WO2012055311A1 - Vehicle power supply system and power supply management method thereof - Google Patents

Vehicle power supply system and power supply management method thereof Download PDF

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Publication number
WO2012055311A1
WO2012055311A1 PCT/CN2011/080162 CN2011080162W WO2012055311A1 WO 2012055311 A1 WO2012055311 A1 WO 2012055311A1 CN 2011080162 W CN2011080162 W CN 2011080162W WO 2012055311 A1 WO2012055311 A1 WO 2012055311A1
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WO
WIPO (PCT)
Prior art keywords
battery
current control
power supply
switch
control signal
Prior art date
Application number
PCT/CN2011/080162
Other languages
French (fr)
Chinese (zh)
Inventor
丘为臣
Original Assignee
皆盈绿动能科技股份有限公司
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Publication of WO2012055311A1 publication Critical patent/WO2012055311A1/en

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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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • 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
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • 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
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a power supply system, and more particularly to a power supply system for a vehicle and a power management method thereof.
  • BACKGROUND OF THE INVENTION Lead-acid batteries are the earliest rechargeable batteries. After 150 years of continuous improvement, lead-acid batteries have been successfully commercialized and account for more than half of the rechargeable battery market. In addition to being inexpensive, lead-acid batteries are capable of providing extremely large surge currents and are therefore widely used to start starter motors.
  • the existing automotive power system is only provided with a lead-acid battery to provide power for the vehicle to start and other power for the electronic device after startup.
  • a lead-acid battery is no longer available.
  • lead-acid batteries also have problems of large size and weight.
  • An embodiment of the present invention provides a power supply system for a vehicle, including: a first battery and a second battery, a first circuit detecting unit and a second circuit detecting unit, and a controller.
  • the first battery and the second battery are respectively coupled between the power supply and the circuit load to receive power of the power supply or provide power to the circuit load.
  • the first circuit detecting unit and the second circuit detecting unit are respectively coupled to the first battery and the second battery for detecting the degree of charge and discharge of the first battery and the second battery.
  • the controller generates a plurality of control signals according to the degree of charge and discharge of the first battery and the second battery, for respectively controlling the first switch, the second switch, and the third switch, thereby controlling charging and discharging of the first battery and the second battery .
  • An embodiment of the present invention provides a power management method, which is applicable to a power supply system for a vehicle.
  • the power management method includes: starting a discharge procedure of the first battery and the second battery; and detecting a load on the circuit of the first battery and the second battery a degree of discharge; determining whether the power supplied by the first battery is less than a lower limit; when the power supplied by the first battery is less than a lower limit, stopping discharge of the first battery to the circuit load; starting charging of the first battery and the second battery a program; detecting a degree of charging of the first battery and the second battery by the power supply; determining whether the power supplied by the first battery and the second battery is greater than a first upper limit value and a second upper limit value; and when the first battery and the first battery When the power supplied by the two batteries is greater than the first upper limit value and the second upper limit value, the charging of the first battery and the second battery by the power supply is stopped.
  • FIG. 1 is a perspective view showing the appearance of a battery for a vehicle according to an embodiment of the present invention
  • FIG. 2 is a circuit block diagram of a power supply system for a vehicle according to an embodiment of the present invention
  • FIG. 3 is a circuit block diagram of a power supply system for a vehicle according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a power management method according to an embodiment of the present invention.
  • a vehicle power supply system 100 includes a controller 10, a first circuit detecting unit 12a and a second circuit detecting unit 12b, a first battery 16a and a second battery 16b, a power supply 18, and a circuit. Load 19, and switches SW1, SW2, and SW3.
  • the battery for a vehicle includes a first battery 16a and a second battery 16b, wherein the first battery 16a is a lithium battery (LIB), and the second battery is a lead acid battery.
  • Lithium battery includes lithium iron phosphate Pool (LiFePC ⁇ or lithium cobalt battery (LiCoC ⁇ , but not limited to this.
  • the first battery 16a and the second battery 16b are respectively coupled between the power supply 18 and the circuit load 19 for receiving power from the power supply 18 or supplying power to the circuit load 19 during charging or discharging operations.
  • the first circuit detecting unit 12a and the second circuit detecting unit 12b are respectively coupled to the first battery 16a and the second battery 16b for detecting the degree of charge and discharge of the first battery 16a and the second battery 16b.
  • the controller 10 generates a plurality of control signals according to the charging/discharging operation for respectively controlling the switches SW1, SW2 and SW3; further, the controller 10 generates a plurality of detections according to the first circuit detecting unit 12a and the second circuit detecting unit 12b. The signal thereby controls charging and discharging of the first battery 16a and the second battery 16b.
  • the switch SW1 is connected between the power supply 18 and the first node N1, and the first node N1 is coupled to the circuit load 19 and the first circuit detecting unit 12a.
  • the switch SW3 is connected between the circuit load 19 and the second node N2, and the second node N2 is coupled to the power supply 18 and the second circuit detecting unit 12bo.
  • the switch SW2 is connected between the first node N1 and the second node N2.
  • the vehicle power supply system 100 further includes a first proportional adjustment current control switch 14a and a second proportional adjustment current control switch 14b.
  • the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b respectively control charging and discharging of the first battery 16a and the second battery 16b according to the plurality of current control signals generated by the controller 10, wherein the first ratio
  • the regulation current control switch 14a is connected between the first circuit detection unit 12a and the first battery 16a
  • the second proportional adjustment current control switch 14b is connected between the second circuit detection unit 12b and the second battery 16b.
  • the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b have different ratios of opening (or off:) according to the current control signal generated by the controller 10. To the extent that the current flowing through it is controlled.
  • the switches SW1, SW2, and SW3 are turned off, turned on, and turned on according to the control signals SW1 - off, SW2_on, and the control signal SW3 - respectively, and the first ratio Regulating current control switch 14a and second proportional regulating current control switch 14b according to current control signal discharge_on_#1 and discrage-on-#2 And being turned on, causing the first battery 16a and the second battery 16b to discharge the circuit load 19, wherein the discharge, on and #1 in the current control signal dischrage_on_#1 respectively represent "discharge program", "on” and "” respectively.
  • the first proportional adjustment current control switch 14a Therefore, the current control signal dischrage_on_#1 represents the current control signal of "the first proportional regulation current control switch 14a is turned on during the discharge process", and the remaining current control signals follow this naming rule, in order to simplify the explanation, No longer.
  • the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b are fully (g ⁇ 100%) turned on. of. In other embodiments, if the vehicle power system 100 does not need to use the maximum power source at startup, the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b are partially turned on, for example The first proportional adjustment current control switch 14a is turned on at a ratio of 90%, and the second proportional adjustment current control switch 14b is turned on at a ratio of 80%, but not limited thereto.
  • the power consumption of the circuit load 19 is reduced. Therefore, when the first circuit detecting unit 12a detects that the power supplied from the first battery 16a is less than the lower limit value, the first circuit detecting unit 12a generates the detection signal lower_detected_1 to the controller 10. Next, the controller 10 generates a current control signal discharge_off_#1 according to the detection signal lower_detected_#1. Finally, the first proportional adjustment current control switch 14a is completely turned off according to the current control signal discharge_off - #1, so that the first battery 16a stops discharging the circuit load 19.
  • the second proportional adjustment current control switch 14b remains in the on state.
  • the first proportional adjustment current control switch 14a is partially closed, and the first battery 16a and the second battery 16b collectively provide power to the circuit load 19.
  • the present invention achieves the purpose of regulating power by providing a mechanism for circuit detection and proportional turn-on (or off:) to each battery. After the first battery 16a and the second battery 16b continue to discharge the circuit load 19 for a period of time (or after the first battery 16a and the second battery 16b have been used multiple times:), the first battery 16a and the second battery 16b are supplied.
  • the power is also gradually reduced, which means that the first battery 16a and the second battery 16b need to be charged.
  • the switches SW1, SW2, and SW3 are turned on, turned on, and off according to the control signals SW1_on, SW2_on, and SW3-off, respectively, and the first proportional adjustment is performed.
  • the current control switch 14a and the second proportional adjustment current control switch 14b are turned on according to the current control signals charge_on_#1 and charge_on_#2, so that the power supply 18 pairs the first battery 16a and the second battery 16b. Charging.
  • the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b are fully turned on 100% :).
  • the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b are partially turned on, for example, The charging time of one battery 16a is shorter than the charging time of the second battery 16b, therefore, the first proportional adjustment current control switch 14a is turned on at a ratio of 80%, and the second proportional adjustment current control switch 14b is turned on at a ratio of 90%.
  • the first battery 16a and the second battery 16b can be charged simultaneously, but not limited thereto.
  • the first circuit detecting unit 12a detects that the power supplied from the first battery 16a is greater than the upper limit value, the first circuit detecting unit 12a generates the detection signal upper_detected_#1 to the controller 10.
  • the first proportional adjustment current control switch 14a is turned off according to the current control signal charge_off_#1, so that the power supply 18 stops charging the first battery 16a.
  • the second circuit detecting unit 12b detects that the power supplied by the second battery 16b is greater than the upper limit charge_off_#2, the second circuit detecting unit 12b generates the detection signal upper_detected_#2 to the controller 10.
  • the second proportional adjustment current control switch 14b is turned off according to the current control signal charge_off_#2, so that the power supply 18 stops charging the second battery 16b.
  • the first proportional adjustment current control switch 14a and the second ratio The regulating current control switch 14b is completely closed, but not limited thereto.
  • step S1 the discharging process of the first battery 16a and the second battery 16b is started, wherein the step S1 comprises: closing the switch SW1 according to the control signals SW1_off, SW2_on and SW3_on generated by the controller 10, respectively. Turning on the switch SW2 and turning on the switch SW3; and proportionally turning on the first proportional adjustment current control switch 14a and the second according to the current control signals discharge_on_#1 and discharge_on_#2 generated by the controller 10, respectively The current control switch 14b is proportionally regulated.
  • step S2 the control signals discharge_on_#1 and discharge_on_#2 generated by the controller 10.
  • step S2 detecting the degree of discharge of the first battery 16a and the second battery 16b to the circuit load 19, wherein the step S2 comprises: detecting the power supplied by the first battery 16a and the second battery 16b, respectively; and according to the detection result, A plurality of detection signals are generated to the controller 10.
  • the flow proceeds to judgment step S3.
  • step S3 it is judged whether or not the power supplied from the first battery 16a is less than the lower limit value. If so, the flow proceeds to step S4. If no, the process returns to step S2.
  • step S4 when the power supplied by the first battery 16a is less than the lower limit value, the discharge of the circuit load 19 by the first battery 16a is stopped, wherein the step S4 comprises: discharging the current control signal according to the controller 10 discharge_off- #1, The first proportional adjustment current control switch 14a is turned off proportionally.
  • step S5 when the power supplied by the first battery 16a is less than the lower limit value, the discharge of the circuit load 19 by the first battery 16a is stopped, wherein the step S4 comprises: discharging the current control signal according to the controller 10 discharge_off- #1, The first proportional adjustment current control switch 14a is turned off proportionally. The flow proceeds to step S5.
  • step S5 the charging process of the first battery 16a and the second battery 16b is started, wherein the step S5 comprises: respectively opening the switch SW1 according to the control signals SW1-on, SW2-on and SW3-off generated by the controller 10 Turning on the switch SW2 and turning off the switch SW3; and according to the current control signals charge_on_#1 and charge_on_#2 generated by the controller 10, respectively proportionally turning on the first proportional adjustment current control switch 14a and the second The current control switch 14b is proportionally regulated.
  • step S6 the charging process of the first battery 16a and the second battery 16b is started, wherein the step S5 comprises: respectively opening the switch SW1 according to the control signals SW1-on, SW2-on and SW3-off generated by the controller 10 Turning on the switch SW2 and turning off the switch SW3; and according to the current control signals charge_on_#1 and charge_on_#2 generated by the controller 10, respectively proportionally turning on the first proportional adjustment current control switch 14a and the second The current control switch 14b is proportion
  • step S6 detecting the degree of charging of the first battery 16a and the second battery 16b by the power supply 18, wherein the step S6 comprises: detecting the power supplied by the first battery 16a and the second battery 16b, respectively; and according to the detection result A plurality of detection signals are generated to the controller 10.
  • the process proceeds to judgment Step S7.
  • step S7 it is judged whether the power supplied from the first battery 16a and the second battery 16b is greater than the first upper limit value and the second upper limit value. If so, the flow proceeds to step S8. If no, the process returns to step S6.
  • step S8 when the power supplied from the first battery 16a and the second battery 16b is greater than the first upper limit value and the second upper limit value, the charging of the first battery 16a and the second battery 16b by the power supply 18 is stopped.
  • Lithium-based batteries have the advantages of large discharge power and small volume (light weight:), while lead-acid batteries have the advantages of stability and low cost.
  • the advantages of lithium-based batteries and lead-acid batteries are Can be balanced.
  • the present invention achieves the purpose of regulating power by providing a mechanism for circuit detection and proportional turn-on (or off:) to each battery.

Abstract

A vehicle power supply system and power supply management method thereof, wherein the vehicle power supply system comprises a first battery and a second battery, a first circuit detecting unit and a second circuit detecting unit, and a controller. The first battery and the second battery are coupled respectively between a power supply device and a circuit load, to receive power from the power supply device or to provide power to the circuit load. The first circuit detecting unit and the second circuit detecting unit are coupled respectively to the first battery and the second battery, to detect the charging/discharging level of the first battery and the second battery. According to the charging/discharging level of the first battery and the second battery, the controller generates a plurality of control signals to control respectively a first switch, a second switch and a third switch, thereby controlling the charging/discharging of the first battery and second battery.

Description

车用电源系统与其电源管理方法 技术领域 本发明有关于电源系统， 特别有关于车用电源系统与其电源管理方法。 背景技术 铅酸电池 (Lead-acid battery)是最早出现的可充电电池， 经过 150年来不 断地改良发展， 铅酸电池已经成功地商品化并占据可充电电池市场的一半以 上。 除了成本低廉之外， 铅酸电池能够提供极大的突波电流 (surge current), 因此广泛地用于启动汽车启动马达 (； starter motor)。  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply system, and more particularly to a power supply system for a vehicle and a power management method thereof. BACKGROUND OF THE INVENTION Lead-acid batteries are the earliest rechargeable batteries. After 150 years of continuous improvement, lead-acid batteries have been successfully commercialized and account for more than half of the rechargeable battery market. In addition to being inexpensive, lead-acid batteries are capable of providing extremely large surge currents and are therefore widely used to start starter motors.
现有的汽车电源系统仅设置有一个铅酸电池， 用以提供汽车启动时的电 源， 以及启动后其他电子装置的电源。 然而近年来， 随着汽车工业的演进， 汽车配备越来越多具有高消耗功率的装置， 例如空调、 音响、 电子动力辅助 转向系统、 防锁死煞车系统或卫星导航系统。 因此， 一个铅酸电池已经不敷 使用。 此外， 铅酸电池也有体积大、 重量大的问题。  The existing automotive power system is only provided with a lead-acid battery to provide power for the vehicle to start and other power for the electronic device after startup. However, in recent years, with the evolution of the automotive industry, automobiles are equipped with more and more devices with high power consumption, such as air conditioners, audio, electronic power assisted steering systems, anti-lock braking systems or satellite navigation systems. Therefore, a lead-acid battery is no longer available. In addition, lead-acid batteries also have problems of large size and weight.
因此， 亟需一种车用电源系统， 用以改良现有车用电源系统的问题。 发明内容 本发明的一实施例提供一种车用电源系统， 包括： 第一电池与第二电 池、 第一电路检测单元与第二电路检测单元以及控制器。 第一电池与第二电 池分别耦接于电源供应器与电路负载之间， 用以接收电源供应器的电源或提 供电源予电路负载。 第一电路检测单元与第二电路检测单元分别耦接至第一 电池与第二电池， 用以检测第一电池与第二电池的充放电程度。 控制器根据 第一电池与第二电池的充放电程度而产生多个控制信号， 用以分别控制第一 开关、 第二开关以及第三开关， 藉此控制第一电池与第二电池的充放电。 本发明的一实施例提供一种电源管理方法， 适用于车用电源系统， 电源 管理方法包括： 启始第一电池与第二电池的放电程序； 检测第一电池与第二 电池对电路负载的放电程度； 判断第一电池供应的功率是否小于下限值； 当 第一电池供应的功率小于下限值时， 停止第一电池对电路负载的放电； 启始 第一电池与第二电池的充电程序； 检测电源供应器对第一电池与第二电池的 充电程度； 判断第一电池与第二电池供应的功率是否大于第一上限值与第二 上限值； 以及当第一电池与第二电池供应的功率大于第一上限值与第二上限 值时， 停止电源供应器对第一电池与第二电池的充电。 Therefore, there is a need for a vehicle power system to improve the problems of existing vehicle power systems. SUMMARY OF THE INVENTION An embodiment of the present invention provides a power supply system for a vehicle, including: a first battery and a second battery, a first circuit detecting unit and a second circuit detecting unit, and a controller. The first battery and the second battery are respectively coupled between the power supply and the circuit load to receive power of the power supply or provide power to the circuit load. The first circuit detecting unit and the second circuit detecting unit are respectively coupled to the first battery and the second battery for detecting the degree of charge and discharge of the first battery and the second battery. The controller generates a plurality of control signals according to the degree of charge and discharge of the first battery and the second battery, for respectively controlling the first switch, the second switch, and the third switch, thereby controlling charging and discharging of the first battery and the second battery . An embodiment of the present invention provides a power management method, which is applicable to a power supply system for a vehicle. The power management method includes: starting a discharge procedure of the first battery and the second battery; and detecting a load on the circuit of the first battery and the second battery a degree of discharge; determining whether the power supplied by the first battery is less than a lower limit; when the power supplied by the first battery is less than a lower limit, stopping discharge of the first battery to the circuit load; starting charging of the first battery and the second battery a program; detecting a degree of charging of the first battery and the second battery by the power supply; determining whether the power supplied by the first battery and the second battery is greater than a first upper limit value and a second upper limit value; and when the first battery and the first battery When the power supplied by the two batteries is greater than the first upper limit value and the second upper limit value, the charging of the first battery and the second battery by the power supply is stopped.
锂系电池具有放电功率大与体积小 (重量轻:)的优点， 而铅酸电池具有稳 定与成本低廉的优点， 藉由本发明揭露的车用电源系统， 锂系电池与铅酸电 池的优点便得以兼顾。 此外， 本发明藉由提供电路检测与比例式开启 (或关 闭:)的机制予每一个电池， 来达到调节功率的目的。 附图说明 图 1为本发明实施例的车用电池的外观立体图；  Lithium-based batteries have the advantages of large discharge power and small volume (light weight:), while lead-acid batteries have the advantages of stability and low cost. With the vehicle power supply system disclosed by the present invention, the advantages of lithium-based batteries and lead-acid batteries are Can be balanced. In addition, the present invention achieves the purpose of regulating power by providing a mechanism for circuit detection and proportional turn-on (or off:) to each battery. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a perspective view showing the appearance of a battery for a vehicle according to an embodiment of the present invention;
图 2为本发明实施例的车用电源系统的电路方块图；  2 is a circuit block diagram of a power supply system for a vehicle according to an embodiment of the present invention;
图 3为本发明实施例的车用电源系统的电路方块图；  3 is a circuit block diagram of a power supply system for a vehicle according to an embodiment of the present invention;
图 4为本发明实施例的电源管理方法的流程图。  FIG. 4 is a flowchart of a power management method according to an embodiment of the present invention.
附图标号：  Reference number:
100 车用电源系统  100 car power system
10 控制器  10 controller
12a 第一电路检测单元  12a first circuit detection unit
12b 第二电路检测单元  12b second circuit detection unit
1 a 第一比例式调节电流控制幵  1 a First proportional regulation current control幵
14b 第二比例式调节电流控制幵  14b second proportional regulation current control幵
16a 第一电池 16b 第二电池 16a first battery 16b second battery
18 电源供应  18 power supply
19 电路负载  19 circuit load
Nl 第一节点  Nl first node
N2 第二节点  N2 second node
SW1 、 SW2 、 SW3 幵关  SW1, SW2, SW3
SW1— on、 SW1— off 控制信号  SW1—on, SW1—off control signal
SW2_on  SW2_on
SW3— on 、 SW3— off ί工巾 U I口^ J  SW3— on , SW3 — off ί towel U I port ^ J
discharge— on— #1 电流控帘|  Discharge — on — #1 current control curtain|
discharge— on— #2 电流控帘|  Discharge — on — #2 current control curtain|
discharge— off— # 1 电流控帘|  Discharge— off— # 1 current control curtain|
charge— on— #1 电流控帘|  Charge— on— #1 current control curtain|
charge— on— #2 电流控  Charge— on — #2 current control
charge— off— #1 电流控帘|  Charge— off— #1 current control curtain|
charge— off— #2 电流控帘|  Charge— off— #2 current control curtain|
lower— detected— # 1  Lower— detected— # 1
upper— detected— # 1  Upper— detected— # 1
upper— detected— #2
Figure imgf000005_0001
具体实施方式 参阅图 1及图 2,车用电源系统 100包括控制器 10、 第一电路检测单元 12a与第二电路检测单元 12b、 第一电池 16a与第二电池 16b、 电源供应器 18、 电路负载 19， 以及开关 SW1、 SW2与 SW3。 如图 1， 在本实施例中， 车用电池包括第一电池 16a及第二电池 16b， 其中第一电池 16a为锂系电池 (Lithium-ion battery, LIB), 第二电池为铅酸电池， 锂系电池包括磷酸锂铁电 池 (LiFePC^或锂钴电池 (LiCoC^， 但并非以此为限。 Upper— detected— #2
Figure imgf000005_0001
1 and 2, a vehicle power supply system 100 includes a controller 10, a first circuit detecting unit 12a and a second circuit detecting unit 12b, a first battery 16a and a second battery 16b, a power supply 18, and a circuit. Load 19, and switches SW1, SW2, and SW3. As shown in FIG. 1, in the embodiment, the battery for a vehicle includes a first battery 16a and a second battery 16b, wherein the first battery 16a is a lithium battery (LIB), and the second battery is a lead acid battery. Lithium battery includes lithium iron phosphate Pool (LiFePC^ or lithium cobalt battery (LiCoC^, but not limited to this.
第一电池 16a与第二电池 16b分别耦接于电源供应器 18与电路负载 19 之间， 在充电或放电操作时用以接收电源供应器 18的电源或提供电源予电 路负载 19。 第一电路检测单元 12a与第二电路检测单元 12b分别耦接至第一 电池 16a与第二电池 16b， 用以检测第一电池 16a与第二电池 16b的充放电 程度。 控制器 10根据充 /放电操作而产生多个控制信号， 用以分别控制开关 SW1、 SW2与 SW3; 此外， 控制器 10根据第一电路检测单元 12a与第二电 路检测单元 12b产生的多个检测信号， 藉此控制第一电池 16a与第二电池 16b的充放电。  The first battery 16a and the second battery 16b are respectively coupled between the power supply 18 and the circuit load 19 for receiving power from the power supply 18 or supplying power to the circuit load 19 during charging or discharging operations. The first circuit detecting unit 12a and the second circuit detecting unit 12b are respectively coupled to the first battery 16a and the second battery 16b for detecting the degree of charge and discharge of the first battery 16a and the second battery 16b. The controller 10 generates a plurality of control signals according to the charging/discharging operation for respectively controlling the switches SW1, SW2 and SW3; further, the controller 10 generates a plurality of detections according to the first circuit detecting unit 12a and the second circuit detecting unit 12b. The signal thereby controls charging and discharging of the first battery 16a and the second battery 16b.
开关 SW1连接于电源供应器 18与第一节点 N1之间， 第一节点 N1耦接 至电路负载 19与第一电路检测单元 12a。 开关 SW3连接于电路负载 19与第 二节点 N2之间， 第二节点 N2耦接至电源供应器 18与第二电路检测单元 12bo 开关 SW2连接于第一节点 N1与第二节点 N2之间。  The switch SW1 is connected between the power supply 18 and the first node N1, and the first node N1 is coupled to the circuit load 19 and the first circuit detecting unit 12a. The switch SW3 is connected between the circuit load 19 and the second node N2, and the second node N2 is coupled to the power supply 18 and the second circuit detecting unit 12bo. The switch SW2 is connected between the first node N1 and the second node N2.
车用电源系统 100更包括第一比例式调节电流控制开关 14a与第二比例 式调节电流控制开关 14b。 第一比例式调节电流控制开关 14a与第二比例式 调节电流控制开关 14b根据控制器 10产生的多个电流控制信号来分别控制 第一电池 16a与第二电池 16b的充放电， 其中第一比例式调节电流控制开关 14a连接于第一电路检测单元 12a与第一电池 16a之间， 并且第二比例式调 节电流控制开关 14b连接于第二电路检测单元 12b与第二电池 16b之间。 要 注意的是， 在本实施例中， 第一比例式调节电流控制开关 14a与第二比例式 调节电流控制开关 14b根据控制器 10产生的电流控制信号而具有不同比例 的开启 (或关闭:)程度， 藉此控制流经其上的电流。  The vehicle power supply system 100 further includes a first proportional adjustment current control switch 14a and a second proportional adjustment current control switch 14b. The first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b respectively control charging and discharging of the first battery 16a and the second battery 16b according to the plurality of current control signals generated by the controller 10, wherein the first ratio The regulation current control switch 14a is connected between the first circuit detection unit 12a and the first battery 16a, and the second proportional adjustment current control switch 14b is connected between the second circuit detection unit 12b and the second battery 16b. It should be noted that, in this embodiment, the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b have different ratios of opening (or off:) according to the current control signal generated by the controller 10. To the extent that the current flowing through it is controlled.
当电源系统 100进行放电操作时， 开关 SW1、 SW2以及 SW3分别根据 控制信号 SW1— off、 SW2_on以及控制信号 SW3— on而被关闭 (turns ofi)、 开 启 (turns on)以及开启， 并且第一比例式调节电流控制开关 14a与第二比例式 调节电流控制开关 14b根据电流控制信号 discharge— on— #1与 dischrage— on— #2 而被开启， 使得第一电池 16a与第二电池 16b对电路负载 19放电， 其中电 流控制信号 dischrage— on— #1中的 discharge、 on与 #1分别表示"放电程序"、 "开启 "与"第一比例式调节电流控制开关 14a"。 因此， 电流控制信号 dischrage— on— #1表示"在放电程序中， 使得第一比例式调节电流控制开关 14a 开启"的电流控制信号， 其余的电流控制信号均依循此命名规则， 为了简化 说明， 不再赘述。 When the power system 100 performs a discharging operation, the switches SW1, SW2, and SW3 are turned off, turned on, and turned on according to the control signals SW1 - off, SW2_on, and the control signal SW3 - respectively, and the first ratio Regulating current control switch 14a and second proportional regulating current control switch 14b according to current control signal discharge_on_#1 and discrage-on-#2 And being turned on, causing the first battery 16a and the second battery 16b to discharge the circuit load 19, wherein the discharge, on and #1 in the current control signal dischrage_on_#1 respectively represent "discharge program", "on" and "" respectively. The first proportional adjustment current control switch 14a". Therefore, the current control signal dischrage_on_#1 represents the current control signal of "the first proportional regulation current control switch 14a is turned on during the discharge process", and the remaining current control signals follow this naming rule, in order to simplify the explanation, No longer.
为了让车用电源系统 100在启动操作时具有最大电源来启动其电路负载 19， 第一比例式调节电流控制开关 14a与第二比例式调节电流控制开关 14b 被完全地 (g卩 100%)开启的。 在其他实施例中， 若车用电源系统 100在启动时 不需要使用到最大电源， 则第一比例式调节电流控制开关 14a与第二比例式 调节电流控制开关 14b是被部分地开启的， 例如以 90%的比例开启第一比例 式调节电流控制开关 14a， 并且以 80%的比例开启第二比例式调节电流控制 开关 14b， 但并非以此为限。  In order for the vehicle power supply system 100 to have its maximum power supply to activate its circuit load 19 during startup operation, the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b are fully (g卩100%) turned on. of. In other embodiments, if the vehicle power system 100 does not need to use the maximum power source at startup, the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b are partially turned on, for example The first proportional adjustment current control switch 14a is turned on at a ratio of 90%, and the second proportional adjustment current control switch 14b is turned on at a ratio of 80%, but not limited thereto.
在电路负载 19启动之后 (例如启动马达被启动之后：)， 电路负载 19的消 耗功率便会减少。 因此， 当第一电路检测单元 12a检测出第一电池 16a供应 的功率小于下限值时， 第一电路检测单元 12a 产生检测信号 lower— detected— #1 予控制器 10。 接着， 控制器 10 根据检测信号 lower— detected— #1产生电流控制信号 discharge— off— #1。 最后， 第一比例式调 节电流控制开关 14a根据电流控制信号 discharge— off— #1而被完全地关闭， 使 得第一电池 16a停止对电路负载 19放电。  After the circuit load 19 is started (for example, after the starter motor is started:), the power consumption of the circuit load 19 is reduced. Therefore, when the first circuit detecting unit 12a detects that the power supplied from the first battery 16a is less than the lower limit value, the first circuit detecting unit 12a generates the detection signal lower_detected_1 to the controller 10. Next, the controller 10 generates a current control signal discharge_off_#1 according to the detection signal lower_detected_#1. Finally, the first proportional adjustment current control switch 14a is completely turned off according to the current control signal discharge_off - #1, so that the first battery 16a stops discharging the circuit load 19.
在第一比例式调节电流控制开关 14a被关闭之后， 为了继续提供电源予 其他的车用装置 (例如音响、 空调和车灯)， 第二比例式调节电流控制开关 14b仍然维持开启的状态。 在其他实施中， 第一比例式调节电流控制开关 14a被部分地关闭， 由第一电池 16a和第二电池 16b共同提供电源予电路负 载 19。 本发明藉由提供电路检测与比例式开启 (或关闭:)的机制予每一个电 池， 来达到调节功率的目的。 随着第一电池 16a和第二电池 16b对电路负载 19持续放电一段时间之 后 (或第一电池 16a和第二电池 16b经过多次使用之后：)， 第一电池 16a和第 二电池 16b供应的功率也逐渐减少， 这表示第一电池 16a和第二电池 16b需 要充电。 当车用电源系统 100进行充电操作时， 如图 3所示， 开关 SW1、 SW2与 SW3分别根据控制信号 SW1— on、 SW2_on以及 SW3— off而被开启、 开启以及关闭， 并且第一比例式调节电流控制开关 14a与第二比例式调节电 流控制开关 14b根据电流控制信号 charge— on— #1与 charge— on— #2而被开启， 使得电源供应器 18对第一电池 16a与第二电池 16b充电。 After the first proportional adjustment current control switch 14a is turned off, in order to continue to supply power to other vehicle devices (such as audio, air conditioners, and lights), the second proportional adjustment current control switch 14b remains in the on state. In other implementations, the first proportional adjustment current control switch 14a is partially closed, and the first battery 16a and the second battery 16b collectively provide power to the circuit load 19. The present invention achieves the purpose of regulating power by providing a mechanism for circuit detection and proportional turn-on (or off:) to each battery. After the first battery 16a and the second battery 16b continue to discharge the circuit load 19 for a period of time (or after the first battery 16a and the second battery 16b have been used multiple times:), the first battery 16a and the second battery 16b are supplied. The power is also gradually reduced, which means that the first battery 16a and the second battery 16b need to be charged. When the vehicle power supply system 100 performs a charging operation, as shown in FIG. 3, the switches SW1, SW2, and SW3 are turned on, turned on, and off according to the control signals SW1_on, SW2_on, and SW3-off, respectively, and the first proportional adjustment is performed. The current control switch 14a and the second proportional adjustment current control switch 14b are turned on according to the current control signals charge_on_#1 and charge_on_#2, so that the power supply 18 pairs the first battery 16a and the second battery 16b. Charging.
为了让车用电源系统 100尽速完成充电， 第一比例式调节电流控制开关 14a与第二比例式调节电流控制开关 14b是被完全地 卩 100%：)开启的。 在其 他实施例中， 若车用电源系统 100被允许具有较长的充电时间， 则第一比例 式调节电流控制开关 14a与第二比例式调节电流控制开关 14b被部分地开启 的， 又例如第一电池 16a的充电时间短于第二电池 16b的充电时间， 因此， 以 80%的比例开启第一比例式调节电流控制开关 14a， 并且以 90%的比例开 启第二比例式调节电流控制开关 14b， 使得第一电池 16a与第二电池 16b能 够同时完成充电， 但并非以此为限。  In order for the vehicle power supply system 100 to complete charging as soon as possible, the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b are fully turned on 100% :). In other embodiments, if the vehicle power supply system 100 is allowed to have a longer charging time, the first proportional adjustment current control switch 14a and the second proportional adjustment current control switch 14b are partially turned on, for example, The charging time of one battery 16a is shorter than the charging time of the second battery 16b, therefore, the first proportional adjustment current control switch 14a is turned on at a ratio of 80%, and the second proportional adjustment current control switch 14b is turned on at a ratio of 90%. The first battery 16a and the second battery 16b can be charged simultaneously, but not limited thereto.
在第一电池 16a与第二电池 16b充电即将完成时， 第一电池 16a和第二 电池 16b供应的功率也逐渐增加。 因此， 当第一电路检测单元 12a检测出第 一电池 16a供应的功率大于上限值时， 第一电路检测单元 12a产生检测信号 upper— detected— #1予控制器 10。 接着， 第一比例式调节电流控制开关 14a根 据电流控制信号 charge— off— #1而被关闭， 使得电源供应器 18停止对第一电 池 16a充电。 当第二电路检测单元 12b测出第二电池 16b供应的功率大于上 限值 charge— off— #2 时， 第二电路检测单元 12b 产生检测信号 upper— detected— #2予控制器 10。 接着， 第二比例式调节电流控制开关 14b根 据电流控制信号 charge— off— #2而被关闭， 使得电源供应器 18停止对第二电 池 16b充电。 在本实施例中， 第一比例式调节电流控制开关 14a与第二比例 式调节电流控制开关 14b被完全地关闭的， 但并非以此为限。 When the charging of the first battery 16a and the second battery 16b is about to be completed, the power supplied from the first battery 16a and the second battery 16b is also gradually increased. Therefore, when the first circuit detecting unit 12a detects that the power supplied from the first battery 16a is greater than the upper limit value, the first circuit detecting unit 12a generates the detection signal upper_detected_#1 to the controller 10. Next, the first proportional adjustment current control switch 14a is turned off according to the current control signal charge_off_#1, so that the power supply 18 stops charging the first battery 16a. When the second circuit detecting unit 12b detects that the power supplied by the second battery 16b is greater than the upper limit charge_off_#2, the second circuit detecting unit 12b generates the detection signal upper_detected_#2 to the controller 10. Next, the second proportional adjustment current control switch 14b is turned off according to the current control signal charge_off_#2, so that the power supply 18 stops charging the second battery 16b. In this embodiment, the first proportional adjustment current control switch 14a and the second ratio The regulating current control switch 14b is completely closed, but not limited thereto.
参阅图 4,在歩骤 Sl， 启始第一电池 16a与第二电池 16b的放电程序， 其 中歩骤 S1 包括： 根据控制器 10产生的控制信号 SW1— off、 SW2_on与 SW3_on, 分别关闭开关 SW1、 开启开关 SW2并且开启开关 SW3 ; 以及根 据控制器 10产生的电流控制信号 discharge— on— #1与 discharge— on— #2， 分别 比例式地开启第一比例式调节电流控制开关 14a与第二比例式调节电流控制 开关 14b。 流程前进至歩骤 S2。  Referring to FIG. 4, in step S1, the discharging process of the first battery 16a and the second battery 16b is started, wherein the step S1 comprises: closing the switch SW1 according to the control signals SW1_off, SW2_on and SW3_on generated by the controller 10, respectively. Turning on the switch SW2 and turning on the switch SW3; and proportionally turning on the first proportional adjustment current control switch 14a and the second according to the current control signals discharge_on_#1 and discharge_on_#2 generated by the controller 10, respectively The current control switch 14b is proportionally regulated. The flow proceeds to step S2.
在歩骤 S2, 检测第一电池 16a与第二电池 16b对电路负载 19的放电程 度， 其中歩骤 S2包括： 分别检测第一电池 16a与第二电池 16b供应的功 率； 以及根据检测的结果， 产生多个检测信号予控制器 10。 流程前进至判断 歩骤 S3。  In step S2, detecting the degree of discharge of the first battery 16a and the second battery 16b to the circuit load 19, wherein the step S2 comprises: detecting the power supplied by the first battery 16a and the second battery 16b, respectively; and according to the detection result, A plurality of detection signals are generated to the controller 10. The flow proceeds to judgment step S3.
在判断歩骤 S3， 判断第一电池 16a供应的功率是否小于下限值。 若是， 流程前进至歩骤 S4。 若否， 流程退回歩骤 S2。  At decision step S3, it is judged whether or not the power supplied from the first battery 16a is less than the lower limit value. If so, the flow proceeds to step S4. If no, the process returns to step S2.
在歩骤 S4 , 当第一电池 16a供应的功率小于下限值时， 停止第一电池 16a对电路负载 19的放电， 其中歩骤 S4包括： 根据控制器 10产生的电流控 制信号 discharge— off— #1， 比例式地关闭第一比例式调节电流控制开关 14a。 流程前进至歩骤 S5。  In step S4, when the power supplied by the first battery 16a is less than the lower limit value, the discharge of the circuit load 19 by the first battery 16a is stopped, wherein the step S4 comprises: discharging the current control signal according to the controller 10 discharge_off- #1, The first proportional adjustment current control switch 14a is turned off proportionally. The flow proceeds to step S5.
在歩骤 S5 , 启始第一电池 16a与第二电池 16b的充电程序， 其中歩骤 S5包括： 根据控制器 10产生的控制信号 SW1— on、 SW2— on与 SW3— off而分 别开启开关 SW1、 开启开关 SW2以及关闭开关 SW3 ; 以及根据控制器 10 产生的电流控制信号 charge— on— #1与 charge— on— #2， 分别比例式地开启第一 比例式调节电流控制开关 14a与第二比例式调节电流控制开关 14b。 流程前 进至歩骤 S6。  In step S5, the charging process of the first battery 16a and the second battery 16b is started, wherein the step S5 comprises: respectively opening the switch SW1 according to the control signals SW1-on, SW2-on and SW3-off generated by the controller 10 Turning on the switch SW2 and turning off the switch SW3; and according to the current control signals charge_on_#1 and charge_on_#2 generated by the controller 10, respectively proportionally turning on the first proportional adjustment current control switch 14a and the second The current control switch 14b is proportionally regulated. The process advances to step S6.
在歩骤 S6, 检测电源供应器 18对第一电池 16a与第二电池 16b的充电 程度， 其中歩骤 S6包括： 分别检测第一电池 16a与第二电池 16b供应的功 率； 以及根据检测的结果， 产生多个检测信号予控制器 10。 流程前进至判断 歩骤 S7。 In step S6, detecting the degree of charging of the first battery 16a and the second battery 16b by the power supply 18, wherein the step S6 comprises: detecting the power supplied by the first battery 16a and the second battery 16b, respectively; and according to the detection result A plurality of detection signals are generated to the controller 10. The process proceeds to judgment Step S7.
在判断歩骤 S7， 判断第一电池 16a与第二电池 16b供应的功率是否大于 第一上限值与第二上限值。 若是， 流程前进至歩骤 S8。 若否， 流程退回歩 骤 S6。  In the determining step S7, it is judged whether the power supplied from the first battery 16a and the second battery 16b is greater than the first upper limit value and the second upper limit value. If so, the flow proceeds to step S8. If no, the process returns to step S6.
在歩骤 S8， 当第一电池 16a与第二电池 16b供应的功率大于第一上限值 与第二上限值时， 停止电源供应器 18对第一电池 16a与第二电池 16b的充 电。  At step S8, when the power supplied from the first battery 16a and the second battery 16b is greater than the first upper limit value and the second upper limit value, the charging of the first battery 16a and the second battery 16b by the power supply 18 is stopped.
锂系电池具有放电功率大与体积小 (重量轻:)的优点， 而铅酸电池具有稳 定与成本低廉的优点， 藉由本发明揭露的车用电源系统， 锂系电池与铅酸电 池的优点便得以兼顾。 此外， 本发明藉由提供电路检测与比例式开启 (或关 闭:)的机制予每一个电池， 来达到调节功率的目的。  Lithium-based batteries have the advantages of large discharge power and small volume (light weight:), while lead-acid batteries have the advantages of stability and low cost. With the vehicle power supply system disclosed by the present invention, the advantages of lithium-based batteries and lead-acid batteries are Can be balanced. In addition, the present invention achieves the purpose of regulating power by providing a mechanism for circuit detection and proportional turn-on (or off:) to each battery.

Claims

权利要求书 Claim
1.一种车用电源系统， 其特征在于， 所述的车用电源系统包括： 一第一电池与一第二电池， 分别耦接于一电源供应器与一电路负载之 间， 用以接收一电源供应器的电源或提供电源予一电路负载； A vehicle power supply system, wherein the vehicle power supply system comprises: a first battery and a second battery, respectively coupled between a power supply and a circuit load for receiving a power supply to a power supply or to provide power to a circuit load;
一第一电路检测单元与一第二电路检测单元， 分别耦接至所述第一电池 与所述第二电池， 用以检测所述第一电池与所述第二电池的充放电程度； 以 及  a first circuit detecting unit and a second circuit detecting unit are respectively coupled to the first battery and the second battery for detecting a charge and discharge degree of the first battery and the second battery;
一控制器， 根据所述第一电池与第二电池的充放电程度而产生多个控制 信号， 用以分别控制一第一开关、 一第二开关以及一第三开关， 藉此控制所 述第一电池与所述第二电池的充放电。  a controller, generating a plurality of control signals according to the degree of charge and discharge of the first battery and the second battery, for controlling a first switch, a second switch, and a third switch, respectively, thereby controlling the first Charging and discharging of a battery and the second battery.
2.如权利要求 1所述的车用电源系统， 其特征在于， 所述的车用电源系 统包括一第一比例式调节电流控制开关与一第二比例式调节电流控制开关， 根据所述控制器产生的所述多个电流控制信号来分别控制所述第一电池与第 二电池的充放电， 其中所述第一比例式调节电流控制开关连接于所述第一电 路检测单元与所述第一电池之间， 并且所述第二比例式调节电流控制开关连 接于所述第二电路检测单元与所述第二电池之间。  2 . The vehicle power supply system according to claim 1 , wherein the vehicle power supply system comprises a first proportional adjustment current control switch and a second proportional adjustment current control switch, according to the control. The plurality of current control signals generated by the device to respectively control charging and discharging of the first battery and the second battery, wherein the first proportional adjustment current control switch is connected to the first circuit detecting unit and the first Between a battery, and the second proportional adjustment current control switch is connected between the second circuit detecting unit and the second battery.
3.如权利要求 1所述的车用电源系统， 其特征在于， 所述第一开关连接 于所述电源供应器与一第一节点之间， 所述第一节点耦接至所述电路负载与 所述第一电路检测单元； 所述第三开关连接于所述电路负载与一第二节点之 间， 所述第二节点耦接至所述电源供应器与所述第二电路检测单元； 并且所 述第二开关连接于所述第一节点与所述第二节点之间。  The vehicle power supply system according to claim 1, wherein the first switch is connected between the power supply and a first node, and the first node is coupled to the circuit load And the first circuit detecting unit; the third switch is connected between the circuit load and a second node, the second node is coupled to the power supply and the second circuit detecting unit; And the second switch is connected between the first node and the second node.
4.如权利要求 2所述的车用电源系统， 其特征在于， 所述第一比例式调 节电流控制开关与所述第二比例式调节电流控制开关分别根据所述电流控制 信号而被比例式地开启或关闭。  The vehicle power supply system according to claim 2, wherein the first proportional adjustment current control switch and the second proportional adjustment current control switch are proportionally respectively according to the current control signal Ground on or off.
5.如权利要求 2所述的车用电源系统， 其特征在于， 当所述车用电源系 统进行放电操作时， 所述第一开关、 所述第二开关以及所述第三开关分别根 据一第一控制信号、 一第二控制信号以及一第三控制信号而被关闭、 开启以 及开启， 并且所述第一比例式调节电流控制开关与所述第二比例式调节电流 控制开关根据一第一电流控制信号与一第二电流控制信号而被开启， 使得所 述第一电池与第二电池对所述电路负载放电。 The vehicle power supply system according to claim 2, wherein when the vehicle power supply system When the discharging operation is performed, the first switch, the second switch, and the third switch are respectively turned off, on, and turned on according to a first control signal, a second control signal, and a third control signal, respectively. And the first proportional adjustment current control switch and the second proportional adjustment current control switch are turned on according to a first current control signal and a second current control signal, so that the first battery and the second battery Discharge the circuit load.
6.如权利要求 5所述的车用电源系统， 其特征在于， 当所述第一电路检 测单元检测出所述第一电池供应的功率小于一第一下限值时， 所述第一比例 式调节电流控制开关根据一第三电流控制信号而被关闭， 使得所述第一电池 停止对所述电路负载放电。  The vehicle power supply system according to claim 5, wherein when the first circuit detecting unit detects that the power supplied by the first battery is less than a first lower limit value, the first ratio The regulated current control switch is turned off according to a third current control signal such that the first battery stops discharging the circuit load.
7.如权利要求 2所述的车用电源系统， 其特征在于， 当所述车用电源系 统进行充电操作时， 所述第一开关、 所述第二开关以及所述第三开关分别根 据一第四控制信号、 一第五控制信号以及一第六控制信号而被开启、 开启以 及关闭， 并且所述第一比例式调节电流控制开关与所述第二比例式调节电流 控制开关根据一第四电流控制信号与一第五电流控制信号而被开启， 使得所 述电源供应器对所述第一电池与第二电池充电。  The vehicle power supply system according to claim 2, wherein, when the vehicle power supply system performs a charging operation, the first switch, the second switch, and the third switch are respectively a fourth control signal, a fifth control signal, and a sixth control signal are turned on, turned on, and turned off, and the first proportional adjustment current control switch and the second proportional adjustment current control switch are according to a fourth The current control signal is turned on with a fifth current control signal, such that the power supply charges the first battery and the second battery.
8.如权利要求 7所述的车用电源系统， 其特征在于， 当所述第一电路检 测单元检测出所述第一电池供应的功率大于一第一上限值时， 所述第一比例 式调节电流控制开关根据一第六电流控制信号而被关闭， 使得所述电源供应 器停止对所述第一电池充电。  The vehicle power supply system according to claim 7, wherein the first ratio detecting unit detects that the power supplied by the first battery is greater than a first upper limit value, the first ratio The regulated current control switch is turned off according to a sixth current control signal, such that the power supply stops charging the first battery.
9.如权利要求 7所述的车用电源系统， 其特征在于， 当所述第二电路检 测单元检测出所述第二电池供应的功率大于一第二上限值时， 所述第二比例 式调节电流控制开关根据一第七电流控制信号而被关闭， 使得所述电源供应 器停止对所述第二电池充电。  The vehicle power supply system according to claim 7, wherein when the second circuit detecting unit detects that the power supplied by the second battery is greater than a second upper limit value, the second ratio The regulated current control switch is turned off according to a seventh current control signal such that the power supply stops charging the second battery.
10.—种车用电源管理方法， 适用于一车用电源系统， 其特征在于， 所述 电源管理方法包括：  10. A power management method for a vehicle, which is suitable for a vehicle power supply system, characterized in that: the power management method comprises:
启始一第一电池与一第二电池的放电程序； 检测所述第一电池与所述第二电池对一电路负载的放电程度； 判断所述第一电池供应的功率是否小于一下限值； Initiating a discharge procedure of a first battery and a second battery; Detecting a degree of discharge of the first battery and the second battery to a circuit load; determining whether the power supplied by the first battery is less than a lower limit;
当所述第一电池供应的功率小于所述下限值时， 停止所述第一电池对所 述电路负载的放电；  Disabling the discharge of the first battery to the circuit load when the power supplied by the first battery is less than the lower limit;
启始所述第一电池与所述第二电池的充电程序；  Initiating a charging procedure of the first battery and the second battery;
检测一电源供应器对所述第一电池与所述第二电池的充电程度； 判断所述第一电池与所述第二电池供应的功率是否大于一第一上限值与 一第二上限值； 以及  Detecting a degree of charging of the first battery and the second battery by a power supply; determining whether the power supplied by the first battery and the second battery is greater than a first upper limit and a second upper limit Value;
当所述第一电池与第二电池供应的功率大于所述第一上限值与所述第二 上限值时， 停止所述电源供应器对所述第一电池与所述第二电池的充电。  Stopping the power supply to the first battery and the second battery when the power supplied by the first battery and the second battery is greater than the first upper limit value and the second upper limit value Charging.
11.如权利要求 10所述的车用电源管理方法， 其特征在于， 启始所述第 一电池与所述第二电池的放电程序包括：  The vehicle power management method according to claim 10, wherein the discharging process for starting the first battery and the second battery comprises:
根据一控制器产生的一第一控制信号、 一第二控制信号与一第三控制信 号， 分别关闭一第一开关、 开启一第二开关并且开启一第三开关； 以及  Turning off a first switch, turning on a second switch, and turning on a third switch according to a first control signal, a second control signal and a third control signal generated by a controller;
根据所述控制器产生的一第一电流控制信号与一第二电流控制信号， 分 别比例式地开启一第一比例式调节电流控制开关与一第二比例式调节电流控 制开关。  And driving a first proportional adjustment current control switch and a second proportional adjustment current control switch according to a first current control signal and a second current control signal generated by the controller.
12.如权利要求 10所述的车用电源管理方法， 其特征在于， 检测所述第 一电池与所述第二电池对所述电路负载的放电程度包括：  The vehicle power management method according to claim 10, wherein detecting the degree of discharge of the first battery and the second battery to the circuit load comprises:
分别检测所述第一电池与所述第二电池供应的功率； 以及  Detecting power supplied by the first battery and the second battery, respectively;
根据检测的结果， 产生多个检测信号予一控制器。  According to the result of the detection, a plurality of detection signals are generated to a controller.
13.如权利要求 10所述的车用电源管理方法， 其特征在于， 停止所述第 一电池对所述电路负载的放电包括：  The vehicle power management method according to claim 10, wherein the stopping the discharge of the first battery to the circuit load comprises:
根据一控制器产生的一第三电流控制信号， 比例式地关闭一第一比例式 调节电流控制开关。  A first proportional regulation current control switch is proportionally closed according to a third current control signal generated by a controller.
14.如权利要求 10所述的车用电源管理方法， 其特征在于， 启始所述第 一电池与所述第二电池的充电程序包括： The vehicle power management method according to claim 10, wherein said starting said said The charging procedure of a battery and the second battery includes:
根据一控制器产生的一第一控制信号、 一第二控制信号与一第三控制信 号而分别开启一第一开关、 开启一第二开关以及关闭一第三开关； 以及  Turning on a first switch, turning on a second switch, and turning off a third switch according to a first control signal, a second control signal, and a third control signal generated by a controller;
根据所述控制器产生的一第四电流控制信号与一第五电流控制信号， 分 别比例式地开启一第一比例式调节电流控制开关与一第二比例式调节电流控 制开关。  And driving a first proportional adjustment current control switch and a second proportional adjustment current control switch according to a fourth current control signal and a fifth current control signal generated by the controller.
15.如权利要求 10所述的车用电源管理方法， 其特征在于， 检测所述电 源供应器对所述第一电池与所述第二电池的充电程度包括：  The vehicle power management method according to claim 10, wherein detecting the degree of charging of the first battery and the second battery by the power supply device comprises:
分别检测所述第一电池与所述第二电池供应的功率； 以及  Detecting power supplied by the first battery and the second battery, respectively;
根据检测的结果， 产生多个检测信号予一控制器。  According to the result of the detection, a plurality of detection signals are generated to a controller.
16.如权利要求 10所述的车用电源管理方法， 其特征在于， 停止所述电 源供应器对所述第一电池与第二电池的充电包括：  The vehicle power management method according to claim 10, wherein the stopping the charging of the first battery and the second battery by the power supply device comprises:
根据一控制器供应的一第六电流控制信号与一第七电流控制信号， 比 例式地关闭一第一比例式调节电流控制开关与一第二比例式调节电流控制 开关。  A first proportional adjustment current control switch and a second proportional adjustment current control switch are turned off according to a sixth current control signal and a seventh current control signal supplied from a controller.
PCT/CN2011/080162 2010-10-29 2011-09-26 Vehicle power supply system and power supply management method thereof WO2012055311A1 (en)

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