WO2019230453A1 - Dispositif de commande de décharge - Google Patents

Dispositif de commande de décharge Download PDF

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Publication number
WO2019230453A1
WO2019230453A1 PCT/JP2019/019749 JP2019019749W WO2019230453A1 WO 2019230453 A1 WO2019230453 A1 WO 2019230453A1 JP 2019019749 W JP2019019749 W JP 2019019749W WO 2019230453 A1 WO2019230453 A1 WO 2019230453A1
Authority
WO
WIPO (PCT)
Prior art keywords
discharge
driving circuit
connector
discharge resistor
control device
Prior art date
Application number
PCT/JP2019/019749
Other languages
English (en)
Japanese (ja)
Inventor
雅文 唐鎌
高木　亮
Original Assignee
サンデン・オートモーティブコンポーネント株式会社
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 サンデン・オートモーティブコンポーネント株式会社 filed Critical サンデン・オートモーティブコンポーネント株式会社
Priority to DE112019002710.7T priority Critical patent/DE112019002710T5/de
Publication of WO2019230453A1 publication Critical patent/WO2019230453A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/04—Cutting off the power supply under fault conditions

Definitions

  • the present invention relates to a discharge control device.
  • a smoothing capacitor is provided in a driving circuit in an electric compressor, and a discharge resistor is always connected in order to immediately discharge the smoothing capacitor when the power is turned off. .
  • An object of the present invention is to suppress unnecessary power consumption due to a discharge resistor.
  • a discharge control device includes: A connector state detection unit that detects whether or not a connector that connects the driving circuit of the electric compressor and the external power source is connected; A smoothing capacitor connected to the drive circuit and capable of charging and discharging; A discharge resistor for discharging the smoothing capacitor; A switching control unit that switches whether or not to connect a discharge resistor to the driving circuit, When the connector state detection unit detects that the connector is connected, the switching control unit cuts off the discharge resistance from the drive circuit, and the connector state detection unit detects that the connector is cut off. Sometimes a discharge resistor is connected to the drive circuit.
  • the discharge resistor is connected in consideration of safety only when the connector is shut off, for example, due to maintenance, etc., unnecessary power consumption due to the discharge resistor can be avoided in the normal time when the connector is connected. Can be suppressed.
  • FIG. 1 is a schematic configuration diagram of a discharge control device.
  • the discharge control device 11 is included in the electric compressor 12.
  • the electric compressor 12 is mounted on an electric vehicle as a refrigerant circuit of a car air conditioner, and when driven by a built-in electric motor, the electric compressor 12 sucks, compresses and discharges the refrigerant.
  • the discharge control device 11 includes a power connector switch 13 (connector state detection unit), a controller 14 (switching control unit), and a drive circuit 15.
  • the power connector switch 13 detects whether or not a connector that connects the driving circuit 15 and the battery (external power source) is connected.
  • the battery is an ultra-high voltage battery of, for example, 800 V that drives an electric vehicle.
  • the controller 14 is composed of a CPU, for example, and executes a discharge control process to be described later on the driving circuit 15.
  • the driving circuit 15 is a DC circuit, and is a circuit on the power supply side with respect to an inverter circuit (not shown).
  • the drive circuit 15 and the controller 14 are accommodated in an inverter accommodating chamber of the electric compressor 12 together with an inverter circuit (not shown).
  • FIG. 2 is a configuration diagram of the driving circuit.
  • the drive circuit 15 includes a smoothing capacitor 21, a discharge resistor 22, a limiting resistor 23, a capacitor 24, a switch circuit 25, a voltage detection circuit 26, and a bleeder resistor 27.
  • the smoothing capacitor 21 includes a plurality of capacitors connected in series, and stabilizes the voltage of the driving circuit 15.
  • the discharge resistor 22 is composed of, for example, a plurality of resistors of 6 to 10, and is connected to the smoothing capacitor 21 in parallel via a MOSFET 33 described later.
  • the limiting resistor 23 includes a plurality of resistors connected in series, and is connected in parallel to the smoothing capacitor 21.
  • the capacitor 24 is provided for driving the switch circuit 25.
  • the switch circuit 25 is a circuit that switches between connecting and disconnecting the discharge resistor 22 to the driving circuit 15, and is controlled by the controller 14.
  • the voltage detection circuit 26 is connected in parallel to the smoothing capacitor 21, and two systems are provided for redundancy.
  • the switch circuit 25 includes a transistor 31, a transistor 32, a MOSFET 33, and a transistor 34.
  • the transistor 31 is turned on / off by the controller 14.
  • the transistor 32 is turned on / off in accordance with the turning on / off of the transistor 31. That is, the transistor 32 is turned on when the transistor 31 is on, and the transistor 32 is turned off when the transistor 31 is off.
  • the MOSFET 33 is connected in series with the discharge resistor 22 and is turned ON / OFF according to ON / OFF of the transistor 31. That is, when the transistor 31 is ON, the MOSFET 33 is ON, and the discharge resistor 22 is connected to the driving circuit 15. On the other hand, when the transistor 31 is OFF, the MOSFET 33 is turned OFF, and the discharge resistor 22 is cut off from the driving circuit 15.
  • the transistor 34 is turned on / off by the controller 14 and can forcibly turn off the MOSFET 33. That is, when the transistor 34 is OFF, the MOSFET 33 is turned ON when the transistor 32 is turned ON. On the other hand, when the transistor 34 is ON, the MOSFET 33 is turned OFF even if the transistor 32 is ON.
  • FIG. 3 is a flowchart illustrating an example of the discharge control process.
  • step S101 the state of the power connector switch 13 is detected to determine whether or not the connector is connected.
  • step S102 the discharge resistor 22 is disconnected from the driving circuit 15 and then the process returns to a predetermined main program.
  • the transistor 31 is turned off and the transistor 34 is turned off.
  • the process proceeds to step S104.
  • the smoothing capacitor 21 is discharged by connecting the discharge resistor 22 to the driving circuit 15. Specifically, the transistor 31 is turned on and the transistor 34 is turned off.
  • a succeeding step S105 it is determined whether or not the discharge of the smoothing capacitor 21 is abnormal.
  • the voltage of the driving circuit 15 is set to a predetermined voltage V1 (for example, 60 V) until a predetermined time T1 (for example, 4 to 5 seconds) elapses after the discharge resistor 22 of the driving circuit 15 is connected. It is determined whether or not it has decreased to If the voltage has decreased to the voltage V1 before the time T1 elapses, it is determined that there is no abnormality and the process proceeds to step S106. On the other hand, if the voltage has not dropped to the voltage V1 until the time T1 elapses, it is determined that there is an abnormality and the process proceeds to step S107.
  • V1 for example, 60 V
  • T1 for example, 4 to 5 seconds
  • step 105 corresponds to the abnormality detection unit.
  • step S101 the discharge resistor 22 is cut off from the driving circuit 15 via the switch circuit 25 (step S102).
  • step S104 the discharge resistor 22 is connected to the driving circuit 15 via the switch circuit 25 (step S104).
  • the relay circuit for turning on / off the power supply from the battery is generally not provided in the electric compressor 12 but only on the vehicle side. Therefore, the connection state of the connector is detected by the power connector switch 13.
  • the discharge resistor 22 is connected in consideration of safety only when the connector is cut off due to maintenance or the like.
  • the discharge resistor 22 can be cut off at the normal time when the connector is connected. . Thereby, unnecessary power consumption by the discharge resistor 22 can be suppressed. Further, since no current flows through the discharge resistor 22, heat generation can be reduced to zero.
  • a high voltage is constantly applied. Therefore, in order to discharge quickly, each resistor must be reduced, and the number of resistors is reduced accordingly. It must be increased. For example, at a high voltage such as 800 V, a resistance of more than a few tens is required, which increases the number of parts and increases the size.
  • the power connector switch 13 may erroneously detect the disconnection of the connector in a state where the connector is not disconnected. Therefore, when the voltage of the driving circuit 15 does not decrease to the predetermined voltage V1 (the determination in step S105 is “No”), it is determined that the smoothing capacitor 21 is abnormally discharged, and the driving circuit 15 is connected via the switch circuit 25. The discharge resistor 22 is cut off from the circuit 15 (step S102). Thereby, unnecessary power consumption by the discharge resistor 22 can be suppressed.
  • the power connector switch 13 detects whether or not the driving circuit 15 and the external power source are connected.
  • the present invention is not limited to this, and a signal from the vehicle side system is input. It may be detected.
  • the controller 14 determines whether or not the discharge resistor 22 is connected.
  • the controller 14 is not limited to this and may be configured by a circuit having an equivalent function.
  • the circuit may be configured to discharge by the limiting resistor 23 and connect the discharge resistor 22 when the voltage falls below a predetermined value.
  • SYMBOLS 11 Discharge control apparatus, 12 ... Electric compressor, 13 ... Power supply connector switch, 14 ... Controller, 15 ... Drive circuit, 21 ... Smoothing capacitor, 22 ... Discharge resistance, 23 ... Limit resistance, 24 ... Capacitor, 25 ... Switch Circuit, 26 ... Voltage detection circuit, 27 ... Bleeder resistance, 31 ... Transistor, 32 ... Transistor, 33 ... MOSFET, 34 ... Transistor

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Inverter Devices (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Le problème décrit par la présente invention est de supprimer une consommation d'énergie inutile due à une résistance à la décharge. Dans la présente invention, lorsqu'il est détecté qu'un connecteur a été connecté, un dispositif de commande 14 déconnecte une résistance de décharge 22 d'un circuit d'attaque 15, et connecte la résistance de décharge 22 au circuit d'attaque 15 lors de la détection du fait que le connecteur a été déconnecté.
PCT/JP2019/019749 2018-05-31 2019-05-17 Dispositif de commande de décharge WO2019230453A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112019002710.7T DE112019002710T5 (de) 2018-05-31 2019-05-17 Entladungssteuervorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018104797A JP2019213271A (ja) 2018-05-31 2018-05-31 放電制御装置
JP2018-104797 2018-05-31

Publications (1)

Publication Number Publication Date
WO2019230453A1 true WO2019230453A1 (fr) 2019-12-05

Family

ID=68696666

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/019749 WO2019230453A1 (fr) 2018-05-31 2019-05-17 Dispositif de commande de décharge

Country Status (3)

Country Link
JP (1) JP2019213271A (fr)
DE (1) DE112019002710T5 (fr)
WO (1) WO2019230453A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11178101A (ja) * 1997-12-10 1999-07-02 Sanden Corp 電気自動車用空調装置の電源入力回路
JP2017060225A (ja) * 2015-09-14 2017-03-23 アイシン・エィ・ダブリュ株式会社 インバータ装置
JP2018026979A (ja) * 2016-08-12 2018-02-15 株式会社Ｓｕｂａｒｕ 車両

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04252682A (ja) * 1991-01-29 1992-09-08 Sharp Corp テレビジョン受像機の過電流保護回路
JP5094797B2 (ja) * 2009-08-07 2012-12-12 日立オートモティブシステムズ株式会社 直流電源平滑用コンデンサーの放電回路
JP2013110836A (ja) * 2011-11-21 2013-06-06 Samsung Yokohama Research Institute Co Ltd 電力供給装置
JP6471656B2 (ja) * 2015-09-15 2019-02-20 アイシン・エィ・ダブリュ株式会社 インバータ制御基板

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11178101A (ja) * 1997-12-10 1999-07-02 Sanden Corp 電気自動車用空調装置の電源入力回路
JP2017060225A (ja) * 2015-09-14 2017-03-23 アイシン・エィ・ダブリュ株式会社 インバータ装置
JP2018026979A (ja) * 2016-08-12 2018-02-15 株式会社Ｓｕｂａｒｕ 車両

Also Published As

Publication number Publication date
DE112019002710T5 (de) 2021-02-18
JP2019213271A (ja) 2019-12-12

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