • noise is generated by switching the current with a transistor included in the DC / AC conversion circuit 33.
  • the noise generated by this switching flows as it is to the power supply line in the circuit of the vehicle-mounted charger 3 without passing through the housing 37.
  • noise of opposite phase flows between the power supply line on the L (Live) side and the power supply line on the N (NEUTRAL) side of the filter circuit 31 and the like included in the vehicle-mounted charger 3, and becomes differential mode noise.
  • FIG. 7 is a diagram showing the magnetic flux generated when a differential mode current flows through the common mode choke coil.
  • FIG. 8 is a diagram showing a magnetic flux generated when a common mode current flows through the common mode choke coil.
  • FIG. 9 is an equivalent circuit diagram of a common mode choke coil. In FIGS. 7, 8 and 9, taking the first common mode choke coil 3110 of the first coil component 311 as an example, the effects on the magnetic flux and each noise when the noise (current) of each mode flows. explain.
  • the first common mode choke coil 3110 basically does not function as an inductor with respect to the current in the differential mode.
  • the first common mode choke coil 3110 functions to some extent as an inductor with respect to the current in the differential mode.
  • the first common mode choke coil 3110 exerts a function as an inductor in principle with respect to the current in the common mode.
  • the first common mode choke coil 3110 functions as an inductor to some extent with respect to the differential mode current even when the common mode current flows.
  • the first common mode choke coil 3110 functions as an inductor with respect to the differential mode current in both cases when the differential mode current flows and when the common mode current flows. .. Considering this, the equivalent circuit diagram of the first common mode choke coil 3110 is an inductor 3147 on an ideal common mode choke coil 3146 that functions as a filter only for common mode currents, as shown in FIG. Is a circuit diagram connected in series.
  • FIG. 10 shows the differential mode in which the two common mode choke coils are connected so that the winding directions of the conductors of the two common mode choke coils are opposite in the direction in which the two common mode choke coils are lined up. It is a figure which shows the magnetic flux generated when a current flows.
  • FIG. 11 shows a common mode with two common mode choke coils connected so that the winding directions of the conductors of the two common mode choke coils are opposite in the direction in which the two common mode choke coils are lined up. It is a figure which shows the magnetic flux generated when a current flows.
  • FIG. 11 shows a common mode with two common mode choke coils connected so that the winding directions of the conductors of the two common mode choke coils are opposite in the direction in which the two common mode choke coils are lined up. It is a figure which shows the magnetic flux generated when a current flows.
  • FIG. 12 is an equivalent circuit diagram when two common mode choke coils are connected so that the winding directions of the conductors of the two common mode choke coils are opposite in the direction in which the two common mode choke coils are lined up.
  • FIG. 13 is generated when a differential mode current flows in a state where the winding directions of the conductors of the two common mode choke coils are connected so as to be the same in the direction in which the two common mode choke coils are lined up. It is a figure which shows the magnetic flux.
  • FIG. 14 shows a common mode with two common mode choke coils connected so that the winding directions of the conductors of the two common mode choke coils are the same in the direction in which the two common mode choke coils are lined up.
  • FIG. 15 is an equivalent circuit diagram when two common mode choke coils are connected so that the winding directions of the conductors of the two common mode choke coils are the same in the direction in which the two common mode choke coils are lined up. ..
  • the two common mode choke coils are connected so that the second winding direction, which is the direction in which the lead wire 3123 is wound around the core 3121, is opposite in the direction in which the two common mode choke coils are lined up.
  • the leakage magnetic flux 3144L, the leakage magnetic flux 3144N, the leakage magnetic flux 3244L and the leakage magnetic flux 3244N generated from the two common mode choke coils are hardly coupled.
  • the two connected common-mode choke coils not only function as common-mode choke coils, as if the current of each mode flows through a single common-mode choke coil, but to some extent, the differential mode current. Acts as an inductor.
  • the lead wire 3112 and the lead wire 3113 included in the first common mode choke coil 3110 have a first winding direction in which the lead wire 3113 is wound around the core 3111, and the second common mode choke coil 3120 has. With the two common mode choke coils connected so that the second winding direction, which is the direction in which the lead wire 3122 and the lead wire 3123 are wound around the core 3121, is opposite in the direction in which the two common mode choke coils are lined up.
  • FIG. 12 shows an equivalent circuit diagram when two common mode choke coils are connected so that the second winding direction, which is the winding direction of 3121, is opposite in the direction in which the two common mode choke coils are lined up.
  • an inductor 3147 and an inductor 3148 are connected in series between an ideal common mode choke coil 3146 and a common mode choke coil 3246 that function as a filter only for a common mode current.
  • the two common mode choke coils are connected so that the second winding direction, which is the direction in which the conductor 3122 and the conductor 3123 of the 3120 are wound around the core 3121, is the same in the direction in which the two common mode choke coils are lined up.
  • the leakage magnetic flux 3144L and the leakage magnetic flux 3244L generated from the two common mode choke coils are coupled, and further, the leakage magnetic flux 3144N and the leakage magnetic flux 3244N are coupled.
  • the two connected common mode choke coils function as common mode choke coils, unlike the case where the current of each mode flows through a single common mode choke coil. Almost no function as an inductor.
  • the lead wire 3112 and the lead wire 3113 included in the first common mode choke coil 3110 have a first winding direction in which the lead wire 3113 is wound around the core 3111, and the second common mode choke coil 3120 has. With the two common mode choke coils connected so that the second winding direction, which is the direction in which the lead wire 3122 and the lead wire 3123 are wound around the core 3121, is the same in the direction in which the two common mode choke coils are lined up.
  • FIG. 15 shows an equivalent circuit diagram when two common mode choke coils are connected so that the second winding direction, which is the winding direction of 3121, is the same in the direction in which the two common mode choke coils are lined up.
  • the filter circuit 31 of the vehicle-mounted charger 3 according to the first embodiment has a first winding direction in which the lead wire 3112 and the lead wire 3113 of the first common mode choke coil 3110 are wound around the core 3111, and a first winding direction. Two common modes so that the second winding direction, which is the direction in which the lead wire 3122 and the lead wire 3123 of the two common mode choke coils 3120 are wound around the core 3121, are opposite in the direction in which the two common mode choke coils are lined up. The choke coil is connected. Therefore, the equivalent circuit diagram of the filter circuit 31 of the vehicle-mounted charger 3 according to the first embodiment is shown in FIG. 12 instead of FIG.
  • FIG. 16 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • the number of parts for reducing the differential mode noise can be reduced.
  • the first coil component 311 and the second coil component 312 included in the filter circuit 31 of the vehicle-mounted charger 3 are arranged on the substrate 51 so as to be adjacent to each other. Further, in the filter circuit 31, the first winding direction in which the lead wire of the first common mode choke coil 3110 is wound around the core and the direction in which the lead wire of the second common mode choke coil 3120 is wound around the core.
  • the first coil component 311 and the second coil component 312 are placed on the substrate 51 so that the second winding direction is opposite in the direction in which the first coil component 311 and the second coil component 312 are arranged. They are lined up.
  • the filter circuit 31 not only functions as a common mode choke coil, but also functions as an inductor with respect to the current in the differential mode. Therefore, in the vehicle-mounted charger 3, it is not necessary to add new parts in order to reduce the differential mode noise. That is, in the in-vehicle charger 3, the number of parts for reducing the differential mode noise can be reduced.
  • the first coil component 311 has a first winding direction indicating a first winding direction in which the lead wire of the first common mode choke coil 3110 is wound around the core.
  • An identification mark 3150 is provided, and the second coil component 312 is provided with a second identification mark 3250 indicating a second winding direction in which the lead wire of the second common mode choke coil 3120 is wound around the core.
  • the in-vehicle charger 3 can achieve the effect of reducing the number of parts for reducing the differential mode noise.
  • the first identification mark 3150 indicating the first winding direction which is the direction in which the lead wire of the first common mode choke coil 3110 is wound around the core, is attached to the second coil component 312 in the first fixing member 3115. It is a first convex portion that protrudes in the opposite direction. Further, the height H1 of the first convex portion is the height H1 of the first coil component 311 and the second coil component 312 when the first coil component 311 and the second coil component 312 are arranged on the substrate 51. It is narrower than the width G of the gap.
  • the first identification mark 3150 of the first coil component 311 comes into contact with the second coil component 312. Therefore, in the vehicle-mounted charger 3, the effect of suppressing the erroneous assembly of parts is high as compared with the case where the first identification mark 3150 is a mark applied to, for example, the first fixing member 3115.
  • the second identification mark 3250 indicating the second winding direction which is the direction in which the conducting wire of the second common mode choke coil 3120 is wound around the core, is a second fixing member. It is a second convex portion that protrudes in the direction opposite to the first coil component 311 in the 3125.
  • the height H2 of the second convex portion, which is the second identification mark 3250, is narrower than the width G of the gap between the first coil component 311 and the second coil component 312. Therefore, let's place the second coil component 312 on the substrate 51 so that the first winding direction of the first common mode choke coil 3110 and the second winding direction of the second common mode choke coil 3120 are the same.
  • the second identification mark 3250 of the second coil component 312 comes into contact with the first coil component 311.
  • the second winding direction of the first common mode choke coil 3110 and the second winding direction of the second common mode choke coil 3120 are the same.
  • the coil component 312 of the above cannot be placed on the substrate 51. Therefore, in the vehicle-mounted charger 3, the effect of suppressing the erroneous assembly of parts is higher than in the case where the second identification mark 3250 is a mark applied to the second fixing member 3125.
  • first coil component 311 and the second coil component 312 have the same shape. Therefore, in the vehicle-mounted charger 3, the types of parts can be reduced as compared with the case where the first coil component 311 and the second coil component 312 have different shapes.
  • FIG. 17 is a plan view of the coil component included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil component is arranged.
  • FIG. 18 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. 19 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. 17 is a plan view of the coil component included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil component is arranged.
  • FIG. 18 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil
  • FIG. 20 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. 21 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
  • FIG. 22 is a plan view showing a state in which three coil parts included in the filter circuit of the vehicle-mounted charger according to the second embodiment are arranged side by side.
  • the difference between the vehicle-mounted charger according to the second embodiment and the vehicle-mounted charger according to the first embodiment is the first identification mark and the second identification mark provided on the first coil component according to the second embodiment. This is the second identification mark provided on the coil component. Therefore, the code of the first identification mark according to the second embodiment is set to 3150A, and the code of the second coil component is set to 3250A.
  • the first identification mark 3150A is a portion where the conductors 3112 and 3113 of the first common mode choke coil 3110 cross the lower surface of the core 3111 and separate from the core 3111. It is provided on the wall surface of the first fixing member 3115, which is closest to a certain winding end portion. Further, the first identification mark 3150A is a first convex portion which is a convex portion protruding in the direction in which the first coil component 311 and the second coil component 312 are aligned, and the first coil component 311 and the second. It is composed of a first recess that is recessed in the direction in which the coil component 312 of the above is aligned.
  • the second identification mark 3250A is a portion where the conductors 3122 and 3123 of the second common mode choke coil 3120 start to be wound around the core 3121 after crossing the lower surface of the core 3121. It is provided on the wall surface of the second fixing member 3125, which is closest to the winding start portion. Further, the second identification mark 3250A is a second convex portion which is a convex portion protruding in the direction in which the first coil component 311 and the second coil component 312 are aligned, and the first coil component 311 and the second. It is composed of a second recess that is recessed in the direction in which the coil component 312 of the above is aligned.
  • the first winding direction and the second winding direction are opposite in the direction in which the first coil component 311 and the second coil component 312 are lined up.
  • the first convex portion is located in the second concave portion and the second convex portion is in the first concave portion.
  • the first coil component 311 and the second coil component 312 have the same shape.
  • the filter circuit can be easily assembled as compared with the vehicle-mounted charger according to the first embodiment.
  • the first winding direction and the second winding direction are opposite in the direction in which the first coil component 311 and the second coil component 312 are lined up.
  • the first identification mark 3150 of the first coil component 311 is placed on the first identification mark 3150.
  • the first identification mark 3150 and the second identification mark 3250 come into contact with each other. do. Therefore, in the vehicle-mounted charger according to the first embodiment, the first winding direction and the second winding direction are opposite to each other in the direction in which the first coil component 311 and the second coil component 312 are arranged.
  • the first identification mark 3150 and the second identification mark 3250 come into contact with each other, and the first coil component 311 and the first coil component 311 and the second coil component 312 come into contact with each other.
  • the second coil component 312 may not be attached to the substrate 51.
  • the first identification mark 3150A of the first coil component 311 shown in FIG. 18 is directed to the second coil component 312 side, and the second coil component 312
  • the first identification mark 3150A of the first coil component 311 shown in FIG. 20 is on the opposite side to the second coil component 312.
  • the second identification mark 3250A of the second coil component 312 is directed to the opposite side of the first coil component 311 toward the first coil component 311 and the second coil component.
  • the 312 can be attached to the substrate 51.
  • the filter circuit can be easily assembled as compared with the vehicle-mounted charger according to the first embodiment.
  • the first coil component 311 and the second coil component are provided so that the first winding direction and the second winding direction are the same.
  • the vehicle-mounted charger according to the second embodiment also has the first winding direction and the first winding direction of the first common mode choke coil 3110 when the filter circuit 31 is assembled, similarly to the vehicle-mounted charger according to the first embodiment.
  • the first coil component 311 and the second coil component 312 cannot be placed on the substrate 51 so that the second winding direction of the common mode choke coil 3120 of 2 is the same.
  • the degree of freedom in arranging the coil parts can be improved as compared with the in-vehicle charger according to the first embodiment.
  • the first identification mark 3150A of the first coil component 311 is directed toward the second coil component 312, and the second coil
  • the second identification mark 3250A of the component 312 is directed toward the first coil component 311
  • the first identification mark 3150A of the first coil component 311 is attached to the second coil component 312 as shown in FIG.
  • the first coil component 311 and the first coil component 311 and the first coil component 311 are directed to the opposite side.
  • the coil component 312 of 2 can be attached to the substrate 51.
  • a third coil component 313 having the same shape as the first coil component 311 is added, and three or more are added.
  • the coil components can be arranged on the substrate 51 so as to be adjacent to each other. Therefore, the in-vehicle charger according to the second embodiment can improve the degree of freedom in arranging the coil parts as compared with the in-vehicle charger according to the first embodiment.
  • the in-vehicle charger according to the present disclosure is not limited to the above-described embodiment and can be changed within the scope of the gist thereof.
  • the first identification mark 3150 of the first coil part 311 needs to be a convex portion provided on the first fixing member 3115.
  • it may be a mark applied to the first fixing member 3115.
  • the second identification mark 3250 of the second coil component 312 does not have to be a convex portion provided on the second fixing member 3125, and is, for example, a mark applied to the second fixing member 3125. May be good.
  • the shape of the first coil component 311 and the shape of the second coil component 312 do not have to be the same. Therefore, from the viewpoint of reducing the number of parts for reducing the differential mode noise, the first identification mark 3150 of the first coil part 311 is a mark applied to the first fixing member 3115.
  • the second identification mark 3250 of the second coil component 312 is a convex portion provided on the second fixing member 3125, or when the first identification mark 3150 of the first coil component 311 is the first fixing member 3115. It is also possible that the second identification mark 3250 of the second coil component 312 is a mark applied to the second fixing member 3125. Further, both the first identification mark 3150 of the first coil component 311 and the second identification mark 3250 of the second coil component 312 may be marks applied to each fixing member.
  • the first identification mark 3150 of the first coil component 311 does not have to be provided only on one wall surface of the first fixing member 3115, and the first fixing member of the first coil component 311 has. It may be provided on both surfaces of the 3115, which are located in the direction in which the first coil component 311 and the second coil component 312 are arranged side by side.
  • the second identification mark 3250 of the second coil component 312 also does not need to be provided on only one wall surface of the second fixing member 3125, and the second fixing member 3125 included in the second coil component 312.
  • the first coil component 311 and the second coil component 312 may be provided on both surfaces of the above. At this time, as shown in FIG.
  • the shape of the first identification mark is symmetrical in the direction in which the first coil component 311 and the second coil component 312 are lined up, and further, the first coil component 311 and the second coil component 311 and the second coil component 312 are arranged.
  • a concave portion on one side and a convex portion on the other side in a direction orthogonal to the direction in which the coil parts 312 of the above are arranged, not only two but, for example, the same as the first coil part 311 as shown in FIG. 24.
  • a third coil component 313 of the shape can be added, and three or more coil components can be arranged adjacent to each other on the substrate 51. In addition to this, each embodiment may be combined.
  • 3 In-vehicle charger, 51 board, 311 first coil part, 312 second coil part, 3110 first common mode choke coil, 3111 core, 3112 conductor wire, 3113 conductor wire, 3115 first fixing member, 3150 first Identification mark, 3120, 2nd common mode choke coil, 3121 core, 3122 lead wire, 3123 lead wire, 3125, 2nd fixing member, 3250, 2nd identification mark

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The objective of the present invention is to provide a vehicle-mounted charger with which it is possible to reduce the number of components used to reduce differential mode noise.　A vehicle-mounted charger (3) is provided with a first coil component (311) including a first common mode choke coil (3110) and a first fixed member (3115) provided with a first identification mark (3150) indicating a first winding direction, a second coil component (312) including a second common mode choke coil (3120) and a second fixed member (3125) provided with a second identification mark (3250) indicating a second winding direction, and a base board (51) on which the first coil component (311) and the second coil component (312) are arranged in such a way as to be adjacent to one another, wherein the first coil component (311) and the second coil component (312) are aligned side-by-side on the base board (51) in such a way that the first winding direction and the second winding direction are opposite to one another in the direction in which the first coil component (311) and the second coil component (312) are aligned.

Description

車載充電器In-vehicle charger
　本開示は、電動車両用のバッテリーを充電するための車載充電器に関する。 This disclosure relates to an in-vehicle charger for charging a battery for an electric vehicle.
　ＥＶ（電気自動車）やＰＨＥＶ（プラグインハイブリッド電気自動車）等の電動車両用の電動モータなどに対して電力を供給するバッテリーを充電する車載充電器では、大電流のスイッチングを行っているため、比較的大きなノイズが発生する。このような比較的大きなノイズが車載充電器と接続された家庭用の一般電源などの外部電源に伝わることを抑制するために、電動車両に用いられる車載充電器では、特許文献１に記載のようなコモンモードチョークコイルが使用されている。 In-vehicle chargers that charge batteries that supply power to electric motors for electric vehicles such as EVs (electric vehicles) and PHEVs (plug-in hybrid electric vehicles) are compared because they switch large currents. Large noise is generated. As described in Patent Document 1, the in-vehicle charger used in an electric vehicle is described in Patent Document 1 in order to suppress such relatively large noise from being transmitted to an external power source such as a general household power source connected to the in-vehicle charger. Common mode choke coil is used.
特開２０１０－２７６５５号公報Japanese Unexamined Patent Publication No. 2010-27655
　ところで、電動車両に用いられる車載充電器では、電動車両内での居住空間を確保する目的から、小型化が求められている。ここで、所望のノイズを除去する性能を得るために、１つのコモンモードチョークコイルではなく、複数のコモンモードチョークコイルを直列に接続した方が、体積的には小さくなる。そこで、車載充電器では、小型化の要請に応えるために、複数のコモンモードチョークコイルを直列に接続して、車載充電器内で発生して外部電源に伝わろうとするノイズを低減している。 By the way, in-vehicle chargers used in electric vehicles are required to be miniaturized for the purpose of securing a living space in the electric vehicle. Here, in order to obtain the performance of removing desired noise, it is smaller in volume to connect a plurality of common mode choke coils in series instead of one common mode choke coil. Therefore, in the in-vehicle charger, in order to meet the demand for miniaturization, a plurality of common mode choke coils are connected in series to reduce noise generated in the in-vehicle charger and transmitted to an external power source.
　ただし、車載充電器内部で発生するノイズは、コモンモードノイズだけでなく、ディファレンシャルモードノイズも発生する。従って、コモンモードチョークコイル以外にもディファレンシャルモードノイズを低減するための部品、例えば、フェライトビーズが必要になる。しかし、車載充電器には小型化が求められているため、車載充電器内部で発生するノイズを低減するための部品を搭載するスペースに限りがあるという課題があった。 However, the noise generated inside the in-vehicle charger includes not only common mode noise but also differential mode noise. Therefore, in addition to the common mode choke coil, a component for reducing differential mode noise, for example, a ferrite bead is required. However, since the in-vehicle charger is required to be miniaturized, there is a problem that the space for mounting the parts for reducing the noise generated inside the in-vehicle charger is limited.
　本開示は、上記の課題を解決するためになされたもので、ディファレンシャルモードノイズを低減するための部品の点数を削減できる車載充電器を提供することを目的とする。 The present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide an in-vehicle charger capable of reducing the number of parts for reducing differential mode noise.
　本開示の一形態に係る車載充電器は、第１のコモンモードチョークコイル、及び第１のコモンモードチョークコイルが固定される部材であって、第１のコモンモードチョークコイルの導線が第１のコモンモードチョークコイルのコアに巻かれる方向である第１の巻き方向を示す第１の識別マークが設けられた第１の固定部材を有する第１のコイル部品と、第１のコモンモードチョークコイルと電気的に接続された第２のコモンモードチョークコイル、及び第２のコモンモードチョークコイルが固定される部材であって、第２のコモンモードチョークコイルの導線が第２のコモンモードチョークコイルのコアに巻かれる方向である第２の巻き方向を示す第２の識別マークが設けられた第２の固定部材を有する第２のコイル部品と、第１のコイル部品及び第２のコイル部品が隣り合うように配置される基板と、を備え、第１のコイル部品と第２のコイル部品とは、第１のコイル部品と第２のコイル部品とが並ぶ方向において第１の巻き方向と第２の巻き方向とが反対になるように基板に並べられている。 The vehicle-mounted charger according to one embodiment of the present disclosure is a member to which the first common mode choke coil and the first common mode choke coil are fixed, and the lead wire of the first common mode choke coil is the first. A first coil component having a first fixing member provided with a first identification mark indicating a first winding direction, which is a winding direction around the core of the common mode choke coil, and a first common mode choke coil. A member to which the electrically connected second common mode choke coil and the second common mode choke coil are fixed, and the lead wire of the second common mode choke coil is the core of the second common mode choke coil. The second coil component having the second fixing member provided with the second identification mark indicating the second winding direction, which is the winding direction, and the first coil component and the second coil component are adjacent to each other. The first coil component and the second coil component include a substrate arranged in such a manner, and the first coil component and the second coil component have a first winding direction and a second winding direction in a direction in which the first coil component and the second coil component are arranged side by side. They are arranged on the substrate so that the winding direction is opposite to that of the winding direction.
　上記のように構成された車載充電器では、ディファレンシャルモードノイズを低減するための部品の点数を削減できる。 In the in-vehicle charger configured as described above, the number of parts for reducing differential mode noise can be reduced.
実施の形態１に係る車載充電器と車載充電器に接続される部品を示すブロック図である。It is a block diagram which shows the vehicle-mounted charger and the component connected to the vehicle-mounted charger according to the first embodiment. 実施の形態１に係る車載充電器の回路構成を示すブロック図である。It is a block diagram which shows the circuit structure of the vehicle-mounted charger which concerns on Embodiment 1. FIG. 実施の形態１に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the first embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged. 実施の形態１に係る車載充電器のフィルタ回路の回路図である。It is a circuit diagram of the filter circuit of the vehicle-mounted charger according to the first embodiment. 実施の形態１に係る車載充電器の回路内で発生するコモンモードノイズの経路を示す図である。It is a figure which shows the path of the common mode noise generated in the circuit of the vehicle-mounted charger which concerns on Embodiment 1. FIG. 実施の形態１に係る車載充電器の回路内で発生するディファレンシャルモードノイズの経路を示す図である。It is a figure which shows the path of the differential mode noise generated in the circuit of the vehicle-mounted charger which concerns on Embodiment 1. FIG. コモンモードチョークコイルにディファレンシャルモードの電流が流れた際に発生する磁束を示す図である。It is a figure which shows the magnetic flux generated when the current of the differential mode flows through the common mode choke coil. コモンモードチョークコイルにコモンモードの電流が流れた際に発生する磁束を示す図である。It is a figure which shows the magnetic flux generated when the common mode current flows through the common mode choke coil. コモンモードチョークコイルの等価回路図である。It is an equivalent circuit diagram of a common mode choke coil. ２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続された状態で、ディファレンシャルモードの電流が流れた際に発生する磁束を示す図である。The differential mode current flowed with the two common mode choke coils connected so that the winding directions of the conductors of the two common mode choke coils were opposite in the direction in which the two common mode choke coils were lined up. It is a figure which shows the magnetic flux generated at the time. ２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続された状態で、コモンモードの電流が流れた際に発生する磁束を示す図である。A common mode current flowed in a state where the two common mode choke coils were connected so that the winding directions of the conductors of the two common mode choke coils were opposite in the direction in which the two common mode choke coils were lined up. It is a figure which shows the magnetic flux generated at the time. ２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続された場合の等価回路図である。It is an equivalent circuit diagram when two common mode choke coils are connected so that the winding direction of the conducting wire which two common mode choke coils have is opposite in the direction which two common mode choke coils are lined up. ２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において同じとなるように、２つのコモンモードチョークコイルが接続された状態で、ディファレンシャルモードの電流が流れた際に発生する磁束を示す図である。The differential mode current flowed while the two common mode choke coils were connected so that the winding direction of the conductors of the two common mode choke coils was the same in the direction in which the two common mode choke coils were lined up. It is a figure which shows the magnetic flux generated at the time. ２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において同じとなるように、２つのコモンモードチョークコイルが接続された状態で、コモンモードの電流が流れた際に発生する磁束を示す図である。A common mode current flowed in a state where the two common mode choke coils were connected so that the winding direction of the conductors of the two common mode choke coils was the same in the direction in which the two common mode choke coils were lined up. It is a figure which shows the magnetic flux generated at the time. ２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において同じとなるように２つのコモンモードチョークコイルが接続された場合の等価回路図である。It is an equivalent circuit diagram when two common mode choke coils are connected so that the winding direction of the conducting wire which two common mode choke coils have is the same in the direction in which two common mode choke coils are lined up. 比較例に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged. 実施の形態２に係る車載充電器のフィルタ回路が有するコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。FIG. 5 is a plan view of a coil component included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil component is arranged. 実施の形態２に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged. 比較例に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged. 実施の形態２に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged. 比較例に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。FIG. 5 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged. 実施の形態２に係る車載充電器のフィルタ回路が有するコイル部品を、３つ並べた状態を示す平面図である。FIG. 5 is a plan view showing a state in which three coil parts included in the filter circuit of the vehicle-mounted charger according to the second embodiment are arranged side by side. 他の実施の形態に係る車載充電器のフィルタ回路が有するコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。FIG. 5 is a plan view of a coil component included in a filter circuit of an in-vehicle charger according to another embodiment as viewed from a direction orthogonal to a substrate on which the coil component is arranged. 他の実施の形態に係る車載充電器のフィルタ回路が有するコイル部品を、３つ並べた状態を示す平面図である。FIG. 5 is a plan view showing a state in which three coil parts included in the filter circuit of the vehicle-mounted charger according to another embodiment are arranged side by side.
　以下で、一実施形態である車載充電器について、添付した図面を参照しながら説明する。各実施の形態において同一の構成については、同一の符号を付す。 Hereinafter, the in-vehicle charger, which is one embodiment, will be described with reference to the attached drawings. The same reference numerals are given to the same configurations in each embodiment.
　実施の形態１．
　図１は、実施の形態１に係る車載充電器と車載充電器に接続される部品を示すブロック図である。図２は、実施の形態１に係る車載充電器の回路構成を示すブロック図である。 Embodiment 1.
FIG. 1 is a block diagram showing a vehicle-mounted charger and parts connected to the vehicle-mounted charger according to the first embodiment. FIG. 2 is a block diagram showing a circuit configuration of the vehicle-mounted charger according to the first embodiment.
　実施の形態１に係る車載充電器３は、ＥＶ（電気自動車）やＰＨＥＶ（プラグインハイブリッド電気自動車）等の電動車両用のモータなどに対して電力を供給するバッテリーを充電するための充電器であり、電動車両１に搭載される。 The vehicle-mounted charger 3 according to the first embodiment is a charger for charging a battery that supplies power to a motor for an electric vehicle such as an EV (electric vehicle) or a PHEV (plug-in hybrid electric vehicle). Yes, it is mounted on the electric vehicle 1.
　図１に示すように、車載充電器３には、商用交流電源や自家発電機などである外部電源２と接続され、外部電源２から交流電流が入力される。車載充電器３は、外部電源２から入力された交流電流を昇圧して直流電流に変換し、車載充電器３の出力側に接続されたメインバッテリー４を充電する。車載充電器３によってメインバッテリー４に蓄えられた電力は、インバータ５を介して電動車両１を駆動するモータ６に供給されるとともに、電動車両１に搭載されたＰＴＣヒータ（Ｐｏｓｉｔｉｖｅ　Ｔｅｍｐｅｒａｔｕｒｅ　Ｃｏｅｆｆｉｃｉｅｎｔヒータ）などの負荷７，８にも供給される。また、車載充電器３は、コントローラ９と接続されている。コントローラ９は、車載充電器３以外にも、インバータ５及びモータ６とも接続され、車載充電器３、インバータ５及びモータ６が有する回路における電圧、電流及び温度などの計測結果を基に、車載充電器３、インバータ５及びモータ６を制御する。 As shown in FIG. 1, the in-vehicle charger 3 is connected to an external power source 2 such as a commercial AC power source or a private power generator, and an AC current is input from the external power source 2. The vehicle-mounted charger 3 boosts the alternating current input from the external power source 2 and converts it into a direct current, and charges the main battery 4 connected to the output side of the vehicle-mounted charger 3. The electric power stored in the main battery 4 by the in-vehicle charger 3 is supplied to the motor 6 that drives the electric vehicle 1 via the inverter 5, and the PTC heater (Positive Temperature Cooperative heater) mounted on the electric vehicle 1 and the like. It is also supplied to the loads 7 and 8. Further, the vehicle-mounted charger 3 is connected to the controller 9. The controller 9 is connected to the inverter 5 and the motor 6 in addition to the in-vehicle charger 3, and is charged in the vehicle based on the measurement results of the voltage, current, temperature, and the like in the circuit of the in-vehicle charger 3, the inverter 5, and the motor 6. It controls the charger 3, the inverter 5, and the motor 6.
　図２に示すように、車載充電器３は、フィルタ回路３１、ＰＦＣ回路３２、ＤＣ／ＡＣ変換回路３３、トランス３４、ＡＣ／ＤＣ変換回路３５、及びフィルタ回路３６を備えている。フィルタ回路３１は、車載充電器３に入力された交流電流からノイズ成分を取り除く。そして、フィルタ回路３１でノイズが取り除かれた交流電流は、ＰＦＣ回路３２に出力される。ＰＦＣ回路３２は、入力された電力の力率改善を目的とする回路である。ＰＦＣ回路３２に入力された交流電流は、ＰＦＣ回路３２が有する整流回路により、一方向の脈流電流に整流され、ＤＣ／ＡＣ変換回路３３に出力される。ＤＣ／ＡＣ変換回路３３は、４つのスイッチング素子を有するフルブリッジ回路であり、ＰＦＣ回路３２から入力された脈流電流を所望の周波数の矩形波の電流に変換し、トランス３４に出力する。トランス３４に流入した電流は、矩形波の状態を保ったまま、メインバッテリー４の充電に対して十分な電圧まで昇圧され、ＡＣ／ＤＣ変換回路３５に出力される。ＡＣ／ＤＣ変換回路３５に流入した電流は、ＡＣ／ＤＣ変換回路３５で直流の電流に変換された後、フィルタ回路３６でノイズが除去されて、メインバッテリー４に出力される。なお、車載充電器３と接続されたコントローラ９は、ＰＦＣ回路３２内部のスイッチング素子、ＤＣ／ＡＣ変換回路３３内部のスイッチング素子及びＡＣ／ＤＣ変換回路３５内部のスイッチング素子を制御している。 As shown in FIG. 2, the vehicle-mounted charger 3 includes a filter circuit 31, a PFC circuit 32, a DC / AC conversion circuit 33, a transformer 34, an AC / DC conversion circuit 35, and a filter circuit 36. The filter circuit 31 removes a noise component from the alternating current input to the vehicle-mounted charger 3. Then, the alternating current from which noise has been removed by the filter circuit 31 is output to the PFC circuit 32. The PFC circuit 32 is a circuit for the purpose of improving the power factor of the input power. The alternating current input to the PFC circuit 32 is rectified into a unidirectional pulsating current by the rectifier circuit of the PFC circuit 32, and is output to the DC / AC conversion circuit 33. The DC / AC conversion circuit 33 is a full-bridge circuit having four switching elements, converts the pulsating current input from the PFC circuit 32 into a square wave current having a desired frequency, and outputs the current to the transformer 34. The current flowing into the transformer 34 is boosted to a voltage sufficient for charging the main battery 4 while maintaining the state of a square wave, and is output to the AC / DC conversion circuit 35. The current flowing into the AC / DC conversion circuit 35 is converted into a direct current by the AC / DC conversion circuit 35, noise is removed by the filter circuit 36, and the current is output to the main battery 4. The controller 9 connected to the in-vehicle charger 3 controls the switching element inside the PFC circuit 32, the switching element inside the DC / AC conversion circuit 33, and the switching element inside the AC / DC conversion circuit 35.
　図３は、実施の形態１に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。 FIG. 3 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the first embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
　実施の形態１に係る車載充電器のフィルタ回路３１は、図３に示すように、第１のコイル部品３１１及び第２のコイル部品３１２を有し、第１のコイル部品３１１と第２のコイル部品３１２とは、隣り合うように車載充電器が備える基板５１上に配置されている。なお、以下では、各部品において、基板５１と対向する面を下面、下面と反対側の面を上面と称する。 As shown in FIG. 3, the filter circuit 31 of the vehicle-mounted charger according to the first embodiment has a first coil component 311 and a second coil component 312, and the first coil component 311 and the second coil. The component 312 is arranged adjacent to each other on the substrate 51 provided in the vehicle-mounted charger. In the following, in each component, the surface facing the substrate 51 is referred to as a lower surface, and the surface opposite to the lower surface is referred to as an upper surface.
　第１のコイル部品３１１は、第１のコモンモードチョークコイル３１１０及び第１の固定部材３１１５を有する。 The first coil component 311 has a first common mode choke coil 3110 and a first fixing member 3115.
　第１のコモンモードチョークコイル３１１０は、コア３１１１、導線３１１２及び導線３１１３を有する。コア３１１１は、環状を成すフェライトなどの磁性体である。導線３１１２及び導線３１１３は、コア３１１１に巻かれている。ここで、導線３１１２及び導線３１１３は、第１のコイル部品３１１から第２のコイル部品３１２に向かう方向において、コア３１１１を挟んで第２のコイル部品３１２と反対側に位置する端部を開始点としてコア３１１１に巻かれ始め、コア３１１１の上面を横切る。その後、導線３１１２及び導線３１１３は、コア３１１１が成す環の内側を通って、コア３１１１の下面に向かう。そして、導線３１１２及び導線３１１３は、コア３１１１の下面を横切って、コア３１１１が成す環の外側を通って、コア３１１１の上面に向かう。コア３１１１の上面に到達した導線３１１２及び導線３１１３は、再び、コア３１１１の上面を横切り、コア３１１１が成す環の内側を通って、コア３１１１の下面に向かった後、コア３１１１の下面を横切り、コア３１１１が成す環の外側を通って、コア３１１１の上面に向かう。このような経路をたどって、コア３１１１に複数回巻かれた導線は、最終的に、コア３１１１の下面を横切って、コア３１１１から離れる。このように、第１のコイル部品３１１から第２のコイル部品３１２に向かう方向において、導線３１１２及び導線３１１３が、コア３１１１の上面を横切ってからコア３１１１に巻かれ始め、コア３１１１の下面を横切って巻かれ終わる場合の、導線３１１２及び導線３１１３がコア３１１１に巻かれる方向を、第１の巻き方向と呼ぶ。 The first common mode choke coil 3110 has a core 3111, a conductor 3112, and a conductor 3113. The core 3111 is a magnetic material such as ferrite forming an annular shape. The conductors 3112 and 3113 are wound around the core 3111. Here, the lead wire 3112 and the lead wire 3113 start at an end located on the opposite side of the core 3111 from the second coil component 312 in the direction from the first coil component 311 to the second coil component 312. It begins to be wound around the core 3111 and crosses the upper surface of the core 3111. After that, the conductors 3112 and 3113 pass through the inside of the ring formed by the core 3111 and head toward the lower surface of the core 3111. Then, the conductors 3112 and 3113 cross the lower surface of the core 3111, pass outside the ring formed by the core 3111, and head toward the upper surface of the core 3111. The conductors 3112 and 3113 that have reached the upper surface of the core 3111 again cross the upper surface of the core 3111, pass through the inside of the ring formed by the core 3111, head toward the lower surface of the core 3111, and then cross the lower surface of the core 3111. It passes through the outside of the ring formed by the core 3111 and faces the upper surface of the core 3111. Following such a path, the conductor wound around the core 3111 a plurality of times finally crosses the lower surface of the core 3111 and separates from the core 3111. In this way, in the direction from the first coil component 311 to the second coil component 312, the conductors 3112 and 3113 cross the upper surface of the core 3111 and then begin to be wound around the core 3111 and cross the lower surface of the core 3111. The direction in which the conductor 3112 and the conductor 3113 are wound around the core 3111 when the winding is completed is called the first winding direction.
　第１の固定部材３１１５は、第１のコモンモードチョークコイル３１１０の周囲を囲むケースであり、第１のコモンモードチョークコイル３１１０が固定されている。ただし、第１の固定部材３１１５は、第１のコモンモードチョークコイル３１１０の上面側は覆っていない。また、第１の固定部材３１１５には、第１の識別マーク３１５０が設けられている。具体的には、第１の識別マーク３１５０は、第１のコモンモードチョークコイル３１１０の導線３１１２及び導線３１１３が、コア３１１１の上面を横切ってからコア３１１１に巻かれ始める部分と最も近接する、第１の固定部材３１１５の壁面に設けられている。これにより、第１の識別マーク３１５０は、第１のコモンモードチョークコイル３１１０における第１の巻き方向を示す目印となる。また、第１の識別マーク３１５０は、第１の固定部材における第２のコイル部品３１２に対して反対方向に突出する凸部である。なお、以下で、第１の識別マーク３１５０である凸部を、第１の凸部と称する。 The first fixing member 3115 is a case that surrounds the circumference of the first common mode choke coil 3110, and the first common mode choke coil 3110 is fixed. However, the first fixing member 3115 does not cover the upper surface side of the first common mode choke coil 3110. Further, the first fixing member 3115 is provided with the first identification mark 3150. Specifically, the first identification mark 3150 is the closest to the portion where the conductors 3112 and 3113 of the first common mode choke coil 3110 start to be wound around the core 3111 after crossing the upper surface of the core 3111. It is provided on the wall surface of the fixing member 3115 of 1. As a result, the first identification mark 3150 serves as a mark indicating the first winding direction in the first common mode choke coil 3110. The first identification mark 3150 is a convex portion of the first fixing member that projects in the opposite direction to the second coil component 312. In the following, the convex portion that is the first identification mark 3150 will be referred to as the first convex portion.
　第２のコイル部品３１２は、第２のコモンモードチョークコイル３１２０及び第２の固定部材３１２５を有する。 The second coil component 312 has a second common mode choke coil 3120 and a second fixing member 3125.
　第２のコモンモードチョークコイル３１２０は、コア３１２１、導線３１２２及び導線３１２３を有する。コア３１２１は、環状を成すフェライトなどの磁性体である。導線３１２２及び導線３１２３は、コア３１２１に巻かれている。ここで、導線３１２２及び導線３１２３は、第１のコイル部品３１１から第２のコイル部品３１２に向かう方向において、第１のコイル部品３１１側に位置する端部を開始点としてコア３１２１に巻かれ始め、コア３１２１の下面を横切る。その後、導線３１２２及び導線３１２３は、コア３１２１が成す環の内側を通って、コア３１２１の上面に向かう。そして、導線３１２２及び導線３１２３は、コア３１２１の上面を横切って、コア３１２１が成す環の外側を通って、コア３１２１の下面に向かう。コア３１２１の下面に到達した導線３１２２及び導線３１２３は、再び、コア３１２１の下面を横切り、コア３１２１が成す環の内側を通って、コア３１２１の上面に向かった後、コア３１２１の上面を横切り、コア３１２１が成す環の外側を通って、コア３１２１の下面に向かう。このような経路をたどって、コア３１２１に複数回巻かれた導線は、最終的に、コア３１２１の上面を横切って、コア３１２１から離れる。このように、第１のコイル部品３１１から第２のコイル部品３１２に向かう方向において、導線３１２２及び導線３１２３が、コア３１２１の下面を横切ってからコア３１２１に巻かれ始め、コア３１２１の上面を横切って巻かれ終わる場合の、導線３１２２及び導線３１２３がコア３１２１に巻かれる方向を、第２の巻き方向と呼ぶ。そして、第２の巻き方向は、第１のコイル部品３１１と第２のコイル部品３１２とが並ぶ方向において、第１の巻き方向と反対である。 The second common mode choke coil 3120 has a core 3121, a conducting wire 3122, and a conducting wire 3123. The core 3121 is a magnetic material such as ferrite forming an annular shape. The conductors 3122 and 3123 are wound around the core 3121. Here, the conductors 3122 and 3123 begin to be wound around the core 3121 in the direction from the first coil component 311 to the second coil component 312, starting from the end located on the first coil component 311 side. , Crosses the underside of the core 3121. After that, the conductors 3122 and 3123 pass through the inside of the ring formed by the cores 3121 and head toward the upper surface of the cores 3121. Then, the conductors 3122 and 3123 cross the upper surface of the core 3121, pass outside the ring formed by the core 3121, and head toward the lower surface of the core 3121. The conductors 3122 and 3123 that have reached the lower surface of the core 3121 again cross the lower surface of the core 3121, pass through the inside of the ring formed by the core 3121, head toward the upper surface of the core 3121, and then cross the upper surface of the core 3121. It passes through the outside of the ring formed by the core 3121 and faces the lower surface of the core 3121. Following such a path, the conductor wound around the core 3121 a plurality of times finally crosses the upper surface of the core 3121 and separates from the core 3121. In this way, in the direction from the first coil component 311 to the second coil component 312, the conductors 3122 and 3123 cross the lower surface of the core 3121 and then begin to be wound around the core 3121 and cross the upper surface of the core 3121. The direction in which the conducting wire 3122 and the conducting wire 3123 are wound around the core 3121 when the winding is completed is referred to as a second winding direction. The second winding direction is opposite to the first winding direction in the direction in which the first coil component 311 and the second coil component 312 are lined up.
　第２の固定部材３１２５は、第２のコモンモードチョークコイル３１２０の周囲を囲むケースであり、第２のコモンモードチョークコイル３１２０が固定されている。ただし、第２の固定部材３１２５は、第２のコモンモードチョークコイル３１２０の上面側は覆っていない。また、第２の固定部材３１２５には、第２の識別マーク３２５０が設けられている。具体的には、第２の識別マーク３２５０は、第２のコモンモードチョークコイル３１２０の導線３１２２及び導線３１２３が、コア３１２１の上面を横切ってからコア３１２１から離れる部分である巻き終わり部分と最も近接する、第２の固定部材３１２５の壁面に設けられている。これにより、第２の識別マークは、第２のコモンモードチョークコイル３１２０における第２の巻き方向を示す目印となる。また、第２の識別マーク３２５０は、第２の固定部材３１２５における第１のコイル部品３１１に対して反対方向に突出する凸部である。なお、以下で、第２の識別マーク３２５０である凸部を、第２の凸部と称する。 The second fixing member 3125 is a case that surrounds the circumference of the second common mode choke coil 3120, and the second common mode choke coil 3120 is fixed. However, the second fixing member 3125 does not cover the upper surface side of the second common mode choke coil 3120. Further, the second fixing member 3125 is provided with a second identification mark 3250. Specifically, the second identification mark 3250 is closest to the winding end portion where the conductors 3122 and 3123 of the second common mode choke coil 3120 cross the upper surface of the core 3121 and then separate from the core 3121. It is provided on the wall surface of the second fixing member 3125. As a result, the second identification mark serves as a mark indicating the second winding direction in the second common mode choke coil 3120. The second identification mark 3250 is a convex portion of the second fixing member 3125 that projects in the opposite direction to the first coil component 311. In the following, the convex portion which is the second identification mark 3250 will be referred to as a second convex portion.
　以上のような第１のコイル部品３１１及び第２のコイル部品３１２は、前述のとおり、車載充電器３が備える基板５１上に隣り合うように配置されている。このとき、第１のコイル部品３１１と第２のコイル部品３１２とが並ぶ方向において、第１のコモンモードチョークコイル３１１０の第１の巻き方向と第２のコモンモードチョークコイル３１２０の第２の巻き方向とが反対となるように、第１のコイル部品３１１及び第２のコイル部品３１２は、基板５１に並べられている。また、第１のコイル部品３１１と第２のコイル部品３１２とが並ぶ方向において、第１のコモンモードチョークコイル３１１０の第１の巻き方向と第２のコモンモードチョークコイル３１２０の第２の巻き方向とが反対となるように第１のコイル部品３１１及び第２のコイル部品３１２が基板５１に並べられた、第１のコイル部品３１１と第２のコイル部品３１２との隙間の幅Ｇは、図３に示すように、第１の凸部である第１の識別マーク３１５０の高さＨ１、より具体的には、第１のコイル部品３１１から第２のコイル部品３１２に向かう方向における第１の識別マーク３１５０の高さＨ１よりも狭い。また、隙間の幅Ｇは、第２の凸部である第２の識別マーク３２５０の高さＨ２、より具体的には、第１のコイル部品３１１から第２のコイル部品３１２に向かう方向における第２の識別マーク３２５０の高さＨ２よりも狭い。さらに、第１のコイル部品３１１と第２のコイル部品３１２とは、同じ形状である。 As described above, the first coil component 311 and the second coil component 312 as described above are arranged so as to be adjacent to each other on the substrate 51 included in the vehicle-mounted charger 3. At this time, in the direction in which the first coil component 311 and the second coil component 312 are lined up, the first winding direction of the first common mode choke coil 3110 and the second winding of the second common mode choke coil 3120 are performed. The first coil component 311 and the second coil component 312 are arranged on the substrate 51 so that the directions are opposite to each other. Further, in the direction in which the first coil component 311 and the second coil component 312 are lined up, the first winding direction of the first common mode choke coil 3110 and the second winding direction of the second common mode choke coil 3120. The width G of the gap between the first coil component 311 and the second coil component 312 in which the first coil component 311 and the second coil component 312 are arranged on the substrate 51 so as to be opposite to each other is shown in FIG. As shown in 3, the height H1 of the first identification mark 3150, which is the first convex portion, more specifically, the first in the direction from the first coil component 311 to the second coil component 312. It is narrower than the height H1 of the identification mark 3150. Further, the width G of the gap is the height H2 of the second identification mark 3250, which is the second convex portion, and more specifically, the width G in the direction from the first coil component 311 to the second coil component 312. The height of the identification mark 3250 of 2 is narrower than H2. Further, the first coil component 311 and the second coil component 312 have the same shape.
　図４は、実施の形態１に係る車載充電器のフィルタ回路の回路図である。実施の形態１に係る車載充電器３のフィルタ回路３１は、電気回路としては、第１のコモンモードチョークコイル３１１０と第２のコモンモードチョークコイル３１２０を有する。 FIG. 4 is a circuit diagram of the filter circuit of the vehicle-mounted charger according to the first embodiment. The filter circuit 31 of the vehicle-mounted charger 3 according to the first embodiment has a first common mode choke coil 3110 and a second common mode choke coil 3120 as an electric circuit.
　第１のコイル部品３１１が有する第１のコモンモードチョークコイル３１１０は、第２のコイル部品３１２が有する第２のコモンモードチョークコイル３１２０に対して、電気的な接続の順番において、外部電源２側に位置している。また、図４に示すように、第１のコモンモードチョークコイル３１１０は、２つの入力端子を有している。さらに、第１のコモンモードチョークコイル３１１０は、２つの出力端子を有している。そして、２つの入力端子を介して、外部電源２からＬ（ＬＩＶＥ）及びＮ（ＮＥＵＴＲＡＬ）の電圧信号が、第１のコモンモードチョークコイル３１１０に入力される。その後、入力された電圧信号は、第１のコモンモードチョークコイル３１１０を通過して、第１のコモンモードチョークコイル３１１０が有する２つの出力端子から出力される。 The first common mode choke coil 3110 included in the first coil component 311 is connected to the second common mode choke coil 3120 included in the second coil component 312 in the order of electrical connection on the external power supply 2 side. Is located in. Further, as shown in FIG. 4, the first common mode choke coil 3110 has two input terminals. Further, the first common mode choke coil 3110 has two output terminals. Then, the voltage signals of L (Live) and N (NEUTRAL) are input to the first common mode choke coil 3110 from the external power supply 2 via the two input terminals. After that, the input voltage signal passes through the first common mode choke coil 3110 and is output from the two output terminals of the first common mode choke coil 3110.
　第２のコモンモードチョークコイル３１２０は、第１のコモンモードチョークコイル３１１０に対して、電気的な接続の順番において、ＰＦＣ回路３２側に位置している。また、第２のコモンモードチョークコイル３１２０は、図４に示すように、２つの入力端子を有している。さらに、第２のコモンモードチョークコイル３１２０は、２つの出力端子を有している。そして、これら２つの入力端子を介して、第１のコモンモードチョークコイル３１１０から出力された電圧信号が、第２のコモンモードチョークコイル３１２０に入力される。その後、入力された電圧信号は、第２のコモンモードチョークコイル３１２０を通過して、第２のコモンモードチョークコイル３１２０が有する２つの出力端子から出力され、ＰＦＣ回路３２に向かう。なお、第１のコモンモードチョークコイル３１１０及び第２のコモンモードチョークコイル３１２０を通過した電圧信号、つまり、フィルタ回路３１を通過した電圧信号は、コモンモードノイズとともにディファレンシャルモードのノイズもある程度低減された状態で、ＰＦＣ回路３２に向かう。 The second common mode choke coil 3120 is located on the PFC circuit 32 side in the order of electrical connection with respect to the first common mode choke coil 3110. Further, the second common mode choke coil 3120 has two input terminals as shown in FIG. Further, the second common mode choke coil 3120 has two output terminals. Then, the voltage signal output from the first common mode choke coil 3110 is input to the second common mode choke coil 3120 via these two input terminals. After that, the input voltage signal passes through the second common mode choke coil 3120, is output from the two output terminals of the second common mode choke coil 3120, and goes to the PFC circuit 32. The voltage signal that passed through the first common mode choke coil 3110 and the second common mode choke coil 3120, that is, the voltage signal that passed through the filter circuit 31, was reduced to some extent in the differential mode as well as the common mode noise. In the state, it goes to the PFC circuit 32.
　図５は、実施の形態１に係る車載充電器の回路内で発生するコモンモードノイズの経路を示す図である。図５を用いてコモンモードノイズの発生メカニズムを説明する。 FIG. 5 is a diagram showing a path of common mode noise generated in the circuit of the vehicle-mounted charger according to the first embodiment. The mechanism of generating common mode noise will be described with reference to FIG.
　実施の形態１に係る車載充電器３の回路内で発生するコモンモードノイズの発生源の一つとして、トランス３４が挙げられる。トランス３４から発生したノイズは、トランス３４及びトランス３４等を取り囲む筐体３７の間で発生する第１の寄生容量３８を介して筐体３７に伝搬する。さらに、筐体３７に伝搬したノイズは、フィルタ回路３１及び筐体３７の間で発生する第２の寄生容量３９を介して、フィルタ回路３１等に伝搬する。このようにしてフィルタ回路３１等には、Ｌ（ＬＩＶＥ）側及びＮ（ＮＥＵＴＲＡＬ）側の電源ラインに同位相のノイズが流れ、これが車載充電器３の回路内で発生するコモンモードノイズとなる。 A transformer 34 is mentioned as one of the sources of common mode noise generated in the circuit of the vehicle-mounted charger 3 according to the first embodiment. The noise generated from the transformer 34 propagates to the housing 37 via the first parasitic capacitance 38 generated between the transformer 34 and the housing 37 surrounding the transformer 34 and the like. Further, the noise propagated to the housing 37 propagates to the filter circuit 31 and the like via the second parasitic capacitance 39 generated between the filter circuit 31 and the housing 37. In this way, in the filter circuit 31 and the like, noise having the same phase flows through the power supply lines on the L (Live) side and the N (NEUTRAL) side, and this becomes common mode noise generated in the circuit of the vehicle-mounted charger 3.
　図６は、実施の形態１に係る車載充電器の回路内で発生するディファレンシャルモードノイズの経路を示す図である。図６を用いてディファレンシャルモードノイズの発生メカニズムを説明する。 FIG. 6 is a diagram showing a path of differential mode noise generated in the circuit of the vehicle-mounted charger according to the first embodiment. The mechanism of generating differential mode noise will be described with reference to FIG.
　実施の形態１に係る車載充電器３の回路内で発生するディファレンシャルモードノイズの発生源の一つとして、ＤＣ／ＡＣ変換回路３３等に含まれるトランジスタが挙げられる。例えば、ＤＣ／ＡＣ変換回路３３に含まれるトランジスタで電流をスイッチングすることでノイズが発生する。このスイッチングにより発生したノイズは、筐体３７を介さず、車載充電器３の回路における電源ラインにそのまま流れる。これにより、車載充電器３が有するフィルタ回路３１等のＬ（ＬＩＶＥ）側の電源ラインとＮ（ＮＥＵＴＲＡＬ）側の電源ラインとに、逆位相のノイズが流れディファレンシャルモードノイズとなる。 One of the sources of differential mode noise generated in the circuit of the vehicle-mounted charger 3 according to the first embodiment is a transistor included in the DC / AC conversion circuit 33 and the like. For example, noise is generated by switching the current with a transistor included in the DC / AC conversion circuit 33. The noise generated by this switching flows as it is to the power supply line in the circuit of the vehicle-mounted charger 3 without passing through the housing 37. As a result, noise of opposite phase flows between the power supply line on the L (Live) side and the power supply line on the N (NEUTRAL) side of the filter circuit 31 and the like included in the vehicle-mounted charger 3, and becomes differential mode noise.
　図７は、コモンモードチョークコイルにディファレンシャルモードの電流が流れた際に発生する磁束を示す図である。図８は、コモンモードチョークコイルにコモンモードの電流が流れた際に発生する磁束を示す図である。図９は、コモンモードチョークコイルの等価回路図である。図７、図８及び図９では、第１のコイル部品３１１が有する第１のコモンモードチョークコイル３１１０を例に、各モードのノイズ（電流）が流れた際の、磁束及び各ノイズに対する効果について説明する。 FIG. 7 is a diagram showing the magnetic flux generated when a differential mode current flows through the common mode choke coil. FIG. 8 is a diagram showing a magnetic flux generated when a common mode current flows through the common mode choke coil. FIG. 9 is an equivalent circuit diagram of a common mode choke coil. In FIGS. 7, 8 and 9, taking the first common mode choke coil 3110 of the first coil component 311 as an example, the effects on the magnetic flux and each noise when the noise (current) of each mode flows. explain.
　図７に示すように、第１のコモンモードチョークコイル３１１０にディファレンシャルモードの電流が流れると、第１のコモンモードチョークコイル３１１０のコア３１１１内に、導線３１１２における電磁誘導現象による磁束３１４３Ｌ及び導線３１１３における電磁誘導現象による磁束３１４３Ｎが発生する。このとき、磁束３１４３Ｌの方向と磁束３１４３Ｎの方向とは逆向きであるため、磁束３１４３Ｌ及び磁束３１４３Ｎは打ち消しあう。その結果、第１のコモンモードチョークコイル３１１０は、ディファレンシャルモードの電流に対しては、基本的には、インダクタとして機能しなくなる。しかし、第１のコモンモードチョークコイル３１１０にディファレンシャルモードの電流が流れた際、コア３１１１内に磁束３１４３Ｌ及び磁束３１４３Ｎが発生するだけでなく、導線３１１２からの漏れ磁束３１４４Ｌ及び導線３１１３からの漏れ磁束３１４４Ｎも発生している。これらの漏れ磁束により、第１のコモンモードチョークコイル３１１０は、ある程度は、ディファレンシャルモードの電流に対してインダクタとして機能する。 As shown in FIG. 7, when a differential mode current flows through the first common mode choke coil 3110, the magnetic flux 3143L and the conducting wire 3113 due to the electromagnetic induction phenomenon in the conducting wire 3112 are contained in the core 3111 of the first common mode choke coil 3110. A magnetic flux of 3143N is generated due to the electromagnetic induction phenomenon in. At this time, since the direction of the magnetic flux 3143L and the direction of the magnetic flux 3143N are opposite to each other, the magnetic flux 3143L and the magnetic flux 3143N cancel each other out. As a result, the first common mode choke coil 3110 basically does not function as an inductor with respect to the current in the differential mode. However, when a differential mode current flows through the first common mode choke coil 3110, not only magnetic flux 3143L and magnetic flux 3143N are generated in the core 3111, but also leakage flux 3144L from the lead wire 3112 and leakage flux from the lead wire 3113. 3144N is also generated. Due to these leakage fluxes, the first common mode choke coil 3110 functions to some extent as an inductor with respect to the current in the differential mode.
　図８に示すように、第１のコモンモードチョークコイル３１１０にコモンモードの電流が流れると、第１のコモンモードチョークコイル３１１０のコア３１１１内に、導線３１１２における電磁誘導現象による磁束３１４３Ｌ及び導線３１１３における電磁誘導現象による磁束３１４３Ｎが発生する。このとき、磁束３１４３Ｌの方向と磁束３１４３Ｎの方向とは同じ向きであるため、お互いの磁束が強め合う。その結果、第１のコモンモードチョークコイル３１１０は、コモンモードの電流に対しては、原則として、インダクタとしての機能を発揮する。しかし、第１のコモンモードチョークコイル３１１０にコモンモードの電流が流れた際、コア３１１１内に磁束３１４３Ｌ及び磁束３１４３Ｎが発生するだけではなく、導線３１１２からの漏れ磁束３１４４Ｌ及び導線３１１３からの漏れ磁束３１４４Ｎも発生している。これらの漏れ磁束により、第１のコモンモードチョークコイル３１１０は、コモンモードの電流が流れた場合でも、ディファレンシャルモードの電流に対してある程度はインダクタとして機能する。 As shown in FIG. 8, when a common mode current flows through the first common mode choke coil 3110, the magnetic flux 3143L and the conducting wire 3113 due to the electromagnetic induction phenomenon in the conducting wire 3112 are contained in the core 3111 of the first common mode choke coil 3110. A magnetic flux of 3143N is generated due to the electromagnetic induction phenomenon in. At this time, since the direction of the magnetic flux 3143L and the direction of the magnetic flux 3143N are the same, the magnetic fluxes of each other are strengthened. As a result, the first common mode choke coil 3110 exerts a function as an inductor in principle with respect to the current in the common mode. However, when a common mode current flows through the first common mode choke coil 3110, not only magnetic flux 3143L and magnetic flux 3143N are generated in the core 3111, but also leakage flux 3144L from the lead wire 3112 and leakage flux from the lead wire 3113. 3144N is also generated. Due to these leakage fluxes, the first common mode choke coil 3110 functions as an inductor to some extent with respect to the differential mode current even when the common mode current flows.
　以上のように、第１のコモンモードチョークコイル３１１０は、ディファレンシャルモードの電流が流れた場合、及びコモンモードの電流が流れた場合、いずれの場合も、ディファレンシャルモードの電流に対してインダクタとして機能する。このことを考慮すると、第１のコモンモードチョークコイル３１１０の等価回路図は、図９に示すように、コモンモードの電流に対してのみフィルタとして機能する理想的なコモンモードチョークコイル３１４６にインダクタ３１４７が直列に接続された回路図となる。 As described above, the first common mode choke coil 3110 functions as an inductor with respect to the differential mode current in both cases when the differential mode current flows and when the common mode current flows. .. Considering this, the equivalent circuit diagram of the first common mode choke coil 3110 is an inductor 3147 on an ideal common mode choke coil 3146 that functions as a filter only for common mode currents, as shown in FIG. Is a circuit diagram connected in series.
　図１０は、２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続された状態で、ディファレンシャルモードの電流が流れた際に発生する磁束を示す図である。図１１は、２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続された状態で、コモンモードの電流が流れた際に発生する磁束を示す図である。図１２は、２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続された場合の等価回路図である。図１３は、２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において同じとなるように接続された状態で、ディファレンシャルモードの電流が流れた際に発生する磁束を示す図である。図１４は、２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において同じとなるように、２つのコモンモードチョークコイルが接続された状態で、コモンモードの電流が流れた際に発生する磁束を示す図である。図１５は、２つのコモンモードチョークコイルが有する導線の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において同じとなるように２つのコモンモードチョークコイルが接続された場合の等価回路図である。 FIG. 10 shows the differential mode in which the two common mode choke coils are connected so that the winding directions of the conductors of the two common mode choke coils are opposite in the direction in which the two common mode choke coils are lined up. It is a figure which shows the magnetic flux generated when a current flows. FIG. 11 shows a common mode with two common mode choke coils connected so that the winding directions of the conductors of the two common mode choke coils are opposite in the direction in which the two common mode choke coils are lined up. It is a figure which shows the magnetic flux generated when a current flows. FIG. 12 is an equivalent circuit diagram when two common mode choke coils are connected so that the winding directions of the conductors of the two common mode choke coils are opposite in the direction in which the two common mode choke coils are lined up. be. FIG. 13 is generated when a differential mode current flows in a state where the winding directions of the conductors of the two common mode choke coils are connected so as to be the same in the direction in which the two common mode choke coils are lined up. It is a figure which shows the magnetic flux. FIG. 14 shows a common mode with two common mode choke coils connected so that the winding directions of the conductors of the two common mode choke coils are the same in the direction in which the two common mode choke coils are lined up. It is a figure which shows the magnetic flux generated when a current flows. FIG. 15 is an equivalent circuit diagram when two common mode choke coils are connected so that the winding directions of the conductors of the two common mode choke coils are the same in the direction in which the two common mode choke coils are lined up. ..
　図１０に示すように、第１のコモンモードチョークコイル３１１０が有する導線３１１２及び導線３１１３がコア３１１１に巻かれる方向である第１の巻き方向、並びに第２のコモンモードチョークコイル３１２０が有する導線３１２２及び導線３１２３がコア３１２１に巻かれる方向である第２の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続された状態で、ディファレンシャルモードの電流が流れた場合、２つのコモンモードチョークコイルから発生する漏れ磁束３１４４Ｌ、漏れ磁束３１４４Ｎ、漏れ磁束３２４４Ｌ及び漏れ磁束３２４４Ｎは、ほとんど結合しない。その結果、接続された２つのコモンモードチョークコイルは、単独のコモンモードチョークコイルに各モードの電流が流れた場合と同様に、コモンモードチョークコイルとして機能するだけなく、ある程度は、ディファレンシャルモードの電流に対してインダクタとして機能する。また、図１１に示すように、第１のコモンモードチョークコイル３１１０が有する導線３１１２及び導線３１１３がコア３１１１に巻かれる方向である第１の巻き方向、並びに第２のコモンモードチョークコイル３１２０が有する導線３１２２及び導線３１２３がコア３１２１に巻かれる方向である第２の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続された状態で、コモンモードの電流が流れた場合も、２つのコモンモードチョークコイルから発生する漏れ磁束３１４４Ｌ、漏れ磁束３１４４Ｎ、漏れ磁束３２４４Ｌ及び漏れ磁束３２４４Ｎは、ほとんど結合しない。従って、第１のコモンモードチョークコイル３１１０が有する導線３１１２及び導線３１１３がコア３１１１に巻かれる方向である第１の巻き方向、並びに第２のコモンモードチョークコイル３１２０が有する導線３１２２及び導線３１２３がコア３１２１に巻かれる方向である第２の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続された場合の等価回路図は、図１２に示すように、コモンモードの電流に対してのみフィルタとして機能する理想的なコモンモードチョークコイル３１４６及びコモンモードチョークコイル３２４６の間に、インダクタ３１４７及びインダクタ３１４８が直列に接続された回路となる。 As shown in FIG. 10, the first winding direction in which the lead wire 3112 and the lead wire 3113 of the first common mode choke coil 3110 are wound around the core 3111, and the lead wire 3122 of the second common mode choke coil 3120. In the differential mode, the two common mode choke coils are connected so that the second winding direction, which is the direction in which the lead wire 3123 is wound around the core 3121, is opposite in the direction in which the two common mode choke coils are lined up. When the current of (1) flows, the leakage magnetic flux 3144L, the leakage magnetic flux 3144N, the leakage magnetic flux 3244L and the leakage magnetic flux 3244N generated from the two common mode choke coils are hardly coupled. As a result, the two connected common-mode choke coils not only function as common-mode choke coils, as if the current of each mode flows through a single common-mode choke coil, but to some extent, the differential mode current. Acts as an inductor. Further, as shown in FIG. 11, the lead wire 3112 and the lead wire 3113 included in the first common mode choke coil 3110 have a first winding direction in which the lead wire 3113 is wound around the core 3111, and the second common mode choke coil 3120 has. With the two common mode choke coils connected so that the second winding direction, which is the direction in which the lead wire 3122 and the lead wire 3123 are wound around the core 3121, is opposite in the direction in which the two common mode choke coils are lined up. Even when a common mode current flows, the leakage flux 3144L, the leakage flux 3144N, the leakage flux 3244L, and the leakage flux 3244N generated from the two common mode choke coils are hardly coupled. Therefore, the first winding direction in which the lead wire 3112 and the lead wire 3113 of the first common mode choke coil 3110 are wound around the core 3111, and the lead wire 3122 and the lead wire 3123 of the second common mode choke coil 3120 are the cores. FIG. 12 shows an equivalent circuit diagram when two common mode choke coils are connected so that the second winding direction, which is the winding direction of 3121, is opposite in the direction in which the two common mode choke coils are lined up. As shown, an inductor 3147 and an inductor 3148 are connected in series between an ideal common mode choke coil 3146 and a common mode choke coil 3246 that function as a filter only for a common mode current.
　ここで、仮に、図１３に示すように、第１のコモンモードチョークコイル３１１０が有する導線３１１２及び導線３１１３がコア３１１１に巻かれる方向である第１の巻き方向、並びに第２のコモンモードチョークコイル３１２０が有する導線３１２２及び導線３１２３がコア３１２１に巻かれる方向である第２の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において同じとなるように、２つのコモンモードチョークコイルが接続されていたとする。この状態で、ディファレンシャルモードの電流が流れると、２つのコモンモードチョークコイルから発生する、漏れ磁束３１４４Ｌ及び漏れ磁束３２４４Ｌが結合し、さらに、漏れ磁束３１４４Ｎ及び漏れ磁束３２４４Ｎが結合する。この場合、接続された２つのコモンモードチョークコイルは、単独のコモンモードチョークコイルに各モードの電流が流れた場合と異なり、コモンモードチョークコイルとして機能するものの、ディファレンシャルモードの電流に対しては、インダクタとしてほとんど機能しなくなる。また、図１４に示すように、第１のコモンモードチョークコイル３１１０が有する導線３１１２及び導線３１１３がコア３１１１に巻かれる方向である第１の巻き方向、並びに第２のコモンモードチョークコイル３１２０が有する導線３１２２及び導線３１２３がコア３１２１に巻かれる方向である第２の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において同じとなるように、２つのコモンモードチョークコイルが接続された状態で、コモンモードの電流が流れた場合も、２つのコモンモードチョークコイルから発生する、漏れ磁束３１４４Ｌ及び漏れ磁束３２４４Ｌが結合し、漏れ磁束３１４４Ｎ及び漏れ磁束３２４４Ｎが結合する。従って、第１のコモンモードチョークコイル３１１０が有する導線３１１２及び導線３１１３がコア３１１１に巻かれる方向である第１の巻き方向、並びに第２のコモンモードチョークコイル３１２０が有する導線３１２２及び導線３１２３がコア３１２１に巻かれる方向である第２の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において同じとなるように、２つのコモンモードチョークコイルが接続された場合の等価回路図は、図１５に示すように、コモンモードの電流に対してのみフィルタとして機能する理想的なコモンモードチョークコイル３１４６及びコモンモードチョークコイル３２４６の間に、微小なインピーダンスを発生するインダクタ３１４７及びインダクタ３１４８が直列に接続された回路となる。なお、実施の形態１に係る車載充電器３のフィルタ回路３１は、第１のコモンモードチョークコイル３１１０が有する導線３１１２及び導線３１１３がコア３１１１に巻かれる方向である第１の巻き方向、並びに第２のコモンモードチョークコイル３１２０が有する導線３１２２及び導線３１２３がコア３１２１に巻かれる方向である第２の巻き方向が、２つのコモンモードチョークコイルが並ぶ方向において反対となるように、２つのコモンモードチョークコイルが接続されている。従って、実施の形態１に係る車載充電器３のフィルタ回路３１の等価回路図は、図１５ではなく、図１２である。 Here, tentatively, as shown in FIG. 13, the first winding direction in which the conducting wire 3112 and the conducting wire 3113 included in the first common mode choke coil 3110 are wound around the core 3111, and the second common mode choke coil The two common mode choke coils are connected so that the second winding direction, which is the direction in which the conductor 3122 and the conductor 3123 of the 3120 are wound around the core 3121, is the same in the direction in which the two common mode choke coils are lined up. Suppose. When a current in the differential mode flows in this state, the leakage magnetic flux 3144L and the leakage magnetic flux 3244L generated from the two common mode choke coils are coupled, and further, the leakage magnetic flux 3144N and the leakage magnetic flux 3244N are coupled. In this case, the two connected common mode choke coils function as common mode choke coils, unlike the case where the current of each mode flows through a single common mode choke coil. Almost no function as an inductor. Further, as shown in FIG. 14, the lead wire 3112 and the lead wire 3113 included in the first common mode choke coil 3110 have a first winding direction in which the lead wire 3113 is wound around the core 3111, and the second common mode choke coil 3120 has. With the two common mode choke coils connected so that the second winding direction, which is the direction in which the lead wire 3122 and the lead wire 3123 are wound around the core 3121, is the same in the direction in which the two common mode choke coils are lined up. Even when a common mode current flows, the leakage magnetic flux 3144L and the leakage magnetic flux 3244L generated from the two common mode choke coils are coupled, and the leakage magnetic flux 3144N and the leakage magnetic flux 3244N are coupled. Therefore, the first winding direction in which the lead wire 3112 and the lead wire 3113 of the first common mode choke coil 3110 are wound around the core 3111, and the lead wire 3122 and the lead wire 3123 of the second common mode choke coil 3120 are the cores. FIG. 15 shows an equivalent circuit diagram when two common mode choke coils are connected so that the second winding direction, which is the winding direction of 3121, is the same in the direction in which the two common mode choke coils are lined up. As shown, an inductor 3147 and an inductor 3148 that generate a minute impedance are connected in series between an ideal common mode choke coil 3146 and a common mode choke coil 3246 that function as a filter only for a common mode current. It becomes a circuit. The filter circuit 31 of the vehicle-mounted charger 3 according to the first embodiment has a first winding direction in which the lead wire 3112 and the lead wire 3113 of the first common mode choke coil 3110 are wound around the core 3111, and a first winding direction. Two common modes so that the second winding direction, which is the direction in which the lead wire 3122 and the lead wire 3123 of the two common mode choke coils 3120 are wound around the core 3121, are opposite in the direction in which the two common mode choke coils are lined up. The choke coil is connected. Therefore, the equivalent circuit diagram of the filter circuit 31 of the vehicle-mounted charger 3 according to the first embodiment is shown in FIG. 12 instead of FIG.
　図１６は、比較例に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。 FIG. 16 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged.
　以上のように構成された実施の形態１に係る車載充電器３では、ディファレンシャルモードノイズを低減するための部品の点数を削減できる。具体的には、車載充電器３におけるフィルタ回路３１が有する第１のコイル部品３１１と第２のコイル部品３１２とは、隣り合うように基板５１上に配置されている。また、フィルタ回路３１では、第１のコモンモードチョークコイル３１１０が有する導線がコアに巻かれる方向である第１の巻き方向、及び第２のコモンモードチョークコイル３１２０が有する導線がコアに巻かれる方向である第２の巻き方向が、第１のコイル部品３１１及び第２のコイル部品３１２が並ぶ方向において反対となるように、第１のコイル部品３１１及び第２のコイル部品３１２が基板５１上に並べられている。これにより、フィルタ回路３１は、前述のとおり、コモンモードチョークコイルとして機能するだけなく、ディファレンシャルモードの電流に対してインダクタとして機能する。従って、車載充電器３では、ディファレンシャルモードノイズを低減するために、新たな部品を追加する必要がない。つまり、車載充電器３では、ディファレンシャルモードノイズを低減するための部品の点数を削減できる。 In the vehicle-mounted charger 3 according to the first embodiment configured as described above, the number of parts for reducing the differential mode noise can be reduced. Specifically, the first coil component 311 and the second coil component 312 included in the filter circuit 31 of the vehicle-mounted charger 3 are arranged on the substrate 51 so as to be adjacent to each other. Further, in the filter circuit 31, the first winding direction in which the lead wire of the first common mode choke coil 3110 is wound around the core and the direction in which the lead wire of the second common mode choke coil 3120 is wound around the core. The first coil component 311 and the second coil component 312 are placed on the substrate 51 so that the second winding direction is opposite in the direction in which the first coil component 311 and the second coil component 312 are arranged. They are lined up. As a result, as described above, the filter circuit 31 not only functions as a common mode choke coil, but also functions as an inductor with respect to the current in the differential mode. Therefore, in the vehicle-mounted charger 3, it is not necessary to add new parts in order to reduce the differential mode noise. That is, in the in-vehicle charger 3, the number of parts for reducing the differential mode noise can be reduced.
　ここで、フィルタ回路を組み立てる際に、コモンモードチョークコイルの導線の巻き方向の判別は困難である。しかしながら、車載充電器３におけるフィルタ回路３１では、第１のコイル部品３１１には、第１のコモンモードチョークコイル３１１０が有する導線がコアに巻かれる方向である第１の巻き方向を示す第１の識別マーク３１５０が設けられ、第２のコイル部品３１２には、第２のコモンモードチョークコイル３１２０が有する導線がコアに巻かれる方向である第２の巻き方向を示す第２の識別マーク３２５０が設けられている。これにより、各コモンモードチョークコイルの導線の巻き方向の判別が可能となり、第１の巻き方向、及び第２の巻き方向が、第１のコイル部品３１１及び第２のコイル部品３１２が並ぶ方向において反対となるように、第１のコイル部品３１１及び第２のコイル部品３１２を基板５１上に並べることができる。その結果、車載充電器３では、ディファレンシャルモードノイズを低減するための部品の点数を削減するという効果を達成できる。 Here, when assembling the filter circuit, it is difficult to determine the winding direction of the lead wire of the common mode choke coil. However, in the filter circuit 31 of the vehicle-mounted charger 3, the first coil component 311 has a first winding direction indicating a first winding direction in which the lead wire of the first common mode choke coil 3110 is wound around the core. An identification mark 3150 is provided, and the second coil component 312 is provided with a second identification mark 3250 indicating a second winding direction in which the lead wire of the second common mode choke coil 3120 is wound around the core. Has been done. This makes it possible to determine the winding direction of the conductor of each common mode choke coil, and the first winding direction and the second winding direction are in the direction in which the first coil component 311 and the second coil component 312 are lined up. The first coil component 311 and the second coil component 312 can be arranged on the substrate 51 so as to be opposite. As a result, the in-vehicle charger 3 can achieve the effect of reducing the number of parts for reducing the differential mode noise.
　ところで、第１のコモンモードチョークコイル３１１０が有する導線がコアに巻かれる方向である第１の巻き方向を示す第１の識別マーク３１５０は、第１の固定部材３１１５における第２のコイル部品３１２に対して反対方向に突出する第１の凸部である。また、第１の凸部の高さＨ１は、第１のコイル部品３１１及び第２のコイル部品３１２が基板５１に並べられた際の、第１のコイル部品３１１と第２のコイル部品３１２との隙間の幅Ｇよりも狭い。従って、第１のコモンモードチョークコイル３１１０の第１の巻き方向と第２のコモンモードチョークコイル３１２０の第２の巻き方向とが同じとなるように第１のコイル部品３１１を基板５１に置こうとすると、図１６に示すように、第１のコイル部品３１１の第１の識別マーク３１５０が、第２のコイル部品３１２と接触する。従って、車載充電器３では、第１の識別マーク３１５０が、例えば、第１の固定部材３１１５に塗布された印である場合と比較して、部品を誤って組み立てることを抑制する効果が高い。 By the way, the first identification mark 3150 indicating the first winding direction, which is the direction in which the lead wire of the first common mode choke coil 3110 is wound around the core, is attached to the second coil component 312 in the first fixing member 3115. It is a first convex portion that protrudes in the opposite direction. Further, the height H1 of the first convex portion is the height H1 of the first coil component 311 and the second coil component 312 when the first coil component 311 and the second coil component 312 are arranged on the substrate 51. It is narrower than the width G of the gap. Therefore, let's place the first coil component 311 on the substrate 51 so that the first winding direction of the first common mode choke coil 3110 and the second winding direction of the second common mode choke coil 3120 are the same. Then, as shown in FIG. 16, the first identification mark 3150 of the first coil component 311 comes into contact with the second coil component 312. Therefore, in the vehicle-mounted charger 3, the effect of suppressing the erroneous assembly of parts is high as compared with the case where the first identification mark 3150 is a mark applied to, for example, the first fixing member 3115.
　また、第２のコイル部品３１２についても、第２のコモンモードチョークコイル３１２０が有する導線がコアに巻かれる方向である第２の巻き方向を示す第２の識別マーク３２５０は、第２の固定部材３１２５における第１のコイル部品３１１に対して反対方向に突出する第２の凸部である。そして、第２の識別マーク３２５０である第２の凸部の高さＨ２は、第１のコイル部品３１１と第２のコイル部品３１２との隙間の幅Ｇよりも狭い。従って、第１のコモンモードチョークコイル３１１０の第１の巻き方向と第２のコモンモードチョークコイル３１２０の第２の巻き方向とが同じとなるように第２のコイル部品３１２を基板５１に置こうとすると、第２のコイル部品３１２の第２の識別マーク３２５０が、第１のコイル部品３１１と接触する。以上より、フィルタ回路３１を組み立てる際に、第１のコモンモードチョークコイル３１１０の第１の巻き方向と第２のコモンモードチョークコイル３１２０の第２の巻き方向とが同じとなるように、第２のコイル部品３１２を基板５１に置くことはできない。従って、車載充電器３では、第２の識別マーク３２５０が、第２の固定部材３１２５に塗布された印である場合と比較して、部品を誤って組み立てることを抑制する効果が高い。 Also, regarding the second coil component 312, the second identification mark 3250 indicating the second winding direction, which is the direction in which the conducting wire of the second common mode choke coil 3120 is wound around the core, is a second fixing member. It is a second convex portion that protrudes in the direction opposite to the first coil component 311 in the 3125. The height H2 of the second convex portion, which is the second identification mark 3250, is narrower than the width G of the gap between the first coil component 311 and the second coil component 312. Therefore, let's place the second coil component 312 on the substrate 51 so that the first winding direction of the first common mode choke coil 3110 and the second winding direction of the second common mode choke coil 3120 are the same. Then, the second identification mark 3250 of the second coil component 312 comes into contact with the first coil component 311. From the above, when assembling the filter circuit 31, the second winding direction of the first common mode choke coil 3110 and the second winding direction of the second common mode choke coil 3120 are the same. The coil component 312 of the above cannot be placed on the substrate 51. Therefore, in the vehicle-mounted charger 3, the effect of suppressing the erroneous assembly of parts is higher than in the case where the second identification mark 3250 is a mark applied to the second fixing member 3125.
　さらに、第１のコイル部品３１１と第２のコイル部品３１２とは、同じ形状である。従って、車載充電器３では、第１のコイル部品３１１と第２のコイル部品３１２とが異なる形状である場合と比較して、部品の種類を削減することができる。 Further, the first coil component 311 and the second coil component 312 have the same shape. Therefore, in the vehicle-mounted charger 3, the types of parts can be reduced as compared with the case where the first coil component 311 and the second coil component 312 have different shapes.
　実施の形態２．
　図１７は、実施の形態２に係る車載充電器のフィルタ回路が有するコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。図１８は、実施の形態２に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。図１９は、比較例に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。図２０は、実施の形態２に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。図２１は、比較例に係る車載充電器のフィルタ回路が有する２つのコイル部品を、コイル部品が配置される基板と直交する方向から見た平面図である。図２２は、実施の形態２に係る車載充電器のフィルタ回路が有するコイル部品を、３つ並べた状態を示す平面図である。 Embodiment 2.
FIG. 17 is a plan view of the coil component included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil component is arranged. FIG. 18 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged. FIG. 19 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged. FIG. 20 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the second embodiment as viewed from a direction orthogonal to the substrate on which the coil components are arranged. FIG. 21 is a plan view of two coil components included in the filter circuit of the vehicle-mounted charger according to the comparative example as viewed from a direction orthogonal to the substrate on which the coil components are arranged. FIG. 22 is a plan view showing a state in which three coil parts included in the filter circuit of the vehicle-mounted charger according to the second embodiment are arranged side by side.
　実施の形態２に係る車載充電器と実施の形態１に係る車載充電器との相違点は、第２の実施形態に係る第１のコイル部品に設けられた第１の識別マーク及び第２のコイル部品に設けられた第２の識別マークである。従って、実施の形態２に係る第１の識別マークの符号を３１５０Ａとし、第２のコイル部品の符号を３２５０Ａとする。 The difference between the vehicle-mounted charger according to the second embodiment and the vehicle-mounted charger according to the first embodiment is the first identification mark and the second identification mark provided on the first coil component according to the second embodiment. This is the second identification mark provided on the coil component. Therefore, the code of the first identification mark according to the second embodiment is set to 3150A, and the code of the second coil component is set to 3250A.
　図１７に示すように、実施の形態２に係る第１の識別マーク３１５０Ａは、第１のコモンモードチョークコイル３１１０の導線３１１２及び導線３１１３が、コア３１１１の下面を横切ってコア３１１１から離れる部分である巻き終わり部分と最も近接する、第１の固定部材３１１５の壁面に設けられている。さらに、第１の識別マーク３１５０Ａは、第１のコイル部品３１１と第２のコイル部品３１２とが並ぶ方向に突出する凸部である第１の凸部、及び第１のコイル部品３１１と第２のコイル部品３１２とが並ぶ方向に凹む第１の凹部から構成されている。 As shown in FIG. 17, the first identification mark 3150A according to the second embodiment is a portion where the conductors 3112 and 3113 of the first common mode choke coil 3110 cross the lower surface of the core 3111 and separate from the core 3111. It is provided on the wall surface of the first fixing member 3115, which is closest to a certain winding end portion. Further, the first identification mark 3150A is a first convex portion which is a convex portion protruding in the direction in which the first coil component 311 and the second coil component 312 are aligned, and the first coil component 311 and the second. It is composed of a first recess that is recessed in the direction in which the coil component 312 of the above is aligned.
　また、図１８に示すように、第２の識別マーク３２５０Ａは、第２のコモンモードチョークコイル３１２０の導線３１２２及び導線３１２３が、コア３１２１の下面を横切ってからコア３１２１に巻かれ始める部分である巻き始め部分と最も近接する、第２の固定部材３１２５の壁面に設けられている。さらに、第２の識別マーク３２５０Ａは、第１のコイル部品３１１と第２のコイル部品３１２とが並ぶ方向に突出する凸部である第２の凸部、及び第１のコイル部品３１１と第２のコイル部品３１２とが並ぶ方向に凹む第２の凹部から構成されている。そして、第２の実施形態に係る車載充電器では、第１のコイル部品３１１と第２のコイル部品３１２とが並ぶ方向において、第１の巻き方向と第２の巻き方向とが反対となるように第１のコイル部品３１１及び第２のコイル部品３１２が基板５１に並べられた際に、第１の凸部が第２の凹部内に位置し、第２の凸部が第１の凹部内に位置する。また、第１のコイル部品３１１と第２のコイル部品３１２とは、同じ形状である。 Further, as shown in FIG. 18, the second identification mark 3250A is a portion where the conductors 3122 and 3123 of the second common mode choke coil 3120 start to be wound around the core 3121 after crossing the lower surface of the core 3121. It is provided on the wall surface of the second fixing member 3125, which is closest to the winding start portion. Further, the second identification mark 3250A is a second convex portion which is a convex portion protruding in the direction in which the first coil component 311 and the second coil component 312 are aligned, and the first coil component 311 and the second. It is composed of a second recess that is recessed in the direction in which the coil component 312 of the above is aligned. Then, in the vehicle-mounted charger according to the second embodiment, the first winding direction and the second winding direction are opposite in the direction in which the first coil component 311 and the second coil component 312 are lined up. When the first coil component 311 and the second coil component 312 are arranged on the substrate 51, the first convex portion is located in the second concave portion and the second convex portion is in the first concave portion. Located in. Further, the first coil component 311 and the second coil component 312 have the same shape.
　以上のような実施の形態２に係る車載充電器では、実施の形態１に係る車載充電器と比較して、フィルタ回路の組み立てが容易になる。具体的には、実施の形態１に係る車載充電器では、第１の巻き方向及び第２の巻き方向が、第１のコイル部品３１１及び第２のコイル部品３１２が並ぶ方向において反対となるように、第１のコイル部品３１１及び第２のコイル部品３１２が基板５１上に並べた場合であっても、図１９に示すように、第１のコイル部品３１１の第１の識別マーク３１５０を第２のコイル部品３１２側に向け、第２のコイル部品３１２の第２の識別マーク３２５０を第１のコイル部品３１１側に向けると、第１の識別マーク３１５０と第２の識別マーク３２５０とが接触する。従って、実施の形態１に係る車載充電器では、第１の巻き方向及び第２の巻き方向が、第１のコイル部品３１１及び第２のコイル部品３１２が並ぶ方向において反対となるように、第１のコイル部品３１１及び第２のコイル部品３１２が基板５１上に並べようとした際に、第１の識別マーク３１５０と第２の識別マーク３２５０とが接触して、第１のコイル部品３１１及び第２のコイル部品３１２を基板５１に取り付けられない場合がある。しかし、実施の形態２に係る車載充電器では、図１８に示される、第１のコイル部品３１１の第１の識別マーク３１５０Ａを第２のコイル部品３１２側に向け、第２のコイル部品３１２の第２の識別マーク３２５０Ａを第１のコイル部品３１１側に向けた場合、図２０に示される、第１のコイル部品３１１の第１の識別マーク３１５０Ａを第２のコイル部品３１２に対して反対側に向け、第２のコイル部品３１２の第２の識別マーク３２５０Ａを第１のコイル部品３１１に対して反対側に向けた場合のいずれの場合でも、第１のコイル部品３１１及び第２のコイル部品３１２を基板５１に取り付けることができる。従って、実施の形態２に係る車載充電器では、実施の形態１に係る車載充電器と比較して、フィルタ回路の組み立てが容易になる。なお、図２１に示すように、実施の形態２に係る車載充電器では、第１の巻き方向と第２の巻き方向とが同じとなるように第１のコイル部品３１１及び第２のコイル部品３１２を基板５１に置こうとすると、第１の識別マーク３１５０が第２のコイル部品３１２に接触する、又は、第２の識別マーク３２５０が第１のコイル部品３１１に接触する。従って、実施の形態２に係る車載充電器も、実施の形態１に係る車載充電器と同様に、フィルタ回路３１を組み立てる際に、第１のコモンモードチョークコイル３１１０の第１の巻き方向と第２のコモンモードチョークコイル３１２０の第２の巻き方向とが同じとなるように、第１のコイル部品３１１及び第２のコイル部品３１２を基板５１に置くことはできない。 In the vehicle-mounted charger according to the second embodiment as described above, the filter circuit can be easily assembled as compared with the vehicle-mounted charger according to the first embodiment. Specifically, in the vehicle-mounted charger according to the first embodiment, the first winding direction and the second winding direction are opposite in the direction in which the first coil component 311 and the second coil component 312 are lined up. In addition, even when the first coil component 311 and the second coil component 312 are arranged on the substrate 51, as shown in FIG. 19, the first identification mark 3150 of the first coil component 311 is placed on the first identification mark 3150. When the second identification mark 3250 of the second coil component 312 is directed toward the first coil component 311 side toward the second coil component 312 side, the first identification mark 3150 and the second identification mark 3250 come into contact with each other. do. Therefore, in the vehicle-mounted charger according to the first embodiment, the first winding direction and the second winding direction are opposite to each other in the direction in which the first coil component 311 and the second coil component 312 are arranged. When the first coil component 311 and the second coil component 312 are to be arranged on the substrate 51, the first identification mark 3150 and the second identification mark 3250 come into contact with each other, and the first coil component 311 and the first coil component 311 and the second coil component 312 come into contact with each other. The second coil component 312 may not be attached to the substrate 51. However, in the vehicle-mounted charger according to the second embodiment, the first identification mark 3150A of the first coil component 311 shown in FIG. 18 is directed to the second coil component 312 side, and the second coil component 312 When the second identification mark 3250A is directed to the first coil component 311 side, the first identification mark 3150A of the first coil component 311 shown in FIG. 20 is on the opposite side to the second coil component 312. In any case where the second identification mark 3250A of the second coil component 312 is directed to the opposite side of the first coil component 311 toward the first coil component 311 and the second coil component. The 312 can be attached to the substrate 51. Therefore, in the vehicle-mounted charger according to the second embodiment, the filter circuit can be easily assembled as compared with the vehicle-mounted charger according to the first embodiment. As shown in FIG. 21, in the vehicle-mounted charger according to the second embodiment, the first coil component 311 and the second coil component are provided so that the first winding direction and the second winding direction are the same. When the 312 is to be placed on the substrate 51, the first identification mark 3150 comes into contact with the second coil component 312, or the second identification mark 3250 comes into contact with the first coil component 311. Therefore, the vehicle-mounted charger according to the second embodiment also has the first winding direction and the first winding direction of the first common mode choke coil 3110 when the filter circuit 31 is assembled, similarly to the vehicle-mounted charger according to the first embodiment. The first coil component 311 and the second coil component 312 cannot be placed on the substrate 51 so that the second winding direction of the common mode choke coil 3120 of 2 is the same.
　また、実施の形態２に係る車載充電器では、実施の形態１に係る車載充電器と比較して、コイル部品の配置の自由度を向上させることができる。前述のとおり、実施の形態２に係る車載充電器では、図１８に示すように、第１のコイル部品３１１の第１の識別マーク３１５０Ａを第２のコイル部品３１２側に向け、第２のコイル部品３１２の第２の識別マーク３２５０Ａを第１のコイル部品３１１側に向けた場合、図２０に示すように、第１のコイル部品３１１の第１の識別マーク３１５０Ａを第２のコイル部品３１２に対して反対側に向け、第２のコイル部品３１２の第２の識別マーク３２５０Ａを第１のコイル部品３１１に対して反対側に向けた場合のいずれの場合でも、第１のコイル部品３１１及び第２のコイル部品３１２を基板５１に取り付けることができる。これを応用して、実施の形態２に係る車載充電器では、図２２に示すように、例えば、第１のコイル部品３１１と同じ形状の第３のコイル部品３１３を加えて、３つ以上のコイル部品を隣り合うように基板５１上に配置できる。従って、実施の形態２に係る車載充電器では、実施の形態１に係る車載充電器と比較して、コイル部品の配置の自由度を向上させることができる。 Further, in the in-vehicle charger according to the second embodiment, the degree of freedom in arranging the coil parts can be improved as compared with the in-vehicle charger according to the first embodiment. As described above, in the vehicle-mounted charger according to the second embodiment, as shown in FIG. 18, the first identification mark 3150A of the first coil component 311 is directed toward the second coil component 312, and the second coil When the second identification mark 3250A of the component 312 is directed toward the first coil component 311, the first identification mark 3150A of the first coil component 311 is attached to the second coil component 312 as shown in FIG. On the other hand, in any case where the second identification mark 3250A of the second coil component 312 is directed to the opposite side with respect to the first coil component 311, the first coil component 311 and the first coil component 311 and the first coil component 311 are directed to the opposite side. The coil component 312 of 2 can be attached to the substrate 51. Applying this, in the vehicle-mounted charger according to the second embodiment, for example, as shown in FIG. 22, a third coil component 313 having the same shape as the first coil component 311 is added, and three or more are added. The coil components can be arranged on the substrate 51 so as to be adjacent to each other. Therefore, the in-vehicle charger according to the second embodiment can improve the degree of freedom in arranging the coil parts as compared with the in-vehicle charger according to the first embodiment.
　実施の形態２である車載充電器における他の構成は、実施の形態１である車載充電器と同様である。従って、実施の形態２である車載充電器における他の構成、効果は、実施の形態１である車載充電器での説明のとおりである。 Other configurations of the vehicle-mounted charger according to the second embodiment are the same as those of the vehicle-mounted charger according to the first embodiment. Therefore, other configurations and effects in the vehicle-mounted charger according to the second embodiment are as described in the vehicle-mounted charger according to the first embodiment.
　他の実施の形態．
　本開示に係る車載充電器は、前述の実施の形態に限らずその要旨の範囲内において変更可能である。例えば、ディファレンシャルモードノイズを低減するための部品の点数を削減するという観点から、第１のコイル部品３１１の第１の識別マーク３１５０は、第１の固定部材３１１５に設けられた凸部である必要はなく、例えば、第１の固定部材３１１５に塗布された印であってもよい。第２のコイル部品３１２の第２の識別マーク３２５０についても、第２の固定部材３１２５に設けられた凸部である必要はなく、例えば、第２の固定部材３１２５に塗布された印であってもよい。さらに、第１のコイル部品３１１の形状と第２のコイル部品３１２の形状とが同じである必要もない。従って、ディファレンシャルモードノイズを低減するための部品の点数を削減するという観点から、第１のコイル部品３１１の第１の識別マーク３１５０が第１の固定部材３１１５に塗布された印であって、第２のコイル部品３１２の第２の識別マーク３２５０が第２の固定部材３１２５に設けられた凸部である場合や、第１のコイル部品３１１の第１の識別マーク３１５０は第１の固定部材３１１５に設けられた凸部であって、第２のコイル部品３１２の第２の識別マーク３２５０が第２の固定部材３１２５に塗布された印である場合も可能である。また、第１のコイル部品３１１の第１の識別マーク３１５０及び第２のコイル部品３１２の第２の識別マーク３２５０の両方が、各固定部材に塗布された印であってもよい。 Other embodiments.
The in-vehicle charger according to the present disclosure is not limited to the above-described embodiment and can be changed within the scope of the gist thereof. For example, from the viewpoint of reducing the number of parts for reducing differential mode noise, the first identification mark 3150 of the first coil part 311 needs to be a convex portion provided on the first fixing member 3115. However, for example, it may be a mark applied to the first fixing member 3115. The second identification mark 3250 of the second coil component 312 does not have to be a convex portion provided on the second fixing member 3125, and is, for example, a mark applied to the second fixing member 3125. May be good. Furthermore, the shape of the first coil component 311 and the shape of the second coil component 312 do not have to be the same. Therefore, from the viewpoint of reducing the number of parts for reducing the differential mode noise, the first identification mark 3150 of the first coil part 311 is a mark applied to the first fixing member 3115. When the second identification mark 3250 of the second coil component 312 is a convex portion provided on the second fixing member 3125, or when the first identification mark 3150 of the first coil component 311 is the first fixing member 3115. It is also possible that the second identification mark 3250 of the second coil component 312 is a mark applied to the second fixing member 3125. Further, both the first identification mark 3150 of the first coil component 311 and the second identification mark 3250 of the second coil component 312 may be marks applied to each fixing member.
　また、第１のコイル部品３１１の第１の識別マーク３１５０は、第１の固定部材３１１５の一つの壁面だけに設けられている必要はなく、第１のコイル部品３１１が有する第１の固定部材３１１５における、第１のコイル部品３１１及び第２のコイル部品３１２が並ぶ方向に位置する両方の面に設けられていてもよい。第２のコイル部品３１２の第２の識別マーク３２５０についても、第２の固定部材３１２５の一つの壁面だけに設けられている必要はなく、第２のコイル部品３１２が有する第２の固定部材３１２５における、第１のコイル部品３１１及び第２のコイル部品３１２が並ぶ方向に位置する両方の面に設けられていてもよい。このとき、図２３に示すように、第１の識別マークの形状を、第１のコイル部品３１１及び第２のコイル部品３１２が並ぶ方向において対称とし、さらに、第１のコイル部品３１１及び第２のコイル部品３１２が並ぶ方向と直交する方向における一方側に凹部、他方側に凸部とすることで、図２４に示すように、２つだけでなく、例えば、第１のコイル部品３１１と同じ形状の第３のコイル部品３１３を加えて、３つ以上のコイル部品を隣り合うように基板５１上に配置できる。これに加え、各実施の形態を組み合わせてもよい。 Further, the first identification mark 3150 of the first coil component 311 does not have to be provided only on one wall surface of the first fixing member 3115, and the first fixing member of the first coil component 311 has. It may be provided on both surfaces of the 3115, which are located in the direction in which the first coil component 311 and the second coil component 312 are arranged side by side. The second identification mark 3250 of the second coil component 312 also does not need to be provided on only one wall surface of the second fixing member 3125, and the second fixing member 3125 included in the second coil component 312. The first coil component 311 and the second coil component 312 may be provided on both surfaces of the above. At this time, as shown in FIG. 23, the shape of the first identification mark is symmetrical in the direction in which the first coil component 311 and the second coil component 312 are lined up, and further, the first coil component 311 and the second coil component 311 and the second coil component 312 are arranged. By forming a concave portion on one side and a convex portion on the other side in a direction orthogonal to the direction in which the coil parts 312 of the above are arranged, not only two but, for example, the same as the first coil part 311 as shown in FIG. 24. A third coil component 313 of the shape can be added, and three or more coil components can be arranged adjacent to each other on the substrate 51. In addition to this, each embodiment may be combined.
３　車載充電器、５１　基板、３１１　第１のコイル部品、３１２　第２のコイル部品、３１１０　第１のコモンモードチョークコイル、３１１１　コア、３１１２　導線、３１１３　導線、３１１５　第１の固定部材、３１５０　第１の識別マーク、３１２０　第２のコモンモードチョークコイル、３１２１　コア、３１２２　導線、３１２３　導線、３１２５　第２の固定部材、３２５０　第２の識別マーク 3 In-vehicle charger, 51 board, 311 first coil part, 312 second coil part, 3110 first common mode choke coil, 3111 core, 3112 conductor wire, 3113 conductor wire, 3115 first fixing member, 3150 first Identification mark, 3120, 2nd common mode choke coil, 3121 core, 3122 lead wire, 3123 lead wire, 3125, 2nd fixing member, 3250, 2nd identification mark

Claims (5)

  1. 　第１のコモンモードチョークコイル、及び前記第１のコモンモードチョークコイルが固定される部材であって、前記第１のコモンモードチョークコイルの導線が前記第１のコモンモードチョークコイルのコアに巻かれる方向である第１の巻き方向を示す第１の識別マークが設けられた第１の固定部材を有する第１のコイル部品と、
    　前記第１のコモンモードチョークコイルと電気的に接続された第２のコモンモードチョークコイル、及び前記第２のコモンモードチョークコイルが固定される部材であって、前記第２のコモンモードチョークコイルの導線が前記第２のコモンモードチョークコイルのコアに巻かれる方向である第２の巻き方向を示す第２の識別マークが設けられた第２の固定部材を有する第２のコイル部品と、
    　前記第１のコイル部品及び前記第２のコイル部品が隣り合うように配置される基板と、を備え、
    　前記第１のコイル部品と前記第２のコイル部品とは、前記第１のコイル部品と前記第２のコイル部品とが並ぶ方向において前記第１の巻き方向と前記第２の巻き方向とが反対になるように前記基板に並べられている、車載充電器。     A member to which the first common mode choke coil and the first common mode choke coil are fixed, and the conductor of the first common mode choke coil is wound around the core of the first common mode choke coil. A first coil component having a first fixing member provided with a first identification mark indicating a first winding direction, which is a direction, and a first coil component.
    A member to which a second common mode choke coil electrically connected to the first common mode choke coil and the second common mode choke coil are fixed, the second common mode choke coil. A second coil component having a second fixing member provided with a second identification mark indicating a second winding direction in which the lead wire is wound around the core of the second common mode choke coil.
    The first coil component and the substrate on which the second coil component is arranged so as to be adjacent to each other are provided.
    The first coil component and the second coil component have opposite the first winding direction and the second winding direction in the direction in which the first coil component and the second coil component are lined up. In-vehicle chargers arranged on the board so as to be.
  2. 　前記第１の識別マークは、前記第１の固定部材における前記第２のコイル部品に対して反対方向に突出する第１の凸部であり、
    　前記基板に並べられた、前記第１のコイル部品と前記第２のコイル部品との隙間の幅は、前記第１の凸部の高さよりも狭い、請求項１に記載の車載充電器。     The first identification mark is a first convex portion of the first fixing member that projects in the opposite direction to the second coil component.
    The vehicle-mounted charger according to claim 1, wherein the width of the gap between the first coil component and the second coil component arranged on the substrate is narrower than the height of the first convex portion.
  3. 　前記第２の識別マークは、前記第２の固定部材における前記第１のコイル部品に対して反対方向に突出する第２の凸部であり、
    　前記基板に並べられた、前記第１のコイル部品と前記第２のコイル部品との隙間の幅は、前記第２の凸部の高さよりも狭い、請求項１又は請求項２に記載の車載充電器。     The second identification mark is a second convex portion of the second fixing member that projects in the opposite direction to the first coil component.
    The vehicle according to claim 1 or 2, wherein the width of the gap between the first coil component and the second coil component arranged on the substrate is narrower than the height of the second convex portion. Charger.
  4. 　前記第１の識別マークは、前記第１のコイル部品と前記第２のコイル部品とが並ぶ方向に突出する第１の凸部、及び前記第１の固定部材における前記第１の凸部が設けられた面に位置し、前記第１のコイル部品と前記第２のコイル部品とが並ぶ方向に凹む第１の凹部であり、
    　前記第２の識別マークは、前記第１のコイル部品と前記第２のコイル部品とが並ぶ方向に突出する第２の凸部、及び前記第２の固定部材における前記第２の凸部が設けられた面に位置し、前記第１のコイル部品と前記第２のコイル部品とが並ぶ方向に凹む第２の凹部である、請求項１に記載の車載充電器。     The first identification mark is provided with a first convex portion protruding in a direction in which the first coil component and the second coil component are aligned, and the first convex portion of the first fixing member. It is a first recess that is located on the surface and is recessed in the direction in which the first coil component and the second coil component are aligned.
    The second identification mark is provided with a second convex portion protruding in the direction in which the first coil component and the second coil component are aligned, and the second convex portion of the second fixing member. The vehicle-mounted charger according to claim 1, which is a second recess that is located on the surface and is recessed in the direction in which the first coil component and the second coil component are aligned.
  5. 　前記第１のコイル部品と前記第２のコイル部品とは、同じ形状である、請求項１から請求項４のいずれか一項に記載の車載充電器。 The vehicle-mounted charger according to any one of claims 1 to 4, wherein the first coil component and the second coil component have the same shape.
PCT/JP2020/015192 2020-04-02 2020-04-02 Vehicle-mounted charger WO2021199404A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5624910A (en) * 1979-08-07 1981-03-10 Tdk Corp Multiple type inductor
JP3141709U (en) * 2008-02-29 2008-05-22 スミダコーポレーション株式会社 Coil parts
JP2017112156A (en) * 2015-12-15 2017-06-22 株式会社村田製作所 Common mode choke coil
JP2020009900A (en) * 2018-07-09 2020-01-16 株式会社トーキン Noise filter and manufacturing method of noise filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5624910A (en) * 1979-08-07 1981-03-10 Tdk Corp Multiple type inductor
JP3141709U (en) * 2008-02-29 2008-05-22 スミダコーポレーション株式会社 Coil parts
JP2017112156A (en) * 2015-12-15 2017-06-22 株式会社村田製作所 Common mode choke coil
JP2020009900A (en) * 2018-07-09 2020-01-16 株式会社トーキン Noise filter and manufacturing method of noise filter

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