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WO2019012835A1 - Power supply device - Google Patents

Power supply device Download PDF

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Publication number
WO2019012835A1
WO2019012835A1 PCT/JP2018/020691 JP2018020691W WO2019012835A1 WO 2019012835 A1 WO2019012835 A1 WO 2019012835A1 JP 2018020691 W JP2018020691 W JP 2018020691W WO 2019012835 A1 WO2019012835 A1 WO 2019012835A1
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WO
WIPO (PCT)
Prior art keywords
power supply
space
supply device
switching circuit
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/020691
Other languages
French (fr)
Japanese (ja)
Inventor
純司 湊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to CN201890000880.4U priority Critical patent/CN211151828U/en
Publication of WO2019012835A1 publication Critical patent/WO2019012835A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • 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
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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
    • 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
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • 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

Definitions

  • the present disclosure relates to a power supply device mounted on a vehicle.
  • a charger In such a power supply device mounted on an electric vehicle or the like, a charger, a DC / DC converter, an inverter, and the like are provided.
  • the voltage of the power supplied from the external power supply is converted to the battery voltage by the charger, and the power having the converted voltage is charged to the battery. Then, the charged power is supplied to a DC / DC converter, an inverter, and the like.
  • the charger, the DC / DC converter, and the inverter are provided with switching elements, but high frequency noise (hereinafter referred to as noise) is generated on the circuit board or wiring on which these circuits are disposed due to the switching elements. . Such noise may affect other circuits through the circuit board and the wiring.
  • the noise superimposed on the high-power wiring affects the low-power wiring by separating and arranging the high-power wiring through which the high-voltage signal flows and the low-power wiring through which the low-voltage signal flows.
  • a low voltage (for example, 48 V) rated battery may be used as a driving battery.
  • a low voltage battery it is not necessary to insulate the DC / DC converter, the inverter, etc., which are supplied with power from the low voltage battery, with respect to the vehicle body. That is, the outside of the device is not isolated. Therefore, even if noise is generated in the DC / DC converter or the inverter, it is possible to reduce the common mode current flowing to the vehicle body or the casing, and thus the above problem hardly occurs.
  • the charger is isolated from the outside because the charger is supplied with a voltage corresponding to the external power supply, that is, a relatively high voltage. Therefore, when noise is generated in the charger, the common mode current flowing to the vehicle body or the casing is increased, and the other circuits may be affected by the noise.
  • control circuit for controlling the charger may be affected by noise generated by the charger.
  • noise reduction of the entire power supply device has a certain limit.
  • the present disclosure provides a power supply capable of reducing the influence of noise generated in a switching circuit (for example, a charger) that requires isolation.
  • a power supply device includes a first switching circuit, a second switching circuit, and a control circuit.
  • the first switching circuit is stored in the first space and isolated from the outside.
  • the second switching circuit is stored in a second space different from the first space and is not isolated from the outside.
  • the control circuit is stored in the second space and controls the first switching circuit.
  • FIG. 1 is a block diagram showing a power supply device according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram showing the structure of the power supply device according to the embodiment of the present disclosure.
  • FIG. 1 is a block diagram showing a power supply device 100 according to the present embodiment.
  • the power supply device 100 is mounted on a vehicle such as an electric vehicle, charges the battery 20 by the power supplied from the external power supply 10, and supplies the motor 30 and the load 40 with the power from the battery 20.
  • the battery 20 is a low voltage (for example, 48 V) rated battery that does not require insulation with respect to the vehicle body.
  • the power supply device 100 includes a charger 110, a first control unit 120, a power conversion unit (hereinafter, first conversion unit) 130, a second control unit 140, and a load DC / DC conversion unit (hereinafter, second conversion unit) 150. And a third control unit 160.
  • the charger 110, the first control unit 120, the first conversion unit 130, the second control unit 140, the second conversion unit 150, and the third control unit 160 are connected to the vehicle body of the vehicle on which the power supply device 100 is mounted. Is stored in the housing 200.
  • the charger 110 as a first switching circuit converts power of a first voltage (for example, 100 V) supplied from the external power supply 10 which is an AC power supply into a second voltage (for example, 48 V) smaller than the first voltage. . Then, the power after voltage conversion is supplied to the battery 20.
  • the charger 110 includes a rectification unit 111, a power factor correction unit 112, and a charging DC / DC conversion unit (hereinafter, a third conversion unit) 113.
  • the rectifying unit 111 full-wave rectifies AC power (first voltage) received from the external power supply 10 to convert it into DC power, and outputs the DC power to the power factor correction unit 112.
  • the power factor improvement unit 112 has a function of improving the power factor of the power input from the rectification unit 111.
  • the power factor correction unit 112 has a switching element 112A.
  • the third conversion unit 113 is a circuit that converts the output from the power factor correction unit 112 into a second voltage that can charge the battery 20, and includes switching elements 113A, 113B, 113C, 113D, and the like.
  • the third conversion unit 113 is an insulation type DC / DC conversion unit, and a high voltage region (DC 60 V or more) that requires insulation by a transformer (not shown) and a low voltage region (DC 60 V not required) ) And divided.
  • the first control unit 120 as a control circuit controls the operation of the charger 110 by on / off controlling the switching element 112A of the power factor correction unit 112 and the switching elements 113A, 113B, 113C, 113D of the third conversion unit 113. Do. That is, under the control of the first control unit 120, the power supplied from the external power supply 10 is charged to the battery 20 via the charger 110.
  • the first conversion unit 130 as a second switching circuit is a power conversion circuit that converts DC power (second voltage) supplied from the battery 20 into AC power.
  • the first conversion unit 130 is a three-phase bridge inverter circuit that outputs the converted AC power to the motor 30, and has a switching element (not shown). Three-phase AC power is output to the motor 30 by turning on and off the switching elements of the first conversion unit 130 under the control of the second control unit 140.
  • the second converter 150 as a second switching circuit together with the first converter 130 converts the voltage (second voltage) of the power supplied from the battery 20 into a voltage that can be supplied to the load 40.
  • the second conversion unit 150 has a switching element or the like (not shown). By turning on and off the switching elements of the second conversion unit 150 under the control of the third control unit 160, the power supplied from the battery 20 is output to the load 40 via the second conversion unit 150.
  • first control unit 120, the second control unit 140 and the third control unit 160 can communicate with the vehicle control device 50 through the connector 210 provided in the housing 200, and the vehicle control device The respective units of the power supply apparatus 100 are controlled by the control of 50.
  • first control unit 120, the second control unit 140, and the third control unit 160 operate at a low voltage, insulation with respect to the vehicle body is unnecessary.
  • the first conversion unit 130 and the second conversion unit 150 are supplied with the second voltage, which is a relatively low voltage, by the charger 110 or the like. And electrically connected, that is, uninsulated from the outside. Therefore, even if noise is generated in the first conversion unit 130 and the second conversion unit 150, the loop of the common mode current can be reduced, so the above problem is less likely to occur.
  • the charger 110 is supplied with power corresponding to the external power supply 10, that is, power having a relatively high voltage (first voltage). Therefore, it is necessary to electrically insulate the casing 200, and hence the vehicle body, that is, to the outside. As a result, when noise occurs in the charger 110, the loop of the common mode current becomes large, and the amount of noise generation becomes large.
  • noise may be transmitted to the first conversion unit 130 and the second conversion unit 150, and the first conversion unit 130 and the second conversion unit 150 may be affected by the noise.
  • charger 110 insulated from the outside of power supply apparatus 100 and first conversion unit 130 not insulated from the outside of power supply apparatus 100.
  • the second conversion unit 150 are provided in the housing 200 so as to be disposed in different spaces.
  • the housing 200 is formed with a first space 201 in which the charger 110 is disposed, and a second space 202 in which the first conversion unit 130 and the second conversion unit 150 are disposed.
  • the shield part 220 is located between the first space 201 and the second space 202.
  • the shield part 220 is a wall that divides the first space 201 and the second space 202, and has a function of blocking noise generated in any one of the first space 201 and the second space 202. That is, the first space 201 and the second space 202 are separated by the shield portion 220, so that the noise generated in the charger 110 is cut off. As a result, transmission of noise to the first conversion unit 130 and the second conversion unit 150 can be suppressed. As a result, transmission of noise to the entire power supply apparatus 100 can be suppressed.
  • the charger 110 is controlled by the first control unit 120, when noise is generated in the charger 110, the first control unit 120 may be affected by the noise. Therefore, the entire power supply apparatus 100 may be affected by this noise via the first control unit 120.
  • the first control unit 120 is stored in the second space 202.
  • the first control unit 120 is located in the same space as the first conversion unit 130 and the second conversion unit 150 which are not insulated from the outside of the power supply apparatus 100.
  • the first control unit 120 is located in a space different from the charger 110. Therefore, the noise generated in the charger 110 is less likely to be transmitted to the first control unit 120, and therefore the influence of the noise on the first control unit 120 can be reduced.
  • the first control unit 120 is located in the same space as the first conversion unit 130 and the second conversion unit 150 which are not insulated from the outside of the power supply apparatus 100.
  • the first control unit 120 performs the first conversion unit 130 and the second conversion unit.
  • the influence of noise received from the conversion unit 150 is small.
  • the charger 110 is used when the vehicle is stopped, and the first conversion unit 130, which is an inverter, is used when the vehicle travels. That is, since the charger 110 and the first conversion unit 130 perform the exclusive operation, the influence of the noise that the first control unit 120 receives from the first conversion unit 130 is extremely small.
  • a hole (not shown) is formed in the shield portion 220, and the wire 101 connecting the charger 110 and the first control portion 120 is inserted.
  • the wiring 101 is provided with, for example, an LCR filter 170 for reducing noise. As a result, transmission of noise from the charger 110 to the first control unit 120 via the wiring 101 can be further reduced.
  • noise shielding be applied to the wiring 101 located at least in the first space 201. Thereby, the noise from the charger 110 can be prevented from being superimposed on the wiring 101.
  • the first control unit 120 When the first control unit 120 is mounted in the first space 201, the first control unit 120 itself needs a noise shield, which results in high cost.
  • the connector 210 is provided on a wall forming the second space 202 in the housing 200. For this reason, it can suppress that the signal wire
  • FIG. 1
  • the radiation fin 221 is provided in the shield portion 220.
  • a plurality of radiation fins 221 are provided side by side in the left-right direction in FIG.
  • the charger 110 is disposed at a position close to the shield portion 220 in the first space 201.
  • the first conversion unit 130 and the second conversion unit 150 are disposed at a position close to the shield unit 220 in the second space 202.
  • the heat generated by the battery charger 110, the first conversion unit 130, and the second conversion unit 150 which generate a relatively large amount of heat, can be dissipated to the outside of the power supply apparatus 100 through the heat dissipation fins 221.
  • the power supply device 100 in the said embodiment was comprised by one housing
  • the power supply device 100 may be configured of a first housing having the first space 201 and a second housing having the second space 202.
  • the shield part 220 has the radiation fin 221 capable of radiating heat to both the charger 110 and the first conversion part 130 and the second conversion part 150, but the present invention is not limited to this configuration.
  • the radiation fin 221 provided in the shield portion 220 may be configured to be capable of radiating heat to any one of the charger 110 and the first conversion portion 130 and the second conversion portion 150.
  • the radiation fin 221 may not be provided.
  • any of the above-described embodiments is merely an example of embodying the present disclosure, and the technical scope of the present disclosure should not be interpreted in a limited manner by these. That is, the present disclosure can be implemented in various forms without departing from the scope or main features of the present disclosure.
  • the power supply device of the present disclosure is useful as a power supply device capable of reducing the influence of noise generated in a switching circuit (for example, a charger) that requires isolation.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)
  • Secondary Cells (AREA)

Abstract

電源装置は、第１スイッチング回路と、第２スイッチング回路と、制御回路とを有する。第１スイッチング回路は、第１空間に格納され、外部に対して絶縁されている。第２スイッチング回路は、第１空間とは異なる第２空間に格納され、外部に対して絶縁されていない。制御回路は、第２空間に格納され、第１スイッチング回路を制御する。The power supply device includes a first switching circuit, a second switching circuit, and a control circuit. The first switching circuit is stored in the first space and isolated from the outside. The second switching circuit is stored in a second space different from the first space and is not isolated from the outside. The control circuit is stored in the second space and controls the first switching circuit.

Description

電源装置Power supply

　本開示は、車両に搭載される電源装置に関する。 The present disclosure relates to a power supply device mounted on a vehicle.

　従来、電気自動車等に搭載される電源装置においては、充電器や、ＤＣ／ＤＣコンバータ、及び、インバータ等が設けられている。このような電源装置では、外部電源から供給される電力の電圧を、充電器でバッテリー電圧に変換させ、変換後の電圧を有する電力がバッテリーに充電される。そして、充電された電力がＤＣ／ＤＣコンバータやインバータ等に供給される。 Conventionally, in a power supply device mounted on an electric vehicle or the like, a charger, a DC / DC converter, an inverter, and the like are provided. In such a power supply device, the voltage of the power supplied from the external power supply is converted to the battery voltage by the charger, and the power having the converted voltage is charged to the battery. Then, the charged power is supplied to a DC / DC converter, an inverter, and the like.

　充電器、ＤＣ／ＤＣコンバータ、及び、インバータにはスイッチング素子が設けられるが、これらの回路が配置される回路基板や配線には、スイッチング素子に起因して高周波ノイズ（以下、ノイズ）が発生する。このようなノイズは、回路基板や配線を通じて、他の回路に影響する可能性がある。 The charger, the DC / DC converter, and the inverter are provided with switching elements, but high frequency noise (hereinafter referred to as noise) is generated on the circuit board or wiring on which these circuits are disposed due to the switching elements. . Such noise may affect other circuits through the circuit board and the wiring.

　特許文献１に記載の技術では、高電圧の信号が流通する強電配線と、低電圧の信号が流通する弱電配線とを隔離して配置することにより、強電配線に重畳するノイズが弱電配線に影響することを抑制している。 In the technology described in Patent Document 1, the noise superimposed on the high-power wiring affects the low-power wiring by separating and arranging the high-power wiring through which the high-voltage signal flows and the low-power wiring through which the low-voltage signal flows. To suppress

特開２０１６－２２０３４４号公報JP, 2016-220344, A

　小型の電気自動車の場合、駆動用バッテリーとして、低電圧（例えば、４８Ｖ）定格バッテリーを用いる場合がある。このような低電圧バッテリーを用いる場合、低電圧バッテリーから電力供給されるＤＣ／ＤＣコンバータやインバータ等は、車体に対して絶縁しなくてもよい。つまり、装置外部に対して非絶縁状態とされる。そのため、ＤＣ／ＤＣコンバータやインバータにおいてノイズが発生しても、車体や筐体に流れるコモンモード電流を小さくすることが可能であるため、上記問題は生じにくい。 In the case of a small electric vehicle, a low voltage (for example, 48 V) rated battery may be used as a driving battery. When such a low voltage battery is used, it is not necessary to insulate the DC / DC converter, the inverter, etc., which are supplied with power from the low voltage battery, with respect to the vehicle body. That is, the outside of the device is not isolated. Therefore, even if noise is generated in the DC / DC converter or the inverter, it is possible to reduce the common mode current flowing to the vehicle body or the casing, and thus the above problem hardly occurs.

　それに対し、充電器は、外部電源に対応した電圧、つまり、比較的高電圧となる電力が供給されるため、外部に対して絶縁される。そのため、充電器内でノイズが発生した場合、車体や筐体に流れるコモンモード電流が大きくなるため、他の回路がノイズの影響を受けてしまうおそれがある。 On the other hand, the charger is isolated from the outside because the charger is supplied with a voltage corresponding to the external power supply, that is, a relatively high voltage. Therefore, when noise is generated in the charger, the common mode current flowing to the vehicle body or the casing is increased, and the other circuits may be affected by the noise.

　このような場合において、充電器を制御するための制御回路が、充電器で発生するノイズの影響を受けてしまうおそれがある。特許文献１に記載の構成では、充電器における制御回路について考慮されていないので、電源装置全体のノイズ低減にはある程度の限界がある。 In such a case, the control circuit for controlling the charger may be affected by noise generated by the charger. In the configuration described in Patent Document 1, since the control circuit in the charger is not considered, noise reduction of the entire power supply device has a certain limit.

　本開示は、絶縁が必要なスイッチング回路（例えば、充電器）で発生するノイズの影響を低減することが可能な電源装置を提供する。 The present disclosure provides a power supply capable of reducing the influence of noise generated in a switching circuit (for example, a charger) that requires isolation.

　本開示に係る電源装置は、第１スイッチング回路と、第２スイッチング回路と、制御回路とを有する。第１スイッチング回路は、第１空間に格納され、外部に対して絶縁されている。第２スイッチング回路は、第１空間とは異なる第２空間に格納され、外部に対して絶縁されていない。制御回路は、第２空間に格納され、第１スイッチング回路を制御する。 A power supply device according to the present disclosure includes a first switching circuit, a second switching circuit, and a control circuit. The first switching circuit is stored in the first space and isolated from the outside. The second switching circuit is stored in a second space different from the first space and is not isolated from the outside. The control circuit is stored in the second space and controls the first switching circuit.

　本開示によれば、絶縁が必要なスイッチング回路（例えば、充電器）で発生するノイズの影響を低減することができる。 According to the present disclosure, it is possible to reduce the influence of noise generated in a switching circuit (for example, a charger) that requires isolation.

図１は、本開示の実施の形態に係る電源装置を示すブロック図である。FIG. 1 is a block diagram showing a power supply device according to an embodiment of the present disclosure. 図２は、本開示の実施の形態に係る電源装置の構造を示す図である。FIG. 2 is a diagram showing the structure of the power supply device according to the embodiment of the present disclosure.

　以下、図面を参照しながら、本開示の実施の形態を詳細に説明する。図１は、本実施の形態に係る電源装置１００を示すブロック図である。 Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a power supply device 100 according to the present embodiment.

　電源装置１００は、電気自動車等の車両に搭載され、外部電源１０から供給される電力によりバッテリー２０を充電し、また、バッテリー２０からの電力をモーター３０や負荷４０に供給する。なお、バッテリー２０は、車体に対する絶縁が不要な、低電圧（例えば、４８Ｖ）定格バッテリーである。 The power supply device 100 is mounted on a vehicle such as an electric vehicle, charges the battery 20 by the power supplied from the external power supply 10, and supplies the motor 30 and the load 40 with the power from the battery 20. The battery 20 is a low voltage (for example, 48 V) rated battery that does not require insulation with respect to the vehicle body.

　電源装置１００は、充電器１１０、第１制御部１２０、電力変換部（以下、第１変換部）１３０、第２制御部１４０、負荷用ＤＣ／ＤＣ変換部（以下、第２変換部）１５０、及び、第３制御部１６０を有する。 The power supply device 100 includes a charger 110, a first control unit 120, a power conversion unit (hereinafter, first conversion unit) 130, a second control unit 140, and a load DC / DC conversion unit (hereinafter, second conversion unit) 150. And a third control unit 160.

　充電器１１０、第１制御部１２０、第１変換部１３０、第２制御部１４０、第２変換部１５０、及び、第３制御部１６０は、電源装置１００が搭載される車両の車体に接続される筐体２００に格納される。 The charger 110, the first control unit 120, the first conversion unit 130, the second control unit 140, the second conversion unit 150, and the third control unit 160 are connected to the vehicle body of the vehicle on which the power supply device 100 is mounted. Is stored in the housing 200.

　第１スイッチング回路としての充電器１１０は、交流電源である外部電源１０から供給される第１電圧（例えば、１００Ｖ）の電力を、第１電圧より小さい第２電圧（例えば、４８Ｖ）に変換する。そして、電圧変換後の電力をバッテリー２０に供給する。充電器１１０は、整流部１１１と、力率改善部１１２と、充電用ＤＣ／ＤＣ変換部（以下、第３変換部）１１３とを有する。 The charger 110 as a first switching circuit converts power of a first voltage (for example, 100 V) supplied from the external power supply 10 which is an AC power supply into a second voltage (for example, 48 V) smaller than the first voltage. . Then, the power after voltage conversion is supplied to the battery 20. The charger 110 includes a rectification unit 111, a power factor correction unit 112, and a charging DC / DC conversion unit (hereinafter, a third conversion unit) 113.

　整流部１１１は、外部電源１０から受電した交流電力（第１電圧）を全波整流して直流電力に変換し、力率改善部１１２に出力する。 The rectifying unit 111 full-wave rectifies AC power (first voltage) received from the external power supply 10 to convert it into DC power, and outputs the DC power to the power factor correction unit 112.

　力率改善部１１２は、整流部１１１から入力された電力の力率を改善する機能を有する。力率改善部１１２は、スイッチング素子１１２Ａを有する。 The power factor improvement unit 112 has a function of improving the power factor of the power input from the rectification unit 111. The power factor correction unit 112 has a switching element 112A.

　第３変換部１１３は、力率改善部１１２からの出力をバッテリー２０に充電可能な第２電圧に変換する回路であり、スイッチング素子１１３Ａ、１１３Ｂ、１１３Ｃ、１１３Ｄ等を有する。第３変換部１１３は、絶縁型のＤＣ／ＤＣ変換部であり、トランス（不図示）により、絶縁が必要な高電圧領域（直流６０Ｖ以上）と、絶縁が不要な低電圧領域（直流６０Ｖ未満）とに分かれている。 The third conversion unit 113 is a circuit that converts the output from the power factor correction unit 112 into a second voltage that can charge the battery 20, and includes switching elements 113A, 113B, 113C, 113D, and the like. The third conversion unit 113 is an insulation type DC / DC conversion unit, and a high voltage region (DC 60 V or more) that requires insulation by a transformer (not shown) and a low voltage region (DC 60 V not required) ) And divided.

　制御回路としての第１制御部１２０は、力率改善部１１２のスイッチング素子１１２Ａや第３変換部１１３のスイッチング素子１１３Ａ、１１３Ｂ、１１３Ｃ、１１３Ｄをオンオフ制御することで、充電器１１０の動作を制御する。つまり、第１制御部１２０の制御の下、外部電源１０から供給される電力が、充電器１１０を介してバッテリー２０に充電される。 The first control unit 120 as a control circuit controls the operation of the charger 110 by on / off controlling the switching element 112A of the power factor correction unit 112 and the switching elements 113A, 113B, 113C, 113D of the third conversion unit 113. Do. That is, under the control of the first control unit 120, the power supplied from the external power supply 10 is charged to the battery 20 via the charger 110.

　第２スイッチング回路としての第１変換部１３０は、バッテリー２０から供給された直流電力（第２電圧）を交流電力に変換する電力変換回路である。具体的には、第１変換部１３０は、変換した交流電力をモーター３０に出力する三相ブリッジインバータ回路であり、図示しないスイッチング素子を有する。第２制御部１４０の制御により、第１変換部１３０のスイッチング素子をオンオフ動作させることで、三相交流電力がモーター３０に出力される。 The first conversion unit 130 as a second switching circuit is a power conversion circuit that converts DC power (second voltage) supplied from the battery 20 into AC power. Specifically, the first conversion unit 130 is a three-phase bridge inverter circuit that outputs the converted AC power to the motor 30, and has a switching element (not shown). Three-phase AC power is output to the motor 30 by turning on and off the switching elements of the first conversion unit 130 under the control of the second control unit 140.

　第１変換部１３０とともに第２スイッチング回路としての第２変換部１５０は、バッテリー２０から供給される電力の電圧（第２電圧）を負荷４０に供給可能な電圧に変換する。第２変換部１５０は、図示しないスイッチング素子等を有する。第３制御部１６０の制御により、第２変換部１５０のスイッチング素子をオンオフ動作させることで、バッテリー２０から供給される電力が第２変換部１５０を介して負荷４０に出力される。 The second converter 150 as a second switching circuit together with the first converter 130 converts the voltage (second voltage) of the power supplied from the battery 20 into a voltage that can be supplied to the load 40. The second conversion unit 150 has a switching element or the like (not shown). By turning on and off the switching elements of the second conversion unit 150 under the control of the third control unit 160, the power supplied from the battery 20 is output to the load 40 via the second conversion unit 150.

　また、第１制御部１２０、第２制御部１４０および第３制御部１６０は、筐体２００に設けられたコネクタ２１０を介して車両用制御装置５０と通信可能となっており、車両用制御装置５０の制御により、電源装置１００の各部を制御する。なお、第１制御部１２０、第２制御部１４０および第３制御部１６０は、低電圧で動作するため、車体に対する絶縁は不要である。 Further, the first control unit 120, the second control unit 140 and the third control unit 160 can communicate with the vehicle control device 50 through the connector 210 provided in the housing 200, and the vehicle control device The respective units of the power supply apparatus 100 are controlled by the control of 50. In addition, since the first control unit 120, the second control unit 140, and the third control unit 160 operate at a low voltage, insulation with respect to the vehicle body is unnecessary.

　ところで、このような電源装置１００に用いられる回路には、スイッチング素子が設けられることから、回路基板や配線に高周波ノイズが発生し、この高周波ノイズが他の回路ブロックに影響する可能性がある。 By the way, since a circuit used in such a power supply apparatus 100 is provided with a switching element, high frequency noise may be generated in a circuit board or wiring, and this high frequency noise may affect other circuit blocks.

　第１変換部１３０および第２変換部１５０には、充電器１１０等により、比較的低電圧である第２電圧が供給されるので、筐体２００を介して、電源装置１００の外部である車体と電気的に接続された状態、つまり、外部に対して非絶縁状態とされる。そのため、第１変換部１３０および第２変換部１５０においてノイズが発生しても、コモンモード電流のループを小さくできるため、上記問題は生じにくい。 The first conversion unit 130 and the second conversion unit 150 are supplied with the second voltage, which is a relatively low voltage, by the charger 110 or the like. And electrically connected, that is, uninsulated from the outside. Therefore, even if noise is generated in the first conversion unit 130 and the second conversion unit 150, the loop of the common mode current can be reduced, so the above problem is less likely to occur.

　それに対し、充電器１１０は、外部電源１０に対応した電力、つまり、比較的高電圧（第１電圧）となる電力が供給される。そのため、筐体２００、ひいては、車体と電気的に絶縁された状態、つまり、外部に対して絶縁される必要がある。これにより、充電器１１０内でノイズが発生した場合、コモンモード電流のループが大きくなるため、ノイズの発生量が大きくなる。 On the other hand, the charger 110 is supplied with power corresponding to the external power supply 10, that is, power having a relatively high voltage (first voltage). Therefore, it is necessary to electrically insulate the casing 200, and hence the vehicle body, that is, to the outside. As a result, when noise occurs in the charger 110, the loop of the common mode current becomes large, and the amount of noise generation becomes large.

　その結果、第１変換部１３０および第２変換部１５０にノイズが伝達されてしまい、第１変換部１３０および第２変換部１５０がノイズの影響を受けてしまうおそれがある。 As a result, noise may be transmitted to the first conversion unit 130 and the second conversion unit 150, and the first conversion unit 130 and the second conversion unit 150 may be affected by the noise.

　そこで、図２に示すように、本実施の形態では、電源装置１００の外部に対して絶縁される充電器１１０と、電源装置１００の外部に対して非絶縁状態とされる第１変換部１３０および第２変換部１５０とが異なる空間に配置されるように筐体２００内に設けられる。 Therefore, as shown in FIG. 2, in the present embodiment, charger 110 insulated from the outside of power supply apparatus 100 and first conversion unit 130 not insulated from the outside of power supply apparatus 100. And the second conversion unit 150 are provided in the housing 200 so as to be disposed in different spaces.

　筐体２００には、充電器１１０が配置される第１空間２０１と、第１変換部１３０および第２変換部１５０が配置される第２空間２０２とが形成されている。第１空間２０１と第２空間２０２との間には、シールド部２２０が位置する。 The housing 200 is formed with a first space 201 in which the charger 110 is disposed, and a second space 202 in which the first conversion unit 130 and the second conversion unit 150 are disposed. The shield part 220 is located between the first space 201 and the second space 202.

　シールド部２２０は、第１空間２０１と第２空間２０２とを仕切る壁であり、第１空間２０１および第２空間２０２の何れか一方で発生したノイズを遮断する機能を有する。つまり、シールド部２２０により、第１空間２０１と第２空間２０２とが分離されることで、充電器１１０で発生したノイズが遮断される。その結果、ノイズが第１変換部１３０および第２変換部１５０に伝達されることを抑制することができる。その結果、電源装置１００全体にノイズが伝達されることを抑制することができる。 The shield part 220 is a wall that divides the first space 201 and the second space 202, and has a function of blocking noise generated in any one of the first space 201 and the second space 202. That is, the first space 201 and the second space 202 are separated by the shield portion 220, so that the noise generated in the charger 110 is cut off. As a result, transmission of noise to the first conversion unit 130 and the second conversion unit 150 can be suppressed. As a result, transmission of noise to the entire power supply apparatus 100 can be suppressed.

　ところで、充電器１１０は、第１制御部１２０により制御されるが、充電器１１０でノイズが発生すると、第１制御部１２０がこのノイズの影響を受けてしまうおそれがある。そのため、第１制御部１２０を介して、電源装置１００全体がこのノイズの影響を受けてしまうおそれがある。 By the way, although the charger 110 is controlled by the first control unit 120, when noise is generated in the charger 110, the first control unit 120 may be affected by the noise. Therefore, the entire power supply apparatus 100 may be affected by this noise via the first control unit 120.

　そこで、本実施の形態では、第１制御部１２０が第２空間２０２に格納される。これにより、第１制御部１２０が、電源装置１００の外部に対して絶縁されていない第１変換部１３０および第２変換部１５０と同一の空間に位置する。言い換えると、第１制御部１２０が、充電器１１０と異なる空間に位置する。そのため、第１制御部１２０に充電器１１０で発生するノイズが伝達されにくくなるので、第１制御部１２０がこのノイズの影響を受けることを低減することができる。 Therefore, in the present embodiment, the first control unit 120 is stored in the second space 202. Thus, the first control unit 120 is located in the same space as the first conversion unit 130 and the second conversion unit 150 which are not insulated from the outside of the power supply apparatus 100. In other words, the first control unit 120 is located in a space different from the charger 110. Therefore, the noise generated in the charger 110 is less likely to be transmitted to the first control unit 120, and therefore the influence of the noise on the first control unit 120 can be reduced.

　なお、さらに言い換えると、第１制御部１２０は、電源装置１００の外部に対して非絶縁状態とされる第１変換部１３０および第２変換部１５０と同じ空間に位置する。 Furthermore, in other words, the first control unit 120 is located in the same space as the first conversion unit 130 and the second conversion unit 150 which are not insulated from the outside of the power supply apparatus 100.

　ここで、上述の通り、第１変換部１３０および第２変換部１５０は、電源装置１００の外部に対して非絶縁状態であるため、第１制御部１２０が、第１変換部１３０および第２変換部１５０から受けるノイズの影響は小さい。 Here, as described above, since the first conversion unit 130 and the second conversion unit 150 are in the non-insulated state with respect to the outside of the power supply apparatus 100, the first control unit 120 performs the first conversion unit 130 and the second conversion unit. The influence of noise received from the conversion unit 150 is small.

　また、一般的に、充電器１１０は車両の停車中に用いられ、インバータである第１変換部１３０は車両の走行時に用いられる。すなわち、充電器１１０と第１変換部１３０と排他動作を行うため、第１制御部１２０が、第１変換部１３０から受けるノイズの影響は極めて小さい。 Generally, the charger 110 is used when the vehicle is stopped, and the first conversion unit 130, which is an inverter, is used when the vehicle travels. That is, since the charger 110 and the first conversion unit 130 perform the exclusive operation, the influence of the noise that the first control unit 120 receives from the first conversion unit 130 is extremely small.

　また、シールド部２２０には、孔（図示せず）が形成され、充電器１１０と第１制御部１２０とを接続する配線１０１が挿通される。配線１０１には、ノイズを低減するための、例えば、ＬＣＲフィルタ１７０が設けられる。これにより、配線１０１を介して充電器１１０から第１制御部１２０にノイズが伝達することをさらに低減することができる。 Further, a hole (not shown) is formed in the shield portion 220, and the wire 101 connecting the charger 110 and the first control portion 120 is inserted. The wiring 101 is provided with, for example, an LCR filter 170 for reducing noise. As a result, transmission of noise from the charger 110 to the first control unit 120 via the wiring 101 can be further reduced.

　また、少なくとも第１空間２０１に位置する配線１０１にはノイズシールドが施されることが好ましい。これにより、配線１０１に充電器１１０からのノイズが重畳することを低減できる。なお、第１空間２０１に第１制御部１２０を搭載した場合には、第１制御部１２０自体にノイズシールドが必要となり、高コストとなってしまう。 Further, it is preferable that noise shielding be applied to the wiring 101 located at least in the first space 201. Thereby, the noise from the charger 110 can be prevented from being superimposed on the wiring 101. When the first control unit 120 is mounted in the first space 201, the first control unit 120 itself needs a noise shield, which results in high cost.

　また、コネクタ２１０は、筐体２００における第２空間２０２を形成する壁に設けられている。このため、車両用制御装置５０からの信号線が、充電器１１０により発生するノイズの影響を受けることを抑制することができる。 Further, the connector 210 is provided on a wall forming the second space 202 in the housing 200. For this reason, it can suppress that the signal wire | line from the control apparatus 50 for vehicles receives to the influence of the noise which generate | occur | produces with the charger 110. FIG.

　また、シールド部２２０には、放熱フィン２２１が設けられている。放熱フィン２２１は、図２における左右方向に並んで複数設けられる。また、充電器１１０は、第１空間２０１内においてシールド部２２０に近接した位置に配置されている。第１変換部１３０および第２変換部１５０は、第２空間２０２においてシールド部２２０に近接した位置に配置されている。 In addition, the radiation fin 221 is provided in the shield portion 220. A plurality of radiation fins 221 are provided side by side in the left-right direction in FIG. Further, the charger 110 is disposed at a position close to the shield portion 220 in the first space 201. The first conversion unit 130 and the second conversion unit 150 are disposed at a position close to the shield unit 220 in the second space 202.

　これにより、比較的発熱量の多い充電器１１０、第１変換部１３０および第２変換部１５０により発生する熱を、放熱フィン２２１を介して電源装置１００の外部へ放熱させることができる。 Thus, the heat generated by the battery charger 110, the first conversion unit 130, and the second conversion unit 150, which generate a relatively large amount of heat, can be dissipated to the outside of the power supply apparatus 100 through the heat dissipation fins 221.

　なお、上記実施の形態における電源装置１００は、１つの筐体２００で構成されていたが、この構成に限定されない。例えば、第１空間２０１を有する第１筐体と、第２空間２０２を有する第２筐体とにより、電源装置１００が構成されていてもよい。 In addition, although the power supply device 100 in the said embodiment was comprised by one housing | casing 200, it is not limited to this structure. For example, the power supply device 100 may be configured of a first housing having the first space 201 and a second housing having the second space 202.

　また、上記実施の形態では、シールド部２２０が充電器１１０と、第１変換部１３０および第２変換部１５０との両方を放熱可能な放熱フィン２２１を有していたが、この構成に限定されない。例えば、シールド部２２０に設けられる放熱フィン２２１が、充電器１１０と、第１変換部１３０および第２変換部１５０との何れか一方を放熱可能な構成であってもよいし、シールド部２２０に放熱フィン２２１が設けられていない構成であってもよい。 Further, in the above embodiment, the shield part 220 has the radiation fin 221 capable of radiating heat to both the charger 110 and the first conversion part 130 and the second conversion part 150, but the present invention is not limited to this configuration. . For example, the radiation fin 221 provided in the shield portion 220 may be configured to be capable of radiating heat to any one of the charger 110 and the first conversion portion 130 and the second conversion portion 150. The radiation fin 221 may not be provided.

　その他、上記実施の形態は、何れも本開示を実施するにあたっての具体化の一例を示したものに過ぎず、これらによって本開示の技術的範囲が限定的に解釈されてはならないものである。すなわち、本開示はその要旨、またはその主要な特徴から逸脱することなく、様々な形で実施することができる。 In addition, any of the above-described embodiments is merely an example of embodying the present disclosure, and the technical scope of the present disclosure should not be interpreted in a limited manner by these. That is, the present disclosure can be implemented in various forms without departing from the scope or main features of the present disclosure.

　本開示の電源装置は、絶縁が必要なスイッチング回路（例えば、充電器）で発生するノイズの影響を低減することが可能な電源装置として有用である。 The power supply device of the present disclosure is useful as a power supply device capable of reducing the influence of noise generated in a switching circuit (for example, a charger) that requires isolation.

１０　　外部電源
２０　　バッテリー
３０　　モーター
４０　　負荷
５０　　車両用制御装置
１００　　電源装置
１０１　　配線
１１０　　充電器
１１１　　整流部
１１２　　力率改善部
１１２Ａ，１１３Ａ，１１３Ｂ，１１３Ｃ，１１３Ｄ　　スイッチング素子
１１３　　充電用ＤＣ／ＤＣ変換部（第３変換部）
１２０　　第１制御部
１３０　　電力変換部（第１変換部）
１４０　　第２制御部
１５０　　負荷用ＤＣ／ＤＣ変換部（第２変換部）
１６０　　第３制御部
１７０　　ＬＣＲフィルタ
２００　　筐体
２０１　　第１空間
２０２　　第２空間
２１０　　コネクタ
２２０　　シールド部
２２１　　放熱フィン DESCRIPTION OF SYMBOLS 10 External power supply 20 Battery 30 Motor 40 Load 50 Vehicle control apparatus 100 Power supply device 101 Wiring 110 Charger 111 Rectification part 112 Power factor improvement parts 112A, 113A, 113B, 113C, 113D Switching element 113 DC / DC conversion part for charging ( Third conversion unit)
120 first control unit 130 power conversion unit (first conversion unit)
140 Second control unit 150 DC / DC conversion unit for load (second conversion unit)
160 third control unit 170 LCR filter 200 housing 201 first space 202 second space 210 connector 220 shield portion 221 radiation fin

Claims (9)

第１空間に格納され、外部に対して絶縁された第１スイッチング回路と、
前記第１空間とは異なる第２空間に格納され、前記外部に対して絶縁されていない第２スイッチング回路と、
前記第２空間に格納され、前記第１スイッチング回路を制御する制御回路と、を備えた、
電源装置。 A first switching circuit stored in the first space and insulated from the outside;
A second switching circuit stored in a second space different from the first space and not insulated from the outside;
And a control circuit which is stored in the second space and controls the first switching circuit.
Power supply. 前記電源装置は、車両に搭載され、
前記外部は、車体である、
請求項１に記載の電源装置。 The power supply device is mounted on a vehicle
The outside is a car body,
The power supply device according to claim 1. 前記第２空間を形成する壁をさらに備え、
前記壁には、前記外部との通信に用いられるコネクタが設けられている、
請求項１に記載の電源装置。 The apparatus further comprises a wall forming the second space,
The wall is provided with a connector used for communication with the outside,
The power supply device according to claim 1. 前記第１空間と前記第２空間とを分離し、前記第１スイッチング回路から発生するノイズを遮断するシールド部をさらに備えた、
請求項１に記載の電源装置。 And a shield unit for separating the first space and the second space and blocking noise generated from the first switching circuit.
The power supply device according to claim 1. 前記シールド部は、前記第１スイッチング回路および前記第２スイッチング回路の少なくとも一方を放熱する、
請求項４に記載の電源装置。 The shield unit dissipates heat of at least one of the first switching circuit and the second switching circuit.
The power supply device according to claim 4. 前記第１空間および前記第２空間を有する筐体をさらに備えた、
請求項１に記載の電源装置。 The apparatus further comprises a housing having the first space and the second space,
The power supply device according to claim 1. 前記第１空間を有する第１筐体と、
前記第２空間を有する第２筐体と、をさらに備えた、
請求項１に記載の電源装置。 A first case having the first space;
And a second housing having the second space.
The power supply device according to claim 1. 前記第１スイッチング回路には、第１電圧が供給され、
前記第２スイッチング回路には、前記第１電圧よりも小さい第２電圧が供給される、
請求項１に記載の電源装置。 A first voltage is supplied to the first switching circuit,
A second voltage smaller than the first voltage is supplied to the second switching circuit.
The power supply device according to claim 1. 前記第１スイッチング回路は、前記外部から供給される交流電力を直流電力に変換してバッテリーを充電する充電器を含み、
前記第２スイッチング回路は、前記バッテリーからの電力を変換して負荷に供給する電力変換回路を含む、
請求項１に記載の電源装置。 The first switching circuit includes a charger that converts the externally supplied alternating current power to direct current power to charge a battery.
The second switching circuit includes a power conversion circuit that converts power from the battery and supplies the power to a load.
The power supply device according to claim 1.
PCT/JP2018/020691 2017-07-14 2018-05-30 Power supply device Ceased WO2019012835A1 (en)

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Publication number Priority date Publication date Assignee Title
JP7153137B2 (en) * 2019-05-21 2022-10-13 日立Astemo株式会社 Power converter and electric drive unit

Citations (4)

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JP2009093852A (en) * 2007-10-05 2009-04-30 Hitachi Ltd Connector seal structure
WO2014033852A1 (en) * 2012-08-29 2014-03-06 三菱電機株式会社 In-vehicle power conversion apparatus
JP2014110286A (en) * 2012-11-30 2014-06-12 Toyota Industries Corp Power conversion device
WO2017022478A1 (en) * 2015-08-06 2017-02-09 日立オートモティブシステムズ株式会社 Dc-dc converter integrated charger

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2009093852A (en) * 2007-10-05 2009-04-30 Hitachi Ltd Connector seal structure
WO2014033852A1 (en) * 2012-08-29 2014-03-06 三菱電機株式会社 In-vehicle power conversion apparatus
JP2014110286A (en) * 2012-11-30 2014-06-12 Toyota Industries Corp Power conversion device
WO2017022478A1 (en) * 2015-08-06 2017-02-09 日立オートモティブシステムズ株式会社 Dc-dc converter integrated charger

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