CN115603351A - Energy storage system processing method and device, processor and electronic equipment - Google Patents
Energy storage system processing method and device, processor and electronic equipment Download PDFInfo
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- CN115603351A CN115603351A CN202211595630.9A CN202211595630A CN115603351A CN 115603351 A CN115603351 A CN 115603351A CN 202211595630 A CN202211595630 A CN 202211595630A CN 115603351 A CN115603351 A CN 115603351A
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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
- 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
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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Abstract
The application discloses a processing method and device of an energy storage system, a processor and electronic equipment, and relates to the technical field of energy storage. The method comprises the following steps: the method comprises the steps of obtaining the standby power and the standby duration of an inverter, and obtaining the voltage value of a single battery module and the rated capacity of the single battery module; if the number of the battery modules connected in series/in parallel in the energy storage system changes, acquiring the number of the battery modules connected in series/in parallel in the current energy storage system; calculating according to the standby power, the standby time, the voltage value and the rated capacity of a single battery module and the serial/parallel number of the battery modules to obtain a target charge state threshold value; and setting the state of the energy storage system to be a target state according to the target state of charge threshold. Through the application, the problem that the electric quantity resource is wasted due to the fact that the electric quantity threshold value of the energy storage system is set through manual experience in the related art and the difference exists between the electric quantity threshold value and the actual required electric quantity is solved.
Description
Technical Field
The present disclosure relates to the field of energy storage technologies, and in particular, to a processing method and apparatus for an energy storage system, a processor, and an electronic device.
Background
The energy storage is mainly applied to power systems, electric automobiles, rail transit, UPS systems, electric tools, electronic products and the like. With the rapid development of industries such as electric power systems, new energy power generation (wind energy, solar energy and the like), clean energy power automobiles and the like, higher requirements are put on energy storage technologies, particularly large-scale energy storage technologies, and the energy storage technologies become indispensable key links for the development of the industries. Especially, the application of energy storage technology in power systems will become an inevitable trend of smart grid development, and is the central focus of future development of the energy storage industry. Therefore, how to reasonably set the charge threshold of the energy storage system is crucial. In the prior art, the electric quantity threshold of the energy storage system is often set based on past experience, and when the number of the battery modules in the energy storage system is different, the reserved electric quantity threshold is the same, when the number of the battery modules in the battery module string/parallel is small, the reserved electric quantity threshold meets the standby requirement, when the number of the battery modules in the battery module string/parallel is large, the capacity of the battery module in the battery module string/parallel is larger than that of the battery module in the standby requirement under the condition of the same reserved electric quantity threshold, and the redundant capacity of the battery module is unnecessary but obtained from the commercial power supply, so that unnecessary commercial power electric quantity loss is caused.
Aiming at the problem that in the related art, an electric quantity threshold value of an energy storage system is set through manual experience and is different from the actually required electric quantity, so that electric quantity resources are wasted, an effective solution is not provided at present.
Disclosure of Invention
The application mainly aims to provide a processing method and device of an energy storage system, a processor and electronic equipment, so as to solve the problem that in the related art, the electric quantity threshold of the energy storage system is set through manual experience, and is different from the actual required electric quantity, so that electric quantity resources are wasted.
To achieve the above object, according to one aspect of the present application, there is provided a processing method of an energy storage system. The method comprises the following steps: the method comprises the steps of obtaining standby power of an inverter and standby duration of the inverter, and obtaining a voltage value of a single battery module and rated capacity of the single battery module; if the serial/parallel number of the battery modules in the energy storage system changes, acquiring the serial/parallel number of the battery modules in the energy storage system; calculating according to the standby power, the standby duration, the voltage value of the single battery module, the rated capacity and the serial/parallel number of the battery modules to obtain a target state of charge threshold; setting the state of the energy storage system to a target state according to the target state of charge threshold, wherein the target state is one of: charging state, standby state.
Further, before obtaining the current number of series/parallel battery modules in the energy storage system if the number of series/parallel battery modules in the energy storage system changes, the method further includes: determining a connection mode of a battery module in the energy storage system, wherein the connection mode is one of the following modes: series connection and parallel connection; if the battery modules in the energy storage system are connected in series, collecting the total voltage value of the plurality of battery modules in the energy storage system; and detecting whether the serial/parallel connection quantity of the battery modules changes or not according to the total voltage values of the plurality of battery modules and the voltage value of the single battery module.
Further, if the connection mode of the battery modules in the energy storage system is parallel connection, the method further comprises: traversing the communication address of each battery module and the number of each battery module in the energy storage system; and detecting whether the serial/parallel number of the battery modules changes or not according to the communication address of each battery module and the serial number of each battery module.
Further, the method further comprises: if the serial/parallel number of the battery modules is not changed, acquiring a historical electric quantity threshold calculated by the standby power, the standby duration, the voltage value, the rated capacity and the serial/parallel number of the battery modules at the last time; and taking the historical electric quantity threshold as the target state of charge threshold.
Further, setting the state of the energy storage system to a target state in accordance with the target state of charge threshold comprises: acquiring a current electric quantity value of the energy storage system, and determining the current state of charge of the energy storage system according to the current electric quantity value; judging whether the current state of charge is smaller than the target state of charge threshold value; if the current electric quantity value is smaller than the target state-of-charge threshold value, setting the state of the energy storage system to be the charging state; and if the current electric quantity value is greater than or equal to the target state of charge threshold, setting the state of the energy storage system to be the standby state.
Further, after setting the energy storage system to the state of charge, the method further comprises: sending a power supplementing request to the inverter; and supplementing the electric quantity of the energy storage system through the inverter until the state of charge of the energy storage system is greater than or equal to the target state of charge threshold.
Further, after the charge of the energy storage system is greater than or equal to the target state of charge threshold, the method further comprises: sending a power supplement stopping request to the inverter; and stopping supplementing the electric quantity to the energy storage system through the inverter, and setting the state of the energy storage system to be the standby state.
In order to achieve the above object, according to another aspect of the present application, there is provided a processing device of an energy storage system. The device includes: the first acquisition unit is used for acquiring the standby power of the inverter and the standby duration of the inverter, and acquiring the voltage value of a single battery module and the rated capacity of the single battery module; the second obtaining unit is used for obtaining the serial/parallel number of the battery modules in the energy storage system if the serial/parallel number of the battery modules in the energy storage system changes; the calculation unit is used for calculating according to the standby power, the standby duration, the voltage value of the single battery module, the rated capacity and the serial/parallel connection number of the battery modules to obtain a target state of charge threshold; a first setting unit, configured to set a state of the energy storage system to a target state according to the target state of charge threshold, where the target state is one of: charging state, standby state.
Further, the apparatus further comprises: the first determining unit is used for determining the connection mode of the battery modules in the energy storage system before acquiring the current serial/parallel number of the battery modules in the energy storage system if the serial/parallel number of the battery modules in the energy storage system changes, wherein the connection mode is one of the following modes: the serial connection and the parallel connection are carried out; the acquisition unit is used for acquiring the total voltage value of the plurality of battery modules in the energy storage system if the battery modules in the energy storage system are connected in series; and the first detection unit is used for detecting whether the serial/parallel connection quantity of the battery modules changes or not according to the total voltage values of the plurality of battery modules and the voltage value of the single battery module.
Further, the apparatus further comprises: the traversing unit is used for traversing the communication address of each battery module and the serial number of each battery module in the energy storage system if the battery modules in the energy storage system are connected in parallel; and the second detection unit is used for detecting whether the serial/parallel number of the battery modules changes or not according to the communication address of each battery module and the serial number of each battery module.
Further, the apparatus further comprises: the third obtaining unit is used for obtaining a historical electric quantity threshold value obtained by calculating the standby power, the standby duration, the voltage value, the rated capacity and the serial/parallel number of the battery modules at the last time if the serial/parallel number of the battery modules is not changed; and the second determination unit is used for taking the historical electric quantity threshold as the target state of charge threshold.
Further, the first setting unit includes: the acquisition module is further used for acquiring the current electric quantity value of the energy storage system and determining the current state of charge of the energy storage system according to the current electric quantity value; the judging module is used for judging whether the current charge state is smaller than the target charge state threshold value or not; the first setting module is used for setting the state of the energy storage system to be the charging state if the current electric quantity value is smaller than the target state of charge threshold value; and the second setting module is used for setting the state of the energy storage system to be the standby state if the current electric quantity value is greater than or equal to the target state of charge threshold.
Further, the apparatus further comprises: the first sending unit is used for sending a power supplementing request to the inverter after the energy storage system is set to be in the charging state; and the supplement unit is used for supplementing the electric quantity of the energy storage system through the inverter until the state of charge of the energy storage system is greater than or equal to the target state of charge threshold.
Further, after the electric quantity of the energy storage system is greater than or equal to the target state of charge threshold, the apparatus further includes: the second sending unit is used for sending a power supplementing stopping request to the inverter; and the second setting unit is used for stopping supplementing the electric quantity to the energy storage system through the inverter and setting the state of the energy storage system to be the standby state.
To achieve the above object, according to one aspect of the present application, there is provided a processor for executing a program, where the program executes to perform the processing method of the energy storage system described in any one of the above.
To achieve the above object, according to one aspect of the present application, there is provided an electronic device including one or more processors and a memory, the memory storing processing methods for implementing the energy storage system according to any one of the above.
By the application, the following steps are adopted: the method comprises the steps of obtaining the standby power and the standby duration of an inverter, and obtaining the voltage value of a single battery module and the rated capacity of the single battery module; if the number of the battery modules connected in series/in parallel in the energy storage system changes, acquiring the number of the battery modules connected in series/in parallel in the current energy storage system; calculating according to the standby power, the standby time, the voltage value and the rated capacity of a single battery module and the serial/parallel number of the battery modules to obtain a target charge state threshold value; setting the state of the energy storage system to a target state according to a target state of charge threshold, wherein the target state is one of: the charging state and the standby state solve the problem that in the related art, the electric quantity threshold value of the energy storage system is set through manual experience, and the electric quantity is different from the actual required electric quantity, so that electric quantity resources are wasted. The standby target charge state threshold of the inverter is automatically adjusted according to the change of the serial/parallel number of the battery modules in the energy storage system, so that the electric supply compensation is reduced to the maximum extent, the unnecessary electric quantity consumption is reduced, and the effects of saving electric quantity and reducing resource waste are achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
fig. 1 is a flow chart of a processing method of an energy storage system according to an embodiment of the present application;
FIG. 2 is a flow chart of an alternative energy storage system processing method provided in accordance with an embodiment of the present application;
FIG. 3 is a schematic diagram of a processing device of an energy storage system provided in accordance with an embodiment of the present application;
fig. 4 is a schematic diagram of an electronic device provided according to an embodiment of the application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
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 obtained by a person of ordinary skill in the art based on the embodiments in the present application 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 should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, 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.
In the prior art, the electric quantity threshold of the energy storage system is often set based on past experience, and when the number of the battery modules in the energy storage system is different, the reserved electric quantity threshold is the same, when the number of the battery modules in the battery module string/parallel is small, the capacity corresponding to the reserved electric quantity threshold meets the standby requirement, when the number of the battery modules in the battery module string/parallel is large, the reserved capacity under the condition of the same electric quantity threshold is larger than the capacity of the standby requirement, and the redundant capacity is unnecessary but is obtained from the commercial power supply supplement, so that unnecessary commercial power quantity loss is caused. Therefore, based on the above technical background, an energy storage system of an energy storage system is provided.
The present invention is described below with reference to preferred implementation steps, and fig. 1 is a flowchart of a processing method of an energy storage system according to an embodiment of the present application, and as shown in fig. 1, the method includes the following steps:
step S101, obtaining the standby power and the standby duration of an inverter, and obtaining the voltage value of a single battery module and the rated capacity of the single battery module;
step S102, if the serial/parallel number of the battery modules in the energy storage system changes, acquiring the serial/parallel number of the battery modules in the current energy storage system;
step S103, calculating according to the standby power, the standby time, the voltage value and the rated capacity of a single battery module and the serial/parallel number of the battery modules to obtain a target state of charge threshold;
step S104, setting the state of the energy storage system as a target state according to a target state-of-charge threshold, wherein the target state is one of the following states: charging state, standby state.
Specifically, the energy storage system consists of a battery system and a PCS inverter, wherein the standby power consumption of the PCS inverter is a fixed value P0, and the unit is W; for example, when the voltage between the positive and negative electrodes of the power port is U and the current flowing through the power port is I in the standby state, P0= U × I; the battery system includes a plurality of battery modules and a BMS battery management system. When the number of the series/parallel connection of the battery modules of the energy storage system is small, the output voltage of the battery system is low, and the current I is large; when the number of the series/parallel connection of the battery modules of the energy storage system is large, the output voltage of the battery system is high, and the current I is small. The magnitude of the current I determines the required reserve charge threshold of the battery system for a fixed time period T. Through the analysis, the serial/parallel number of the battery modules directly influences the reserved electric quantity threshold of the energy storage system. Therefore, the reserved capacity threshold needs to be calculated in a manner that fully considers the change of the serial/parallel connection number of the pool module.
Firstly, the standby power P and the standby time T of the inverter are obtained, and the voltage value U of a single battery module and the rated capacity C0 of the single battery module are obtained. Detecting whether the serial/parallel number of the battery modules in the energy storage system changes or not, and if the serial/parallel number of the battery modules in the energy storage system changes, determining the current serial/parallel number n of the battery modules in the energy storage system.
Next, a standby minimum SOC threshold SOCt (i.e., the above-described target state of charge threshold) is calculated from P, T, U, C, n. The standby power consumption of the PCS inverter is a fixed value P0 (which does not change along with the voltage of a power input port of the inverter), when the PCS inverter cannot provide electric quantity input at Photovoltaic (PV) and needs to go through a standby period with the time length T, the PCS inverter judges whether the electric quantity of a battery can support the standby time length T according to the SOC state of the existing battery, if the electric quantity of the battery cannot support the standby time length T, the PCS inverter starts AC commercial power to supplement the electric quantity of the energy storage battery until the electric quantity of the battery can support the SOCt of the standby time length T;
assuming that the existing capacity of a single battery module is C (Ah), the rated capacity of the battery module is C0, and the voltage of the battery module is U, when n battery modules are connected in series in the energy storage system, C × U (n) = P × T needs to be satisfied; the SOC of the battery system at the moment meets the condition that C/C0 is more than or equal to SOCt; when the energy storage system is formed by connecting n battery modules in parallel, C (n) U = P T is required to be satisfied; at the moment, the SOC of the battery system should meet the condition that C/C0 is more than or equal to SOCt; from C × n × U = P × T, it is known that C = (P × T)/((n) × U), and then (P × T)/((n) × U × C0) gtqsoct, and thus the minimum value of the SOCt threshold value is (P × T)/((n) × U C0), where P, T, U, C, n are known quantities. Thus. The target state of charge threshold can be obtained by calculation according to the standby power, the standby time, the voltage value and the rated capacity of a single battery module and the serial/parallel number of the battery modules.
And finally, setting the state of the energy storage system to be a charging state or a standby state according to the target state of charge threshold. That is, if the current electric quantity of the energy storage system is smaller than the target state of charge threshold, it indicates that the battery electric quantity cannot support the standby time T, and power supplement needs to be performed, that is, the state of the energy storage system is set to be a charging state. If the current electric quantity of the energy storage system is larger than or equal to the target state of charge threshold, the standby time T can be supported by the electric quantity of the battery, and electricity supplement is not needed, namely, the state of the energy storage system is set to be the standby state.
In order to accurately detect whether the number of the battery modules connected in series/in parallel in the energy storage system changes, in the processing method of the energy storage system provided in the embodiment of the present application, before acquiring the number of the battery modules connected in series/in parallel in the current energy storage system, the method further includes: determining a connection mode of a battery module in the energy storage system, wherein the connection mode is one of the following modes: the serial connection and the parallel connection are carried out; if the battery modules in the energy storage system are connected in series, collecting the total voltage value of the plurality of battery modules in the energy storage system; and detecting whether the serial/parallel connection quantity of the battery modules changes or not according to the total voltage value of the plurality of battery modules and the voltage value of the single battery module.
If the connection mode of the battery modules in the energy storage system is parallel connection, traversing the communication address of each battery module and the serial number of each battery module in the energy storage system; and detecting whether the serial/parallel number of the battery modules changes or not according to the communication address of each battery module and the serial number of each battery module.
Specifically, the connection mode of the battery modules in the current energy storage system is determined, namely, the battery modules are connected in series or in parallel, and if the battery modules are connected in series, the total voltage value of the plurality of battery modules of the current energy storage system is directly acquired. And then calculating the number of the current battery modules according to the voltage value of the single battery modules, and comparing the number of the current battery modules with the number of the battery modules in the last time to determine whether the number of the serial/parallel connection of the battery modules is changed.
If the battery modules are connected in parallel, whether the serial/parallel number of the battery modules changes can be determined by traversing the communication address of each battery module and the serial number of each battery module in the energy storage system.
When the energy storage system performs serial adjustment of the number of the battery modules or cuts out the fault of the parallel battery modules due to actual requirements, and the number of the battery modules in the energy storage system in serial/parallel connection changes, the energy storage system can automatically recognize the number of the battery modules in serial/parallel connection changes through the steps, automatically complete the estimation of the reserved electric quantity threshold value of the standby capacity of the inverter according to the formula, and send a power supplementing and strong charging instruction to the inverter when the current electric quantity of the energy storage system is smaller than the reserved electric quantity threshold value, so that the energy storage system uses the minimum AC commercial power to supplement the electric quantity to meet the standby requirement of the inverter under special working conditions, and further achieve the effect of reducing resource waste.
In the processing method of the energy storage system provided in the embodiment of the present application, the method further includes: if the serial/parallel number of the battery modules is not changed, acquiring a historical electric quantity threshold value calculated by the standby power, the standby time length, the voltage value, the rated capacity and the serial/parallel number of the battery modules at the last time; and taking the historical electric quantity threshold as a target state of charge threshold.
Specifically, if it is detected that the number of the battery modules connected in series/in parallel of the current energy storage system does not change, the historical electric quantity threshold calculated through the standby power, the standby duration, the voltage value, the rated capacity and the number of the battery modules connected in series/in parallel in the last time is directly obtained, and the historical electric quantity threshold is used as the target state of charge threshold.
In the processing method of the energy storage system provided in the embodiment of the present application, setting the state of the energy storage system to the target state according to the target state-of-charge threshold includes the following steps: acquiring a current electric quantity value of the energy storage system, and determining the current charge state of the energy storage system according to the current electric quantity value; judging whether the current state of charge is smaller than a target state of charge threshold value or not; if the current electric quantity value is smaller than the target charge state threshold value, setting the state of the energy storage system as a charge state; and if the current electric quantity value is greater than or equal to the target charge state threshold value, setting the state of the energy storage system to be a standby state.
After the energy storage system is set to be in a charging state, sending a power supplementing request to the inverter; and supplementing the electric quantity of the energy storage system through the inverter until the state of charge of the energy storage system is greater than or equal to the target state of charge threshold. After the electric quantity of the energy storage system is larger than or equal to the target state of charge threshold value, sending a power supplementing stopping request to the inverter; and stopping supplementing the electric quantity to the energy storage system through the inverter, and setting the state of the energy storage system to be a standby state.
Specifically, the current electric quantity value of the energy storage system can be obtained through a BMS battery management system in the energy storage system, the current state of charge of the energy storage system is determined according to the current electric quantity value, then the size relation between the current electric quantity value and a target state of charge threshold value is judged, if the current electric quantity value is smaller than the target state of charge threshold value, the energy storage system is set to be in a charging state, a power supplementing request is sent to an inverter, and the electric quantity of the energy storage system is supplemented through the inverter until the state of charge of the energy storage system is larger than or equal to the target state of charge threshold value. And if the current electric quantity value is larger than or equal to the target charge state threshold value, the direct energy storage system is set in a standby state without power supplement.
In an optional embodiment, the dynamic setting of the preset electric quantity threshold of the energy storage system can be realized through the flowchart shown in fig. 2, and the standby power P of the inverter and the standby duration T of the inverter are obtained through the BMS; acquiring a voltage value U and a rated capacity C0 of a single battery module through a BMS; detecting whether the number n of the series/parallel connection of the battery modules is changed or not; and if the change occurs, acquiring the current serial/parallel connection number n of the battery modules. Calculating a standby minimum SOC threshold value SOCt according to P, T, U, C and n through a BMS; if the number of series/parallel connection of the battery modules is not changed, the standby minimum SOC threshold value SOCt calculated last time is maintained. Judging whether the SOC of the current energy storage system is smaller than the SOCt or not, and if the SOC is smaller than the SOCt, sending a forced power supplement request to the PCS; the PCS charges the energy storage system; if the SOC of the energy storage system is calculated to be more than or equal to the SOCt, sending power supplement stop to the PCS; the inverter may enter a standby state.
In conclusion, the SOC minimum threshold corresponding to the standby reserved electric quantity of the inverter is automatically adjusted according to the change of the serial/parallel number of the battery modules in the energy storage system, the AC commercial power is reduced to the maximum extent, unnecessary AC commercial power consumption is reduced for customers, the customer experience is improved, customer complaints are avoided, and better economic benefits are brought for the customers.
According to the processing method of the energy storage system, the standby power and the standby duration of the inverter are obtained, and the voltage value of a single battery module and the rated capacity of the single battery module are obtained; if the number of the battery modules connected in series/in parallel in the energy storage system changes, acquiring the number of the battery modules connected in series/in parallel in the current energy storage system; calculating according to the standby power, the standby time, the voltage value and the rated capacity of a single battery module and the serial/parallel number of the battery modules to obtain a target charge state threshold value; setting the state of the energy storage system to a target state according to a target state of charge threshold, wherein the target state is one of: the charging state and the standby state solve the problem that the electric quantity resource is wasted due to the fact that the electric quantity threshold value of the energy storage system is set through manual experience and the difference exists between the electric quantity threshold value and the actual required electric quantity in the related technology. The standby target charge state threshold of the inverter is automatically adjusted according to the change of the serial/parallel number of the battery modules in the energy storage system, so that the electric supply compensation is reduced to the maximum extent, the unnecessary electric quantity consumption is reduced, and the effects of saving electric quantity and reducing resource waste are achieved.
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.
The embodiment of the present application further provides a processing device of an energy storage system, and it should be noted that the processing device of the energy storage system according to the embodiment of the present application may be used to execute the processing method for the energy storage system according to the embodiment of the present application. The following describes a processing apparatus of an energy storage system provided in an embodiment of the present application.
Fig. 3 is a schematic diagram of a processing device of an energy storage system according to an embodiment of the application. As shown in fig. 3, the apparatus includes: a first acquisition unit 301, a second acquisition unit 302, a calculation unit 303 and a first setting unit 304.
A first obtaining unit 301, configured to obtain a standby power of an inverter and a standby duration of the inverter, and obtain a voltage value of a single battery module and a rated capacity of the single battery module;
a second obtaining unit 302, configured to obtain the number of series/parallel battery modules in the current energy storage system if the number of series/parallel battery modules in the energy storage system changes;
the calculating unit 303 is configured to calculate according to the standby power, the standby duration, the voltage value of each battery module, the rated capacity, and the number of serial/parallel battery modules to obtain a target state of charge threshold;
a first setting unit 304, configured to set the state of the energy storage system to a target state according to a target state of charge threshold, where the target state is one of: charging state, standby state.
According to the processing device of the energy storage system provided by the embodiment of the application, the standby power and the standby duration of the inverter are obtained through the first obtaining unit 301, and the voltage value of a single battery module and the rated capacity of the single battery module are obtained; a second obtaining unit 302, configured to obtain the number of series/parallel battery modules in the current energy storage system if the number of series/parallel battery modules in the energy storage system changes; the calculating unit 303 is configured to calculate according to the standby power, the standby duration, the voltage value of each battery module, the rated capacity, and the number of serial/parallel battery modules to obtain a target state of charge threshold; the first setting unit 304 sets the state of the energy storage system to a target state according to a target state of charge threshold, wherein the target state is one of the following: the charging state and the standby state solve the problem that the electric quantity resource is wasted due to the fact that the electric quantity threshold value of the energy storage system is set through manual experience and the difference exists between the electric quantity threshold value and the actual required electric quantity in the related technology. The standby target charge state threshold of the inverter is automatically adjusted according to the change of the serial/parallel number of the battery modules in the energy storage system, so that the electric supply compensation is reduced to the maximum extent, the unnecessary electric quantity consumption is reduced, and the effects of saving electric quantity and reducing resource waste are achieved.
Optionally, in the processing apparatus of the energy storage system provided in the embodiment of the present application, the apparatus further includes: the first determining unit is used for determining the connection mode of the battery modules in the energy storage system before acquiring the serial/parallel number of the battery modules in the current energy storage system if the serial/parallel number of the battery modules in the energy storage system changes, wherein the connection mode is one of the following modes: the serial connection and the parallel connection are carried out; the acquisition unit is used for acquiring the total voltage value of the plurality of battery modules in the energy storage system if the battery modules in the energy storage system are connected in series; the first detection unit is used for detecting whether the serial/parallel connection quantity of the battery modules changes or not according to the total voltage value of the plurality of battery modules and the voltage value of the single battery module.
Optionally, in the processing apparatus of the energy storage system provided in the embodiment of the present application, the apparatus further includes: the traversing unit is used for traversing the communication address of each battery module and the serial number of each battery module in the energy storage system if the battery modules in the energy storage system are connected in parallel; and the second detection unit is used for detecting whether the serial/parallel number of the battery modules changes or not according to the communication address of each battery module and the serial number of each battery module.
Optionally, in the processing apparatus of the energy storage system provided in the embodiment of the present application, the apparatus further includes: the third acquisition unit is used for acquiring a historical electric quantity threshold value obtained by calculation of the standby power, the standby duration, the voltage value, the rated capacity and the serial/parallel number of the battery modules at the last time if the serial/parallel number of the battery modules is not changed; and the second determination unit is used for taking the historical electric quantity threshold as a target state of charge threshold.
Optionally, in the processing apparatus of the energy storage system provided in the embodiment of the present application, the first setting unit includes: the acquisition module is also used for acquiring the current electric quantity value of the energy storage system and determining the current charge state of the energy storage system according to the current electric quantity value; the judging module is used for judging whether the current charge state is smaller than a target charge state threshold value or not; the first setting module is used for setting the state of the energy storage system to be a charging state if the current electric quantity value is smaller than a target charge state threshold value; and the second setting module is used for setting the state of the energy storage system to be a standby state if the current electric quantity value is greater than or equal to the target charge state threshold value.
Optionally, in the processing apparatus of the energy storage system provided in the embodiment of the present application, the apparatus further includes: the first sending unit is used for sending a power supplementing request to the inverter after the energy storage system is set to be in a charging state; and the supplement unit is used for supplementing the electric quantity of the energy storage system through the inverter until the state of charge of the energy storage system is greater than or equal to the target state of charge threshold.
Optionally, in the processing apparatus of the energy storage system provided in the embodiment of the present application, after the electric quantity of the energy storage system is greater than or equal to the target state of charge threshold, the apparatus further includes: the second sending unit is used for sending a power supplementing stopping request to the inverter; and the second setting unit is used for stopping supplementing the electric quantity to the energy storage system through the inverter and setting the state of the energy storage system to be a standby state.
The processing device of the energy storage system comprises a processor and a memory, wherein the first acquiring unit 301, the second acquiring unit 302, the calculating unit 303, the first setting unit 304 and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to one or more than one, and the setting of the electric quantity threshold of the energy storage system is realized by adjusting the kernel parameters.
The memory may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), including at least one memory chip.
The embodiment of the invention provides a processor, which is used for running a program, wherein a processing method of an energy storage system is executed when the program runs.
As shown in fig. 4, an embodiment of the present invention provides an electronic device, where the device includes a processor, a memory, and a program stored in the memory and executable on the processor, and the processor executes the program to implement the following steps: the method comprises the steps of obtaining the standby power and the standby duration of an inverter, and obtaining the voltage value of a single battery module and the rated capacity of the single battery module; if the number of the battery modules connected in series/in parallel in the energy storage system changes, acquiring the number of the battery modules connected in series/in parallel in the current energy storage system; calculating according to the standby power, the standby time, the voltage value and the rated capacity of a single battery module and the serial/parallel number of the battery modules to obtain a target charge state threshold value; setting the state of the energy storage system to a target state according to a target state of charge threshold, wherein the target state is one of: charging state, standby state.
Optionally, before acquiring the number of series/parallel connection of the battery modules in the current energy storage system if the number of series/parallel connection of the battery modules in the energy storage system changes, the method further includes: determining a connection mode of a battery module in the energy storage system, wherein the connection mode is one of the following modes: the serial connection and the parallel connection are carried out; if the battery modules in the energy storage system are connected in series, collecting the total voltage value of the plurality of battery modules in the energy storage system; and detecting whether the serial/parallel connection quantity of the battery modules changes or not according to the total voltage value of the plurality of battery modules and the voltage value of the single battery module.
Optionally, if the battery modules in the energy storage system are connected in parallel, the method further includes: traversing the communication address of each battery module and the number of each battery module in the energy storage system; and detecting whether the serial/parallel number of the battery modules is changed or not according to the communication address of each battery module and the serial number of each battery module.
Optionally, the method further comprises: if the serial/parallel number of the battery modules is not changed, acquiring a historical electric quantity threshold value calculated by the standby power, the standby time length, the voltage value, the rated capacity and the serial/parallel number of the battery modules at the last time; and taking the historical electric quantity threshold as a target state of charge threshold.
Optionally, setting the state of the energy storage system to the target state according to the target state of charge threshold comprises: acquiring a current electric quantity value of the energy storage system, and determining the current charge state of the energy storage system according to the current electric quantity value; judging whether the current state of charge is smaller than a target state of charge threshold value or not; if the current electric quantity value is smaller than the target charge state threshold value, setting the state of the energy storage system as a charge state; and if the current electric quantity value is greater than or equal to the target charge state threshold value, setting the state of the energy storage system to be a standby state.
Optionally, after setting the energy storage system to the charging state, the method further comprises: sending a power supplementing request to the inverter; and supplementing the electric quantity of the energy storage system through the inverter until the state of charge of the energy storage system is greater than or equal to the target state of charge threshold.
Optionally, after the charge of the energy storage system is greater than or equal to the target state of charge threshold, the method further includes: sending a power supplement stopping request to the inverter; and stopping supplementing the electric quantity to the energy storage system through the inverter, and setting the state of the energy storage system to be a standby state.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: the method comprises the steps of obtaining the standby power and the standby duration of an inverter, and obtaining the voltage value of a single battery module and the rated capacity of the single battery module; if the number of the battery modules connected in series/in parallel in the energy storage system changes, acquiring the number of the battery modules connected in series/in parallel in the current energy storage system; calculating according to the standby power, the standby time, the voltage value and the rated capacity of a single battery module and the serial/parallel number of the battery modules to obtain a target charge state threshold value; setting the state of the energy storage system to a target state according to a target state of charge threshold, wherein the target state is one of: charging state, standby state.
Optionally, before acquiring the number of series/parallel connection of the battery modules in the current energy storage system if the number of series/parallel connection of the battery modules in the energy storage system changes, the method further includes: determining a connection mode of a battery module in the energy storage system, wherein the connection mode is one of the following modes: the serial connection and the parallel connection are carried out; if the battery modules in the energy storage system are connected in series, collecting the total voltage value of the plurality of battery modules in the energy storage system; and detecting whether the number of the series/parallel connection of the battery modules is changed or not according to the total voltage value of the plurality of battery modules and the voltage value of the single battery module.
Optionally, if the battery modules in the energy storage system are connected in parallel, the method further includes: traversing the communication address of each battery module and the number of each battery module in the energy storage system; and detecting whether the serial/parallel number of the battery modules changes or not according to the communication address of each battery module and the serial number of each battery module.
Optionally, the method further comprises: if the serial/parallel number of the battery modules is not changed, acquiring a historical electric quantity threshold value calculated by the standby power, the standby time length, the voltage value, the rated capacity and the serial/parallel number of the battery modules at the last time; and taking the historical electric quantity threshold as a target state of charge threshold.
Optionally, setting the state of the energy storage system to the target state according to the target state of charge threshold comprises: acquiring a current electric quantity value of the energy storage system, and determining the current charge state of the energy storage system according to the current electric quantity value; judging whether the current state of charge is smaller than a target state of charge threshold value or not; if the current electric quantity value is smaller than the target charge state threshold value, setting the state of the energy storage system as a charge state; and if the current electric quantity value is greater than or equal to the target charge state threshold value, setting the state of the energy storage system to be a standby state.
Optionally, after setting the energy storage system to the charging state, the method further comprises: sending a power supplementing request to the inverter; and supplementing the electric quantity of the energy storage system through the inverter until the state of charge of the energy storage system is greater than or equal to the target state of charge threshold.
Optionally, after the charge of the energy storage system is greater than or equal to the target state of charge threshold, the method further includes: sending a power supplementing stopping request to the inverter; and stopping supplementing the electric quantity to the energy storage system through the inverter, and setting the state of the energy storage system to be a standby state.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both permanent and non-permanent, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for handling an energy storage system, the energy storage system comprising at least: inverter and a plurality of battery module, include:
the method comprises the steps of obtaining standby power of an inverter and standby duration of the inverter, and obtaining a voltage value of a single battery module and rated capacity of the single battery module;
if the number of the battery modules connected in series/in parallel in the energy storage system changes, acquiring the number of the battery modules connected in series/in parallel in the energy storage system at present;
calculating according to the standby power, the standby duration, the voltage value of the single battery module, the rated capacity and the serial/parallel number of the battery modules to obtain a target state of charge threshold;
setting the state of the energy storage system to a target state according to the target state of charge threshold, wherein the target state is one of: charging state, standby state.
2. The method according to claim 1, wherein before acquiring the current number of series/parallel connection of battery modules in the energy storage system if the number of series/parallel connection of battery modules in the energy storage system changes, the method further comprises:
determining a connection mode of a battery module in the energy storage system, wherein the connection mode is one of the following modes: the serial connection and the parallel connection are carried out;
if the battery modules in the energy storage system are connected in series, collecting the total voltage value of the plurality of battery modules in the energy storage system;
and detecting whether the serial/parallel connection quantity of the battery modules changes or not according to the total voltage values of the plurality of battery modules and the voltage value of the single battery module.
3. The method of claim 2, wherein if the battery modules in the energy storage system are connected in parallel, the method further comprises:
traversing the communication address of each battery module and the number of each battery module in the energy storage system;
and detecting whether the serial/parallel number of the battery modules changes or not according to the communication address of each battery module and the serial number of each battery module.
4. The method of claim 1, further comprising:
if the serial/parallel number of the battery modules is not changed, acquiring a historical electric quantity threshold calculated by the standby power, the standby duration, the voltage value, the rated capacity and the serial/parallel number of the battery modules at the last time;
and taking the historical electric quantity threshold as the target state of charge threshold.
5. The method of claim 1, wherein setting the state of the energy storage system to a target state as a function of the target state of charge threshold comprises:
acquiring a current electric quantity value of the energy storage system, and determining the current state of charge of the energy storage system according to the current electric quantity value;
judging whether the current state of charge is smaller than the target state of charge threshold value;
if the current electric quantity value is smaller than the target state-of-charge threshold value, setting the state of the energy storage system to be the charging state;
and if the current electric quantity value is greater than or equal to the target state of charge threshold, setting the state of the energy storage system to be the standby state.
6. The method of claim 4, wherein after setting the energy storage system to the state of charge, the method further comprises:
sending a power supplementing request to the inverter;
and supplementing the electric quantity of the energy storage system through the inverter until the state of charge of the energy storage system is greater than or equal to the target state of charge threshold.
7. The method of claim 5, wherein after the charge of the energy storage system is greater than or equal to the target state of charge threshold, the method further comprises:
sending a power supplement stopping request to the inverter;
and stopping supplementing the electric quantity to the energy storage system through the inverter, and setting the state of the energy storage system to be the standby state.
8. A processing device of an energy storage system, characterized in that the energy storage system comprises at least: inverter and a plurality of battery module, include:
the first acquisition unit is used for acquiring the standby power of the inverter and the standby duration of the inverter, and acquiring the voltage value of a single battery module and the rated capacity of the single battery module;
the second obtaining unit is used for obtaining the serial/parallel number of the battery modules in the energy storage system if the serial/parallel number of the battery modules in the energy storage system changes;
the calculating unit is used for calculating according to the standby power, the standby duration, the voltage value of the single battery module, the rated capacity and the serial/parallel number of the battery modules to obtain a target state of charge threshold;
a first setting unit, configured to set a state of the energy storage system to a target state according to the target state of charge threshold, where the target state is one of: charging state, standby state.
9. A processor, characterized in that the processor is configured to execute a program, wherein the program executes the processing method of the energy storage system according to any one of claims 1 to 7.
10. An electronic device comprising one or more processors and memory for storing one or more programs, wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the processing method of the energy storage system of any one of claims 1 to 7.
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