WO2016062121A1 - 一种电池切换方法、电池管理系统及电源装置 - Google Patents

一种电池切换方法、电池管理系统及电源装置 Download PDF

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Publication number
WO2016062121A1
WO2016062121A1 PCT/CN2015/083539 CN2015083539W WO2016062121A1 WO 2016062121 A1 WO2016062121 A1 WO 2016062121A1 CN 2015083539 W CN2015083539 W CN 2015083539W WO 2016062121 A1 WO2016062121 A1 WO 2016062121A1
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Prior art keywords
battery
battery pack
power
priority
set level
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PCT/CN2015/083539
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English (en)
French (fr)
Inventor
祝凌云
李斌
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北京凌云智能科技有限公司
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Publication of WO2016062121A1 publication Critical patent/WO2016062121A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B60L58/13Maintaining the SoC within a determined range
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18Methods 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
    • B60L58/22Balancing the charge of battery modules
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/00712Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H02J7/007186Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage obtained with the battery disconnected from the charge or discharge circuit
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT 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
    • H02J9/061Circuit 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 for DC powered loads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2250/00Driver interactions
    • B60L2250/16Driver interactions by display
    • 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
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to power management technologies, and in particular, to a battery switching method, a battery management system, and a power supply device.
  • Embodiments of the present invention provide a battery switching method, a battery management system, and a power supply device, so as to facilitate battery life, thereby facilitating user use.
  • a battery switching method includes:
  • the battery pack according to the priority and the power level of each group of battery groups is selected, and the battery pack includes:
  • the battery pack with the highest priority among the battery packs whose power is higher than the set level is the battery pack that meets the priority and power requirements.
  • the method further includes:
  • the determining that the power of the battery pack currently supplying power to the device is lower than a set level, specifically:
  • the switching to the selected battery group to supply power to the device includes:
  • a disconnect command is sent to the packet management subsystem of the battery pack currently powering the device, and a turn-on command is sent to the packet management subsystem of the selected battery pack.
  • a battery management system comprising:
  • a determining unit configured to determine that a battery pack currently powering the device is lower than a set level
  • a selecting unit configured to select, according to the priority and the amount of power of each group of battery groups, a battery group that meets the priority and the power requirement from the standby at least one battery group;
  • a switching unit for switching to the selected battery pack to power the device.
  • selecting unit is specifically configured to:
  • the battery pack with the highest priority among the battery packs whose power is higher than the set level is the battery pack that meets the priority and power requirements.
  • the selecting unit determines that there is no battery pack whose power is higher than the set level
  • the selecting unit is further configured to:
  • the determining unit is specifically configured to:
  • the switching unit is specifically configured to:
  • a disconnect command is sent to the packet management subsystem of the battery pack currently powering the device, and a turn-on command is sent to the packet management subsystem of the selected battery pack.
  • a power supply device comprising:
  • Battery management system and at least two battery packs of which:
  • a battery management system configured to determine that a battery pack currently supplying power to the device is lower than a set level, and select a set of priorities according to priority and power of each set of battery packs from at least one set of spare battery packs A battery pack that requires power to switch to the selected battery pack to power the device.
  • the battery pack specifically includes:
  • a battery pack for storing electrical energy
  • Battery management subsystem for battery temperature management, charge and discharge management and balance management
  • a packet management subsystem is configured to detect a power condition of the battery group and turn the circuit on or off according to a command of the battery management system.
  • the battery pack specifically includes:
  • a battery pack housing and a battery pack housing cover a plurality of battery cells disposed in the battery pack housing, a battery management subsystem and a group management subsystem, a battery pack data interface and a battery pack connected to the group management subsystem Output Interface.
  • the battery pack further includes:
  • the power supply device further includes:
  • a chute corresponding to each battery pack and a battery data interface and a battery pack output interface are provided for fixing the battery management system and the battery pack.
  • Embodiments of the present invention provide a battery switching method, a battery management system, and a power supply device, which are configured to set at least two sets of battery packs, according to the priority of each group of battery packs when the current state of the battery pack that supplies power to the device is lower than a set level. And the power, select a set of battery packs that meet the priority and power requirements, and switch to the selected battery pack to power the device, which is convenient for battery life and convenient for users.
  • FIG. 1 is a flowchart of a battery switching method according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a battery management system according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a power supply device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a specific power supply device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a battery pack according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a battery core group according to an embodiment of the present invention.
  • FIG. 7 is a second schematic structural diagram of a battery pack according to an embodiment of the present invention.
  • FIG. 8 is a second schematic structural diagram of a power supply device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a slide rail housing according to an embodiment of the present invention.
  • Embodiments of the present invention provide a battery switching method, a battery management system, and a power supply device, which are configured to set at least two sets of battery packs, according to the priority of each group of battery packs when the current state of the battery pack that supplies power to the device is lower than a set level. And the power, select a set of battery packs that meet the priority and power requirements, and switch to the selected battery pack to power the device, which is convenient for battery life and convenient for users.
  • a battery switching method provided by an embodiment of the present invention includes:
  • Step S101 determining that the battery capacity of the battery pack currently powered by the device is lower than a set level
  • Step S102 Select, from the standby at least one battery group, a battery group that meets the priority and the power requirement according to the priority and the power of each battery group;
  • Step S103 Switch to the selected battery pack to supply power to the device.
  • This method is suitable for power supply of electric vehicles and can also be applied to other equipment.
  • a separate battery pack is used to power the device, and other battery packs do not participate in the power supply.
  • a battery pack When a battery pack is discharged, it is powered by the next battery pack.
  • Each battery pack can be completely discharged in one discharge cycle, which greatly improves the utilization of the battery, reduces the charge and discharge cycle, and thus improves the battery. life.
  • Each battery pack can be charged separately, independent of the power of other battery packs, and is convenient for users to charge. Further, each battery pack can be designed in a detachable form, and each battery pack can be It is more convenient for the user to use by taking out and charging.
  • a battery group that meets the priority and the power requirement is selected according to the priority and the power of each battery group, and specifically includes:
  • the battery pack with the highest priority among the battery packs whose power is higher than the set level is the battery pack that meets the priority and power requirements.
  • the method also includes:
  • the power of each battery pack exceeds the new set level, and the device can continue to be used.
  • lowering the value of the set level it can be performed according to a certain gradient, or it can be lowered to a lower value at a time.
  • step S101 it is determined that the battery capacity of the battery pack currently powered by the device is lower than a set level, which may be specifically:
  • step S103 switching to the selected battery group to supply power to the device includes:
  • a disconnect command is sent to the packet management subsystem of the battery pack currently powering the device, and a turn-on command is sent to the packet management subsystem of the selected battery pack.
  • the group management subsystem may be disposed on the battery management system side or in the battery pack. To facilitate management of the battery pack, the group management subsystem is preferably disposed in the battery pack.
  • the battery pack is also provided with a battery management subsystem for temperature management, charge and discharge management, and balance management, so that the user can separately perform maintenance management on each battery pack.
  • the embodiment of the present invention further provides a battery management system, as shown in FIG. 2, including:
  • the determining unit 201 is configured to determine that the battery capacity of the battery pack currently powered by the device is lower than a set level
  • the selecting unit 202 is configured to select, from the spare at least one battery group, a battery group that meets the priority and the power requirement according to the priority and the power of each battery group;
  • the switching unit 203 is configured to switch to the selected battery pack to supply power to the device.
  • the selecting unit 202 is specifically configured to:
  • the battery pack with the highest priority among the battery packs whose power is higher than the set level is the battery pack that meets the priority and power requirements.
  • the selection unit 202 determines that there is no battery pack whose power is higher than the set level, the selection unit 202 is further configured to:
  • the determining unit 201 is specifically configured to:
  • the switching unit 203 is specifically configured to:
  • a disconnect command is sent to the packet management subsystem of the battery pack currently powering the device, and a turn-on command is sent to the packet management subsystem of the selected battery pack.
  • the embodiment of the invention further provides a power supply device, as shown in FIG. 3, comprising:
  • the battery management system 301 is configured to determine that the power of the battery pack 302 currently supplying power to the device is lower than a set level, and select a group from the standby at least one battery pack 302 according to the priority and the power of each battery pack 302.
  • the battery pack 302 that meets the priority and power requirements switches to the selected battery pack 302 to supply power to the device.
  • the battery pack 302 specifically includes:
  • the battery management subsystem 3022 is configured to perform temperature management, charge and discharge management, and balance management of the battery;
  • the packet management subsystem 3023 is configured to detect a power condition of the battery group and turn the circuit on or off according to a command of the battery management system.
  • the battery management subsystem 3022 may further include a temperature management module, a discharge management module, a charge management module, and a balance management module, and implementation of specific functions of each module is well known to those skilled in the art. No more details; the group management subsystem 3023 can further Including current detection circuit, MOS switch circuit and relay.
  • the current detecting circuit is configured to detect the operating current of the battery pack and transmit the data to the packet battery management system.
  • the battery management system determines the battery current according to the state of the battery group transmitted by the battery management subsystem and the operating current transmitted by the operating current detecting circuit. Whether the battery pack's power is lower than the set level.
  • the battery group can be connected in parallel by two or more batteries, and then connected in series, or can be directly connected in series by a single battery core, and the A1, A2, and A3 ports are connected to the battery management subsystem 3022.
  • the discharge management module, the charge management module, and the balance management module; the T1, T2, T3, and T4 ports are connected to the temperature management module of the battery management subsystem 3022.
  • the battery group can be connected in parallel by three batteries, and the four modules in parallel are connected in series. Power is transferred to the battery management subsystem through the positive and negative poles.
  • the battery management subsystem reads the voltage of each group of parallel batteries through data lines A1, A2, and A3, and reads the temperature of each group of parallel cells through temperature sensor outputs T1, T2, T3, and T4.
  • the battery management subsystem directly transmits the state of the battery pack to the packet battery management system via the RS485 data path.
  • the power of the battery pack needs to be connected to the battery management system through the group management subsystem.
  • the battery pack 302 specifically includes:
  • the battery cells 7 are connected in series and then fixed in the battery pack casing 4 by brackets and bolts.
  • the battery management subsystem 8 and the group management subsystem 9 are fixed in the battery pack casing 4 by bolts, and the battery pack data interface 10 and the battery pack output interface 11 are fixed to the bottom of the battery pack casing 4 by bolts, and the battery pack casing cover 5 is bolted. It is fixed to the front of the battery pack case 4.
  • the power supply device can be designed as shown in FIG. 8, including the battery pack 1, the slide rail housing 2, and the battery management system 3.
  • the battery pack can be mounted to the slide rail housing through the slide rail, the battery The management system can be bolted to the outside of the rail housing.
  • the battery pack further includes:
  • the slide rail 12 can be fixed to both sides of the battery pack case 4 by bolts, and the handle 6 is fixed to the top of the battery pack case 4 by bolts.
  • the slide rail housing 2 is provided with a chute 14 corresponding to each battery pack, a battery pack data interface 15, and a battery pack output interface 14.
  • the inner side of the rail housing 2 is bolted to the sliding slot, and the battery data interface 15 and the battery output interface 14 are fixed to the bottom of the sliding rail housing 2 by bolts.
  • the MOS switch circuits and relays in the group management subsystem of all battery packs are off.
  • the battery management system first detects the status of each battery pack. If all the battery packs are in the normal state, the battery pack 1 with the highest priority is activated to operate. When the battery management system starts to operate the battery pack 1, first The control relay is closed, and then the control MOS switch circuit is turned on, at which time the startup process is completed. Battery pack 1 is in operation and the other battery packs are off.
  • the battery management system When the energy of the battery pack 1 is about to be exhausted, the battery management system reads that the voltage of the battery pack 1 is lower than the set value, first turns off the battery pack 1, and then starts the battery pack 2 with the second highest priority to operate.
  • the battery management system first controls the MOS switch circuit in the packet management subsystem of the battery pack 1 to be disconnected, and then controls the relay in the packet management subsystem of the battery pack 2 to be closed, and then controls.
  • the MOS switch circuit in the battery pack 2 is turned on, and finally the relay in the battery pack 1 is turned off. At this point, the switching process is completed, the battery pack 2 is in the working state, and the other battery packs are in the disconnected state.
  • the cells are connected in series and connected, they are fixed in the battery case by brackets and bolts.
  • the battery management subsystem and the group management subsystem are bolted in the battery case, and the battery data interface and the battery output interface are bolted to the bottom of the battery case, and the slide rails are fixed to both sides of the battery case by bolts.
  • the battery pack cover is bolted to the front of the battery pack housing.
  • the inner side of the rail housing is bolted to the rail, battery interface and data interface. It is bolted to the bottom of the rail housing.
  • Embodiments of the present invention provide a battery switching method, a battery management system, and a power supply device, which are configured to set at least two sets of battery packs, according to the priority of each group of battery packs when the current state of the battery pack that supplies power to the device is lower than a set level. And the power, select a set of battery packs that meet the priority and power requirements, and switch to the selected battery pack to power the device, which is convenient for battery life and convenient for users.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

一种电池切换方法、电池管理系统及电源装置。该电池切换方法包括:确定当前为设备供电的电池组的电量低于设定水平(S101),根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组(S102),并切换到所选电池组为设备供电(S103),从而便于进行电池续航,方便了用户的使用。

Description

一种电池切换方法、电池管理系统及电源装置 技术领域
本发明涉及电源管理技术,尤其涉及一种电池切换方法、电池管理系统及电源装置。
背景技术
在环境污染日益严重,能源不断紧缩的今天,纯电动汽车逐渐成为行业发展的新趋势。但是,纯电动汽车的续航和电池补给问题使电动汽车发展遇到了巨大的障碍。
目前的电动汽车通常使用整组电池作为能量供给,体积大,重量重,不易更换。当电池电量耗尽时,需要专用的充电桩才能进行充电。由于充电桩的数量非常有限,并且整组电池充电时间长,不便于用户的使用,进而严重制约了纯电动汽车的发展。
发明内容
本发明实施例提供一种电池切换方法、电池管理系统及电源装置,以便于进行电池续航,进而便于用户使用。
一种电池切换方法,包括:
确定当前为设备供电的电池组的电量低于设定水平;
从备用的至少一组电池组中,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组;
切换到所选电池组为所述设备供电。
进一步,所述根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组,具体包括:
确定电量高于设定水平的电池组中优先级最高的电池组,为符合优先级及电量要求的电池组。
较佳的,当不存在电量高于设定水平的电池组时,还包括:
降低所述设定水平数值。
较佳的,所述确定当前为设备供电的电池组的电量低于设定水平,具体为:
确定当前为设备供电的电池组的输出电压低于设定值。
进一步,所述切换到所选电池组为所述设备供电,具体包括:
向当前为设备供电的电池组的分组管理子系统发送断开指令,并向所选电池组的分组管理子系统发送接通指令。
一种电池管理系统,包括:
确定单元,用于确定当前为设备供电的电池组的电量低于设定水平;
选择单元,用于从备用的至少一组电池组中,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组;
切换单元,用于切换到所选电池组为所述设备供电。
进一步,所述选择单元具体用于:
确定电量高于设定水平的电池组中优先级最高的电池组,为符合优先级及电量要求的电池组。
较佳的,当所述选择单元确定不存在电量高于设定水平的电池组时,所述选择单元还用于:
降低所述设定水平数值。
较佳的,所述确定单元具体用于:
确定当前为设备供电的电池组的输出电压低于设定值。
进一步,所述切换单元具体用于:
向当前为设备供电的电池组的分组管理子系统发送断开指令,并向所选电池组的分组管理子系统发送接通指令。
一种电源装置,包括:
电池管理系统及至少两个电池组,其中:
电池管理系统,用于确定当前为设备供电的电池组的电量低于设定水平,从备用的至少一组电池组中,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组,切换到所选电池组为所述设备供电。
进一步,所述电池组具体包括:
电芯组,用于存储电能;
电池管理子系统,用于进行电池的温度管理、充放电管理及均衡管理;
分组管理子系统,用于检测电芯组的电量情况及根据所述电池管理系统的命令接通或断开电路。
进一步,所述电池组具体包括:
电池组外壳及电池组外壳盖板,设置在所述电池组外壳中的多个电芯、电池管理子系统及分组管理子系统,与所述分组管理子系统连接的电池组数据接口及电池组输出接口。
更进一步,所述电池组还包括:
设置在所述电池组外壳上的滑轨以及对应所述滑轨设置在电池组外壳上的提手;
所述电源装置还包括:
设置有与各电池组相应的滑槽及电池组数据接口、电池组输出接口的外壳,用于固定所述电池管理系统及所述电池组。
本发明实施例提供一种电池切换方法、电池管理系统及电源装置,设置至少两组电池组,在当前为设备供电的电池组的电量低于设定水平时,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组,并切换到所选电池组为设备供电,从而便于进行电池续航,方便了用户的使用。
附图说明
图1为本发明实施例提供的电池切换方法流程图;
图2为本发明实施例提供的电池管理系统结构示意图;
图3为本发明实施例提供的电源装置结构示意图之一;
图4为本发明实施例提供的较具体的电源装置结构示意图;
图5为本发明实施例提供的电池组结构示意图之一;
图6为本发明实施例提供的电芯组结构示意图;
图7为本发明实施例提供的电池组结构示意图之二;
图8为本发明实施例提供的电源装置结构示意图之二;
图9为本发明实施例提供的滑轨外壳结构示意图。
具体实施方式
本发明实施例提供一种电池切换方法、电池管理系统及电源装置,设置至少两组电池组,在当前为设备供电的电池组的电量低于设定水平时,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组,并切换到所选电池组为设备供电,从而便于进行电池续航,方便了用户的使用。
如图1所示,本发明实施例提供的电池切换方法,包括:
步骤S101、确定当前为设备供电的电池组的电量低于设定水平;
步骤S102、从备用的至少一组电池组中,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组;
步骤S103、切换到所选电池组为设备供电。
该方法适用于电动车的供电,也可以应用在其它设备上。
通过该切换方法,使用独立的一个电池组为设备供电,其它电池组不参与供电。当一个电池组放电完成后,再由下一个电池组供电,每个电池组在一个放电循环内都可以完全放电,极大的提高了电池的利用率,降低了充放电循环,从而提高电池的寿命。
每个电池组均可以单独充电,不受其它电池组电量的影响,便于用户进行充电,进一步,还可以将各个电池组设计为可以拆卸的形式,每个电池组都可 以取出进行充电,更加方便了用户的使用。
为进一步提高用户的使用体验,步骤S102中,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组,具体包括:
确定电量高于设定水平的电池组中优先级最高的电池组,为符合优先级及电量要求的电池组。
当所有的电池组均电量不足时,为避免用户完全不能使用,该方法还包括:
当不存在电量高于设定水平的电池组时,降低设定水平数值。
在电量的设定水平降低后,各个电池组的电量均超过了新的设定水平,可以继续使用设备。
降低设定水平的数值时,可以按照一定的梯度进行,也可以一次降低到较低的数值。
在步骤S101中,确定当前为设备供电的电池组的电量低于设定水平,可以具体为:
确定当前为设备供电的电池组的输出电压低于设定值。当然,本领域技术人员也可以参考其他参数确定电池组的电量是否低于设定水平。
进一步,步骤S103中,切换到所选电池组为设备供电,具体包括:
向当前为设备供电的电池组的分组管理子系统发送断开指令,并向所选电池组的分组管理子系统发送接通指令。
分组管理子系统可以设置在电池管理系统侧,也可以设置在电池组中,为便于对电池组进行管理,分组管理子系统设置在电池组中较佳。
电池组中还设置有进行温度管理、充放电管理及均衡管理的电池管理子系统,以便于用户分别对各个电池组进行维护管理。
本发明实施例还相应提供一种电池管理系统,如图2所示,包括:
确定单元201,用于确定当前为设备供电的电池组的电量低于设定水平;
选择单元202,用于从备用的至少一组电池组中,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组;
切换单元203,用于切换到所选电池组为设备供电。
其中,选择单元202具体用于:
确定电量高于设定水平的电池组中优先级最高的电池组,为符合优先级及电量要求的电池组。
为进一步便于用户的使用,当选择单元202确定不存在电量高于设定水平的电池组时,选择单元202还用于:
降低设定水平数值。
进一步,确定单元201具体用于:
确定当前为设备供电的电池组的输出电压低于设定值。
进一步,切换单元203具体用于:
向当前为设备供电的电池组的分组管理子系统发送断开指令,并向所选电池组的分组管理子系统发送接通指令。
本发明实施例还提供一种电源装置,如图3所示,包括:
电池管理系统301及至少两个电池组302,其中:
电池管理系统301,用于确定当前为设备供电的电池组302的电量低于设定水平,从备用的至少一组电池组302中,根据各组电池组302的优先级以及电量,选择一组符合优先级及电量要求的电池组302,切换到所选电池组302为设备供电。
进一步,如图4所示,电池组302具体包括:
电芯组3021,用于存储电能;
电池管理子系统3022,用于进行电池的温度管理、充放电管理及均衡管理;
分组管理子系统3023,用于检测电芯组的电量情况及根据电池管理系统的命令接通或断开电路。
更进一步,如图5所示,电池管理子系统3022可进一步包括温度管理模块、放电管理模块、充电管理模块、均衡管理模块,各模块具体的功能的实现以为本领域技术人员所熟知,在此不再赘述;分组管理子系统3023可进一步 包括电流检测电路、MOS开关电路和继电器。
电流检测电路用来检测电池组的工作电流,并将此数据传输给分组电池管理系统,电池管理系统根据电池管理子系统传输的电芯组状态和工作电流检测电路传输来的工作电流,来确定该电池组的电量是否低于设定水平。
如图6所示,电芯组可以由2个或者多个电芯进行并联后,然后串联在一起,也可以由单个电芯直接进行串联,A1,A2,A3端口连接电池管理子系统3022的放电管理模块、充电管理模块和均衡管理模块;T1,T2,T3,T4端口连接电池管理子系统3022的温度管理模块。
例如,,电芯组可以由3个电芯并联,并联后的4个模组再进行串联。通过正负极将电能传输给电池管理子系统。同时如图6所示,电池管理子系统通过数据线A1,A2,A3读取每组并联电池的电压,通过温度传感器输出T1,T2,T3,T4读取每组并联电芯的温度。电池管理子系统通过RS485数据通路将电芯组的状态直接传输给分组电池管理系统。而电芯组的电能则需要通过分组管理子系统后连接电池管理系统。
如图7所示,电池组302具体包括:
电池组外壳4及电池组外壳盖板5,设置在电池组外壳4中的多个电芯7、电池管理子系统8及分组管理子系统9,与分组管理子系统9连接的电池组数据接口10及电池组输出接口11。
电芯7进行并串联接后,通过支架和螺栓固定在电池组外壳4内。电池管理子系统8和分组管理子系统9通过螺栓固定在电池组外壳4内,电池组数据接口10和电池组输出接口11通过螺栓固定在电池组外壳4底部,电池组外壳盖板5通过螺栓固定在电池组外壳4正面。
为便于用户拆卸电池组,电源装置可以设计为如图8所示的结构,包括电池组1、滑轨外壳2和电池管理系统3,电池组可以通过滑轨安装到到滑轨外壳里,电池管理系统可以通过螺栓固定在滑轨外壳外面。此时,如图7所示,电池组还包括:
设置在电池组外壳上的滑轨12以及对应滑轨设置在电池组外壳上的提手6。滑轨12可以通过螺栓固定在电池组外壳4两侧,提手6通过螺栓固定在电池组外壳4顶部。
如图9所示,滑轨外壳2上设置有与各电池组相应的滑槽14及电池组数据接口15、电池组输出接口14。滑轨外壳2内部侧面用螺栓固定滑槽,电池组数据接口15、电池组输出接口14通过螺栓固定在滑轨外壳2底部。
在电源关闭状态时,所有电池组的分组管理子系统中的MOS开关电路和继电器均处于断开状态。当启动电源后,电池管理系统首先检测每个电池组的状态,如果所有的电池组状态都正常,则启动优先级最高的电池组1进行工作,电池管理系统在启动电池组1工作时,首先控制继电器闭合,然后控制MOS开关电路接通,此时,启动过程完成。电池组1处于工作状态,其它电池组处于断开状态。
当电池组1的能量即将耗尽时,电池管理系统读取到电池组1的电压低于设定值,先关闭电池组1,然后启动优先级次高的电池组2进行工作。电池管理系统在切换电池组1至电池组2工作时,首先控制电池组1中分组管理子系统中的MOS开关电路断开,然后控制电池组2中分组管理子系统中的继电器闭合,再控制电池组2中的MOS开关电路接通,最后控电池组1中的继电器断开。此时切换过程完成,电池组2处于工作状态,其它电池组处于断开状态。
电池组2电量不足时,后续的切换过程相同,直至切换至最后一个电池组。
每个电池组能量耗尽时,都可以在设备停止运行后取下充电。
如图5所示,电芯进行并串联接后,通过支架和螺栓固定在电池组外壳内。电池管理子系统和分组管理子系统通过螺栓固定在电池组外壳内,电池组数据接口和电池组输出接口通过螺栓固定在电池组外壳底部,滑轨通过螺栓固定在电池组外壳两侧,提手通过螺栓固定在电池组外壳顶部,电池组外壳盖板通过螺栓固定在电池组外壳正面。
如图6所示,滑轨外壳内部侧面用螺栓固定这滑轨,电池接口和数据接口 通过螺栓固定在滑轨外壳底部。
本发明实施例提供一种电池切换方法、电池管理系统及电源装置,设置至少两组电池组,在当前为设备供电的电池组的电量低于设定水平时,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组,并切换到所选电池组为设备供电,从而便于进行电池续航,方便了用户的使用。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基 本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (14)

  1. 一种电池切换方法,其特征在于,包括:
    确定当前为设备供电的电池组的电量低于设定水平;
    从备用的至少一组电池组中,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组;
    切换到所选电池组为所述设备供电。
  2. 如权利要求1所述的方法,其特征在于,所述根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组,具体包括:
    确定电量高于设定水平的电池组中优先级最高的电池组,为符合优先级及电量要求的电池组。
  3. 如权利要求2所述的方法,其特征在于,当不存在电量高于设定水平的电池组时,还包括:
    降低所述设定水平数值。
  4. 如权利要求1所述的方法,其特征在于,所述确定当前为设备供电的电池组的电量低于设定水平,具体为:
    确定当前为设备供电的电池组的输出电压低于设定值。
  5. 如权利要求1所述的方法,其特征在于,所述切换到所选电池组为所述设备供电,具体包括:
    向当前为设备供电的电池组的分组管理子系统发送断开指令,并向所选电池组的分组管理子系统发送接通指令。
  6. 一种电池管理系统,其特征在于,包括:
    确定单元,用于确定当前为设备供电的电池组的电量低于设定水平;
    选择单元,用于从备用的至少一组电池组中,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组;
    切换单元,用于切换到所选电池组为所述设备供电。
  7. 如权利要求6所述的系统,其特征在于,所述选择单元具体用于:
    确定电量高于设定水平的电池组中优先级最高的电池组,为符合优先级及电量要求的电池组。
  8. 如权利要求7所述的系统,其特征在于,当所述选择单元确定不存在电量高于设定水平的电池组时,所述选择单元还用于:
    降低所述设定水平数值。
  9. 如权利要求6所述的系统,其特征在于,所述确定单元具体用于:
    确定当前为设备供电的电池组的输出电压低于设定值。
  10. 如权利要求6所述的系统,其特征在于,所述切换单元具体用于:
    向当前为设备供电的电池组的分组管理子系统发送断开指令,并向所选电池组的分组管理子系统发送接通指令。
  11. 一种电源装置,其特征在于,包括:
    电池管理系统及至少两个电池组,其中:
    电池管理系统,用于确定当前为设备供电的电池组的电量低于设定水平,从备用的至少一组电池组中,根据各组电池组的优先级以及电量,选择一组符合优先级及电量要求的电池组,切换到所选电池组为所述设备供电。
  12. 如权利要求11所述的电源装置,其特征在于,所述电池组具体包括:
    电芯组,用于存储电能;
    电池管理子系统,用于进行电池的温度管理、充放电管理及均衡管理;
    分组管理子系统,用于检测电芯组的电量情况及根据所述电池管理系统的命令接通或断开电路。
  13. 如权利要求11所述的电源装置,其特征在于,所述电池组具体包括:
    电池组外壳及电池组外壳盖板,设置在所述电池组外壳中的多个电芯、电池管理子系统及分组管理子系统,与所述分组管理子系统连接的电池组数据接口及电池组输出接口。
  14. 如权利要求13所述的电源装置,其特征在于,所述电池组还包括:
    设置在所述电池组外壳上的滑轨以及对应所述滑轨设置在电池组外壳上 的提手;
    所述电源装置还包括:
    设置有与各电池组相应的滑槽及电池组数据接口、电池组输出接口的外壳,用于固定所述电池管理系统及所述电池组。
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