WO2020118561A1 - 一种电池堆的充放电方法、装置、介质及系统 - Google Patents

一种电池堆的充放电方法、装置、介质及系统 Download PDF

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Publication number
WO2020118561A1
WO2020118561A1 PCT/CN2018/120607 CN2018120607W WO2020118561A1 WO 2020118561 A1 WO2020118561 A1 WO 2020118561A1 CN 2018120607 W CN2018120607 W CN 2018120607W WO 2020118561 A1 WO2020118561 A1 WO 2020118561A1
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WIPO (PCT)
Prior art keywords
target battery
battery stack
cluster
charging
target
Prior art date
Application number
PCT/CN2018/120607
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English (en)
French (fr)
Inventor
刘凌
黄河
王全
彭再武
刘进程
周浩
张彪
龙宇舟
牛满岗
张晓龙
王宏伟
Original Assignee
湖南中车时代电动汽车股份有限公司
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Priority to PCT/CN2018/120607 priority Critical patent/WO2020118561A1/zh
Publication of WO2020118561A1 publication Critical patent/WO2020118561A1/zh

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    • 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
    • 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
    • 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 invention relates to the technical field of energy storage power stations, in particular to a charging and discharging method, device, medium and system of a battery stack.
  • the object of the present invention is to provide a method, device, medium and system for charging and discharging a battery stack to ensure safety and reliability during the charging and discharging of the battery stack.
  • the specific plan is as follows:
  • a charging and discharging method for a battery stack including:
  • the target battery stack When the target battery stack reaches the hot standby state, the first operating parameter of the target battery cluster during the charging of the target battery stack is detected in real time; wherein, the target battery cluster is any battery cluster in the target battery stack;
  • the target battery cluster is discharged until the target battery stack is completely discharged.
  • the method further includes:
  • it also includes:
  • the third operating parameter of the target battery cluster during the power-on process is detected in real time
  • it also includes:
  • the fourth operating parameter of the target battery cluster during the power-off process is detected in real time
  • the method further includes:
  • the method before charging the target battery stack, before charging the battery cluster with the lowest current voltage in the target battery stack, the method further includes:
  • the process of determining whether the contactor of the battery cluster with the lowest voltage in the target battery stack is in a closed state when charging the target battery stack for the first time includes:
  • the invention also discloses a charging and discharging device for a battery stack, including:
  • the first detection module is used to detect in real time the first operating parameter of the target battery cluster during charging of the target battery stack when the target battery stack reaches the hot standby state; wherein, the target battery cluster is the target battery Any battery cluster in the stack;
  • the parameter judgment module is used to judge whether the first operating parameter meets the first preset condition
  • the battery cluster charging module is used to charge the target battery cluster if it is, until the target battery stack is fully charged;
  • a second detection module configured to detect in real time the second operating parameter of the target battery cluster during the discharging process, and determine whether the second operating parameter meets the second preset condition
  • the battery cluster discharge module is used to discharge the target battery cluster until the target battery stack is completely discharged.
  • the present invention also discloses a computer-readable storage medium which stores a computer program on the computer-readable storage medium.
  • the computer program is executed by a processor, the method for charging and discharging the battery stack as disclosed above is realized. step.
  • the invention also discloses a charging and discharging system for a battery stack, including: an energy storage converter, a target battery stack is connected to the input end of the energy storage converter, and the energy storage converter
  • a control unit is provided on the connecting branch of the device and the target battery stack; the control unit is used to perform the following steps:
  • the target battery stack When the target battery stack reaches the hot standby state, the first operating parameter of the target battery cluster during the charging of the target battery stack is detected in real time; wherein, the target battery cluster is any battery cluster in the target battery stack;
  • the target battery cluster is discharged until the target battery stack is completely discharged.
  • the target battery stack when the target battery stack reaches the hot standby state, it first detects the first operating parameter of the target battery cluster in real time during the charging process of the target battery stack, and then determines whether the first operating parameter of the target battery cluster meets The first preset condition. If the first operating parameter meets the first preset condition, the target battery cluster may be charged until the target battery stack is fully charged. After that, the second operating parameter of the target battery cluster during the discharging process is detected in real time, and it is determined whether the second operating parameter meets the second preset condition, and if the second operating parameter meets the second preset condition, the target battery cluster is discharged, Until the target battery stack is discharged.
  • a charging and discharging device, medium and system of a battery stack disclosed by the present invention also have the above-mentioned beneficial effects.
  • FIG. 1 is a flowchart of a method for charging and discharging a battery stack according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method of charging and discharging a battery stack according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for charging and discharging a battery stack according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a charging and discharging circuit of a battery stack according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for precharging a battery stack according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a method for charging a battery stack according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a method for powering down a battery stack according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a charging and discharging device for a battery stack according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a charging and discharging system of a battery stack according to an embodiment of the present invention.
  • An embodiment of the present invention discloses a method for charging and discharging a battery stack. As shown in FIG. 1, the method includes:
  • Step S11 When the target battery stack reaches the hot standby state, the first operating parameter of the target battery cluster during the charging process of the target battery stack is detected in real time;
  • the target battery cluster is any battery cluster in the target battery stack
  • Step S12 determine whether the first operating parameter meets the first preset condition
  • Step S13 If yes, charge the target battery cluster until the target battery stack is fully charged
  • Step S14 Real-time detection of the second operating parameter of the target battery cluster during the discharging process, and judging whether the second operating parameter meets the second preset condition;
  • Step S15 If yes, discharge the target battery cluster until the target battery stack is discharged.
  • the target battery stack refers to a battery stack composed of battery clusters.
  • the battery stack here can be different types of batteries, such as lead-acid batteries, alkaline batteries, lithium batteries, etc., or the battery stack can be replaced with a diesel engine.
  • the target battery stack when the target battery stack reaches the hot standby state, the current value and voltage value of the target battery stack will increase during the process of charging the target battery stack, if the current value and voltage value of the target battery stack increase When it reaches a certain level, if the target battery stack continues to be charged, it will cause serious polarization in the target battery stack, which will not only cause irreversible damage to the internal material of the target battery stack, but also The target battery stack is in danger of expansion and explosion.
  • the first preset condition is set to avoid the occurrence of such phenomena.
  • the first when charging the target battery stack, the first is to collect the first operating parameters of the target battery cluster during the charging process.
  • the first operating parameters include the current value, the voltage value of the target battery cluster during the charging process, Related operating parameters such as temperature and resistance.
  • this method can avoid the overcharge phenomenon of the target battery stack during the charging process, and can also ensure the safety of the target battery stack during the charging process.
  • a second preset condition for avoiding the over discharge phenomenon of the target battery stack is set.
  • the target battery cluster After acquiring the second operating parameter of the target battery stack during discharging, it is first determined whether the second operating parameter satisfies the second preset condition. If the second operating parameter satisfies the second preset condition, the target The battery cluster is discharged; if the second operating parameter of the target battery cluster does not meet the second preset condition, the discharge of the target battery cluster is stopped to avoid the over discharge phenomenon of the target battery cluster. Obviously, by the method in this embodiment , Can further ensure the safety performance of the target battery stack during charging or discharging.
  • the method in this embodiment it is also possible to ensure that the output of each battery cluster in the target battery stack during charging and discharging is uniform, and thus to ensure the safety and stability of the target battery cluster during charging and discharging. It should be noted that in actual applications, the specific operating conditions of each battery stack are different. Therefore, the first preset condition and the second preset condition can be specifically adjusted and modified according to the actual situation, and will not be performed here. Specific details.
  • the method in this embodiment can avoid the problem that the charging current of the target battery cluster is too large or the discharging current is too large during the charging or discharging of the target battery stack, thereby avoiding the electronic element in the target battery stack
  • the damage caused by the device further guarantees the safety and reliability of the discharge process of the target battery cluster.
  • the target battery stack when the target battery stack reaches the hot standby state, it first detects the first operating parameter of the target battery cluster in real time during the charging process of the target battery stack, and then determines whether the first operating parameter of the target battery cluster The first preset condition is satisfied, and if the first operating parameter meets the first preset condition, the target battery cluster may be charged until the target battery stack is fully charged.
  • the second operating parameter of the target battery cluster during the discharging process is detected in real time, and it is determined whether the second operating parameter meets the second preset condition, and if the second operating parameter meets the second preset condition, the target battery cluster is discharged, Until the target battery stack is discharged.
  • the abuse problem of the target battery stack during use is solved, thereby ensuring the safety of the target battery stack during charging and discharging Sex and reliability.
  • step S12 after the process of determining whether the first operating parameter meets the first preset condition, further includes:
  • the target battery stack when the target battery stack reaches the hot standby state, during the process of charging the target battery stack, the current value and voltage value of the target battery cell in the target battery stack will increase, and the target battery unit will be made The body's temperature rises. If the current value and voltage value of the target battery cell rise to a certain level, or when the temperature of the target battery cell reaches a certain threshold, continue to charge the target battery stack, which will cause irreversible changes in the performance of the target battery cell , Or even cause the target stack to fail.
  • the first operating parameter of the target battery cluster if it does not satisfy the first preset condition, it indicates that the operating performance of the target battery cluster has reached the limit of the safe operation of the target battery cluster. Charging will cause potential safety hazards or failures in the target battery stack, which will affect the safe operation of the target battery stack. Therefore, in this embodiment, if the first operating parameter of the target battery cluster does not satisfy the first preset condition, the charging process of the target battery cluster is limited to avoid the failure of the target battery stack.
  • the process of limiting the charging process of the target battery cluster here includes suspending the charging of the target battery cluster, terminating the charging of the target battery cluster, and limiting the current value of the target battery cluster during the charging process.
  • the current value of the target battery cluster during charging and discharging can be adjusted by controlling the target battery cluster to reduce power output.
  • the method in this embodiment can reduce the probability of a safety accident in the charging process of the target battery cluster.
  • the charging of the target battery stack is stopped, that is, the transmission process of the target battery stack and the external energy is cut off to prevent the target battery stack from being subjected to greater economy loss.
  • the discharge process of the target battery stack can also be limited to ensure the target battery cluster during the discharge process
  • For safety performance please refer to the content disclosed above, and no more details will be given here.
  • the charging and discharging method of the above battery stack further includes:
  • the third operating parameter of the target battery cluster during the power-on process is detected in real time
  • the specific operating parameters of the target battery cluster in the target battery stack during power-up are also set, that is, the third is set according to the specific requirements of the target battery stack during power-up.
  • the preset condition, and the third preset condition here can also be specifically adjusted according to actual conditions.
  • the target battery cluster may be powered on; if the third operating parameter does not satisfy the third preset condition, the target Power on the battery cluster.
  • the method in this embodiment can not only ensure the safety performance of the target battery stack during power-on, but also avoid damage to the electronic components in the target battery stack.
  • the charging and discharging method of the above battery stack further includes:
  • the fourth operating parameter of the target battery cluster during the power-off process is detected in real time
  • the fourth preset condition is set for the restriction condition of the specific operation parameter, that is, the fourth preset condition here can be specifically adjusted according to actual conditions.
  • the target battery cluster is powered off; if the fourth operating parameter does not satisfy the fourth preset condition, the target battery stack When a fault occurs, you can prompt warning information so that the staff can know the current operating state of the target battery stack in time, and can remind the staff to turn off the load in the target battery stack in time to reduce the probability of a safety accident.
  • the duration of the target battery stack not satisfying the fourth preset condition may also be set to a time Threshold, to further improve the stability and accuracy of the judgment results.
  • the method in this embodiment can ensure the safety of the target battery stack during the power-off process.
  • this embodiment further describes and optimizes the technical solution.
  • the above steps: before the process when the target battery stack reaches the hot standby state further includes:
  • Step S01 When charging the target battery stack, charge the battery cluster with the lowest current voltage in the target battery stack;
  • Step S02 determine whether the voltage difference between the battery cluster with the lowest current voltage and the battery cluster with the second lowest current voltage in the target battery stack meets the preset threshold
  • Step S03 if yes, charge the battery cluster with the second lowest current voltage in the target battery stack;
  • Step S04 Repeat the step of charging the battery cluster with the lowest current voltage in the target battery stack until the target battery stack reaches the hot standby state.
  • a method for charging different battery clusters in the target battery stack step by step is provided to avoid that the pressure difference between the different battery clusters is too large during the charging of the target battery stack, and the target Damage caused by various electronic components in the battery stack.
  • this embodiment further describes and optimizes the technical solution.
  • the above step S01 when charging the target battery stack, the battery cluster with the lowest current voltage in the target battery stack Before the charging process, it also includes:
  • Step H01 When charging the target battery stack for the first time, determine whether the contactor of the battery cluster with the lowest voltage in the target battery stack is closed;
  • Step H02 if yes, charge the pre-charge path of the target battery stack, and determine whether the pre-charge path meets the third preset condition;
  • Step H03 If yes, charge the target battery stack.
  • a method for pre-charging and powering up the target battery stack is provided.
  • the first step is to determine whether the contactor of the lowest voltage battery cluster in the target battery stack is closed, and if the contactor of the lowest voltage battery cluster in the target battery stack is closed, It means that the charging line in the target battery stack is in a conducting state, and then, the pre-charging path of the target battery stack is charged again to avoid damage to the electronic components caused by the target battery stack when the power supply is turned on.
  • the third preset condition may be set such that the voltage difference between the contactor that has been closed in the precharge circuit and the contactor that will be closed is less than or equal to the preset threshold, that is, if the contactor that has been closed in the precharge circuit If the voltage difference between the contactor to be closed is less than or equal to the preset threshold, it means that the pre-charging circuit has been fully charged.
  • step H01 when charging the target battery stack for the first time, determine whether the contactor of the battery cluster with the lowest voltage in the target battery stack is closed
  • the state process includes:
  • the target battery stack in order to ensure the safety of the target battery stack power-up process, when the target battery stack is charged for the first time, it can further determine whether the target battery cluster can complete the power-on self-test, if the target battery cluster can complete the power-on self-test , It means that each functional component in the target battery stack is in a normal operating state. At this time, you can continue to perform subsequent process steps on the target battery stack to complete the charging process of the target battery stack. If the target battery cluster cannot complete the power-on self-test, the target battery stack is in a fault state. At this time, the staff can repair and process the target battery stack to ensure the safe operation of the target battery stack.
  • this embodiment is explained by a specific battery stack charging and discharging circuit.
  • one end of the energy storage converter is connected to a transformer, and the other end is connected with N battery clusters in parallel, that is, a battery stack.
  • a circuit breaker and a fuse are provided on the connection branch of the energy storage converter and the battery stack
  • the detector, control unit, fuse, circuit breaker and energy storage converter constitute a power storage conversion system (Power Conversion System, PCS).
  • PCS Power Conversion System
  • a battery module and a high-voltage power distribution box are provided in each battery cluster of the battery stack, and a contactor and a battery management system main board are provided in the high-voltage power distribution box.
  • the contactor in the high-voltage power distribution box is used to control the turning on or off of the battery module connected to the high-voltage power distribution box
  • the main board of the battery management system is used to obtain the operating parameters reported by various components in the battery module, and according to The operating parameters estimate the operating state of the battery module, and control the charging and discharging process of the battery stack and the fault handling through communication with the control unit, that is, the battery management system main board can be equivalent to a battery management System (Battery Management System, BMS).
  • BMS Battery Management System
  • the charging and discharging process of the battery cluster can be divided into: pre-charging and first battery cluster power-up phase, battery stack power-up phase, discharge circulation current control phase, and battery stack power-down phase.
  • the PCS when it is necessary to power on the first battery cluster in the battery stack, the PCS first supplies power to the BMS to wake up the BMS in the battery stack and send a pull-in battery to the BMS Contactor command for the lowest voltage battery cluster in the stack.
  • the BMS completes the wake-up operation, the BMS performs a power-on self-test to determine whether there is a fault in the BMS. If the BMS finds a fault during the self-test, the fault information is reported to the PCS.
  • the BMS completes the power-on self-test, it is judged Whether the contactor command sent by the PCS to the BMS to pull in the battery cluster with the lowest voltage value in the battery stack is received, if received, the contactor of the battery cluster with the lowest voltage value in the battery stack is sucked in and the voltage value is the lowest
  • the pull-in status of the contactor of the battery cluster is sent to the PCS. After that, the PCS determines whether the contactor of the battery cluster with the lowest voltage value is in the pull-in state.
  • the PCS continues to send the contactor command of the battery cluster with the lowest pull-in voltage to the BMS; if it is, the contactor in the control unit is closed, In order to enable the external power supply to be connected to the battery stack, and determine whether the voltage difference between the closed contactor and the contactor to be closed in the precharge circuit of the battery stack meets the preset value, if it is, it means the precharge of the battery stack The road precharge is successful.
  • the PCS can close the contactor connected to the branch to precharge the battery stack. In this process, in order to ensure the safe operation of the battery stack, the contactor can be closed for a preset time. Then disconnect the contactor in the control unit to complete the pre-charging and power-up process of the battery stack.
  • the PCS first sends the closed state of the contactor to the BMS.
  • the BMS receives the closed state of the contactor sent by the PCS
  • the operating parameters of each battery cluster in the battery stack are sent to the PCS.
  • the PCS receives the operating parameters of each battery cluster in the battery stack sent by the BMS, it analyzes the operating parameters of all battery clusters and sends the lowest voltage to the battery stack. Of the battery clusters send the command of the pull-in contactor to charge the battery cluster with the lowest voltage.
  • the contactor of the battery cluster with the lowest voltage When the battery cluster with the lowest voltage receives the command of the pull-in contactor, the contactor of the battery cluster with the lowest voltage is controlled to pull in, and Send the pull-in status of the contactor of the battery cluster with the lowest voltage to the PCS.
  • the PCS receives the feedback command of the battery cluster with the lowest voltage, it is determined whether the voltage difference between the battery cluster with the lowest voltage and the battery cluster with the next lowest voltage meets the preset threshold; if not, the PCS starts to enter the charging state; if it is , Then send the close command of the contactor to the battery cluster with the second lowest voltage in the battery stack to charge the battery cluster with the next lowest voltage; when the contactor of the battery cluster with the next lowest voltage is closed, the The closed state of the contactor is sent to the PCS, and then the PCS repeatedly charges the battery cluster with the lowest current voltage in the battery stack until all battery clusters in the battery stack reach the hot standby state, completing the power-up process of the battery stack.
  • the target battery cluster is any battery cluster in the battery stack.
  • the PCS and BMS perform a self-test to determine whether they are in a normal operating state, and if both the PCS and BMS are in a normal operating state ,
  • the PCS sends a power-off command for the battery stack to the BMS. If the BMS receives the power-off instruction sent by the PCS, it determines whether the current value of the target battery cluster is less than the preset current value, and if so, turns off the load of the battery stack and powers off the battery stack.
  • the BMS does not receive the power-off command sent by the PCS, it is determined whether the BMS is in a fault state. If it is, the BMS reports the fault information to the PCS and requests power-off. When the BMS receives the power-off command returned by the PCS, the battery is turned off. Load the stack and power off. When the PCS receives the power-off instruction from the BMS, it turns off the load in the battery cluster and disconnects the contactor on the connecting branch to power off the battery stack. Obviously, the method in this embodiment ensures the safe power off of the battery stack.
  • the invention also discloses a charging and discharging device for a battery stack, as shown in FIG. 8, including:
  • the first detection module 21 is used to detect in real time the first operating parameter of the target battery cluster during the charging of the target battery stack when the target battery stack reaches the hot standby state; wherein, the target battery cluster is any battery in the target battery stack cluster;
  • the parameter judgment module 22 is used to judge whether the first operating parameter meets the first preset condition
  • the battery cluster charging module 23 is used to charge the target battery cluster if it is, until the target battery stack is fully charged;
  • the second detection module 24 is used to detect the second operating parameters of the target battery cluster in the discharging process in real time, and determine whether the second operating parameters meet the second preset condition;
  • the battery cluster discharging module 25 is used to discharge the target battery cluster until the target battery stack is discharged.
  • the present invention also discloses a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program.
  • the steps of the charging and discharging method of the battery stack disclosed above are realized.
  • an embodiment of the present invention also discloses a charging and discharging system of a battery stack, including: an energy storage converter, a target battery stack is connected to an input end of the energy storage converter, and the energy storage converter and A control unit is provided on the connection branch of the target battery stack; the control unit is used to perform the following steps:
  • the target battery stack When the target battery stack reaches the hot standby state, the first operating parameter of the target battery cluster during the charging process of the target battery stack is detected in real time; wherein, the target battery cluster is any battery cluster in the target battery stack;
  • a charging and discharging system for a battery stack is disclosed.
  • the charging and discharging system includes an energy storage converter, and a target battery stack is connected to an input end of the energy storage converter.
  • a control unit is provided on the connection branch between the energy storage converter and the target battery stack.
  • the control unit When the target battery stack reaches the hot standby state, the control unit will detect the first operating parameter of the target battery cluster during the charging process of the target battery stack in real time, and determine whether the first operating parameter meets the first preset condition.
  • the target battery cluster is charged until the target battery stack is fully charged; if the target battery stack needs to be discharged, the control unit will detect the second operating parameter of the target battery cluster in the discharge process in real time and determine whether the second operating parameter of the target battery cluster is satisfied
  • the second preset condition if so, discharges the target battery cluster until the target battery stack is discharged.
  • the control unit solves the problem of using the target battery stack by restricting the operating parameters during the charging and discharging of the target battery cluster in the target battery stack
  • the abuse problem can ensure the safety and reliability of the target battery stack during charging and discharging.

Abstract

一种电池堆的充放电方法、装置、介质及系统,该方法包括:当目标电池堆达到热备用状态时,实时检测目标电池堆在充电的过程中目标电池簇的第一运行参数(S11);判断第一运行参数是否满足第一预设条件(S12);若是,则对目标电池簇充电,直至目标电池堆充电完毕(S13);实时检测目标电池簇在放电过程中的第二运行参数,并判断第二运行参数是否满足第二预设条件(S14);若是,则对目标电池簇放电,直至目标电池堆放电完毕(S15)。上述方法解决了目标电池堆的滥用问题,由此可以保证目标电池堆在充放电过程中的安全性及可靠性。

Description

一种电池堆的充放电方法、装置、介质及系统 技术领域
本发明涉及储能电站技术领域,特别涉及一种电池堆的充放电方法、装置、介质及系统。
背景技术
随着科学技术的发展,储能电站的应用越来越广泛,而储能电站的建设需要大量的电池簇,电池簇的增加提高了储能电站的系统控制难度,所以,如何更为安全、有效地对电池簇的充放电过程进行管理成为当前的一个研究热点。目前,针对这一技术问题,还没有较为有效的解决方法,由此可见,如何提供一种电池堆的充放电方法来提高电池堆在充放电过程中的安全性及可靠性,是本领域技术人员亟待解决的问题。
发明内容
有鉴于此,本发明的目的在于提供一种电池堆的充放电方法、装置、介质及系统,以保证在对电池堆充放电过程中的安全性及可靠性。其具体方案如下:
一种电池堆的充放电方法,包括:
当目标电池堆达到热备用状态时,实时检测所述目标电池堆在充电的过程中目标电池簇的第一运行参数;其中,所述目标电池簇为所述目标电池堆中任意一个电池簇;
判断所述第一运行参数是否满足第一预设条件;
若是,则对所述目标电池簇充电,直至所述目标电池堆充电完毕;
实时检测所述目标电池簇在放电过程中的第二运行参数,并判断所述第二运行参数是否满足第二预设条件;
若是,则对所述目标电池簇放电,直至所述目标电池堆放电完毕。
优选的,所述判断所述第一运行参数是否满足第一预设条件的过程之后,还包括:
若否,则对所述目标电池堆的充电过程进行限制。
优选的,还包括:
对所述目标电池堆进行上电时,实时检测所述目标电池簇在上电过程中的第三运行参数;
判断所述第三运行参数是否满足第三预设条件;
若是,则对所述目标电池簇上电。
优选的,还包括:
对所述目标电池堆进行下电时,实时检测所述目标电池簇在下电过程中的第四运行参数;
判断所述第四运行参数是否满足第四预设条件;
若是,则对所述目标电池簇下电。
优选的,所述当目标电池堆达到热备用状态的过程之前,还包括:
当对所述目标电池堆充电时,对所述目标电池堆中当前电压最低的电池簇进行充电;
判断所述目标电池堆中当前电压最低的电池簇与当前电压次低的电池簇的电压差值是否满足预设阈值;
若是,则对所述目标电池堆中当前电压次低的电池簇进行充电;
重复执行所述对所述目标电池堆中当前电压最低的电池簇进行充电的步骤,直至所述目标电池堆达到热备用状态。
优选的,所述当对所述目标电池堆充电时,对所述目标电池堆中当前电压最低的电池簇进行充电的过程之前,还包括:
当首次对目标电池堆充电时,判断所述目标电池堆中电压最低的电池簇的接触器是否处于闭合状态;
若是,则对所述目标电池堆的预充电路进行充电,并判断所述预充电路是否满足第三预设条件;
若是,则对所述目标电池堆充电。
优选的,所述当首次对目标电池堆充电时,判断所述目标电池堆中电压最低的电池簇的接触器是否处于闭合状态的过程,包括:
当首次对所述目标电池堆充电时,判断所述目标电池簇是否能够完成开机自检;
若是,则判断所述目标电池堆中电压最低的电池簇的接触器是否处于闭合状态。
相应的,本发明还公开了一种电池堆的充放电装置,包括:
第一检测模块,用于当目标电池堆达到热备用状态时,实时检测所述目标电池堆在充电的过程中目标电池簇的第一运行参数;其中,所述目标电池簇为所述目标电池堆中任意一个电池簇;
参数判断模块,用于判断所述第一运行参数是否满足第一预设条件;
电池簇充电模块,用于若是,则对所述目标电池簇充电,直至所述目标电池堆充电完毕;
第二检测模块,用于实时检测所述目标电池簇在放电过程中的第二运行参数,并判断所述第二运行参数是否满足第二预设条件;
电池簇放电模块,用于若是,则对所述目标电池簇放电,直至所述目标电池堆放电完毕。
相应的,本发明还公开了一种计算机可读存储介质,所述计算机可读存储介质上存储有计算机程序,所述计算机程序被处理器执行时实现如前述公开的电池堆的充放电方法的步骤。
相应的,本发明还公开了一种电池堆的充放电系统,包括:储能变流器,所述储能变流器的输入端上连接有目标电池堆,并且,所述储能变流器与所述目标电池堆的连接支路上设置有控制单元;所述控制单元用于执行以下步骤:
当目标电池堆达到热备用状态时,实时检测所述目标电池堆在充电的过程中目标电池簇的第一运行参数;其中,所述目标电池簇为所述目标电池堆中任意一个电池簇;
判断所述第一运行参数是否满足第一预设条件;
若是,则对所述目标电池簇充电,直至所述目标电池堆充电完毕;
实时检测所述目标电池簇在放电过程中的第二运行参数,并判断所述第二运行参数是否满足第二预设条件;
若是,则对所述目标电池簇放电,直至所述目标电池堆放电完毕。
可见,在本发明中,当目标电池堆达到热备用状态时,首先是实时检测目标电池堆在充电过程中目标电池簇的第一运行参数,然后,判断目标电池簇的第一运行参数是否满足第一预设条件,如果第一运行参数满足第一预设条件,则可以对目标电池簇进行充电,直至目标电池堆充电完毕。之后,实时检测目标电池簇在放电过程中的第二运行参数,并判断第二运行参数是否满足第二预设条件,如果第二运行参数满足第二预设条件,则对目标电池簇放电,直至目标电池堆放电完毕。显然,在本发明中,通过对目标电池簇在充放电过程中运行参数进行限制,解决了目标电池堆在使用过程中的滥用问题,由此可以保证目标电池堆在充放电过程中的安全性及可靠性。相应的,本发明公开的一种电池堆的充放电装置、介质及系统,同样具有上述有益效果。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,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,还可以根据提供的附图获得其他的附图。
图1为本发明实施例提供的一种电池堆的充放电方法的流程图;
图2为本发明实施例提供的另一种电池堆的充放电方法的流程图;
图3为本发明实施例提供的又一种电池堆的充放电方法的流程图;
图4为本发明实施例提供的一种电池堆的充放电电路的结构示意图;
图5为本发明实施例提供的一种对电池堆预充电方法的流程图;
图6为本发明实施例提供的一种对电池堆充电方法的流程图;
图7为本发明实施例提供的一种对电池堆下电方法的流程图;
图8为本发明实施例提供的一种电池堆的充放电装置的结构图;
图9为本发明实施例提供的一种电池堆的充放电系统的结构示意图。
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。
本发明实施例公开了一种电池堆的充放电方法,如图1所示,该方法包括:
步骤S11:当目标电池堆达到热备用状态时,实时检测目标电池堆在充电的过程中目标电池簇的第一运行参数;
其中,目标电池簇为目标电池堆中任意一个电池簇;
步骤S12:判断第一运行参数是否满足第一预设条件;
步骤S13:若是,则对目标电池簇充电,直至目标电池堆充电完毕;
步骤S14:实时检测目标电池簇在放电过程中的第二运行参数,并判断第二运行参数是否满足第二预设条件;
步骤S15:若是,则对目标电池簇放电,直至目标电池堆放电完毕。
需要说明的是,在本申请中目标电池堆是指由电池簇所组成的电池堆。此处的电池堆可以是不同类型的电池,比如:铅酸电池、碱性电池、锂电池等等,或者还可以将电池堆用柴油机来代替。
可以理解的是,当目标电池堆达到热备用状态时,在对目标电池堆充电的过程中,会使得目标电池堆的电流值和电压值增大,如果目标电池堆的电流值和电压值升高到一定程度时,如果继续对目标电池堆进行充电,则会导致目标电池堆的内部发生严重的极化现象,这样不仅会使得目标电池堆的内部材料发生不可逆的损伤,而且,也会使得目标电池堆存在膨胀爆炸的危险。
而且,在对目标电池堆进行充电的过程中,目标电池堆中各个电池簇内的电池单体内阻并不相等,由此会导致目标电池堆的出力不均,所以,在本实施例中,为了保证目标电池簇在充电过程中的安全性,以及为了避 免目标电池簇在充电过程中出现的过充现象,是设置第一预设条件来避免此类现象的出现。
具体的,在对目标电池堆进行充电时,首先是采集目标电池簇在充电过程中的第一运行参数,此处,第一运行参数包括目标电池簇在充电过程中的电流值、电压值、温度值以及电阻值等相关运行参数。
当获取到目标电池簇在充电过程中的第一运行参数之后,首先是判断第一运行参数是否满足第一预设条件,若是,则对目标电池簇充电,直至将目标电池堆中的所有电池簇充电完毕。显然,通过此种方法可以避免目标电池堆在充电过程中的过充现象,并且,也可以保证目标电池堆在充电过程中的安全性。
能够想到的是,在对目标电池堆进行放电的过程中,随着目标电池堆中电能的释放,目标电池堆的电流值以及电压值会逐渐下降,当目标电池堆的电流值或者是电压值降低到一定值时,如果继续对目标电池堆进行放电,则会导致目标电池堆中电极活性物质损失,使得目标电池堆的寿命缩短。所以,在本实施例中,是设置了一个避免目标电池堆出现过放现象的第二预设条件。
具体的,当获取到了目标电池堆在放电过程中的第二运行参数之后,首先是判断第二运行参数是否满足第二预设条件,如果第二运行参数满足第二预设条件,则对目标电池簇进行放电;如果目标电池簇的第二运行参数不满足第二预设条件,则停止对目标电池簇放电,以避免目标电池簇出现的过放现象,显然,通过本实施例中的方法,可以进一步保证目标电池堆在充电或者是放电过程中的安全性能。
并且,通过本实施例中方法,也可以保证目标电池堆中各个电池簇在充放电过程中的出力均匀,并由此保证目标电池簇在充放电过程中的安全性及稳定性。需要说明的是,在实际应用当中,由于各个电池堆的具体运行情况各不相同,所以,第一预设条件和第二预设条件可以根据实际情况进行具体调整与修改,此处不再进行具体赘述。
显然,通过本实施例中的方法,可以避免在对目标电池堆充电或放电过程中,目标电池簇充电电流过大或者是放电电流过大的问题,由此避免 了对目标电池堆中电子元器件所造成的损坏,进而保证了目标电池簇放电过程的安全性及可靠性。
可见,在本实施例中,当目标电池堆达到热备用状态时,首先是实时检测目标电池堆在充电过程中目标电池簇的第一运行参数,然后,判断目标电池簇的第一运行参数是否满足第一预设条件,如果第一运行参数满足第一预设条件,则可以对目标电池簇进行充电,直至目标电池堆充电完毕。之后,实时检测目标电池簇在放电过程中的第二运行参数,并判断第二运行参数是否满足第二预设条件,如果第二运行参数满足第二预设条件,则对目标电池簇放电,直至目标电池堆放电完毕。显然,在本实施例中,通过对目标电池簇在充放电过程中运行参数进行限制,解决了目标电池堆在使用过程中的滥用问题,由此可以保证目标电池堆在充放电过程中的安全性及可靠性。
基于上述实施例,本实施例对技术方案作进一步的说明与优化,具体的,上述步骤S12:判断第一运行参数是否满足第一预设条件的过程之后,还包括:
若否,则对目标电池堆的充电过程进行限制。
可以理解的是,当目标电池堆达到热备用状态时,在对目标电池堆充电的过程中,会使得目标电池堆中目标电池单体的电流值和电压值增大,并会使得目标电池单体的温度升高。如果目标电池单体的电流值和电压值升高到一定程度时,或者是目标电池单体的温度达到一定阈值时,继续对目标电池堆进行充电,会导致目标电池单体性能发生不可逆的改变,甚至会使得目标电池堆发生故障。
在本实施例中,如果目标电池簇的第一运行参数不满足第一预设条件,说明目标电池簇的运行性能已经达到目标电池簇安全运行的极限范围,此时,若继续对目标电池簇进行充电,会导致目标电池堆存在安全隐患或者是发生故障,进而影响目标电池堆的安全运行。所以,在本实施例中,如果目标电池簇的第一运行参数不满足第一预设条件,则对目标电池簇的充电过程进行限制,以避免目标电池堆出现故障。
需要说明的是,此处对目标电池簇的充电过程进行限制的过程,包括中止对目标电池簇进行充电、终止对目标电池簇进行充电以及限制目标电池簇在充电过程中的电流值大小。具体的,在实际应用当中,可以通过控制目标电池簇进行降功率输出,来调整目标电池簇在充放电过程中的电流值大小。显然,通过本实施例中的方法,可以降低目标电池簇在充电过程中发生安全事故的概率。
此外,如果判断出目标电池堆在充电过程中出现故障状态,则停止对目标电池堆进行充电,也即,将目标电池堆和外界能量的传输过程切断,以防止目标电池堆遭受更大的经济损失。
相应的,如果目标电池簇在放电过程中的第二运行参数不满足第二预设条件,也可以通过对目标电池堆的放电过程进行限制,并以此来保证目标电池簇在放电过程中的安全性能,此处可参见上述公开的内容,此处不再进行具体赘述。
基于上述实施例,本实施例对技术方案作进一步的说明与优化,具体的,上述电池堆的充放电方法,还包括:
对目标电池堆进行上电时,实时检测目标电池簇在上电过程中的第三运行参数;
判断第三运行参数是否满足第三预设条件;
若是,则对目标电池簇上电。
可以理解的是,如果在对目标电池堆进行上电时,电流值或者是电压值过大,会对目标电池堆中的电子元器件造成损坏,在本实施例中,为了进一步保证目标电池堆在上电过程中的安全性,还对目标电池堆中目标电池簇在上电过程中的具体运行参数进行了设置,也即,根据目标电池堆在上电过程中的具体要求设置了第三预设条件,并且,此处的第三预设条件还可以根据实际情况进行具体调整。
具体的,如果目标电池簇在上电过程中的第三运行参数满足第三预设条件,则可以对目标电池簇进行上电;如果第三运行参数不满足第三预设条件,则不对目标电池簇进行上电。显然,通过本实施例中的方法,不仅 可以保证目标电池堆在上电过程中的安全性能,同时也可以避免对目标电池堆中电子元器件的损坏。
基于上述实施例,本实施例对技术方案作进一步的说明与优化,具体的,上述电池堆的充放电方法,还包括:
对目标电池堆进行下电时,实时检测目标电池簇在下电过程中的第四运行参数;
判断第四运行参数是否满足第四预设条件;
若是,则对目标电池簇下电。
能够想到的是,目标电池堆在下电过程中,如果电压值或者是电流值过大,也会对目标电池堆中的电子元器件造成损坏,所以,在本实施例中,还根据目标电池堆在下电过程中具体运行参数的限制条件设置了第四预设条件,也即,此处的第四预设条件可以根据实际情况进行具体调整。
具体的,如果目标电池堆在下电过程中的第四运行参数满足第四预设条件,则对目标电池簇进行下电;如果第四运行参数不满足第四预设条件,则说明目标电池堆发生了故障,此时,可以提示预警信息,以使得工作人员可以及时知晓目标电池堆的当前运行状态,并且,可以提醒工作人员及时关闭目标电池堆中的负载,以降低安全事故发生的概率。
此外,在实际应用中,为了避免目标电池堆瞬间电流值或者是电压值过大而对判断结果所造成的误判,还可以将目标电池堆不满足第四预设条件的持续时间设置一个时间阈值,以此来进一步提高判断结果的稳定性与准确性。显然,通过本实施例中的方法,可以保证目标电池堆在下电过程中的安全性。
基于上述实施例,本实施例对技术方案作进一步的说明与优化,如图2所示,具体的,上述步骤:当目标电池堆达到热备用状态时的过程之前,还包括:
步骤S01:当对目标电池堆充电时,对目标电池堆中当前电压最低的电池簇进行充电;
步骤S02:判断目标电池堆中当前电压最低的电池簇与当前电压次低的电池簇的电压差值是否满足预设阈值;
步骤S03:若是,则对目标电池堆中当前电压次低的电池簇进行充电;
步骤S04:重复执行对目标电池堆中当前电压最低的电池簇进行充电的步骤,直至目标电池堆达到热备用状态。
可以理解的是,在目标电池堆达到热备用状态之前,在对目标电池堆充电的过程中,目标电池堆中不同电池簇压差不同可能会造成冲击电流过大,从而影响目标电池堆的安全运行性能。所以,在本实施例中,是提供了一种对目标电池堆中不同电池簇逐级进行充电的方法,以避免在对目标电池堆进行充电过程中不同电池簇压差过大,而对目标电池堆中各个电子元器件所造成的损伤问题。
基于上述实施例,本实施例对技术方案作进一步的说明与优化,如图3所示,具体的,上述步骤S01:当对目标电池堆充电时,对目标电池堆中当前电压最低的电池簇进行充电的过程之前,还包括:
步骤H01:当首次对目标电池堆充电时,判断目标电池堆中电压最低的电池簇的接触器是否处于闭合状态;
步骤H02:若是,则对目标电池堆的预充电路进行充电,并判断预充电路是否满足第三预设条件;
步骤H03:若是,则对目标电池堆充电。
在本实施例中,为了避免大电流首次对目标电池堆进行充电时,对目标电池堆中电子元器件所造成的损伤,是提供了一种对目标电池堆进行预充上电的方法。
也即,如果是首次对目标电池堆进行充电时,首先是判断目标电池堆中电压最低的电池簇的接触器是否处于闭合状态,如果目标电池堆中电压最低电池簇的接触器处于闭合状态,则说明目标电池堆中的充电线路处于导通状态,之后,再对目标电池堆的预充电路进行充电,以避免目标电池堆在接通电源瞬间对电子元器件所造成的损伤。
然后,当目标电池堆的预充电路达到第三预设条件时,说明目标电池 堆的预充电路已经充电完毕,此时,就可以对目标电池堆进行充电。具体的,可以将第三预设条件设置为预充电路中已经闭合的接触器和即将闭合的接触器的电压差值小于等于预设阈值,也即,如果预充电路中已经闭合的接触器和即将闭合的接触器的电压差值小于等于预设阈值,则说明预充电路已经充电完毕。
基于上述实施例,本实施例对技术方案作进一步的说明与优化,具体的,上述步骤H01:当首次对目标电池堆充电时,判断目标电池堆中电压最低的电池簇的接触器是否处于闭合状态的过程,包括:
当首次对目标电池堆充电时,判断目标电池簇是否能够完成开机自检;
若是,则判断目标电池堆中电压最低的电池簇的接触器是否处于闭合状态。
在本实施例中,为了保证目标电池堆上电过程的安全性,当首次对目标电池堆充电时,还可以进一步判断目标电池簇是否能够完成开机自检,如果目标电池簇能够完成开机自检,则说明目标电池堆中的各个功能部件处于正常运行状态。此时,就可以继续对目标电池堆执行后续的流程步骤,以完成对目标电池堆的充电过程。如果目标电池簇不能够完成开机自检,则说明目标电池堆处于故障状态。此时,工作人员就可以对目标电池堆进行维修与处理,以保证目标电池堆的安全运行。
基于上述实施例中的内容,本实施例通过一个具体的电池堆充放电电路进行说明。如图4所示,储能变流器的一端连接变压器,另一端并联有N个电池簇,也即,电池堆,在储能变流器和电池堆的连接支路上设置有断路器、熔断器、接触器、用于对电池堆充放电过程进行调控的控制单元,以及用于对连接支路上电流值和电压值进行检测的检测器。在该电路当中,检测器、控制单元、熔断器、断路器以及储能变流器组成一个储能变流系统(Power Conversion System,PCS)。
在实际应用当中,会在电池堆的每一个电池簇中设置有电池模块和高压配电盒,在高压配电盒中设置有接触器和电池管理系统主板。能够想到 的是,高压配电盒中的接触器用于控制与高压配电盒相连的电池模块的导通或关闭,而电池管理系统主板用于获取电池模块内各个部件上报的运行参数,并根据运行参数对电池模块的运行状态进行估算,并通过与控制单元的通讯对电池堆的充放电过程进行调控以及对故障进行处理等操作,也即,可以将电池管理系统主板等效为一个电池管理系统(Battery Management System,BMS)。
在图4当中,为了储能变流器的正常运行,防止电池堆闭合过程中电池堆内不同电池簇电压差值过大造成的电流冲击和使用过程中不同电池簇状态不同所造成的簇间环流问题,可以将电池簇的充放电过程分为:预充及第一电池簇上电阶段、电池堆上电阶段、放电环流控制阶段以及电池堆的下电阶段。
结合图5当中的流程图,当需要对电池堆中的第一个电池簇进行上电时,首先是PCS对BMS供电,以对电池堆中的BMS进行唤醒操作,并向BMS发送吸合电池堆中电压最低的电池簇的接触器指令。当BMS完成了唤醒操作时,BMS进行开机自检,以判断BMS中是否存在故障,如果BMS在自检过程中发现故障,则将故障信息上报至PCS,如果BMS完成了开机自检,则判断是否接收到PCS向BMS发送的吸合电池堆中电压值最低的电池簇的接触器指令,如果接收到,则将电池堆中电压值最低的电池簇的接触器吸合,并将电压值最低的电池簇的接触器的吸合状态发送至PCS。之后,PCS判断电压值最低的电池簇的接触器是否处于吸合状态,若否,则PCS继续向BMS发送吸合电压最低电池簇的接触器指令;若是,则闭合控制单元中的接触器,以使得外部电源能够接入电池堆中,并判断电池堆的预充电路中已经闭合的接触器和即将闭合的接触器的电压差值是否满足预设数值,若是,则表示电池堆的预充电路预充成功,此时,PCS可以闭合连接支路上的接触器,以对电池堆进行预充电,在此过程中,为了保证电池堆的安全运行,可以将接触器闭合延时预设时间,再断开控制单元中的接触器,以此来完成电池堆的预充上电过程。
结合图6当中的流程图,当电池堆中的第N个电池簇上电完成之后,PCS首先将接触器的闭合状态发送至BMS,当BMS接收到PCS发送的接 触器的闭合状态时,则将电池堆中每一个电池簇的运行参数发送至PCS,当PCS接收到BMS发送的电池堆中各个电池簇的运行参数时,对所有电池簇的运行参数进行解析,并向电池堆中电压最低的电池簇发送吸合接触器的指令,以对电压最低的电池簇充电,当电压最低的电池簇接收到吸合接触器的指令时,则控制电压最低的电池簇的接触器吸合,并将电压最低的电池簇的接触器的吸合状态发送至PCS。当PCS接收到电压最低电池簇的反馈指令时,判断电池簇中电压最低的电池簇和电压次低的电池簇的电压差值是否满足预设阈值;若否,则PCS开始进入充电状态;若是,则向电池堆中电压次低的电池簇发送接触器的闭合指令,以对电压次低的电池簇充电;当电压次低的电池簇的接触器闭合之后,将电压次低的电池簇的接触器的闭合状态发送至PCS,然后,PCS重复对电池堆中当前电压最低的电池簇进行充电,直至电池堆中的所有电池簇达到热备用状态,完成电池堆的上电过程。
当对电池堆放电时,则判断电池堆中目标电池簇的当前电流值是否小于目标电池簇的限流值,若是,则对电池堆放电;若否,则PCS进行降功率输出,直至电池堆中目标电池簇的当前电流值小于目标电池簇的限流值。需要说明的是,目标电池簇为电池堆中任意一个电池簇。
结合图7当中的流程图,如果需要对电池堆下电,首先是确定电池堆上电完成之后,PCS和BMS进行自检,判断自身是否处于正常运行状态,如果PCS和BMS都处于正常运行状态,则PCS向BMS发送电池堆的下电指令。如果BMS接收到PCS发送的下电指令,则判断目标电池簇的当前电流值是否小于预设电流值,若是,则关闭电池堆的负载,并对电池堆下电。如果目标电池簇的当前电流值大于或等于预设电流值,并且,该状态的持续时间超过预设时间,则说明该电池簇发生了故障,此时记录故障信息,并关闭电池堆中的负载,以避免安全事故的发生。如果BMS没有接收到PCS发送的下电指令,则判断BMS是否处于故障状态,若是,则BMS向PCS上报故障信息,并请求下电,当BMS接收到PCS反馈的下电指令时,则关闭电池堆中的负载并下电。当PCS接收到BMS的请求下电指令时,则关闭电池簇中的负载,断开连接支路上的接触器,以使电池堆下电。显然,通过本 实施例中的方式,保证了电池堆的安全下电。
相应的,本发明还公开了一种电池堆的充放电装置,如图8所示,包括:
第一检测模块21,用于当目标电池堆达到热备用状态时,实时检测目标电池堆在充电的过程中目标电池簇的第一运行参数;其中,目标电池簇为目标电池堆中任意一个电池簇;
参数判断模块22,用于判断第一运行参数是否满足第一预设条件;
电池簇充电模块23,用于若是,则对目标电池簇充电,直至目标电池堆充电完毕;
第二检测模块24,用于实时检测目标电池簇在放电过程中的第二运行参数,并判断第二运行参数是否满足第二预设条件;
电池簇放电模块25,用于若是,则对目标电池簇放电,直至目标电池堆放电完毕。
相应的,本发明还公开了一种计算机可读存储介质,计算机可读存储介质上存储有计算机程序,计算机程序被处理器执行时实现如前述公开的电池堆的充放电方法的步骤。
相应的,本发明实施例还公开了一种电池堆的充放电系统,包括:储能变流器,储能变流器的输入端上连接有目标电池堆,并且,储能变流器与目标电池堆的连接支路上设置有控制单元;控制单元用于执行以下步骤:
当目标电池堆达到热备用状态时,实时检测目标电池堆在充电的过程中目标电池簇的第一运行参数;其中,目标电池簇为目标电池堆中任意一个电池簇;
判断第一运行参数是否满足第一预设条件;
若是,则对目标电池簇充电,直至目标电池堆充电完毕;
实时检测目标电池簇在放电过程中的第二运行参数,并判断第二运行参数是否满足第二预设条件;
若是,则对目标电池簇放电,直至目标电池堆放电完毕。
在本实施例中,是公开了一种电池堆的充放电系统,如图9所示,该充放电系统包括储能变流器、储能变流器的输入端上连接有目标电池堆,并且,储能变流器与目标电池堆的连接支路上设置有控制单元。
当目标电池堆达到热备用状态时,控制单元会实时检测目标电池堆在充电过程中的目标电池簇的第一运行参数,并判断第一运行参数是否满足第一预设条件,若是,则对目标电池簇充电,直至目标电池堆充电完毕;如果目标电池堆需要放电时,控制单元会实时检测目标电池簇在放电过程中的第二运行参数,并判断目标电池簇的第二运行参数是否满足第二预设条件,若是,则对目标电池簇放电,直至目标电池堆放电完毕。其中,控制单元对目标电池堆充放电的具体控制过程,可参见上述实施例所公开的内容,此处不再作具体赘述。
显然,在本实施例中,在对目标电池堆进行充放电的过程中,控制单元通过对目标电池堆中目标电池簇的充放电过程中运行参数进行限制,解决了目标电池堆在使用过程中的滥用问题,由此可以保证目标电池堆在充放电过程中的安全性及可靠性。
本说明书中各个实施例采用递进的方式描述,每个实施例重点说明的都是与其它实施例的不同之处,各个实施例之间相同或相似部分互相参见即可。
最后,还需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上对本发明所提供的一种电池堆的充放电方法、装置、介质及系统 进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims (10)

  1. 一种电池堆的充放电方法,其特征在于,包括:
    当目标电池堆达到热备用状态时,实时检测所述目标电池堆在充电的过程中目标电池簇的第一运行参数;其中,所述目标电池簇为所述目标电池堆中任意一个电池簇;
    判断所述第一运行参数是否满足第一预设条件;
    若是,则对所述目标电池簇充电,直至所述目标电池堆充电完毕;
    实时检测所述目标电池簇在放电过程中的第二运行参数,并判断所述第二运行参数是否满足第二预设条件;
    若是,则对所述目标电池簇放电,直至所述目标电池堆放电完毕。
  2. 根据权利要求1所述的方法,其特征在于,所述判断所述第一运行参数是否满足第一预设条件的过程之后,还包括:
    若否,则对所述目标电池堆的充电过程进行限制。
  3. 根据权利要求1所述的方法,其特征在于,还包括:
    对所述目标电池堆进行上电时,实时检测所述目标电池簇在上电过程中的第三运行参数;
    判断所述第三运行参数是否满足第三预设条件;
    若是,则对所述目标电池簇上电。
  4. 根据权利要求1所述的方法,其特征在于,还包括:
    对所述目标电池堆进行下电时,实时检测所述目标电池簇在下电过程中的第四运行参数;
    判断所述第四运行参数是否满足第四预设条件;
    若是,则对所述目标电池簇下电。
  5. 根据权利要求1至4任一项所述的方法,其特征在于,所述当目标电池堆达到热备用状态的过程之前,还包括:
    当对所述目标电池堆充电时,对所述目标电池堆中当前电压最低的电池簇进行充电;
    判断所述目标电池堆中当前电压最低的电池簇与当前电压次低的电池簇的电压差值是否满足预设阈值;
    若是,则对所述目标电池堆中当前电压次低的电池簇进行充电;
    重复执行所述对所述目标电池堆中当前电压最低的电池簇进行充电的步骤,直至所述目标电池堆达到热备用状态。
  6. 根据权利要求5所述的方法,其特征在于,所述当对所述目标电池堆充电时,对所述目标电池堆中当前电压最低的电池簇进行充电的过程之前,还包括:
    当首次对目标电池堆充电时,判断所述目标电池堆中电压最低的电池簇的接触器是否处于闭合状态;
    若是,则对所述目标电池堆的预充电路进行充电,并判断所述预充电路是否满足第三预设条件;
    若是,则对所述目标电池堆充电。
  7. 根据权利要求6所述的方法,其特征在于,所述当首次对目标电池堆充电时,判断所述目标电池堆中电压最低的电池簇的接触器是否处于闭合状态的过程,包括:
    当首次对所述目标电池堆充电时,判断所述目标电池簇是否能够完成开机自检;
    若是,则判断所述目标电池堆中电压最低的电池簇的接触器是否处于闭合状态。
  8. 一种电池堆的充放电装置,其特征在于,包括:
    第一检测模块,用于当目标电池堆达到热备用状态时,实时检测所述目标电池堆在充电的过程中目标电池簇的第一运行参数;其中,所述目标电池簇为所述目标电池堆中任意一个电池簇;
    参数判断模块,用于判断所述第一运行参数是否满足第一预设条件;
    电池簇充电模块,用于若是,则对所述目标电池簇充电,直至所述目标电池堆充电完毕;
    第二检测模块,用于实时检测所述目标电池簇在放电过程中的第二运行参数,并判断所述第二运行参数是否满足第二预设条件;
    电池簇放电模块,用于若是,则对所述目标电池簇放电,直至所述目标电池堆放电完毕。
  9. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质上存储有计算机程序,所述计算机程序被处理器执行时实现如权利要求1至7任一项所述的电池堆的充放电方法的步骤。
  10. 一种电池堆的充放电系统,其特征在于,包括:储能变流器,所述储能变流器的输入端上连接有目标电池堆,并且,所述储能变流器与所述目标电池堆的连接支路上设置有控制单元;所述控制单元用于执行以下步骤:
    当目标电池堆达到热备用状态时,实时检测所述目标电池堆在充电的过程中目标电池簇的第一运行参数;其中,所述目标电池簇为所述目标电池堆中任意一个电池簇;
    判断所述第一运行参数是否满足第一预设条件;
    若是,则对所述目标电池簇充电,直至所述目标电池堆充电完毕;
    实时检测所述目标电池簇在放电过程中的第二运行参数,并判断所述第二运行参数是否满足第二预设条件;
    若是,则对所述目标电池簇放电,直至所述目标电池堆放电完毕。
PCT/CN2018/120607 2018-12-12 2018-12-12 一种电池堆的充放电方法、装置、介质及系统 WO2020118561A1 (zh)

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