Power module adaptive inverse logic control method and system based on ring network communication

Abstract

The present invention discloses a power module adaptive anti-logic control method based on ring network communication, which is used for an energy storage system. The energy storage system includes a host and at least two power modules, the host includes a first interface and a second interface, the power modules include a first communication interface, a second communication interface, and a power interface, and the power interface of at least one of the power modules is in an anti-logic state, including: when the power module detects that a message received by its own first communication interface comes from the first interface of the host, or that a message received by the second communication interface comes from the second interface of the host, it is judged that the power interface of the power module is in an anti-logic state, otherwise, it is judged that the power module is in a normal state; the power module sends information that it is in an anti-logic state to the host, and the host compares the received information with preset anti-logic configuration information. If the comparison is consistent, the host unlocks and controls the power module, and the power module starts to work in the anti-logic state.

Description

Technical Field

[0001] The present invention relates to the field of energy storage, and in particular to a power module adaptive inverse logic control method based on ring network communication. Background Art

[0002] In order to achieve a specific voltage level in the energy storage system, it is often necessary to connect multiple power modules in series. Connect the positive output of one module to the negative output of another module, and so on. The final output voltage level can be regarded as the cumulative sum of the output voltages of all modules. The typical connection method is to connect the AC+ port of the lower power module to the AC- port of the upper power module. Figure 1 This is a possible connection method when 5 power modules need to be cascaded in an energy storage cabinet. Every two adjacent power modules are connected by a cross-over cable. This wiring method requires a long cable with a large span and complex wiring.

[0003] An existing improvement method is to use the power module inverse logic function to allow power module 2 and power module 4 to exchange their own AC+ and AC- port definitions, such as Figure 2 As shown on the right. This method can simplify the wiring complexity and cable length while keeping the correct position of the module shell text, LED and other information. The advantages of using the reverse logic connection method are obvious, but how to set the reverse logic state of the module is the main problem. If the power module is fixed when it leaves the factory, special production is required according to actual needs, which increases the difficulty and cost of production and the difficulty of on-site maintenance. If it is manually set when the power module is assembled into a cabinet, the airtightness of the module will be destroyed because the configuration needs to be modified on site, and the labor cost during assembly will be increased. In addition, it is necessary to guard against safety issues caused by setting errors.

[0004] The energy storage communication system can be simplified into two parts: the host and the power module. Under normal working conditions, the host needs to communicate with all subordinate power modules to ensure the normal operation of the entire energy storage system. Figure 3 This is a schematic diagram of the communication logic of the power module as a ring network communication node. A single power module generally contains two independent optical fiber communication interfaces for transmission and reception, marked as port A and port B. When port B receives a host message, the message will be sent from port A to the next node; when port A receives a host message, the message will be sent from port B to the next node. Figure 4The following is a schematic diagram of the structure of a ring network communication composed of a host and multiple power modules in general. The host's message is sent from the two communication interfaces A and B. The message sent from port A is transmitted in a clockwise direction, and the message sent from port B is transmitted in a counterclockwise direction. The port A and port B of each power module are interconnected, similar to the voltage output interface. In general, the B ports of all power modules will always receive messages from the A port of the host, and will not receive messages from the B port of the host, and vice versa. When the power module is installed in the cabinet, Figure 5 As shown on the left, during normal wiring, the module A port needs to be connected across the cabinet to the next module's B port. The optical fiber used is longer and the wiring is more complicated.

[0005] How to meet the anti-logic requirements of power module electrical wiring while simplifying communication wiring is a problem that needs to be solved urgently. Summary of the invention

[0006] Based on the above situation, the main purpose of the present invention is to provide a power module adaptive anti-logic control method based on ring network communication, which aims to reduce the connection port distance between power modules in the energy storage system, reduce the cross-connection between communication lines and power lines, and facilitate construction and maintenance.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0008] A power module adaptive inverse logic control method based on ring network communication, the method is used for an energy storage system, the energy storage system includes a host and at least two power modules, the host includes a first interface and a second interface, the power module includes a first communication interface, a second communication interface and a power interface, the power interface of at least one of the power modules is in an inverse logic state, the method includes the steps of:

[0009] S100, when the power module detects that the message received by its first communication interface comes from the first interface of the host, or the message received by the second communication interface comes from the second interface of the host, it is determined that the power interface of the power module is in a reverse logic state, otherwise, it is determined that the power module is in a normal state; wherein the normal state is: the message received by the first communication interface of the power module comes from the second interface of the host, and the message received by the second communication interface of the power module comes from the first interface of the host;

[0010] S200, the power module sends information that it is in a reverse logic state to the host, and the host compares the received information with the preset reverse logic configuration information. If the comparison is consistent, the host unlocks and controls the power module, and the power module starts working in the reverse logic state.

[0011] Preferably, before step S100, the method further includes: the communication wiring method of the power module in the reverse logic state in the energy storage system is: the first communication interface of the power module is connected to the first communication interface of another power module, and the second communication interface of the power module is connected to the second communication interface of another power module.

[0012] Preferably, in step S100, the power module determines whether the message comes from the first interface or the second interface of the host according to the sending port mark data in the message.

[0013] Preferably, the preset inverse logic configuration information includes information on whether each of the power modules is in an inverse logic state.

[0014] Preferably, in the step S200, if the comparison is inconsistent, the host locks the power module, and the power module is in a non-operating protection state.

[0015] The present invention also discloses a method for adaptively controlling a power module in an energy storage system. The power module comprises a first communication interface, a second communication interface and a power interface. The power interface of at least one of the power modules is in a reverse logic state. The method comprises the steps of:

[0016] T100, when the power module detects that the message received by its first communication interface comes from the first interface of the host of the energy storage system, or the message received by the second communication interface comes from the second interface of the host, it is determined that the power interface of the power module is in a reverse logic state, otherwise, it is determined that the power module is in a normal state;

[0017] T200, the power module sends information that it is in the reverse logic state to the host, and receives an unlocking signal sent by the host to unlock the power module, so that the power module works in the reverse logic state.

[0018] Preferably, before step T100, it also includes: the communication wiring method of the power module in the reverse logic state is: the first communication interface of the power module is connected to the first communication interface of another power module, and the second communication interface of the power module is connected to the second communication interface of another power module.

[0019] Preferably, in step T100, the power module determines whether the message comes from the first interface or the second interface of the host according to the sending port mark data in the message.

[0020] Preferably, the preset inverse logic configuration information includes information on whether each of the power modules is in an inverse logic state.

[0021] Preferably, in the step T200, the power module can also receive a locking signal sent by the host to lock the power module, so that the power module is in a non-operating protection state.

[0022] The present invention also discloses an energy storage system, which includes a host and at least two power modules, wherein the host includes a first interface and a second interface, and the power modules include a first communication interface, a second communication interface and a power supply interface, wherein the power supply interface of at least one of the power modules is in an inverse logic state.

[0023] The power module is used to detect whether the message received by its first communication interface comes from the first interface of the host, or whether the message received by the second communication interface comes from the second interface of the host. If yes, it is judged that the power interface of the power module is in a reverse logic state, otherwise, it is judged that the power module is in a normal state; wherein the normal state is: the message received by the first communication interface of the power module comes from the second interface of the host, and the message received by the second communication interface of the power module comes from the first interface of the host;

[0024] The host is used to receive information that the power module is in a reverse logic state, and compare the received information with preset reverse logic configuration information. If the comparison is consistent, the host controls the unlocking of the power module so that the power module starts working in the reverse logic state.

[0025] Preferably, the communication wiring mode of the power module in the reverse logic state in the energy storage system is: the first communication interface of the power module is connected to the first communication interface of another power module, and the second communication interface of the power module is connected to the second communication interface of another power module.

[0026] Preferably, the power module determines whether the message comes from the first interface or the second interface of the host according to the sending port mark data in the message.

[0027] Preferably, when the host compares the received information with the preset inverse logic configuration information and finds no consistency, the host controls and locks the power module, so that the power module is in a non-operating protection state.

[0028] The present invention also discloses a computer storage medium, which stores a program, wherein the program is used to be executed to implement the power module adaptive anti-logic control method based on ring network communication described in the present invention, or the power module adaptive anti-logic control method in the energy storage system described in the present invention.

[0029] The technical solution of the present invention can effectively reduce the distance between the wiring ports of the power modules in the energy storage system, reduce the cross-connection between the communication line and the power line, and facilitate construction and maintenance. The added comparison and verification protection link between the actual wiring configuration and the expected configuration of the system can reduce the occurrence of human errors to a certain extent and improve the robustness of the system.

[0030] Other beneficial effects of the present invention will be explained in the specific implementation manner through the introduction of specific technical features and technical solutions. Through the introduction of these technical features and technical solutions, those skilled in the art should be able to understand the beneficial technical effects brought about by the technical features and technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred implementation of the power module adaptive inverse logic control method based on ring network communication of the present invention will be described below with reference to the accompanying drawings. In the drawings:

[0032] Figures 1 to 5 It is a wiring diagram of a power module in the prior art;

[0033] Figure 6 A flow chart of a power module adaptive inverse logic control method based on ring network communication according to a preferred embodiment of the present invention;

[0034] Figure 7 A flow chart of a method for adaptive inverse logic control of a power module in an energy storage system according to a preferred embodiment of the present invention;

[0035] Figure 8 A schematic diagram of an energy storage system designed according to the technical solution of the present invention;

[0036] Fig. 9 A schematic diagram of another energy storage system designed according to the technical solution of the present invention. DETAILED DESCRIPTION

[0037] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. In order to avoid confusing the essence of the present invention, known methods, processes, procedures, and components are not described in detail.

[0038] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0039] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprising" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to".

[0040] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0041] Figure 6 The present invention is a flowchart of a power module adaptive inverse logic control method based on ring network communication according to a preferred embodiment of the present invention. The energy storage system includes a host and at least two power modules. The host includes a first interface and a second interface. The power modules include a first communication interface, a second communication interface and a power interface. The power interface of at least one of the power modules is in an inverse logic state. The method includes the steps of:

[0042] S100, when the power module detects that the message received by its first communication interface comes from the first interface of the host, or the message received by the second communication interface comes from the second interface of the host, it is determined that the power interface of the power module is in a reverse logic state, otherwise, it is determined that the power module is in a normal state; wherein the normal state is: the message received by the first communication interface of the power module comes from the second interface of the host, and the message received by the second communication interface of the power module comes from the first interface of the host;

[0043] S200, the power module sends information that it is in a reverse logic state to the host, and the host compares the received information with the preset reverse logic configuration information. If the comparison is consistent, the host unlocks and controls the power module, and the power module starts working in the reverse logic state.

[0044] The technical solution of the present invention can effectively reduce the distance between the wiring ports of the power modules in the energy storage system, reduce the cross-connection between the communication line and the power line, and facilitate construction and maintenance. The comparison and verification protection link between the actual wiring configuration and the expected configuration of the system is added, which can reduce the occurrence of human errors to a certain extent and improve the robustness of the system.

[0045] In a preferred embodiment, before executing the step S100, it also includes: the communication wiring mode of the power module in the reverse logic state in the energy storage system is: the first communication interface of the power module is connected to the first communication interface of another power module, and the second communication interface of the power module is connected to the second communication interface of another power module. In a specific embodiment, the wiring mode can be determined first and the corresponding reverse logic and positive logic configuration information can be written into the host. During operation, the power module will generate reverse logic or positive logic state information according to the actual communication wiring mode and send it to the host. The host will compare and if the comparison is consistent, it will control the unlocking of the corresponding power module, and the power module will be in the reverse logic working state.

[0046] In a preferred embodiment, in step S100, the power module determines whether the message comes from the first interface or the second interface of the host according to the sending port mark data in the message. Usually, the message content sent by the first interface and the second interface of the host is basically the same, but the header of the message information has a mark for identifying the sending port, and the power module can determine whether a host message comes from the first interface or the second interface of the host according to the mark.

[0047] In a preferred embodiment, the preset inverse logic configuration information includes information on whether each power module is in an inverse logic state. For example, if 2 of 5 power modules are in an inverse logic state and the other 3 are in a normal state, the state information of the 5 power modules will be stored as the preset inverse logic configuration information.

[0048] In a preferred embodiment, in the step S200, if the comparison is inconsistent, the host locks the power module, and the power module is in a non-operating protection state.

[0049] The present invention also discloses a method for adaptive inverse logic control of a power module in an energy storage system. The method is used for a power module in an energy storage system. Figure 7 As shown, the power module includes a first communication interface, a second communication interface and a power interface, and the power interface of at least one of the power modules is in a reverse logic state. The method includes the steps of:

[0050] T100, when the power module detects that the message received by its first communication interface comes from the first interface of the host of the energy storage system, or the message received by the second communication interface comes from the second interface of the host, it is determined that the power interface of the power module is in a reverse logic state, otherwise, it is determined that the power module is in a normal state;

[0051] T200, the power module sends information that it is in the reverse logic state to the host, and receives an unlocking signal sent by the host to unlock the power module, so that the power module works in the reverse logic state.

[0052] In a preferred embodiment, before step T100, it can also include: the communication wiring method of the power module in the reverse logic state is: the first communication interface of the power module is connected to the first communication interface of another power module, and the second communication interface of the power module is connected to the second communication interface of another power module.

[0053] In a preferred implementation, in step T100, the power module determines whether the message comes from the first interface or the second interface of the host according to the sending port tag data in the message.

[0054] In a preferred implementation, the preset inverse logic configuration information includes information on whether each of the power modules is in an inverse logic state.

[0055] In a preferred embodiment, in step T200, the power module can also receive a locking signal sent by the host to lock the power module, so that the power module is in a non-operating protection state.

[0056] The present invention also discloses an energy storage system, which includes a host and at least two power modules, wherein the host includes a first interface and a second interface, and the power modules include a first communication interface, a second communication interface and a power supply interface, wherein the power supply interface of at least one of the power modules is in an inverse logic state.

[0057] The power module is used to detect whether the message received by its first communication interface comes from the first interface of the host, or whether the message received by the second communication interface comes from the second interface of the host. If yes, it is judged that the power interface of the power module is in a reverse logic state, otherwise, it is judged that the power module is in a normal state; wherein the normal state is: the message received by the first communication interface of the power module comes from the second interface of the host, and the message received by the second communication interface of the power module comes from the first interface of the host;

[0058] The host is used to receive information that the power module is in a reverse logic state, and compare the received information with preset reverse logic configuration information. If the comparison is consistent, the host controls the unlocking of the power module so that the power module starts working in the reverse logic state.

[0059] In a preferred embodiment, the communication wiring method of the power module in the reverse logic state in the energy storage system is: the first communication interface of the power module is connected to the first communication interface of another power module, and the second communication interface of the power module is connected to the second communication interface of another power module.

[0060] In a preferred implementation, the power module determines whether the message comes from the first interface or the second interface of the host according to the sending port mark data in the message.

[0061] In a preferred embodiment, when the host compares the received information with the preset inverse logic configuration information and finds no consistency, the host controls and locks the power module, so that the power module is in a non-operating protection state.

[0062] like Figure 8 On the left side, in the ideal wiring form, the message of the first interface (port A) of the host is first received by the second communication interface (port B) of the power module 5, then sent by the first communication interface (port A), and then received by the first communication interface (port A) of the power module 4, until the first communication interface (port A) of the power module 2 also receives the message of the first interface (port A) of the host. The figure also shows that the message of the second interface (port B) of the host is first received by the first communication interface (port A) of the power module 1, then sent by the second communication interface (port B), and then received by the second communication interface (port B) of the power module 2. That is, the first communication interface (port A) of the power module 2 will receive the message of the first interface (port A) of the host, and the second communication interface (port B) of the power module 2 will receive the message of the second interface (port B) of the host. Therefore, it is judged that the power interface of the power module 2 is configured as the reverse logic state, and its AC+ and AC- port definitions are swapped. The same is true for the power module 4. At this time, power modules 2 and 4 will send information that they are in the reverse logic state to the host. The host will compare the information with the preset reverse logic configuration information. If they are the same, the host will send unlock information to power modules 2 and 4. After power modules 2 and 4 are unlocked, they will start working in the reverse logic state. Figure 8 As shown on the right, because the power modules 2 and 4 are configured in an inverse logic state, a relatively ideal electrical wiring configuration is formed, and the connection can be performed in the manner shown in the figure without the need for winding connections.

[0063] Fig. 9 A schematic diagram of another energy storage system designed according to the technical solution of the present invention, wherein, from power module 6 to power module 10, the first communication interface (port A) of these modules will receive messages from the first interface (port A) of the host, and the second communication interface (port B) will receive messages from the second interface (port B) of the host, so they are all configured to be in an inverse logic state, which can simplify the connection complexity of the electrical wiring.

[0064] The present invention also provides a computer storage medium, on which an execution program is stored. When the execution program is executed, the control method described in any one of the above items is implemented.

[0065] It should be noted that the computer-readable storage medium described in the embodiments of the present disclosure is not limited to the above-mentioned embodiments, and may also be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the embodiments of the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, device, or device.

[0066] It will be appreciated by those skilled in the art that, under the premise of no conflict, the above-mentioned preferred solutions can be freely combined and superimposed. Among them, the flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment, or a part of a code, and the module, program segment, or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings, for example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions. The numbering of each step in this article is only for the convenience of description and reference, and is not used to limit the order of execution. The specific execution order is determined by the technology itself, and those skilled in the art can determine various allowable and reasonable orders based on the technology itself.

[0067] It should be noted that the use of step numbers (letters or numbers) to refer to certain specific method steps in the present invention is only for the purpose of convenience and simplicity of description, and is by no means intended to limit the order of these method steps. Those skilled in the art will understand that the order of the relevant method steps should be determined by the technology itself and should not be inappropriately limited by the existence of step numbers. Those skilled in the art can determine various permissible and reasonable step orders based on the technology itself.

[0068] Those skilled in the art will appreciate that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0069] It should be understood that the above-mentioned embodiments are merely illustrative and not restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions that can be made by those skilled in the art to the above-mentioned details will all be included in the scope of the claims of the present invention.

Claims

1. A power module adaptive inverse logic control method based on ring network communication, the method is used in an energy storage system, characterized in that: The energy storage system comprises a host and at least two power modules, the host comprises a first interface and a second interface, the power modules comprise a first communication interface, a second communication interface and a power interface, the power interface of at least one of the power modules is in an inverse logic state, and the method comprises the steps of: S100, when the power module detects that the message received by its first communication interface comes from the first interface of the host, or the message received by the second communication interface comes from the second interface of the host, it is determined that the power interface of the power module is in a reverse logic state, otherwise, it is determined that the power module is in a normal state; wherein the normal state is: the message received by the first communication interface of the power module comes from the second interface of the host, and the message received by the second communication interface of the power module comes from the first interface of the host; S200, the power module sends information that it is in a reverse logic state to the host, and the host compares the received information with the preset reverse logic configuration information. If the comparison is consistent, the host unlocks and controls the power module, and the power module starts working in the reverse logic state. If the comparison is inconsistent, the host locks the power module, and the power module is in a non-working protection state.

2. The power module adaptive inverse logic control method based on ring network communication according to claim 1 is characterized in that: Before step S100, it also includes: the communication wiring method of the power module in the reverse logic state in the energy storage system is: the first communication interface of the power module is connected to the first communication interface of another power module, and the second communication interface of the power module is connected to the second communication interface of another power module.

3. The power module adaptive inverse logic control method based on ring network communication according to claim 1 is characterized in that: In the step S100, the power module determines whether the message comes from the first interface or the second interface of the host according to the sending port mark data in the message.

4. The power module adaptive inverse logic control method based on ring network communication according to claim 1, characterized in that: The preset inverse logic configuration information includes information on whether each of the power modules is in an inverse logic state.

5. A power module adaptive inverse logic control method in an energy storage system, characterized in that: The power module comprises a first communication interface, a second communication interface and a power interface, the power interface of at least one of the power modules is in a reverse logic state, and the method comprises the steps of: T100, when the power module detects that the message received by its first communication interface comes from the first interface of the host of the energy storage system, or the message received by the second communication interface comes from the second interface of the host, it is determined that the power interface of the power module is in a reverse logic state, otherwise, it is determined that the power module is in a normal state; T200, the power module sends information that it is in a reverse logic state to the host, and receives an unlocking signal sent by the host to unlock the power module, so that the power module works in the reverse logic state. The power module can also receive a locking signal sent by the host to lock the power module, so that the power module is in a non-working protection state.

6. The power module adaptive inverse logic control method in the energy storage system according to claim 5, characterized in that: Before step T100, it also includes: the communication wiring method of the power module in the reverse logic state is: the first communication interface of the power module is connected to the first communication interface of another power module, and the second communication interface of the power module is connected to the second communication interface of another power module.

7. The power module adaptive inverse logic control method in the energy storage system according to claim 5, characterized in that: In the step T100, the power module determines whether the message comes from the first interface or the second interface of the host according to the sending port mark data in the message.

8. The power module adaptive inverse logic control method in the energy storage system according to claim 5, characterized in that: The preset inverse logic configuration information includes information on whether each of the power modules is in an inverse logic state.

9. An energy storage system, characterized in that: The energy storage system comprises a host and at least two power modules, the host comprises a first interface and a second interface, the power modules comprise a first communication interface, a second communication interface and a power interface, and the power interface of at least one of the power modules is in an inverse logic state. The power module is used to detect whether the message received by its first communication interface comes from the first interface of the host, or whether the message received by the second communication interface comes from the second interface of the host. If yes, it is judged that the power interface of the power module is in a reverse logic state, otherwise, it is judged that the power module is in a normal state; wherein the normal state is: the message received by the first communication interface of the power module comes from the second interface of the host, and the message received by the second communication interface of the power module comes from the first interface of the host; The host is used to receive information that the power module is in a reverse logic state, and compare the received information with preset reverse logic configuration information. If the comparison is consistent, the host controls to unlock the power module so that the power module starts the reverse logic state to work. When the host compares the received information with the preset reverse logic configuration information and finds it inconsistent, the host controls to lock the power module so that the power module is in a non-working protection state.

10. The energy storage system according to claim 9, characterized in that: The communication wiring mode of the power module in the reverse logic state in the energy storage system is as follows: the first communication interface of the power module is connected to the first communication interface of another power module, and the second communication interface of the power module is connected to the second communication interface of another power module.

11. The energy storage system according to claim 9, characterized in that: The power module determines whether the message comes from the first interface or the second interface of the host according to the sending port mark data in the message.

12. A computer storage medium, characterized in that: The storage medium stores a program, wherein the program is used to be executed to implement the adaptive anti-logic control method of a power module based on ring network communication as described in any one of claims 1-4, or the adaptive anti-logic control method of a power module in an energy storage system as described in any one of claims 5-8.

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