Energy storage battery detection device, energy control method, medium and equipment

Abstract

The present disclosure relates to an energy storage battery detection device, an energy control method, a medium and equipment, and belongs to the field of battery detection technology. The energy storage battery detection device includes a battery detection system, a new energy power generation system, an energy storage system and an AC bus; the battery detection system includes a plurality of battery detection units, each of which is connected to the AC bus; the new energy power generation system includes a plurality of power generation units, each of which is connected to the AC bus; the energy storage system includes a plurality of energy storage units, each of which is connected to the AC bus. The present disclosure solves the technical problem of energy waste in the prior art.

Description

Technical Field

[0001] The present disclosure relates to the field of battery detection technology, and in particular to an energy storage battery detection device, an energy control method, a medium and equipment. Background Art

[0002] With the large-scale construction of electrochemical energy storage power stations, safety risks are also gradually increasing. The arrival and annual sampling inspection of energy storage power station batteries is a necessary means to ensure the safe and stable operation of energy storage power stations. The arrival and annual sampling inspection of energy storage power stations refers to laboratory testing of energy storage batteries to evaluate energy storage batteries from the perspectives of rated energy, cycle life, energy efficiency, etc. The energy storage battery charge and discharge performance test is a common test in energy storage battery laboratory testing. This test usually uses a battery charge and discharge tester to perform charge and discharge tests on the energy storage battery under different working conditions, so as to obtain the performance of the energy storage battery under different working conditions.

[0003] Energy storage battery charge and discharge test, namely battery test, includes two processes, charge and discharge. The two processes involve energy absorption (battery charge absorption energy) and feedback (battery discharge feedback) respectively. According to the characteristics of battery charge and discharge energy absorption and feedback, there are two commonly used energy storage battery charge and discharge testers. One is that there is no energy feedback topology structure inside. This type of energy storage battery charge and discharge tester cannot feed power to the power grid, but it has energy dissipation resistors inside. The energy fed back during the battery discharge process is wasted in the form of heat energy. In view of the energy waste problem of this type of charge and discharge tester, the energy waste of the test system can be reduced by adding energy storage battery packs; another type of energy storage battery charge and discharge tester has an energy feedback topology structure inside. The energy fed back during the battery discharge process can be directly fed back to the local power grid through a bidirectional AC / DC converter. In this case, when there is a clear load inside the local power grid, the feedback capacity can be consumed nearby (avoiding waste), but the load inside the local power grid is usually uncertain. When there is no load, it will cause energy waste of battery feedback, especially for testing laboratories with relatively large test scales, it will cause huge waste of electric energy. Therefore, the existing technology has the technical problem of energy waste. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides an energy storage battery detection device, an energy control method, a medium and a device.

[0005] The present disclosure provides an energy storage battery detection device, including a battery detection system, a new energy power generation system, an energy storage system and an AC bus;

[0006] The battery detection system comprises a plurality of battery detection units, each of which is connected to the AC bus;

[0007] The new energy power generation system comprises a plurality of power generation units, each of which is connected to the AC bus;

[0008] The energy storage system includes a plurality of energy storage units, and each of the energy storage units is connected to the AC bus.

[0009] In some embodiments, the battery detection system further includes a DC bus;

[0010] The DC side of each battery detection unit is connected to the DC bus, and the DC bus is connected to the AC bus through a converter.

[0011] In some embodiments, the plurality of battery detection units include at least one of a battery cell detection unit, a battery module detection unit, and a battery cluster detection unit.

[0012] In some embodiments, the plurality of power generation units include at least one of a wind power generation unit and a photovoltaic power generation unit.

[0013] In some embodiments, the plurality of energy storage units include at least one of an all-vanadium liquid flow energy storage unit, an aqueous sodium energy storage unit, a lithium-ion energy storage unit, and a solid-state lithium energy storage unit.

[0014] The present disclosure also provides an energy storage battery energy control method, which is applied to the above energy storage battery detection device, and the method comprises:

[0015] Obtaining the power generation and charging / discharging power of the new energy power generation system, and the power generation and charging / discharging power of the energy storage system;

[0016] Obtaining the charging and discharging power of the energy storage system;

[0017] Determining whether the energy storage system can absorb the power generated by the new energy power generation system;

[0018] If yes, the energy storage system will absorb the power generated by the new energy power generation system;

[0019] If not, the battery detection system will absorb the power generated by the new energy power generation system.

[0020] In some embodiments, it also includes:

[0021] Determining whether the energy of the battery detection system can be internally circulated;

[0022] If so, the energy storage system will absorb the surplus power of the battery detection system.

[0023] In some embodiments, after the step of determining whether the energy of the battery detection system can be internally circulated, the method further includes:

[0024] If not, the battery detection system is powered by the new energy power generation system or the energy storage system.

[0025] The present disclosure also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program or instruction, wherein the program or instruction enables a computer to execute the steps of the above method.

[0026] The present disclosure also provides an electronic device, comprising:

[0027] one or more processors;

[0028] A memory for storing one or more programs or instructions;

[0029] The processor is used to execute the steps of the above method by calling the program or instruction stored in the memory.

[0030] The energy storage battery detection device provided by the present disclosure includes a battery detection system, a new energy power generation system, an energy storage system and an AC bus. The battery detection system includes a plurality of battery detection units, each of which is connected to the AC bus; the new energy power generation system includes a plurality of power generation units, each of which is connected to the AC bus; the energy storage system includes a plurality of energy storage units, each of which is connected to the AC bus. By connecting the battery detection system, the new energy power generation system and the energy storage system to the AC bus, the energy fed back during the discharge process of the battery detection system can be stored in the energy storage system through the AC bus, and the surplus power can also be connected to the grid through the AC bus, thereby reducing energy waste and solving the technical problem of energy waste in the prior art.

[0031] Correspondingly, the energy control method, medium and equipment provided by the present disclosure also have the above-mentioned technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 A schematic diagram of an energy storage battery detection device provided by an embodiment of the present disclosure is shown;

[0035] Figure 2 A schematic diagram of a battery detection system in an embodiment of the present disclosure is shown;

[0036] Figure 3 A flow chart of an energy storage battery energy control method provided by an embodiment of the present disclosure is shown;

[0037] Figure 4 A flow chart showing energy interaction between a test base and a battery testing laboratory in an embodiment of the present disclosure is shown;

[0038] Figure 5 A flow chart of energy coordination control of an energy storage battery testing laboratory in an embodiment of the present disclosure is shown;

[0039] Figure 6 A schematic diagram of an electronic device provided by an embodiment of the present disclosure is shown; DETAILED DESCRIPTION

[0040] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0042] like Figure 1 As shown, the embodiment of the present disclosure provides an energy storage battery detection device, including a battery detection system, a new energy power generation system, an energy storage system and an AC bus. The battery detection system includes a plurality of battery detection units, each of which is connected to the AC bus; the new energy power generation system includes a plurality of power generation units, each of which is connected to the AC bus; the energy storage system includes a plurality of energy storage units, each of which is connected to the AC bus. The AC bus consists of three lines, that is, the AC bus transmits three-phase AC power.

[0043] The energy storage battery detection device provided in the embodiment of the present disclosure can be applied to the test base. The new energy power generation system, the energy storage system and the AC bus are all arranged in the test base, and the battery detection system can be arranged in the battery detection laboratory. The battery detection system includes a plurality of battery detection units, each of which is connected to the AC bus; the new energy power generation system includes a plurality of power generation units, each of which is connected to the AC bus; the energy storage system includes a plurality of energy storage units, each of which is connected to the AC bus. By connecting the battery detection system, the new energy power generation system and the energy storage system to the AC bus, the energy fed back during the discharge process of the battery detection system can be stored in the energy storage system through the AC bus, and the surplus power can also be connected to the grid through the AC bus, thereby reducing energy waste and solving the technical problem of energy waste in the prior art.

[0044] In some embodiments, the battery detection system further includes a DC bus. The DC side of each battery detection unit is connected to the DC bus, and the DC bus is connected to the AC bus via a converter.

[0045] When the battery testing scale is large and the testing time is long, based on the different testing capacities of the battery testing laboratory, a common DC bus topology is used in different battery testing units, and the energy flow of the tested battery is reasonably controlled and managed through the laboratory energy coordination control system, making full use of the energy fed back by the charging and discharging of the tested battery, realizing the circulation of energy within the testing area, and effectively reducing the waste of electricity.

[0046] When the testing laboratory is located in a technology research and development test base (microgrid) that has the functions of energy storage battery testing and multi-type energy storage and new energy system verification platform, the energy flow of the battery testing system and the energy storage system verification platform of the test base is optimized, coordinated, controlled and managed to achieve energy interaction between the testing laboratory and the test base, so that energy can circulate within the testing laboratory and the test base, effectively reducing energy waste.

[0047] In some embodiments, the plurality of battery detection units include at least one of a battery cell detection unit, a battery module detection unit, and a battery cluster detection unit to implement charge and discharge tests of various types of battery cells.

[0048] In some embodiments, the plurality of power generation units include at least one of a wind power generation unit and a photovoltaic power generation unit, providing a stable energy supply for the energy storage system and the battery detection system.

[0049] In some embodiments, the multiple energy storage units include at least one of an all-vanadium liquid flow energy storage unit, an aqueous sodium energy storage unit, a lithium ion energy storage unit, and a solid-state lithium energy storage unit, realizing multiple energy storage methods and providing sufficient energy reserves for the test base.

[0050] like Figure 3As shown, the present disclosure also provides an energy storage battery energy control method, which is applied to the above-mentioned energy storage battery detection device, and the method comprises the following steps:

[0051] S1. Obtain the power generation and charging and discharging power of the new energy power generation system, as well as the power generation and charging and discharging power of the energy storage system.

[0052] S2. Obtain the charging and discharging power of the energy storage system.

[0053] S3. Determine whether the energy storage system can absorb the power generated by the new energy power generation system.

[0054] If so, the energy storage system will absorb the power generated by the new energy power generation system.

[0055] If not, the battery detection system will absorb the power generated by the new energy power generation system.

[0056] Determine whether the multi-type energy storage systems of the test base can absorb the power generated by the renewable energy power generation system. If the energy storage system cannot absorb the power generated by the renewable energy power generation system, it can be connected to the battery testing system of the battery testing laboratory to absorb the power generated by the renewable energy power generation system by adjusting the current charging and discharging power of the battery testing laboratory. If the power generated by the renewable energy power generation system cannot be absorbed, the surplus power can be connected to the grid. If the energy storage system can absorb the power generated by the renewable energy power generation system, it can achieve overall energy optimization operation through energy interaction with the battery testing laboratory.

[0057] In some embodiments, it also includes:

[0058] S4. Determine whether the energy of the battery detection system can circulate internally.

[0059] If so, the energy storage system will consume the excess power of the battery detection system.

[0060] If not, the battery detection system is powered by the new energy power generation system or energy storage system.

[0061] Obtain information such as the current charge and discharge power, SOC (State of Charge), and charge and discharge rate of the battery under test in the battery testing laboratory, and calculate the actual charge and discharge power that can be charged and discharged in the current laboratory. If the energy of the battery testing laboratory can be internally circulated and there is surplus power, it can be connected to the AC bus and interact with the test base for energy. It can be absorbed by the energy storage system of the test base, or the surplus power can be connected to the Internet; if the energy of the battery testing laboratory cannot be internally circulated, it can be connected to the AC bus to absorb the power generated by the new energy of the test base, and the energy storage system of the test base can also be used to supply power to the battery testing laboratory.

[0062] Through the energy storage battery test energy coordination control system, the energy interaction and optimization control between the testing laboratory and the test base can be realized. The energy interaction control method between the test base and the battery testing laboratory is as follows: Figure 4 shown. Figure 4 middle, P es1 … P esn is the real-time power of each energy storage unit in the test base, P ES is the real-time power of the energy storage system, P wind is the real-time power of the wind power generation unit in the test base, P pv The real-time power of photovoltaic power generation in the test base. P E It is the real-time power of the new energy power generation system. P NE Real-time power for the experimental base. P cell1 … P celln The real-time power of each energy storage battery cell in the battery testing laboratory. P module1 … P modulen The real-time power of each energy storage battery module in the battery testing laboratory. P cluster1 … P clustern The real-time power of each energy storage battery cluster in the battery testing laboratory. P LAB Implement power for the battery testing laboratory. Among them, power greater than 0 indicates power generation or discharge, and power less than 0 indicates power consumption or charging. Through the energy interaction between the test base and the battery testing laboratory, the internal circulation of energy can be realized, reducing dependence on the power grid, and at the same time, the surplus power can be connected to the grid.

[0063] Energy coordination control method for energy storage battery testing laboratory Figure 5 shown. Figure 5 middle I cell1 … I celln The real-time charge and discharge current of each energy storage battery cell in the battery testing laboratory. P cell-charging and P cell-discharge are the charging and discharging power of the energy storage battery monomer system, SOC cell1 … SOC celln Real-time charge status of each energy storage battery cell in the battery testing laboratory; Imodule1 … I modulen Real-time charging and discharging current of each energy storage battery module in the battery testing laboratory. P module-charging and P module-discharge They are respectively the charging and discharging power of the energy storage battery module system, SOC module1 … SOC modulen Real-time charge status of each energy storage battery module in the battery testing laboratory; I cluster1 … I clustern Real-time charging and discharging current of each energy storage battery cluster in the battery testing laboratory. P cluster-charging and P cluster-discharge are the charging and discharging power of the energy storage battery cluster system, SOC cluster1 … SOC clustern It is the real-time charge status of each energy storage battery cluster in the battery testing laboratory. Figure 5 In the laboratory, the energy coordination control system consists of a single cell energy coordination control system, a battery module energy coordination control system and a battery cluster energy coordination control system. The energy coordination control systems of each part collect the charging and discharging current, charging and discharging power and the current state of charge. On the basis of meeting the energy storage state of charge, the charging and discharging power of each system is compared, and the real-time power of the current system and the laboratory is calculated, so as to determine whether the current system can operate off-grid and realize the internal circulation of energy. Otherwise, it is connected to the AC power grid.

[0064] The disclosed embodiments provide a high-efficiency and energy-saving topology structure of a common DC bus system in an energy storage battery testing laboratory and its energy coordination control and operation method. The topology structure and method are mainly aimed at the situation where the energy storage battery charging and discharging tester in the energy storage battery testing laboratory is a device with an energy feedback topology structure, and the test scale is large and there are many types of energy storage batteries. Through the coordinated control of the energy storage battery test energy, the charging and discharging detection system of the battery testing laboratory and the energy flow of the battery under test are reasonably designed, the energy of the charging and discharging feedback of the energy storage battery under test is fully utilized, the energy circulation within the detection area is realized, and the waste of electric energy is effectively reduced.

[0065] In addition, the disclosed embodiments also consider the situation where the battery testing laboratory is located in a technical research and development test base (microgrid) with energy storage battery testing and multi-type energy storage and new energy system verification platform functions (all-vanadium liquid flow, aqueous sodium ion, solid-state lithium ion and other small-scale energy storage and wind and solar power generation new energy verification systems). The energy flow of the battery under test is reasonably controlled and managed through the energy coordination control system of the battery testing laboratory. When the energy storage battery under test is discharged, the energy fed back by the discharge of the energy storage battery under test is fully utilized to power the load and energy storage system of the test base; when the energy storage battery under test is charged, it can participate in the energy management and scheduling of the test base as a flexible and controllable load, promote the consumption of new energy in the test base, thereby realizing the internal circulation of energy in the battery testing laboratory and the test base, and effectively reducing the waste of electricity.

[0066] The embodiment of the present disclosure also provides a computer-readable storage medium, which stores a program or instruction, and the program or instruction enables a computer to execute the steps of the above method.

[0067] When executed by a computer processor, the computer executable instructions can also be used to execute the technical solution of any of the above methods provided in the embodiments of the present disclosure to achieve corresponding beneficial effects.

[0068] Through the above description of the implementation methods, the technicians in the relevant field can clearly understand that the embodiments of the present disclosure can be implemented with the help of software and necessary general hardware, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the embodiments of the present disclosure is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0069] The embodiment of the present disclosure also provides an electronic device, including: one or more processors; a memory for storing one or more programs or instructions; the processor calls the programs or instructions stored in the memory to execute the steps of any of the above methods to achieve corresponding beneficial effects.

[0070] Figure 6 Schematic diagram of the hardware structure of the electronic device provided by the embodiment of the present disclosure. Figure 6 As shown, the electronic device includes one or more processors 601 and a memory 602 .

[0071] The processor 601 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions.

[0072] The memory 602 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 601 may run the program instructions to implement the method of the embodiment of the present disclosure described above, and / or other desired functions. Various contents such as input signals, signal components, noise components, etc. may also be stored in the computer-readable storage medium.

[0073] In one example, the electronic device may further include: an input device 603 and an output device 604 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0074] In addition, the input device 603 may also include, for example, a keyboard, a mouse, etc.

[0075] The output device 604 can output various information to the outside, including the determined distance information, direction information, etc. The output device 604 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0076] Of course, to simplify, Figure 6 Only some of the components related to the present disclosure in the electronic device are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, according to specific application situations, the electronic device may further include any other appropriate components.

[0077] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0078] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling energy of an energy storage battery, characterized in that: Applicable to an energy storage battery detection device, the device includes a battery detection system, a new energy power generation system, an energy storage system and an AC bus, the new energy power generation system, the energy storage system and the AC bus are arranged in a test base, and the battery detection system is arranged in a battery detection laboratory; The battery detection system comprises a plurality of battery detection units, each of which is connected to the AC bus; The new energy power generation system comprises a plurality of power generation units, each of which is connected to the AC bus; The energy storage system comprises a plurality of energy storage units, each of which is connected to the AC bus; The battery detection system also includes a DC bus; The DC side of each battery detection unit is connected to the DC bus, and the DC bus is connected to the AC bus through a converter; The method comprises: Obtaining the power generation and charging / discharging power of the new energy power generation system, and the power generation and charging / discharging power of the energy storage system; Determining whether the energy storage system can absorb the power generated by the new energy power generation system; If yes, the energy storage system will absorb the power generated by the new energy power generation system; If not, the battery detection system consumes the power generated by the new energy power generation system; The method further comprises: Obtaining the real-time power of the battery testing laboratory and the real-time power of the test base; wherein the real-time power of the test base is the sum of the real-time power of the new energy power generation system and the real-time power of the energy storage system; If the real-time power of the battery testing laboratory and the real-time power of the test base are both greater than 0, the AC power grid is connected through the AC bus to output electric energy to the AC power grid; if the real-time power of the battery testing laboratory is less than 0 and the real-time power of the test base is greater than 0, the battery testing laboratory is powered by the test base; if the real-time power of the battery testing laboratory and the real-time power of the test base are both less than 0, the battery testing laboratory is powered by the AC power grid through the AC bus; if the real-time power of the battery testing laboratory is greater than 0 and the real-time power of the test base is less than 0, the test base is powered by the battery testing laboratory; The energy storage battery detection device also includes a laboratory energy coordination control system, which includes a single cell energy coordination control system, a battery module energy coordination control system and a battery cluster energy coordination control system. The single cell energy coordination control system is used to collect the charge and discharge current, charge and discharge power and current state of charge of the corresponding battery cell, the battery module energy coordination control system is used to collect the charge and discharge current, charge and discharge power and current state of charge of the corresponding battery module, and the battery cluster energy coordination control system is used to collect the charge and discharge current, charge and discharge power and current state of charge of the corresponding battery cluster; the real-time power of the battery detection laboratory is the sum of the real-time power of the battery cell, the real-time power of the battery module and the real-time power of the battery cluster; the method also includes: Based on the battery cell energy coordination control system, determine whether the real-time power of the battery cell is greater than the real-time power of the battery testing laboratory; if so, connect to the AC power grid and output electric energy to the AC power grid; if not, operate off-grid; or, Based on the battery module energy coordination control system, determine whether the real-time power of the battery module is greater than the real-time power of the battery testing laboratory; if so, connect to the AC power grid and output electric energy to the AC power grid; if not, operate off-grid; or, Based on the battery cluster energy coordination control system, determine whether the real-time power of the battery cluster is greater than the real-time power of the battery testing laboratory; if so, connect to the AC power grid and output electric energy to the AC power grid; if not, operate off-grid; The multiple energy storage units include at least one of an all-vanadium liquid flow energy storage unit, an aqueous sodium energy storage unit, a lithium ion energy storage unit, and a solid-state lithium energy storage unit.

2. The energy storage battery energy control method according to claim 1, characterized in that: The plurality of power generation units include at least one of a wind power generation unit and a photovoltaic power generation unit.

3. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program or instruction, and the program or instruction enables a computer to execute the steps of the method according to any one of claims 1 to 2.

4. An electronic device, characterized in that: include: one or more processors; A memory for storing one or more programs or instructions; The processor is used to execute the steps of the method according to any one of claims 1 to 2 by calling the program or instruction stored in the memory.

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