WO2021190196A1 - 并联电池组充放电管理方法、电子装置及电气系统 - Google Patents

并联电池组充放电管理方法、电子装置及电气系统 Download PDF

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Publication number
WO2021190196A1
WO2021190196A1 PCT/CN2021/076382 CN2021076382W WO2021190196A1 WO 2021190196 A1 WO2021190196 A1 WO 2021190196A1 CN 2021076382 W CN2021076382 W CN 2021076382W WO 2021190196 A1 WO2021190196 A1 WO 2021190196A1
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Prior art keywords
charge
battery packs
battery pack
power bus
charging
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PCT/CN2021/076382
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English (en)
French (fr)
Inventor
钟弟
曾思
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东莞新能安科技有限公司
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Publication date
Application filed by 东莞新能安科技有限公司 filed Critical 东莞新能安科技有限公司
Priority to AU2021202731A priority Critical patent/AU2021202731B2/en
Priority to EP21776075.0A priority patent/EP4131706A4/en
Priority to KR1020217009259A priority patent/KR102659479B1/ko
Priority to JP2021517969A priority patent/JP7244635B2/ja
Priority to US17/281,667 priority patent/US11949273B2/en
Publication of WO2021190196A1 publication Critical patent/WO2021190196A1/zh

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    • 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
    • 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
    • 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
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0025Sequential battery discharge in systems with a plurality of batteries
    • 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
    • H02J7/0068Battery or charger load switching, e.g. concurrent charging and load supply
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16542Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3835Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • H01M10/441Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • 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
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • 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
    • H02J7/0047Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • 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
    • H02J7/0047Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • H02J7/0047Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/005Detection of state of health [SOH]
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the solutions in the prior art have the following shortcomings: 1.
  • the battery pack voltage needs to be adjusted manually, and the parallel connection of the battery packs is not smart enough, which increases the complexity and cost of installation and debugging; 2.
  • the battery pack The parameter in parallel connection is single, and the charging and discharging current is not limited, resulting in the same voltage between the battery packs in parallel but the actual capacity difference is large. Circulating high current causes damage and damage.
  • the reference voltage value may be obtained by the following method: when none of the multiple battery packs is connected to the power bus, the minimum value of the voltage values of the multiple battery packs is used as the reference value.
  • the reference voltage value when none of the multiple battery packs is connected to the power bus, the minimum value of the voltage values of the multiple battery packs is used as the reference value. The reference voltage value.
  • I discharge a ⁇ k 2 ⁇ P m ;
  • the step of performing charge and discharge management on the plurality of battery packs according to the comparison result further includes: when at least one battery pack is connected to the power bus and the battery packs not connected to the power bus are in discharging In the state, it is determined whether the difference between the reference voltage value and the voltage value of the battery pack not connected to the power bus is within the third interval and the reference state of charge is compared with the charge of the battery pack not connected to the power bus.
  • the difference between the electrical states is within the fourth interval; if the difference between the reference voltage value and the voltage value of the battery pack that is not connected to the power bus is within the third interval and the reference state of charge The difference between the state of charge and the state of charge of the battery pack not connected to the power bus is in the fourth interval, and the battery pack is controlled to be connected to the power bus in sequence.
  • the parallel battery pack charging and discharging management method further includes: when the battery pack has a fault alarm, receiving the fault alarm information; Cut out the power bus separately.
  • the electronic device further includes a plurality of switches corresponding to the plurality of battery packs one-to-one, and each of the switches is connected between the battery pack and the energy storage inverter.
  • the parallel battery pack charging and discharging management method, electronic device, and electrical system obtained the voltage values and state of charge of multiple battery packs, and compare the voltage values and state of charge of the battery packs with reference The voltage value is compared with the reference state of charge, and then the charge and discharge management of the plurality of battery packs is performed according to the comparison result.
  • the technical solution provided by the present application can improve the degree of automation of parallel battery packs, enhance the adaptability of the parallel system, improve the execution efficiency of the parallel, further reduce operation and maintenance costs, and improve user experience.
  • FIG. 1 is a schematic diagram of a parallel system architecture of parallel battery packs according to an embodiment of the present application.
  • FIG. 3 is a flowchart of a charging and discharging management method for parallel battery packs according to another embodiment of the present application.
  • FIG. 4 is a flowchart of a method for charging and discharging parallel battery packs according to another embodiment of the present application.
  • Fig. 6 is a flowchart of a charging and discharging management method for parallel battery packs according to another embodiment of the present application.
  • Fig. 7 is a block diagram of a charging and discharging management system for parallel battery packs according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a system architecture for paralleling battery packs 10 in parallel according to an embodiment of the present application.
  • the embodiment of the present application provides an electrical system, and the electrical system includes an electronic device 100 and an energy storage inverter 20.
  • the electronic device 100 in the embodiment of the present application is electrically connected to the energy storage inverter 20, and the electronic device 100 may include a battery pack 10 in parallel.
  • the parallel battery pack 10 may include a plurality of battery packs connected in parallel (FIG. 1 only uses three battery packs 10a, 10b, and 10c as an example for illustration, and there may be more than three or less than three).
  • Each battery pack 10a, 10b, 10c includes a positive electrode B+ and a negative electrode B-.
  • the positive electrode B+ of each battery pack 10a-10c is connected together to form the positive electrode of the parallel battery pack 10, and the negative electrode B- of each battery pack 10a-10c Connected together to form the negative electrode of the parallel battery pack 10.
  • the output of the parallel battery pack 10 is converged to the DC input side of the energy storage inverter 20.
  • the negative pole B- of each battery pack 10a, 10b, 10c is electrically connected to the power bus P- of the energy storage inverter 20, and the positive pole B+ of each battery pack 10a, 10b, 10c is electrically connected through the switch K. Connected to the power bus P+ of the energy storage inverter 20.
  • the number of the switches is the same as the number of the battery packs and corresponds to one-to-one. That is, the power lines of each battery pack can be connected in parallel to the power buses P+ and P- through the corresponding switch K.
  • each battery pack 10a, 10b, 10c further includes an internal bus interface and an external bus interface.
  • the internal bus interface can realize the internal bus communication function
  • the external bus interface can realize the external bus communication function. It is understandable that the internal bus communication function can be used to realize the internal communication between each battery pack 10a-10c, and the external bus communication function can be used to realize the communication between the host and the energy storage inverter 20.
  • the internal bus and the external bus may be a CAN communication bus or an RS485 communication bus.
  • one of the battery packs in the parallel battery pack 10 may be a master, and the remaining battery packs may be slaves.
  • each battery pack may be provided with a battery management unit, and each battery pack is managed by a corresponding battery management unit. That is, in the embodiment of the present application, the switch states of the plurality of switches K can be controlled by the corresponding battery management unit, respectively.
  • the battery pack 10a is a master, and the battery packs 10b and 10c are slaves.
  • the battery pack 10a is provided with a battery management unit BMU1, and the battery packs 10b and 10c are respectively provided with battery management units BMU2 and BMU3.
  • the battery management unit in the slave machine sends the data information and status of the corresponding battery pack to the battery management unit in the master through the internal bus. Therefore, the battery management unit in the host can summarize and analyze the data information and status of each battery management unit (including the battery management unit of the host), and calculate the corresponding control parameters, and then manage each battery separately through the internal bus The unit is controlled, and at the same time, data interaction and operation scheduling can be performed with the energy storage inverter 20 through an external bus.
  • FIG. 2 is a flow chart of the steps of a charging and discharging management method for parallel battery packs according to an embodiment of the present application.
  • the charging and discharging management method of parallel battery packs may include the following steps.
  • Step S21 Obtain the voltage values and state of charge of multiple battery packs.
  • the battery management unit of each slave sends the data information and status of the corresponding battery pack to the battery management unit of the master via the internal bus.
  • the battery management unit BMU1 in the battery pack 10a may obtain the voltage values and the state of charge of the battery packs 10b and 10c through the battery management units BMU2 and BMU3.
  • SOC State of Charge
  • Step S22 Compare the voltage value and the state of charge of the battery pack with the reference voltage value and the reference state of charge, respectively.
  • the total voltage value of each battery pack needs to be compared with the reference voltage value, and the state of charge of each battery pack needs to be compared with the reference state of charge.
  • the reference voltage value and the reference state of charge of the power dynamic parallel machine are both calculated by the battery management unit of the host.
  • the reference voltage value can be obtained by the following method: if none of the plurality of battery packs 10a-10c is connected to the power bus, the voltage values of the plurality of battery packs 10a-10c The minimum value in can be used as the reference voltage value.
  • the reference voltage value can also be obtained by the following method: if there is already power cut into the power bus in the plurality of battery packs 10a-10c, that is, all the power buses that have been connected to the power bus are used. The minimum value among the voltage values of the battery pack is used as the reference voltage value.
  • the reference state of charge can also be obtained by the following method: if there is already power cut into the power bus in the multiple battery packs 10a-10c, that is, the power bus is connected to the power bus. The minimum value of the state of charge of the battery pack is used as the reference state of charge.
  • Step S23 Perform charge and discharge management on the multiple battery packs according to the comparison result.
  • the battery management unit of the host compares the voltage value and the state of charge of the battery pack with the reference voltage value and the reference state, respectively.
  • the electrical status is compared, and the charge and discharge management of the plurality of battery packs can be performed according to the comparison result.
  • Power dynamic paralleling requires the cooperation of the energy storage inverter, that is, during the dynamic paralleling of the battery pack, the energy storage inverter needs to be charged or discharged according to the current limit value calculated by the battery management unit of the host.
  • the battery management unit of the host computer calculates the charging current limit value and the discharge current limit value, which can be specifically carried out through the following steps:
  • Step S31 Obtain the number of the battery packs connected to the power bus.
  • the battery management unit of the host obtains the number of the battery packs that have been cut into the power bus.
  • Step S32 Determine the charging current limit value and the discharging current limit value of the energy storage inverter.
  • the charging current limit value of the energy storage inverter is denoted as I charge
  • the discharge current limit value is denoted as I discharge .
  • the charging current limit value I charge satisfies the following formula:
  • I charge a ⁇ k 1 ⁇ P m (1)
  • a is the 1C current of the battery pack
  • k 1 is the charging current limit coefficient
  • P m is the number of the battery packs that have been cut into the power bus.
  • discharge current limit value I discharge satisfies the following formula:
  • I discharge a ⁇ k 2 ⁇ P m (2)
  • a is the 1C current of the battery pack
  • k 2 is the discharge current limiting coefficient
  • P m is the number of the battery packs connected to the power bus.
  • the battery management unit determines the plurality of battery packs according to the comparison result of the voltage value and the state of charge of the battery pack with the reference voltage value and the reference state of charge
  • the charging and discharging management method can specifically adopt the following method steps:
  • Step S41 It is determined that none of the multiple battery packs is connected to the power bus.
  • the battery management unit of the master can determine whether the multiple battery packs are not connected to the power bus according to the data information and status of the battery pack fed back by the battery management unit of each slave machine.
  • the battery management unit BMU 1 of the battery pack 10a will The charge current limit value I charge and the discharge current limit value I discharge are both 0 sent to the energy storage inverter through the external bus.
  • the reference voltage value of the power dynamic parallel operation will be determined as the minimum value among the voltage values of the multiple battery packs, and the reference state of charge of the power dynamic parallel operation will be determined as the voltage value of the multiple battery packs. The minimum value in the state of charge.
  • Step S42 Determine whether the difference between the voltage values of the plurality of battery packs 10a-10c and the reference voltage value is less than a first threshold and the state of charge of the plurality of battery packs 10a-10c and the reference state of charge Whether the difference between is less than the second threshold. If yes, go to step S43.
  • the battery management unit BMU1 of the battery pack 10a compares the collected total voltage of each battery pack with a reference voltage value, and also collects the state of charge of each battery pack with the reference state of charge compared to.
  • the battery management unit BMU1 of the battery pack 10a will determine whether the difference between the voltage values of the plurality of battery packs and the reference voltage value is less than a first threshold, and the state of charge of the plurality of battery packs Whether the difference from the reference state of charge is smaller than the second threshold.
  • Step S43 Control the battery pack to sequentially connect to the power bus.
  • the battery management unit BMU1 of the battery pack 10a will set the power of each battery pack and cut into the command, and then the battery management units BMU1, BMU2, and BMU3 will also Close the switch K, the multiple battery packs 10a-10c will be connected to the power bus in sequence, and the power of each battery pack will be switched into the power bus in parallel, and the power parallel completion flag will be set.
  • the battery management unit determines the plurality of batteries according to the comparison result of the voltage value and the state of charge of the battery pack with the reference voltage value and the reference state of charge
  • the charging and discharging management method of the group can also adopt the following method steps:
  • Step S51 It is determined that at least one battery pack has been connected to the power bus and the battery pack is in a charging state.
  • the battery management unit of the host will send the charge current limit value I charge and discharge to the energy storage inverter 20 through the external bus.
  • the current limit value I discharge Therefore, the energy storage inverter 20 will output the charge and discharge current according to the corresponding charge current limit value and discharge current limit value.
  • Step S52 Determine whether the difference between the voltage value of the battery pack that is not connected to the power bus and the reference voltage value is within the first interval, and whether the difference between the state of charge and the reference state of charge is within the second interval. If yes, go to step S53.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
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Abstract

本申请提供一种并联电池组充放电管理方法,包括以下步骤:获取多个电池组的电压值及荷电状态;将所述电池组的电压值及荷电状态分别与参考电压值及参考荷电状态进行比较;根据比较结果对所述多个电池组进行充放电管理。本申请还提供一种电子装置及电气系统。由此,本申请所提供的技术方案可以提升电池组并机的自动化程度,增强并机系统的适应性,可以提高并机的执行效率,进一步降低运营维护成本,提升用户的体验度。

Description

并联电池组充放电管理方法、电子装置及电气系统 技术领域
本申请涉及电源技术领域,尤其涉及一种并联电池组充放电管理方法、电子装置及电气系统。
背景技术
为应对用户对储能电池的功率及续航时间的需求增长,若仍采用单电池组方案,势必增加电池组电芯的能量密度及电芯容量,从而增加电池组的体积及重量,并增加电池组的研发、制造、运输及安装成本。而采用电池组并联方案,从研发角度来讲,只需要设计一套低容量方案,减少了开发商研发及安规认证成本。电池组并联的关键在于主机电池组需实时监控各从机电池组的状态信息,在电池组出现故障时,主机电池组及时反馈故障信息给储能逆变器(PCS),PCS可立即进行降功率或者切断负载运行以确保并联后电池组的安全运行。
现有储能系统的并联技术存在如下问题:1、电池组必须在静置情况下,电压保持一致的情况下进行并联,在进行充放电使用,电池组电压必须人工进行调整,增加了安装调试的复杂度和成本;2、电池组在充放电情况下进行并机,只能以电压为并机的唯一依据,增加了电池组并联时功率回路因环流过大导致烧毁的风险。
现有技术中解决上述问题的解决方案有:1:并联的各电池组在并联之前,人工进行电池组的总电压调整,将各个电池组的总压充电或放电至一个固定的电压值,当所有的电池组总电压都调整完毕,再将各个电池组并联在一起使用;2、并联的各电池组在充放电过程中进行并联,但并机参考量仅为电池组电压,并且并联过程中的充放电电流取决于后级负载,当充放电过程中,先并入功率回路的电池组电压升高或者降低,与未并入的电池组电压一致时,则将未并入的电池组并联接入功率回路。
然而,现有技术中的解决方案存在以下缺点:1、方案1中,电池组电压需人工调整,电池组并联不够智能,增加了安装调试的复杂度和成本;2、方案2中,电池组并联时的参量量单一,充放电电流不受限制,导致并联的电池组之间的电压一致但实际容量差异大,并联之后电池组间环流过大,电池组电芯、功率回路及器件亦因环流大电流导致损坏损伤。
发明内容
有鉴于此,有必要提供一种并联电池组充放电管理方法、电子装置及电气系统,可以提升电池组并机的自动化程度,增强并机系统的适应性,可以提高并机的执行效率,进一步降低运营维护成本,提升用户的体验度。
本申请一实施方式提供一种并联电池组充放电管理方法,所述并联电池组充放电管理方法包括:获取多个电池组的电压值及荷电状态;将所述电池组的电压值及荷电状态分别与参考电压值及参考荷电状态进行比较;及根据比较结果对所述多个电池组进行充放电管理。
根据本申请的一些实施方式,所述参考电压值可通过以下方法获取:当所述多个电池组均未接入功率总线时,以所述多个电池组的电压值中的最小值为所述参考电压值。
根据本申请的一些实施方式,所述参考荷电状态可通过以下方法获取:当所述多个电池组均未接入功率总线时,以所述多个电池组的荷电状态中的最小值为所述参考荷电状态。
根据本申请的一些实施方式,所述参考电压值还可通过以下方法获取:当所述电池组已接入功率总线时,以已接入功率总线的所述电池组的电压值中的最小值为所述参考电压值。
根据本申请的一些实施方式,所述参考荷电状态还可通过以下方法获取:当所述电池组已接入功率总线时,以已接入功率总线的所述电池组的荷电状态中的最小值为所述参考荷电状态。
根据本申请的一些实施方式,所述并联电池组充放电管理方法还包括:获取已接入功率总线的所述电池组的数量;及确定储能逆变器的充电限流值I charge及放电限流值I discharge
根据本申请的一些实施方式,所述充电限流值I charge满足以下公式:
I charge=a×k 1×P m
其中,a为电池组的1C电流,k 1为充电限流系数,P m为已接入功率总线的所述电池组的数量。
根据本申请的一些实施方式,所述放电限流值I discharge满足以下公式:
I discharge=a×k 2×P m
其中,a为电池组的1C电流,k 2为放电限流系数,P m为已接入功率总线的所述电池组的数量。
根据本申请的一些实施方式,所述根据比较结果对所述多个电池组进行充放电管理的步骤还包括:当所述多个电池组均未接入功率总线时,判断所述多个电池组的电压值与参考电压值的差值是否均小于第一阈值且所述多个电池组的荷电状态与所述参考荷电状态的差值是否均小于第二阈值;及若所述多个电池组的电压值与参考电压值的差值均小于第一阈值且所述多个电池组的荷电状态与所述参考荷电状态的差值均小于第二阈值,控制所述多个电池组依次接入功率总线。
根据本申请的一些实施方式,所述根据比较结果对所述多个电池组进行充放电管理的步骤还包括:当至少一个电池组已接入功率总线且电池组处于充电状态时,判断未接入功率总线的电池组的电压值与参考电压值之间的差值是否在第一区间内且未接入功率总线的电池组的荷电状态与所述参考荷电状态之间的差值是否在第二区间内;若未接入功率总线的电池组的电压值与参考电压值 之间的差值均在第一区间内且未接入功率总线的电池组的荷电状态与所述参考荷电状态之间的差值均在第二区间内,控制电池组依次接入功率总线。
根据本申请的一些实施方式,所述根据比较结果对所述多个电池组进行充放电管理的步骤还包括:当至少一个电池组均接入功率总线且未接入功率总线的电池组处于放电状态时,判断所述参考电压值与未接入功率总线的电池组的电压值之间的差值是否在第三区间内且所述参考荷电状态与未接入功率总线的电池组的荷电状态之间的差值是否在第四区间内;若所述参考电压值与未接入功率总线的电池组的电压值之间的差值均在第三区间内且所述参考荷电状态与未接入功率总线的电池组的荷电状态之间的差值均在第四区间内,控制电池组依次接入功率总线。
根据本申请的一些实施方式,所述并联电池组充放电管理方法还包括:当电池组出现故障告警时,接收到所述故障告警信息;控制所有电池组切出功率总线或将故障的电池组单独切出功率总线。
本申请一实施方式还提供一种电子装置,所述电子装置包括:
多个电池组;
电池管理单元,用于执行如上述所述的充放电管理方法。
根据本申请的一些实施方式,所述电子装置还包括与所述多个电池组一一对应的多个开关,每一所述开关连接于电池组与储能逆变器之间。
本申请一实施方式还提供一种电气系统,所述电气系统包括储能逆变器及上述所述的电子装置,所述电子装置还包括与所述多个电池组一一对应的多个开关,每一所述开关连接于电池组与所述储能逆变器之间。
本申请实施方式提供的并联电池组充放电管理方法、电子装置及电气系统,通过获取多个电池组的电压值及荷电状态,并将所述电池组的电压值及荷电状态分别与参考电压值及参考荷电状态进行比较,再根据比较结果对所述多个电池组进行充放电管理。如此,本申请所提供的技术方案可以提升电池组并机的自动化程度,增强并机系统的适应性,可以提高并机的执行效率,进一步降低运营维护成本,提升用户的体验度。
附图说明
图1是根据本申请一实施方式的并联电池组的并机系统架构示意图。
图2是根据本申请一实施方式的并联电池组充放电管理方法的流程图。
图3是根据本申请另一实施方式的并联电池组充放电管理方法的流程图。
图4是根据本申请另一实施方式的并联电池组充放电管理方法的流程图。
图5是根据本申请另一实施方式的并联电池组充放电管理方法的流程图。
图6是根据本申请另一实施方式的并联电池组充放电管理方法的流程图。
图7是根据本申请一实施方式的并联电池组充放电管理系统的模块图。
主要元件符号说明
电子装置        100
并联电池组                  10
电池组                      10a、10b、10c
储能逆变器                  20
并联电池组充放电管理系统    30
开关                        K
电池管理单元                BMU1、BMU2、BMU3
获取模块                    301
比较模块                    302
控制模块                    303
如下具体实施方式将结合上述附图进一步详细说明本申请。
具体实施方式
下面将结合本申请实施方式中的附图,对本申请实施方式中的技术方案进行清楚、完整地描述,显然,所描述的实施方式是本申请一部分实施方式,而不是全部的实施方式。
请参阅图1,图1为根据本申请一实施方式的并联电池组10进行并机的系统架构示意图。
本申请实施方式提供一种电气系统,所述电气系统包括电子装置100和储能逆变器20。本申请实施方式中的电子装置100电连接于储能逆变器20,所述电子装置100可以包括并联电池组10。
具体而言,所述并联电池组10可包括多个并联连接的电池组(图1仅以三个电池组10a、10b、10c为例进行说明,可以多于三个或者少于三个)。
每一电池组10a、10b、10c均包括正极B+及负极B-,每一电池组10a-10c的正极B+连接在一起构成并联电池组10的正极,每一电池组10a-10c的负极B-连接在一起构成并联电池组10的负极。并联电池组10的输出汇流至储能逆变器20的直流输入侧。具体地,每一电池组10a、10b、10c的负极B-电连接于所述储能逆变器20的功率总线P-,每一电池组10a、10b、10c的正极B+分别通过开关K电连接于所述储能逆变器20的功率总线P+。本申请的实施方式中,所述开关的数量与电池组的数量相同且一一对应。即,各电池组功率线可通过对应的开关K并联在功率总线P+、P-上。
本申请一实施方式中,每一电池组10a、10b、10c还包括有内部总线接口及外部总线接口,内部总线接口可以实现内部总线通信功能,外部总线接口可以实现外部总线通信功能。可以理解的是,内部总线通信功能可用于实现每一电池组10a-10c之间的内部通信,外部总线通信功能可用于实现主机与储能逆变 器20之间的通信。
在一较佳实施方式中,所述内部总线及外部总线可以为CAN通信总线或者RS485通信总线。
本申请的一实施方式中,所述并联电池组10中的其中一个电池组可为主机,其余电池组可为从机。
可以理解的是,每一电池组中均可设有电池管理单元,其中每个电池组由对应的电池管理单元来进行电芯管理。也即,本申请实施方式中,多个开关K可分别由对应的电池管理单元来控制开关状态。具体地,本申请的实施方式中,所述电池组10a为主机,所述电池组10b、10c为从机。所述电池组10a中设有电池管理单元BMU1,所述电池组10b、10c中分别设有电池管理单元BMU2、BMU3。
接着,从机中的电池管理单元将对应电池组的数据信息及状态通过内部总线发送给主机中的电池管理单元。由此,主机中的电池管理单元可将各个电池管理单元(包括主机的电池管理单元)的数据信息及状态进行汇总及分析,并计算出对应的控制参数,再通过内部总线分别对各个电池管理单元进行控制,同时还将可通过外部总线与储能逆变器20进行数据交互与运行调度。
请参阅图2,图2为根据本申请一实施方式的并联电池组充放电管理方法的步骤流程图。所述并联电池组充放电管理方法可以包括以下步骤。
步骤S21:获取多个电池组的电压值及荷电状态。
本申请实施方式中,各从机的电池管理单元将对应电池组的数据信息及状态通过内部总线发送给主机的电池管理单元。举例而言,所述电池组10a中的电池管理单元BMU1可以通过电池管理单元BMU2、BMU3来获取电池组10b、10c的电压值以及荷电状态。
可以理解的是,荷电状态(State of Charge,SOC)是指电池的剩余容量与该电池的满充容量的比值。
步骤S22:将所述电池组的电压值及荷电状态分别与参考电压值及参考荷电状态进行比较。
具体而言,在进行功率动态并机时,需要将各电池组的总电压值与参考电压值进行比较,并且还需要将各电池组的荷电状态与参考荷电状态进行比较。
其中,功率动态并机的参考电压值与参考荷电状态均由主机的电池管理单元来计算。
在较佳的一个实施方式中,所述参考电压值可通过以下方法来获取:若所述多个电池组10a-10c均未接入功率总线,所述多个电池组10a-10c的电压值中的最小值即可为作为所述参考电压值。
在较佳的一个实施方式中,所述参考荷电状态可通过以下方法来获取:若所述多个电池组10a-10c均未接入功率总线,所述多个电池组10a-10c的荷电状态中的最小值可作为所述参考荷电状态。
在另一个较佳的实施方式中,所述参考电压值也可通过以下方法来获取:若所述多个电池组10a-10c中已存在功率切入功率总线,即以已接入功率总线的 所述电池组的电压值中的最小值来作为所述参考电压值。
在另一个较佳的实施方式中,所述参考荷电状态也可通过以下方法来获取:若所述多个电池组10a-10c中已存在功率切入功率总线,即以已接入功率总线的所述电池组的荷电状态中的最小值来作为所述参考荷电状态。
步骤S23:根据比较结果对所述多个电池组进行充放电管理。
本申请实施方式中,当所述参考电压值及所述参考荷电状态被确定后,所述主机的电池管理单元将所述电池组的电压值及荷电状态分别与参考电压值及参考荷电状态进行比较,即可根据比较结果对所述多个电池组进行充放电管理。
功率动态并机需要储能逆变器的配合执行,即在电池组动态并机进行过程中,储能逆变器需要按照主机的电池管理单元计算得出的限流值进行充电或放电。
在一较佳实施方式中,请参阅图3,主机的电池管理单元计算充电限流值及放电限流值,具体可以通过以下步骤进行:
步骤S31:获取已接入功率总线的所述电池组的数量。
本申请实施方式中,所述主机的电池管理单元获取已切入功率总线的所述电池组的数量。
步骤S32:确定储能逆变器的充电限流值及放电限流值。
本申请实施方式中,储能逆变器的充电限流值记为I charge,所述放电限流值记为I discharge
具体而言,所述充电限流值I charge满足以下公式:
I charge=a×k 1×P m  (1)
其中,a为电池组的1C电流,k 1为充电限流系数,P m为已切入功率总线的所述电池组的数量。
进一步地,所述放电限流值I discharge满足以下公式:
I discharge=a×k 2×P m  (2)
其中,a为电池组的1C电流,k 2为放电限流系数,P m为已接入功率总线的所述电池组的数量。
本申请实施方式中,当功率总线上没有电池组的功率切入时,即P m=0,由上述公式可以得出,储能逆变器的充电限流值I charge与放电限流值I discharge亦等于0。
在一较佳实施方式中,请参阅图4,所述电池管理单元根据所述电池组的电压值及荷电状态与参考电压值及参考荷电状态的比较结果,确定所述多个电池组的充放电管理方式具体可以通过以下方法步骤:
步骤S41:确定所述多个电池组均未接入功率总线。
本申请实施方式中,所述主机的电池管理单元可根据各从机的电池管理单元反馈的电池组的数据信息及状态,可以确定所述多个电池组是否均未接入功率总线。
具体地,若确定各电池组均未功率切入功率总线,即本申请实施方式中的所述电池组10a、10b、10c均没有切入功率总线时,所述电池组10a的电池管 理单元BMU 1将通过外部总线向储能逆变器发送充电限流值I charge及放电限流值I discharge均为0。此时,功率动态并机的参考电压值将被确定为所述多个电池组的电压值中的最小值,并且功率动态并机的参考荷电状态将被确定为所述多个电池组的荷电状态中的最小值。
步骤S42:判断所述多个电池组10a-10c的电压值与参考电压值的差值是否均小于第一阈值且所述多个电池组10a-10c的荷电状态与所述参考荷电状态的差值是否均小于第二阈值。若是,则进入步骤S43。
本申请实施方式中,所述电池组10a的电池管理单元BMU1将收集的每一电池组的总电压与参考电压值作比较,还将收集的每一电池组的荷电状态与参考荷电状态作比较。
接着,所述电池组10a的的电池管理单元BMU1将会判断所述多个电池组的电压值与参考电压值的差值是否均小于第一阈值,并且所述多个电池组的荷电状态与所述参考荷电状态的差值是否均小于第二阈值。
步骤S43:控制电池组依次接入功率总线。
本申请实施方式中,若所述多个电池组10a-10c的电压值与参考电压值的差值均小于第一阈值,并且所述多个电池组10a-10c的荷电状态与所述参考荷电状态的差值亦均小于第二阈值,此时所述电池组10a的电池管理单元BMU1将置位各电池组的功率并机切入命令,接着各电池管理单元BMU1、BMU2、BMU3亦将闭合开关K,所述多个电池组10a-10c将依次接入功率总线,则各电池组功率并机切入功率总线完成,功率并机完成标志置位。
在另一较佳实施方式中,请参阅图5,所述电池管理单元根据所述电池组的电压值及荷电状态与参考电压值及参考荷电状态的比较结果,确定所述多个电池组的充放电管理方式具体还可以通过以下方法步骤:
步骤S51:确定至少一个电池组已接入功率总线且电池组处于充电状态。
本申请实施方式中,若确定至少一个电池组已接入功率总线且电池组处于充电状态,主机的电池管理单元将会通过外部总线向储能逆变器20发送充电限流值I charge及放电限流值I discharge。由此,储能逆变器20将会按照相应的充电限流值及放电限流值进行充放电电流的输出。
步骤S52:判断未接入功率总线的电池组的电压值与参考电压值的差值是否在第一区间内且荷电状态与所述参考荷电状态的差值是否在第二区间内。若是,则进入步骤S53。
举例而言,本申请实施方式中,当所述电池组10a已接入功率总线,但电池组10b、10c没有接入功率总线。此时,所述电池管理单元BMU1将会判断所述电池组10b、10c的电压值与参考电压值的差值是否在第一区间内。此外,所述电池管理单元BMU1还将会判断所述电池组10b、10c的荷电状态与所述参考荷电状态的差值是否在第二区间内。
步骤S53:控制电池组依次接入功率总线。
本申请实施方式中,若未接入功率总线的电池组的电压值与参考电压值的差值在第一区间内,并且荷电状态与所述参考荷电状态的差值也在第二区间内。 此时,所述主机的电池管理单元BMU1将置位各电池组的功率并机切入命令,接着电池管理单元将闭合开关K,未接入功率总线的电池组将依次接入功率总线,则各电池组功率并机切入功率总线完成,功率并机完成标志置位。
在另一较佳实施方式中,请参阅图6,所述电池管理单元根据所述电池组的电压值及荷电状态与参考电压值及参考荷电状态的比较结果,确定所述多个电池组的充放电管理方式具体还可以通过以下方法步骤:
步骤S61:确定至少一个电池组已接入功率总线且电池组处于放电状态。
本申请实施方式中,若确定至少一个电池组已接入功率总线且电池组处于放电状态,主机的电池管理单元将会通过外部总线向储能逆变器20发送充电限流值I charge及放电限流值I discharge。由此,储能逆变器20将会按照相应的充电限流值及放电限流值进行充放电电流的输出。
步骤S62:判断所述参考电压值与未接入功率总线的电池组的电压值的差值是否在第三区间内,且所述参考荷电状态与未接入功率总线的电池组的荷电状态的差值是否在第四区间内。若是,则进入步骤S63。
举例而言,本申请实施方式中,当所述电池组10a已接入功率总线,但电池组10b、10c没有接入功率总线。此时,所述电池管理单元BMU1将会判断参考电压值与电池组10b、10c的电压值的差值是否在第三区间内。此外,所述电池管理单元BMU1还将会判断所述参考荷电状态与电池组10b、10c的荷电状态的差值是否在第四区间内。
步骤S63:控制电池组依次接入功率总线。
本申请实施方式中,若所述参考电压值与未接入功率总线的电池组的电压值之间的差值在第三区间内,并且所述参考荷电状态与未接入功率总线的电池组的荷电状态之间的差值也在第四区间内。此时,所述主机的电池管理单元BMU1将置位各电池组的功率并机切入命令,接着电池管理单元将闭合开关K,未接入功率总线的电池组将依次接入功率总线,则各电池组功率并机切入功率总线完成,功率并机完成标志置位。
可以理解,随着储能逆变器20的充电或放电的持续进行,所述主机的电池管理单元将会实时计算并更新参考电压值与参考荷电状态。未功率并机的电池组在充电或放电过程中电压值与荷电状态逐一满足功率并机将会逐一进行功率并机切入,电池组功率并机完成标志逐一置位。随着并机电池组数量的逐一增加,充电限流值I charge及放电限流值I discharge亦将实时地计算并更新,直至所有的电池组均完成功率并机切入,所有电池组功率并机完成标志都置位,主机置位功率并机完成总标志,退出参考电压值与参考荷电状态的计算,充电限流值I charge及放电限流值I discharge的计算方法由功率并机模式限流方法变更为储能系统正常运行模式的充放电限流值方法,即储能系统所有电池组将退出功率并机模式。储能逆变器接收到主机电池管理单元发出的功率并机完成总标志与正常运行模式充放电限流值,储能逆变器与储能系统同步进入正常运行模式。
本申请实施方式中,当各电池组的电池管理单元(如电池组10b中的BMU2)出现故障告警时,主机的电池管理单元(如电池组10a中的BMU1)接收到各 电池组的故障告警信息后,将会控制所有电池组全部切出功率总线,或者将故障的电池组单独切出功率总线,被功率切出的电池组将会清除功率并机完成标志置位,主机中的电池管理单元BMU1清除功率并机完成总标志,储能系统退出正常运行模式,重新进入功率并机判断模式。
图7为根据本申请一实施方式中的并联电池组充放电管理系统30的示意图。在本实施方式中,所述并联电池组充放电管理系统30可以被分割成一个或多个模块,所述一个或多个模块存储在所述电池管理单元BMU1中,并由所述电池管理单元BMU1执行,所述电池管理单元BMU1执行所述计算机程序时实现上述并联电池组充放电管理方法实施例中的步骤,以完成本申请。所述一个或多个模块可以是能够完成特定功能的一系列计算机程序指令段,所述指令段用于描述所述并联电池组充放电管理系统30在所述电子装置100中的执行过程。例如,所述并联电池组充放电管理系统30可以被分割成图7中的获取模块301、比较模块302、控制模块303。
所述获取模块301用于获取多个电池组的电压值及荷电状态。
所述比较模块302用于将所述电池组的电压值及荷电状态分别与参考电压值及参考荷电状态进行比较。
所述控制模块303用于根据比较结果对所述多个电池组进行充放电管理。
通过所述并联电池组充放电管理系统30可以对电池组10a-10c进行充放电管理,可以提升电池组并机的自动化程度,增强并机系统的适应性,可以提高并机的执行效率,进一步降低运营维护成本,提升用户的体验度。具体内容可以参见上述并联电池组充放电管理方法的实施例,在此不再详述。
可以理解的是,以上所描述的模块划分,为一种逻辑功能划分,实际实现时可以有另外的划分方式。另外,在本申请各个实施例中的各功能模块可以集成在相同处理单元中,也可以是各个模块单独物理存在,也可以两个或两个以上模块集成在相同单元中。上述集成的模块既可以采用硬件的形式实现,也可以采用硬件加软件功能模块的形式实现。
本技术领域的普通技术人员应当认识到,以上的实施方式仅是用来说明本申请,而并非用作为对本申请的限定,只要在本申请的实质精神范围之内,对以上实施方式所作的适当改变和变化都落在本申请要求保护的范围之内。

Claims (14)

  1. 一种并联电池组充放电管理方法,其特征在于,所述并联电池组充放电管理方法包括:
    获取多个电池组的电压值及荷电状态;
    将所述电池组的电压值及荷电状态分别与参考电压值及参考荷电状态进行比较;及
    根据比较结果对所述多个电池组进行充放电管理。
  2. 根据权利要求1所述的并联电池组充放电管理方法,其特征在于,所述参考电压值可通过以下方法获取:
    当所述多个电池组均未接入功率总线时,以所述多个电池组的电压值中的最小值为所述参考电压值。
  3. 根据权利要求1所述的并联电池组充放电管理方法,其特征在于,所述参考荷电状态可通过以下方法获取:
    当所述多个电池组均未接入功率总线时,以所述多个电池组的荷电状态中的最小值为所述参考荷电状态。
  4. 根据权利要求1所述的并联电池组充放电管理方法,其特征在于,所述参考电压值还可通过以下方法获取:
    当所述电池组已接入功率总线时,以已接入功率总线的所述电池组的电压值中的最小值为所述参考电压值。
  5. 根据权利要求1所述的并联电池组充放电管理方法,其特征在于,所述参考荷电状态还可通过以下方法获取:
    当所述电池组已接入功率总线时,以已接入功率总线的所述电池组的荷电状态中的最小值为所述参考荷电状态。
  6. 根据权利要求1所述的并联电池组充放电管理方法,其特征在于,所述并联电池组充放电管理方法还包括:
    获取已接入功率总线的所述电池组的数量;及
    确定储能逆变器的充电限流值I charge及放电限流值I discharge
  7. 根据权利要求6所述的并联电池组充放电管理方法,其特征在于,所述充电限流值I charge满足以下公式:
    I charge=a×k 1×P m
    其中,a为电池组的1C电流,k 1为充电限流系数,P m为已接入功率总线的所述电池组的数量。
  8. 根据权利要求6所述的并联电池组充放电管理方法,其特征在于,所述放电限流值I discharge满足以下公式:
    I discharge=a×k 2×P m
    其中,a为电池组的1C电流,k 2为放电限流系数,P m为已接入功率总线的所述电池组的数量。
  9. 根据权利要求1所述的并联电池组充放电管理方法,其特征在于,所述根据比较结果对所述多个电池组进行充放电管理的步骤还包括:
    当所述多个电池组均未接入功率总线时,判断所述多个电池组的电压值与参考电压值的差值是否均小于第一阈值且所述多个电池组的荷电状态与所述参考荷电状态的差值是否均小于第二阈值;及
    若所述多个电池组的电压值与参考电压值的差值均小于第一阈值且所述多个电池组的荷电状态与所述参考荷电状态的差值均小于第二阈值,控制电池组依次接入功率总线。
  10. 根据权利要求9所述的并联电池组充放电管理方法,其特征在于,所述根据比较结果对所述多个电池组进行充放电管理的步骤还包括:
    当至少一个电池组已接入功率总线且电池组处于充电状态时,判断未接入功率总线的电池组的电压值与参考电压值之间的差值是否在第一区间内且未接入功率总线的电池组的荷电状态与所述参考荷电状态之间的差值是否在第二区间内;
    若未接入功率总线的电池组的电压值与参考电压值之间的差值均在第一区间内且未接入功率总线的电池组的荷电状态与所述参考荷电状态之间的差值均在第二区间内,控制电池组依次接入功率总线。
  11. 根据权利要求10所述的并联电池组充放电管理方法,其特征在于,所述根据比较结果对所述多个电池组进行充放电管理的步骤还包括:
    当至少一个电池组均接入功率总线且未接入功率总线的电池组处于放电状态时,判断所述参考电压值与未接入功率总线的电池组的电压值之间的差值是否在第三区间内且所述参考荷电状态与未接入功率总线的电池组的荷电状态之间的差值是否在第四区间内;
    若所述参考电压值与未接入功率总线的电池组的电压值之间的差值均在第三区间内且所述参考荷电状态与未接入功率总线的电池组的荷电状态之间的差值均在第四区间内,控制电池组依次接入功率总线。
  12. 根据权利要求11所述的并联电池组充放电管理方法,其特征在于,所述并联电池组充放电管理方法还包括:
    当电池组出现故障告警时,接收到所述故障告警信息;及
    控制所有电池组切出功率总线或将故障的电池组单独切出功率总线。
  13. 一种电子装置,其特征在于,所述电子装置包括:
    多个电池组;
    电池管理单元,用于执行如权利要求1-12中任意一项所述的充放电管理方法。
  14. 一种电气系统,其特征在于,所述电气系统包括储能逆变器及如权利要求13所述的电子装置,所述电子装置还包括与所述多个电池组一一对应的多个开关,每一所述开关连接于电池组与所述储能逆变器之间。
PCT/CN2021/076382 2020-03-27 2021-02-09 并联电池组充放电管理方法、电子装置及电气系统 WO2021190196A1 (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114030384A (zh) * 2021-11-19 2022-02-11 广州小鹏汽车科技有限公司 电池组的充电控制方法、电池管理系统、装置及车辆
CN114336888A (zh) * 2022-01-11 2022-04-12 阳光电源股份有限公司 储能单元并机控制方法、电池管理系统和电池储能系统
CN115639395A (zh) * 2022-11-18 2023-01-24 湖南恩智测控技术有限公司 电子负载并机电流回显算法、并机系统和电子设备
CN117293964A (zh) * 2023-09-27 2023-12-26 广州奥鹏能源科技有限公司 一种电池并机的数据处理方法、装置及终端设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102659479B1 (ko) 2020-03-27 2024-04-23 동관 파워앰프 테크놀로지 리미티드 병렬 배터리 팩 충방전 관리 방법, 전자 장치 및 전기 시스템
CN111431228B (zh) * 2020-03-27 2023-06-20 东莞新能安科技有限公司 并联电池组充放电管理方法及电子装置
CN114079300A (zh) * 2020-08-12 2022-02-22 比亚迪股份有限公司 多组储能电池控制方法、装置、系统及其存储介质
CN112798968A (zh) * 2020-12-24 2021-05-14 重庆峘能电动车科技有限公司 电池并联方法、估算电池并联系统soc的方法及相关设备
JP2024519641A (ja) * 2022-04-28 2024-05-21 寧徳時代新能源科技股▲分▼有限公司 電池システムの充電制御方法と充電制御装置
CN116660768B (zh) * 2023-08-01 2024-01-05 宁德时代新能源科技股份有限公司 环流测试方法以及电池测试系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010271286A (ja) * 2009-05-25 2010-12-02 Mitsubishi Heavy Ind Ltd 電池劣化判定装置、電池劣化判定方法、及びプログラム
CN202260493U (zh) * 2011-07-07 2012-05-30 天津市松正电动汽车技术股份有限公司 一种兼容多种电池的电池管理系统
CN103081281A (zh) * 2010-10-15 2013-05-01 三洋电机株式会社 电力管理系统
CN105098920A (zh) * 2015-08-25 2015-11-25 哈尔滨工业大学(威海) 开关电源及其控制方法
CN105814768A (zh) * 2013-10-16 2016-07-27 丰田自动车株式会社 蓄电系统
CN108206560A (zh) * 2016-12-20 2018-06-26 宁德时代新能源科技股份有限公司 电池均衡方法
CN111431228A (zh) * 2020-03-27 2020-07-17 东莞新能安科技有限公司 并联电池组充放电管理方法及电子装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553081A (en) * 1982-06-07 1985-11-12 Norand Corporation Portable battery powered system
US8368346B2 (en) * 2007-03-26 2013-02-05 The Gillette Company Portable energy storage and charging device
JP5748689B2 (ja) * 2012-02-28 2015-07-15 三菱重工業株式会社 電池システム
CN103414224B (zh) * 2013-08-14 2016-02-10 惠州市亿能电子有限公司 一种大容量高电压的集成电池组系统及其控制方法
EP3048663B1 (en) * 2013-09-20 2019-12-18 Hitachi Chemical Co., Ltd. Power storage system and method of maintaining power storage system
KR20150081731A (ko) * 2014-01-06 2015-07-15 삼성에스디아이 주식회사 배터리 팩, 배터리 팩을 포함하는 에너지 저장 시스템, 배터리 팩의 작동 방법
WO2015105923A1 (en) * 2014-01-07 2015-07-16 Utah State University Battery control
EP3518374B1 (en) * 2016-09-21 2021-08-18 Envision AESC Japan Ltd. Power supply system
CN107599859B (zh) * 2017-09-01 2018-07-06 苏州达思灵新能源科技有限公司 电动汽车的供电系统、控制方法和电动汽车
CN110838737B (zh) * 2018-08-15 2021-07-23 中国长城科技集团股份有限公司 退役动力电池组的充放电控制方法及充放电控制装置
US10793019B2 (en) * 2018-08-16 2020-10-06 Ford Global Technologies, Llc Electrified vehicle DC power conversion with balancing of battery states
CN110281811B (zh) * 2019-04-29 2023-04-07 山东沂星电动汽车有限公司 一种电动汽车的电池的限流保护方法及系统
CN110266066B (zh) * 2019-05-05 2021-10-22 江苏苏美达机电有限公司 多锂电池组并联的充电控制装置及充电控制方法
CN110783989A (zh) * 2019-11-08 2020-02-11 海宁昱能电子有限公司 一种电池组并联工作的控制方法及相关装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010271286A (ja) * 2009-05-25 2010-12-02 Mitsubishi Heavy Ind Ltd 電池劣化判定装置、電池劣化判定方法、及びプログラム
CN103081281A (zh) * 2010-10-15 2013-05-01 三洋电机株式会社 电力管理系统
CN202260493U (zh) * 2011-07-07 2012-05-30 天津市松正电动汽车技术股份有限公司 一种兼容多种电池的电池管理系统
CN105814768A (zh) * 2013-10-16 2016-07-27 丰田自动车株式会社 蓄电系统
CN105098920A (zh) * 2015-08-25 2015-11-25 哈尔滨工业大学(威海) 开关电源及其控制方法
CN108206560A (zh) * 2016-12-20 2018-06-26 宁德时代新能源科技股份有限公司 电池均衡方法
CN111431228A (zh) * 2020-03-27 2020-07-17 东莞新能安科技有限公司 并联电池组充放电管理方法及电子装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4131706A4 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114030384A (zh) * 2021-11-19 2022-02-11 广州小鹏汽车科技有限公司 电池组的充电控制方法、电池管理系统、装置及车辆
CN114030384B (zh) * 2021-11-19 2024-01-09 广州小鹏汽车科技有限公司 电池组的充电控制方法、电池管理系统、装置及车辆
CN114336888A (zh) * 2022-01-11 2022-04-12 阳光电源股份有限公司 储能单元并机控制方法、电池管理系统和电池储能系统
CN114336888B (zh) * 2022-01-11 2024-04-12 阳光电源股份有限公司 储能单元并机控制方法、电池管理系统和电池储能系统
CN115639395A (zh) * 2022-11-18 2023-01-24 湖南恩智测控技术有限公司 电子负载并机电流回显算法、并机系统和电子设备
CN117293964A (zh) * 2023-09-27 2023-12-26 广州奥鹏能源科技有限公司 一种电池并机的数据处理方法、装置及终端设备

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