WO2020059058A1 - Dispositif de batterie de stockage - Google Patents

Dispositif de batterie de stockage Download PDF

Info

Publication number
WO2020059058A1
WO2020059058A1 PCT/JP2018/034699 JP2018034699W WO2020059058A1 WO 2020059058 A1 WO2020059058 A1 WO 2020059058A1 JP 2018034699 W JP2018034699 W JP 2018034699W WO 2020059058 A1 WO2020059058 A1 WO 2020059058A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
output voltage
converter
storage battery
voltage
Prior art date
Application number
PCT/JP2018/034699
Other languages
English (en)
Japanese (ja)
Inventor
黒田　和人
関野　正宏
弘樹 松下
英生 山崎
クラレンス ジョイ ヴィリアモア カトリコ
Original Assignee
株式会社東芝
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 株式会社東芝 filed Critical 株式会社東芝
Priority to PCT/JP2018/034699 priority Critical patent/WO2020059058A1/fr
Publication of WO2020059058A1 publication Critical patent/WO2020059058A1/fr

Links

Images

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • 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

Definitions

  • the embodiment of the present invention relates to a storage battery device.
  • the present invention has been made in view of the above, and an object of the present invention is to provide a storage battery device that is easy to handle and can supply high-voltage power while reducing the size of the device.
  • the storage battery device of the embodiment is a storage battery device that is mounted on a vehicle and supplies power to in-vehicle devices, and includes a battery unit having a plurality of series-connected battery cells between a pair of first charge / discharge terminals, A DC / DC converter for boosting the voltage of the battery unit, and a step-up ratio of the DC / DC converter when the output voltage of the battery unit falls below a predetermined threshold voltage lower than the rated output voltage of the storage battery device. And a control unit for controlling.
  • FIG. 1 is a schematic block diagram of a storage battery system for a vehicle according to an embodiment.
  • FIG. 2 is a schematic configuration block diagram of the storage battery device.
  • FIG. 3 is an explanatory diagram when the charge / discharge current of the embodiment is zero.
  • FIG. 4 is a processing flowchart when the storage battery device is charged and discharged.
  • FIG. 1 is a schematic block diagram of a storage battery system for a vehicle according to an embodiment.
  • the vehicle storage battery system 10 functions as a generator (generator) 12G that can be driven by the engine 11 to generate power, or functions as a motor (motor) 12M that is supplied with electric power to assist (assist) driving the engine 11.
  • Power device 12 a storage battery device 13 for supplying power to the vehicle-mounted device, a controller 14 that measures the state of charge (voltage, charging current, and temperature) of the storage battery device 13 and controls the storage battery device 13, and a storage battery device.
  • a load group 15 to which high-voltage power (for example, 48 V power) is supplied from the power supply 13.
  • the power device 12 is included in the load group 15 when functioning as the electric motor 12M.
  • FIG. 2 is a schematic configuration block diagram of the storage battery device.
  • the storage battery device 13 includes a control unit 21 configured as a microprocessor unit (MPU) or the like that controls the entire storage battery device 13, a battery unit 23 in which a plurality of battery cells 22 are connected in series, and a state of the battery unit 23. (SOC, voltage, charging current, and temperature), and a monitoring circuit 24 that notifies the control circuit 21 of the monitoring result.
  • MPU microprocessor unit
  • SOC voltage, charging current, and temperature
  • monitoring circuit 24 that notifies the control circuit 21 of the monitoring result.
  • the control unit 21 has a function of detecting the output voltage Vout.
  • a lithium ion secondary battery or a nickel hydride secondary battery is preferable because of its excellent output characteristics.
  • a lithium ion secondary battery is more preferable.
  • the storage battery device 13 has one end connected to the high potential side terminal of the battery unit 23, one end connected to the low potential side terminal of the battery unit 23, and the other end connected to the other end of the coil 25.
  • a capacitor 28 connected to the terminal and the input / output terminal T2.
  • the storage battery device 13 further includes a third transistor unit 29 having one end connected to the other end of the second transistor unit 27 and the other end connected to the input / output terminal T1, and a connection point between the second transistor unit 27 and the capacitor.
  • a current sensor 30 provided on a current path closer to the third transistor unit 29 than the CP and detecting the output current Iout; a first transistor unit 26, a second transistor unit 27, and a third transistor unit under the control of the control unit 21 And a gate driver 31 for driving the driving circuit 29.
  • the first transistor unit 26 has an N-channel MOS having a source terminal S connected to the low potential side terminal of the battery unit 23, a drain terminal connected to the coil 25, and a gate terminal G connected to the gate driver 31.
  • the transistor 26T includes a diode (parasitic diode) 26D whose anode terminal A is connected to the source terminal S of the N-channel MOS transistor 26T and whose cathode terminal K is connected to the drain terminal D of the N-channel MOS transistor 26T. .
  • the second transistor unit 27 has an N-channel MOS transistor having a source terminal S connected to a drain terminal D of an N-channel MOS transistor 26T, a drain terminal D connected to a capacitor 28, and a gate terminal G connected to a gate driver 31.
  • the transistor 27T includes a diode (parasitic diode) 27D whose anode terminal A is connected to the source terminal S of the N-channel MOS transistor 27T and whose cathode terminal K is connected to the drain terminal D of the N-channel MOS transistor 27T. .
  • the third transistor unit 29 includes an N-channel MOS transistor 27T having a source terminal S connected to the input / output terminal T1, a drain terminal D connected to the capacitor 28, a gate terminal G connected to the gate driver 31, and an anode.
  • a diode (parasitic diode) 29D whose terminal A is connected to the source terminal S of the N-channel MOS transistor 29T and whose cathode terminal K is connected to the drain terminal D of the N-channel MOS transistor 29T is provided.
  • the coil 25, the first transistor unit 26, the second transistor unit 27, and the capacitor 28 constitute a DC / DC converter 35 configured as a step-up / step-down chopper circuit.
  • the first transistor unit 26 effectively functions as a switch
  • the second transistor unit 27 It effectively functions as the diode 27D.
  • the first transistor unit 26 effectively functions as a diode D26, and the second transistor unit 27 functions as a switch. It is functioning.
  • the third transistor unit 29 functions as a circuit breaker provided in the discharge current path when the battery unit 23 discharges.
  • the battery unit 23 when the output voltage Vout0 of the battery unit 23 corresponding to the SOC (State of Charge) of the battery unit 23 is lower than the first threshold voltage VTH1, the battery unit 23 is allowed to do so.
  • the boosting is performed at a constant boosting ratio so as to be within the allowable output voltage.
  • the size of the coil for functioning as the step-up / step-down chopper circuit can be suppressed as compared with the case where the effective output voltage of the battery unit 23 is made closer to the rated output voltage.
  • the size of the storage battery device 13 can be reduced.
  • the control is performed so that the storage battery device 13 exhibits the same behavior as a normal secondary battery that does not include the DC / DC converter 35.
  • a load or a charging device external to the storage battery device 13 can perform control without performing any special control assuming that a normal secondary battery is connected as the storage battery device 13.
  • the storage battery device 13 naturally behaves as a normal secondary battery without the DC / DC converter 35 when viewed from the load external to the storage battery device 13 or the charging device. .
  • Vout0 VOFS + KSOC.SOC-KI.Iout (0)
  • VOFS is a predetermined offset voltage (unit V)
  • KSOC is a coefficient (constant value: unit V /%) corresponding to the SOC of the battery unit 23
  • SOC is SOC (unit%) of the battery unit 23
  • KI is a coefficient (constant value: unit ⁇ ) that artificially represents the internal resistance of the battery unit 23
  • Iout is the output current (unit A) of the storage battery device 13.
  • the output voltage Vout0 of the battery unit 23 When the output voltage Vout0 of the battery unit 23 is lower than the first threshold voltage VTH1, the output voltage Vout of the storage battery device 13, that is, the output voltage of the DC / DC converter 35 satisfies the above-described condition. It is set according to equation (1).
  • Vout KG ⁇ Vin (1)
  • KG is a constant step-up ratio
  • Vin is the voltage of the power actually output from the battery unit 23 to the DC / D converter 35.
  • the output voltage Vout0 of the battery unit 23 corresponding to the SOC of the battery unit 23 is equal to or higher than the first threshold voltage VTH1 and lower than the second threshold voltage VTH2
  • the output voltage Vout of the storage battery device 13 is set according to the equation (2) so that the output voltage of the storage battery device 13 exhibits the same behavior as a normal storage battery in which the DC / DC converter 35 is not provided.
  • Vout VOFS + KSOC.SOC-KI.Iout (2)
  • the output voltage Vout0 of the battery unit 23 corresponding to the SOC is in a region where the first threshold voltage VTH1 is equal to or less than 42V, that is, when the voltage Vin of the battery unit 23 is 18 to 21V.
  • FIG. 4 is a processing flowchart when the storage battery device is charged and discharged.
  • the control unit 21 of the storage battery device 13 changes the state (SOC, voltage Vin, charging current, and temperature) of the battery unit 23 notified by the monitoring circuit 24. Acquire (Step S11).
  • the controller 14 determines whether a failure notification has been received from the monitoring circuit 24 (step S12).
  • control unit 21 first Vout0 ⁇ VTH1 Is determined (step S15).
  • step S15 Vout0 ⁇ VTH1 Is satisfied (step S15; Yes)
  • control unit 21 operates the DC / DC converter 35 as a step-down chopper circuit to charge the battery cell when Vout> Vout0, and activates the DC / DC converter 35 when Vout ⁇ Vout0.
  • the boost chopper circuit is controlled so as to operate in a direction to discharge the battery cells.
  • control unit 21 controls the DC / DC converter 35 so that the difference between Vout and Vout0 disappears, but controls the output current Iout within a range where the output current Iout falls within the allowable charge / discharge current.
  • the N-channel MOS transistor 27T of the transistor unit 27 is kept open (off state) while the N-channel MOS transistor 26T is on, and the N-channel MOS transistor 27T of the transistor unit 27 is kept off during the off period of the N-channel MOS transistor 26T. Set to the closed state (ON state).
  • step S15 Vout0> VTH1 Is satisfied (step S15; No), the control unit 21 VTH1 ⁇ Vout0 ⁇ VTH2 Is determined (step S17).
  • step S17 VTH1 ⁇ Vout0 ⁇ VTH2 Is satisfied (step S17; Yes)
  • control unit 21 operates the DC / DC converter 35 as a step-down chopper circuit to charge the battery cell when Vout> Vout0, and activates the DC / DC converter 35 when Vout ⁇ Vout0.
  • the boost chopper circuit is controlled so as to operate in a direction to discharge the battery cells.
  • control unit 21 performs opening / closing control (on / off control) of the N-channel MOS transistor 26T of the first transistor unit 26 and the N-channel MOS transistor 27T of the transistor unit 27 according to a predetermined clock signal.
  • Output voltage Vout VOFS + KSOC.SOC-KI.Iout Is controlled so that
  • step S17 determination, VTH1 ⁇ Vout0 ⁇ VTH2 If not (step S17; No), ie, VTH2 ⁇ Vout0 (Step S17; No), the control unit 21 effectively stops the operation of the step-up / step-down chopper circuit (through the step-up / step-down chopper circuit) and reduces the power of the battery unit 23 to the voltage of the battery unit 23. Output as Vin.
  • the N-channel MOS transistor 26T of the first transistor unit 26 is kept open (off state) and the N-channel MOS transistor 27T of the second transistor unit 27 is kept closed (on state) via the gate driver 31.
  • control unit 21 requests the vehicle to permit the stop of the storage battery device through communication (step S20). Subsequently, the control unit 21 determines whether a stop permission has been received from the vehicle (step S21).
  • step S21 If it is determined in step S21 that the stop permission has not yet been received from the vehicle, the process returns to step S20, and the above-described process is repeated. If it is determined in step S21 that a stop permission has been received from the vehicle (step S21; Yes), the control unit 21 stops driving the transistor units 26, 27, and 29 and ends the process.
  • VTH1 ⁇ Vout0 ⁇ VTH2 the behavior of the storage battery device 13 is simulated as a simple storage battery device without a step-up / step-down chopper circuit. Therefore, the load group 15 can be viewed as a mere storage battery device having no control function, and there is no need to perform special control on the load group 15 side.
  • the step-up / step-down chopper circuit is effectively stopped and the power of the battery unit 23 constituting the storage battery device 13 is supplied as it is, so that the step-up / step-down chopper circuit is always operated. Power consumption can be reduced as compared with the case where the power is stored, and the capacity of the storage battery device 13 effectively increases.
  • the program executed by the storage battery device of the present embodiment can be read by a computer such as a semiconductor storage device such as a CD-ROM, a DVD (Digital Versatile Disk), and a USB memory in an installable or executable file. It is provided by being recorded on a recording medium.
  • a computer such as a semiconductor storage device such as a CD-ROM, a DVD (Digital Versatile Disk), and a USB memory in an installable or executable file. It is provided by being recorded on a recording medium.
  • the program executed by (the control unit of) the storage battery device of the present embodiment may be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network. . Further, the program executed by (the control unit of) the storage battery device of the present embodiment may be provided or distributed via a network such as the Internet.
  • the program executed by (the control unit of) the storage battery device of the present embodiment may be configured to be provided by being incorporated in a ROM or the like in advance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne un dispositif de batterie de stockage qui est monté sur un véhicule pour fournir de l'énergie à un dispositif embarqué et comprend : une unité batterie ayant une pluralité d'éléments de batterie connectés en série entre une paire de premières bornes de charge/décharge ; un convertisseur CC/CC pour amplifier la tension de l'unité batterie ; et une unité de commande qui, lorsque la tension de sortie de l'unité batterie devient inférieure ou égale à une tension de seuil prédéterminée inférieure à une tension de sortie nominale du dispositif de batterie de stockage, commande le rapport d'amplification du convertisseur CC/CC afin qu'il soit constant. Le dispositif de batterie de stockage est donc facile à manipuler et peut fournir une énergie de système à haute tension, tout en obtenant une diminution de taille.
PCT/JP2018/034699 2018-09-19 2018-09-19 Dispositif de batterie de stockage WO2020059058A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/034699 WO2020059058A1 (fr) 2018-09-19 2018-09-19 Dispositif de batterie de stockage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/034699 WO2020059058A1 (fr) 2018-09-19 2018-09-19 Dispositif de batterie de stockage

Publications (1)

Publication Number Publication Date
WO2020059058A1 true WO2020059058A1 (fr) 2020-03-26

Family

ID=69886711

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/034699 WO2020059058A1 (fr) 2018-09-19 2018-09-19 Dispositif de batterie de stockage

Country Status (1)

Country Link
WO (1) WO2020059058A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003237501A (ja) * 2002-02-19 2003-08-27 Denso Corp 自動車用電源装置
JP2009142061A (ja) * 2007-12-06 2009-06-25 Denso Corp Ｄｃ−ｄｃコンバータ装置
JP2013140165A (ja) * 2013-02-08 2013-07-18 Sumitomo Heavy Ind Ltd 建設機械及び建設機械の制御方法
JP2015047893A (ja) * 2013-08-30 2015-03-16 三菱電機株式会社 地上蓄電池制御装置およびその制御方法、鉄道用地上蓄電池制御システム
JP2015139307A (ja) * 2014-01-23 2015-07-30 ファナック株式会社 Ｄｃ／ｄｃコンバータ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003237501A (ja) * 2002-02-19 2003-08-27 Denso Corp 自動車用電源装置
JP2009142061A (ja) * 2007-12-06 2009-06-25 Denso Corp Ｄｃ−ｄｃコンバータ装置
JP2013140165A (ja) * 2013-02-08 2013-07-18 Sumitomo Heavy Ind Ltd 建設機械及び建設機械の制御方法
JP2015047893A (ja) * 2013-08-30 2015-03-16 三菱電機株式会社 地上蓄電池制御装置およびその制御方法、鉄道用地上蓄電池制御システム
JP2015139307A (ja) * 2014-01-23 2015-07-30 ファナック株式会社 Ｄｃ／ｄｃコンバータ

Similar Documents

Publication Publication Date Title
US8581557B2 (en) Direct-current power source apparatus
US9793722B2 (en) Power source apparatus for vehicle
US9350177B2 (en) Equalization circuit, power supply system, and vehicle
KR102000237B1 (ko) 전기 시스템 및 전기 시스템을 작동시키기 위한 방법
KR101658867B1 (ko) Dc-ac 인버터에 대한 프리-차지 및 전압 공급 시스템
US10017138B2 (en) Power supply management system and power supply management method
EP2685592A1 (fr) Dispositif de correction d'équilibre, et système de stockage d'électricité
TWI804503B (zh) 蓄電系統以及電氣機器
JP6427574B2 (ja) パワーバッテリーの素子の充電平衡化装置
JP2009118727A (ja) ハイブリッド電源
US20150069960A1 (en) Auxiliary Battery Charging Apparatus
EP2830189B1 (fr) Dispositif de correction de l'équilibre et système de stockage d'énergie
KR20160114677A (ko) 탑재형 전력 공급 장치를 작동시키기 위한 방법
US11552483B2 (en) Electric storage system
WO2019244606A1 (fr) Dispositif d'alimentation électrique de véhicule
CN112242728B (zh) 电源系统、dcdc转换器装置和充电方法
JP5187407B2 (ja) 補機バッテリ充電装置
US11489329B2 (en) Power supply system
JP2014150593A (ja) 車両用電源システム
US10576835B2 (en) Energy storage device, transport apparatus, and control method
US11108248B2 (en) Power supply system including high-voltage system and low-voltage system and insulation thereof
JP2009148110A (ja) 充放電器とこれを用いた電源装置
JP5275889B2 (ja) 充電装置および充電方法
WO2020059058A1 (fr) Dispositif de batterie de stockage
JP2016174475A (ja) 蓄電システム

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18933963

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18933963

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP