Intelligent energy storage system for motor home

Abstract

The invention provides an intelligent energy storage system for a motor home, which relates to the field of energy storage systems and comprises an energy storage module, a charging management module, a voltage control module, an output control module, a multifunctional universal interface module, an intelligent control module and a man-machine interaction module. And the energy storage module adopts a high-energy-density lithium iron phosphate battery pack, integrates a battery management system (BMS), monitors the battery state in real time and performs equalization management. The charging management module supports three charging modes of vehicle-mounted charging, photovoltaic charging and commercial power charging, and dynamically adjusts charging parameters through an intelligent switching function. And the voltage control module adopts a PID control algorithm and a CC-CV charging algorithm to ensure the stability of the input voltage and the efficient charging of the battery. And the output control module provides various voltage outputs, so that diversified power utilization requirements of the motor home equipment are met. The multifunctional universal interface module automatically identifies the interface type and matches the output voltage to adapt to different devices.

Description

Technical Field

[0001] The present invention relates to the field of energy storage systems, and in particular to an intelligent energy storage system for recreational vehicles. Background Art

[0002] With the increasing popularity of RV travel, RV users are increasingly demanding electricity. Traditional RV power systems typically rely on a single power generation method (such as an onboard generator or mains electricity). When the RV needs to be parked for extended periods, the energy storage battery often lacks sufficient power. In these situations, the vehicle must be started to generate electricity, resulting in low energy utilization and inflexible power supply. Photovoltaic charging also lacks a management mechanism, resulting in poor voltage stability and low energy utilization.

[0003] In order to solve the above problems, the present invention proposes an intelligent energy storage system for RVs. Summary of the Invention

[0004] The purpose of the present invention is to address the current problems of low energy utilization, inflexible power generation, poor photovoltaic voltage stability and low energy utilization.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following intelligent energy storage system for RVs to improve the above-mentioned problems.

[0006] This application specifically includes the following modules: Energy storage module: Adopting high-energy-density lithium iron phosphate (LiFePO4) battery packs and integrating a battery management system (BMS) to monitor battery status in real time and perform balancing management to prevent overcharging, over-discharging, overcurrent, and overtemperature. The BMS monitors the voltage, current and temperature of individual batteries in real time, and ensures the consistency of the battery pack through balancing management, thereby extending battery life.

[0007] Charging management module: Supports three charging methods: vehicle charging, photovoltaic charging and mains charging: On-board charging: By connecting to the RV generator, the unstable DC power (10V-32V DC) is transmitted to the voltage control module for voltage stabilization; Photovoltaic charging: PV panels generate electricity from sunlight and use the maximum power point tracking (MPPT) algorithm to optimize energy utilization. Mains charging: The AC-DC converter converts 220V AC mains power into DC power, and improves efficiency through power factor correction (PFC). The system automatically determines the charging mode (on-board charging, photovoltaic charging or mains charging) based on the input voltage and current, and dynamically adjusts the charging parameters through the intelligent switching function.

[0008] Voltage Control Module: Adopt PID control algorithm to stabilize the input voltage and support wide voltage input (10V-32V DC and AC110V-220V); In scenarios where the input voltage is relatively stable, the CC-CV charging algorithm is used for battery charging management, including constant current stage and constant voltage stage; PID control algorithm: Ensures the stability of input voltage by adjusting the proportional, integral and differential coefficients in real time.

[0009] CC-CV charging algorithm: Constant current stage: when the battery voltage is lower than the set value When the constant current Charge, Constant voltage stage: When the battery voltage reaches the set value , keep charging at a constant voltage until the charging current drops to .

[0010] Output control module: Includes a DC-DC converter and AC inverter, providing multiple voltage outputs such as 12V DC, 24V DC, and 220V AC to meet the diverse power needs of RV equipment; The power of the energy storage module is provided with 12V DC and 24V DC output through the DC-DC converter, and the DC power is converted into 220V AC alternating current through the AC inverter for use in household appliances.

[0011] Multifunctional universal interface module: Provides multiple interface types (such as USB, Type-C, two-hole socket and three-hole socket), and automatically identifies the interface type and matches the output voltage; By detecting the resistance value or voltage signal of the interface, it automatically identifies the type of interface inserted and adjusts the output voltage according to the interface type (such as 5V DC, 9V DC, 220V AC, etc.).

[0012] Intelligent control module: Adopt state estimation algorithm and dynamic adjustment strategy to monitor battery status and load demand in real time and optimize energy distribution.

[0013] Provides multiple protection functions such as overvoltage, overcurrent, overtemperature, and short circuit to ensure safe operation of the system.

[0014] Supports remote monitoring function, users can view system status, control charging and discharging operations and receive alarm information in real time through mobile APP or Web terminal; State estimation algorithm: Dynamically adjusts the charge and discharge strategy by calculating the battery's SOC (State of Charge) and SOH (State of Health) in real time.

[0015] Remote monitoring: System status information is transmitted to the mobile phone APP or Web terminal through Wi-Fi, Bluetooth or 4G communication modules to achieve remote management.

[0016] Human-computer interaction module: Includes an LCD display and buttons to display system status information (such as battery power, input / output power) and provide a user operation interface.

[0017] Modular design: Each functional module (such as energy storage module, charging management module, output control module, etc.) is connected using standardized interfaces and communication protocols, supporting flexible expansion and maintenance. Users can add or replace modules as needed (such as adding photovoltaic charging units or expanding energy storage capacity) without modifying the system architecture.

[0018] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of this application: 1. Through the charging management module, it integrates three charging methods: vehicle charging, photovoltaic charging and mains charging, and supports intelligent switching, realizing flexible adaptation of multiple charging methods, solving the problem of single power supply mode and inability to flexibly adapt to different scenarios in existing technologies.

[0019] 2. Through the voltage control module, the PID control algorithm is used to adjust the input voltage in real time, and combined with the wide voltage input design, the input voltage is stabilized, solving the problem of large fluctuations in the input voltage of vehicle-mounted power generation and photovoltaic power generation in the existing technology, which leads to system instability.

[0020] 3. By setting up the CC-CV charging algorithm and combining it with the real-time monitoring of the battery status by the battery management system (BMS), efficient battery charging management is achieved, solving the problems of low battery charging efficiency and easy overcharging or over-discharging in the existing technology.

[0021] 4. Through the output control module, integrated DC-DC converter and AC inverter, multiple voltage outputs such as 12V DC, 24V DC and 220V AC are provided, realizing the diversified power demand of RV equipment and solving the problem of single output voltage in existing technology that cannot meet the diversified power demand of RV.

[0022] 5. By setting up a multifunctional universal interface module, using interface type automatic identification technology and voltage automatic matching circuit, intelligent adaptation of multiple interface types (such as USB, Type-C, two-hole sockets and three-hole sockets) is achieved, solving the problems of poor interface compatibility and user inconvenience in existing technologies.

[0023] 6. Through the intelligent control module, state estimation algorithm and dynamic adjustment strategy are adopted to monitor the battery status and load demand in real time, realizing intelligent distribution and optimized management of energy, solving the problems of unreasonable energy distribution and low system efficiency in the existing technology.

[0024] 7. Through the remote monitoring function, combined with the intelligent control module and communication module, users can view the system status, control charging and discharging, and receive alarm information in real time through mobile phone APP or Web terminal, solving the problems of inconvenient system operation and lack of remote management capabilities in the existing technology.

[0025] 8. Through the modular design, the energy storage module, charging management module, output control module and other functional modules are independently designed and interconnected, realizing flexible expansion and maintenance of the system, and solving the problems of difficult system maintenance and limited functional expansion in the existing technology.

[0026] 9. By setting up multiple safety protection functions (such as overvoltage, overcurrent, overtemperature, and short-circuit protection), combined with the real-time monitoring and rapid response of the intelligent control module, the safe operation of the system is achieved, solving the problems of lack of perfect protection mechanism and insufficient system security in the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the intelligent energy storage system for RVs provided in this application; Figure 2 This is a schematic diagram of the composition of the charging management module in the intelligent energy storage system for RVs provided in this application. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein may be combined with each other.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0032] Example 1 Please refer to Figure 1 and Figure 2 , an intelligent energy storage system for RVs, comprising Energy storage module: used to store electrical energy, using a high-energy-density lithium iron phosphate (LiFePO4) battery pack and integrating a battery management system (BMS) to monitor battery status in real time; Charging management module: supports three charging methods: on-board charging, photovoltaic charging, and mains charging, and is used to transmit electricity from different sources to the energy storage module; Voltage control module: used to stabilize the input voltage, supports wide voltage input, and adopts PID control algorithm and CC-CV charging algorithm to ensure stable charging of the system under different input voltage conditions; Output control module: includes a DC-DC converter and an AC inverter, used to convert the electrical energy of the energy storage module into different voltage outputs to meet the power requirements of the RV equipment; Multifunctional universal interface module: provides multiple interface types (such as USB, Type-C, two-hole socket, etc.), and automatically identifies the interface type and matches the output voltage; Intelligent control module: used to coordinate the work of various modules in the system to achieve charge and discharge management, energy management, load identification and safety protection functions; Human-computer interaction module: used to display system status information and provide a user operation interface.

[0033] With the energy storage module as the core, combined with the charging management module, output control module, multi-functional universal interface module, voltage control module, intelligent control module and human-computer interaction module, it realizes energy collection, storage, conversion and distribution to meet the diverse power needs of RVs in different scenarios.

[0034] Example 2 The intelligent energy storage system for RVs provided in Example 1 is further optimized. Specifically, Figure 1 and Figure 2As shown, the energy storage module utilizes a high-energy-density lithium iron phosphate (LiFePO4) battery pack, with the capacity configured based on the RV's actual power needs (e.g., 5kWh, 10kWh, etc.). An internally integrated battery management system (BMS) monitors the voltage, current, and temperature of individual cells in real time, providing balanced management to prevent overcharging, over-discharging, overcurrent, and overtemperature.

[0035] The battery pack uses BMS to monitor and protect the battery status in real time, thus extending the battery life.

[0036] The energy storage module is connected to the charging management module and the output control module to store electric energy from different charging methods and output corresponding electric energy according to load demand.

[0037] Further, such as Figure 1 and Figure 2 As shown in the figure, the charging management module supports three modes of charging: on-board charging, photovoltaic charging and mains charging.

[0038] On-board charging unit: By connecting to the RV generator, the unstable direct current (10V-32V DC) is transmitted to the voltage control module for step-up or step-down processing to ensure that it is suitable for the charging voltage of the energy storage module.

[0039] Output voltage in: For a stable output voltage, is the input voltage (10V-32V DC), is the conversion efficiency (usually 90%-95%).

[0040] Photovoltaic charging unit: Implementation: Connect photovoltaic panels and optimize photovoltaic energy utilization through maximum power point tracking (MPPT). Use the perturbation and observation (P&O) method or the incremental conductance (INC) method to achieve maximum power point tracking.

[0041] Maximum photovoltaic output power in: is the maximum power, is the maximum power point voltage, is the maximum power point current.

[0042] Mains charging unit: Implementation: Connect to 220V AC mains, use AC-DC conversion circuit for rectification, convert AC power into DC power, and improve efficiency through power factor correction (PFC).

[0043] Module relationship: The charging management module is connected to the energy storage module and the voltage control module to stably transmit the collected electric energy to the energy storage module.

[0044] Example 3 The intelligent energy storage system for RV provided in Example 1 and Example 2 is further optimized, such as Figure 1 and Figure 2 As shown in the figure, in scenarios where the input voltage fluctuates significantly (such as onboard power generation and photovoltaic power generation), the voltage control module is used to ensure stable charging, especially when the input voltage is unstable. Its core function is to stabilize the input voltage through an efficient DC-DC or AC-DC converter.

[0045] Specific implementation: This module supports wide voltage input and can accept input from vehicle-mounted generators (10V-32V DC) and mains power (AC110V-220V). The input voltage is controlled by the following algorithm: Voltage stabilization algorithm: PID (proportional-integral-differential) control algorithm is used to achieve input voltage stabilization. The specific formula is: in, is the output voltage, is the reference voltage, is the input voltage, , are the proportional, integral, and differential coefficients of the PID algorithm. This algorithm ensures voltage stability by adjusting the regulator in real time.

[0046] Example 4 The intelligent energy storage system for RVs provided in Examples 1 and 2 is further optimized. In scenarios where the input voltage is relatively stable (such as mains charging or a circuit that has undergone voltage stabilization), the voltage control module uses the CC-CV charging algorithm: In the constant current stage (CC): when the battery voltage Lower than the set maximum voltage When the constant current stage is entered, the constant current Fast charging, to increase the battery power to nearly full state as soon as possible, and monitor the charging current in real time through the current sensor , adjust the output current of the DC-DC converter to keep it constant .

[0047] Charging current formula: , When the battery voltage near When , switch to constant pressure stage.

[0048] Constant Voltage (CV): When the battery voltage Reach the set maximum voltage When the battery is fully charged, it enters the constant voltage stage, which keeps the battery voltage constant to prevent overcharging. At the same time, the charging current is gradually reduced until charging is completed. The battery voltage is monitored in real time through the voltage sensor. , adjust the output voltage of the DC-DC converter to keep it constant , the charging current gradually decreases until it drops to the set minimum current , charging is complete.

[0049] Charging current formula: .

[0050] Example 5 The intelligent energy storage system for RV provided in Example 1, Example 2, Example 3 and Example 4 is further optimized, such as Figure 1 and Figure 2 As shown, the output control module includes a DC-DC converter and an AC inverter to achieve DC output and AC output; During DC output, the DC-DC buck / boost circuit provides 12V and 24V DC voltages to meet the needs of RV lighting, refrigerators and other equipment; During AC output, the inverter converts DC power into 220V AC power for use in laptops, home appliances and other devices.

[0051] Formula: Inverter efficiency in: is the inverter efficiency; Poutput is the output power; Pinput is the input power.

[0052] The output control module is connected to the energy storage module and the multifunctional universal interface module to convert the electrical energy of the energy storage module into different voltage outputs.

[0053] Further, such as Figure 1 and Figure 2 As shown, the multifunctional universal interface module includes a universal interface (similar to a car cigarette lighter interface), an interface type detection circuit, and a voltage automatic matching circuit.

[0054] Automatic interface type recognition technology is implemented by detecting the electrical characteristics of the interface. The system automatically identifies the type of interface inserted (such as USB, Type-C, two-hole socket, etc.) by detecting the resistance value or voltage signal of the interface, and adjusts the output voltage according to the interface type to achieve intelligent interface adaptation. The specific steps are as follows: Interface detection: When a device is plugged into an interface, the system determines the interface type by detecting the resistance value or voltage signal of the interface.

[0055] For example, the voltage signals of the D+ and D- pins of the USB interface are different from the voltage signals of the CC pin of the Type-C interface.

[0056] Voltage matching: Automatically adjust the output voltage according to the identified interface type.

[0057] Output voltage Where: Vout is the output voltage; Tinterface is the interface type (such as USB, Type-C, two-hole socket, etc.).

[0058] The universal interface module is connected to the output control module to adapt to the needs of different devices.

[0059] Further, such as Figure 1 and Figure 2 As shown, the intelligent control module uses a high-performance MCU (such as the STM32 series). The intelligent control module is responsible for coordinating the various submodules in the system to ensure efficient operation. The intelligent control module includes functions such as charge and discharge management, energy management, load identification, and safety protection. It implements system charge and discharge management and optimizes charging through the constant current constant voltage (CC-CV) algorithm.

[0060] The battery status is monitored in real time through charge and discharge management algorithms (such as the state estimation algorithm) to decide whether to charge or discharge. The algorithm calculates the current SOC (State of Charge) of the battery and adjusts the charging and discharging strategy according to the load demand.

[0061] , in, The battery status at the current time, and are the charge and discharge currents, is the battery capacity, is the time step.

[0062] Load Identification: The system automatically identifies the connected load type and adjusts the transmission current and voltage through PWM. For example, when a low-power device is connected, the system automatically adjusts the output current to avoid wasting energy.

[0063] It can monitor energy flow, dynamically allocate resources, provide overvoltage, overcurrent, overtemperature, and short-circuit protection, and support remote monitoring. You can view system status and adjust parameters through the app. Remote monitoring function is realized through the communication module: the system transmits system status information to the mobile phone APP or Web terminal through Wi-Fi, Bluetooth or 4G communication module. Users can view the system status in real time, control charging and discharging operations, and receive alarm information. The specific steps are as follows: Communication module selection: Wi-Fi, Bluetooth or 4G module is used as the communication module to support remote data transmission.

[0064] Data transmission: System status information (such as battery level and input / output power) is transmitted to the mobile phone app or web terminal through the communication module.

[0065] Remote Control: Users can remotely control the charging and discharging operations of the system through a mobile phone APP or the web, and receive alarm information (such as overvoltage and overcurrent alarms).

[0066] Further, such as Figure 1 and Figure 2 As shown in the figure, the human-computer interaction module includes an LCD display and buttons to display system information (such as battery power and input / output power). Users can switch charging modes or set parameters through buttons.

[0067] The use process of the intelligent energy storage system for RVs provided by the present invention is as follows: The workflow of the RV intelligent energy storage system starts with energy input. First, it obtains electrical energy through three methods: on-board charging, photovoltaic charging, or mains charging: on-board charging transmits unstable direct current (10V-32VDC) to the voltage control module for voltage stabilization by connecting to the RV generator; photovoltaic charging generates electricity by receiving sunlight through photovoltaic panels, and uses the MPPT algorithm to optimize energy utilization before transmitting it to the voltage control module; the electric energy from the RV generator, photovoltaic charging, and mains charging all undergoes the selection of charging mode and preliminary processing of the input power before being input into the voltage control module. For mains charging, the 220V AC mains is converted into direct current through a rectifier and then directly enters the CC-CV charging stage. The stabilized electric energy is transmitted to the energy storage module for storage. The energy storage module uses a lithium iron phosphate battery pack and integrates a battery management system (BMS) to monitor the battery status in real time. It uses the CC-CV charging algorithm for efficient charging management, including the constant current stage (with a constant current charging) and constant voltage stage (maintaining constant voltage charging until the current drops to In addition, the system activates energy recovery mode when the RV brakes or drives downhill, converting kinetic energy into electrical energy and storing it in the energy storage module. The stored electrical energy is converted to multiple voltages, such as 12VDC, 24VDC, and 220VAC, by the output control module. This energy is then output via USB, Type-C, and two-hole sockets, meeting the diverse power needs of RV equipment. The multifunctional universal interface module automatically identifies the interface type (such as USB, Type-C, and two-hole sockets) and matches the output voltage. The intelligent control module monitors battery status and load demand in real time, dynamically adjusting charging and discharging strategies. Remote monitoring is enabled via Wi-Fi, Bluetooth, or 4G communication modules. Users can view system status, control charging and discharging operations, and receive alarm messages via a mobile app or web interface. The human-computer interaction module provides system status display and a user interface via an LCD display and buttons. The system also features multiple safety protection features, rapidly responding to abnormal situations through hardware protection circuits and software protection strategies to ensure safe system operation. Through modular design, the system supports flexible expansion and maintenance. Users can add or replace modules according to their needs to achieve efficient, stable and safe energy storage and distribution, meeting the diverse electricity needs of RV users.

[0068] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0069] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. An intelligent energy storage system for a recreational vehicle, characterized in that: include Energy storage module: used to store electrical energy, using a high-energy-density lithium iron phosphate (LiFePO4) battery pack and integrating a battery management system (BMS) to monitor battery status in real time; Charging management module: supports three charging methods: on-board charging, photovoltaic charging, and mains charging, and is used to transmit electricity from different sources to the energy storage module; Voltage control module: used to stabilize the input voltage, supports wide voltage input, and adopts PID control algorithm and CC-CV charging algorithm to ensure stable charging of the system under different input voltage conditions; Output control module: includes a DC-DC converter and an AC inverter, used to convert the electrical energy of the energy storage module into different voltage outputs to meet the power requirements of the RV equipment; Multifunctional universal interface module: provides multiple interface types (such as USB, Type-C, two-hole socket, etc.), and automatically identifies the interface type and matches the output voltage; Intelligent control module: used to coordinate the work of various modules in the system to achieve charge and discharge management, energy management, load identification and safety protection functions; Human-computer interaction module: used to display system status information and provide a user operation interface.

2. The intelligent energy storage system for a recreational vehicle according to claim 1, characterized in that: The battery management system (BMS) of the energy storage module monitors the voltage, current and temperature of the single battery in real time, and performs balancing management to prevent overcharging, over-discharging, overcurrent and overtemperature.

3. The intelligent energy storage system for a recreational vehicle according to claim 1, characterized in that: The charging management module includes: On-board charging unit: By connecting to the RV generator, it transmits unstable DC power (10V-32V DC) to the voltage control module for voltage stabilization; Photovoltaic charging unit: Optimizes photovoltaic energy utilization through the maximum power point tracking (MPPT) algorithm, and uses the perturbation and observation method (P&O) or incremental conductance method (INC) to achieve maximum power point tracking; Mains charging unit: Converts 220V AC mains power to DC power through an AC-DC conversion circuit and improves efficiency through power factor correction (PFC).

4. The intelligent energy storage system for a recreational vehicle according to claim 1, characterized in that: The voltage control module uses a PID control algorithm to stabilize the input voltage. The specific formula is: in, is the output voltage, is the reference voltage, is the input voltage, , are the proportional, integral, and differential coefficients of the PID algorithm.

5. The intelligent energy storage system for a recreational vehicle according to claim 1, characterized in that: The voltage control module uses the CC-CV charging algorithm to manage battery charging when the input voltage is relatively stable, including: Constant current stage: When the battery voltage Lower than the set maximum voltage When , it enters the constant current stage; Constant voltage stage: When the battery voltage Reach the set maximum voltage When the charging current drops to the set minimum current, the constant voltage charging is maintained. .

6. The intelligent energy storage system for a recreational vehicle according to claim 1, characterized in that: The output control module includes: DC-DC converter: used to provide 12V and 24V DC voltage output to meet the needs of RV lighting, refrigerators and other equipment; AC inverter: used to convert direct current into 220V AC for use in laptops, home appliances and other devices.

7. The intelligent energy storage system for a recreational vehicle according to claim 1, characterized in that: The multifunctional universal interface module automatically identifies the interface type by detecting the electrical characteristics (such as resistance value and voltage signal) of the inserted interface, and adjusts the output voltage according to the interface type.

8. The intelligent energy storage system for a recreational vehicle according to claim 1, characterized in that: The intelligent control module uses a state estimation algorithm to monitor the battery status in real time and adjust the charging and discharging strategy according to the load demand. The specific formula is: ， in, The battery status at the current time, and are the charge and discharge currents, is the battery capacity, is the time step.

9. The intelligent energy storage system for a recreational vehicle according to claim 1, characterized in that: The human-computer interaction module includes an LCD display and buttons, which are used to display system status information (such as battery power, input / output power), provide a user operation interface, and support remote monitoring functions.

10. The intelligent energy storage system for a recreational vehicle according to claim 1, characterized in that: The system supports the following optimization processes: Optimization of the mains charging process: In the mains charging scenario, the input voltage is converted to DC power by the rectifier and then directly enters the CC-CV charging algorithm stage; Optimization of on-board power generation and photovoltaic power generation processes: In on-board power generation and photovoltaic power generation scenarios, the voltage control module uses a PID control algorithm to stabilize the input voltage and then enters the CC-CV charging algorithm stage; Intelligent control strategy optimization: Through state estimation algorithm and PWM to adjust the transmission current and voltage, efficient energy utilization and intelligent management of equipment are achieved.

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