JP2020141494A - Power supply device for electric vehicle - Google Patents

Power supply device for electric vehicle Download PDF

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JP2020141494A
JP2020141494A JP2019035748A JP2019035748A JP2020141494A JP 2020141494 A JP2020141494 A JP 2020141494A JP 2019035748 A JP2019035748 A JP 2019035748A JP 2019035748 A JP2019035748 A JP 2019035748A JP 2020141494 A JP2020141494 A JP 2020141494A
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converter
terminal
battery
power supply
charging
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裕司 大宮
Yuji Omiya
裕司 大宮
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Toyota Motor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Abstract

To provide a power supply device for an electric vehicle in which a large noise is added to an external charging current supply facility via a DC terminal when a DC/DC converter operates, in the case of the electric vehicle equipped with the DC terminal connected to a charging current supply facility provided outside the vehicle, and the DC/DC converter that supplies power to auxiliary equipment.SOLUTION: An electric vehicle includes a conversion circuit that converts alternating current into a direct current, and a smoothing circuit that smoothens the converted direct current, in order to charge using an alternating current power source outside the vehicle. Utilizing this, a high-voltage side of a DC/DC converter is connected to the wiring that connects the conversion circuit and the smoothing circuit. The smoothing circuit doubles as a filter that removes noise from the DC/DC converter.SELECTED DRAWING: Figure 2

Description

本明細書は、電動自動車の電源装置を開示する。 The present specification discloses a power supply device for an electric vehicle.

本明細書でいう「電動自動車」は、走行用モータに電力を供給する電池を自動車外から充電可能な自動車を意味する。従って本明細書における「電気自動車」には、走行用モータとエンジンの双方を備えるいわゆるＰＨＶをも含む。 As used herein, the term "electric vehicle" means a vehicle that can charge a battery that supplies electric power to a traveling motor from outside the vehicle. Therefore, the "electric vehicle" in the present specification also includes a so-called PHV including both a traveling motor and an engine.

電動自動車は、図１の概略図に示すように、交流端子２６と、交流を直流に変換する変換回路３０と、変換された直流を平滑化する平滑回路６０と、電池１０とを備えている。交流端子２６は、変換回路３０と平滑回路６０を介して電池１０に接続されており、自動車外に設けられている交流電源２２に接続すると、変換回路３０と平滑回路６０によって充電電流に変換し、得られた充電電流を電池１０に供給して電池１０を充電する。 As shown in the schematic diagram of FIG. 1, the electric vehicle includes an AC terminal 26, a conversion circuit 30 that converts alternating current into direct current, a smoothing circuit 60 that smoothes the converted direct current, and a battery 10. .. The AC terminal 26 is connected to the battery 10 via the conversion circuit 30 and the smoothing circuit 60, and when connected to the AC power supply 22 provided outside the automobile, the conversion circuit 30 and the smoothing circuit 60 convert the AC terminal 26 into a charging current. , The obtained charging current is supplied to the battery 10 to charge the battery 10.

また、電動自動車は、ＤＣ／ＤＣコンバータ７０を車載しており、ＤＣ／ＤＣコンバータ７０で変換された直流電力を補機８０に供給する。ＤＣ／ＤＣコンバータ７０は電池１０に接続されており、電池１０から補機８０に給電可能となっている。なお、実際には、補機８０と並列に補機用電池(図１では図示しない)が接続されており、通常は補機用電池から補機に電力を供給する。ＤＣ／ＤＣコンバータ７０は、電池１０の電力で補機用電池を充電したり、あるいは電池１０から補機８０に電力を供給したりする際に動作する。充電中の補機用電池は、補機８０の一つということができる。 Further, the electric vehicle has a DC / DC converter 70 mounted on the vehicle, and supplies the DC power converted by the DC / DC converter 70 to the auxiliary machine 80. The DC / DC converter 70 is connected to the battery 10, and the battery 10 can supply power to the auxiliary machine 80. In reality, an auxiliary machine battery (not shown in FIG. 1) is connected in parallel with the auxiliary machine 80, and power is normally supplied from the auxiliary machine battery to the auxiliary machine. The DC / DC converter 70 operates when charging the auxiliary battery with the electric power of the battery 10 or supplying electric power from the battery 10 to the auxiliary machine 80. The auxiliary battery during charging can be said to be one of the auxiliary 80s.

特許文献１は、上記に加えて直流端子６を備えている電動自動車を開示している。直流端子６は、サービスエリアといった自動車外に設けられている充電電流供給設備２に接続して用いる。充電機能を備えている充電電流供給設備２が、社会のインフラストラクチャとして各所に設けられている。充電電流供給設備２は直流電力を供給することができる。充電電流供給設備２を利用すると、交流電源２２を利用する場合より大きな充電電流を供給することができ、電池１０を急速充電することができる。なお、充電電流を供給するという場合、電池の充電に適した充電電流に制御して供給することをいい、充電完了後には充電電流の供給を停止する。 Patent Document 1 discloses an electric vehicle provided with a DC terminal 6 in addition to the above. The DC terminal 6 is used by being connected to a charging current supply facility 2 provided outside the automobile such as a service area. Charging current supply equipment 2 having a charging function is provided in various places as a social infrastructure. The charging current supply facility 2 can supply DC power. When the charging current supply facility 2 is used, a larger charging current can be supplied than when the AC power supply 22 is used, and the battery 10 can be charged quickly. When the charging current is supplied, it means that the charging current is controlled and supplied to be suitable for charging the battery, and the supply of the charging current is stopped after the charging is completed.

特開２０１５−０１２６４１号公報Japanese Unexamined Patent Publication No. 2015-012641

図１の電源装置によると、直流端子６を車外の充電電流供給設備２に接続して急速充電しながら、ＤＣ／ＤＣコンバータ７０を運転して補機８０を駆動することができる。しかしながら、ＤＣ／ＤＣコンバータ７０の動作によってノイズが発生し、そのノイズが直流端子６を介して車外の充電電流供給設備２に伝搬し、車外の充電電流供給設備２に悪影響を及ぼすことがある。 According to the power supply device of FIG. 1, the DC / DC converter 70 can be operated to drive the auxiliary machine 80 while the DC terminal 6 is connected to the charging current supply facility 2 outside the vehicle for quick charging. However, noise is generated by the operation of the DC / DC converter 70, and the noise may propagate to the charging current supply facility 2 outside the vehicle via the DC terminal 6 and adversely affect the charging current supply facility 2 outside the vehicle.

本明細書では、直流端子６を利用して充電している最中にＤＣ／ＤＣコンバータ７０が動作しても、充電電流供給設備２に悪影響を及ぼさない技術を開示する。上記目的に最も率直な対応は、ＤＣ／ＤＣコンバータ７０と直流端子６の間にノイズ除去フィルタを設けることである。しかしこの技術では、新たにノイズ除去フィルタを設けることが必要となり、コストアップを招き、かつ、小型化を損ねてしまう。本明細書では、安価に、かつ小型化に損ねることなく、充電電流供給設備２に悪影響を及ぼさないようにする技術を開示する。 This specification discloses a technique that does not adversely affect the charging current supply facility 2 even if the DC / DC converter 70 operates during charging using the DC terminal 6. The most frank response to the above object is to provide a noise reduction filter between the DC / DC converter 70 and the DC terminal 6. However, with this technology, it is necessary to newly provide a noise reduction filter, which leads to an increase in cost and impairs miniaturization. In the present specification, a technique is disclosed that is inexpensive, does not impair miniaturization, and does not adversely affect the charging current supply facility 2.

本明細書が開示する電源装置は、図２に概略を示すように、直流端子６と、交流端子２６と、交流を直流に変換する変換回路３０と、変換された直流を平滑化する平滑回路６０と、電池１０と、ＤＣ／ＤＣコンバータ７０と、補機８０を車載している。直流端子６は電池１０に接続されている。直流端子６を、充電機能を備えている車外設備２に接続すると、車外設備２が供給する充電電流を電池１０に供給して電池１０を充電する。交流端子２６は、変換回路３０と平滑回路６０を介して電池１０に接続されている。交流端子２６を車外に設けられている交流電源２２に接続すると、変換回路３０と平滑回路６０によって得られた充電電流を電池１０に供給して電池１０を充電する。ＤＣ／ＤＣコンバータ７０の高圧側配線は、変換回路３０と平滑回路６０を接続する配線に接続されている。ＤＣ／ＤＣコンバータ７０の低圧側配線は、補機８０に接続されている。ＤＣ／ＤＣコンバータ７０は、変換した直流電力を補機８０に供給する。 The power supply device disclosed in the present specification includes a DC terminal 6, an AC terminal 26, a conversion circuit 30 that converts alternating current to direct current, and a smoothing circuit that smoothes the converted direct current, as outlined in FIG. A 60, a battery 10, a DC / DC converter 70, and an auxiliary machine 80 are mounted on the vehicle. The DC terminal 6 is connected to the battery 10. When the DC terminal 6 is connected to the vehicle exterior equipment 2 having a charging function, the charging current supplied by the vehicle exterior equipment 2 is supplied to the battery 10 to charge the battery 10. The AC terminal 26 is connected to the battery 10 via a conversion circuit 30 and a smoothing circuit 60. When the AC terminal 26 is connected to the AC power supply 22 provided outside the vehicle, the charging current obtained by the conversion circuit 30 and the smoothing circuit 60 is supplied to the battery 10 to charge the battery 10. The high-voltage side wiring of the DC / DC converter 70 is connected to the wiring connecting the conversion circuit 30 and the smoothing circuit 60. The low-voltage side wiring of the DC / DC converter 70 is connected to the auxiliary machine 80. The DC / DC converter 70 supplies the converted DC power to the auxiliary machine 80.

上記電源装置によると、ＤＣ／ＤＣコンバータ７０の動作に伴って発生するノイズは、平滑回路６０を介して充電電流供給設備（充電器機能を備えている設備）２に伝搬する。平滑回路６０は、リアクトルやコンデンサといった電子部品で構成されており、ノイズ除去フィルタとして動作する。上記電源装置によると、ノイズが除去されてから充電電流供給設備２に伝搬することから、充電電流供給設備２に悪影響を及ぼさないようにできる。またノイズ除去フィルタに用いる平滑回路６０は、もともと必要な部品であり、新たな部品を必要としない。対策に要するコストアップはほとんどない。 According to the power supply device, the noise generated by the operation of the DC / DC converter 70 propagates to the charging current supply facility (equipment having a charger function) 2 via the smoothing circuit 60. The smoothing circuit 60 is composed of electronic components such as a reactor and a capacitor, and operates as a noise reduction filter. According to the power supply device, since the noise is removed and then propagated to the charging current supply facility 2, it is possible to prevent the charging current supply facility 2 from being adversely affected. Further, the smoothing circuit 60 used for the noise reduction filter is originally a necessary component and does not require a new component. There is almost no cost increase required for countermeasures.

上記の結果、交流電源２２を利用して充電している間にＤＣ／ＤＣコンバータ７０が動作すると、平滑化前の充電電流がＤＣ／ＤＣコンバータ７０に入力されることになる。また、ＤＣ／ＤＣコンバータ７０の動作に伴って発生するノイズが変換回路３０を介して車外の交流電源２２に伝搬することになる。しかしながら、これらは問題とならない。その理由の一つは、直流端子６を利用する急速充電中は補機８０を使用する機会が多いのに対し、交流端子２６を利用する普通充電中は補機８０を使用する機会が少ないことにある。交流端子２６を利用する普通充電は、深夜等の車中に人がいない状態で行われることが多いからである。また、ＤＣ／ＤＣコンバータ７０はノイズに対する耐性が高く設定されていることから、普通充電中に補機８０が動作するようなことがあっても問題となることはない。また変換回路３０はトランス等を含んであり、それ自体によってノイズ減衰効果が得られる。そのために、普通充電中に補機８０が動作するようなことがあっても、車外の交流電源２２に悪影響を及ぼすことがない。 As a result of the above, if the DC / DC converter 70 operates while charging using the AC power supply 22, the charging current before smoothing is input to the DC / DC converter 70. Further, the noise generated by the operation of the DC / DC converter 70 is propagated to the AC power supply 22 outside the vehicle via the conversion circuit 30. However, these are not a problem. One of the reasons is that the auxiliary machine 80 is often used during quick charging using the DC terminal 6, whereas the auxiliary machine 80 is rarely used during normal charging using the AC terminal 26. It is in. This is because normal charging using the AC terminal 26 is often performed in the middle of the night or the like when there are no people in the vehicle. Further, since the DC / DC converter 70 is set to have high resistance to noise, there is no problem even if the auxiliary machine 80 operates during normal charging. Further, the conversion circuit 30 includes a transformer and the like, and a noise attenuation effect can be obtained by itself. Therefore, even if the auxiliary machine 80 operates during normal charging, it does not adversely affect the AC power supply 22 outside the vehicle.

本技術は、図２に示す各種装置の特性と利用方法の実態に関する考察から得られたものであり、図１から図２への変更はわずかなものに見えるかもしれないが、実際には大胆な変更ということがいえる。 This technology was obtained from consideration of the characteristics of various devices shown in Fig. 2 and the actual state of usage. The change from Fig. 1 to Fig. 2 may seem slight, but it is actually bold. It can be said that it is a change.

本明細書が開示する技術の詳細とさらなる改良は以下の「発明を実施するための形態」にて説明する。 Details and further improvements to the techniques disclosed herein will be described in the "Modes for Carrying Out the Invention" section below.

従来の電源装置の構成を示す図である。It is a figure which shows the structure of the conventional power supply device. 今回の電源装置の構成を示す図である。It is a figure which shows the structure of the power supply device this time. 実施例の電源装置の構成を示す図である。It is a figure which shows the structure of the power supply device of an Example.

図３に示すように、実施例の電動自動車用の電源装置は、直流端子６を車載している。サービスエリア等の車外に、充電機能を備えていて充電電流を供給する設備２が設置されている。直流端子６は、充電機能を備えていているインフラ設備２側の端子４に接続することができる。直流端子６は、メインリレー８を介して電池１０に接続されている。メインリレー８は、電池１０の充電中はオンしている。直流端子６を端子４に接続すると、インフラ設備２が電池１０を充電する。インフラ設備２は大電流を供給できることから、電池１０は急速充電される。 As shown in FIG. 3, the power supply device for the electric vehicle of the embodiment has a DC terminal 6 mounted on the vehicle. A facility 2 having a charging function and supplying a charging current is installed outside the vehicle such as a service area. The DC terminal 6 can be connected to the terminal 4 on the side of the infrastructure equipment 2 having a charging function. The DC terminal 6 is connected to the battery 10 via the main relay 8. The main relay 8 is on while the battery 10 is being charged. When the DC terminal 6 is connected to the terminal 4, the infrastructure equipment 2 charges the battery 10. Since the infrastructure equipment 2 can supply a large current, the battery 10 is quickly charged.

実施例の電源装置は、家庭に設置されている商用交流電源２２から延びている端子２４に接続する交流端子２６を備えている。交流端子２６は、交流を直流に変換する回路３０に接続されている。変換回路３０は、４個のダイオードで構成されている整流ブリッジ３２によって交流を直流に整流し、リアクトル３４とスイッチング素子３６等によって構成される昇圧回路によって昇圧し、スイッチング素子４２、４４、４６、４８等をスイッチングしてトランス５２の一次コイル５０に流れる電流を時間に対して変化させる。これによってトランス５２の二次コイル５４に電圧が生じる。二次コイル５４に生じた電圧は、一対のダイオード５６、５８によって直流に変換される。変換回路３０は、交流を直流に変換し、変換された直流を出力する。変換回路３０のスイッチング素子３６等は、図示しない充電電流制御回路によってオンオフが制御され、電池１０の充電に適した電圧の直流（充電電流）を供給する。電池１０の充電が完了すれば充電電流の供給を停止する。昇圧回路を備えることによって、電圧の異なる交流電源からでも電池１０を充電することができる。 The power supply device of the embodiment includes an AC terminal 26 connected to a terminal 24 extending from a commercial AC power supply 22 installed in a home. The AC terminal 26 is connected to a circuit 30 that converts alternating current into direct current. The conversion circuit 30 rectifies alternating current to direct current by a rectifying bridge 32 composed of four diodes, boosts it by a boosting circuit composed of a reactor 34, a switching element 36, and the like, and switches elements 42, 44, 46, The current flowing through the primary coil 50 of the transformer 52 is changed with time by switching 48 and the like. As a result, a voltage is generated in the secondary coil 54 of the transformer 52. The voltage generated in the secondary coil 54 is converted to direct current by the pair of diodes 56 and 58. The conversion circuit 30 converts alternating current into direct current and outputs the converted direct current. The switching element 36 and the like of the conversion circuit 30 are controlled on and off by a charging current control circuit (not shown), and supplies a direct current (charging current) having a voltage suitable for charging the battery 10. When the charging of the battery 10 is completed, the supply of the charging current is stopped. By providing the booster circuit, the battery 10 can be charged even from AC power sources having different voltages.

平滑回路６０は、コイル６２とコンデンサ６４の組と、コイル６６とコンデンサ６８の組が２段に接続されており、変換回路３０が出力した直流を平滑化して電池１０に供給する。コイルとコンデンサの組み合わせを備えていることから、ノイズ除去フィルタとして動作する。 In the smoothing circuit 60, a pair of a coil 62 and a capacitor 64 and a pair of a coil 66 and a capacitor 68 are connected in two stages, and the direct current output by the conversion circuit 30 is smoothed and supplied to the battery 10. Since it has a combination of a coil and a capacitor, it operates as a noise reduction filter.

走行モータを駆動する電池１０の電圧が数百ボルトであるのに対し、ナビゲーション装置といった補機８０の駆動電流は十数ボルトであることから、両者間の電力交換を可能とするためにＤＣ／ＤＣコンバータ７０が用意されている。ＤＣ／ＤＣコンバータ７０の低圧側出力線に対して補機８０と補機用電池８２が並列に接続されている。電池１０側からＤＣ／ＤＣコンバータ７０を介して補機用電池８２を充電することが可能であり、充電中の補機用電池８２は補機８０の一種ということができる。 Since the voltage of the battery 10 that drives the traction motor is several hundred volts, while the drive current of the auxiliary device 80 such as the navigation device is ten and several volts, DC / is used to enable power exchange between the two. A DC converter 70 is prepared. The auxiliary machine 80 and the auxiliary machine battery 82 are connected in parallel to the low-voltage side output line of the DC / DC converter 70. It is possible to charge the auxiliary battery 82 from the battery 10 side via the DC / DC converter 70, and the auxiliary battery 82 being charged can be said to be a kind of auxiliary machine 80.

ＤＣ／ＤＣコンバータ７０の高圧側の配線は、変換回路３０と平滑回路６０を接続する配線に接続されている。 The wiring on the high voltage side of the DC / DC converter 70 is connected to the wiring connecting the conversion circuit 30 and the smoothing circuit 60.

図３の構成の場合、ＤＣ／ＤＣコンバータ７０の動作に伴って発生するノイズは、平滑回路６０を介して充電電流供給設備２に伝搬する。平滑回路６０は、コイル６２、６６やコンデンサ６４、６８といった電子部品で構成されており、ノイズ除去フィルタとして動作する。図３の電源装置によると、平滑回路６０によってノイズが除去されてから充電電流供給設備２に伝搬することから、充電電流供給設備２に悪影響を及ぼさないようにできる。またノイズ除去フィルタを兼用する平滑回路６０は、もともと必要な部品であり、新たな部品を必要としない。 In the case of the configuration of FIG. 3, the noise generated by the operation of the DC / DC converter 70 propagates to the charging current supply facility 2 via the smoothing circuit 60. The smoothing circuit 60 is composed of electronic components such as coils 62 and 66 and capacitors 64 and 68, and operates as a noise removal filter. According to the power supply device of FIG. 3, since noise is removed by the smoothing circuit 60 and then propagated to the charging current supply facility 2, it is possible to prevent the charging current supply facility 2 from being adversely affected. Further, the smoothing circuit 60 that also serves as a noise reduction filter is originally a necessary component and does not require a new component.

図３の構成の場合、交流電源２２を利用して充電している間にＤＣ／ＤＣコンバータ７０が動作すると、平滑化前の直流電流がＤＣ／ＤＣコンバータ７０に入力されることになる。またＤＣ／ＤＣコンバータ７０の動作に伴って発生するノイズが変換回路３０を介して車外の交流電源２２に伝搬することになる。しかしながら、直流端子６を利用する急速充電中は補機８０が使用される機会が多いのに対し、交流端子２６を利用する普通充電中は補機８０を使用する機会が少ないことから、上記が問題となることが少ない。またＤＣ／ＤＣコンバータ７０にはノイズに対する耐性が高い部品が使われていることから、普通充電中に補機８０が動作するようなことがあっても問題となることはない。車載の部品には、もともと、地上の設備に比べてノイズに対する耐性の高い部品が使われる。また変換回路３０はトランス５２を用いて電圧変換する絶縁型である。変換回路３０は、トランス５２によってノイズ減衰効果が得られる。普通充電中に補機８０が動作するようなことがあっても車外の交流電源２２に悪影響を及ぼすことはない。 In the case of the configuration of FIG. 3, if the DC / DC converter 70 operates while charging using the AC power supply 22, the DC current before smoothing is input to the DC / DC converter 70. Further, the noise generated by the operation of the DC / DC converter 70 propagates to the AC power supply 22 outside the vehicle via the conversion circuit 30. However, while the auxiliary machine 80 is often used during quick charging using the DC terminal 6, the auxiliary machine 80 is rarely used during normal charging using the AC terminal 26. It is less likely to be a problem. Further, since the DC / DC converter 70 uses components having high resistance to noise, there is no problem even if the auxiliary machine 80 operates during normal charging. Originally, in-vehicle parts are more resistant to noise than ground equipment. The conversion circuit 30 is an isolated type that converts voltage using a transformer 52. In the conversion circuit 30, a noise attenuation effect is obtained by the transformer 52. Even if the auxiliary machine 80 operates during normal charging, it does not adversely affect the AC power supply 22 outside the vehicle.

車載時には、交流／直流変換回路３０と、平滑回路６０と、ＤＣ／ＤＣコンバータ７０を一つの筐体内に収容することが好ましい。３者を一体化することによって、空間効率が向上し、ノイズ対策が容易化される。 When mounted on a vehicle, it is preferable to house the AC / DC conversion circuit 30, the smoothing circuit 60, and the DC / DC converter 70 in one housing. By integrating the three, space efficiency is improved and noise countermeasures are facilitated.

以上、本発明の具体例を詳細に説明したが、これらは例示に過ぎず、特許請求の範囲を限定するものではない。特許請求の範囲に記載の技術には、以上に例示した具体例を様々に変形、変更したものが含まれる。本明細書または図面に説明した技術要素は、単独であるいは各種の組合せによって技術的有用性を発揮するものであり、出願時請求項記載の組合せに限定されるものではない。また、本明細書または図面に例示した技術は複数目的を同時に達成し得るものであり、そのうちの一つの目的を達成すること自体で技術的有用性を持つものである。 Although specific examples of the present invention have been described in detail above, these are merely examples and do not limit the scope of claims. The techniques described in the claims include various modifications and modifications of the specific examples illustrated above. The technical elements described in the present specification or drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the techniques illustrated in the present specification or drawings can achieve a plurality of purposes at the same time, and achieving one of the purposes itself has technical usefulness.

２：充電機能を備えている車外設備：充電電流供給設備：充電機能を備えているインフラ設備
４：設備側端子
６：車載の直流端子
１０：電池
２２：車外の交流電源
２４：電源側端子
２６：車載の交流端子
３０：交流／直流変換回路
６０：平滑回路
７０：ＤＣ／ＤＣコンバータ
８０：補機 2: Vehicle exterior equipment with charging function: Charging current supply equipment: Infrastructure equipment with charging function
4: Equipment side terminal 6: In-vehicle DC terminal 10: Battery 22: External AC power supply 24: Power supply side terminal 26: In-vehicle AC terminal 30: AC / DC conversion circuit 60: Smoothing circuit 70: DC / DC converter 80: Auxiliary machine

Claims (1)

電動自動車の電源装置であり、
直流端子と、
交流端子と、
交流を直流に変換する変換回路と、
変換された直流を平滑化する平滑回路と、
電池と、
ＤＣ／ＤＣコンバータと、
補機と、
を備えており、
前記直流端子は、前記電池に接続されており、充電機能を備えている車外設備に接続するとその設備が供給する充電電流を前記電池に供給し、
前記交流端子は、前記変換回路と前記平滑回路を介して前記電池に接続されており、車外に設けられている交流電源に接続すると、前記変換回路と前記平滑回路によって得られた充電電流を前記電池に供給し、
前記ＤＣ／ＤＣコンバータの高圧側配線が前記変換回路と前記平滑回路を接続する配線に接続されており、低圧側配線が前記補機に接続されている、
ことを特徴とする電源装置。 It is a power supply for electric vehicles.
DC terminal and
AC terminal and
A conversion circuit that converts alternating current to direct current,
A smoothing circuit that smoothes the converted direct current,
Batteries and
DC / DC converter and
Auxiliary equipment and
Is equipped with
The DC terminal is connected to the battery, and when connected to an external equipment having a charging function, the charging current supplied by the equipment is supplied to the battery.
The AC terminal is connected to the battery via the conversion circuit and the smoothing circuit, and when connected to an AC power supply provided outside the vehicle, the charging current obtained by the conversion circuit and the smoothing circuit is transferred. Supply to the battery
The high-voltage side wiring of the DC / DC converter is connected to the wiring connecting the conversion circuit and the smoothing circuit, and the low-voltage side wiring is connected to the auxiliary machine.
A power supply that is characterized by that.
JP2019035748A 2019-02-28 2019-02-28 Power supply device for electric vehicle Ceased JP2020141494A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023040541A1 (en) * 2021-09-14 2023-03-23 华为数字能源技术有限公司 Charging/discharging device and vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013085394A (en) * 2011-10-11 2013-05-09 Toyota Motor Corp Electric vehicle
JP2013247750A (en) * 2012-05-25 2013-12-09 Honda Motor Co Ltd Power control unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013085394A (en) * 2011-10-11 2013-05-09 Toyota Motor Corp Electric vehicle
JP2013247750A (en) * 2012-05-25 2013-12-09 Honda Motor Co Ltd Power control unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023040541A1 (en) * 2021-09-14 2023-03-23 华为数字能源技术有限公司 Charging/discharging device and vehicle

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