WO2016063652A1 - Charger - Google Patents

Charger Download PDF

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Publication number
WO2016063652A1
WO2016063652A1 PCT/JP2015/075892 JP2015075892W WO2016063652A1 WO 2016063652 A1 WO2016063652 A1 WO 2016063652A1 JP 2015075892 W JP2015075892 W JP 2015075892W WO 2016063652 A1 WO2016063652 A1 WO 2016063652A1
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Prior art keywords
charger
capacitor
output
power conversion
conversion circuits
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PCT/JP2015/075892
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French (fr)
Japanese (ja)
Inventor
伊藤　智之
守 倉石
慎司 広瀬
和寛 新村
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株式会社豊田自動織機
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Publication of WO2016063652A1 publication Critical patent/WO2016063652A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • 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

  • a charger for example, there is a charger that converts AC power supplied from a commercial power source into DC power and supplies it to a power storage device via a charging cable when a switching element is turned on and off.
  • JP 2004-23825 A JP-A-4-114505 JP-A-8-294275
  • the present invention aims to reduce noise included in the output of the charger.
  • the charger of the embodiment includes a normal mode filter at each output stage, and a plurality of power conversion circuits connected in parallel to each other, and a connection point between the output terminals of each of the power conversion circuits, to the output terminal side of the charger.
  • a common mode choke disposed between the output terminal of the charger and the ground and the connection point between the output terminal of the charger and the output terminals of the power conversion circuits.
  • a coil disposed between the output terminal of the charger and the ground and the connection point between the output terminal of the charger and the output terminals of the power conversion circuits.
  • noise included in the output of the charger can be reduced.
  • FIG. 1 It is a figure which shows an example of the charger of embodiment.
  • A is a figure which shows an example of the frequency characteristic of a normal mode filter.
  • B is a figure which shows an example of the frequency characteristic of a capacitor
  • C is a figure which shows an example of the frequency characteristic of a common mode choke coil.
  • FIG. 1 is a diagram illustrating an example of the charger according to the embodiment.
  • a charger 1 shown in FIG. 1 is a ground-side charger that charges a vehicle 3 such as an electric forklift or a plug-in hybrid vehicle, and converts AC power supplied from a commercial power source 2 into DC power. Is supplied via the charging cable 5 to the power storage device 4 mounted on the battery.
  • the charger 1 also includes three power conversion circuits 6 to 8 connected in parallel to each other, capacitors 9 to 11, and a common mode choke coil 12. Each of the power conversion circuits 6 to 8 converts AC power supplied from the commercial power supply 2 into DC power. The electric powers output from the power conversion circuits 6 to 8 are combined into one, noise is reduced by the common mode choke coil 12 and the capacitors 9 to 11, and then supplied to the power storage device 4 via the charging cable 5.
  • the Note that the number of power conversion circuits provided in the charger 1 is not limited to three.
  • One end of the capacitor 9 is connected to one output terminal 13 of the charger 1, and the other end of the capacitor 9 is connected to the ground connected to the commercial power supply 2 via the FG (frame ground, housing ground) of the charger 1. It is connected.
  • One end of the capacitor 10 is connected to the other output terminal 14 of the charger 1, and the other end of the capacitor 10 is connected to the ground connected to the commercial power source 2 through the FG (frame ground, housing ground) of the charger 1. It is connected. That is, the capacitors 9 and 10 are so-called Y capacitors, which are provided between the output terminals 13 and 14 of the charger 1 and the ground connected to the commercial power source 2, and are output from the power conversion circuits 6 to 8.
  • the noise included in the electric power output to the charging cable 5 is reduced by flowing the noise included in the electric power collected in (5) to the ground. Note that either one of the capacitors 9 and 10 may be omitted.
  • the capacitor 11 is included in the power output to the charging cable 5 by causing noise included in the power output from the output terminals 15 of the power conversion circuits 6 to 8 to flow to the output terminals 16 of the power conversion circuits 6 to 8. Reduce noise.
  • the capacitors 9 to 11 are arranged on the output terminals 13 and 14 side from the connection points A and B between the output terminals 15 and 16 of the power conversion circuits 6 to 8.
  • one end of one coil 121 of the common mode choke coil 12 is connected to a connection point A between the output terminals 15 of the power conversion circuits 6 to 8, and the other end of the coil 121 is connected to the output terminal 13.
  • One end of the other coil 122 of the common mode choke coil 12 is connected to a connection point B between the output terminals 16 of the power conversion circuits 6 to 8, and the other end of the coil 122 is connected to the output terminal 14. That is, the common mode choke coil 12 is provided between the output terminals 13 and 14 of the charger 1 and the connection points A and B between the output terminals 15 and 16 of the power conversion circuits 6 to 8.
  • the common mode choke coil 12 reduces noise included in the power output to the charging cable 5 by reducing common mode noise.
  • the power conversion circuits 6 to 8 include diodes 17 to 23, coils 24 to 26, capacitors 27 to 31, a transformer 32, MOSFETs (Metal Oxide Semiconductor Field Effect Transistor) 33 to 37, and control units 38 to 37, respectively. 40.
  • the control units 38 to 40 are composed of, for example, an IC (Integrated Circuit), a CPU (Central Processing Unit), a multi-core CPU, a programmable device (FPGA (Field Programmable Gate Array), PLD (Programmable Logic Device), etc.).
  • the cathode terminal of the diode 17 is connected to the input terminals of the charger 1 (power conversion circuits 6, 8: input terminal R, power conversion circuit 7: input terminal S) and the anode terminal of the diode 18, and the anode terminal of the diode 19 is charged. It is connected to the input terminal (power conversion circuit 6, 7: input terminal T, power conversion circuit 8: input terminal S) of the device 1 and the cathode terminal of the diode 20.
  • the cathode terminal of the diode 18 is connected to the cathode terminal of the diode 19 and one end of the coil 24, and the anode terminal of the diode 20 is connected to the anode terminal of the diode 17, the source terminal of the MOSFET 33, and one end of the capacitor 27.
  • the other end of the coil 24 is connected to the drain terminal of the MOSFET 33 and the anode terminal of the diode 21.
  • the cathode terminal of the diode 21 is connected to the other end of the capacitor 27.
  • the control unit 38 outputs a control signal for turning on and off the MOSFET 33 to the gate terminal of the MOSFET 33.
  • the drain terminal of the MOSFET 34 is connected to the other end of the capacitor 27, and the source terminal of the MOSFET 34 is connected to the drain terminal of the MOSFET 35, one end of the capacitor 28, and one end of the coil 25.
  • the source terminal of the MOSFET 35 is connected to the other end of the capacitor 28 and one end of the capacitor 29.
  • One end of the primary coil 321 of the transformer 32 is connected to the other end of the coil 25, and the other end of the primary coil 321 is connected to the other end of the capacitor 29.
  • One end of the secondary coil 322 of the transformer 32 is connected to the anode terminal of the diode 22, the middle point of the secondary coil 322 is connected to the negative terminal of the capacitor 30, and the other end of the secondary coil 322 is the anode of the diode 23. Connected to the terminal.
  • the cathode terminal of the diode 22 is connected to the positive terminal of the capacitor 30 and the cathode terminal of the diode 23.
  • the drain terminal of the MOSFET 36 is connected to the positive terminal of the capacitor 30, and the source terminal of the MOSFET 36 is connected to the drain terminal of the MOSFET 37 and one end of the coil 26.
  • the source terminal of the MOSFET 37 is connected to the negative terminal of the capacitor 30, one end of the capacitor 31, and the output terminal 16.
  • the other end of the coil 26 is connected to the other end of the capacitor 31 and the output terminal 15.
  • the coil 26, the capacitor 31, the MOSFETs 36 and 37, and the control unit 40 constitute a non-insulated DC / DC converter.
  • the output voltage of the isolated DC / DC converter (voltage applied to the capacitor 30) is stepped down when the MOSFETs 36 and 37 are alternately turned on and off.
  • the coil 26 and the capacitor 31 provided in the output stages of the power conversion circuits 6 to 8 are elements necessary for stepping down the output voltage of the isolated DC / DC converter.
  • the MOSFETs 33 to 37 function as a normal mode filter (low pass filter) for reducing relatively high frequency noise such as switching noise and ringing noise generated in the power conversion circuits 6 to 8 by switching operation. be able to.
  • the frequency band fb1 of the signal whose amplitude is to be attenuated is switching noise or ringing.
  • noise included in the electric power output from the power conversion circuits 6 to 8 (noise and output that could not be removed by the normal mode filter including the coil 26 and the capacitor 31).
  • the frequency band fb2 of the signal whose amplitude is to be attenuated (frequency band having a small impedance centered on the self-resonant frequency fo) It is desirable to select the capacitors 9 and 10 so as to coincide with or substantially coincide with the frequency band of noise included in the electric power output from ⁇ 8. As a result, noise included in the power output from the power conversion circuits 6 to 8 can be reduced, so that the noise included in the power output from the charger 1 via the charging cable 5 can be reduced. Further reduction can be achieved.
  • the common mode noise is It is reduced by the common mode choke coil 12 provided immediately before the output terminals 13 and 14.
  • the frequency band fb3 frequency band having a relatively high impedance
  • the common mode choke coil 12 is desirable to select the common mode choke coil 12 so as to match.
  • the frequency band of noise generated in the power conversion circuits 6 to 8 the frequency band of noise included in the power output from the power conversion circuits 6 to 8 and the frequency band of common mode noise are mutually equal. If they are the same, it is desirable that the frequency band fb1, the frequency band fb2, and the frequency band fb3 match or substantially match each other.
  • the frequency band of noise generated in the power conversion circuits 6 to 8, the frequency band of noise included in the power output from the power conversion circuits 6 to 8 and the frequency band of common mode noise are mutually equal. When they are different, it is desirable to make the frequency band fb1, the frequency band fb2, and the frequency band fb3 different from each other.
  • noise included in the power output from the power conversion circuits 6 to 8 is reduced by the capacitor 11 provided between the output terminals 13 and 14. Thereby, the noise contained in the electric power output via the charging cable 5 from the charger 1 can further be reduced.
  • the capacitors 9 to 11 and the common mode choke coil 12 are shared and provided immediately before the output terminals 13 and 14, and therefore the capacitors 9 to 11 and the common mode choke coil 12 are respectively connected to the power.
  • the number of parts can be reduced, and the increase in circuit scale and cost can be reduced.
  • the charger 1 of the embodiment may be adopted as a charger mounted on the vehicle 3.

Abstract

A charger 1 provided with: power conversion circuits 6-8 that are connected in parallel to one another, and that are each provided with a normal mode filter comprising a coil 26 and a capacitor 31 in the output stage; capacitors 9, 10 provided between output terminals 13, 14 of the charger 1 and an earth; and a common mode choke coil 12 provided between the output terminals 13, 14 of the charger 1 and connection points A, B of output terminals in the power conversion circuits 6-8.

Description

充電器Charger
　本発明は、充電器の出力に含まれるノイズの低減技術に関する。 The present invention relates to a technique for reducing noise included in the output of a charger.
　電動フォークリフトやプラグインハイブリッド車など、電動モータの動力を利用して走行する車両の普及に伴い、車両へ充電する地上側の充電器、もしくは車両に搭載される蓄電装置に電力を供給する充電器の性能の向上が図られている。 With the spread of vehicles that use the power of electric motors, such as electric forklifts and plug-in hybrid vehicles, chargers on the ground that charge vehicles, or chargers that supply power to power storage devices mounted on vehicles Improvements in performance have been made.
　このような充電器として、例えば、スイッチング素子がオンオフすることにより、商用電源から供給される交流電力を直流電力に変換し充電ケーブルを介して蓄電装置に供給するものがある。 As such a charger, for example, there is a charger that converts AC power supplied from a commercial power source into DC power and supplies it to a power storage device via a charging cable when a switching element is turned on and off.
　しかしながら、このような充電器は、スイッチング素子がオンオフすることにより、スイッチングノイズやリンギングノイズなどが充電器の出力に含まれてしまう。 However, in such a charger, when the switching element is turned on / off, switching noise, ringing noise, and the like are included in the output of the charger.
　そこで、充電器の出力段にフィルタを備えるものがある。例えば、特許文献１～３参照。 Therefore, some chargers are equipped with a filter at the output stage. For example, see Patent Documents 1 to 3.
特開２００４－２３８２５号公報JP 2004-23825 A 特開平４－１１４５０５号公報JP-A-4-114505 特開平８－２９４２７５号公報JP-A-8-294275
　本発明は、充電器の出力に含まれるノイズを低減することを目的とする。 The present invention aims to reduce noise included in the output of the charger.
　実施形態の充電器は、それぞれ出力段にノーマルモードフィルタを備え、互いに並列接続される複数の電力変換回路と、前記各電力変換回路の出力端子同士の接続点から当該充電器の出力端子側に配置され、かつ、当該充電器の出力端子とアースとの間に設けられるコンデンサと、当該充電器の出力端子と前記各電力変換回路の出力端子同士の接続点との間に設けられるコモンモードチョークコイルとを備える。 The charger of the embodiment includes a normal mode filter at each output stage, and a plurality of power conversion circuits connected in parallel to each other, and a connection point between the output terminals of each of the power conversion circuits, to the output terminal side of the charger. A common mode choke disposed between the output terminal of the charger and the ground and the connection point between the output terminal of the charger and the output terminals of the power conversion circuits. A coil.
　本発明によれば、充電器の出力に含まれるノイズを低減することができる。 According to the present invention, noise included in the output of the charger can be reduced.
実施形態の充電器の一例を示す図である。It is a figure which shows an example of the charger of embodiment. （ａ）はノーマルモードフィルタの周波数特性の一例を示す図である。（ｂ）はコンデンサの周波数特性の一例を示す図である。（ｃ）はコモンモードチョークコイルの周波数特性の一例を示す図である。(A) is a figure which shows an example of the frequency characteristic of a normal mode filter. (B) is a figure which shows an example of the frequency characteristic of a capacitor | condenser. (C) is a figure which shows an example of the frequency characteristic of a common mode choke coil.
　図１は、実施形態の充電器の一例を示す図である。 FIG. 1 is a diagram illustrating an example of the charger according to the embodiment.
　図１に示す充電器１は、電動フォークリフトやプラグインハイブリッド車などの車両３へ充電する地上側の充電器であって、商用電源２から供給される交流電力を直流電力に変換し、車両３に搭載される蓄電装置４に充電ケーブル５を介して供給する。 A charger 1 shown in FIG. 1 is a ground-side charger that charges a vehicle 3 such as an electric forklift or a plug-in hybrid vehicle, and converts AC power supplied from a commercial power source 2 into DC power. Is supplied via the charging cable 5 to the power storage device 4 mounted on the battery.
　また、充電器１は、互いに並列接続される３つの電力変換回路６～８と、コンデンサ９～１１と、コモンモードチョークコイル１２とを備える。電力変換回路６～８は、それぞれ、商用電源２から供給される交流電力を直流電力に変換する。電力変換回路６～８から出力される各電力は、一つにまとめられてコモンモードチョークコイル１２やコンデンサ９～１１によりノイズが低減された後、蓄電装置４に充電ケーブル５を介して供給される。なお、充電器１に備えられる電力変換回路の数は３つに限定されない。 The charger 1 also includes three power conversion circuits 6 to 8 connected in parallel to each other, capacitors 9 to 11, and a common mode choke coil 12. Each of the power conversion circuits 6 to 8 converts AC power supplied from the commercial power supply 2 into DC power. The electric powers output from the power conversion circuits 6 to 8 are combined into one, noise is reduced by the common mode choke coil 12 and the capacitors 9 to 11, and then supplied to the power storage device 4 via the charging cable 5. The Note that the number of power conversion circuits provided in the charger 1 is not limited to three.
　コンデンサ９の一方端は充電器１の一方の出力端子１３に接続され、コンデンサ９の他方端は充電器１のFG(フレームグラウンド、筐体アース)を介して商用電源２に接続されるアースに接続されている。コンデンサ１０の一方端は充電器１の他方の出力端子１４に接続され、コンデンサ１０の他方端は充電器１のFG(フレームグラウンド、筐体アース)を介して商用電源２に接続されるアースに接続されている。すなわち、コンデンサ９、１０はいわゆるＹコンデンサであって、充電器１の出力端子１３、１４と商用電源２に接続されるアースとの間に設けられ、電力変換回路６～８から出力され一つにまとめられた電力に含まれるノイズをアースへ流すことで充電ケーブル５へ出力される電力に含まれるノイズを低減する。なお、コンデンサ９、１０のどちらか一方を省略してもよい。 One end of the capacitor 9 is connected to one output terminal 13 of the charger 1, and the other end of the capacitor 9 is connected to the ground connected to the commercial power supply 2 via the FG (frame ground, housing ground) of the charger 1. It is connected. One end of the capacitor 10 is connected to the other output terminal 14 of the charger 1, and the other end of the capacitor 10 is connected to the ground connected to the commercial power source 2 through the FG (frame ground, housing ground) of the charger 1. It is connected. That is, the capacitors 9 and 10 are so-called Y capacitors, which are provided between the output terminals 13 and 14 of the charger 1 and the ground connected to the commercial power source 2, and are output from the power conversion circuits 6 to 8. The noise included in the electric power output to the charging cable 5 is reduced by flowing the noise included in the electric power collected in (5) to the ground. Note that either one of the capacitors 9 and 10 may be omitted.
　また、コンデンサ１１の一方端は出力端子１３に接続され、コンデンサ１１の他方端は出力端子１４に接続されている。コンデンサ１１は電力変換回路６～８の各出力端子１５から出力される電力に含まれるノイズを電力変換回路６～８の各出力端子１６へ流すことで充電ケーブル５へ出力される電力に含まれるノイズを低減する。 Further, one end of the capacitor 11 is connected to the output terminal 13, and the other end of the capacitor 11 is connected to the output terminal 14. The capacitor 11 is included in the power output to the charging cable 5 by causing noise included in the power output from the output terminals 15 of the power conversion circuits 6 to 8 to flow to the output terminals 16 of the power conversion circuits 6 to 8. Reduce noise.
　なお、コンデンサ９～１１は電力変換回路６～８の出力端子１５、１６同士の接続点Ａ、Ｂから出力端子１３、１４側に配置される。 The capacitors 9 to 11 are arranged on the output terminals 13 and 14 side from the connection points A and B between the output terminals 15 and 16 of the power conversion circuits 6 to 8.
　また、コモンモードチョークコイル１２の一方のコイル１２１の一方端は電力変換回路６～８の出力端子１５同士の接続点Ａに接続され、コイル１２１の他方端は出力端子１３に接続されている。コモンモードチョークコイル１２の他方のコイル１２２の一方端は電力変換回路６～８の出力端子１６同士の接続点Ｂに接続され、コイル１２２の他方端は出力端子１４に接続されている。すなわち、コモンモードチョークコイル１２は、充電器１の出力端子１３、１４と電力変換回路６～８の出力端子１５、１６同士の接続点Ａ、Ｂとの間に設けられている。コモンモードチョークコイル１２はコモンモードノイズを低減することで充電ケーブル５へ出力される電力に含まれるノイズを低減する。 Further, one end of one coil 121 of the common mode choke coil 12 is connected to a connection point A between the output terminals 15 of the power conversion circuits 6 to 8, and the other end of the coil 121 is connected to the output terminal 13. One end of the other coil 122 of the common mode choke coil 12 is connected to a connection point B between the output terminals 16 of the power conversion circuits 6 to 8, and the other end of the coil 122 is connected to the output terminal 14. That is, the common mode choke coil 12 is provided between the output terminals 13 and 14 of the charger 1 and the connection points A and B between the output terminals 15 and 16 of the power conversion circuits 6 to 8. The common mode choke coil 12 reduces noise included in the power output to the charging cable 5 by reducing common mode noise.
　電力変換回路６～８は、それぞれ、ダイオード１７～２３と、コイル２４～２６と、コンデンサ２７～３１と、トランス３２と、ＭＯＳＦＥＴ（Metal Oxide Semiconductor Field Effect Transistor）３３～３７と、制御部３８～４０とを備える。なお、制御部３８～４０は、例えば、ＩＣ（Integrated Circuit）、ＣＰＵ（Central Processing Unit）、マルチコアＣＰＵ、プログラマブルなデバイス（ＦＰＧＡ（Field Programmable Gate Array）やＰＬＤ（Programmable Logic Device）など）により構成される。 The power conversion circuits 6 to 8 include diodes 17 to 23, coils 24 to 26, capacitors 27 to 31, a transformer 32, MOSFETs (Metal Oxide Semiconductor Field Effect Transistor) 33 to 37, and control units 38 to 37, respectively. 40. The control units 38 to 40 are composed of, for example, an IC (Integrated Circuit), a CPU (Central Processing Unit), a multi-core CPU, a programmable device (FPGA (Field Programmable Gate Array), PLD (Programmable Logic Device), etc.). The
　ダイオード１７のカソード端子が充電器１の入力端子（電力変換回路６、８：入力端子Ｒ、電力変換回路７：入力端子Ｓ）及びダイオード１８のアノード端子に接続され、ダイオード１９のアノード端子が充電器１の入力端子（電力変換回路６、７：入力端子Ｔ、電力変換回路８：入力端子Ｓ）及びダイオード２０のカソード端子に接続されている。ダイオード１８のカソード端子はダイオード１９のカソード端子及びコイル２４の一方端に接続され、ダイオード２０のアノード端子はダイオード１７のアノード端子、ＭＯＳＦＥＴ３３のソース端子、及びコンデンサ２７の一方端に接続されている。コイル２４の他方端はＭＯＳＦＥＴ３３のドレイン端子及びダイオード２１のアノード端子に接続されている。ダイオード２１のカソード端子はコンデンサ２７の他方端に接続されている。制御部３８はＭＯＳＦＥＴ３３をオンオフさせるための制御信号をＭＯＳＦＥＴ３３のゲート端子に出力する。すなわち、ダイオード１７～２１、コイル２４、コンデンサ２７、ＭＯＳＦＥＴ３３、及び制御部３８は、ＰＦＣ(Power Factor Correction)回路を構成する。商用電源２から供給される交流電力は、ダイオード１７～２０により整流され、ＭＯＳＦＥＴ３３がオンオフすることにより昇圧されつつ力率が改善される。 The cathode terminal of the diode 17 is connected to the input terminals of the charger 1 (power conversion circuits 6, 8: input terminal R, power conversion circuit 7: input terminal S) and the anode terminal of the diode 18, and the anode terminal of the diode 19 is charged. It is connected to the input terminal (power conversion circuit 6, 7: input terminal T, power conversion circuit 8: input terminal S) of the device 1 and the cathode terminal of the diode 20. The cathode terminal of the diode 18 is connected to the cathode terminal of the diode 19 and one end of the coil 24, and the anode terminal of the diode 20 is connected to the anode terminal of the diode 17, the source terminal of the MOSFET 33, and one end of the capacitor 27. The other end of the coil 24 is connected to the drain terminal of the MOSFET 33 and the anode terminal of the diode 21. The cathode terminal of the diode 21 is connected to the other end of the capacitor 27. The control unit 38 outputs a control signal for turning on and off the MOSFET 33 to the gate terminal of the MOSFET 33. That is, the diodes 17 to 21, the coil 24, the capacitor 27, the MOSFET 33, and the control unit 38 constitute a PFC (Power-Factor-Correction) circuit. The AC power supplied from the commercial power source 2 is rectified by the diodes 17 to 20, and the power factor is improved while being boosted by turning on and off the MOSFET 33.
　また、ＭＯＳＦＥＴ３４のドレイン端子はコンデンサ２７の他方端に接続され、ＭＯＳＦＥＴ３４のソース端子はＭＯＳＦＥＴ３５のドレイン端子、コンデンサ２８の一方端、及びコイル２５の一方端に接続されている。ＭＯＳＦＥＴ３５のソース端子はコンデンサ２８の他方端及びコンデンサ２９の一方端に接続されている。トランス３２の一次コイル３２１の一方端はコイル２５の他方端に接続され、一次コイル３２１の他方端はコンデンサ２９の他方端に接続されている。トランス３２の二次コイル３２２の一方端はダイオード２２のアノード端子に接続され、二次コイル３２２の中点はコンデンサ３０のマイナス側端子に接続され、二次コイル３２２の他方端はダイオード２３のアノード端子に接続されている。ダイオード２２のカソード端子はコンデンサ３０のプラス側端子及びダイオード２３のカソード端子に接続されている。制御部３９はＭＯＳＦＥＴ３４がオン、ＭＯＳＦＥＴ３５がオフした後、ＭＯＳＦＥＴ３４がオフ、ＭＯＳＦＥＴ３５がオンすることを繰り返させるための制御信号をＭＯＳＦＥＴ３４、３５のそれぞれのゲート端子に出力する。すなわち、ダイオード２２～２３、コイル２５、コンデンサ２８～３０、トランス３２、ＭＯＳＦＥＴ３４～３５、及び制御部３９は、絶縁型ＤＣ／ＤＣコンバータを構成する。ＰＦＣ回路から出力される電力は、ＭＯＳＦＥＴ３４、３５が交互にオンオフすることによりトランス３２の一次コイル３２１から二次コイル３２２へ伝わり、ダイオード２２～２３により整流され、コンデンサ３０により平滑される。 The drain terminal of the MOSFET 34 is connected to the other end of the capacitor 27, and the source terminal of the MOSFET 34 is connected to the drain terminal of the MOSFET 35, one end of the capacitor 28, and one end of the coil 25. The source terminal of the MOSFET 35 is connected to the other end of the capacitor 28 and one end of the capacitor 29. One end of the primary coil 321 of the transformer 32 is connected to the other end of the coil 25, and the other end of the primary coil 321 is connected to the other end of the capacitor 29. One end of the secondary coil 322 of the transformer 32 is connected to the anode terminal of the diode 22, the middle point of the secondary coil 322 is connected to the negative terminal of the capacitor 30, and the other end of the secondary coil 322 is the anode of the diode 23. Connected to the terminal. The cathode terminal of the diode 22 is connected to the positive terminal of the capacitor 30 and the cathode terminal of the diode 23. After the MOSFET 34 is turned on and the MOSFET 35 is turned off, the control unit 39 outputs a control signal for repeating that the MOSFET 34 is turned off and the MOSFET 35 is turned on to the gate terminals of the MOSFETs 34 and 35. That is, the diodes 22 to 23, the coil 25, the capacitors 28 to 30, the transformer 32, the MOSFETs 34 to 35, and the control unit 39 constitute an insulated DC / DC converter. The power output from the PFC circuit is transmitted from the primary coil 321 of the transformer 32 to the secondary coil 322 by alternately turning on and off the MOSFETs 34 and 35, rectified by the diodes 22 to 23, and smoothed by the capacitor 30.
　また、ＭＯＳＦＥＴ３６のドレイン端子がコンデンサ３０のプラス側端子に接続され、ＭＯＳＦＥＴ３６のソース端子がＭＯＳＦＥＴ３７のドレイン端子及びコイル２６の一方端に接続されている。ＭＯＳＦＥＴ３７のソース端子はコンデンサ３０のマイナス側端子、コンデンサ３１の一方端、及び出力端子１６に接続されている。コイル２６の他方端はコンデンサ３１の他方端及び出力端子１５に接続されている。制御部４０はＭＯＳＦＥＴ３６がオン、ＭＯＳＦＥＴ３７がオフした後、ＭＯＳＦＥＴ３６がオフ、ＭＯＳＦＥＴ３７がオンすることを繰り返させるための制御信号をＭＯＳＦＥＴ３６、３７のそれぞれのゲート端子に出力する。すなわち、コイル２６、コンデンサ３１、ＭＯＳＦＥＴ３６、３７、及び制御部４０は、非絶縁型ＤＣ／ＤＣコンバータを構成する。絶縁型ＤＣ／ＤＣコンバータの出力電圧（コンデンサ３０にかかる電圧）は、ＭＯＳＦＥＴ３６、３７が交互にオンオフすることにより降圧される。 Further, the drain terminal of the MOSFET 36 is connected to the positive terminal of the capacitor 30, and the source terminal of the MOSFET 36 is connected to the drain terminal of the MOSFET 37 and one end of the coil 26. The source terminal of the MOSFET 37 is connected to the negative terminal of the capacitor 30, one end of the capacitor 31, and the output terminal 16. The other end of the coil 26 is connected to the other end of the capacitor 31 and the output terminal 15. After the MOSFET 36 is turned on and the MOSFET 37 is turned off, the control unit 40 outputs a control signal for repeating that the MOSFET 36 is turned off and the MOSFET 37 is turned on to the gate terminals of the MOSFETs 36 and 37. That is, the coil 26, the capacitor 31, the MOSFETs 36 and 37, and the control unit 40 constitute a non-insulated DC / DC converter. The output voltage of the isolated DC / DC converter (voltage applied to the capacitor 30) is stepped down when the MOSFETs 36 and 37 are alternately turned on and off.
　実施形態の充電器１において、電力変換回路６～８のそれぞれの出力段に設けられているコイル２６及びコンデンサ３１は、絶縁型ＤＣ／ＤＣコンバータの出力電圧を降圧させるために必要な素子であるが、ＭＯＳＦＥＴ３３～３７がスイッチング動作することにより電力変換回路６～８内で発生するスイッチングノイズやリンギングノイズなどの比較的高い周波数のノイズを低減するためのノーマルモードフィルタ（ローパスフィルタ）としても機能させることができる。例えば、図２（ａ）に示すノーマルモードフィルタの周波数特性において、振幅を減衰させたい信号の周波数帯域ｆｂ１（カットオフ周波数ｆｃを境にして減衰量が大きくなる周波数帯域）が、スイッチングノイズやリンギングノイズなどの周波数帯域と一致又はほぼ一致（略一致）するように、コイル２６及びコンデンサ３１を選択することが望ましい。これにより、電力変換回路６～８内で発生するノイズを低減することができるため、充電器１から充電ケーブル５を介して出力される電力に含まれるノイズを低減することができる。 In the charger 1 of the embodiment, the coil 26 and the capacitor 31 provided in the output stages of the power conversion circuits 6 to 8 are elements necessary for stepping down the output voltage of the isolated DC / DC converter. However, the MOSFETs 33 to 37 function as a normal mode filter (low pass filter) for reducing relatively high frequency noise such as switching noise and ringing noise generated in the power conversion circuits 6 to 8 by switching operation. be able to. For example, in the frequency characteristics of the normal mode filter shown in FIG. 2A, the frequency band fb1 of the signal whose amplitude is to be attenuated (frequency band in which the amount of attenuation increases with the cutoff frequency fc as a boundary) is switching noise or ringing. It is desirable to select the coil 26 and the capacitor 31 so as to match or substantially match (substantially match) a frequency band such as noise. Thereby, noise generated in the power conversion circuits 6 to 8 can be reduced, so that noise included in the power output from the charger 1 via the charging cable 5 can be reduced.
　また、実施形態の充電器１では、電力変換回路６～８から出力され一つにまとめられた電力に含まれるノイズ（コイル２６及びコンデンサ３１からなるノーマルモードフィルタにより除去しきれなかったノイズや出力端子１５と接続点Ａとの間の配線又は出力端子１６と接続点Ｂとの間の配線に存在する浮遊抵抗、浮遊容量、及び浮遊インダクタンスの影響により生じるノイズ）を、出力端子１３、１４の直前に設けられるコンデンサ９、１０を介してアースへ流し、或いはコンデンサ１１を通して出力端子１５から出力端子１６へ流している。例えば、図２（ｂ）に示すコンデンサ９又はコンデンサ１０の周波数特性において、振幅を減衰させたい信号の周波数帯域ｆｂ２（自己共振周波数ｆｏを中心とするインピーダンスが小さい周波数帯域）が、電力変換回路６～８から出力され一つにまとめられた電力に含まれるノイズの周波数帯域と一致又はほぼ一致するように、コンデンサ９、１０を選択することが望ましい。これにより、電力変換回路６～８から出力され一つにまとめられた電力に含まれるノイズを低減することができるため、充電器１から充電ケーブル５を介して出力される電力に含まれるノイズをさらに低減することができる。 Further, in the charger 1 of the embodiment, noise included in the electric power output from the power conversion circuits 6 to 8 (noise and output that could not be removed by the normal mode filter including the coil 26 and the capacitor 31). Noise generated by the influence of stray resistance, stray capacitance, and stray inductance existing in the wiring between the terminal 15 and the connection point A or in the wiring between the output terminal 16 and the connection point B. It flows to the ground through capacitors 9 and 10 provided immediately before, or flows from the output terminal 15 to the output terminal 16 through the capacitor 11. For example, in the frequency characteristics of the capacitor 9 or the capacitor 10 shown in FIG. 2B, the frequency band fb2 of the signal whose amplitude is to be attenuated (frequency band having a small impedance centered on the self-resonant frequency fo) It is desirable to select the capacitors 9 and 10 so as to coincide with or substantially coincide with the frequency band of noise included in the electric power output from ˜8. As a result, noise included in the power output from the power conversion circuits 6 to 8 can be reduced, so that the noise included in the power output from the charger 1 via the charging cable 5 can be reduced. Further reduction can be achieved.
　また、実施形態の充電器１では、コンデンサ９、１０を介してアースへ流れるノイズがコモンモードノイズとなって商用電源２を介して充電器１に再度入力されても、そのコモンモードノイズを、出力端子１３、１４の直前に設けられるコモンモードチョークコイル１２により低減している。例えば、図２（ｃ）に示すコモンモードチョークコイル１２の周波数特性において、振幅を減衰させたい信号の周波数帯域ｆｂ３（比較的インピーダンスが高い周波数帯域）が、コモンモードノイズの周波数帯域と一致又はほぼ一致するように、コモンモードチョークコイル１２を選択することが望ましい。これにより、充電器１内のコモンモードノイズを低減することができるため、充電器１から充電ケーブル５を介して出力される電力に含まれるノイズをさらに低減することができる。 In the charger 1 of the embodiment, even if the noise flowing to the ground via the capacitors 9 and 10 becomes common mode noise and is input again to the charger 1 via the commercial power supply 2, the common mode noise is It is reduced by the common mode choke coil 12 provided immediately before the output terminals 13 and 14. For example, in the frequency characteristics of the common mode choke coil 12 shown in FIG. 2C, the frequency band fb3 (frequency band having a relatively high impedance) of the signal whose amplitude is to be attenuated is substantially equal to or substantially equal to the frequency band of the common mode noise. It is desirable to select the common mode choke coil 12 so as to match. Thereby, since the common mode noise in the charger 1 can be reduced, the noise contained in the electric power output from the charger 1 via the charging cable 5 can be further reduced.
　なお、電力変換回路６～８内で発生するノイズの周波数帯域、電力変換回路６～８から出力され一つにまとめられた電力に含まれるノイズの周波数帯域、及びコモンモードノイズの周波数帯域が互いに同じである場合は、周波数帯域ｆｂ１、周波数帯域ｆｂ２、及び周波数帯域ｆｂ３を互いに一致又はほぼ一致させることが望ましい。 Note that the frequency band of noise generated in the power conversion circuits 6 to 8, the frequency band of noise included in the power output from the power conversion circuits 6 to 8 and the frequency band of common mode noise are mutually equal. If they are the same, it is desirable that the frequency band fb1, the frequency band fb2, and the frequency band fb3 match or substantially match each other.
　また、電力変換回路６～８内で発生するノイズの周波数帯域、電力変換回路６～８から出力され一つにまとめられた電力に含まれるノイズの周波数帯域、及びコモンモードノイズの周波数帯域が互いに異なる場合は、周波数帯域ｆｂ１、周波数帯域ｆｂ２、及び周波数帯域ｆｂ３を互いに異ならせることが望ましい。 The frequency band of noise generated in the power conversion circuits 6 to 8, the frequency band of noise included in the power output from the power conversion circuits 6 to 8 and the frequency band of common mode noise are mutually equal. When they are different, it is desirable to make the frequency band fb1, the frequency band fb2, and the frequency band fb3 different from each other.
　また、実施形態の充電器１では、電力変換回路６～８から出力される電力に含まれるノイズを、出力端子１３、１４の間に設けられているコンデンサ１１により低減している。これにより、充電器１から充電ケーブル５を介して出力される電力に含まれるノイズをさらに低減することができる。 Further, in the charger 1 of the embodiment, noise included in the power output from the power conversion circuits 6 to 8 is reduced by the capacitor 11 provided between the output terminals 13 and 14. Thereby, the noise contained in the electric power output via the charging cable 5 from the charger 1 can further be reduced.
　また、実施形態の充電器１では、コンデンサ９～１１及びコモンモードチョークコイル１２を共通化して出力端子１３、１４の直前に設けているため、コンデンサ９～１１及びコモンモードチョークコイル１２をそれぞれ電力変換回路６～８に備える構成に比べて、部品点数を削減することができ回路規模やコストの増大を低減することができる。 Further, in the charger 1 of the embodiment, the capacitors 9 to 11 and the common mode choke coil 12 are shared and provided immediately before the output terminals 13 and 14, and therefore the capacitors 9 to 11 and the common mode choke coil 12 are respectively connected to the power. Compared to the configuration provided in the conversion circuits 6 to 8, the number of parts can be reduced, and the increase in circuit scale and cost can be reduced.
　なお、実施形態の充電器１は、車両３に搭載される充電器として採用してもよい。 Note that the charger 1 of the embodiment may be adopted as a charger mounted on the vehicle 3.
１　充電器
２　商用電源
３　車両
４　蓄電装置
５　充電ケーブル
６～８　電力変換回路
９～１１　コンデンサ
１２　コモンモードチョークコイル
１２１、１２２　コイル
１３～１６　出力端子
１７～２３　ダイオード
２４～２６　コイル
２７～３１　コンデンサ
３２　トランス
３２１　一次コイル
３２２　二次コイル
３３～３７　ＭＯＳＦＥＴ
３８～４０　制御部
  DESCRIPTION OF SYMBOLS 1 Charger 2 Commercial power source 3 Vehicle 4 Power storage device 5 Charging cable 6-8 Power conversion circuit 9-11 Capacitor 12 Common mode choke coil 121, 122 Coil 13-16 Output terminal 17-23 Diode 24-26 Coil 27-31 Capacitor 32 Transformer 321 Primary coil 322 Secondary coil 33 to 37 MOSFET
38 to 40 Control unit

Claims (3)

  1. 　それぞれ出力段にノーマルモードフィルタを備え、互いに並列接続される複数の電力変換回路と、
    　前記各電力変換回路の出力端子同士の接続点から当該充電器の出力端子側に配置され、かつ、当該充電器の出力端子とアースとの間に設けられるコンデンサと、
    　当該充電器の出力端子と前記各電力変換回路の出力端子同士の接続点との間に設けられるコモンモードチョークコイルと、
    　を備えることを特徴とする充電器。     A plurality of power conversion circuits each having a normal mode filter at the output stage and connected in parallel to each other;
    A capacitor that is disposed on the output terminal side of the charger from the connection point between the output terminals of each of the power conversion circuits, and that is provided between the output terminal of the charger and the ground;
    A common mode choke coil provided between an output terminal of the charger and a connection point between the output terminals of the power conversion circuits;
    A charger comprising:
  2. 　請求項１に記載の充電器であって、
    　前記ノーマルモードフィルタの周波数特性において振幅を減衰させたい信号の周波数帯域、前記コンデンサの周波数特性において振幅を減衰させたい信号の周波数帯域、及び前記コモンモードチョークコイルの周波数特性において振幅を減衰させたい信号の周波数帯域を、互いに一致又はほぼ一致させる
    　ことを特徴とする充電器。     The charger according to claim 1,
    The frequency band of the signal whose amplitude is to be attenuated in the frequency characteristic of the normal mode filter, the frequency band of the signal whose amplitude is to be attenuated in the frequency characteristic of the capacitor, and the signal whose amplitude is to be attenuated in the frequency characteristic of the common mode choke coil A battery charger characterized in that the frequency bands of the two coincide with or substantially coincide with each other.
  3. 　請求項１に記載の充電器であって、
    　前記ノーマルモードフィルタの周波数特性において振幅を減衰させたい信号の周波数帯域、前記コンデンサの周波数特性において振幅を減衰させたい信号の周波数帯域、及び前記コモンモードチョークコイルの周波数特性において振幅を減衰させたい信号の周波数帯域を、互いに異ならせる
    　ことを特徴とする充電器。
          The charger according to claim 1,
    The frequency band of the signal whose amplitude is to be attenuated in the frequency characteristic of the normal mode filter, the frequency band of the signal whose amplitude is to be attenuated in the frequency characteristic of the capacitor, and the signal whose amplitude is to be attenuated in the frequency characteristic of the common mode choke coil The charger is characterized by different frequency bands.
PCT/JP2015/075892 2014-10-21 2015-09-11 Charger WO2016063652A1 (en)

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JP2014-214141 2014-10-21
JP2014214141A JP2016082792A (en) 2014-10-21 2014-10-21 Charger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019130874A1 (en) * 2017-12-27 2019-07-04 株式会社村田製作所 Power supply device
WO2023076278A1 (en) * 2021-10-27 2023-05-04 Mks Instruments, Inc. Power supply apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0464824U (en) * 1990-10-15 1992-06-04
JP2009213202A (en) * 2008-02-29 2009-09-17 Toyota Industries Corp Switching power supply device
JP2011139598A (en) * 2009-12-28 2011-07-14 Tdk Corp Power converter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0464824U (en) * 1990-10-15 1992-06-04
JP2009213202A (en) * 2008-02-29 2009-09-17 Toyota Industries Corp Switching power supply device
JP2011139598A (en) * 2009-12-28 2011-07-14 Tdk Corp Power converter

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