Bypass control method and system suitable for high-voltage cascade type energy storage system, electronic equipment and medium

Abstract

The invention provides a bypass control method and system suitable for a high-voltage cascade type energy storage system, electronic equipment and a medium, and belongs to the field of energy storage systems. The high-voltage cascade type energy storage system comprises energy storage units, each energy storage unit comprises a plurality of H-bridge power unit chain links, the direct current side of each H-bridge power unit is connected with a battery cluster, and the method comprises the steps that when a certain H-bridge power unit or battery cluster in the high-voltage cascade type energy storage system breaks down, the fault type is judged; if it is determined that the fault type is a bypass fault, the energy storage unit is switched to a bypass mode through switching, so that the fault unit is bypassed; and if the fault is determined to be a non-bypass fault, triggering the high-voltage cascade type energy storage system to trip and stop through the power conversion system. Through design and implementation of an automatic bypass function, rapid isolation can be ensured when a battery cluster or a power unit breaks down, operation of the whole energy storage unit is not affected, and a system can rapidly respond and maintain stable operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage systems, and specifically relates to a bypass control method, system, electronic equipment and medium suitable for a high-voltage cascade energy storage system. Background Art

[0002] With the rapid development of renewable energy and the increasing complexity of power systems, energy storage systems are increasingly used in power grids, especially in smoothing renewable energy output, frequency regulation, peak load shifting, etc. High-voltage cascade energy storage systems have become an important development direction of energy storage technology due to their high efficiency, high reliability and easy expansion.

[0003] In a traditional high-voltage cascade energy storage system, an energy storage unit usually contains multiple H-bridge power unit links, and the DC side of each H-bridge power unit is connected to a battery cluster. Although this structure improves the voltage level and energy density of the system, it also brings certain challenges. Specifically, when a power unit or battery cluster in the system fails, it will cause the entire energy storage unit to shut down, thereby reducing the reliability and stability of the system and affecting the continuous power supply capability of the power system. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a bypass control method, system, electronic device and medium suitable for a high-voltage cascade energy storage system, which is used to fully or at least partially solve the technical problem existing in the above-mentioned prior art that when a power unit or battery cluster in the system fails, the entire energy storage unit is shut down, thereby reducing the reliability and stability of the system and affecting the continuous power supply capability of the power system.

[0005] In a first aspect, an embodiment of the present application provides a bypass control method applicable to a high-voltage cascade energy storage system, wherein the high-voltage cascade energy storage system includes an energy storage unit, wherein the energy storage unit includes a plurality of H-bridge power unit links, and a battery cluster is connected to the DC side of each H-bridge power unit. The bypass control method applicable to the high-voltage cascade energy storage system includes: When a certain H-bridge power unit or battery cluster in the high-voltage cascade energy storage system fails, determine the fault type; If the fault type is determined to be a bypass fault, the energy storage unit is switched to bypass mode to bypass the faulty unit; if the fault is determined to be a non-bypass fault, the high-voltage cascade energy storage system is triggered to trip and shut down through the power conversion system.

[0006] Optionally, if the fault type is determined to be a bypass fault, the energy storage unit is switched to a bypass mode to bypass the faulty unit, including: If the fault type is determined to be a bypass fault, the fault information is uploaded to the power conversion system through the battery array management unit, so that the power conversion system triggers the high-voltage cascade energy storage system pulse blocking to disconnect the DC side of the H-bridge power unit from the battery cluster, and at the same time controls the bypass contactor to close to isolate the faulty unit.

[0007] Optionally, after determining that the fault type is a bypass fault and switching to the bypass mode, the bypass control method applicable to the high-voltage cascade energy storage system also includes: controlling the high-voltage cascade energy storage system to perform self-inspection and confirming that the status is normal, and then restarting the power conversion system to restore the normal operation of the high-voltage cascade energy storage system.

[0008] Optionally, non-bypass fault information is summarized via fiber optic input signals.

[0009] Optionally, the bypass control method applicable to the high-voltage cascade energy storage system also includes: pre-evaluating the fault type of the battery failure by the battery cell manufacturer so that the battery cluster management layer classifies the battery fault type and distinguishes between bypass fault type and non-bypass fault type.

[0010] In a second aspect, the embodiment of the present application further provides a bypass control system applicable to a high-voltage cascade energy storage system, comprising: A judgment unit, used to judge the fault type when a certain H-bridge power unit or battery cluster in the high-voltage cascade energy storage system fails; The control unit is used to, if the fault type is determined to be a bypass fault, switch the energy storage unit to the bypass mode by switching on and off, thereby bypassing the faulty unit; if the fault is determined to be a non-bypass fault, trigger the high-voltage cascade energy storage system to trip and shut down through the power conversion system.

[0011] Optionally, the control unit is specifically used for: If the fault type is determined to be a bypass fault, the fault information is uploaded to the power conversion system through the battery array management unit, so that the power conversion system triggers the high-voltage cascade energy storage system pulse blocking to disconnect the DC side of the H-bridge power unit from the battery cluster, and at the same time controls the bypass contactor to close to isolate the faulty unit.

[0012] Optionally, the bypass control system suitable for the high-voltage cascade energy storage system also includes a classification unit, which is used to pre-evaluate the fault type of the battery failure through the battery cell manufacturer, so that the battery cluster management layer can classify the battery fault type and distinguish between bypass fault type and non-bypass fault type.

[0013] In a third aspect, an embodiment of the present application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the bypass control method applicable to a high-voltage cascade energy storage system are implemented.

[0014] In a fourth aspect, an embodiment of the present application further provides a storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the bypass control method applicable to a high-voltage cascade energy storage system described above are implemented.

[0015] It can be seen from the above technical solutions that the present invention has the following advantages: The bypass control method, system, electronic device and medium provided in the present application and applicable to a high-voltage cascade energy storage system ensure that, through the design and implementation of an automatic bypass function, a battery cluster or power unit can be quickly isolated when a fault occurs, without affecting the operation of the entire energy storage unit, so that the system can respond quickly and maintain stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A flow chart of a bypass control method applicable to a high-voltage cascade energy storage system provided in an embodiment of the present invention; Figure 2 A bypass electrical schematic diagram provided for an embodiment of the present invention; Figure 3 A detailed flow chart of a bypass control method applicable to a high-voltage cascade energy storage system provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a bypass control system applicable to a high-voltage cascade energy storage system provided in an embodiment of the present invention; Figure 5 A schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In the detailed description below, various embodiments of the present disclosure will be described more fully. The present disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present disclosure to the specific embodiments disclosed herein, but rather the present disclosure should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present disclosure.

[0019] Hereinafter, the terms "include" or "may include" that may be used in various embodiments of the present disclosure indicate the presence of the disclosed functions or operations, and do not limit the addition of one or more functions or operations. In addition, as used in various embodiments of the present disclosure, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, or combinations of the foregoing items, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, or combinations of the foregoing items or the possibility of adding one or more features, numbers, steps, operations, or combinations of the foregoing items.

[0020] In various embodiments of the present disclosure, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 The flowchart of a bypass control method for a high-voltage cascade energy storage system in a specific embodiment is shown. The high-voltage cascade energy storage system includes an energy storage unit, wherein the energy storage unit includes a plurality of H-bridge power unit links, and the DC side of each H-bridge power unit is connected to a battery cluster, including the following execution steps: Step 100: When a certain H-bridge power unit or battery cluster in the high-voltage cascade energy storage system fails, determine the type of failure.

[0023] Specifically, the battery cell manufacturer evaluates the battery failure type in advance, so that the battery cluster management layer can classify the battery failure type and distinguish between bypass failure type and non-bypass failure type.

[0024] For example, the battery cell manufacturer first evaluates the types of possible battery failures and determines which failures can be handled by the bypass function. This step is fundamental because it involves a deep understanding of battery performance and safety characteristics, as well as the identification of possible failure modes. The evaluation can determine the types of failures that allow the system to bypass automatically, so that the system's fault tolerance is taken into account during the design phase. The battery cluster management unit (BCMU) is responsible for classifying battery failures and distinguishing between non-bypassable and bypassable failure types. Non-bypassable failures are summarized through optical fiber input signals for emergency processing. Bypassable fault information is sent by the BCMU. This process involves real-time monitoring and rapid response to fault information to ensure that the system can identify and classify faults as soon as possible.

[0025] BCMU manufacturers classify battery faults and distinguish between bypassable and non-bypassable faults. The classification processing mechanism enables the system to take the most appropriate response measures for different types of faults, improving the efficiency and accuracy of fault handling.

[0026] Exemplarily, common fault types of battery clusters include any one or any combination of the following faults: appearance fault (damage or deformation of the shell: may be caused by external impact, vibration or long-term pressure. Unclear identification: the positive and negative pole identification is blurred or incorrect, which may lead to misoperation. Damaged or exposed wiring harness: aging, wear or improper installation of the wiring harness may cause short circuit or open circuit.), electrical fault (overload or short circuit: the current in the circuit exceeds the rated value of the fuse, causing the fuse to blow, or a short circuit occurs between the single cells in the battery cluster or inside the battery.), battery management system (BMS) fault (BMS is responsible for monitoring and managing the status of the battery, including voltage, current, temperature, etc. If the BMS fails or Improper configuration may lead to incorrect charging or discharging strategies, causing overcurrent), battery aging or damage (as the battery is used for a longer time, the battery performance gradually decreases and the internal impedance increases, which may lead to uneven charging and discharging behavior and increase the risk of short circuit.), voltage abnormality (the voltage of the battery cluster is unstable and fluctuates, which may be caused by internal battery failure or external circuit problems.), temperature failure (too high or too low temperature: the battery cluster works in an overheated or overcold environment, which may affect battery performance and cause internal short circuit or other failures. Uneven temperature distribution: the temperature of each single cell in the battery cluster varies greatly, which may be caused by the structure of the battery cluster or environmental factors).

[0027] Step 101: If the fault type is determined to be a bypass fault, the energy storage unit is switched to bypass mode to bypass the faulty unit; if the fault is determined to be a non-bypass fault, the high-voltage cascade energy storage system is triggered to trip and shut down through the power conversion system.

[0028] Specifically, if the fault type is determined to be a bypass fault, the fault information is uploaded to the power conversion system through the battery array management unit, so that the power conversion system triggers the high-voltage cascade energy storage system pulse blocking to disconnect the DC side of the H-bridge power unit from the battery cluster, and at the same time controls the bypass contactor to close to isolate the faulty unit.

[0029] Through modular design, each H-bridge power unit and battery cluster can work independently and can be quickly isolated in the event of a fault without affecting the operation of the entire energy storage unit. The design improves the system's fault tolerance and ensures continuous operation of the system when some components fail.

[0030] Furthermore, after controlling the high-voltage cascade energy storage system to perform self-inspection and confirming that the state is normal, the power conversion system is restarted to restore the normal operation of the high-voltage cascade energy storage system.

[0031] After bypass operation, the system can perform self-check and automatically restart after confirming that the status is normal. The self-check and automatic restart functions reduce system downtime and improve system availability and efficiency.

[0032] For example, see Figure 2 As shown in FIG. 1 , a bypass electrical schematic diagram provided by an embodiment of the present invention is provided. When the power conversion system (PCS) receives a fault signal from the optical fiber input, it will trigger the system to trip and shut down to ensure safety. For bypassable fault information, the PCS will trigger the system pulse blocking to disconnect the DC side from the battery ( Figure 2 The contactors J1 and J2 in the bypass contactor are in the disconnected state), and the bypass contactor J3 is closed to isolate the faulty unit. After the system self-check status is normal, the PCS will restart and resume normal operation of the system.

[0033] In this embodiment, the high-voltage cascade energy storage system can respond quickly when a fault occurs, automatically isolate the faulty unit, and ensure that the abnormality of a single cluster will not affect the continuous operation of the entire energy storage unit, thereby effectively improving the reliable operation capability of the energy storage power station in response to faults. The introduction of the bypass function not only improves the stability and reliability of the system, but also provides technical support for the long-term stable operation of the energy storage power station.

[0034] It should be understood that non-bypass fault information is summarized through optical fiber input signals. Bypassable fault information is uploaded to the power conversion system (PCS) through the battery array management unit (BAMS). This step involves the accurate transmission and processing of fault information, which is the key to achieving system automation and intelligence. As the highest layer in the three-layer architecture of energy storage BMS, BAMS is responsible for collecting information transmitted by BCMU, and has real-time alarm functions and real-time communication functions with PCS, EMS and on-site monitoring.

[0035] In one embodiment, Figure 3 This is a detailed flow chart of a bypass control method applicable to a high-voltage cascade energy storage system provided according to an embodiment of the present invention. This embodiment is further optimized and expanded on the basis of the above embodiments.

[0036] S300: Battery fault detection and classification.

[0037] S301: Determine whether the battery fault is a bypassable fault, if so, execute step S302, otherwise, execute step S304.

[0038] S302: Pulse blocking, DC side disconnection, bypass contactor closing.

[0039] S303: Start operation after self-check is normal.

[0040] S304: PCS trips and shuts down.

[0041] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0042] like Figure 4 As shown, the following is an embodiment of a bypass control system applicable to a high-voltage cascade energy storage system provided by an embodiment of the present disclosure, which belongs to the same inventive concept as the bypass control method applicable to a high-voltage cascade energy storage system in the above-mentioned embodiments. For details not fully described in the embodiment of the bypass control system applicable to a high-voltage cascade energy storage system, reference may be made to the above-mentioned embodiment of the bypass control method applicable to a high-voltage cascade energy storage system.

[0043] A judgment unit 40 is used to judge the fault type when a certain H-bridge power unit or battery cluster in the high-voltage cascade energy storage system fails; The control unit 41 is used to, if it is determined that the fault type is a bypass fault, switch the energy storage unit to the bypass mode by switching, thereby bypassing the faulty unit; if it is determined that the fault is a non-bypass fault, trigger the high-voltage cascade energy storage system to trip and shut down through the power conversion system.

[0044] In some implementations, the control unit 41 is specifically configured to: If the fault type is determined to be a bypass fault, the fault information is uploaded to the power conversion system through the battery array management unit, so that the power conversion system triggers the high-voltage cascade energy storage system pulse blocking to disconnect the DC side of the H-bridge power unit from the battery cluster, and at the same time controls the bypass contactor to close to isolate the faulty unit.

[0045] In some embodiments, the bypass control system suitable for the high-voltage cascade energy storage system also includes a classification unit for pre-evaluating the fault type of the battery failure through the battery cell manufacturer, so that the battery cluster management layer can classify the battery fault type and distinguish between bypass fault type and non-bypass fault type.

[0046] The high-voltage cascade energy storage system can respond quickly when a fault occurs, automatically isolate the faulty unit, and ensure that the abnormality of a single cluster will not affect the continuous operation of the entire energy storage unit, thereby effectively improving the reliable operation capability of the energy storage power station in response to faults. The introduction of the bypass function not only improves the stability and reliability of the system, but also provides technical support for the long-term stable operation of the energy storage power station.

[0047] Figure 5 It is a schematic diagram of the hardware structure of an electronic device for implementing various embodiments of the present invention.

[0048] The bypass control method for a high-voltage cascade energy storage system provided in the embodiment of the present application can be applied to electronic devices. Those skilled in the art will appreciate that the electronic device structure involved in the embodiment of the present invention does not constitute a limitation on the electronic device, and the electronic device may include more or fewer components than shown, or combine certain components, or arrange different components. In an embodiment of the present invention, the electronic device includes but is not limited to a laptop computer, a desktop computer, a workbench, a personal digital assistant, a server, a blade server, a mainframe computer, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the embodiments of the present application described and / or required herein.

[0049] The electronic device may include a processor, an external memory interface, an internal memory, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, a wireless communication module, an audio module, a speaker, a microphone, a sensor module, buttons, a camera, a display, and a SIM card interface, etc.

[0050] It is to be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the electronic device. In other embodiments of the present application, the electronic device may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0051] The processor may include one or more processing units, for example, the processor may include a central processing unit (CPU), an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Among them, different processing units may be independent devices or integrated into one or more processors.

[0052] The processor can be the nerve center and command center of the electronic device. The controller can generate an operation control signal according to the instruction operation code and timing signal to complete the control of fetching and executing instructions.

[0053] A memory may also be provided in the processor for storing instructions and data. In some embodiments, the memory in the processor is a cache memory. The memory may store instructions or data that the processor has just used or is cyclically used. If the processor needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor, and thus improves system efficiency.

[0054] The external memory interface can be used to connect an external memory card, such as a MicroSD card, to expand the storage capacity of the electronic device. The external memory card communicates with the processor through the external memory interface to implement data storage functions. For example, files such as music and videos can be saved in the external memory card.

[0055] The internal memory can be used to store computer executable program codes, which include instructions. The processor executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory. The internal memory may include a program storage area and a data storage area. The internal memory may include a high-speed random access memory and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc.

[0056] The wireless communication function of an electronic device can be realized through an antenna, a wireless communication module, a modem processor, and a baseband processor.

[0057] The wireless communication module can provide wireless communication solutions for electronic devices, including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), etc.

[0058] Electronic devices can implement audio functions, etc. through audio modules, speakers, receivers, microphones, headphone jacks, and application processors.

[0059] Electronic devices can achieve shooting functions through ISP, camera, video codec, GPU, display and application processor.

[0060] Electronic devices can achieve display functions through GPU, display screen and application processor.

[0061] The GPU is a microprocessor for image processing that connects the display screen and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor may include one or more GPUs that execute program instructions to generate or change display information.

[0062] The display screen is used to display images, videos, etc. The display screen includes a display panel.

[0063] The electronic device implements the subject name of the bypass control method for high-voltage cascade energy storage system of this application. When a certain H-bridge power unit or battery cluster in the high-voltage cascade energy storage system fails, the fault type is determined; if the fault type is determined to be a bypass fault, the energy storage unit is switched to bypass mode by switching, thereby bypassing the faulty unit; if the fault is determined to be a non-bypass fault, the high-voltage cascade energy storage system is triggered to trip and shut down through the power conversion system. The technical solution achieves the ability to automatically switch to bypass mode when a specific fault is detected, thereby bypassing the faulty unit and keeping the system running. The automated response mechanism reduces human intervention and improves the response speed and reliability of the system.

[0064] The storage medium provided in the present application stores a program product capable of implementing a bypass control method applicable to a high-voltage cascade energy storage system.

[0065] The bypass control method applicable to the high-voltage cascade energy storage system includes: when a certain H-bridge power unit or battery cluster in the high-voltage cascade energy storage system fails, the fault type is determined; if the fault type is determined to be a bypass fault, the energy storage unit is switched to the bypass mode by switching, thereby bypassing the faulty unit; if the fault is determined to be a non-bypass fault, the high-voltage cascade energy storage system is triggered to trip and shut down through the power conversion system.

[0066] In some possible embodiments, the subject matter of the present disclosure, namely, a bypass control method and system applicable to a high-voltage cascade energy storage system, can be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps of various exemplary embodiments of the present disclosure described in the above “Exemplary Method” section of this specification.

[0067] The storage medium of the present disclosure can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable 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 of the above.

[0068] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bypass control method applicable to a high-voltage cascade energy storage system, wherein the high-voltage cascade energy storage system includes an energy storage unit, wherein: The energy storage unit includes a plurality of H-bridge power unit links, and the DC side of each H-bridge power unit is connected to a battery cluster. The bypass control method applicable to the high-voltage cascade energy storage system includes: When a certain H-bridge power unit or battery cluster in the high-voltage cascade energy storage system fails, determine the fault type; If the fault type is determined to be a bypass fault, the energy storage unit is switched to bypass mode to bypass the faulty unit; if the fault is determined to be a non-bypass fault, the high-voltage cascade energy storage system is triggered to trip and shut down through the power conversion system.

2. The bypass control method applicable to a high-voltage cascade energy storage system according to claim 1, characterized in that: If the fault type is determined to be a bypass fault, the energy storage unit is switched to bypass mode to bypass the faulty unit, including: If the fault type is determined to be a bypass fault, the fault information is uploaded to the power conversion system through the battery array management unit, so that the power conversion system triggers the high-voltage cascade energy storage system pulse blocking to disconnect the DC side of the H-bridge power unit from the battery cluster, and at the same time controls the bypass contactor to close to isolate the faulty unit.

3. The bypass control method applicable to a high-voltage cascade energy storage system according to claim 1, characterized in that: After determining that the fault type is a bypass fault and switching to the bypass mode, the bypass control method applicable to the high-voltage cascade energy storage system also includes: controlling the high-voltage cascade energy storage system to perform self-inspection and confirming that the status is normal, restarting the power conversion system to restore the normal operation of the high-voltage cascade energy storage system.

4. The bypass control method applicable to a high-voltage cascade energy storage system according to claim 1, characterized in that: Non-bypass fault information is summarized via fiber optic input signals.

5. The bypass control method applicable to a high-voltage cascade energy storage system according to claim 1, characterized in that: Also includes: The battery cell manufacturer evaluates the battery failure type in advance, so that the battery cluster management layer can classify the battery failure type and distinguish between bypass failure type and non-bypass failure type.

6. A bypass control system applicable to a high-voltage cascade type energy storage system applied to the bypass control method applicable to a high-voltage cascade type energy storage system as claimed in any one of claims 1 to 5, characterized in that: include: A judgment unit, used to judge the fault type when a certain H-bridge power unit or battery cluster in the high-voltage cascade energy storage system fails; A control unit, for switching the energy storage unit to a bypass mode by switching if the fault type is determined to be a bypass fault, thereby bypassing the faulty unit; If the fault is determined to be a non-bypass fault, the high-voltage cascade energy storage system is triggered to trip and shut down through the power conversion system.

7. The bypass control system suitable for a high-voltage cascade energy storage system according to claim 6, characterized in that: The control unit is specifically used for: If the fault type is determined to be a bypass fault, the fault information is uploaded to the power conversion system through the battery array management unit, so that the power conversion system triggers the high-voltage cascade energy storage system pulse blocking to disconnect the DC side of the H-bridge power unit from the battery cluster, and at the same time controls the bypass contactor to close to isolate the faulty unit.

8. The bypass control system suitable for a high-voltage cascade energy storage system according to claim 6, characterized in that: The bypass control system suitable for the high-voltage cascade energy storage system also includes a classification unit for pre-evaluating the fault type of the battery fault through the battery cell manufacturer, so that the battery cluster management layer can classify the battery fault type and distinguish between bypass fault type and non-bypass fault type.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the bypass control method applicable to a high-voltage cascade energy storage system as described in any one of claims 1 to 5 are implemented.

10. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the bypass control method applicable to a high-voltage cascade energy storage system as claimed in any one of claims 1 to 5 are implemented.

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