CN114865734A - Battery power supplementing method, device, system and equipment - Google Patents
Battery power supplementing method, device, system and equipment Download PDFInfo
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- CN114865734A CN114865734A CN202210416149.2A CN202210416149A CN114865734A CN 114865734 A CN114865734 A CN 114865734A CN 202210416149 A CN202210416149 A CN 202210416149A CN 114865734 A CN114865734 A CN 114865734A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The application discloses a battery power supplementing method, device, system and equipment. Wherein, the method comprises the following steps: acquiring a first quantity of batteries to be replaced and first electric quantity information of each battery to be replaced, wherein the first electric quantity information is used for determining a target electricity supplementing state of the batteries to be supplemented for replacing the batteries to be replaced; acquiring second electric quantity information of each battery to be compensated in the first number of batteries to be compensated; determining a target power supplementing mode of each battery to be supplemented based on the first quantity and the second electric quantity information, and supplementing power for each battery to be supplemented based on the target power supplementing mode and the target power supplementing state, wherein the target power supplementing mode at least comprises one of the following modes: the batteries complement each other, the power grid charges the batteries, and the batteries discharge to the power grid. The method and the device solve the technical problems that in the related art, when a battery system fails, the electricity supplementing process of a new battery is complex, and the operation and maintenance cost and the electricity charge cost are high.
Description
Technical Field
The application relates to the technical field of battery charging and discharging, in particular to a battery power supplementing method, device, system and equipment.
Background
When a battery system fails, part of batteries in the battery system often need to be replaced, and during replacement, the SOC (State of Charge, also called residual capacity) of a new battery needs to be kept consistent with the SOC of an old battery in the battery system, otherwise, due to the effect of connecting wood barrels in series, the capacity of the whole battery system is reduced, and the voltage deviation is too large.
In the traditional scheme, operation and maintenance personnel need to go to the site to confirm the failure reason of the old battery and the SOC of the old battery when the old battery fails, then charge and discharge calibration is carried out on the new battery, and the new battery is used for replacing the old battery after the SOC of the new battery and the SOC of the old battery are kept consistent, so that the whole process is time-consuming and labor-consuming, and the operation and maintenance cost is high; meanwhile, in the charging and discharging calibration process, the cost of the required electricity fee is high because the electric quantity of the battery is directly discharged into the power grid or directly consumed, and then the power is acquired from the power grid to charge the battery.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the application provides a battery power supplementing method, device, system and equipment, and aims to at least solve the technical problems that in the related art, when a battery system fails, the process of supplementing power to a new battery is complex, and the operation and maintenance cost and the electricity charge cost are high.
According to an aspect of an embodiment of the present application, there is provided a battery recharging method, including: acquiring a first quantity of batteries to be replaced and first electric quantity information of each battery to be replaced, wherein the first electric quantity information is used for determining a target electricity supplementing state of the batteries to be supplemented for replacing the batteries to be replaced; acquiring second electric quantity information of each battery to be compensated in the first number of batteries to be compensated; determining a target power supplementing mode of each battery to be supplemented based on the first quantity and the second electric quantity information, and supplementing power for each battery to be supplemented based on the target power supplementing mode and the target power supplementing state, wherein the target power supplementing mode at least comprises one of the following modes: the batteries complement each other, the power grid charges the batteries, and the batteries discharge to the power grid.
Optionally, the first number is equal to one, the first electric quantity information at least includes a first state of charge, the second electric quantity information at least includes a second state of charge, and the target power supplement state of the battery to be replaced is determined to be the first state of charge of the battery to be replaced; determining whether the second state of charge of the battery to be recharged is equal to zero; when the second charge state is equal to zero, charging the battery to be compensated through the power grid until the charge state of the battery to be compensated reaches the target power compensation state; and when the second charge state is larger than zero, controlling the battery to be compensated to discharge to a power grid until the charge state of the battery to be compensated is equal to zero, and then charging the battery to be compensated through the power grid until the charge state of the battery to be compensated reaches the target charge state.
Optionally, the first number is greater than one, the battery to be compensated is divided into a first battery pack and a second battery pack, the first battery pack comprises a first battery to be compensated, and the second battery pack comprises a second battery to be compensated; supplementing power to the first battery to be supplemented through the second battery to be supplemented until the electric quantity of the first battery to be supplemented reaches the target power supplementing state; when the number of second batteries to be compensated in the second battery pack is more than one, acquiring second electric quantity information of the second batteries to be compensated again, and repeatedly grouping and compensating the second batteries to be compensated until the last battery to be compensated remains; and for the last battery to be compensated, compensating the power of the last battery to be compensated through the power grid until the electric quantity of the last battery to be compensated reaches the target power compensation state.
Optionally, all the batteries to be compensated are sorted based on the second state of charge of each battery to be compensated, and the batteries to be compensated are divided into the first battery pack and the second battery pack based on a sorting result, wherein the sum of the second state of charge of the first batteries to be compensated in the first battery pack does not exceed the sum of the second state of charge of the second batteries to be compensated in the second battery pack.
Optionally, the first electric quantity information at least includes a first state of charge, the second electric quantity information at least includes a second state of charge, and the target power compensation state of each battery to be compensated is determined to be the first state of charge of the battery to be replaced corresponding to the battery to be compensated; for each first battery to be compensated, controlling the first battery to be compensated to discharge to the second battery to be compensated until the state of charge of the first battery to be compensated is equal to zero; and then controlling the second battery to be compensated to charge the first battery to be compensated until the charge state of the first battery to be compensated reaches the target power compensation state.
Optionally, when the current second state of charge of the last battery to be compensated is equal to zero, charging the last battery to be compensated through the power grid until the state of charge of the last battery to be compensated reaches the target state of charge; when the current second state of charge of the last battery to be compensated is larger than zero, controlling the last battery to be compensated to discharge to a power grid until the state of charge of the last battery to be compensated is equal to zero; and charging the last battery to be compensated through the power grid until the charge state of the last battery to be compensated reaches the target power compensation state.
Optionally, when the first battery to be compensated is controlled to discharge to the second battery to be compensated, if the state of charge of the second battery to be compensated is full but the state of charge of the first battery to be compensated is still greater than zero, the first battery to be compensated is controlled to continue to discharge to the power grid until the state of charge of the first battery to be compensated is equal to zero.
Optionally, when the second battery to be compensated is controlled to charge the first battery to be compensated, if the state of charge of the second battery to be compensated is equal to zero but the state of charge of the first battery to be compensated still does not reach the target compensation state, the first battery to be compensated is continuously charged through the power grid until the state of charge of the first battery to be compensated reaches the target compensation state.
Optionally, the first number of the batteries to be replaced is obtained from a cloud platform data center, and the first electric quantity information of each battery to be replaced is obtained, where the cloud platform data center is configured to manage battery information, and the first electric quantity information at least includes one of: a first state of charge, a first voltage.
Optionally, second electric quantity information of each battery to be recharged is acquired through a communication interface connected with the battery to be recharged, and the second electric quantity information at least includes one of the following information: a second state of charge, a second voltage.
Optionally, after the power compensation of the battery to be compensated is completed, notification information is sent, where the notification information is used to notify a target object that the power compensation of the battery to be compensated is completed, and the battery to be replaced may be replaced.
According to another aspect of the embodiments of the present application, there is also provided a battery charging apparatus, including: the first obtaining module is used for obtaining a first number of batteries to be replaced and first electric quantity information of each battery to be replaced, and the first electric quantity information is used for determining a target electricity supplementing state of the battery to be supplemented, which is used for replacing the battery to be replaced; the second obtaining module is used for obtaining second electric quantity information of each battery to be compensated in the first number of batteries to be compensated; the power supply module is used for determining a target power supply mode of each battery to be supplied based on the first quantity and the second electric quantity information, and supplying power to each battery to be supplied based on the target power supply mode and the target power supply state, wherein the target power supply mode at least comprises one of the following modes: the batteries complement each other, the power grid charges the batteries, and the batteries discharge to the power grid.
According to another aspect of the embodiments of the present application, there is also provided a battery recharging system, including: the energy management unit is used for executing the battery power supply method; the communication unit is used for establishing communication connection between the energy management unit and a cloud platform data center; the communication interface is used for establishing communication connection between the energy management unit and a battery to be supplemented; the alternating current-direct current conversion unit is positioned between a power grid and a direct current bus and is used for converting alternating current and direct current; and the direct current conversion unit is positioned between the direct current bus and the battery to be compensated and is used for converting direct current and direct current.
According to another aspect of the embodiments of the present application, there is also provided a battery recharging apparatus, including: the battery charging system comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the battery charging method through the computer program.
In the method, first quantity of batteries to be replaced and first electric quantity information of each battery to be replaced are obtained, and the first electric quantity information is used for determining a target electricity supplementing state of the batteries to be supplemented, in which the batteries to be replaced are replaced; simultaneously acquiring second electric quantity information of each battery to be compensated in the first number of batteries to be compensated; and then determining a target power supplementing mode of each battery to be supplemented based on the first quantity and the second electric quantity information, wherein the target power supplementing mode comprises the following steps: the batteries are mutually compensated, the power grid charges the batteries, and the batteries discharge to the power grid; and finally, performing power compensation on each battery to be compensated based on the target power compensation mode and the target power compensation state. The relevant information of the battery is acquired on line, so that operation and maintenance personnel can be prevented from confirming the electricity supplementing data to and fro on site, and the operation and maintenance cost is reduced; the method has the advantages that the electricity supplementing mode is automatically selected based on the relevant information of the batteries to supplement electricity for the batteries, electricity is supplemented between the batteries in a preferred selection mode, the process is simple, and the electricity charge cost can be reduced, so that the technical problems that the electricity supplementing process for a new battery is complex, and the operation and maintenance cost and the electricity charge cost are high in the related art when a battery system fails are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a battery recharging system according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a battery recharging method according to an embodiment of the present application;
FIG. 3 is a schematic diagram of the energy flow of complementary power between batteries according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the energy flow of a grid charging a battery according to an embodiment of the present application;
FIG. 5 is a schematic diagram of the energy flow of a battery discharging into a power grid according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a single cell recharging process according to an embodiment of the present application;
FIG. 7 is a schematic illustration of a process for recharging a plurality of batteries in accordance with an embodiment of the present application;
fig. 8 is a schematic structural diagram of a battery charging device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
In order to solve the technical problems that the process of supplementing the electricity of a new battery is complex and the operation and maintenance cost and the electricity charge cost are high when a battery system fails in the related technology, the embodiment of the application provides an automatic battery electricity supplementing scheme, wherein the operation and maintenance personnel can be prevented from confirming electricity supplementing data to and fro on site and the operation and maintenance cost is reduced by acquiring the relevant information of the battery on line; the power supplementing mode is automatically selected to supplement power for the battery based on the relevant information of the battery, and mutual power supplementing between the batteries is preferentially selected, so that the process is simple, and the cost of the electric charge can be reduced.
Specifically, as shown in fig. 1, the present embodiment provides a battery recharging system, which includes at least: energy management unit 11, communication unit 12, communication interface 13 (1-n), alternating current-direct current conversion unit 14 and direct current conversion unit 15 (1-n), wherein:
the energy management unit 11 is a core unit of the whole system, and is configured to acquire relevant information of a battery to be replaced from the cloud platform data center, and acquire relevant information of corresponding batteries to be recharged from the communication interfaces 13(1 to n), respectively; and then analyzing the information to determine a target power supplementing state and a target power supplementing mode of each battery to be supplemented, wherein the target power supplementing mode at least comprises one of the following modes: the batteries are mutually compensated, the power grid charges the batteries, and the batteries discharge to the power grid; and finally, performing power compensation on each battery to be compensated based on the target power compensation mode to enable the battery to be compensated to reach the target power compensation state.
The cloud platform data center is used for managing relevant information such as the running state of the battery, such as the information of the battery capacity, the SOC (state of charge), the voltage and the like; the system can provide a client or an interactive interface such as an APP, a WEB page or an upper computer, and is used for realizing man-machine interaction and facilitating operation and maintenance personnel to obtain required battery information.
And the communication unit 12 is used for establishing communication connection between the energy management unit 11 and the cloud platform data center.
And the communication interfaces 13 (1-n) are used for establishing communication connection between the energy management unit 11 and the batteries (1-n) to be compensated.
The ac/dc Conversion unit 14 is located between the power grid and the dc bus, and is configured to perform Conversion between ac and dc, and may be specifically an energy storage converter pcs (power Conversion system), and is usually used in cooperation with a disconnecting switch, for example, in fig. 1, a switch x controls on/off between the ac/dc Conversion unit 14 and the power grid.
The dc conversion units 15(1 to n) are located between the dc bus and the battery to be compensated, and are used for performing conversion between dc and dc, and are usually used in conjunction with a breaking switch, for example, in fig. 1, the switches (1 to n) respectively control on/off between the dc conversion units 15(1 to n) and the battery (1 to n) to be compensated.
On the basis of the battery power supply system, the embodiment of the application further provides a battery power supply method, which is used for specifically explaining a flow executed by the energy management unit in the battery power supply system. It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
Fig. 2 is a schematic flow chart of an alternative battery recharging method according to an embodiment of the present application, and as shown in fig. 2, the method at least includes steps S202-S206, where:
step S202, acquiring a first quantity of the batteries to be replaced and first electric quantity information of each battery to be replaced, wherein the first electric quantity information is used for determining a target electricity supplementing state of the batteries to be supplemented, in which the batteries to be replaced are replaced.
As an optional implementation manner, the energy management unit may obtain, through the communication unit, a first number of batteries to be replaced from a cloud platform data center, and obtain first electric quantity information of each battery to be replaced, where the cloud platform data center is configured to manage battery information, and the first electric quantity information includes at least one of: a first state of charge, a first voltage.
Specifically, an operation and maintenance person can input a site address of a battery to be replaced in a client or an interactive interface, and since the SOC of a new battery and an SOC of an old battery are required to be consistent when the batteries are replaced, the energy management unit obtains a first number, a first state of charge and a first voltage of the battery to be replaced from the cloud platform data center, the first number is used for determining the number of the batteries to be replenished for replacing the batteries to be replaced, and the first state of charge and the first voltage can be used for determining a target state of replenishment of the batteries to be replenished.
Step S204, second electric quantity information of each battery to be compensated in the first number of batteries to be compensated is obtained.
Specifically, the energy management unit may determine to-be-compensated batteries that are the same in number as the to-be-replaced batteries, and obtain second electric quantity information of each to-be-compensated battery through a communication interface connected to the to-be-compensated battery, where the second electric quantity information includes at least one of: a second state of charge, a second voltage.
Step S206, determining a target power supplementing mode of each battery to be supplemented based on the first quantity and the second electric quantity information, and supplementing power for each battery to be supplemented based on the target power supplementing mode and the target power supplementing state, wherein the target power supplementing mode at least comprises one of the following modes: the batteries complement each other, the power grid charges the batteries, and the batteries discharge to the power grid.
Energy flows under a Battery to Battery (BtoB) mode as shown in fig. 3, wherein a switch x is turned off, switches (1-n) are turned on, and batteries (1-n) to be charged are charged and discharged through direct current conversion units 15 (1-n); energy flows in a Grid to Battery (GtoB) charging mode by a power Grid as shown in fig. 4, wherein a switch x and switches (1-n) are both closed, and the power Grid charges batteries (1-n) to be charged through an alternating current-direct current conversion unit 14 and direct current conversion units 15 (1-n); energy flows in a Battery to Grid (BtoG) discharging mode as shown in fig. 5, wherein switches (1-n) and switch x are closed, and batteries (1-n) to be compensated are discharged to the power Grid through direct current conversion units 15 (1-n) and alternating current-direct current conversion unit 14.
In some optional embodiments of the present application, the energy management unit may determine a target power supplement mode of each battery to be supplemented according to the number of the batteries to be supplemented and the current second electric quantity information, determine a target power supplement state of each battery to be supplemented according to the corresponding first electric quantity information of the battery to be replaced, and perform power supplement on the battery to be supplemented in the target power supplement mode. It should be noted that, when the electricity of the battery to be compensated is actually compensated, the target electricity compensation mode is not limited to the single electricity compensation mode, but may be used in combination with multiple electricity compensation modes.
Specifically, when the first number of the batteries to be recharged is equal to one, the obtained first electric quantity information at least includes a first charge state, the second electric quantity information at least includes a second charge state, and the batteries to be recharged can be recharged in the following manner:
determining a target power supplement state of a battery to be supplemented as a first charge state of the battery to be replaced; determining whether the second state of charge of the battery to be compensated is equal to zero; when the second charge state is equal to zero, charging the battery to be compensated through the power grid until the charge state of the battery to be compensated reaches a target power compensation state; and when the second charge state is larger than zero, controlling the battery to be charged to discharge to the power grid until the charge state of the battery to be charged is equal to zero, and then charging the battery to be charged through the power grid until the charge state of the battery to be charged reaches a target charge state.
Fig. 6 shows a schematic flow chart of performing power supplement on a single battery to be supplemented, assuming that a first state of charge of the battery to be replaced is SOC ', and a second state of charge of the battery to be supplemented is SOC, first determining whether the SOC is equal to or greater than 0, and if the SOC is equal to 0, directly charging the battery to be supplemented from a power grid based on a GtoB mode until the SOC is equal to SOC'; if the SOC is larger than 0, the battery to be compensated is discharged to the power grid by the battery to be compensated based on the BtoG mode until the SOC is equal to 0, and then the battery to be compensated is charged to the SOC equal to the SOC' by the power grid based on the GtoB mode.
Optionally, when the first number of the batteries to be recharged is greater than one, the obtained first electric quantity information at least includes a first charge state, the second electric quantity information at least includes a second charge state, and the batteries to be recharged can be recharged in the following manner:
firstly, dividing all batteries to be compensated into a first battery pack and a second battery pack, wherein the first battery pack comprises a first battery to be compensated, and the second battery pack comprises a second battery to be compensated; supplementing power to the first battery to be supplemented through the second battery to be supplemented until the electric quantity of the first battery to be supplemented reaches a target power supplementing state; when the number of second batteries to be compensated in the second battery pack is more than one, acquiring second electric quantity information of the second batteries to be compensated again, and repeatedly grouping and compensating the second batteries to be compensated until the last battery to be compensated remains; and for the last battery to be compensated, compensating the power of the last battery to be compensated through the power grid until the electric quantity of the last battery to be compensated reaches the target power compensation state.
When a plurality of batteries to be compensated are grouped, all the batteries to be compensated can be sorted firstly based on the second charge state of each battery to be compensated, and then the batteries to be compensated are divided into a first battery pack and a second battery pack based on the sorting result, wherein the sum of the second charge states of the first batteries to be compensated in the first battery pack does not exceed the sum of the second charge states of the second batteries to be compensated in the second battery pack.
For example, the first state of charge of N (N ≧ 2) batteries to be replaced are SOC' 1 、…、SOC′ n The second states of charge of the N batteries to be compensated are respectively SOC 1 、…、SOC n First, the SOC 1 、…、SOC n Sorting from small to large or from large to small, then dividing into A, B two groups, i.e. N-N A +N B Making the sum of the second state of charge of the batteries in the group A not exceed the sum of the second state of charge of the batteries in the group B, namely Sum (SOC) A )≤sum(SOC B ). Can be generallyDividing the sorted N batteries to be compensated by adopting a dichotomy, namely N A ＝N B Or N A +1＝N B 。
When the second battery to be compensated supplies power to the first battery to be compensated, the target power compensation state of each battery to be compensated can be determined as the first charge state of the battery to be replaced corresponding to the battery to be compensated; for each first battery to be compensated, controlling the first battery to be compensated to discharge to the second battery to be compensated until the state of charge of the first battery to be compensated is equal to zero; and then controlling the second battery to be compensated to charge the first battery to be compensated until the charge state of the first battery to be compensated reaches the target power compensation state.
When the power is supplemented to the last battery to be supplemented through the power grid, the power supplementing process of a single battery to be supplemented can be referred, and when the current second charge state of the last battery to be supplemented is equal to zero, the last battery to be supplemented is charged through the power grid until the charge state of the last battery to be supplemented reaches the target power supplementing state; when the current second state of charge of the last battery to be compensated is larger than zero, controlling the last battery to be compensated to discharge to the power grid until the state of charge of the last battery to be compensated is equal to zero; and charging the last battery to be compensated through the power grid until the charge state of the last battery to be compensated reaches the target power compensation state.
By the aid of the grouping power supplementing mode, power supplementing operation and maintenance time can be shortened, and when the first battery to be supplemented discharges to the second battery to be supplemented, all electric quantity can be transferred to the second battery to be supplemented without discharging to a power grid; when the second battery to be compensated charges the first battery to be compensated, the second battery to be compensated can be directly enabled to reach the target power compensation state without power collection from the power grid, so that the loss of the power grid electric energy is reduced, and the electricity cost is reduced. Of course, when some extreme conditions are met, the power supplementing operation can be continued in the following manner.
Alternatively, if there may be some first to-be-compensated batteries with the initial second state of charge equal to zero, the first to-be-compensated battery is charged directly from the second to-be-compensated battery without discharging the second to-be-compensated battery until it reaches the target state of charge.
Optionally, when the first battery to be compensated is controlled to discharge to the second battery to be compensated, if the state of charge of the second battery to be compensated is full but the state of charge of the first battery to be compensated is still greater than zero, the first battery to be compensated is controlled to continue to discharge to the power grid until the state of charge of the first battery to be compensated is equal to zero.
Optionally, when the second battery to be compensated is controlled to charge the first battery to be compensated, if the state of charge of the second battery to be compensated is already equal to zero but the state of charge of the first battery to be compensated still does not reach the target state of compensation, the first battery to be compensated is continuously charged through the power grid until the state of charge of the first battery to be compensated reaches the target state of compensation.
FIG. 7 is a schematic diagram illustrating a process of charging a plurality of batteries to be charged, first, a second state of charge SOC of the N batteries to be charged (1～n) Sorting, and dividing into A, B two groups; discharging from the group A cells to the group B cells based on the BtoB mode until the state of charge of all the group A cells is equal to zero, namely the SOC A 0; continuing to charge the group A batteries from the group B batteries based on the BtoB mode until the charge states of all the group A batteries reach a target complementary charge state, namely SOC A ＝SOC′ A Completing the electricity compensation of the group A batteries; and if the number of the batteries to be compensated in the group B is still larger than 1, acquiring the second charge state of the batteries in the group B again, repeating the grouping power compensation operation on the batteries in the group B until only one battery to be compensated exists in the group B, and performing power compensation on the last battery to be compensated by referring to the power compensation process of the single battery to be compensated.
In some optional embodiments of the application, after the power compensation of the battery to be compensated is completed, the energy management unit may send notification information to the cloud platform data center through the communication unit, where the notification information is used to notify that the power compensation of the battery to be compensated of the target object is completed, and the battery to be replaced may be replaced.
In the embodiment of the application, first quantity of batteries to be replaced and first electric quantity information of each battery to be replaced are obtained, and the first electric quantity information is used for determining a target electricity supplementing state of the battery to be supplemented, in which the battery to be replaced is replaced; simultaneously acquiring second electric quantity information of each battery to be compensated in the first number of batteries to be compensated; and then determining a target power supplementing mode of each battery to be supplemented based on the first quantity and the second electric quantity information, wherein the target power supplementing mode comprises the following steps: the batteries are mutually compensated, the power grid charges the batteries, and the batteries discharge to the power grid; and finally, performing power compensation on each battery to be compensated based on the target power compensation mode and the target power compensation state. The relevant information of the battery is acquired on line, so that operation and maintenance personnel can be prevented from confirming the electricity supplementing data to and fro on site, and the operation and maintenance cost is reduced; the method has the advantages that the electricity supplementing mode is automatically selected based on the relevant information of the batteries to supplement electricity for the batteries, electricity is supplemented between the batteries in a preferred selection mode, the process is simple, and the electricity charge cost can be reduced, so that the technical problems that the electricity supplementing process for a new battery is complex, and the operation and maintenance cost and the electricity charge cost are high in the related art when a battery system fails are solved.
Example 2
According to an embodiment of the present application, there is also provided a battery recharging apparatus for implementing the above battery recharging method, as shown in fig. 8, the apparatus includes at least a first obtaining module 81, a second obtaining module 82 and a recharging module 83, where:
the first obtaining module 81 is configured to obtain a first number of the batteries to be replaced and first electric quantity information of each battery to be replaced, where the first electric quantity information is used to determine a target power supplement state of the battery to be supplemented, in which the battery to be replaced is replaced.
Specifically, the first obtaining module may obtain, from the cloud platform data center through the communication unit, a first number of batteries to be replaced, and obtain first electric quantity information of each battery to be replaced, where the cloud platform data center is configured to manage battery information, and the first electric quantity information at least includes one of: a first state of charge, a first voltage. For example, an operation and maintenance person may input a site address of a battery to be replaced in a client or an interactive interface, and since it is necessary to ensure that the SOC of a new battery and an SOC of an old battery are consistent when the battery is replaced, the first obtaining module may obtain, from the cloud platform data center, a first number, a first state of charge, and a first voltage of the battery to be replaced, where the first number is used to determine the number of the battery to be replenished which is used to replace the battery to be replaced, and the first state of charge and the first voltage may be used to determine a target state of replenishment of the battery to be replenished.
The second obtaining module 82 is configured to obtain second electric quantity information of each battery to be compensated in the first number of batteries to be compensated.
Specifically, the second obtaining module may determine to-be-compensated batteries that are the same in number as the to-be-replaced batteries, and obtain second electric quantity information of each to-be-compensated battery through a communication interface connected to the to-be-compensated battery, where the second electric quantity information at least includes one of the following: a second state of charge, a second voltage.
The power supply module 83 is configured to determine a target power supply mode of each battery to be supplied based on the first quantity and the second electric quantity information, and supply power to each battery to be supplied based on the target power supply mode and the target power supply state, where the target power supply mode at least includes one of: the batteries complement each other, the power grid charges the batteries, and the batteries discharge to the power grid.
In some optional embodiments of the present application, the power supplement module may determine a target power supplement mode of each battery to be supplemented according to the number of the batteries to be supplemented and the current second electric quantity information, determine a target power supplement state of each battery to be supplemented according to the corresponding first electric quantity information of the battery to be replaced, and then supplement power to the battery to be supplemented in the target power supplement mode. It should be noted that, when the electricity of the battery to be compensated is actually compensated, the target electricity compensation mode is not limited to the single electricity compensation mode, but may be used in combination with multiple electricity compensation modes.
Specifically, when the first number of the batteries to be recharged is equal to one, the obtained first electric quantity information at least includes a first charge state, the second electric quantity information at least includes a second charge state, and the batteries to be recharged can be recharged in the following manner:
determining a target power supplement state of a battery to be supplemented as a first charge state of the battery to be replaced; determining whether the second state of charge of the battery to be compensated is equal to zero; when the second charge state is equal to zero, charging the battery to be compensated through the power grid until the charge state of the battery to be compensated reaches a target power compensation state; and when the second charge state is larger than zero, controlling the battery to be charged to discharge to the power grid until the charge state of the battery to be charged is equal to zero, and then charging the battery to be charged through the power grid until the charge state of the battery to be charged reaches a target charge state.
Optionally, when the first number of the batteries to be recharged is greater than one, the obtained first electric quantity information at least includes a first charge state, the second electric quantity information at least includes a second charge state, and the batteries to be recharged can be recharged in the following manner:
firstly, dividing all batteries to be compensated into a first battery pack and a second battery pack, wherein the first battery pack comprises a first battery to be compensated, and the second battery pack comprises a second battery to be compensated; supplementing power to the first battery to be supplemented through the second battery to be supplemented until the electric quantity of the first battery to be supplemented reaches a target power supplementing state; when the number of second batteries to be compensated in the second battery pack is more than one, acquiring second electric quantity information of the second batteries to be compensated again, and repeatedly grouping and compensating the second batteries to be compensated until the last battery to be compensated remains; and for the last battery to be compensated, compensating the power of the last battery to be compensated through the power grid until the electric quantity of the last battery to be compensated reaches the target power compensation state.
When a plurality of electric batteries to be compensated are grouped, all the electric batteries to be compensated can be sorted firstly based on the second charge state of each electric battery to be compensated, and then the electric batteries to be compensated are divided into a first battery pack and a second battery pack based on the sorting result, wherein the sum of the second charge states of the first electric batteries to be compensated in the first battery pack is not more than the sum of the second charge states of the second electric batteries to be compensated in the second battery pack.
When the second battery to be compensated supplies power to the first battery to be compensated, the target power compensation state of each battery to be compensated can be determined as the first charge state of the battery to be replaced corresponding to the battery to be compensated; for each first battery to be compensated, controlling the first battery to be compensated to discharge to the second battery to be compensated until the state of charge of the first battery to be compensated is equal to zero; and then controlling the second battery to be compensated to charge the first battery to be compensated until the charge state of the first battery to be compensated reaches the target power compensation state.
When the power is supplemented to the last battery to be supplemented through the power grid, the power supplementing process of a single battery to be supplemented can be referred, and when the current second charge state of the last battery to be supplemented is equal to zero, the last battery to be supplemented is charged through the power grid until the charge state of the last battery to be supplemented reaches the target power supplementing state; when the current second state of charge of the last battery to be compensated is larger than zero, controlling the last battery to be compensated to discharge to the power grid until the state of charge of the last battery to be compensated is equal to zero; and charging the last battery to be compensated through the power grid until the charge state of the last battery to be compensated reaches the target power compensation state.
By the aid of the grouping power supplementing mode, power supplementing operation and maintenance time can be shortened, and when the first battery to be supplemented discharges to the second battery to be supplemented, all electric quantity can be transferred to the second battery to be supplemented without discharging to a power grid; when the second battery to be compensated charges the first battery to be compensated, the second battery to be compensated can be directly enabled to reach the target power compensation state without power collection from the power grid, so that the loss of the power grid electric energy is reduced, and the electricity cost is reduced. Of course, when some extreme conditions are met, the power supplementing operation can be continued in the following manner.
Alternatively, if there may be some first to-be-compensated batteries with the initial second state of charge equal to zero, the first to-be-compensated battery is charged directly from the second to-be-compensated battery without discharging the second to-be-compensated battery until it reaches the target state of charge.
Optionally, when the first battery to be compensated is controlled to discharge to the second battery to be compensated, if the state of charge of the second battery to be compensated is full but the state of charge of the first battery to be compensated is still greater than zero, the first battery to be compensated is controlled to continue to discharge to the power grid until the state of charge of the first battery to be compensated is equal to zero.
Optionally, when the second battery to be compensated is controlled to charge the first battery to be compensated, if the state of charge of the second battery to be compensated is already equal to zero but the state of charge of the first battery to be compensated still does not reach the target state of compensation, the first battery to be compensated is continuously charged through the power grid until the state of charge of the first battery to be compensated reaches the target state of compensation.
In some optional embodiments of the present application, the battery recharging apparatus further includes a notification module 84, configured to send notification information to the cloud platform data center through the communication unit after the recharging of the battery to be recharged is completed, where the notification information is used to notify that the target object finishes recharging the battery to be recharged, and the battery to be replaced may be replaced.
It should be noted that, in the embodiment of the present application, each module in the battery recharging apparatus corresponds to each implementation step of the battery recharging method in embodiment 1 one to one, and since the detailed description is already performed in embodiment 1, some details that are not shown in this embodiment may refer to embodiment 1, and are not described herein again.
Example 3
According to an embodiment of the present application, there is also provided a nonvolatile storage medium including a stored program, wherein, when the program is executed, a device in which the nonvolatile storage medium is located is controlled to execute the battery recharging method in embodiment 1.
According to an embodiment of the present application, there is also provided a processor configured to execute a program, where the program executes the battery recharging method in embodiment 1.
According to an embodiment of the present application, there is also provided a battery charging apparatus including: a memory in which a computer program is stored, and a processor configured to execute the battery charging method in embodiment 1 by the computer program.
Optionally, the program executes when executing the following steps: acquiring a first quantity of batteries to be replaced and first electric quantity information of each battery to be replaced, wherein the first electric quantity information is used for determining a target electricity supplementing state of the batteries to be supplemented, in which the batteries to be replaced are replaced; acquiring second electric quantity information of each battery to be compensated in the first number of batteries to be compensated; determining a target power supplementing mode of each battery to be supplemented based on the first quantity and the second electric quantity information, and supplementing power for each battery to be supplemented based on the target power supplementing mode and the target power supplementing state, wherein the target power supplementing mode at least comprises one of the following modes: the batteries complement each other, the power grid charges the batteries, and the batteries discharge to the power grid.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
In the embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit may be a division of a logic function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or may not be executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (14)
1. A battery power supplementing method is characterized by comprising the following steps:
acquiring a first quantity of batteries to be replaced and first electric quantity information of each battery to be replaced, wherein the first electric quantity information is used for determining a target electricity supplementing state of the batteries to be supplemented for replacing the batteries to be replaced;
acquiring second electric quantity information of each battery to be compensated in the first number of batteries to be compensated;
determining a target power supplementing mode of each battery to be supplemented based on the first quantity and the second electric quantity information, and supplementing power for each battery to be supplemented based on the target power supplementing mode and the target power supplementing state, wherein the target power supplementing mode at least comprises one of the following modes: the batteries complement each other, the power grid charges the batteries, and the batteries discharge to the power grid.
2. The method according to claim 1, wherein the first number is equal to one, the first charge information includes at least a first state of charge, the second charge information includes at least a second state of charge, the target power supplement mode for each of the to-be-supplemented batteries is determined based on the first number and the second charge information, and the power supplement is performed for each of the to-be-supplemented batteries based on the target power supplement mode and the target power supplement state, and the method includes:
determining the target power supplement state of the battery to be supplemented as the first charge state of the battery to be replaced;
determining whether the second state of charge of the battery to be recharged is equal to zero;
when the second charge state is equal to zero, charging the battery to be compensated through the power grid until the charge state of the battery to be compensated reaches the target power compensation state;
and when the second charge state is larger than zero, controlling the battery to be compensated to discharge to a power grid until the charge state of the battery to be compensated is equal to zero, and then charging the battery to be compensated through the power grid until the charge state of the battery to be compensated reaches the target charge state.
3. The method according to claim 1, wherein the first number is greater than one, a target power supplement mode of each battery to be supplemented is determined based on the first number and the second power information, and power supplement is performed on each battery to be supplemented based on the target power supplement mode and the target power supplement state, and the method comprises the following steps:
dividing the battery to be compensated into a first battery pack and a second battery pack, wherein the first battery pack comprises a first battery to be compensated, and the second battery pack comprises a second battery to be compensated;
supplementing power to the first battery to be supplemented through the second battery to be supplemented until the electric quantity of the first battery to be supplemented reaches the target power supplementing state;
when the number of second batteries to be compensated in the second battery pack is more than one, acquiring second electric quantity information of the second batteries to be compensated again, and repeatedly grouping and compensating the second batteries to be compensated until the last battery to be compensated remains;
and for the last battery to be compensated, compensating the power of the last battery to be compensated through the power grid until the electric quantity of the last battery to be compensated reaches the target power compensation state.
4. The method of claim 3, wherein dividing the battery to be recharged into a first battery bank and a second battery bank comprises:
and sequencing all the batteries to be compensated based on the second charge states of the batteries to be compensated, and dividing the batteries to be compensated into the first battery pack and the second battery pack based on a sequencing result, wherein the sum of the second charge states of the first batteries to be compensated in the first battery pack does not exceed the sum of the second charge states of the second batteries to be compensated in the second battery pack.
5. The method according to claim 3, wherein the first power information includes at least a first state of charge, the second power information includes at least a second state of charge, and the second battery to be recharged supplies power to the first battery to be recharged until the power of the first battery to be recharged reaches the target state of recharge, including:
determining the target power supplement state of each battery to be supplemented as the first charge state of the battery to be replaced corresponding to the battery to be supplemented;
for each first battery to be compensated, controlling the first battery to be compensated to discharge to the second battery to be compensated until the state of charge of the first battery to be compensated is equal to zero; and then controlling the second battery to be compensated to charge the first battery to be compensated until the charge state of the first battery to be compensated reaches the target power compensation state.
6. The method according to claim 4, wherein the step of supplementing power to the last battery to be supplemented through a power grid until the electric quantity of the last battery to be supplemented reaches the target power supplementing state comprises the following steps:
when the current second charge state of the last battery to be compensated is equal to zero, charging the last battery to be compensated through a power grid until the charge state of the last battery to be compensated reaches the target power compensation state;
when the current second state of charge of the last battery to be compensated is larger than zero, controlling the last battery to be compensated to discharge to a power grid until the state of charge of the last battery to be compensated is equal to zero; and charging the last battery to be compensated through the power grid until the charge state of the last battery to be compensated reaches the target power compensation state.
7. The method of claim 5, further comprising:
when the first battery to be compensated is controlled to discharge to the second battery to be compensated, if the state of charge of the second battery to be compensated is full but the state of charge of the first battery to be compensated is still greater than zero, the first battery to be compensated is controlled to continue to discharge to a power grid until the state of charge of the first battery to be compensated is equal to zero.
8. The method of claim 5, further comprising:
when the second battery to be compensated is controlled to charge the first battery to be compensated, if the state of charge of the second battery to be compensated is equal to zero but the state of charge of the first battery to be compensated still does not reach the target state of compensation, the first battery to be compensated is continuously charged through a power grid until the state of charge of the first battery to be compensated reaches the target state of compensation.
9. The method of claim 1, wherein obtaining a first number of batteries to be replaced and first charge information for each of the batteries to be replaced comprises:
acquiring the first number of the batteries to be replaced from a cloud platform data center, and acquiring the first electric quantity information of each battery to be replaced, wherein the cloud platform data center is used for managing battery information, and the first electric quantity information at least comprises one of the following information: a first state of charge, a first voltage.
10. The method according to claim 1, wherein obtaining second charge information of each of the first number of the batteries to be compensated comprises:
acquiring second electric quantity information of each battery to be compensated through a communication interface connected with the battery to be compensated, wherein the second electric quantity information at least comprises one of the following information: a second state of charge, a second voltage.
11. The method of claim 1, further comprising:
and after the power compensation of the battery to be compensated is completed, sending notification information, wherein the notification information is used for notifying a target object that the battery to be compensated is completed, and the battery to be replaced can be replaced.
12. A battery charging apparatus, comprising:
the first obtaining module is used for obtaining a first number of batteries to be replaced and first electric quantity information of each battery to be replaced, and the first electric quantity information is used for determining a target electricity supplementing state of the battery to be supplemented, which is used for replacing the battery to be replaced;
the second obtaining module is used for obtaining second electric quantity information of each battery to be compensated in the first number of batteries to be compensated;
the power supply module is used for determining a target power supply mode of each battery to be supplied based on the first quantity and the second electric quantity information, and supplying power to each battery to be supplied based on the target power supply mode and the target power supply state, wherein the target power supply mode at least comprises one of the following modes: the batteries complement each other, the power grid charges the batteries, and the batteries discharge to the power grid.
13. A battery recharging system, comprising:
an energy management unit for performing the battery recharging method of any one of claims 1 to 11;
the communication unit is used for establishing communication connection between the energy management unit and a cloud platform data center;
the communication interface is used for establishing communication connection between the energy management unit and a battery to be supplemented;
the alternating current-direct current conversion unit is positioned between a power grid and a direct current bus and is used for converting alternating current and direct current;
and the direct current conversion unit is positioned between the direct current bus and the battery to be compensated and is used for converting direct current and direct current.
14. A battery recharging apparatus, comprising: a memory having a computer program stored therein and a processor configured to execute the battery recharging method of any one of claims 1-11 by the computer program.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115954565A (en) * | 2022-11-21 | 2023-04-11 | 上海玫克生储能科技有限公司 | Method, system, equipment and medium for supplementing electricity to battery module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115954565A (en) * | 2022-11-21 | 2023-04-11 | 上海玫克生储能科技有限公司 | Method, system, equipment and medium for supplementing electricity to battery module |
| CN115954565B (en) * | 2022-11-21 | 2023-08-25 | 上海玫克生储能科技有限公司 | Battery module electricity supplementing method, system, equipment and medium |
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