WO2014067436A1 - Circuit de commande de charge/décharge - Google Patents

Circuit de commande de charge/décharge Download PDF

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Publication number
WO2014067436A1
WO2014067436A1 PCT/CN2013/086060 CN2013086060W WO2014067436A1 WO 2014067436 A1 WO2014067436 A1 WO 2014067436A1 CN 2013086060 W CN2013086060 W CN 2013086060W WO 2014067436 A1 WO2014067436 A1 WO 2014067436A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrically connected
transistor
charging
width modulation
discharging
Prior art date
Application number
PCT/CN2013/086060
Other languages
English (en)
Chinese (zh)
Inventor
冯汉春
秦岭
尹博
戴翔
Original Assignee
恩力能源科技（南通）有限公司
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 恩力能源科技（南通）有限公司 filed Critical 恩力能源科技（南通）有限公司
Publication of WO2014067436A1 publication Critical patent/WO2014067436A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—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
    • H02M3/156—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 with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1582—Buck-boost converters
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter

Definitions

  • the present invention relates to the field of circuit technologies, and in particular, to a charge and discharge control circuit. Background technique
  • the battery module needs to be charged and discharged during use.
  • the current of the external power source flows to the battery module.
  • the current of the battery module flows to the external power device.
  • the charge and discharge control circuit currently applied to the battery module can only control the charging or discharging of the battery module, and cannot adjust the current of charging or discharging, and the use is not flexible enough.
  • Embodiments of the present invention provide a charge and discharge control circuit capable of adjusting a charging or discharging current to a battery module.
  • a charge and discharge control circuit includes a controller, a charging circuit and a discharging circuit, wherein the controller has a first pulse width modulation output end and a second pulse width modulation output end, and the first pulse width modulation output end
  • the charging circuit is electrically connected, the second pulse width modulation output end is electrically connected to the discharging circuit; and the controller controls the external power source to flow by adjusting a duty ratio of the output of the first pulse width modulation output terminal to The current of the charging circuit controls the charging current, and controls the current flowing to the discharging circuit by the battery module by adjusting the duty ratio of the output of the second pulse width modulation output terminal to control the discharging current.
  • a gate of the first transistor is electrically connected to a first pulse width modulation output end of the controller, a source thereof is electrically connected to the external power source, and a drain thereof and an end of the inductor are electrically connected Connected, the other end of the inductor is electrically connected to the cathode of the body diode of the second transistor, and the anode of the body diode of the second transistor is electrically connected to the battery module.
  • a drain of the first transistor is further electrically connected to an anode of the first freewheeling diode of the inductor, and a cathode of the first freewheeling diode is electrically connected to the battery module.
  • the first transistor is a gold oxide half field effect transistor MOSFET.
  • a gate of the second transistor is electrically connected to a second pulse width modulation output end of the controller, and a source thereof is electrically connected to the battery module, and a drain and a drain thereof are One end of the inductor is electrically connected, and the other end of the inductor is electrically connected to a cathode of a body diode of the first transistor, and an anode of the body diode of the first transistor is electrically connected to an external power device.
  • a drain of the second transistor is further electrically connected to an anode of the second freewheeling diode of the inductor, and a cathode of the second freewheeling diode is electrically connected to the external power device.
  • the second transistor is a MOSFET.
  • the charge and discharge control circuit in the embodiment of the present invention can not only switch the charging and discharging of the battery, but also can adjust the current of charging or discharging through the output of the controller. By controlling the charging and discharging currents, the charging and discharging time of the battery module can be adjusted, so that the user can better control the battery and increase the flexibility of use.
  • FIG. 1 is a schematic diagram of a charge and discharge control circuit of the present invention
  • FIG. 2 is a schematic diagram of another charge and discharge control circuit of the present invention. detailed description
  • FIG. 1 a schematic diagram of a charge and discharge control circuit of the present invention is shown.
  • the control circuit can include a controller 11, a charging circuit 12, and a discharging circuit 13.
  • the controller 11 has a first PWM (Pulse Width Modulation) output 111 and a second PWM output 112.
  • the first PWM output 111 is electrically connected to the charging circuit 12, and the second PWM output 112 and the discharging circuit 13 are provided.
  • the controller 11 controls the current of the external power source to the charging circuit 12 by adjusting the duty ratio of the output of the first PWM output terminal 111 to control the charging current by adjusting the second PWM.
  • the duty cycle outputted by the output terminal 112 controls the current flowing from the battery module to the discharge circuit 13 to control the discharge current.
  • the controller 11 can be a control chip of a power management system in a battery, or other control chip with a PWM output.
  • the charge and discharge control circuit in this embodiment can not only switch the charging and discharging of the battery, but also can adjust the magnitude of the current of charging or discharging through the controller output. By controlling the charging and discharging currents, the charging and discharging time of the battery module can be adjusted, so that the user can better control the battery and increase the flexibility of use.
  • FIG. 2 it is a schematic diagram of another charge and discharge control circuit of the present invention.
  • the control circuit may include a controller 21, a charging circuit (indicated by a solid line in the drawing), and a discharging circuit (indicated by a broken line in the drawing).
  • the first PWM output terminal 211 of the controller 21 is electrically connected to the gate of the first transistor S1 221, the source of the first transistor S1 221 is electrically connected to an external power source, and the drain is electrically connected to the inductor L222.
  • the other end of the inductor L222 is electrically connected to the cathode of the body diode 224 of the second transistor S2 223, and the anode of the body diode 224 is electrically connected to the battery module.
  • the first PWM output terminal 211 of the controller 21 When charging, the first PWM output terminal 211 of the controller 21 outputs, the first transistor S1 221 is turned on, the second PWM output terminal 212 is not output, and the second transistor S2 223 is turned off, as indicated by the solid arrow in FIG. 2, the current
  • the positive electrode from the external power source flows to the battery module, passes through the body diode 224 of the second transistor S2 223, the inductor L222, and the first transistor S1 221, and flows back to the negative terminal of the external power source.
  • the controller 21 can control the current flowing through the first transistor S1 221 by adjusting the duty ratio of the output of the first PWM output terminal 211, thereby controlling the charging current.
  • the drain of the first transistor S1 221 is also electrically connected to the anode of the first freewheeling diode D1 225 of the inductor L222, and the cathode of the first freewheeling diode D1 225 is electrically connected to the battery module.
  • the inductor L222 can charge the battery module through a loop composed of the first freewheeling diode D1 225, the battery module and the body diode 224, and release the induced electromotive force generated on the inductor L222.
  • the second PWM output 212 of the controller 21 is electrically connected to the gate of the second transistor S2 223, the source of the second transistor S2 223 is electrically connected to the battery module, and the drain and the end of the inductor L222 Electrically connected, the other end of the inductor L222 is electrically connected to the cathode of the body diode 226 of the first transistor S1 221, and the anode of the body diode 226 is electrically connected to an external electrical device, as shown in FIG.
  • the second PWM output 212 of the controller 21 When discharging, the second PWM output 212 of the controller 21 outputs, the second transistor S2 223 is turned on, the first PWM output terminal 211 is not output, and the first transistor S1 221 is turned off, as indicated by the dotted arrow in FIG.
  • the current flows from the positive electrode of the battery module to the external power device, and passes through the body diode 226 of the first transistor S1 221, and the inductor L222 and the second transistor S2 223 flow back to the negative terminal of the battery module.
  • the controller 21 can control the current flowing through the second transistor S2 223 by adjusting the duty ratio of the output of the second PWM output 212, thereby controlling the discharge current.
  • the drain of the second transistor S2 223 is also electrically connected to the anode of the second freewheeling diode D2 227 of the inductor L222, and the cathode of the second freewheeling diode D2 227 is electrically connected to the external consumer.
  • the inductor L222 can supply power to the external power device through a circuit composed of the second freewheeling diode D2 227, the external power device and the body diode 226, and release the induced electromotive force generated on the inductor L222.
  • the current in the discharge circuit will rise rapidly.
  • the inductor L222 can suppress the short-circuit current, and store the energy of the current in the inductor L222 to reduce the current. Mutation, taking protection measures for the system (such as turning off the first transistor S1 221 and the second transistor S2 223) to win time.
  • the energy of the inductor L222 can be discharged through the circuit composed of the second freewheeling diode D2 227 and the body diode 226 without damaging the inductor L222 itself.
  • the controller 21 When it is necessary to disconnect the battery module and the external circuit (external power supply or external power supply device), the controller 21 only needs to control whether the first PWM output terminal 211 and the second PWM output terminal 212 are not output, then the first transistor S1 221 And the second transistor S2 223 is turned off, and the battery module and the external circuit are disconnected.
  • the first transistor S1 221 and the second transistor S2 223 may each be a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor).
  • MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor
  • the MOSFET's turn-on and turn-off can be used to control the operation and disconnection of the circuit in which it is located.
  • the first transistor S1 221 is used to control the charging circuit
  • the second transistor S2 223 is used to control the discharging circuit.
  • the opening and closing of the two transistors are controlled by the two PWM outputs of the controller 21, respectively.
  • the charge and discharge control circuit in this embodiment can not only switch the charging and discharging of the battery, but also adjust the current of charging or discharging through the controller output, and can adjust the charging and discharging of the battery module by controlling the charging and discharging currents. Time allows the user to better control the battery and increase the flexibility of use. Moreover, the battery can be protected by completely disconnecting the battery from the external circuit through two MOSFET tubes.

Landscapes

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

Abstract

La présente invention se rapporte à un circuit de commande de charge/décharge. Le circuit de commande de charge/décharge comprend un dispositif de commande (21), un circuit de charge et un circuit de décharge. Le dispositif de commande comprend une première extrémité de sortie de modulation d'impulsions en durée (211) et une seconde extrémité de sortie de modulation d'impulsions en durée (212). La première extrémité de sortie de modulation d'impulsions en durée est électriquement raccordée au circuit de charge; la seconde extrémité de sortie de modulation d'impulsions en durée est électriquement raccordée au circuit de décharge. Par ajustement du rapport marques - espaces de la sortie de la première extrémité de sortie de modulation d'impulsions en durée, le dispositif de commande régule un courant électrique qui va d'une source d'énergie externe jusqu'au circuit de charge, ce qui permet de commander un courant de charge et, par ajustement du rapport marques - espaces de la sortie de la seconde extrémité de sortie de modulation d'impulsions en durée, le dispositif de commande régule un courant électrique qui va d'un module de batterie jusqu'au circuit de décharge, ce qui permet de commander un courant de décharge. Le circuit de commande de charge/décharge peut non seulement commuter entre la charge et la décharge d'une batterie mais peut également ajuster l'amplitude du courant de charge ou du courant de décharge par l'intermédiaire de la sortie du dispositif de commande.
PCT/CN2013/086060 2012-10-29 2013-10-28 Circuit de commande de charge/décharge WO2014067436A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2012205620276U CN202978313U (zh) 2012-10-29 2012-10-29 一种充放电控制电路
CN201220562027.6 2012-10-29

Publications (1)

Publication Number Publication Date
WO2014067436A1 true WO2014067436A1 (fr) 2014-05-08

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CN (1) CN202978313U (fr)
WO (1) WO2014067436A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202978313U (zh) * 2012-10-29 2013-06-05 恩力能源科技（南通）有限公司 一种充放电控制电路

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554545A (zh) * 2003-12-22 2004-12-15 西安交通大学 电动车飞轮电池辅助电源系统的构建方法
US20100148587A1 (en) * 2008-12-17 2010-06-17 Alireza Khaligh Multiple-input dc-dc converter
CN102255348A (zh) * 2011-04-06 2011-11-23 清华大学深圳研究生院 一种独立光伏混合储能系统
CN102751718A (zh) * 2012-07-24 2012-10-24 上海交通大学 分布直流电网接口
CN202978313U (zh) * 2012-10-29 2013-06-05 恩力能源科技（南通）有限公司 一种充放电控制电路

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554545A (zh) * 2003-12-22 2004-12-15 西安交通大学 电动车飞轮电池辅助电源系统的构建方法
US20100148587A1 (en) * 2008-12-17 2010-06-17 Alireza Khaligh Multiple-input dc-dc converter
CN102255348A (zh) * 2011-04-06 2011-11-23 清华大学深圳研究生院 一种独立光伏混合储能系统
CN102751718A (zh) * 2012-07-24 2012-10-24 上海交通大学 分布直流电网接口
CN202978313U (zh) * 2012-10-29 2013-06-05 恩力能源科技（南通）有限公司 一种充放电控制电路

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