Battery energy storage system and energy storage method

Abstract

The invention discloses a battery energy storage system and an energy storage method, relates to the technical field of battery energy storage, and mainly aims to solve the problem that the voltage, temperature, power, transformer and power grid voltage of a battery cannot be monitored. The power conversion module is in electrical output connection with the control circuit, the control circuit is in electrical output connection with the power module, the power module is in electrical output connection with the isolation transformer, and the isolation transformer is in electrical output connection with the power module; the storage module can be used for independently storing all input data and analyzing and processing the stored data through the data processing module; by arranging a battery voltage monitoring circuit module, a battery temperature monitoring circuit module, a power detection circuit module, a transformer temperature monitoring circuit module and a power grid voltage monitoring circuit module, the voltage, temperature and power of a battery can be monitored in real time when the whole battery energy storage system works; and the temperature of the transformer and the voltage of the power grid can be monitored in real time at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of battery energy storage, and in particular to a battery energy storage system and an energy storage method. Background Art

[0002] A battery energy storage system refers to a device that can realize the storage and access of electric energy and the bidirectional flow of power. When working, it converts the electrical energy of the battery into chemical energy for storage. In this way, when external power supply is needed, the chemical energy can be converted into electrical energy, and the electrical energy can also be converted into chemical energy and stored in the battery. However, the battery energy storage system in the prior art still has some shortcomings. For example, the entire battery energy storage system cannot separately store the data generated during operation, which makes it impossible to obtain accurate data information when maintaining it. At the same time, the entire system cannot monitor the battery voltage and temperature, power, transformer and grid voltage in real time during daily operation, which makes it impossible to discover and deal with problems in time. To this end, we propose a battery energy storage system and energy storage method. Summary of the invention

[0003] In view of this, the present invention provides a battery energy storage system and an energy storage method, the main purpose of which is to solve the problem that the battery voltage and temperature as well as the power, transformer and grid voltage cannot be monitored in real time.

[0004] According to one aspect of the present invention, a battery energy storage system is provided, comprising:

[0005] The battery junction cabinet is connected to the energy storage battery unit, the energy storage battery unit is electrically connected to the charging control unit through its output, the charging control unit is electrically connected to the power conversion module through its output, the power conversion module is electrically connected to the control circuit through its output, the control circuit is electrically connected to the power module through its output, the power module is electrically connected to the isolation transformer through its output, the isolation transformer is electrically connected to the power module through its output, the power module is electrically connected to the battery management module through its output, the battery management module is electrically connected to the central processing unit through its output, the central processing unit is electrically connected to the control module through its output, the control module is electrically connected to the storage module through its output, the storage module is bidirectionally electrically connected to the data processing module, the data processing module is electrically connected to the battery voltage monitoring circuit module through its output, the battery voltage monitoring circuit module is electrically connected to the battery temperature monitoring circuit module through its output, the battery temperature monitoring circuit module is electrically connected to the power detection circuit module through its output, the power detection circuit module is electrically connected to the transformer temperature monitoring circuit module through its output, the transformer temperature monitoring circuit module is electrically connected to the grid voltage monitoring circuit module through its output, the grid voltage monitoring circuit module is electrically connected to the communication circuit module through its output, the communication circuit module is electrically connected to the circuit monitoring module through its output, the circuit monitoring module is electrically connected to the status indication circuit module through its output, and the status indication circuit module is electrically connected to the alarm module through its output.

[0006] Further: the charging control unit includes a charging management module, the charging management module is electrically connected to the power plug module, the power plug module is electrically connected to the charging unit, the charging unit is electrically connected to the charging circuit module, the charging circuit module is electrically connected to the loop control module, and the loop control module is electrically connected to the power correction module.

[0007] Further: the power module includes a battery, the battery is electrically connected to the switch circuit, the switch circuit is electrically connected to the first wake-up circuit, the first wake-up circuit is electrically connected to the AC conversion circuit, and the AC conversion circuit is electrically connected to the DC conversion circuit.

[0008] Further: the circuit monitoring module includes a monitoring module, the monitoring module is electrically connected to the power monitoring unit, the power monitoring unit is electrically connected to the reference voltage circuit unit, and the reference voltage circuit unit is electrically connected to the analysis module.

[0009] Further: the storage module includes a data storage device, the data storage device is wrapped with a fireproof outer protection shell, line interfaces are provided on both sides of the fireproof outer protection shell, and an insulating protective layer is provided on the inner wall around the inner cavity of the fireproof outer protection shell.

[0010] Further: the battery management module includes a battery information management module, the battery information management module is electrically connected to the power evaluation module, and the power evaluation module is electrically connected to the positioning module.

[0011] Further: the power conversion module includes a power input module, the power input module is electrically connected to the power control module, and the power control module is electrically connected to the voltage stabilizing module.

[0012] According to another aspect of the present invention, there is provided an energy storage method for a battery energy storage system, comprising:

[0013] Establish modeling of equivalent circuits of series, parallel, and series / parallel large-capacity batteries, obtain the current state of charge of each battery module in the power module, and determine whether any one or more battery modules in the power module need to start charging or discharging or terminate charging or discharging according to the state of charge of the battery module;

[0014] When any one or more battery modules need to start charging, the charging control unit and the power conversion module will perform charging work, and when charging is terminated, the charging control unit and the control circuit will turn off the charging circuit;

[0015] All data generated by the power module during operation are processed by the central processor and the control module and stored in the storage module so that the data can be called up during subsequent battery energy storage detection;

[0016] When the power module is performing daily work, the battery voltage monitoring circuit module, the battery temperature monitoring circuit module, the power detection circuit module, the transformer temperature monitoring circuit module and the grid voltage monitoring circuit module monitor the battery, power, transformer and grid voltage in the entire circuit in real time to obtain monitoring data;

[0017] The monitoring data is transmitted to the server backend through the cooperation of the communication circuit module and the circuit monitoring module, and in the event of abnormal monitoring, an alarm is issued through the status indication circuit module and the alarm module.

[0018] By means of the above technical solution, the technical solution provided by the embodiment of the present invention has at least the following advantages:

[0019] The present invention provides a battery energy storage system and an energy storage method. The data generated by the overall system during operation will be transmitted to the storage module through the central processing unit and the control module. The storage module can store all the input data separately, and analyze and process the stored data through the data processing module, so that maintenance personnel can obtain accurate data when performing maintenance. A battery voltage monitoring circuit module, a battery temperature monitoring circuit module, a power detection circuit module, a transformer temperature monitoring circuit module, and a power grid voltage monitoring circuit module are set. When the entire battery energy storage system is working, the voltage and temperature of the battery can be monitored in real time, the power can also be detected, and the temperature of the transformer and the power grid voltage can be monitored in real time at the same time.

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0022] Figure 1 A block diagram of a battery energy storage system provided by an embodiment of the present invention is shown;

[0023] Figure 2 A block diagram of a charging control unit provided by an embodiment of the present invention is shown;

[0024] Figure 3 A block diagram of a battery module provided by an embodiment of the present invention is shown;

[0025] Figure 4 A block diagram of a circuit monitoring module provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0026] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0027] The problem that the existing battery voltage and temperature as well as power, transformer and grid voltage cannot be monitored in real time is addressed. An embodiment of the present invention provides a battery energy storage system, such as Figure 1 As shown, the system includes:

[0028] The battery junction cabinet 1 is connected to the energy storage battery unit 2, the energy storage battery unit 2 is electrically connected to the charging control unit 3, the charging control unit 3 is used to connect to the external line, so as to charge the battery pack, the charging control unit 3 is electrically connected to the power conversion module 4, the power conversion module 4 can convert the received power into the required power and input it into the battery pack, and maintain the stability of the power output, the power conversion module 4 is electrically connected to the control circuit 5, the control circuit 5 is electrically connected to the power module 6, the power module 6 is used to detect the power of the power supply, the power module 6 is electrically connected to the isolation transformer 7, the isolation transformer 7 is electrically connected to the The power module 8 is electrically connected to the battery management module 9 through an output, and the battery management module 9 can manage each battery group in the power module 8. The battery management module 9 is electrically connected to the central processing unit 10 through an output, and the central processing unit 10 is electrically connected to the control module 11 through an output, and the control module 11 is electrically connected to the storage module 12 through an output, and the storage module 12 is bidirectionally electrically connected to the data processing module 13. The data generated by the entire system during operation will be transmitted to the storage module 12 through the processing of the central processing unit 10 and the control module 11, and the storage module 12 will store all the data. The data processing module 13 is electrically connected to the battery The voltage monitoring circuit module 14 can monitor the voltage of the battery in real time. The battery voltage monitoring circuit module 14 is electrically connected to the battery temperature monitoring circuit module 15. The battery temperature monitoring circuit module 15 can monitor the temperature of the battery in real time. The battery temperature monitoring circuit module 15 is electrically connected to the power detection circuit module 16. The power detection circuit module 16 can detect the power. The power detection circuit module 16 is electrically connected to the transformer temperature monitoring circuit module 17. The transformer temperature monitoring circuit module 17 can monitor the temperature of the transformer in real time during operation. The transformer temperature monitoring circuit module 17 is electrically connected to the power detection circuit module 16. The circuit module 17 is electrically connected to the grid voltage monitoring circuit module 18 through its output, and the grid voltage monitoring circuit module 18 can monitor the grid voltage in real time. The grid voltage monitoring circuit module 18 is electrically connected to the communication circuit module 19 through its output, and the communication circuit module 19 is electrically connected to the circuit monitoring module 20 through its output, and all data between the communication circuit module 19 and the circuit monitoring module 20 can be transmitted to the background server. The circuit monitoring module 20 is electrically connected to the status indication circuit module 21 through its output, and the status indication circuit module 21 is electrically connected to the alarm module 22 through its output, and the indication circuit module 21 and the alarm module 22 can remind the staff when problems and failures occur.

[0029] In an embodiment of the present invention, for further explanation and limitation, as Figure 2As shown, the charging control unit 3 includes a charging management module 31, the charging management module 31 is electrically connected to a power plug module 32, the power plug module 32 refers to a power interface and a power plug, the power plug module 32 is electrically connected to a charging unit 33, the charging unit 33 is electrically connected to a charging circuit module 34, the charging unit 33 and the charging circuit module 34 are used to receive power transmission, the charging circuit module 34 is electrically connected to a loop control module 35, the loop control module 35 is electrically connected to a power correction module 36, the loop control module 35 obtains a first PWM waveform according to the first input voltage; the power correction module 36 obtains a first input power according to the first PWM waveform and the first input current, and obtains a bus voltage according to the first input power.

[0030] In an embodiment of the present invention, for further explanation and limitation, as Figure 3 As shown, the power module 8 includes a battery 81, the battery 81 is electrically connected to a switch circuit 82, the switch circuit 82 is electrically connected to a first wake-up circuit 83, the first wake-up circuit 83 is electrically connected to an AC conversion circuit 84, and the AC conversion circuit 84 is electrically connected to a DC conversion circuit 85.

[0031] In an embodiment of the present invention, for further explanation and limitation, as Figure 4 As shown, the circuit monitoring module 20 includes a monitoring module 201, the monitoring module 201 is electrically output connected to a power monitoring unit 202, the power monitoring unit 202 is used to monitor whether the power of the circuit is at a normal value, the power monitoring unit 202 is electrically output connected to a reference voltage circuit unit 203, the reference voltage circuit unit 203 can compare the existing voltage of the circuit with a preset value, the reference voltage circuit unit 203 is electrically output connected to an analysis module 204, and the monitoring data can be analyzed through the analysis module 204.

[0032] In another embodiment of the present invention, this embodiment is different from the first embodiment in that: the storage module 12 includes a data storage device, the data storage device is externally wrapped with a fireproof outer protection shell, both sides of the fireproof outer protection shell are provided with line interfaces, and the inner walls around the inner cavity of the fireproof outer protection shell are provided with insulating protective layers. This arrangement can protect the storage module 12. When an accident occurs, the storage module 12 is protected as much as possible, thereby facilitating subsequent investigation and treatment of the cause of the accident; the battery management module 9 includes a battery information management module, the battery information management module is used to manage the data information of each group of batteries in the same way, and the electrical output of the battery information management module is connected to the power evaluation module The power evaluation module can evaluate the power of each battery group, so as to calculate the service life and life of the entire battery group. The electrical output of the power evaluation module is connected to the positioning module. The positioning module can locate each battery group. When any battery group has problems and failures, the staff can quickly find out which battery group it is; the power conversion module 4 includes a power input module, which is used to receive power transmitted through the circuit. The power input module is electrically connected to the power control module, and the power control module is electrically connected to the voltage stabilizing module. The received power can be controlled and stabilized through the cooperation of the power control module and the voltage stabilizing module.

[0033] It should be noted that the electrical appliances mentioned in this article are all connected to an external power source via wires.

[0034] The present invention provides a battery energy storage system. In the embodiment of the present invention, data generated by the overall system during operation will be transmitted to the storage module through the central processing unit and the control module. The storage module can store all the input data separately, and analyze and process the stored data through the data processing module, so that maintenance personnel can obtain accurate data when performing maintenance; a battery voltage monitoring circuit module, a battery temperature monitoring circuit module, a power detection circuit module, a transformer temperature monitoring circuit module, and a power grid voltage monitoring circuit module are set, and the voltage and temperature of the battery can be monitored in real time when the entire battery energy storage system is working, and the power can also be detected, and the temperature of the transformer and the power grid voltage can be monitored in real time at the same time.

[0035] Furthermore, as a response to the above Figure 1 The embodiment of the present invention provides an energy storage method of a battery energy storage system, including:

[0036] Establish modeling of equivalent circuits of series, parallel, and series / parallel large-capacity batteries, obtain the current state of charge of each battery module in the power module, and determine whether any one or more battery modules in the power module need to start charging or discharging or terminate charging or discharging according to the state of charge of the battery module;

[0037] When any one or more battery modules need to start charging, the charging control unit and the power conversion module will perform charging work, and when charging is terminated, the charging control unit and the control circuit will turn off the charging circuit;

[0038] All data generated by the power module during operation are processed by the central processor and the control module and stored in the storage module so that the data can be called up during subsequent battery energy storage detection;

[0039] When the power module is performing daily work, the battery voltage monitoring circuit module, the battery temperature monitoring circuit module, the power detection circuit module, the transformer temperature monitoring circuit module and the grid voltage monitoring circuit module monitor the battery, power, transformer and grid voltage in the entire circuit in real time to obtain monitoring data;

[0040] The monitoring data is transmitted to the server backend through the cooperation of the communication circuit module and the circuit monitoring module, and in the event of abnormal monitoring, an alarm is issued through the status indication circuit module and the alarm module.

[0041] The present invention provides an energy storage method for a battery energy storage system. In an embodiment of the present invention, data generated during operation are transmitted to a storage module through a central processing unit and a control module. The storage module can store all input data separately, and analyze and process the stored data through a data processing module, so that maintenance personnel can obtain accurate data when performing maintenance. A battery voltage monitoring circuit module, a battery temperature monitoring circuit module, a power detection circuit module, a transformer temperature monitoring circuit module, and a power grid voltage monitoring circuit module are provided. When the entire battery energy storage system is working, the voltage and temperature of the battery can be monitored in real time, the power can also be detected, and the temperature of the transformer and the power grid voltage can be monitored in real time at the same time.

[0042] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0043] 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. A battery energy storage system, comprising a battery combiner cabinet (1), characterized in that: include: The battery junction cabinet (1) is connected to the energy storage battery unit (2); the energy storage battery unit (2) is electrically connected to the charging control unit (3); the charging control unit (3) is electrically connected to the power conversion module (4); the power conversion module (4) is electrically connected to the control circuit (5); the control circuit (5) is electrically connected to the power module (6); the power module (6) is electrically connected to the isolation transformer (7); the isolation transformer (7) is electrically connected to the power module (8); the power module (8) is electrically connected to the battery management module (9); the battery management module (9) is electrically connected to the central processing unit (10); the central processing unit (10) is electrically connected to the control module (11); the control module (11) is electrically connected to the storage module (12); the storage module (12) is bidirectionally electrically connected to the data processing module (13) The data processing module (13) is electrically connected to a battery voltage monitoring circuit module (14) through an output, the battery voltage monitoring circuit module (14) is electrically connected to a battery temperature monitoring circuit module (15) through an output, the battery temperature monitoring circuit module (15) is electrically connected to a power detection circuit module (16) through an output, the power detection circuit module (16) is electrically connected to a transformer temperature monitoring circuit module (17) through an output, the transformer temperature monitoring circuit module (17) is electrically connected to a grid voltage monitoring circuit module (18) through an output, the grid voltage monitoring circuit module (18) is electrically connected to a communication circuit module (19) through an output, the communication circuit module (19) is electrically connected to a circuit monitoring module (20) through an output, the circuit monitoring module (20) is electrically connected to a status indication circuit module (21) through an output, the status indication circuit module (21) is electrically connected to an alarm module (22) through an output.

2. The battery energy storage system according to claim 1, characterized in that: The charging control unit (3) comprises a charging management module (31), a power plug module (32), a charging unit (33), a charging circuit module (34), a loop control module (35) and a power correction module (36); The charging management module (31) is electrically connected to the power plug module (32) through an output, the power plug module (32) is electrically connected to the charging unit (33) through an output, the charging unit (33) is electrically connected to the charging circuit module (34) through an output, the charging circuit module (34) is electrically connected to the loop control module (35) through an output, and the loop control module (35) is electrically connected to the power correction module (36).

3. The battery energy storage system according to claim 1, characterized in that: The power module (8) comprises a battery (81), a switch circuit (82), a first wake-up circuit (83), an AC conversion circuit (84) and a DC conversion circuit (85); The battery (81) is electrically connected to the switch circuit (82), the switch circuit (82) is electrically connected to the first wake-up circuit (83), the first wake-up circuit (83) is electrically connected to the AC conversion circuit (84), and the AC conversion circuit (84) is electrically connected to the DC conversion circuit (85).

4. The battery energy storage system according to claim 1, characterized in that: The circuit monitoring module (20) comprises a monitoring module (201), a power monitoring unit (202), a reference voltage circuit unit (203) and an analysis module (204); The monitoring module (201) is electrically connected to the power monitoring unit (202) through an output, the power monitoring unit (202) is electrically connected to the reference voltage circuit unit (203) through an output, and the reference voltage circuit unit (203) is electrically connected to the analysis module (204) through an output.

5. The battery energy storage system according to claim 1, characterized in that: The storage module (12) includes a data storage device; The data storage device is externally wrapped with a fireproof outer protective shell, both sides of the fireproof outer protective shell are provided with line interfaces, and the inner walls around the inner cavity of the fireproof outer protective shell are provided with insulating protective layers.

6. The battery energy storage system according to claim 1, characterized in that: The battery management module (9) comprises a battery information management module, a power evaluation module and a positioning module; The battery information management module is electrically connected to the power evaluation module through its output, and the power evaluation module is electrically connected to the positioning module through its output.

7. The battery energy storage system according to claim 1, characterized in that: The power conversion module (4) comprises a power input module, a power control module and a voltage stabilizing module. The power input module is electrically connected to the power control module through its output, and the power control module is electrically connected to the voltage stabilizing module through its output.

8. A method for storing energy in a battery energy storage system, characterized in that: include: Establish modeling of equivalent circuits of series, parallel, and series / parallel large-capacity batteries, obtain the current state of charge of each battery module in the power module, and determine whether any one or more battery modules in the power module need to start charging or discharging or terminate charging or discharging according to the state of charge of the battery module; When any one or more battery modules need to start charging, the charging control unit and the power conversion module will perform charging work, and when charging is terminated, the charging control unit and the control circuit will turn off the charging circuit; All data generated by the power module during operation are processed by the central processor and the control module and stored in the storage module so that the data can be called up during subsequent battery energy storage detection; When the power module is performing daily work, the battery voltage monitoring circuit module, the battery temperature monitoring circuit module, the power detection circuit module, the transformer temperature monitoring circuit module and the grid voltage monitoring circuit module monitor the battery, power, transformer and grid voltage in the entire circuit in real time to obtain monitoring data; The monitoring data is transmitted to the server backend through the cooperation of the communication circuit module and the circuit monitoring module, and in the event of abnormal monitoring, an alarm is issued through the status indication circuit module and the alarm module.

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