Intelligent control method, system and storage medium for charging and discharging of energy storage battery

Abstract

The present invention provides an intelligent control method, system and storage medium for charging and discharging an energy storage battery. First, first voltage information and second voltage information are detected. When the first voltage information or the second voltage information exceeds a preset first voltage threshold, a battery monitoring mode is entered; then, after entering the battery monitoring mode, whether it is in a power-on state is determined according to first working state information, and if so, third voltage information is obtained; if not, whether the battery is in a locked state is determined according to first shutdown coding information, and if so, first communication information is sent; if not, third voltage information is obtained; finally, the charging and discharging working state of the battery is set according to the first voltage information, the second voltage information and the third voltage information; the functions of automatically replenishing power when power is low and automatically starting up and activating are realized, thereby reducing manual operation costs and improving user experience.

Description

Technical Field

[0001] The present invention relates to the field of energy storage batteries, and more specifically, to an intelligent control method, system and storage medium for charging and discharging an energy storage battery. Background Art

[0002] With the rapid development of photovoltaic energy storage technology, energy storage technology has been widely used, such as household energy storage, portable energy storage, industrial and commercial energy storage, etc. The entire system has power modules and battery modules.

[0003] In traditional energy storage systems, the energy storage inverter and battery modules are independent of each other and simply coupled. The two modules perform simple charging and discharging through simple communication logic. However, this simple interaction logic cannot make the system more closely integrated and cannot solve sudden problems in a timely manner.

[0004] After the battery module leaves the factory, it will consume power or over-discharge. When it runs out of power, it will protect itself and cannot be turned on. It needs to use special charging equipment for manual charging. It is even possible that after the system is installed, the battery runs out of power and cannot be turned on normally. Since the energy storage inverter does not recharge the battery, the system needs to be disassembled and recharged manually again. Being in an over-discharge state for a long time will cause damage or even damage to the battery module, reducing the service life of the battery module. In addition, after the energy storage system is installed, the battery module needs to be manually turned on and activated. Even if the energy storage system is abnormally self-protected, it will force the system to be turned on and activated without knowing it, which will cause secondary damage to the system module and threaten people's safety. Therefore, there is an urgent need for an intelligent control technology for charging and discharging energy storage batteries that can realize automatic power replenishment and automatic startup and activation of battery modules. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide an intelligent control method, system and storage medium for charging and discharging of energy storage batteries, which can closely connect the energy storage battery module and the energy storage inverter module in the energy storage system, control the charging and discharging status of the storage module, and realize functions such as automatic power replenishment and automatic power-on activation; in addition, data interaction is carried out through remote communication to realize remote monitoring and control functions; reduce manual operation costs and improve user experience.

[0006] The first aspect of the present invention provides an intelligent control method for charging and discharging an energy storage battery, comprising:

[0007] Acquire first voltage information and second voltage information;

[0008] Determining whether the first voltage information or the second voltage information exceeds a preset first voltage threshold;

[0009] If yes, it enters the battery monitoring mode;

[0010] Acquiring first working status information;

[0011] Determining whether the first working state information is a power-on state;

[0012] If yes, obtaining third voltage information;

[0013] If not, obtaining the first shutdown code information;

[0014] Determining whether the first shutdown code information is a preset shutdown code;

[0015] If yes, the battery is locked and the first communication information is sent;

[0016] If not, obtaining third voltage information;

[0017] The charge and discharge working state of the battery is set according to the first voltage information, the second voltage information and the third voltage information.

[0018] In this solution, the battery lock state is entered and the first notification information is sent, specifically:

[0019] Get battery status information;

[0020] Obtaining second shutdown code information according to the battery status information and the first shutdown code information;

[0021] Generate first communication information according to the second shutdown code information;

[0022] Disconnect the battery input port and close the battery output relay.

[0023] In this solution, the charging and discharging working state of the battery is set according to the first voltage information, the second voltage information and the third voltage information, specifically:

[0024] Determining whether the first voltage information exceeds a preset first voltage threshold;

[0025] If yes, the first power supply voltage is a photovoltaic power supply voltage;

[0026] If not, the first supply voltage is the grid supply voltage;

[0027] Acquiring third voltage information in sequence according to a preset order;

[0028] Determining whether the third voltage information is lower than a preset second voltage threshold;

[0029] If so, the input port of the corresponding battery module is connected to charge the battery module through the first supply voltage.

[0030] This plan also includes:

[0031] Acquiring third voltage information in sequence according to a preset order;

[0032] Determining whether the third voltage information exceeds a preset third voltage threshold;

[0033] If yes, obtain the first cycle charging times information;

[0034] Sorting the first charging cycle number information in ascending order;

[0035] According to the sorting results, the output relays of the battery modules are turned on in sequence.

[0036] This plan also includes:

[0037] A display unit, which is a display screen, a digital tube or an indicator light;

[0038] According to the second shutdown code information, corresponding instruction information is displayed.

[0039] This plan also includes:

[0040] Acquiring first remote communication instruction information;

[0041] Acquire first operation code information according to first remote communication instruction information;

[0042] If the first operation code information is a power-on operation, the auxiliary source power supply is turned on and the battery output relay is turned on;

[0043] If the first operation code information is a standby operation, turning on the auxiliary source power supply and turning off the battery output relay;

[0044] If the first operation code information is a shutdown operation, the auxiliary source power supply is disconnected and the battery output relay is closed.

[0045] A second aspect of the present invention provides an intelligent control system for charging and discharging an energy storage battery, including an intelligent control method program for charging and discharging an energy storage battery. When the intelligent control method program for charging and discharging an energy storage battery is executed by the processor, the following steps are implemented:

[0046] Acquire first voltage information and second voltage information;

[0047] Determining whether the first voltage information or the second voltage information exceeds a preset first voltage threshold;

[0048] If yes, it enters the battery monitoring mode;

[0049] Acquiring first working status information;

[0050] Determining whether the first working state information is a power-on state;

[0051] If yes, obtaining third voltage information;

[0052] If not, obtaining the first shutdown code information;

[0053] Determining whether the first shutdown code information is a preset shutdown code;

[0054] If yes, the battery is locked and the first communication information is sent;

[0055] If not, obtaining third voltage information;

[0056] The charge and discharge working state of the battery is set according to the first voltage information, the second voltage information and the third voltage information.

[0057] In this solution, the battery lock state is entered and the first notification information is sent, specifically:

[0058] Get battery status information;

[0059] Obtaining second shutdown code information according to the battery status information and the first shutdown code information;

[0060] Generate first communication information according to the second shutdown code information;

[0061] Disconnect the battery input port and close the battery output relay.

[0062] In this solution, the charging and discharging working state of the battery is set according to the first voltage information, the second voltage information and the third voltage information, specifically:

[0063] Determining whether the first voltage information exceeds a preset first voltage threshold;

[0064] If yes, the first power supply voltage is a photovoltaic power supply voltage;

[0065] If not, the first supply voltage is the grid supply voltage;

[0066] Acquiring third voltage information in sequence according to a preset order;

[0067] Determining whether the third voltage information is lower than a preset second voltage threshold;

[0068] If so, the input port of the corresponding battery module is connected to charge the battery module through the first supply voltage.

[0069] A third aspect of the present invention provides a computer-readable storage medium, which includes a program for an intelligent control method for charging and discharging an energy storage battery. When the program for the intelligent control method for charging and discharging an energy storage battery is executed by a processor, the steps of the intelligent control method for charging and discharging an energy storage battery as described in any one of the above items are implemented.

[0070] The present invention provides an intelligent control method, system and storage medium for charging and discharging an energy storage battery. First, first voltage information and second voltage information are detected. When the first voltage information or the second voltage information exceeds a preset first voltage threshold, a battery monitoring mode is entered; then, after entering the battery monitoring mode, whether it is in a power-on state is determined according to first working state information, and if so, third voltage information is obtained; if not, whether the battery is in a locked state is determined according to first shutdown coding information, and if so, first communication information is sent; if not, third voltage information is obtained; finally, the charging and discharging working state of the battery is set according to the first voltage information, the second voltage information and the third voltage information; the functions of automatically replenishing power when power is low and automatically starting up and activating are realized, thereby reducing manual operation costs and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope.

[0072] Figure 1 A flow chart showing an intelligent control method for charging and discharging an energy storage battery according to the present invention is shown;

[0073] Figure 2 The flowchart of the battery lock state provided by the present invention is shown;

[0074] Figure 3 A flowchart of a battery charging and discharging process provided by an embodiment of the present invention is shown;

[0075] Figure 4 A block diagram of an intelligent control system for charging and discharging an energy storage battery according to the present invention is shown. DETAILED DESCRIPTION

[0076] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0077] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present invention have the same meanings as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless the embodiments of the present invention are explicitly defined in this way.

[0078] The words "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one", "an" or "the" and similar words do not indicate a quantity limitation, but indicate the existence of at least one. Similarly, words such as "include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The steps before or after the method of the embodiment of the present invention are not necessarily carried out in order. On the contrary, various steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or a step or several steps can be removed from these processes.

[0079] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0080] Figure 1 A flow chart of an intelligent control method for charging and discharging an energy storage battery according to the present invention is shown.

[0081] like Figure 1 As shown, the present invention discloses an intelligent control method for charging and discharging an energy storage battery, the method comprising:

[0082] S102, obtaining first voltage information and second voltage information;

[0083] S104, determining whether the first voltage information or the second voltage information exceeds a preset first voltage threshold;

[0084] S106, if yes, enter battery monitoring mode;

[0085] S108, obtaining first working status information;

[0086] S110, determining whether the first working state information is a power-on state;

[0087] S112, if yes, obtaining third voltage information;

[0088] S114, if not, obtaining first shutdown code information;

[0089] S116, determining whether the first shutdown code information is a preset shutdown code;

[0090] S118: If yes, enter the battery lock state and send the first communication information;

[0091] S112, if not, obtaining third voltage information;

[0092] S120: Setting a charge and discharge working state of a battery according to the first voltage information, the second voltage information, and the third voltage information.

[0093] It should be noted that the first voltage information is the input voltage of the solar photovoltaic source; the second voltage information is the input voltage of the AC source, including AC inputs such as power grids and diesel generators; the first working state information is the working state of the energy storage battery module, including the power-on state and the power-off state; the third voltage information is the output voltage of the energy storage battery module; the first shutdown code information is the code of the reason why the energy storage battery module enters the shutdown state. First, measure the voltage value of the charging input source of the energy storage battery module, that is, the voltage value of the solar photovoltaic source and the AC source; when the voltage value of the solar photovoltaic source or the voltage value of the AC source exceeds the preset voltage threshold, it means that the charging input source voltage of the energy storage battery module meets the basic charging requirements, and the battery monitoring mode can be entered to realize automatic monitoring and control of the charging and discharging of the energy storage battery. Then, it is determined whether the energy storage battery module is in the on state according to the first working state information of the energy storage battery module; if so, it indicates that there is a certain amount of power in the energy storage battery module and it is in a charge-discharge working state; if not, it indicates that the energy storage battery module is exhausted or abnormal, then the first shutdown code information of the energy storage battery module is obtained, and it is determined whether the first shutdown code information is a preset shutdown code, if so, it indicates that the energy storage battery module is in an abnormal state, and there will be operational risks in performing the charge-discharge function, therefore, the battery lock state is entered, the charge-discharge operation of the energy storage battery is prohibited, and the first communication information is generated according to the first shutdown code information and sent to the background to prompt the relevant operators to maintain the energy storage battery module; if not, it indicates that there is no abnormality in the shutdown of the energy storage battery module, such as the lack of power or the exhaustion of power at the factory, and it is in a charge-discharge working state. Finally, when the energy storage battery module is in a charge and discharge working state, the charging input source for charging the energy storage battery module is selected according to the voltage values ​​of the solar photovoltaic source and the AC source; and the charge and discharge state of the energy storage battery module is set according to the third voltage information of the energy storage battery module.

[0094] Figure 2 The flowchart of the battery lock state provided by the present invention is shown.

[0095] According to an embodiment of the present invention, Figure 2 As shown, the battery lock state is entered and the first notification information is sent, specifically:

[0096] S202, obtaining battery status information;

[0097] S204, obtaining second shutdown code information according to the battery status information and the first shutdown code information;

[0098] S206, generating first communication information according to the second shutdown code information;

[0099] S208, disconnect the battery input port and close the battery output relay.

[0100] It should be noted that the battery status information is the state parameter of the energy storage battery, including SOC (state of charge), SOH (state of health), SOP (state of power) and SOF (state of function); respectively describing the battery power, life, power and functional state, and used to evaluate the performance of the battery. According to the battery status information, the cause of the battery abnormality is analyzed. If the analyzed cause of the battery abnormality is the same as the cause indicated by the first shutdown coding information, the second shutdown coding information is set according to the first shutdown coding information; if the analyzed cause of the battery abnormality is different from the cause indicated by the first shutdown coding information, the severity of the abnormal cause indicated by the two is compared, and the second shutdown coding information is set according to the higher severity; wherein, in actual application, the higher the code number, the higher the severity of the abnormality, the easier it is to cause damage or harm to the user or operator. Then, the first communication information is generated according to the second shutdown coding information to notify the background that the energy storage battery is in an abnormal state. Finally, the energy storage battery is locked by setting the input port of the energy storage battery to close the charging channel, and the output relay of the energy storage battery is closed to close the output channel.

[0101] Figure 3 A flowchart of a battery charging and discharging process provided by an embodiment of the present invention is shown.

[0102] According to an embodiment of the present invention, Figure 3 As shown, the charging and discharging working state of the battery is set according to the first voltage information, the second voltage information and the third voltage information, specifically:

[0103] S302, determining whether the first voltage information exceeds a preset first voltage threshold;

[0104] S304, if yes, the first power supply voltage is a photovoltaic power supply voltage;

[0105] S306, if not, the first supply voltage is the grid supply voltage;

[0106] S308, acquiring third voltage information in sequence according to a preset order;

[0107] S310, determining whether the third voltage information is lower than a preset second voltage threshold;

[0108] S312: If yes, connect the input port of the corresponding battery module to charge the battery module through the first supply voltage.

[0109] It should be noted that the first power supply voltage is the input power supply voltage during the charging process of the energy storage battery. First, it is determined whether the first voltage information exceeds the preset first voltage threshold. If so, it means that the voltage value of the solar photovoltaic source meets the charging requirements of the energy storage battery, and the solar photovoltaic source is set to the first power supply voltage; if not, it means that the voltage value of the solar photovoltaic source does not meet the charging requirements of the energy storage battery, and the AC source needs to be set to the first power supply voltage; that is, under the condition that the solar photovoltaic source meets the charging requirements, the solar photovoltaic source is preferably used as the charging power source to reduce the power loss of the AC source, that is, the power generated by the power grid and the diesel generator, thereby reducing the cost of power use and reducing environmental pollution. Since the energy storage battery module is composed of at least two battery modules stacked in parallel, there is an inconsistency in the power state of each battery module. Therefore, it is necessary to measure the voltage of each battery module in turn according to the preset order to obtain the third voltage information. When the third voltage information of the battery module is lower than the preset second voltage threshold, it means that the current battery module needs to be supplemented with power, and the battery module is charged by the first power supply voltage by connecting the input port of the corresponding battery module.

[0110] According to an embodiment of the present invention, it also includes:

[0111] Acquiring third voltage information in sequence according to a preset order;

[0112] Determining whether the third voltage information exceeds a preset third voltage threshold;

[0113] If yes, obtain the first cycle charging times information;

[0114] Sorting the first charging cycle number information in ascending order;

[0115] According to the sorting results, the output relays of the battery modules are turned on in sequence.

[0116] It should be noted that the first charge cycle number information is the number of times the battery completes a complete charge and discharge cycle, indicating the number of times the battery goes from fully charged to fully discharged, and is an important indicator for measuring battery life. When the third voltage information of the energy storage battery module exceeds the preset third voltage threshold, it means that the power of the energy storage battery is in a state where it can maintain discharge operation. At this time, the first charge cycle number information of each battery module is obtained in turn, and the first charge cycle number information of each battery module is sorted in ascending order. Finally, according to the ascending sorting result, the output relays of the battery modules are turned on in order from small to large according to the first charge cycle number information to realize the discharge function of the energy storage battery module.

[0117] According to an embodiment of the present invention, it also includes:

[0118] A display unit, which is a display screen, a digital tube or an indicator light;

[0119] According to the second shutdown code information, corresponding instruction information is displayed.

[0120] It should be noted that the energy storage battery module is provided with a display unit for displaying the working status of the energy storage battery module. When the energy storage battery module is in a normal working state, the display unit is in a standby state, and will enter the corresponding display state only after receiving an operation instruction. When the energy storage battery module is in an abnormal working state, the display unit displays corresponding indication information according to the second shutdown coding information to prompt the operator. As an embodiment, when the display unit uses indicator lights, the working status of the energy storage battery module can be indicated by the number and on and off status of the indicator lights; for example, the indicator light constant indicates normal operation; the indicator light flashes slowly, indicating an abnormal state; the indicator light flashes quickly, indicating another abnormal state. As another embodiment, when the display unit uses a display screen, the display screen can display the second shutdown coding information and the corresponding abnormal cause as indication information.

[0121] According to an embodiment of the present invention, it also includes:

[0122] Acquiring first remote communication instruction information;

[0123] Acquire first operation code information according to first remote communication instruction information;

[0124] If the first operation code information is a power-on operation, the auxiliary source power supply is turned on and the battery output relay is turned on;

[0125] If the first operation code information is a standby operation, turning on the auxiliary source power supply and turning off the battery output relay;

[0126] If the first operation code information is a shutdown operation, the auxiliary source power supply is disconnected and the battery output relay is closed.

[0127] It should be noted that the first remote communication instruction information is a remote communication instruction from the background; the first operation code information is the code of the operation instruction in the first remote communication instruction information, including but not limited to power-on operation, standby operation and power-off operation; the auxiliary source is the power supply of the energy storage battery module processor, which is usually a low voltage obtained by converting and reducing the voltage of a solar photovoltaic source or an AC source. If the first operation code information is a power-on operation, the auxiliary source is turned on to monitor and control the energy storage battery module, and the energy storage battery output relay is turned on for discharge output; if the first operation code information is a standby operation, the auxiliary source is turned on to monitor and control the energy storage battery module, and the energy storage battery output relay is turned off to stop the battery's power output; if the first operation code information is a power-off operation, the auxiliary source power supply is disconnected and the battery output relay is turned off to save energy.

[0128] It is worth mentioning that it also includes:

[0129] Determining first current threshold information according to the third voltage information;

[0130] Obtaining first starting current information according to the first current threshold information;

[0131] Charging current information is set according to the first starting current information and the first current threshold information.

[0132] It should be noted that the first current threshold information is the maximum charging current of the energy storage battery. According to the third voltage information of the energy storage battery module, the preset charging current correspondence table is searched to obtain the first current threshold information. In practical applications, as the voltage value of the energy storage battery is lower, it means that the power is lower, and the current set for charging is larger to achieve rapid energy replenishment. According to the first current threshold information, the initial current when charging the energy storage battery is determined, that is, the first starting current information. When charging starts, the charging current is gradually increased from the first starting current information to the first current threshold information to achieve low-power start-up charging, reduce damage to equipment or devices due to instantaneous surge current, and ensure product reliability.

[0133] It is worth mentioning that it also includes:

[0134] Acquiring first discharge cycle information;

[0135] Determining whether the first discharge cycle information exceeds a preset cycle threshold;

[0136] If yes, obtaining first charging cycle information;

[0137] Determining whether the first charging cycle information exceeds a preset charging cycle threshold;

[0138] If yes, charging is started.

[0139] It should be noted that the first discharge cycle information is the time from the last discharge of the current battery module; the first charge cycle information is the time from the last charge of the current battery module. When the first discharge cycle information exceeds the preset cycle threshold, it means that the battery module is in a state of long-term storage. Then, it is judged whether the first charge cycle information exceeds the preset charge cycle threshold. If so, it means that the module battery has been in a state of long-term storage without discharge and charging, and there is transportation or long-term storage, and the battery is in a state of over-discharge protection. At this time, the battery module is charged to extend the battery life.

[0140] Figure 4 A block diagram of an intelligent control system for charging and discharging an energy storage battery according to the present invention is shown.

[0141] like Figure 4 As shown, the present invention discloses an intelligent control system 4 for charging and discharging an energy storage battery, comprising a memory 41 and a processor 42, wherein the memory comprises an intelligent control method program for charging and discharging an energy storage battery, and when the intelligent control method program for charging and discharging an energy storage battery is executed by the processor, the following steps are implemented:

[0142] Acquire first voltage information and second voltage information;

[0143] Determining whether the first voltage information or the second voltage information exceeds a preset first voltage threshold;

[0144] If yes, it enters the battery monitoring mode;

[0145] Acquiring first working status information;

[0146] Determining whether the first working state information is a power-on state;

[0147] If yes, obtaining third voltage information;

[0148] If not, obtaining the first shutdown code information;

[0149] Determining whether the first shutdown code information is a preset shutdown code;

[0150] If yes, the battery is locked and the first communication information is sent;

[0151] If not, obtaining third voltage information;

[0152] The charge and discharge working state of the battery is set according to the first voltage information, the second voltage information and the third voltage information.

[0153] It should be noted that the first voltage information is the input voltage of the solar photovoltaic source; the second voltage information is the input voltage of the AC source, including AC inputs such as power grids and diesel generators; the first working state information is the working state of the energy storage battery module, including the power-on state and the power-off state; the third voltage information is the output voltage of the energy storage battery module; the first shutdown code information is the code of the reason why the energy storage battery module enters the shutdown state. First, measure the voltage value of the charging input source of the energy storage battery module, that is, the voltage value of the solar photovoltaic source and the AC source; when the voltage value of the solar photovoltaic source or the voltage value of the AC source exceeds the preset voltage threshold, it means that the charging input source voltage of the energy storage battery module meets the basic charging requirements, and the battery monitoring mode can be entered to realize automatic monitoring and control of the charging and discharging of the energy storage battery. Then, it is determined whether the energy storage battery module is in the on state according to the first working state information of the energy storage battery module; if so, it indicates that there is a certain amount of power in the energy storage battery module and it is in a charge-discharge working state; if not, it indicates that the energy storage battery module is exhausted or abnormal, then the first shutdown code information of the energy storage battery module is obtained, and it is determined whether the first shutdown code information is a preset shutdown code, if so, it indicates that the energy storage battery module is in an abnormal state, and there will be operational risks in performing the charge-discharge function, therefore, the battery lock state is entered, the charge-discharge operation of the energy storage battery is prohibited, and the first communication information is generated according to the first shutdown code information and sent to the background to prompt the relevant operators to maintain the energy storage battery module; if not, it indicates that there is no abnormality in the shutdown of the energy storage battery module, such as the lack of power or the exhaustion of power at the factory, and it is in a charge-discharge working state. Finally, when the energy storage battery module is in a charge and discharge working state, the charging input source for charging the energy storage battery module is selected according to the voltage values ​​of the solar photovoltaic source and the AC source; and the charge and discharge state of the energy storage battery module is set according to the third voltage information of the energy storage battery module.

[0154] According to an embodiment of the present invention, the entering of the battery locked state and sending the first notification information specifically include:

[0155] Get battery status information;

[0156] Obtaining second shutdown code information according to the battery status information and the first shutdown code information;

[0157] Generate first communication information according to the second shutdown code information;

[0158] Disconnect the battery input port and close the battery output relay.

[0159] It should be noted that the battery status information is the state parameter of the energy storage battery, including SOC (state of charge), SOH (state of health), SOP (state of power) and SOF (state of function); respectively describing the battery power, life, power and functional state, and used to evaluate the performance of the battery. According to the battery status information, the cause of the battery abnormality is analyzed. If the analyzed cause of the battery abnormality is the same as the cause indicated by the first shutdown coding information, the second shutdown coding information is set according to the first shutdown coding information; if the analyzed cause of the battery abnormality is different from the cause indicated by the first shutdown coding information, the severity of the abnormal cause indicated by the two is compared, and the second shutdown coding information is set according to the higher severity; wherein, in actual application, the higher the code number, the higher the severity of the abnormality, the easier it is to cause damage or harm to the user or operator. Then, the first communication information is generated according to the second shutdown coding information to notify the background that the energy storage battery is in an abnormal state. Finally, the energy storage battery is locked by setting the input port of the energy storage battery to close the charging channel, and the output relay of the energy storage battery is closed to close the output channel.

[0160] According to an embodiment of the present invention, setting the charge and discharge working state of the battery according to the first voltage information, the second voltage information and the third voltage information is specifically:

[0161] Determining whether the first voltage information exceeds a preset first voltage threshold;

[0162] If yes, the first power supply voltage is a photovoltaic power supply voltage;

[0163] If not, the first supply voltage is the grid supply voltage;

[0164] Acquiring third voltage information in sequence according to a preset order;

[0165] Determining whether the third voltage information is lower than a preset second voltage threshold;

[0166] If so, the input port of the corresponding battery module is connected to charge the battery module through the first supply voltage.

[0167] It should be noted that the first power supply voltage is the input power supply voltage during the charging process of the energy storage battery. First, it is determined whether the first voltage information exceeds the preset first voltage threshold. If so, it means that the voltage value of the solar photovoltaic source meets the charging requirements of the energy storage battery, and the solar photovoltaic source is set to the first power supply voltage; if not, it means that the voltage value of the solar photovoltaic source does not meet the charging requirements of the energy storage battery, and the AC source needs to be set to the first power supply voltage; that is, under the condition that the solar photovoltaic source meets the charging requirements, the solar photovoltaic source is preferably used as the charging power source to reduce the power loss of the AC source, that is, the power generated by the power grid and the diesel generator, thereby reducing the cost of power use and reducing environmental pollution. Since the energy storage battery module is composed of at least two battery modules stacked in parallel, there is an inconsistency in the power state of each battery module. Therefore, it is necessary to measure the voltage of each battery module in turn according to the preset order to obtain the third voltage information. When the third voltage information of the battery module is lower than the preset second voltage threshold, it means that the current battery module needs to be supplemented with power, and the battery module is charged by the first power supply voltage by connecting the input port of the corresponding battery module.

[0168] According to an embodiment of the present invention, it also includes:

[0169] Acquiring third voltage information in sequence according to a preset order;

[0170] Determining whether the third voltage information exceeds a preset third voltage threshold;

[0171] If yes, obtain the first cycle charging times information;

[0172] Sorting the first charging cycle number information in ascending order;

[0173] According to the sorting results, the output relays of the battery modules are turned on in sequence.

[0174] It should be noted that the first cycle charging number information is the number of cycle charging times, which refers to the number of times the battery completes a complete charge and discharge cycle, indicating the number of times the battery goes from fully charged to fully discharged, and is an important indicator for measuring battery life. When the third voltage information of the energy storage battery module exceeds the preset third voltage threshold, it means that the energy storage battery power is in a state where it can maintain discharge operation. At this time, the first cycle charging number information of each battery module is obtained in turn, and the first cycle charging number information of each battery module is sorted in ascending order. Finally, according to the ascending sorting result, the output relays of the battery modules are turned on in order according to the first cycle charging number information from small to large, so as to realize the discharge function of the energy storage battery module.

[0175] According to an embodiment of the present invention, it also includes:

[0176] A display unit, which is a display screen, a digital tube or an indicator light;

[0177] According to the second shutdown code information, corresponding instruction information is displayed.

[0178] It should be noted that the energy storage battery module is provided with a display unit for displaying the working status of the energy storage battery module. When the energy storage battery module is in a normal working state, the display unit is in a standby state, and will enter the corresponding display state only after receiving an operation instruction. When the energy storage battery module is in an abnormal working state, the display unit displays corresponding indication information according to the second shutdown coding information to prompt the operator. As an embodiment, when the display unit uses indicator lights, the working status of the energy storage battery module can be indicated by the number and on and off status of the indicator lights; for example, the indicator light constant indicates normal operation; the indicator light flashes slowly, indicating an abnormal state; the indicator light flashes quickly, indicating another abnormal state. As another embodiment, when the display unit uses a display screen, the display screen can display the second shutdown coding information and the corresponding abnormal cause as indication information.

[0179] According to an embodiment of the present invention, it also includes:

[0180] Acquiring first remote communication instruction information;

[0181] Acquire first operation code information according to first remote communication instruction information;

[0182] If the first operation code information is a power-on operation, the auxiliary source power supply is turned on and the battery output relay is turned on;

[0183] If the first operation code information is a standby operation, turning on the auxiliary source power supply and turning off the battery output relay;

[0184] If the first operation code information is a shutdown operation, the auxiliary source power supply is disconnected and the battery output relay is closed.

[0185] It should be noted that the first remote communication instruction information is a remote communication instruction from the background; the first operation code information is the code of the operation instruction in the first remote communication instruction information, including but not limited to power-on operation, standby operation and power-off operation; the auxiliary source is the power supply of the energy storage battery module processor, which is usually a low voltage obtained by converting and reducing the voltage of a solar photovoltaic source or an AC source. If the first operation code information is a power-on operation, the auxiliary source is turned on to monitor and control the energy storage battery module, and the energy storage battery output relay is turned on for discharge output; if the first operation code information is a standby operation, the auxiliary source is turned on to monitor and control the energy storage battery module, and the energy storage battery output relay is turned off to stop the battery's power output; if the first operation code information is a power-off operation, the auxiliary source power supply is disconnected and the battery output relay is turned off to save energy.

[0186] It is worth mentioning that it also includes:

[0187] Determining first current threshold information according to the third voltage information;

[0188] Obtaining first starting current information according to the first current threshold information;

[0189] Charging current information is set according to the first starting current information and the first current threshold information.

[0190] It should be noted that the first current threshold information is the maximum charging current of the energy storage battery. According to the third voltage information of the energy storage battery module, the preset charging current correspondence table is searched to obtain the first current threshold information. In practical applications, as the voltage value of the energy storage battery is lower, it means that the power is lower, and the current set for charging is larger to achieve rapid energy replenishment. According to the first current threshold information, the initial current when charging the energy storage battery is determined, that is, the first starting current information. When charging starts, the charging current is gradually increased from the first starting current information to the first current threshold information to achieve low-power start-up charging, reduce damage to equipment or devices due to instantaneous surge current, and ensure product reliability.

[0191] It is worth mentioning that it also includes:

[0192] Acquiring first discharge cycle information;

[0193] Determining whether the first discharge cycle information exceeds a preset cycle threshold;

[0194] If yes, obtaining first charging cycle information;

[0195] Determining whether the first charging cycle information exceeds a preset charging cycle threshold;

[0196] If yes, charging is started.

[0197] It should be noted that the first discharge cycle information is the time from the last discharge of the current battery module; the first charge cycle information is the time from the last charge of the current battery module. When the first discharge cycle information exceeds the preset cycle threshold, it means that the battery module is in a state of long-term storage. Then, it is judged whether the first charge cycle information exceeds the preset charge cycle threshold. If so, it means that the module battery has been in a state of long-term storage without discharge and charging, and there is transportation or long-term storage, and the battery is in a state of over-discharge protection. At this time, the battery module is charged to extend the battery life.

[0198] A third aspect of the present invention provides a computer-readable storage medium, which includes a program for an intelligent control method for charging and discharging an energy storage battery. When the program for the intelligent control method for charging and discharging an energy storage battery is executed by a processor, the steps of the intelligent control method for charging and discharging an energy storage battery as described in any one of the above items are implemented.

[0199] The present invention provides an intelligent control method, system and storage medium for charging and discharging an energy storage battery. First, first voltage information and second voltage information are detected. When the first voltage information or the second voltage information exceeds a preset first voltage threshold, a battery monitoring mode is entered; then, after entering the battery monitoring mode, whether it is in a power-on state is determined according to first working state information, and if so, third voltage information is obtained; if not, whether the battery is in a locked state is determined according to first shutdown coding information, and if so, first communication information is sent; if not, third voltage information is obtained; finally, the charging and discharging working state of the battery is set according to the first voltage information, the second voltage information and the third voltage information; the functions of automatically replenishing power when power is low and automatically starting up and activating are realized, thereby reducing manual operation costs and improving user experience.

[0200] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program codes.

[0201] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent control method for charging and discharging an energy storage battery, characterized in that: The method comprises: Acquire first voltage information and second voltage information; Determining whether the first voltage information or the second voltage information exceeds a preset first voltage threshold; If yes, enter the battery monitoring mode; Acquiring first working status information; Determining whether the first working state information is a power-on state; If yes, obtaining third voltage information; If not, obtaining the first shutdown code information; Determining whether the first shutdown code information is a preset shutdown code; If yes, the battery is locked and the first communication information is sent; If not, obtaining third voltage information; Setting a charge and discharge working state of a battery according to the first voltage information, the second voltage information and the third voltage information; The entering of the battery locked state and sending of the first notification information are specifically: Get battery status information; Obtaining second shutdown code information according to the battery status information and the first shutdown code information; Generate first communication information according to the second shutdown code information; Disconnect the battery input port and close the battery output relay; The first voltage information is the input voltage of the solar photovoltaic source; the second voltage information is the input voltage of the AC source; and the third voltage information is the output voltage of the energy storage battery module.

2. The intelligent control method for charging and discharging an energy storage battery according to claim 1, characterized in that: The step of setting the charge and discharge working state of the battery according to the first voltage information, the second voltage information and the third voltage information is specifically: Determining whether the first voltage information exceeds a preset first voltage threshold; If yes, the first power supply voltage is a photovoltaic power supply voltage; If not, the first supply voltage is the grid supply voltage; Acquiring third voltage information in sequence according to a preset order; Determining whether the third voltage information is lower than a preset second voltage threshold; If so, the input port of the corresponding battery module is connected to charge the battery module through the first supply voltage.

3. The intelligent control method for charging and discharging an energy storage battery according to claim 1, characterized in that: Also includes: Acquiring third voltage information in sequence according to a preset order; Determining whether the third voltage information exceeds a preset third voltage threshold; If yes, obtain the first cycle charging times information; Sorting the first charging cycle number information in ascending order; According to the sorting results, the output relays of the battery modules are turned on in sequence.

4. The intelligent control method for charging and discharging an energy storage battery according to claim 1, characterized in that: Also includes: A display unit, which is a display screen, a digital tube or an indicator light; According to the second shutdown code information, corresponding instruction information is displayed.

5. The intelligent control method for charging and discharging an energy storage battery according to claim 1, characterized in that: Also includes: Acquiring first remote communication instruction information; Acquire first operation code information according to first remote communication instruction information; If the first operation code information is a power-on operation, the auxiliary source power supply is turned on and the battery output relay is turned on; If the first operation code information is a standby operation, turning on the auxiliary source power supply and turning off the battery output relay; If the first operation code information is a shutdown operation, the auxiliary source power supply is disconnected and the battery output relay is closed.

6. An intelligent control system for charging and discharging energy storage batteries, characterized in that: The system includes a memory and a processor, wherein the memory includes an intelligent control method program for charging and discharging an energy storage battery, and when the intelligent control method program for charging and discharging an energy storage battery is executed by the processor, the following steps are implemented: Acquire first voltage information and second voltage information; Determining whether the first voltage information or the second voltage information exceeds a preset first voltage threshold; If yes, enter the battery monitoring mode; Acquiring first working status information; Determining whether the first working state information is a power-on state; If yes, obtaining third voltage information; If not, obtaining the first shutdown code information; Determining whether the first shutdown code information is a preset shutdown code; If yes, the battery is locked and the first communication information is sent; If not, obtaining third voltage information; Setting a charge and discharge working state of a battery according to the first voltage information, the second voltage information and the third voltage information; The entering of the battery locked state and sending of the first notification information are specifically: Get battery status information; Obtaining second shutdown code information according to the battery status information and the first shutdown code information; Generate first communication information according to the second shutdown code information; Disconnect the battery input port and close the battery output relay; The first voltage information is the input voltage of the solar photovoltaic source; the second voltage information is the input voltage of the AC source; and the third voltage information is the output voltage of the energy storage battery module.

7. An intelligent control system for charging and discharging energy storage batteries according to claim 6, characterized in that: The step of setting the charge and discharge working state of the battery according to the first voltage information, the second voltage information and the third voltage information is specifically: Determining whether the first voltage information exceeds a preset first voltage threshold; If yes, the first power supply voltage is a photovoltaic power supply voltage; If not, the first supply voltage is the grid supply voltage; Acquiring third voltage information in sequence according to a preset order; Determining whether the third voltage information is lower than a preset second voltage threshold; If so, the input port of the corresponding battery module is connected to charge the battery module through the first supply voltage.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer-readable storage medium includes an intelligent control method program for charging and discharging an energy storage battery. When the intelligent control method program for charging and discharging an energy storage battery is executed by a processor, the steps of the intelligent control method for charging and discharging an energy storage battery as described in any one of claims 1 to 5 are implemented.

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