WO2011097979A1 - 一种蓄电池供电方法、装置及系统 - Google Patents

一种蓄电池供电方法、装置及系统 Download PDF

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Publication number
WO2011097979A1
WO2011097979A1 PCT/CN2011/070462 CN2011070462W WO2011097979A1 WO 2011097979 A1 WO2011097979 A1 WO 2011097979A1 CN 2011070462 W CN2011070462 W CN 2011070462W WO 2011097979 A1 WO2011097979 A1 WO 2011097979A1
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WO
WIPO (PCT)
Prior art keywords
battery
power supply
circulating
load
backup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/070462
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English (en)
French (fr)
Inventor
叶建设
乐斌
莫远波
彭俊科
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XI AN RASIN TECHNOLOGIES Co Ltd
Original Assignee
XI AN RASIN TECHNOLOGIES Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by XI AN RASIN TECHNOLOGIES Co Ltd filed Critical XI AN RASIN TECHNOLOGIES Co Ltd
Priority to JP2012552244A priority Critical patent/JP2013531448A/ja
Priority to BR112012019836A priority patent/BR112012019836A2/pt
Priority to MX2012009272A priority patent/MX2012009272A/es
Priority to EP11741850A priority patent/EP2523306A4/en
Publication of WO2011097979A1 publication Critical patent/WO2011097979A1/zh
Priority to US13/567,775 priority patent/US20120293002A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20End-user application control systems

Definitions

  • the present invention relates to the field of communications technologies, and more particularly to a battery power supply method, apparatus and system.
  • the existing general treatment methods are: directly discard the original lead-acid battery of the base station, replace it with a new battery or Long-life, deep-cycle iron-lithium battery.
  • old lead-acid batteries are discarded anywhere, causing serious environmental pollution and waste of funds.
  • the existing maintenance-free lead-acid batteries have insufficient cycle life, which is not conducive to long-term outdoor cycling environment, and it is easy to form batteries. Fast failure, a vicious cycle in which the old battery is replaced, and the new battery is quickly replaced.
  • FIG 1 is a schematic diagram of an implementation of the application technology, mainly composed of an AC input, a power supply system, a battery pack, and a load; the load can be connected to different devices according to requirements; the battery pack is composed of an old battery pack 1 and a new battery pack 2 in parallel.
  • the embodiments of the present invention provide a battery power supply method, device, and system, which can implement mixing between different types of storage batteries.
  • the embodiment of the invention provides a battery power supply method, and the method includes:
  • the backup battery is enabled to supply the load.
  • An embodiment of the present invention provides a battery power supply device, where the device includes:
  • a detecting unit configured to detect a power supply state of the circulating battery in the system, wherein the system first supplies power to the load by the circulating battery;
  • control unit configured to enable the backup battery to supply power to the load when the voltage of the circulating battery drops to a voltage threshold.
  • the embodiment of the present invention further provides a battery power supply system, the system comprising: a power system, a load, a battery for recycling, and a backup battery, and the battery power supply device; wherein: the power system is used for external AC power supply The load is supplied with power, and the circulating battery and the backup battery are charged by the battery power supply device by using the external alternating current;
  • the circulating battery and the backup battery are configured to supply power to the load through the battery power supply device when the external alternating current is abnormal.
  • the technical solution provided by the embodiment of the present invention has the following advantages:
  • the deep cycle and long life characteristics of the battery for circulation are utilized, and the load is first used to supply power to the load, and is set by using The voltage is wide, and when the voltage of the circulating battery drops to the voltage threshold, the backup battery is enabled to supply the load, so that the circulating battery and the backup battery of different types and different discharge characteristics can be combined. It can realize the reuse of the old backup battery, improve the utilization rate of the backup battery, extend the life of the backup battery, and reduce the replacement frequency of the backup battery;
  • the combination of the recycling battery and the backup battery of different types and different discharge characteristics can solve the defect of insufficient backup battery capacity, and improve the system backup time and reliability.
  • FIG. 1 is a schematic diagram of power supply using a new and old battery pack in the prior art
  • FIG. 2 is a flow chart showing the steps of a battery power supply method according to an embodiment of the present invention
  • FIG. 3 is a flow chart showing the steps of another battery power supply method according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a battery power supply device according to an embodiment of the present invention.
  • Figure 5 is a schematic structural view of the first control unit
  • FIG. 6 is a schematic structural view of a second control unit
  • FIG. 7 is a schematic structural diagram of a battery power supply system according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a specific implementation of a battery power supply system according to an embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of another battery power supply system according to an embodiment of the present invention.
  • the circulating battery and the backup battery of different types and different discharge characteristics are combined to improve For the utilization of the backup battery.
  • FIG. 2 it is a schematic flowchart of the steps of the method, and the method may include the following steps:
  • Step 101 Detect a power supply state of a circulating battery in the system, where the system first supplies power to the load by the circulating battery;
  • Step 102 When the voltage of the circulating battery drops to a voltage threshold, the backup battery is enabled to supply the load.
  • the embodiment of the invention effectively utilizes the characteristics of deep cycle and long life of the circulating battery, and by setting the voltage threshold, the power supply for the load for a long time is provided by the circulating battery, and when the voltage of the circulating battery drops to the voltage threshold , the backup battery is enabled to supply power to the load, thereby achieving
  • the backup battery is supported by a small-capacity backup battery, so that the cycle battery and the backup battery can be extended, the old backup battery can be reused, the life of the backup battery pack can be extended, and the number of backup battery replacements can be reduced. Reduce the investment in the power supply system of the base station and reduce the possible environmental pollution.
  • the combination of the circulating battery and the backup battery can solve the defects of insufficient backup battery capacity and insufficient standby time of the base station, and improve the reliability of the base station power supply system.
  • the communication line is unobstructed.
  • the backup battery generally has a low storage capacity and a short cycle life, for example: a valve-regulated lead-acid battery; the circulating battery generally has a high storage capacity and a long cycle life.
  • Lithium iron phosphate battery or rich liquid battery Commonly used in existing base station power supply systems are backup batteries that have low storage capacity and short cycle life.
  • the condition that the backup battery is enabled to supply power to the load is that the voltage of the battery for circulation is reduced to a voltage threshold.
  • the implementation process may include two specific implementation manners: When the voltage of the circulating battery falls to the same voltage as the backup battery, the load is supplied in parallel by the circulating battery and the backup battery. In this implementation, the current voltage of the backup battery that is not connected to the power supply system is directly used as the voltage threshold of the battery for circulation, and when the voltage of the battery for the cycle is reduced to be the same as the current voltage of the backup battery, The parallel storage battery and the circulating battery are used to supply power to the load. In another implementation manner, when the voltage of the circulating battery drops to a preset voltage value, the circulating battery is interrupted to the load.
  • the backup battery is used to provide independent power supply to the load, and is suitable for an application scenario in which the backup battery is used to provide short-term backup power to the load.
  • another battery power supply method is provided in the embodiment of the present invention. As shown in FIG. 3, the method includes:
  • Step 301 Detecting a power supply state of the circulating battery in the system, where the system first supplies power to the load by the circulating battery;
  • Step 302 When the voltage of the circulating battery drops to a preset voltage value, interrupting power supply of the circulating battery to the load, and powering the load by the backup battery;
  • Step 303 When the voltage of the backup battery falls to the preset voltage value, the load is supplied by the circulating battery and the backup battery in parallel.
  • the load for the voltage value of the cycle battery and the backup battery to be preset, the load is first used to supply power to the load, and when the voltage of the independent cycle battery falls to a preset voltage value, the backup battery pair is enabled. The load is independently powered.
  • the technical solution of the above embodiment describes an application scenario in which the external battery is abnormal, and the load is supplied by the circulating battery and the backup battery.
  • the load is usually supplied by external AC power
  • the circulating battery and the backup battery are charged by external AC power.
  • the battery for circulation is usually first charged.
  • the backup battery is charged to ensure that when the battery is used to maintain the load, the long-term power supply of the load is provided by the circulating battery.
  • the standby power of the load is supported by a smaller capacity backup battery.
  • the battery power supply device 20 includes:
  • the detecting unit 201 is configured to detect a power supply state of the circulating battery in the system, wherein the system first supplies power to the load by the circulating battery;
  • the control unit 202 is configured to enable the backup battery to supply power to the load when the voltage of the circulating battery drops to a voltage threshold.
  • the embodiment of the invention effectively utilizes the characteristics of deep cycle and long life of the circulating battery.
  • the load is first supplied by the circulating battery, that is, the long-term power supply of the load is used by the cycle.
  • the battery is provided; when the voltage of the circulating battery drops to a voltage threshold, the backup battery is enabled to supply the load.
  • the battery power supply device supports the backup power of the load by the backup battery of a smaller capacity, thereby making the battery for circulation
  • the spare battery can be extended, the old spare battery can be reused, the life of the backup battery pack can be prolonged, the number of spare battery replacements can be reduced, the transformation input of the base station power supply system can be reduced, and possible environmental pollution can be reduced;
  • the combination of the battery and the backup battery can solve the defects of insufficient capacity of the backup battery and insufficient standby time of the base station, improve the reliability of the power supply system of the base station, and ensure the smoothness of the communication line.
  • control unit includes: a first control unit, configured to: when the voltage of the circulating battery drops to the same voltage as the backup battery, by the cycle The battery is powered in parallel with the backup battery; the second control unit is configured to interrupt the power supply of the circulating battery to the load when the voltage of the circulating battery drops to a preset voltage value, The backup battery supplies power to the load.
  • control unit in the embodiment of the present invention provides two battery power supply modes.
  • the second control unit is further configured to: when the voltage of the backup battery drops to the preset voltage value, the battery for the cycle and the backup battery are connected in parallel The load is powered.
  • the load can be supplied by the battery power supply device using the circulating battery and the backup battery.
  • the load is usually supplied by external AC power, and the cycle battery and the backup battery are charged by external AC power. Therefore, the control unit is further configured to: during the charging of the circulating battery and the backup battery by using the external alternating current, control the alternating current to first charge the circulating battery, and after the charging of the circulating battery is completed, control the alternating current to reserve The battery is charged.
  • the first control unit may include: a diode 301 and a resistor 302 connected in parallel across the diode 301; wherein, the anode of the diode 301 is connected to the anode of the backup battery 303; and the cathode of the diode 301 is connected.
  • the positive pole of the circulating battery 304 is connected to the output positive pole of the power supply system 305.
  • the power supply system 305 is configured to directly supply power to the load by using external alternating current when the external alternating current is normal, and use the external alternating current to the circulating battery. with The spare battery is charged.
  • the resistor 302 is used to limit charging of the backup battery 303 by external alternating current.
  • the diode 301 is configured to control the cycle battery 304 to discharge before the backup battery 303; when the voltage of the cycle battery 304 falls to be the same as the backup battery 303, the backup battery 303 is controlled The circulating battery 304 is simultaneously discharged.
  • the power supply system When the external AC input is normal and the load is supplied by external AC power, the power supply system directly charges the circulating battery, and the backup battery is charged by the current limiting resistor R1, so that a large current can be charged to the circulating battery, and a small current is charged to the backup battery. .
  • the load When the external AC input is abnormal, the load is supplied by the circulating battery and the backup battery. According to the reverse characteristics of the diode and the different voltage platforms of the circulating battery and the backup battery, the circulating battery usually discharges preferentially. At this time, the voltage platform The high cycle battery does not charge the backup battery with low voltage platform, which can avoid the bias current; the backup battery is temporarily disconnected and does not generate discharge; when the cycle battery voltage drops to the same as the backup battery voltage, the backup battery starts. Discharge, and the backup battery is connected in parallel with the circulating battery to supply power to the load.
  • the embodiment of the invention provides a feasible way to realize the reuse of the spare battery, which is simple and convenient to implement.
  • the second control unit may include: a first switching device 306 disposed between the backup battery 303 and the power system 305, and a battery for the cycle. a second switching device 307 and a micro control subunit 308 between the power supply system 305;
  • the control subunit 308 is configured to output a connection or disconnection control signal to the first switching device 306 and the second switching device 307;
  • the first switching device 306 is configured to implement a connection or disconnection state of the backup storage battery 303 and the power supply system 305 according to the corresponding control signal;
  • the second switching device 307 is configured to implement a connection or disconnection state of the circulating battery 304 and the power supply system 305 according to the corresponding control signal. "OQ" When the AC input is normal, the micro control subunit 308 outputs a connection control signal to the second switching device 307, realizes the connection of the cycle battery 304 to the power supply system 305, and outputs a disconnection control signal to the first switching device 306. The disconnection of the backup battery 303 from the power supply system 305 is achieved.
  • the circulation battery 304 When the circulation battery 304 is connected to the power supply system 305, the circulation battery 304 is charged by the external alternating current; after the circulation battery 304 is charged, the control subunit 308 outputs the disconnection control signal to the second switching device 307, and A switching device 306 outputs a connection control signal to realize connection between the backup battery 303 and the power supply system 305.
  • the backup battery 303 is charged by external alternating current. After the backup battery 303 is charged, the control subunit 308 outputs the disconnection control to the first switching device 306. signal.
  • the external alternating current can be controlled to first charge the circulating battery, and after the charging of the circulating battery is completed, the alternating current is controlled to charge the standby battery.
  • the micro control subunit 308 controls the circulating battery 304 and the backup battery 303 to supply power to the load.
  • the specific implementation manner is as follows: Micro control subunit 308 first outputs a connection control signal to the second switching device 307 to realize connection between the cycle battery 304 and the power supply system 305, and the cycle battery 304 first supplies power to the load, and the detection unit 201 simultaneously detects the power supply state of the cycle battery 304.
  • the micro control subunit 308 When the voltage of the cycle battery 304 drops to the preset voltage value, the micro control subunit 308 outputs an off control signal to the second switching device 307, interrupting the supply of power to the load by the cycle battery 304; meanwhile, by the micro control subunit 308 The connection control signal is outputted to the first switching device 306 to realize the connection between the backup battery 303 and the power supply system 305, and the backup battery 303 supplies power to the load.
  • the detecting unit 201 simultaneously detects the power supply state of the backup battery 303, and the voltage drop of the backup battery 303.
  • Micro control sub-unit 308 again to the second switching device 307 outputs a control signal is connected, to achieve the circulation storage battery 304 is connected to the power supply system 305 provides power to the load from the battery after 304 cycles and 303 parallel access to the battery backup.
  • the specific implementation of the first switching device 306 and the second switching device 307 can be selectively set according to an application scenario, such as: a triode, a MOS transistor, to enable the connection between the power system 305 and each battery to be turned on or off.
  • an application scenario such as: a triode, a MOS transistor, to enable the connection between the power system 305 and each battery to be turned on or off.
  • the present invention is not specifically limited thereto.
  • the battery power supply device of the present invention further provides a battery power supply system. As shown in FIG.
  • the system may include: a power supply system 305, a load 309, a circulating battery 304, and a backup battery 303, and a battery power supply.
  • the circulating battery 304 and the backup battery 303 are configured to supply power to the load 309 through the battery power supply device when the external alternating current is abnormal;
  • the battery power supply device 20 includes: a detecting unit 201, configured to detect the system a power supply state of the intermediate battery 304, wherein the system first supplies power to the load 309 by the circulating battery 304;
  • the control unit 202 is configured to enable the backup battery 303 to supply power to the load 309 when the voltage of the circulating battery 304 drops to a voltage threshold.
  • the embodiment of the invention effectively utilizes the characteristics of deep cycle and long life of the battery for circulation, the power supply for the long time of the load is provided by the circulating battery, and the backup battery of the smaller capacity supports the backup of the load, thereby making the battery for circulation
  • the spare battery can be extended, the old spare battery can be reused, the life of the backup battery pack can be prolonged, the number of spare battery replacements can be reduced, the transformation input of the base station power supply system can be reduced, and possible environmental pollution can be reduced;
  • the combination of the battery and the backup battery can solve the defects of insufficient capacity of the backup battery and insufficient standby time of the base station, improve the reliability of the power supply system of the base station, and ensure the smoothness of the communication line.
  • the specific implementation of the battery power supply device 20 includes: a diode 301 and a resistor 302 connected in parallel across the diode 301; wherein, the anode of the diode 301 is connected to the anode of the backup battery 303; The cathode of the diode 301 is connected to the anode of the circulating battery 304, and is connected to the output positive pole of the power supply system 305;
  • the resistor 302 is configured to limit charging power for charging the backup battery 303 by external alternating current
  • the diode 301 is configured to control the cycle battery 304 to discharge before the backup battery 303; when the voltage of the cycle battery 304 falls to be the same as the backup battery 303, the backup battery 303 is controlled
  • the circulating battery 304 is simultaneously discharged.
  • the specific implementation of the battery power supply device 20 includes: a first switch device 306 disposed between the backup battery 303 and the power system 305 , and a battery 305 disposed in the cycle and the power system 305 . a second switching device 307 and a micro control subunit 308; wherein the control subunit 308 is configured to output a connection or disconnection control signal to the first switching device 306 and the second switching device 307;
  • the switching device 306 is configured to implement a connection or disconnection state of the backup battery 303 and the power system 305 according to the corresponding control signal; the second switching device 307 is configured to implement the The battery 304 for circulation is connected or disconnected from the power supply system 305.
  • the specific implementation of the first switching device 306 and the second switching device 307 can be selectively set according to an application scenario, such as: a triode, a MOS transistor, to achieve a connection between the power system 305 and each battery or
  • an application scenario such as: a triode, a MOS transistor, to achieve a connection between the power system 305 and each battery or
  • the present invention is not specifically limited.
  • the external alternating current when the external alternating current input is normal, the external alternating current can be controlled to first charge the circulating battery, and when the circulating battery is completed, the alternating current is controlled to charge the standby battery.
  • the alternating current can be controlled to first charge the circulating battery, and after the circulating battery is charged, the alternating current is controlled to charge the standby battery.
  • the circulating battery includes a lithium iron silicate battery or a rich liquid battery
  • the backup battery includes a valve-regulated lead-acid battery.
  • the battery power supply device in the above embodiment of the present invention may be implemented by software, hardware, or a combination of software and hardware, which is not specifically limited in this embodiment of the present invention.
  • the description is relatively simple, and the relevant parts can be referred to the description of the device embodiment.
  • the device embodiments described above are merely illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, ie may be located One place, or it can be distributed to multiple network modules.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Battery Mounting, Suspending (AREA)

Description

...1... 一种蓄电池供电方法、 装置及系统
技术领域
本发明涉及通信技术领域, 更具体地说, 涉及一种蓄电池供电方法、 装 置及系统。
背景技术
随着移动通信规模的飞速发展, 无人值守的室外基站越来越多。 由于大 部分室外基站一般都设在偏远地区, 其电网环境较差或者无市电。 现网的绝 大多数无市电通信基站都是采用双油机轮换供电。 随着新的低成本低油耗供 电解决方案出台, 大量的通信基站需要优化改造。
在实际的站点改造实施过程中, 由于新旧蓄电池或不同种类蓄电池的内 阻不同, 这些蓄电池不能混用, 现有的一般处理方式为: 直接丟弃基站原有 的铅酸蓄电池, 换上新蓄电池或者长寿命、 深循环的铁锂蓄电池。 但是, 旧 的铅酸蓄电池随地丟弃, 造成严重的环境污染和资金浪费; 此外, 现有的免 维护铅酸蓄电池循环寿命不足, 不利于长时间室外恶劣环境下的循环应用, 容易形成蓄电池很快失效一丟弃旧蓄电池、 更换新蓄电池组一新蓄电池很快 失效的恶性循环; 并且, 当前实现大容量配置铁锂蓄电池较困难, 蓄电池容 量难以满足基站的备电需求, 且价格昂贵, 大容量配置则大幅度增加系统的 成本。
为了避免上述技术缺陷, 且出于成本和备电时间的考虑, 现有技术在实 际的站点改造实施过程中, 尽量保留原有的旧蓄电池组, 将新的蓄电池组与 之并联使用, 如图 1所示, 为该应用技术的实施方案示意图, 主要由交流电输 入、 电源系统、 蓄电池组、 负载组成; 负载可以根据需要接不同设备; 蓄电 池组由旧蓄电池组 1和新蓄电池组 2并联组成。
但是, 本发明人在研究过程中发现, 现有技术至少存在以下不足之处: 不同厂家、 新旧程度、 种类、 规格的蓄电池的内阻差异很大, 放电特性 也不相同。 如果直接将新旧蓄电池并联使用, 轻者将会产生显著的偏流, 即 使长寿命的新蓄电池也会受到影响, 大大降低了蓄电池的循环寿命; 重者将 会发生蓄电池组过充和过放, 导致蓄电池鼓胀破裂, 出现严重的安全隐患。
发明内容 有鉴于此, 本发明实施例提供一种蓄电池供电方法、 装置及系统, 能够 实现不同种类蓄电池之间的混用。
本发明实施例提供一种蓄电池供电方法, 所述方法包括:
检测系统中循环用蓄电池的供电状态, 其中, 所述系统首先由所述循环 用蓄电池对负载进行供电;
当所述循环用蓄电池的电压降至电压阔值时, 启用备用蓄电池对所述负 载进行供电。
本发明实施例提供一种蓄电池供电装置, 所述装置包括:
检测单元, 用于检测系统中循环用蓄电池的供电状态, 其中, 所述系统 首先由所述循环用蓄电池对负载进行供电;
控制单元, 用于当所述循环用蓄电池的电压降至电压阔值时, 启用备用 蓄电池对所述负载进行供电。
本发明实施例还提供一种蓄电池供电系统, 所述系统包括: 电源系统、 负载、 循环用蓄电池和备用蓄电池, 以及上述的蓄电池供电装置; 其中: 所述电源系统, 用于通过外部交流电对所述负载进行供电, 并通过所述 蓄电池供电装置利用所述外部交流电对所述循环用蓄电池和备用蓄电池进行 充电;
所述循环用蓄电池和备用蓄电池, 用于当所述外部交流电异常时, 通过 所述蓄电池供电装置对负载进行供电。
同现有技术相比, 本发明实施例提供的技术方案具有以下优点: 本发明实施例中利用循环用蓄电池的深循环、 长寿命的特性, 首先利用 循环用蓄电池对负载进行供电, 并通过设置电压阔值, 当所述循环用蓄电池 的电压降至该电压阔值时, 启用备用蓄电池对负载进行供电, 因此, 能够实 现将不同种类、 不同放电特性的循环用蓄电池和备用蓄电池进行联用, 能够 实现对于旧的备用蓄电池的再利用, 提高备用蓄电池的利用率, 延长备用蓄 电池的寿命, 降低备用蓄电池的更换频率;
同时, 将不同种类、 不同放电特性的循环用蓄电池和备用蓄电池的联用, 能够解决备用蓄电池容量不足的缺陷, 提高系统备电时间和可靠性。
附图说明 "' Q" 为了更清楚地说明本发明实施例的技术方案, 下面将对实施例或现有技 术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图 仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造 性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1为现有技术中利用新旧蓄电池组进行供电的示意图;
图 2本发明实施例一蓄电池供电方法的步骤流程图;
图 3为本发明实施例另一蓄电池供电方法的步骤流程图;
图 4为本发明实施例一种蓄电池供电装置的结构示意图;
图 5为第一控制单元的结构示意图;
图 6为第二控制单元的结构示意图;
图 7为本发明实施例一种蓄电池供电系统的结构示意图;
图 8为本发明实施例一种蓄电池供电系统的具体实现结构示意图; 图 9为本发明实施例另一种蓄电池供电系统的具体实现结构示意图。
具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做 出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
本发明实施例技术方案中, 通过利用循环用蓄电池的深循环、 长寿命的 特性和备用蓄电池容量不足的备电特性, 将不同种类、 不同放电特性的循环 用蓄电池和备用蓄电池进行联用, 提高对于备用蓄电池的利用率。
首先, 对本发明实施例中提供的一种蓄电池供电方法进行如下介绍, 参 照图 2, 为该方法的步骤流程示意图, 所述方法可以包括以下步骤:
步骤 101、 检测系统中循环用蓄电池的供电状态, 其中, 所述系统首先由 所述循环用蓄电池对负载进行供电;
步骤 102、 当所述循环用蓄电池的电压降至电压阔值时, 启用备用蓄电池 对所述负载进行供电。
本发明实施例有效地利用循环用蓄电池的深循环、 长寿命的特性, 通过 设置电压阔值, 实现负载长时间的供电由循环用蓄电池提供, 而当循环用蓄 电池的电压降至电压阔值时, 才启用备用蓄电池对负载进行供电, 从而实现 由较小容量的备用蓄电池支持负载的备电, 因此, 使得循环用蓄电池和备用 蓄电池能够各展其长, 能够实现旧备用蓄电池再利用, 延长备用蓄电池组的 寿命, 减少备用蓄电池更换的次数, 降低基站供电系统的改造投入, 减少可 能的环境污染; 此外, 利用循环用蓄电池和备用蓄电池联用能够解决目前备 用蓄电池容量不足、 基站备电时间不够的缺陷, 提高基站供电系统的可靠性, 保障通信线路的通畅。 需要说明的是, 本发明实施例中, 所述备用蓄电池通常存储电量较低, 循环寿命较短, 例如: 阀控式铅酸蓄电池; 所述循环用蓄电池通常存储电量 较高, 循环寿命较长, 例如: 磷酸铁锂蓄电池或富液蓄电池。 现有基站供电 系统中普遍采用的是存储电量较低且循环寿命较短的备用蓄电池。 本发明实施例中, 启用备用蓄电池对所述负载进行供电的条件是循环用 蓄电池的电压降至电压阔值, 该实现过程可以包括两种具体的实现方式: 一种实现方式是, 当所述循环用蓄电池的电压降至同所述备用蓄电池的 电压相同时, 由所述循环用蓄电池和备用蓄电池并联对所述负载进行供电。 这种实现方式中, 直接利用未接入供电系统的备用蓄电池的当前电压作为所 述循环用蓄电池的电压阔值, 当所述循环用蓄电池的电压降至同备用蓄电池 的当前电压相同时, 则利用并联后的备用蓄电池和循环用蓄电池共同对负载 进行供电; 另一种实现方式是, 当所述循环用蓄电池的电压降至预置电压值时, 中 断所述循环用蓄电池对所述负载的供电, 由所述备用蓄电池对所述负载进行 供电。 这种实现方式中, 当循环用蓄电池的电压降至预置电压值时, 利用备 用蓄电池对负载提供独立供电, 适用于利用备用蓄电池对负载提供短期备电 的应用场景。 针对上述第二种实现方式, 在本发明实施例提供了另一种蓄电池供电方 法, 如图 3所示, 所述方法包括:
步骤 301、 检测系统中循环用蓄电池的供电状态, 其中, 所述系统首先由 所述循环用蓄电池对负载进行供电;
步骤 302、 当所述循环用蓄电池的电压降至预置电压值时, 中断所述循环 用蓄电池对所述负载的供电, 由所述备用蓄电池对所述负载进行供电; 步骤 303、 当所述备用蓄电池的电压降至所述预置电压值时, 由所述循环 用蓄电池和备用蓄电池并联对所述负载进行供电。 本发明实施例中, 对于循环用蓄电池和备用蓄电池预置统一的的电压值, 首先利用循环用蓄电池对负载进行供电, 当独立循环用蓄电池的电压降至预 置电压值时, 启用备用蓄电池对负载进行独立供电, 只有在备用蓄电池的电 压也降至所述预置电压值时, 才将循环用蓄电池再次接入供电系统, 与备用 蓄电池并联, 共同提供对负载的供电。 因此, 能够实现对于备用蓄电池的充 分利用。 上述实施例技术方案描述了当外部交流电异常, 由循环用蓄电池和备用 蓄电池对负载进行供电的应用场景。 当外部交流电正常时, 负载通常由外部 交流电进行供电, 同时, 循环用蓄电池和备用蓄电池利用外部交流电进行充 电。 充电过程中, 通常是首先对循环用蓄电池进行充电, 当循环用蓄电池充 电完成后, 再对备用蓄电池进行充电, 从而保证当利用蓄电池维持负载供电 时, 负载长时间的供电由循环用蓄电池提供, 而由较小容量的备用蓄电池支 持负载的备电。 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整的描述。
为了便于对上述蓄电池供电方法的进一步理解, 下面结合本发明实施例 中的一种蓄电池供电装置的具体实施方式,对本发明进行详细的描述。如图 4 所示, 所述蓄电池供电装置 20包括:
检测单元 201, 用于检测系统中循环用蓄电池的供电状态, 其中, 所述系 统首先由所述循环用蓄电池对负载进行供电;
控制单元 202, 用于当所述循环用蓄电池的电压降至电压阔值时, 启用备 用蓄电池对所述负载进行供电。
本发明实施例有效地利用循环用蓄电池的深循环、 长寿命的特性, 当外 部交流电不能对负载提供供电时, 首先由循环用蓄电池对负载进行供电, 也 就是, 负载长时间的供电由循环用蓄电池提供; 当循环用蓄电池的电压降至 电压阔值时, 才启用备用蓄电池对所述负载进行供电。 可见, 所述蓄电池供 电装置由较小容量的备用蓄电池支持负载的备电, 从而, 使得循环用蓄电池 和备用蓄电池能够各展其长, 能够实现旧备用蓄电池再利用, 延长备用蓄电 池组的寿命, 减少备用蓄电池更换的次数, 降低基站供电系统的改造投入, 减少可能的环境污染; 此外, 利用循环用蓄电池和备用蓄电池联用能够解决 目前备用蓄电池容量不足、 基站备电时间不够的缺陷, 提高基站供电系统的 可靠性, 保障通信线路的通畅。
需要说明的是, 本发明实施例技术方案中, 所述控制单元包括: 第一控制单元, 用于当所述循环用蓄电池的电压降至同所述备用蓄电池 的电压相同时, 由所述循环用蓄电池和备用蓄电池并联对所述负载进行供电; 第二控制单元, 用于当所述循环用蓄电池的电压降至预置电压值时, 中 断所述循环用蓄电池对所述负载的供电, 由所述备用蓄电池对所述负载进行 供电。
可见, 本发明实施例中的控制单元提供了两种蓄电池供电方式。
在本发明实施例的另一个优选技术方案中, 所述第二控制单元还用于当 所述备用蓄电池的电压降至所述预置电压值时, 由所述循环用蓄电池和备用 蓄电池并联对所述负载进行供电。
当外部交流电异常, 可以通过所述蓄电池供电装置利用循环用蓄电池和 备用蓄电池对负载进行供电。 当外部交流电正常时, 负载通常由外部交流电 进行供电, 同时, 循环用蓄电池和备用蓄电池利用外部交流电进行充电。 因 此, 控制单元还用于在利用外部交流电对循环用蓄电池和备用蓄电池进行充 电过程中, 控制所述交流电首先对循环用蓄电池进行充电, 当循环用蓄电池 充电完成后, 再控制所述交流电对备用蓄电池进行充电。 从而, 保证当利用 蓄电池维持负载供电时, 负载长时间的供电由循环用蓄电池提供, 而由较小 容量的备用蓄电池支持负载的备电。
本领域技术人员在具体实施本发明技术方案时, 针对第一控制单元可以 采用以下实现方式:
如图 5所示, 第一控制单元可以包括: 二极管 301和并联在所述二极管 301两端的电阻 302; 其中, 所述二极管 301的正极连接备用蓄电池 303的正 极; 所述二极管 301 的负极连接所述循环用蓄电池 304的正极, 并与电源系 统 305的输出正极连接; 所述电源系统 305用于在外部交流电正常时, 直接 利用外部交流电对负载进行供电, 并利用外部交流电对所述循环用蓄电池和 备用蓄电池进行充电。
所述电阻 302用于限制外部交流电对所述备用蓄电池 303进行充电的充 电电
所述二极管 301用于控制所述循环用蓄电池 304先于所述备用蓄电池 303 进行放电; 当所述循环用蓄电池 304的电压降至与所述备用蓄电池 303相同 时, 控制所述备用蓄电池 303与所述循环用蓄电池 304同时放电。
当外部交流电输入正常, 负载通过外部交流电进行供电时, 电源系统直 接向循环用蓄电池充电, 而备用蓄电池通过限流电阻 R1充电, 因此可以保证 大电流向循环用蓄电池充电, 小电流向备用蓄电池充电。
当外部交流电输入异常时, 负载则通过循环用蓄电池和备用蓄电池进行 供电, 根据二极管的反向特性以及循环用蓄电池和备用蓄电池不同的电压平 台, 循环用蓄电池通常会优先放电, 这时, 电压平台高的循环用蓄电池不会 给电压平台低的备用蓄电池充电, 可以避免偏流; 备用蓄电池暂时处于断开 状态, 不会产生放电; 当循环用蓄电池电压下降至同备用蓄电池电压相同时, 备用蓄电池开始放电, 且备用蓄电池同循环用蓄电池并联, 共同向负载进行 供电。 这样, 能够充分利用循环用蓄电池容量大、 放电倍率大、 循环寿命长 的特性, 实现配置较小容量的备用蓄电池来支撑负载备电, 而负载长时间的 备电则由循环用蓄电池来支撑。 可见, 本发明实施例提供了一种实现备用蓄 电池再利用的可行方式, 实现简单、 方便。
针对所述第二控制单元的实施方式中, 如图 6所示, 第二控制单元可以 包括: 设置于备用蓄电池 303与电源系统 305之间的第一开关装置 306、设置 于所述循环用蓄电池 304与电源系统 305之间的第二开关装置 307和微控制 子单元 308;
其中, 所述 控制子单元 308用于向所述第一开关装置 306和第二开关 装置 307输出连接或断开控制信号;
所述第一开关装置 306用于根据所述相应控制信号, 实现所述备用蓄电 池 303与电源系统 305的连接或断开状态;
所述第二开关装置 307 用于才艮据所述相应控制信号, 实现所述循环用蓄 电池 304与电源系统 305的连接或断开状态。 " O Q " 当交流电输入正常时, 微控制子单元 308向第二开关装置 307输出连接控制 信号, 实现循环用蓄电池 304与电源系统 305的连接, 并向第一开关装置 306输 出断开控制信号, 实现备用蓄电池 303与电源系统 305的断开。 当循环用蓄电 池 304与电源系统 305连接时, 循环用蓄电池 304利用外部交流电进行充电; 当 循环用蓄电池 304充电完成后, 控制子单元 308向第二开关装置 307输出断开 控制信号, 并向第一开关装置 306输出连接控制信号, 实现备用蓄电池 303与 电源系统 305的连接, 备用蓄电池 303利用外部交流电进行充电, 备用蓄电池 303充电完成后, 控制子单元 308向第一开关装置 306输出断开控制信号。
可见, 利用微控制子单元 308, 能够控制外部交流电首先对循环用蓄电池 进行充电, 当循环用蓄电池充电完成后, 再控制所述交流电对备用蓄电池进 行充电。 从而, 保证当利用蓄电池维持负载供电时, 负载长时间的供电由循 环用蓄电池提供, 而由较小容量的备用蓄电池支持负载的备电。
除此之外, 当外部交流电输入异常时, 不能提供负载的正常交流供电时, 则微控制子单元 308控制循环用蓄电池 304和备用蓄电池 303对负载进行供电, 具体实现方式为: 微控制子单元 308首先向第二开关装置 307输出连接控制信 号, 实现循环用蓄电池 304与电源系统 305的连接, 由循环用蓄电池 304首先对 负载进行供电, 检测单元 201同时检测循环用蓄电池 304的供电状态, 当循环 用蓄电池 304的电压降至预置电压值时, 由微控制子单元 308向第二开关装置 307输出断开控制信号, 中断循环用蓄电池 304对负载的供电; 同时, 由微控 制子单元 308向第一开关装置 306输出连接控制信号, 实现备用蓄电池 303与电 源系统 305的连接, 由备用蓄电池 303对负载进行供电, 检测单元 201同时检测 备用蓄电池 303的供电状态, 当备用蓄电池 303的电压降至预置电压值时, 微 控制子单元 308再次向第二开关装置 307输出连接控制信号, 实现循环用蓄电 池 304与电源系统 305的连接, 由循环用蓄电池 304和备用蓄电池 303并联接入 后提供对于负载的供电。
对所述第一开关装置 306、 第二开关装置 307的具体实现可以根据应用场 景进行选择性设置, 如: 三极管、 MOS晶体管, 实现将电源系统 305和各个蓄 电池之间的连接导通或中断, 本发明对此并不做具体限定。
由此, 实现一种不同种类、 不同规格、 不同新旧程度蓄电池之间联用的 方案, 使得循环用蓄电池和备用蓄电池能够各展其长, 能够实现旧备用蓄电 池再利用, 延长备用蓄电池组的寿命, 减少备用蓄电池更换的次数, 降低基 站供电系统的改造投入, 减少可能的环境污染; 此外, 利用循环用蓄电池和 备用蓄电池联用能够解决目前备用蓄电池容量不足、 基站备电时间不够的缺 陷, 提高基站供电系统的可靠性, 保障通信线路的通畅。 相应上述蓄电池供电装置, 本发明实施例还提供了一种蓄电池供电系统, 如图 7所示,所述系统可以包括: 电源系统 305、 负载 309、循环用蓄电池 304 和备用蓄电池 303, 以及蓄电池供电装置 20, 其中, 所述电源系统 305, 用于 通过外部交流电对所述负载 309进行供电, 并通过所述蓄电池供电装置 20利 用所述外部交流电对所述循环用蓄电池 304和备用蓄电池 303进行充电; 所 述循环用蓄电池 304和备用蓄电池 303, 用于当所述外部交流电异常时, 通过 所述蓄电池供电装置对负载 309进行供电; 所述蓄电池供电装置 20包括: 检测单元 201, 用于检测系统中循环用蓄电池 304的供电状态, 其中, 所 述系统首先由所述循环用蓄电池 304对负载 309进行供电;
控制单元 202, 用于当所述循环用蓄电池 304的电压降至电压阔值时, 启 用备用蓄电池 303对所述负载 309进行供电。
本发明实施例有效地利用循环用蓄电池的深循环、 长寿命的特性, 负载 长时间的供电由循环用蓄电池提供, 而由较小容量的备用蓄电池支持负载的 备电, 从而, 使得循环用蓄电池和备用蓄电池能够各展其长, 能够实现旧备 用蓄电池再利用, 延长备用蓄电池组的寿命, 减少备用蓄电池更换的次数, 降低基站供电系统的改造投入, 减少可能的环境污染; 此外, 利用循环用蓄 电池和备用蓄电池联用能够解决目前备用蓄电池容量不足、 基站备电时间不 够的缺陷, 提高基站供电系统的可靠性, 保障通信线路的通畅。
参照图 8和图 9,分别为蓄电池供电系统的两个具体实施例。如图 8所示, 所述蓄电池供电装置 20的具体实现方式为包括: 二极管 301和并联在所述二 极管 301两端的电阻 302; 其中, 所述二极管 301的正极连接备用蓄电池 303 的正极; 所述二极管 301 的负极连接所述循环用蓄电池 304的正极, 并与电 源系统 305的输出正极连接;
所述电阻 302用于限制外部交流电对所述备用蓄电池 303进行充电的充 电电 所述二极管 301用于控制所述循环用蓄电池 304先于所述备用蓄电池 303 进行放电; 当所述循环用蓄电池 304的电压降至与所述备用蓄电池 303相同时, 控制所述备用蓄电池 303与所述循环用蓄电池 304同时放电。
如图 9所示, 所述蓄电池供电装置 20的具体实现方式为包括: 设置于备 用蓄电池 303与电源系统 305之间的第一开关装置 306、设置于所述循环用蓄 电池 304与电源系统 305之间的第二开关装置 307和微控制子单元 308;其中, 所述 控制子单元 308用于向所述第一开关装置 306和第二开关装置 307输 出连接或断开控制信号; 所述第一开关装置 306用于根据所述相应控制信号, 实现所述备用蓄电池 303与电源系统 305的连接或断开状态; 所述第二开关 装置 307用于才艮据所述相应控制信号, 实现所述循环用蓄电池 304与电源系 统 305的连接或断开状态。
对所述第一开关装置 306、第二开关装置 307的具体实现可以才艮据应用场 景进行选择性设置, 如: 三极管、 MOS晶体管, 实现将电源系统 305和各个 蓄电池之间的连接导通或中断, 本发明对此并不做具体限定。
关于图 8和图 9中的蓄电池供电装置的具体工作原理, 已在前面进行过相 关描述, 因此, 本发明实施例在此不再进行赞述。
通过本发明实施例中的蓄电池供电系统, 当外部交流电输入正常时, 能 够控制外部交流电首先对循环用蓄电池进行充电, 当循环用蓄电池充电完成 后, 再控制所述交流电对备用蓄电池进行充电。
同时, 在利用外部交流电对循环用蓄电池和备用蓄电池进行充电过程中, 能够控制所述交流电首先对循环用蓄电池进行充电, 当循环用蓄电池充电完 成后, 再控制所述交流电对备用蓄电池进行充电。 从而, 保证当利用蓄电池 维持负载供电时, 负载长时间的供电由循环用蓄电池提供, 而由较小容量的 备用蓄电池支持负载的备电。
此外, 上述所有实施例中, 循环用蓄电池包括碑酸铁锂蓄电池或富液蓄 电池, 备用蓄电池包括阀控式铅酸蓄电池。 本领域普通技术人员可以理解, 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 ...11... 的存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介 质。
上述本发明实施例中的蓄电池供电装置可以通过软件、 硬件或软硬件结 合实现, 本发明实施例对此并不做具体限制。
对于方法、 系统实施例而言, 由于其基本相应于装置实施例, 所以描述 得比较简单, 相关之处参见装置实施例的部分说明即可。 以上所描述的装置 实施例仅仅是示意性的, 其中所述作为分离部件说明的模块可以是或者也可 以不是物理上分开的, 作为模块显示的部件可以是或者也可以不是物理模块, 即可以位于一个地方, 或者也可以分布到多个网络模块上。 可以 ^:艮据实际的 需要选择其中的部分或者全部模块来实现本实施例方案的目的。 本领域普通 技术人员在不付出创造性劳动的情况下, 即可以理解并实施。
对所公开的实施例的上述说明, 使本领域专业技术人员能够实现或使用 本发明。 对这些实施例的多种修改对本领域的专业技术人员来说将是显而易 见的, 本文中所定义的一般原理可以在不脱离本发明实施例的精神或范围的 情况下, 在其它实施例中实现。 因此, 本发明实施例将不会被限制于本文所 示的这些实施例, 而是要符合与本文所公开的原理和新颖特点相一致的最宽 的范围。

Claims

权利 要求 书
1、 一种蓄电池供电方法, 其特征在于, 所述方法包括:
检测系统中循环用蓄电池的供电状态, 其中, 所述系统首先由所述循环用 蓄电池对负载进行供电;
当所述循环用蓄电池的电压降至电压阔值时, 启用备用蓄电池对所述负载 进行供电。
2、 根据权利要求 1所述的蓄电池供电方法, 其特征在于, 当所述循环用蓄 电池的电压降至电压阔值时, 启用备用蓄电池对所述负载进行供电, 包括: 当所述循环用蓄电池的电压降至同所述备用蓄电池的电压相同时, 由所述 循环用蓄电池和备用蓄电池并联对所述负载进行供电。
3、 根据权利要求 1所述的蓄电池供电方法, 其特征在于, 当所述循环用蓄 电池的电压降至电压阔值时, 启用备用蓄电池对所述负载进行供电, 包括: 当所述循环用蓄电池的电压降至预置电压值时, 中断所述循环用蓄电池对 所述负载的供电, 由所述备用蓄电池对所述负载进行供电。
4、根据权利要求 3所述的蓄电池供电方法,其特征在于, 所述方法还包括: 当所述备用蓄电池的电压降至所述预置电压值时, 由所述循环用蓄电池和 备用蓄电池并联对所述负载进行供电。
5、 根据权利要求 1-4中任一项所述的蓄电池供电方法, 其特征在于, 当使 用外部交流电对负载进行供电时, 所述方法还包括:
利用所述交流电首先对所述循环用蓄电池进行充电;
当所述循环用蓄电池充电完成后, 利用所述交流电对所述备用蓄电池进行 充电。
6、 一种蓄电池供电装置, 其特征在于, 所述装置包括:
检测单元, 用于检测系统中循环用蓄电池的供电状态, 其中, 所述系统首 先由所述循环用蓄电池对负载进行供电;
控制单元, 用于当所述循环用蓄电池的电压降至电压阔值时, 启用备用蓄 电池对所述负载进行供电。
7、 根据权利要求 6所述的蓄电池供电装置, 其特征在于, 所述控制单元包 括: 第一控制单元, 用于当所述循环用蓄电池的电压降至同所述备用蓄电池的 电压相同时, 由所述循环用蓄电池和备用蓄电池并联对所述负载进行供电; 第二控制单元, 用于当所述循环用蓄电池的电压降至预置电压值时, 中断 所述循环用蓄电池对所述负载的供电, 由所述备用蓄电池对所述负载进行供电。
8、 根据权利要求 7所述的蓄电池供电装置, 其特征在于, 所述第二控制单 元还用于:
当所述备用蓄电池的电压降至所述预置电压值时, 由所述循环用蓄电池和 备用蓄电池并联对所述负载进行供电。
9、 根据权利要求 7所述的蓄电池供电装置, 其特征在于, 所述第一控制单 元包括: 二极管和并联在所述二极管两端的电阻;
其中, 所述二极管的正极连接所述备用蓄电池的正极; 所述二极管的负极 连接所述循环用蓄电池的正极, 并与电源系统的输出正极连接;
所述电阻用于限制所述外部交流电对所述备用蓄电池进行充电的充电电 流;
所述二极管用于控制所述循环用蓄电池先于所述备用蓄电池进行放电; 当 所述循环用蓄电池的电压降至与所述备用蓄电池相同时, 控制所述备用蓄电池 与所述循环用蓄电池同时放电。
10、 根据权利要求 7 所述的蓄电池供电装置, 其特征在于, 所述第二控制 单元包括: 设置于所述备用蓄电池与电源系统之间的第一开关装置、 设置于所 述循环用蓄电池与电源系统之间的第二开关装置和微控制子单元;
其中, 所述微控制子单元用于向所述第一开关装置和第二开关装置输出连 接或断开控制信号;
所述第一开关装置用于根据所述相应控制信号, 实现所述备用蓄电池与电 源系统的连接或断开状态;
所述第二开关装置用于根据所述相应控制信号, 实现所述循环用蓄电池与 电源系统的连接或断开状态。
11、 根据权利要求 6-10中任一项所述的蓄电池供电装置, 其特征在于, 所 述循环用蓄电池包括: 磷酸铁锂蓄电池或富液蓄电池。
12、 根据权利要求 6-10中任一项所述的蓄电池供电装置, 其特征在于, 所 述备用蓄电池包括: 阀控式铅酸蓄电池。
13、 一种蓄电池供电系统, 其特征在于, 所述系统包括: 电源系统、 负载、 循环用蓄电池和备用蓄电池,以及如权利要求 3-8中任一项所述的蓄电池供电装 置; 其中:
所述电源系统, 用于通过外部交流电对所述负载进行供电, 并通过所述蓄 电池供电装置利用所述外部交流电对所述循环用蓄电池和备用蓄电池进行充 电;
所述循环用蓄电池和备用蓄电池, 用于当所述外部交流电异常时, 通过所 述蓄电池供电装置对负载进行供电。
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