Display circuit board and energy storage system

Abstract

The application provides a display circuit board and an energy storage system, comprising a substrate, a power supply module, a data processing module, a communication module, a driving module and a display module arranged on the substrate. The data processing module is electrically connected with the power supply module, the communication module and the driving module, the driving module is further electrically connected with the display module, and the power supply module and the communication module are further electrically connected with a control device. The power supply module is configured to convert voltage and provide electric energy for the data processing module. The data processing module is configured to communicate with the control device through the communication module to obtain the running state of the energy storage system and control the driving module to drive the display module to work in the corresponding display state based on the running state. The display module can work in the corresponding display state based on the running state of the energy storage system, and the user can directly know the running state of the energy storage system by observing the display state of the display module, without relying on a complex monitoring platform or special equipment, thereby reducing the operation complexity.

Description

Technical Field

[0001] This application relates to the field of energy storage system technology, specifically to a display circuit board and an energy storage system. Background Technology

[0002] With the rapid development of energy technology, energy storage systems are playing an increasingly important role in the field of energy storage and utilization. Energy storage systems, such as battery energy storage cabinets and integrated photovoltaic energy storage units, are widely used in various scenarios to realize the storage, regulation, and optimized distribution of electrical energy, which is of great significance for ensuring the stable operation of the power grid and improving energy utilization efficiency.

[0003] In the operation of energy storage systems, timely and accurate acquisition of their operational status information is crucial to ensuring the safe, stable, and efficient operation of the system. Currently, most energy storage systems simply upload operational data to the monitoring platform via specific communication protocols. This data is usually presented in digital form, such as specific values ​​for parameters like voltage, current, and power. Maintenance personnel cannot directly judge the current status of the system from the appearance of the energy storage equipment, such as whether it is in a closed state or whether there are any faults. When it is necessary to understand the system status, maintenance personnel must rely on specialized equipment, such as computers or mobile phones, to log in to the corresponding monitoring platform. This process is cumbersome, requiring maintenance personnel to have certain operational skills. Furthermore, in emergency situations, such as sudden power outages or network failures that prevent access to the monitoring platform, maintenance personnel will be unable to obtain system status information in a timely manner, potentially delaying fault handling, affecting the normal operation of the energy storage system, and even posing a potential threat to the safety and stability of the power grid. Utility Model Content

[0004] This application provides a display circuit board and an energy storage system. The display module on the display circuit board can operate in the corresponding display state based on the operating status of the energy storage system. Users can know the operating status of the energy storage system without the need for special equipment, which greatly improves the convenience and timeliness of operation and maintenance.

[0005] In a first aspect, embodiments of this application provide a display circuit board applied to an energy storage system. The energy storage system includes a control device, and the display circuit board includes: a substrate, a power supply module, a data processing module, a communication module, a drive module, and a display module. The power supply module, the data processing module, the communication module, the drive module, and the display module are all disposed on the substrate. The data processing module is electrically connected to the power supply module, the communication module, and the drive module. The drive module is also electrically connected to the display module. The power supply module and the communication module are also electrically connected to the control device. The power supply module is configured to convert voltage and provide power to the data processing module. The data processing module is configured to communicate with the control device through the communication module to obtain the operating status of the energy storage system and, based on the operating status, control the drive module to drive the display module to operate in a corresponding display state.

[0006] In one or more embodiments, the display circuit board further includes a first interface disposed on the substrate; the first interface is disposed on the substrate; the power supply module and the communication module are electrically connected to the control device through the first interface.

[0007] In one or more embodiments, the display circuit board further includes a second interface disposed on the substrate; the second interface is disposed on the substrate; the data processing module is electrically connected to the debugging equipment through the second interface.

[0008] In one or more embodiments, the display circuit board further includes a mounting hole provided on the substrate; the display circuit board is fixed to the energy storage system through the mounting hole.

[0009] In one or more embodiments, the power supply module includes an overcurrent protection circuit, a surge absorption circuit, a reverse connection protection circuit, a first filter circuit, and a step-down circuit disposed on the substrate; one end of the overcurrent protection circuit is electrically connected to the control device, the other end of the overcurrent protection circuit is electrically connected to one end of the surge absorption circuit and one end of the reverse connection protection circuit, the other end of the reverse connection protection circuit is connected to one end of the first filter circuit, the other end of the first filter circuit is electrically connected to the input terminal of the step-down circuit, and the output terminal of the step-down circuit is electrically connected to the data processing module.

[0010] In one or more embodiments, the communication module includes a current limiting circuit, a pull-up circuit, a second filter circuit, a CAN transceiver, and a filter protection circuit disposed on the substrate; one end of the current limiting circuit is electrically connected to the data processing module, the other end of the current limiting circuit is electrically connected to the pull-up circuit, one end of the CAN transceiver, and the second filter circuit, the other end of the CAN transceiver is electrically connected to one end of the filter protection circuit, and the other end of the filter protection circuit is electrically connected to the control device.

[0011] In one or more embodiments, the data processing module includes a microcontroller disposed on the substrate; the microcontroller is electrically connected to the power supply module, the communication module and the drive module.

[0012] In one or more embodiments, the driving module includes a single-power-buffered-gate logic level converter disposed on the substrate; the single-power-buffered-gate logic level converter is electrically connected to the data processing module and the display module.

[0013] In one or more embodiments, the display module includes m light-emitting diodes disposed on the substrate, where m is an integer greater than or equal to 2; the first light-emitting diode to the m-th light-emitting diode are connected in series, and the first light-emitting diode is also electrically connected to the driving module.

[0014] Secondly, embodiments of this application also provide an energy storage system, which includes a control device and a display circuit board as described in any embodiment of the first aspect. The control device is electrically connected to the display circuit board.

[0015] The beneficial effects of this application are as follows: This application provides a display circuit board and an energy storage system, including: a substrate, a power supply module, a data processing module, a communication module, a drive module, and a display module. The power supply module, data processing module, communication module, drive module, and display module are all disposed on the substrate. The data processing module is electrically connected to the power supply module, communication module, and drive module; the drive module is also electrically connected to the display module; and the power supply module and communication module are also electrically connected to a control device. The power supply module is configured to convert voltage and provide power to the data processing module. The data processing module is configured to communicate with the control device through the communication module to obtain the operating status of the energy storage system, and control the drive module to drive the display module to operate in the corresponding display state based on the operating status. In this display circuit board, the display module can operate in the corresponding display state based on the operating status of the energy storage system. Users can directly observe the display state of the display module to know the operating status of the energy storage system without relying on complex monitoring platforms or dedicated equipment. This intuitive display method enables maintenance personnel to detect and handle faults more promptly, improving their work efficiency and reducing operational complexity. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 A structural block diagram of a display circuit board provided in an embodiment of this application;

[0018] Figure 2 This is a structural block diagram of another display circuit board provided in an embodiment of this application;

[0019] Figure 3 This application provides a partial circuit diagram of a display circuit board.

[0020] Figure 4 A structural block diagram of another display circuit board provided in an embodiment of this application;

[0021] Figure 5 A partial circuit diagram of another display circuit board provided in an embodiment of this application;

[0022] Figure 6 A structural diagram of a display circuit board provided in an embodiment of this application;

[0023] Figure 7 A circuit diagram of a driving module provided in an embodiment of this application;

[0024] Figure 8 This is a circuit diagram of a display module provided in an embodiment of this application. Detailed Implementation

[0025] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "electrically connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items. Furthermore, technical features involved in the different embodiments of this application described below may be combined with each other as long as they do not conflict with each other.

[0027] In the daily operation of energy storage systems, accurate and timely acquisition of their operational status information is crucial for maintenance personnel, as it directly affects the system's safe, stable, and efficient operation. Currently, the industry commonly uses a back-end monitoring system or a local Human Machine Interface (HMI) to obtain this information. The back-end monitoring system transmits data collected by the energy storage system to a remote server via network communication, allowing maintenance personnel to log into a specific monitoring platform using computers or other terminal devices to view the system status. The local HMI is installed at the energy storage system site, allowing maintenance personnel to query and operate the system on-site. However, the existing status information acquisition has many shortcomings, as follows: (1) At present, most energy storage systems only upload operating data to the monitoring platform through specific communication protocols. The operation and maintenance personnel cannot directly judge the current status of the system by the appearance of the energy storage system equipment. The operation and maintenance personnel must rely on special equipment, such as computers and mobile phones, to log in to the corresponding monitoring platform to query. This process is cumbersome. Moreover, in some cases, the operation and maintenance personnel cannot obtain the system status information in a timely manner, which may delay the handling of faults, affect the normal operation of the energy storage system, and even pose a potential threat to the safety and stability of the power grid. (2) Although some energy storage cabinets are equipped with simple light-emitting diode (LED) indicator lights, the functions of these indicator lights are very limited. They can usually only show the on and off status of the power supply, such as simply indicating the two statuses of "running / stopping". However, the status information of the energy storage system is extremely rich and complex during actual operation. The existing LED indicator lacks the function of classifying and displaying detailed status. For example, it cannot display key information such as SOC (State of Charge) power, insulation fault, and over-temperature alarm. At the same time, it cannot distinguish between different levels of abnormal conditions, such as warnings and serious faults. In addition, the existing LED indicator has extremely low accuracy in terms of power display. For example, it only uses 3 LEDs to roughly represent the SOC power from 0% to 100%. This makes it difficult for maintenance personnel to accurately grasp the power status of the energy storage system, which is not conducive to the scientific and reasonable scheduling and management of the energy storage system. (3) Since the existing light board does not have an independent system, all status information processing and display logic must be implemented in the main control system of the energy storage system. This makes the code of the main control system extremely complicated. A large amount of display-related code is intertwined with the core control logic, which greatly reduces the readability and maintainability of the code. As the functions of the energy storage system continue to expand and upgrade, the code size of the main control system will further increase, and the coupling between the codes will become higher and higher. This not only increases the difficulty of system development and debugging, but also brings great difficulties to subsequent system maintenance, function expansion and troubleshooting.Once a system malfunctions, maintenance personnel need to spend a lot of time and effort searching for the root cause of the problem in complex code, which seriously affects the reliability and stability of the system.

[0028] To address the aforementioned issues, this application provides a display circuit board and an energy storage system. The display circuit board includes a display module that operates in a corresponding display state based on the energy storage system's operating status. This allows users to directly observe the display module's status to understand the energy storage system's operating status, providing a clear and intuitive display. Furthermore, the display module offers various display states to represent multiple operating states of the energy storage system, offering rich display functionality. Additionally, the display circuit board has an independent data processing module, thereby reducing the amount of code in the central control system and resolving the problem of complex code in the central control system.

[0029] In a first aspect, embodiments of this application provide a display circuit board applied to an energy storage system, see reference. Figure 1 The display circuit board includes a substrate 10, a power supply module 20, a data processing module 30, a communication module 40, a drive module 50, and a display module 60. The energy storage system includes a control device 200. The power supply module 20, data processing module 30, communication module 40, drive module 50, and display module 60 are all mounted on the substrate 10. The data processing module 30 is electrically connected to the power supply module 20, communication module 40, and drive module 50. The drive module 50 is also electrically connected to the display module 60. The power supply module 20 and communication module 40 are also electrically connected to the control device 200. The power supply module 20 is configured to convert voltage and provide power to the data processing module 30. The data processing module 30 is configured to communicate with the control device 200 via the communication module 40 to obtain the operating status of the energy storage system and, based on the operating status, control the drive module 50 to drive the display module 60 to operate in the corresponding display state.

[0030] An energy storage system is a system capable of storing electrical energy and releasing it when needed. An energy storage system typically consists of a battery system, a control device 200, and other components. The battery system includes batteries, and the control device 200 is responsible for monitoring and managing the operating status of the energy storage system, controlling its charging and discharging processes. The energy storage system can be an energy storage cabinet, and the control device 200 can be the Battery Cluster Management Unit (BCMU) within the cabinet. The operating status of the energy storage system can include battery cluster state of charge (SOC) information, cluster charging / discharging and standby status, cluster fault status, and DC contactor status. Alternatively, the energy storage system can be a combiner cabinet, and the control device 200 can be the main controller for the combiner cabinet. The operating status of the energy storage system can include stack SOC information, stack charging / discharging and standby status, stack fault status, and AC switch status. Among them, the battery cluster SOC information refers to the current state of charge of the battery cluster, usually expressed as a percentage, indicating the remaining charge; the cluster charge / discharge and standby status indicates whether the battery cluster is currently charging, discharging, or in standby mode; the cluster fault status indicates whether there is a fault in the battery cluster, such as damage to individual battery cells or abnormal temperature of the battery cluster. When a battery cluster malfunctions, the system will record and display the corresponding fault status; the DC contactor is a switching device used in the energy storage system to control the opening and closing of the DC circuit, and the DC contactor status indicates whether the DC contactor is currently in the on or off state; the stack SOC information refers to the state of charge of the entire battery stack; the stack charge / discharge and standby status indicates whether the battery stack is currently charging, discharging, or in standby mode; the stack fault status indicates whether there is a fault in the battery stack; the AC switch is a device used in the energy storage system to control the opening and closing of the AC circuit, and the AC switch status indicates whether the AC switch is currently in the on or off state.

[0031] The substrate 10 refers to the carrier of the display circuit board, providing physical support and electrical connection for other components (power supply module 20, data processing module 30, communication module 40, drive module 50, and display module 60) within the display circuit board. The substrate 10 is typically made of insulating materials (such as glass fiber reinforced epoxy resin, phenolic resin, etc.) to provide stable physical support and ensure electrical insulation between the various components.

[0032] The power supply module 20 refers to a module that can convert the voltage of an external power supply into a voltage suitable for the operation of the display circuit board, and may include a DC-DC converter circuit.

[0033] The data processing module 30 refers to the device responsible for receiving, processing, and analyzing data from the control device 200, and generating corresponding control signals to the drive module 50. The data processing module 30 typically includes a data processing unit such as a microprocessor or microcontroller.

[0034] The communication module 40 is a device responsible for data transmission between the display circuit board and the control device 200. It communicates with the control device 200 via a wired connection to ensure real-time data transmission and exchange between the display circuit board and the control device 200.

[0035] The driving module 50 refers to the module in the display circuit board responsible for receiving control signals from the data processing module 30 and driving the display module 60 to perform corresponding display operations based on these signals. Specifically, the driving module 50 may include amplifier circuits, switching circuits, etc., to enhance or convert the strength or type of the control signals to ensure that the display module 60 can receive sufficient and appropriate driving signals. For example, when the data processing module 30 detects that the current power of the energy storage system is insufficient, it will generate a corresponding control signal. After receiving this signal, the driving module 50 will drive the display module 60 to display a warning message of insufficient power (such as LED flashing or the LCD screen displaying a corresponding icon).

[0036] The display module 60 uses display devices such as LEDs and LCD screens. The display module 60 has multiple display states, each of which corresponds one-to-one with multiple operating states of the energy storage system. It can operate in the corresponding display state according to the control signals of the data processing module 30 to indicate the current operating status of the energy storage system.

[0037] In this display circuit board, the display module 60 can operate in the corresponding display state based on the operating status of the energy storage system. Users can directly observe the display state of the energy storage system to understand its operating status without relying on complex monitoring platforms or dedicated equipment. This intuitive display method allows maintenance personnel to detect and handle faults more promptly, improving their work efficiency, reducing operational complexity, and enhancing the reliability and stability of the energy storage system. Furthermore, the display module 60 has different display states, reflecting various operating states of the energy storage system, such as power level, fault alarms, and operating modes. This rich display functionality allows maintenance personnel to gain a more comprehensive understanding of the energy storage system's operation, enabling more accurate decision-making. In addition, the display circuit board has an independent data processing module 30, which is responsible for receiving, processing, and analyzing data from the control device 200 and generating corresponding control signals to drive the display module 60. This design eliminates the need for the central control system to handle complex logic related to the display, thereby reducing the amount of code in the central control system and improving code readability and maintainability. Furthermore, because the display circuit board has an independent data processing module 30, its coupling with the main control system is reduced, decreasing the risk of system failure due to complex code. Since the display circuit board is relatively independent of the main control system, it is easier to operate the display circuit board independently when maintenance or upgrades of the energy storage system are required, without affecting the normal operation of the main control system. This design reduces the difficulty and cost of system maintenance and upgrades.

[0038] In some of these embodiments, see Figure 2 The display circuit board also includes a first interface 70 disposed on the substrate 10. The first interface 70 is disposed on the substrate 10. The power supply module 20 and the communication module 40 are electrically connected to the control device 200 through the first interface 70.

[0039] See Figure 3 The first interface 70 can be a connector CN1, which includes multiple electrical connection points (such as pads, pins, etc.), including electrical connection points for transmitting communication data and electrical connection points for transmitting electrical energy.

[0040] By setting up the first interface 70, the connection between the display circuit board and the control device 200 can be established simply by plugging them in, eliminating the need for complex wiring or soldering. This makes the connection between the display circuit board and the control device 200 more convenient and faster. Furthermore, when the display circuit board or the control device 200 needs repair, replacement, or upgrade, they can be easily disconnected from the first interface 70 without affecting the normal operation of other components.

[0041] In some of these embodiments, see Figure 4The display circuit board also includes a second interface 80 disposed on the substrate 10. The second interface 80 is disposed on the substrate 10. The data processing module 30 is electrically connected to the debugging equipment through the second interface 80.

[0042] See Figure 5 The second interface 80 can be a connector CN2, which includes multiple electrical connection points (such as pads, pins, etc.), including electrical connection points for transmitting debugging data and electrical connection points for transmitting electrical power. Debugging equipment refers to professional programmers, debuggers, etc. The second interface 80 is also the debugging simulation download interface. After the debugging equipment establishes a connection with the display circuit board through the second interface 80, it can transmit command data and clock signals to the data processing module 30, thereby enabling online debugging, data monitoring, and other operations on the data processing module 30.

[0043] By setting up the second interface 80, maintenance personnel or developers can connect the debugging equipment to the display circuit board to carry out development and debugging work on the display circuit board, ensuring that the display circuit board can operate stably according to the expected functions and performance.

[0044] In some of these embodiments, see Figure 6 The display circuit board also includes mounting holes 90 provided on the substrate 10. The display circuit board is fixed to the energy storage system through the mounting holes 90.

[0045] The number and position of the fixing holes 90 can be set according to actual needs and are not limited here. Specifically, the energy storage system has mounting holes for installing the display circuit board. Fasteners such as screws and bolts pass through the fixing holes 90 to connect and secure them to the corresponding mounting holes on the energy storage system, so that the display circuit board is fixedly installed on the energy storage system. This ensures that the display circuit board will not be displaced or loosened due to vibration, shaking or other factors during the operation of the energy storage system, thereby improving the stability and reliability of the electrical connection between the two.

[0046] In some embodiments, the power supply module 20 includes an overcurrent protection circuit, a surge absorption circuit, a reverse connection protection circuit, a first filter circuit, and a step-down circuit disposed on the substrate 10. One end of the overcurrent protection circuit is electrically connected to the control device 200, the other end of the overcurrent protection circuit is electrically connected to one end of the surge absorption circuit and one end of the reverse connection protection circuit, the other end of the reverse connection protection circuit is connected to one end of the first filter circuit, the other end of the first filter circuit is electrically connected to the input terminal of the step-down circuit, and the output terminal of the step-down circuit is electrically connected to the data processing module 30.

[0047] For details, please refer to Figure 3The overcurrent protection circuit includes fuse F2; the surge absorption circuit includes transient suppression diode D12, capacitor C71, and capacitor C79; the reverse connection protection circuit includes diode D10; the first filter circuit includes capacitors C78 and C73, common-mode inductor L9, capacitors C74 and C72, inductor L8, capacitor EC2, capacitor C75, and capacitor C76; and the step-down circuit includes resistors R32, R35, and R33, step-down chip U7, capacitor C65, resistor R29, diode D11, resistor R30, capacitor C77, inductor L7, resistor R31, resistor R34, capacitors C66, C67, C68, C69, and C70. The specific circuit connections can be found in [link to circuit diagram]. Figure 3 For further information, please refer to [link / reference]. Figure 3 The power supply module 20 also includes a step-down chip U2, capacitors C17, C18, C19, and C20. The input terminal of the step-down chip U2 can be connected to capacitor C6. Figure 3 In the circuit shown, step-down chip U1 converts a 24V input power supply to a 5V output power supply. Step-down chip U2 further steps down the 5V power supply to output a 3.3V power supply. It should be noted that in the circuit diagrams of this application, a small dot between two connecting lines indicates that the two connecting lines are connected, while the absence of a small dot indicates that the two connecting lines are not connected. For example, in… Figure 3 In the circuit, the FB pin of the step-down chip U7 is not connected to the anode of the diode D1, and the FB pin of the step-down chip U7 is connected to one end of the resistor R31.

[0048] In this power supply module 20, a fuse F2 is connected in series with the positive input terminal of the circuit. When the current is too high, the fuse blows and cuts off the circuit in time, preventing damage to subsequent circuits due to excessive current. Transient voltage suppression diode D12 suppresses voltage spikes and surges, reducing their impact on subsequent circuits. Diode D10 prevents current from flowing through when the power supply is reversed, avoiding damage to the circuit. Furthermore, common-mode inductors L9 and L8 form a π-type filter, which filters out high-frequency noise, thereby reducing noise interference to the circuit and improving its reliability and anti-interference capabilities. In addition, this power supply module 20 can convert a 24V input voltage to a 5V output voltage, and further convert the 5V output voltage to a 3.3V output voltage, thus providing a suitable operating voltage for the display circuit board and ensuring its normal and stable operation.

[0049] In some embodiments, the communication module 40 includes a current limiting circuit, a pull-up circuit, a second filter circuit, a CAN transceiver, and a filter protection circuit disposed on the substrate 10. One end of the current limiting circuit is electrically connected to the data processing module 30, and the other end of the current limiting circuit is electrically connected to the pull-up circuit, one end of the CAN transceiver, and the second filter circuit. The other end of the CAN transceiver is electrically connected to one end of the filter protection circuit, and the other end of the filter protection circuit is electrically connected to the control device 200.

[0050] For details, please refer to Figure 3 The current limiting circuit includes resistors R11 and R14; the pull-up circuit includes resistors R8 and R9; the second filter circuit includes capacitors C26, C27, and C28; the CAN transceiver includes CAN transceiver chip U3; and the filter protection circuit includes resistors R10, C29, and C30, diodes D5, D6, D7, and D4, capacitors C16 and C24, common-mode inductors L4 and L5, capacitors C22, C23, and C31, resistors R12, R15, C21, C25, and R13. In this communication module 40, resistor R11 is connected to the communication data transmitting end of the data processing module 30, resistor R13 is connected to the communication data receiving end of the data processing module 30, resistor R12 is connected to the control device 200 via the CANH signal line, and resistor R14 is connected to the control device 200 via the CANL signal line.

[0051] In this communication module 40, capacitors C26, C27, and C28 are bypass capacitors that can filter out noise and ripple, thereby providing a stable power supply voltage to the CAN transceiver chip U3. Diodes D5, D6, D7, and D4 can clamp the voltage to a safe range when it is too high, preventing damage to the CAN transceiver chip U3 from electrostatic discharge (ESD) and transient voltage spikes. Common-mode inductor L4 can be used to filter out common-mode interference, ensuring the stability of communication data transmission. Inductor L5 and capacitors form an LC filter, which can further filter high-frequency noise, thereby improving the signal-to-noise ratio of the communication signal.

[0052] Specifically, if the display circuit board is applied to the energy storage cabinet, the data processing module 30 can obtain 6 bytes of data frame information from the BCMU through CAN communication. The first byte can indicate the fault level, the second byte can indicate the status of the DC contactor, the third and fourth bytes can indicate the total current of the battery pack, and the fifth and sixth bytes can indicate the SOC status of the battery cluster. In this way, the data processing module 30 can obtain the operating status of the energy storage cabinet by analyzing the data frame information.

[0053] In the communication module 40, the CAN transceiver chip U3 and its peripheral components work together to enable the data processing module 30 and the control device 200 to transmit communication data via the CAN bus.

[0054] In some embodiments, the data processing module 30 includes a microcontroller mounted on the substrate 10. The microcontroller is electrically connected to the power supply module 20, the communication module 40, and the drive module 50.

[0055] Suitable microcontrollers such as STM32 can be used. For details, please refer to [link / reference]. Figure 5 This document illustrates a microcontroller U7 with CAN communication functionality and its peripheral circuitry provided in this application.

[0056] By using a microcontroller as the data processing module 30, multiple functions can be integrated onto a single chip. Compared to using multiple independent discrete components to implement data processing, control, and other functions, this embodiment can greatly reduce the number of components required on the circuit board.

[0057] In some of these embodiments, see Figure 7 The driving module 50 includes a single-supply buffered gate logic level converter U6 disposed on the substrate 10. The single-supply buffered gate logic level converter U6 is electrically connected to the data processing module 30 and the display module 60.

[0058] A single-supply buffered gate logic level converter is an electronic device used to convert the level of a logic signal from one voltage to another.

[0059] In the display circuit board, the data processing module 30 and the display module 60 may operate at different voltage levels. The single-supply buffer gate logic level converter can accurately convert the signal level output by the data processing module 30 into the level required by the display module 60, ensuring that the signal is transmitted accurately and stably between the two and avoiding signal errors or equipment damage caused by level mismatch.

[0060] In some embodiments, the display module 60 includes m light-emitting diodes (LEDs) disposed on the substrate 10, where m is an integer greater than or equal to 2. The first LED to the m-th LED are connected in series, and the first LED is also electrically connected to the driving module 50.

[0061] For details, please refer to Figure 8m is 20, and the 20 LEDs are connected in series. This series connection simplifies the LED circuit structure, simplifies wiring, and reduces the complexity of the circuit board routing. This not only reduces the difficulty of circuit design but also reduces signal interference and fault risks that may arise from complex wiring, thus improving the reliability and stability of the circuit. Furthermore, since all LEDs are connected in series, the data processing module 30 only needs to change the duty cycle of the output pulse width modulation signal to control the light emission state (flickering, constantly on, or normally off) and color of all LEDs. The specific control method can refer to existing technologies and is not limited here.

[0062] Specifically, a pre-established correspondence between the display status of the display module 60 and the operating status of the energy storage system can be established. For example, if the background color of each LED is white, a constantly lit green LED indicates that the energy storage system is in normal operation. If a constantly lit green LED represents 5% SOC, and the green light flashes from bottom to top, it indicates that the energy storage system is charging; conversely, it indicates that the energy storage system is discharging. A constantly lit yellow LED indicates that the energy storage system is fault-free, but the DC contactor is in the off state. A yellow LED flashing twice per second indicates that the energy storage system is in a level one warning state. A constantly lit red LED indicates that the energy storage system is in a level three warning state, which can trigger the energy storage system to trip. A red LED flashing twice per second indicates that the energy storage system is in a protection state, and charging and discharging are prohibited. A constantly lit yellow LED alternating with a flashing LED indicates that the energy storage system is in a level one warning state, and the AC switch is in the off state. A constantly lit yellow LED alternating with a flashing red LED indicates that the energy storage system is in a level two alarm state, and the AC switch is not closed. In this way, the subsequent data processing module 30 can send corresponding drive signals to the drive module 50 based on this correspondence and the received actual operating status of the energy storage system. The drive module 50 then drives the display module 60 to operate in the corresponding display state, allowing maintenance personnel to quickly and intuitively understand the current actual operating status of the energy storage system. In practical applications, the correspondence between the display state of the display module 60 and the operating status of the energy storage system can be set according to actual needs, and is not limited here.

[0063] As can be seen, the display module 60 provided in this embodiment has multiple display states, which can be used to represent multiple operating states of the energy storage system.

[0064] Secondly, embodiments of this application also provide an energy storage system, which includes a control device and a display circuit board as described in any embodiment of the first aspect. The control device is electrically connected to the display circuit board.

[0065] In this embodiment, the display circuit board has the same structure and function as the display circuit board described in any embodiment of the first aspect, and will not be repeated here.

[0066] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display circuit board, characterized in that, Applied to an energy storage system, the energy storage system includes a control device, and the display circuit board includes: a substrate, a power supply module, a data processing module, a communication module, a drive module, and a display module; The power supply module, the data processing module, the communication module, the driving module, and the display module are all mounted on the substrate; The data processing module is electrically connected to the power supply module, the communication module, and the drive module. The drive module is also electrically connected to the display module. The power supply module and the communication module are also electrically connected to the control device. The power supply module is configured to convert voltage and provide power to the data processing module. The data processing module is configured to communicate with the control device through the communication module to obtain the operating status of the energy storage system, and control the drive module to drive the display module to work in the corresponding display state based on the operating status.

2. The display circuit board according to claim 1, characterized in that, The display circuit board also includes a first interface disposed on the substrate; The first interface is disposed on the substrate; The power supply module and the communication module are electrically connected to the control device through the first interface.

3. The display circuit board according to claim 1, characterized in that, The display circuit board also includes a second interface disposed on the substrate; The second interface is located on the substrate; The data processing module is electrically connected to the debugging equipment through the second interface.

4. The display circuit board according to claim 1, characterized in that, The display circuit board also includes mounting holes provided on the substrate; The display circuit board is fixed to the energy storage system through the fixing holes.

5. The display circuit board according to any one of claims 1-4, characterized in that, The power supply module includes an overcurrent protection circuit, a surge absorption circuit, a reverse connection protection circuit, a first filter circuit, and a step-down circuit disposed on the substrate. One end of the overcurrent protection circuit is electrically connected to the control device, the other end of the overcurrent protection circuit is electrically connected to one end of the surge absorption circuit and one end of the reverse connection protection circuit, the other end of the reverse connection protection circuit is connected to one end of the first filter circuit, the other end of the first filter circuit is electrically connected to the input end of the step-down circuit, and the output end of the step-down circuit is electrically connected to the data processing module.

6. The display circuit board according to any one of claims 1-4, characterized in that, The communication module includes a current limiting circuit, a pull-up circuit, a second filter circuit, a CAN transceiver, and a filter protection circuit disposed on the substrate. One end of the current limiting circuit is electrically connected to the data processing module, and the other end of the current limiting circuit is electrically connected to the pull-up circuit, one end of the CAN transceiver, and the second filter circuit. The other end of the CAN transceiver is electrically connected to one end of the filter protection circuit, and the other end of the filter protection circuit is electrically connected to the control device.

7. The display circuit board according to any one of claims 1-4, characterized in that, The data processing module includes a microcontroller mounted on the substrate; The microcontroller is electrically connected to the power supply module, the communication module, and the drive module.

8. The display circuit board according to any one of claims 1-4, characterized in that, The driving module includes a single-power-source buffer gate logic level converter disposed on the substrate; The single-power buffer gate logic level converter is electrically connected to the data processing module and the display module.

9. The display circuit board according to any one of claims 1-4, characterized in that, The display module includes m light-emitting diodes disposed on the substrate, where m is an integer greater than or equal to 2; The first LED to the mth LED are connected in series, and the first LED is also electrically connected to the driving module.

10. An energy storage system, characterized in that, Includes a control device and a display circuit board as described in any one of claims 1-9; The control device is electrically connected to the display circuit board.

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