New energy outdoor integrated power supply hub system

Abstract

The application provides a new energy outdoor integrated power supply hub system, and relates to the technical field of new energy power supply. An audio semantic analysis unit extracts audio stream envelope energy features in real time, predicts transient power pulses and splits them into detection leading pulses and main working pulses. A human ear hearing threshold matching module, taking human ear sound quality loss as a prerequisite, phase-locks modulates the audio stream, synchronizes its transient power with the vehicle discharge protection window, and uses the phase-locked synchronization relationship between the voice coil back electromotive force and the transient pulse to realize in-situ energy self-supply. A vehicle end interaction unit switches to a dynamic time domain slice bottom control mode when communication is interrupted, adaptively divides the alternating current cycle into a pre-charging energy storage area, a dynamic characteristic mask area and an energy backfill area. The application realizes the deep cooperation between the audio system and the vehicle discharge interface in the outdoor scene, and ensures the continuity of power supply and the efficient circulation of energy.

Description

Technical Field

[0001] This invention relates to the field of new energy power supply technology, specifically to a new energy outdoor integrated power supply central system. Background Technology

[0002] When a new energy vehicle discharges power to outdoor audio equipment, its fixed electrical protection window has an inherent conflict with the transient high-power pulses of the audio signal, which can easily trigger the protection and cause a power outage.

[0003] In existing technologies, there is an inherent conflict between the transient high-power pulses of audio signals and the fixed electrical protection window of the vehicle's discharge interface. These transient pulses easily trigger the vehicle's protection mechanism, leading to power outages. The back electromotive force generated by the speaker voice coil during the downward phase of the audio signal is typically discharged to ground via a freewheeling diode in existing technologies, dissipating as heat. This fails to utilize the phase relationship between the back electromotive force and the transient pulse for energy recovery, resulting in low overall system efficiency. When the vehicle communication network is interrupted, protocols are incompatible, or the vehicle does not provide a communication interface, the system cannot obtain discharge parameters in real time. It lacks a fallback mechanism that can adaptively adjust the power supply strategy in the absence of communication, making it difficult to ensure continuous and safe power supply under abnormal operating conditions. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a new energy outdoor integrated power supply central system, comprising: The audio semantic analysis unit is used to extract the envelope energy features of the audio stream to be played in real time, predict the transient power pulse time-domain amplitude parameters, split them into a detection preamble pulse and a main working pulse, and synchronously generate a standardized load feature synchronization frame and a dual-source synchronous power supply command. The vehicle-side interaction unit is used for two-way interaction with external new energy vehicles through the vehicle-mounted communication link; The audio semantic analysis unit has a built-in human hearing threshold matching module. It performs phase-locked modulation of the transient envelope of the audio stream to be played with the external discharge protection safety window of the new energy vehicle, so that the start and end times and the rise slope of the transient power pulse of the modulated audio stream fall completely within the external discharge protection safety window of the new energy vehicle. At the same time, it modulates the downlink timing phase of the audio stream signal, so that the peak time of the back electromotive force generated by the voice coil in the audio drive circuit is completely phase-locked and synchronized with the peak time of the transient power pulse within the same audio period. The AC inverter control unit includes an inverter bridge management module, which is used to dynamically reconstruct the system's equivalent input impedance based on feedback data from the probe preamble pulse; The reverse electromotive force collection and control unit is used to monitor the current direction and induced voltage parameters of the voice coil in the audio drive circuit, perform in-situ energy storage control of the voice coil inductive energy, and block the leakage path of inductive energy to the ground wire; physical control coupling is achieved through DC intermediate link, so that the inductive energy stored in the voice coil in place can be used as the driving energy for the transient peak power of the audio drive circuit. The cross-load energy distribution unit is used to perform power supply switching and power distribution control of the audio drive circuit according to the dual-source synchronous power supply command; it is used to connect to the external new energy vehicle discharge interface and complete the bidirectional interaction of standardized load characteristic synchronization frames on the vehicle end through the vehicle communication link.

[0005] As a further technical solution, the audio semantic analysis unit is equipped with a real-time audio feature extraction engine. This engine continuously samples and tracks the envelope of the audio stream to be played, extracts transient envelope energy features, and uses a time-domain waveform prediction algorithm to predict the precise start and end times, rise slope, peak amplitude, and pulse width parameters of the upcoming transient power pulse in the time domain. The audio semantic analysis unit logically decomposes the predicted transient power pulse into a probe preamble and a main working pulse. The time-domain position of the probe preamble leads the main working pulse, and its amplitude has a preset linear ratio to the peak value of the main working pulse. The ratio coefficient is automatically determined based on the dynamic response characteristics of the external new energy vehicle. The system adapts and adjusts to ensure that the output power of the detection preamble pulse is below the threshold perceptible to the human ear, thus not affecting the audible quality of audio playback. The audio semantic analysis unit synchronously generates a standardized load characteristic synchronization frame. The data structure of this frame includes the complete time-domain parameters of the transient power pulse, the equivalent impedance trajectory, and the dual-source synchronous power supply command, providing a precise timing reference for subsequent inverter dynamic reconfiguration, vehicle-side coordination, and in-situ energy storage of the back electromotive force. The audio semantic analysis unit is connected to the AC inverter control unit via a high-speed data cable to achieve microsecond-level signal interaction, ensuring that the reconstruction time of the system's equivalent input impedance precedes the output time of the main working pulse, thus guaranteeing the leading role of impedance reconstruction in terms of timing.

[0006] As a further technical solution, the audio semantic analysis unit incorporates a human hearing threshold matching module. This module, constrained by the absence of sound quality loss within the human audible range, performs phase-locked modulation (PLM) of the transient envelope of the audio stream to be played with the external discharge protection safety window of the new energy vehicle. This module collects the protection window parameters of the external new energy vehicle discharge interface in real time, including the protection action voltage threshold, current threshold, response delay time, and the time-domain width of the protection window. The start and end times and rising edge slope of the audio transient envelope are then compared with the start and end times and rising edge slope of the protection window through a PLM circuit. The feature performs frequency tracking and phase locking, ensuring that the start and end times and rise slope of the transient power pulse of the modulated audio stream fall completely within the external discharge protection safety window of the new energy vehicle, thus avoiding the triggering of vehicle overload protection due to load transient impact. At the same time, the module synchronously modulates the timing phase of the audio stream signal during the downlink period, so that the peak time of the back electromotive force generated by the voice coil in the audio drive circuit during the downlink period is completely phase-locked and synchronized with the peak time of the transient power pulse within the same audio cycle, realizing the in-situ self-supply of transient peak power by the voice coil inductive energy within the same audio cycle.

[0007] As a further technical solution, the AC inverter control unit includes an inverter bridge management module. This module is built based on a digital signal processor and a programmable logic array, and is connected to the audio semantic analysis unit and the vehicle-side interaction unit. Based on the feedback data from the detection preamble pulse sent by the audio semantic analysis unit, the inverter bridge management module collects in real time the voltage drop amplitude, current response slope, and protection action threshold of the external new energy vehicle discharge interface under the action of the detection preamble pulse. It then constructs a real-time protection characteristic mapping model of the external new energy vehicle discharge interface through a load characteristic identification algorithm. Based on this model, the inverter bridge management module calculates the system target equivalent input impedance that matches the upcoming main operating pulse. By adjusting the on-time, dead time, and duty cycle of the switching transistors in the inverter bridge, it dynamically reconstructs the system equivalent input impedance, ensuring that the load characteristics corresponding to the main operating pulse fall completely within the external new energy vehicle discharge protection safety window, thus ensuring a precise match between the steady-state voltage output and the transient load requirements.

[0008] As a further technical solution, the pulse-probing active impedance matching processing rule, which is executed collaboratively by the audio semantic analysis unit and the AC inverter control unit, is implemented as follows: The audio semantic analysis unit identifies the upcoming transient power pulse in the audio stream to be played, and the decomposed detection preamble pulse leads the main working pulse in the time domain. The amplitude of the detection preamble pulse and the peak value of the main working pulse are in a preset linear ratio. This ratio is adaptively adjusted between 1% and 10% according to the dynamic response characteristics of the external new energy vehicle. Furthermore, the output power of the detection preamble pulse is lower than the threshold perceptible to the human ear, so it does not affect audio playback. The sound quality is excellent; the vehicle-side interaction unit detects the output of the preamble pulse and collects the voltage drop amplitude, current response slope and protection action threshold of the external new energy vehicle discharge interface in real time, and constructs a real-time protection characteristic mapping model of the external new energy vehicle discharge interface; based on the real-time protection characteristic mapping model, the AC inverter control unit calculates the system target equivalent input impedance that matches the main working pulse, and completes the dynamic reconstruction of the system equivalent input impedance by adjusting the conduction timing and duty cycle of the switching transistors in the inverter bridge control module, so that the load characteristics corresponding to the main working pulse fall completely within the external new energy vehicle external discharge protection safety window.

[0009] As a further technical solution, the reverse electromotive force collection and control unit monitors the current direction and induced voltage parameters of the voice coil in the audio drive circuit in real time through high-precision current and voltage sensors. When it detects that the audio signal has entered the downlink phase and the voice coil current is flowing in reverse, the unit immediately starts the in-situ energy storage control of inductive energy. The reverse electromotive force collection and control unit blocks the energy discharge path from the voice coil to the ground through a high-speed switching array, and temporarily stores the reverse induced voltage generated by the voice coil in the inductive magnetic field of the voice coil itself, thus completing the in-situ temporary storage of inductive energy and avoiding energy loss in the form of heat. This unit and the cross-load energy distribution unit achieve physical control coupling through a DC intermediate link, so that the inductive energy stored in the voice coil in situ can be directly used as the driving energy for the transient peak power of the audio drive circuit.

[0010] As a further technical solution, the voice coil dual-source complementary power supply processing rule, which is jointly executed by the audio semantic analysis unit, the back electromotive force collection and control unit, and the cross-load energy allocation unit, is specifically implemented as follows: While predicting transient power pulse parameters, the audio semantic analysis unit calculates the generation time, peak amplitude, and duration of the back electromotive force generated by the voice coil during the audio signal's downward phase, based on the inductance parameters of the speaker voice coil, the voltage and current amplitude of the current driving signal, and the voice coil temperature compensation coefficient, and generates a dual-source synchronous power supply command; the back electromotive force collection and control unit monitors the direction of the voice coil current in the speaker drive circuit in real time during the steady-state phase of the audio signal. The induced voltage amplitude is blocked, and the discharge path from the voice coil to the ground is blocked. The reverse induced voltage generated by the voice coil is temporarily stored in the inductance of the voice coil itself, completing the in-situ energy storage and control of inductive energy. When the transient power pulse enters the peak stage, the cross-load energy distribution unit immediately shuts off the path of the audio drive circuit to draw power from the external new energy vehicle discharge interface based on the dual-source synchronous power supply command. At the same time, it opens the direct drive channel between the voice coil and the audio drive circuit, and directly injects the reverse induced energy temporarily stored in the voice coil into the audio drive circuit, completely covering the peak power demand of the transient power pulse, and realizing the in-situ self-supply of the voice coil inductive energy to the transient peak power within the same audio cycle.

[0011] As a further technical solution, the cross-load energy allocation unit executes energy collaborative hedging processing rules. Specifically, the cross-load energy allocation unit collects the pulse width modulation signal status of the LED lighting branch connected in parallel within the control link of the integrated outdoor power supply system for new energy in real time. The LED lighting branch is a non-inductive load power supply branch. When the reverse electromotive force collection and control unit completes the in-situ energy storage of the voice coil and the transient power pulse has not yet arrived, the cross-load energy allocation unit determines whether the LED lighting branch is in the peak energy demand region. If the LED lighting branch is in the conduction period of the pulse width modulation signal, the cross-load energy allocation unit uses DC... The intermediate link injects excess inductive energy stored in the voice coil in situ into the LED lighting branch, replacing the external new energy vehicle discharge interface to power the LED lighting branch. If the LED lighting branch is in the turn-off gap of the pulse width modulation signal, the cross-load energy distribution unit maintains the in-situ energy storage state of the voice coil, waiting for the peak power supply demand of the transient power pulse. The cross-load energy distribution unit dynamically adjusts the input current of the LED lighting branch according to the energy amplitude of the in-situ energy stored in the voice coil, so as to realize the synchronous offset of the inductive energy generated by the audio load and the driving energy required by the lighting load at the physical level, avoiding repeated charging and discharging of energy between the internal energy storage array and the inductive load.

[0012] As a further technical solution, the vehicle-to-vehicle feature synchronization reconstruction processing rule, which is executed collaboratively by the audio semantic analysis unit and the vehicle-side interaction unit, is implemented as follows: The audio semantic analysis unit generates a standardized load feature synchronization frame based on the predicted transient power pulse parameters. The standardized load feature synchronization frame includes the start and end times, peak amplitude, duration, and equivalent impedance parameters of the transient power pulse. The vehicle-side interaction unit sends the standardized load feature synchronization frame in advance to the BMS battery management system and the external discharge inverter control system of the new energy vehicle through the CAN or LIN vehicle communication pin of the external new energy vehicle discharge interface. This allows the new energy vehicle to know in advance the upcoming load transient fluctuation parameters, reserving response time for the output characteristic adjustment of the vehicle-side inverter. The vehicle-side interaction unit receives the external discharge protection adjustment parameters and output characteristic parameters fed back by the new energy vehicle BMS in real time, and synchronizes the external discharge protection adjustment parameters and output characteristic parameters to the AC inverter control unit. This dynamically corrects the output voltage regulation strategy and impedance reconstruction parameters of the AC inverter control unit, achieving full-time-domain synchronous adaptation with the external discharge output characteristics of the new energy vehicle.

[0013] As a further technical solution, the abnormal operating condition fallback handling rules executed by the vehicle-side interaction unit are implemented as follows: When the vehicle-side interaction unit cannot establish an on-board communication link with the new energy vehicle BMS, the new energy outdoor integrated power supply hub system automatically switches to the dynamic time-domain slicing fallback control mode; the vehicle-side interaction unit locks the frequency and zero-crossing point of the external input AC power, and based on the time-domain distribution of the transient power pulse predicted by the audio semantic analysis unit, adaptively divides the single AC cycle into a pre-charge energy storage area, a dynamic feature mask area, and an energy refill area. The start and end times and widths of the three areas are dynamically adjusted according to the transient pulse parameters, without fixed voltage and time division thresholds; in the pre-charge energy storage area, the vehicle-side interaction unit controls the AC inverter control unit to extract excess power from the external new energy vehicle discharge interface and temporarily stores it in the internal energy storage array; in the dynamic feature mask area, it locks the power extraction current of the external new energy vehicle discharge interface and limits the power extraction current to below the protection threshold; in the energy refill area, it refills the energy recovered by the reverse electromotive force collection and control unit into the internal energy storage array, completing the fallback protection for abnormal operating conditions.

[0014] As a further technical solution, the overall all-time-domain collaborative operation processing rules of the new energy outdoor integrated power supply hub system are specifically implemented as follows: the transient power pulse prediction data continuously generated by the audio semantic analysis unit serves as the operating benchmark for the entire link of the new energy outdoor integrated power supply hub system, coordinating the timing of the entire process of system impedance reconstruction, in-situ energy storage, vehicle synchronization, and energy allocation; the reverse electromotive force collection and control unit uses the excess energy stored in the in-situ voice coil as an auxiliary power source in the vehicle-side interaction unit's backup control mode, reducing the frequent charging and discharging requirements of the internal energy storage array; the AC inverter control unit dynamically adjusts the impedance characteristics of the AC bus to provide power to the vehicle... The load characteristic synchronous adaptation and voice coil direct drive power supply provide physical voltage support; the cross-load energy distribution unit automatically sets the power distribution weight between the main external discharge source of the new energy vehicle and the voice coil inductive energy secondary source, as well as the energy distribution weight between the audio drive circuit and the non-inductive load power supply branch, according to the current operating status of the new energy outdoor integrated power supply hub system; when the power of the external new energy vehicle discharge interface drops to a preset level, the entire link of the new energy outdoor integrated power supply hub system enters a low-power collaborative management and control mode, improving the participation of the voice coil in-situ energy storage and the utilization rate of inductive energy, and maximizing the extension of the power supply range of the new energy outdoor integrated power supply hub system.

[0015] As a further technical solution, the non-inductive load power supply branch includes at least one of the following: LED lighting branch, mobile phone charging branch, and portable device power supply branch. Each branch is coupled to the cross-load energy distribution unit through a DC intermediate link to achieve flexible energy scheduling.

[0016] As a further technical solution, the system is also equipped with a scene mode management unit. This scene mode management unit is connected to the audio semantic analysis unit, the cross-load energy allocation unit, the vehicle-side interaction unit, and the lighting control branch signal, and is used to establish differentiated operating parameter templates for different outdoor application scenarios. The scene mode management unit responds to the mode switching command sent by the user via physical buttons or a wireless application terminal, switching between party mode, camping mode, karaoke mode, and performance mode. After completing the mode switching, it synchronously sends out the brightness parameters, color temperature parameters, color strategy, audio priority parameters, external device power supply current limiting parameters, and energy-saving mode trigger parameters for the corresponding mode, thereby realizing unified linkage control between the audio system, lighting system, power management system, and external device power supply system.

[0017] As a further technical solution, the scene mode management unit and the cross-load energy allocation unit work together to execute mode-differentiated power allocation rules. In party mode, the system maintains high-priority power supply to the audio load, while dynamically adjusting the lighting power according to the audio rhythm and performing current limiting control on the power supply branches of external devices. In camping mode, the system prioritizes ensuring basic audio playback and basic lighting power supply, reducing lighting fluctuations and compressing the power available for external devices. In karaoke mode, the system maintains stable priority for the audio load and the pickup device load. In performance mode, the system prioritizes ensuring stable power supply to the audio load and the performance equipment load, and maintains stable lighting output, so as to achieve adaptive configuration of power resources under different scenarios.

[0018] As a further technical solution, the system also includes a data acquisition and adaptive adjustment unit. This unit is used to collect audio feature data, power demand data, ambient temperature and humidity data, light intensity data, user mode switching and parameter adjustment behavior data, device temperature data, and battery power data. It then performs normalization processing, feature extraction, and trend analysis on the collected data. Based on this, the data acquisition and adaptive adjustment unit adaptively adjusts the scene mode, lighting output parameters, external device power supply current limiting parameters, energy-saving mode trigger threshold, and low battery protection strategy according to historical operating results and the current scene status. This improves the system's control accuracy, energy consumption performance, and battery life performance in different outdoor scenarios.

[0019] This invention provides a new energy outdoor integrated power supply central system, which has the following beneficial effects: 1. This invention improves the power supply continuity and system compatibility of outdoor audio playback by real-time prediction and decomposition of transient power pulses of the audio stream to be played, generating detection preamble pulses and main working pulses that match the external discharge protection window.

[0020] 2. This invention solves the problem in the prior art that the dynamic energy of audio systems cannot be autonomously recycled and is forced to be dissipated in the form of heat, thereby improving the overall energy utilization efficiency.

[0021] 3. This invention solves the problem of blind-state loss of control in extreme working conditions such as vehicle communication interruption or protocol incompatibility, where the system cannot obtain discharge parameters and is unable to maintain safe power supply. It improves the system's autonomous adaptability in environments without communication and its fallback protection capability under abnormal working conditions. Attached Figure Description

[0022] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a flowchart illustrating Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the process of Embodiment 2 of the present invention. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] refer to Figure 1 In this embodiment, the new energy outdoor integrated power supply hub system provided by the present invention is applied to a typical outdoor camping party scenario; the system host integrates audio processing, power management, lighting control and communication modules, and is connected to a new energy vehicle with external discharge function through a dedicated interface, which serves as the main power source; at the same time, the system integrates a set of emergency batteries with a nominal voltage of 48 volts and a capacity of 200 watt-hours, which consists of 10 21700 cells, to provide seamless backup when the main power is interrupted.

[0025] After the system is powered on, it first performs an initialization step; for example, the STM32F407 main control unit and the ADSP-21489 audio semantic analysis unit complete a self-test to confirm that the 2.4G wireless connection with the sound system and the Bluetooth BLE5.0 communication with the user's mobile phone are normal; the system enters party mode by default, the initial brightness of the LED lighting is set to 50%, the color temperature is 4000K neutral white, and the energy-saving mode and safety protection function are enabled by default.

[0026] The audio semantic analysis unit continuously analyzes the audio stream in real time at a sampling rate of 48kHz. The audio semantic analysis unit chip performs a Fast Fourier Transform on every 1024 sampling points, using a Hanning window function with a 50% overlap rate, achieving a frequency resolution of 46.875Hz. Through feature extraction, the system calculates the average energy values ​​in real time for low frequencies (20Hz-200Hz), mid frequencies (200Hz-2000Hz), and high frequencies (2000Hz-20000Hz), and performs normalization processing. The rhythm detection module analyzes the peak intervals of low-frequency energy to calculate the number of beats per minute in real time. Rhythm intensity; when an upcoming transient power pulse is detected, the audio semantic analysis unit logically splits it into a detection preamble pulse and a main working pulse; the temporal position of the detection preamble pulse leads the main working pulse, and its amplitude ratio to the peak value of the main working pulse is adaptively adjusted between 1% and 10% according to the dynamic response characteristics of the vehicle; in this embodiment, if an upcoming transient pulse with a peak power of 200W is predicted, the system will then generate a detection preamble pulse with an amplitude of 10W, which corresponds to 5% of the peak value of the main pulse. Its power is far below the threshold that the human ear can perceive and has no impact on the sound quality.

[0027] The human hearing threshold matching module obtains the external discharge protection window parameters from the vehicle battery management system in real time. In this embodiment, the vehicle's overcurrent protection threshold is 10A, and the response delay time is 50ms. To ensure that the audio transient pulse does not trigger the protection, the module modulates the audio transient envelope through a phase-locked loop circuit. Let the rising slope of the original audio transient pulse be k. audio The maximum allowable rise slope of the vehicle protection window is k. protect Then the slope k of the modulated rising edge mod Take k audio With 0.8 times k protect The smaller of the two values; at the same time, by adjusting the timing phase of the audio signal's downlink phase, the peak moment of the back electromotive force generated by the voice coil is precisely aligned with the peak moment of the transient power pulse in the next audio cycle; in this embodiment, through modulation, the 200W transient pulse with an original rise time of 2ms is widened to 5ms to match the vehicle's protection window, ensuring that it falls completely within the safety window.

[0028] The vehicle-side interaction unit sends the standardized load feature synchronization frame generated by the audio semantic analysis unit to the vehicle battery management system via the vehicle controller local area network bus. The frame data includes the start and end times of the upcoming transient power pulse, such as from 10ms to 15ms, the peak amplitude of 200W, the duration of 5ms, and the equivalent impedance of approximately 11.5Ω at 48V. Based on this, the vehicle battery management system adjusts the inverter output characteristics in advance to reserve power margin.

[0029] During the detection preamble pulse output, the AC inverter control unit constructs a real-time protection characteristic mapping model by acquiring the response of the vehicle's discharge interface. When the real-time protection characteristic mapping model feedback shows that under the current 10W detection pulse, the vehicle terminal voltage drops by 0.5V, and the current response slope is 0.2A / μs, the inverter bridge control module calculates that the system target equivalent input impedance matching the upcoming 200W main operating pulse is 11.5Ω. To this end, the module adjusts the duty cycle D of the switching transistors in the inverter bridge according to... Z in =V out ² / (P out Dynamic impedance reconstruction is performed using ×D² to ensure precise matching between the load characteristics corresponding to the main working pulse and the vehicle output characteristics; where Z... in V is the system's equivalent input impedance. out P is the steady-state output voltage of the AC bus. out The power value of the main working pulse is given by , and D is the duty cycle of the switching transistor.

[0030] The reverse electromotive force collection and control unit monitors the current direction of the speaker voice coil in real time. When the audio signal enters the downlink phase, the voice coil current reverses, generating a reverse induced voltage. The unit immediately blocks the discharge path of the voice coil to ground through a high-speed switch array, temporarily storing the energy in the inductive magnetic field of the voice coil itself, thus achieving in-situ energy storage. In this embodiment, based on the voice coil inductance parameter L of 1.5mH and the current drive signal, it is calculated that a reverse electromotive force with a peak amplitude of 12V and a duration of 3ms will be generated during the downlink phase, and approximately 15W·ms of energy will be temporarily stored.

[0031] The cross-load energy allocation unit performs energy scheduling according to the dual-source synchronous power supply command. When the transient power pulse enters the peak stage, which is 200W in this embodiment, the unit shuts off the path to draw power from the vehicle within microseconds and simultaneously opens the voice coil direct drive channel, instantly injecting the 15W·ms inductive energy temporarily stored in place into the drive circuit, covering about 75% of the peak power demand and significantly reducing the instantaneous impact on the main power supply.

[0032] During the transient pulse interval, the reverse electromotive force collection and control unit detects that there is still about 5W·ms of excess energy in the voice coil. At this time, the LED lighting branch connected in parallel to the DC bus is in the conduction cycle of the pulse width modulation signal. This branch consists of 12 RGB LEDs with a total power of 30W. The cross-load energy allocation unit determines that the LED is in the peak energy demand region and then directly injects the excess inductive energy of the voice coil into the LED driver chip of model TLC5957 to provide instantaneous current to the LED instead of the vehicle power supply. If the LED is in the pulse width modulation signal off interval, the unit maintains the voice coil in the in-situ energy storage state and waits for the peak power supply demand of the next audio pulse.

[0033] When the system detects an unexpected interruption in communication with the vehicle's battery management system, it automatically switches to a dynamic time-domain slicing fallback control mode. The vehicle-side interaction unit locks the AC frequency at 50Hz and the zero-crossing point. Based on the transient pulse time-domain distribution predicted by the audio semantic analysis unit, a 20ms AC cycle is dynamically divided into three intervals: a pre-charge energy storage zone (0 to 4ms), a dynamic feature mask zone (4 to 15ms), and an energy refill zone (15 to 20ms). In the pre-charge energy storage zone, the system draws excess energy from the vehicle and temporarily stores it in the internal energy storage capacitor. In the mask zone, the current draw is locked at 8A, which is lower than the vehicle's protection threshold of 10A. In the refill zone, the recovered reverse electromotive force is refilled into the internal energy storage array. This mode ensures continuous power supply under abnormal communication conditions.

[0034] The power management module continuously monitors the vehicle's battery level via the controller area network bus, with a monitoring cycle of 1 second and an accuracy of ±1%. When the vehicle's battery level drops to a preset 20% threshold, the system executes a low battery alarm: the LED lights flash red at a frequency of 1Hz, and a notification is pushed via the Bluetooth application. At the same time, the system automatically reduces the power of non-essential devices, such as some external universal serial bus charging ports, prioritizing the audio system and basic lighting.

[0035] When the main power supply voltage drops below 40V and the corresponding battery level is no more than 20%, the power management module triggers a seamless emergency battery switchover. After the main control unit detects the main power supply disconnection, it immediately drives the MOSFET switch (model IPP60R099P7) to connect the emergency battery circuit while disconnecting the main power supply circuit. During the switching process, a 20000μF supercapacitor connected in parallel to the DC bus provides a buffer, ensuring that the switching delay is less than 50ms, and the audio playback is completely uninterrupted and imperceptible to the user. The 200Wh emergency battery can provide approximately 30 to 60 minutes of battery life for the system under a full load of 120W.

[0036] The energy-saving mode module continuously monitors the system status; when the audio signal strength remains below 10% of the maximum value (i.e., in a silent state) and there is no button operation for more than 30 minutes, the party mode automatically determines the state to be silent; then, the module automatically shuts off the power supply to external devices and LED lighting in sequence, reducing the total power consumption of the system from about 150W during operation to below 60W, a reduction of more than 60%; when the audio signal is detected to be restored, the system reactivates all devices within milliseconds.

[0037] The data acquisition module collects audio power data at a frequency of 100Hz, ambient temperature, humidity, and light intensity data at a frequency of 1Hz, and user key press operation and other behavioral data at a frequency of 10Hz. The temperature sensor is a DS18B20, the humidity sensor is a DHT22, and the light intensity sensor is a BH1750. All data is normalized and used to train and update the adaptive adjustment model. For example, the ARIMA model is used to predict the power demand in the next 5 seconds. Its parameters are automatically tuned by analyzing 100 hours of historical audio power data, and the prediction accuracy can reach ±5%.

[0038] The safety protection module monitors the system status throughout the process; transient voltage suppression diodes at the power input and power management integrated circuits such as the TPS25940 ensure that the circuit can be cut off within 100ms in case of overvoltage greater than 60V, overcurrent greater than 10A, or short circuit; the positive temperature coefficient thermistor embedded in the lifting motor winding triggers protection when the temperature exceeds 45℃; the physical emergency stop button is directly connected in series in the main power switch circuit to ensure that all power can be cut off with one click in an emergency; when Bluetooth communication times out for more than 10 seconds, the system automatically switches to low power mode, but retains the audio and basic lighting functions.

[0039] Through the precise coordination of the above-mentioned units, this system achieves deep coupling between the audio system and the vehicle discharge interface in outdoor scenarios. While ensuring power supply continuity, it significantly improves overall energy efficiency through energy recycling, providing users with an intelligent, safe, reliable and seamless outdoor power experience.

[0040] In Example 2, based on the new energy outdoor integrated power supply hub system, the substantive content of the multi-mode collaborative control of this solution applied to the audio system based on the linkage process of outdoor party scene is further disclosed in detail. In this embodiment, the new energy outdoor integrated power supply hub system, in addition to possessing the aforementioned functions such as audio semantic analysis, vehicle-side interaction, AC inverter control, back electromotive force collection, and cross-load energy allocation, further integrates the usage process of outdoor party scenarios to achieve integrated and coordinated control of scene mode selection, lighting linkage, power distribution, power management, energy-saving control, data acquisition feedback, and safety protection. This embodiment is mainly applicable to application scenarios such as camping parties, outdoor karaoke, temporary performances, and general party activities, as detailed below: After the system is powered on, it first performs an initialization process. The initialization process includes: self-testing the main control unit, audio processing unit, lighting drive branch, power management branch, communication module, and emergency battery; checking whether the power supply status of each module is normal; checking whether the lighting devices, drive devices, and related actuators are in a usable state; checking whether the communication link with the external terminal has been established; and entering the default working state after initialization. In the default working state, the system can be set to party mode, and the basic brightness, basic color temperature, default energy-saving switch status, and default safety protection switch status can be preset. After initialization, the system enters the scene mode selection step. Users can issue mode switching commands via physical buttons or wireless applications. The scene mode management unit switches between party mode, camping mode, karaoke mode, and performance mode based on the received commands. After the mode switch is completed, the scene mode management unit calls the parameter template corresponding to the current mode and uniformly distributes the parameters for lighting brightness, lighting color temperature, color output strategy, speaker power supply priority, external device power supply current limiting strategy, and energy-saving trigger parameters. Among them, party mode is biased towards dynamic rhythm and high lighting interactivity; camping mode is biased towards low brightness, warm color temperature, and low power consumption operation; karaoke mode is biased towards ensuring stable power supply for speakers and microphones; and performance mode is biased towards maintaining continuous power supply for high-brightness lighting and performance equipment. In the audio signal processing steps, the audio semantic analysis unit samples, performs frequency domain analysis, extracts features, and detects rhythm on the received audio stream. Specifically, the audio semantic analysis unit performs a fast Fourier transform on the audio stream to extract energy features in the low, mid, and high frequency bands, and calculates beat intensity information by combining the rhythm peak interval. Based on the extracted audio features, on the one hand, it continues to perform the aforementioned prediction, splitting, phase-locked modulation, and dual-source synchronous power supply control of transient power pulses; on the other hand, it sends the audio rhythm intensity, frequency band proportion, and dynamic change trend to the lighting control branch and scene mode management unit as input parameters for lighting output and scene linkage control.

[0041] In the lighting linkage control step, the lighting control branch adjusts the brightness, color temperature, and color based on the basic parameters of the current scene mode and the audio feature parameters output by the audio semantic analysis unit. When in party mode, the lighting control branch can increase or decrease the brightness according to the intensity of the audio rhythm, and switch different color or color temperature ranges according to the proportion of low, mid, and high frequency energy to form a lighting linkage effect corresponding to the music rhythm. When in camping mode, the lighting control branch maintains a warm color temperature and a lower brightness to reduce frequent fluctuations. When in karaoke mode or performance mode, the lighting control branch prioritizes maintaining lighting stability to reduce visual interference caused by frequent changes. Furthermore, the lighting control branch can group or control multiple lighting units independently to form a linkage lighting effect covering different areas.

[0042] In the lighting linkage control step, the lighting control branch adjusts brightness, color temperature, and color based on the basic parameters of the current scene mode and the audio feature parameters output by the audio semantic analysis unit. When in party mode, the lighting control branch can increase or decrease brightness according to the intensity of the audio rhythm, and switch different color or color temperature ranges according to the proportion of low, mid, and high frequency energy to create a lighting linkage effect corresponding to the music rhythm. When in camping mode, the lighting control branch maintains a warm color temperature and lower brightness to reduce frequent fluctuations. When in karaoke or performance mode, the lighting control branch prioritizes maintaining lighting stability to reduce visual interference caused by frequent changes. Furthermore, the lighting control branch can group or control multiple lighting units independently to create a linkage lighting effect covering different areas.

[0043] In the power allocation step, the cross-load energy allocation unit dynamically allocates the system input power based on the current scene mode parameters, audio power requirements, and external device access status. Preferably, the system maintains priority power supply to the speaker drive circuit to ensure audio playback continuity and sound quality stability; after meeting the power supply requirements of the speaker drive circuit, the remaining power is allocated to the lighting branch and the external device power supply branch. When an increase in audio power demand or an impending transient pulse is detected, the cross-load energy allocation unit preemptively reduces the allocable power of the external device branch; when the system is detected to be in camping mode or a silent low-load state, the reserved power for speakers can be appropriately reduced and the power supply efficiency of basic lighting and low-power devices can be improved. Furthermore, the data acquisition and adaptive adjustment unit can also predict the power demand within a short time window based on historical power data and use the prediction results to adjust the power allocation strategy in advance.

[0044] In the power management process, the vehicle-side interaction unit and the power management branch work together to monitor the power supply status and remaining battery power of external new energy vehicles in real time. The system can set a low battery threshold. When the vehicle's battery power falls below the threshold, the system automatically executes a low battery protection strategy, including reducing the power supply to external devices, limiting unnecessary loads, outputting alarm prompts, and prioritizing the audio and basic lighting branches. If an interruption in the power supply to the external new energy vehicle, an abnormal disconnection of the main power supply, or a continued drop in the vehicle's battery power to the point where it cannot meet the safety power supply requirements is detected, the system switches to emergency battery power supply. During the switching process, a short-term buffer can be achieved using DC bus energy storage devices to reduce voltage fluctuations during the switching process and ensure that audio playback and control logic are not significantly interrupted.

[0045] During the energy-saving mode control process, the system continuously monitors audio signal strength, user button operation status, mode switching status, and external device usage status. When a preset static condition is met, the scene mode management unit triggers energy-saving mode control. The static condition may include: the audio signal strength is continuously below a preset threshold, and no button operation, wireless command input, or external device status change is detected within a preset time. After entering energy-saving mode, the system shuts down or de-rates unnecessary loads in a preset sequence, including external device power supply branches, some lighting branches, and other auxiliary branches, to reduce the total system power consumption. When audio recovery, user operation recovery, or mode switching request is detected again, the system exits energy-saving mode and resumes the corresponding load operation.

[0046] In the data acquisition and feedback step, the data acquisition and adaptive adjustment unit continuously collects multi-dimensional operational data. This multi-dimensional operational data includes audio characteristic data, power demand data, ambient temperature data, ambient humidity data, ambient light data, user mode selection and parameter adjustment behavior data, device status data, and battery power data. The system performs normalization, feature extraction, and trend analysis on the collected data, and updates brightness adjustment parameters, mode recommendation parameters, power supply current limiting parameters, energy-saving trigger thresholds, and low battery protection parameters based on the analysis results. Thus, the system can gradually develop scene-linked control strategies adapted to users' actual usage habits, improving matching accuracy and operational convenience in different scenarios.

[0047] During the safety protection process, the system continuously monitors voltage, current, temperature, communication status, and the operating status of related equipment. When abnormal voltage, current, temperature, short-circuit risk, or critical communication failure is detected, the safety protection module executes corresponding protective actions, including shutting down relevant power supply branches, outputting alarm signals, restricting the continued operation of high-risk loads, and, if necessary, performing a complete shutdown. Furthermore, the system can be equipped with a physical emergency stop switch. When the user triggers the emergency stop switch, the system immediately disconnects high-risk loads and output branches to enhance safety in complex outdoor environments.

[0048] Based on the above implementation methods, the new energy outdoor integrated power supply hub system in this embodiment integrates the process content of scene mode control, lighting control, power distribution, power management, energy-saving mode, data feedback, and safety protection from the disclosure materials into the existing system architecture. This allows the system to not only possess the original audio transient power coordinated power supply and inductive energy recovery capabilities, but also to further enhance multi-scene linkage control capabilities. Therefore, the system can achieve unified coordination of audio, lighting, power supply, and external devices in different outdoor usage scenarios, improving power supply continuity, scene adaptability, energy utilization, and usage safety.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new energy outdoor integrated power supply central system, characterized in that, include: The audio semantic analysis unit is used to extract the envelope energy features of the audio stream to be played in real time, predict the transient power pulse time-domain amplitude parameters, split them into a detection preamble pulse and a main working pulse, and synchronously generate a standardized load feature synchronization frame and a dual-source synchronous power supply command. The vehicle-side interaction unit is used for two-way interaction with external new energy vehicles through the vehicle-mounted communication link; The audio semantic analysis unit has a built-in human hearing threshold matching module. It performs phase-locked modulation of the transient envelope of the audio stream to be played with the external discharge protection safety window of the new energy vehicle, so that the start and end times and the rise slope of the transient power pulse of the modulated audio stream fall completely within the external discharge protection safety window of the new energy vehicle. At the same time, it modulates the downlink timing phase of the audio stream signal, so that the peak time of the back electromotive force generated by the voice coil in the audio drive circuit is completely phase-locked and synchronized with the peak time of the transient power pulse within the same audio period. The AC inverter control unit includes an inverter bridge management module, which is used to dynamically reconstruct the system's equivalent input impedance based on feedback data from the probe preamble pulse; The reverse electromotive force collection and control unit is used to monitor the current direction and induced voltage parameters of the voice coil in the audio drive circuit, perform in-situ energy storage control of the voice coil inductive energy, and block the leakage path of inductive energy to the ground wire; physical control coupling is achieved through DC intermediate link, so that the inductive energy stored in the voice coil in place can be used as the driving energy for the transient peak power of the audio drive circuit. The cross-load energy distribution unit is used to perform power supply switching and power distribution control of the audio drive circuit according to the dual-source synchronous power supply command; it is also used to connect to the external new energy vehicle discharge interface.

2. The new energy outdoor integrated power supply central system according to claim 1, characterized in that: The pulse detection active impedance matching processing rule operation process executed collaboratively by the audio semantic analysis unit and the AC inverter control unit is as follows: The audio semantic analysis unit identifies the upcoming transient power pulse in the audio stream to be played, and the time domain position of the decomposed detection preamble pulse is ahead of the main working pulse. The amplitude of the detection preamble pulse and the peak value of the main working pulse are in a preset linear ratio, and the output of the detection preamble pulse will not affect the sound quality of the audio playback. The vehicle-side interaction unit detects the output of the preamble pulse and collects the voltage drop amplitude, current response slope, and protection action threshold of the external new energy vehicle discharge interface in real time, constructing a real-time protection characteristic mapping model of the external new energy vehicle discharge interface. Based on the real-time protection characteristic mapping model, the AC inverter control unit calculates the system target equivalent input impedance matching the main working pulse, and dynamically reconstructs the system equivalent input impedance by adjusting the conduction timing and duty cycle of the switching transistors in the inverter bridge control module, so that the load characteristics corresponding to the main working pulse fall completely within the external new energy vehicle external discharge protection safety window.

3. The new energy outdoor integrated power supply central system according to claim 1, characterized in that: The operation process of the voice coil dual-source complementary power supply processing rule, jointly executed by the audio semantic analysis unit, the back electromotive force collection and control unit, and the cross-load energy allocation unit, is as follows: While predicting transient power pulse parameters, the audio semantic analysis unit, based on the inductance parameters of the speaker voice coil and the current drive signal, accurately calculates the generation time, peak amplitude, and duration of the back electromotive force generated by the voice coil during the downward phase of the audio signal, and generates a dual-source synchronous power supply command; the back electromotive force collection and control unit, during the steady-state phase of the audio signal, monitors the voice coil current direction of the speaker drive circuit in real time. The reverse induced voltage amplitude is controlled, blocking the discharge path of the voice coil to ground. The reverse induced voltage generated by the voice coil is temporarily stored in the inductance of the voice coil itself, completing the in-situ energy storage and control of inductive energy. When the transient power pulse enters the peak stage, the cross-load energy distribution unit immediately shuts off the path of the audio drive circuit to draw power from the external new energy vehicle discharge interface based on the dual-source synchronous power supply command. At the same time, it opens the direct drive channel between the voice coil and the audio drive circuit, directly injecting the reverse induced energy temporarily stored in the voice coil into the audio drive circuit, completely covering the peak power demand of the transient power pulse.

4. The new energy outdoor integrated power supply central system according to claim 3, characterized in that: The energy coordination and offsetting processing rule executed by the cross-load energy allocation unit operates as follows: The cross-load energy allocation unit collects the pulse width modulation signal status of the LED lighting branch connected in parallel within the system control link in real time. The LED lighting branch belongs to the non-inductive load power supply branch. When the reverse electromotive force collection and control unit completes the in-situ energy storage of the voice coil and the transient power pulse has not yet arrived, the cross-load energy allocation unit determines whether the LED lighting branch is in the peak energy demand region. If the LED lighting branch is in the conduction period of the pulse width modulation signal, the cross-load energy allocation unit injects the excess inductive energy stored in the in-situ voice coil into the LED lighting branch, replacing the external new energy vehicle discharge interface to power the LED lighting branch. If the LED lighting branch is in the off interval of the pulse width modulation signal, the cross-load energy allocation unit maintains the in-situ energy storage state of the voice coil and waits for the peak power supply demand of the transient power pulse. The cross-load energy distribution unit dynamically adjusts the input current of the LED lighting branch based on the energy amplitude of the in-situ energy stored in the voice coil, thereby achieving synchronous offsetting of the inductive energy generated by the audio load and the driving energy required by the lighting load at the physical level.

5. The new energy outdoor integrated power supply central system according to claim 1, characterized in that: The process of vehicle feature synchronization reconstruction, jointly executed by the audio semantic analysis unit and the vehicle-side interaction unit, is as follows: Based on the predicted transient power pulse parameters, the audio semantic analysis unit generates a standardized load feature synchronization frame, which includes the start and end times, peak amplitude, duration, and equivalent impedance parameters of the transient power pulse. The vehicle-side interaction unit sends the standardized load feature synchronization frame in advance to the BMS battery management system and external discharge inverter control system of the new energy vehicle through the CAN / LIN vehicle communication pin of the external new energy vehicle discharge interface, so that the new energy vehicle can know the upcoming load transient fluctuation parameters in advance. The vehicle-side interaction unit receives the external discharge protection adjustment parameters and output characteristic parameters fed back by the new energy vehicle BMS in real time, and synchronizes the external discharge protection adjustment parameters and output characteristic parameters to the AC inverter control unit, dynamically correcting the output voltage regulation strategy and impedance reconstruction parameters of the AC inverter control unit, forming a full-time-domain synchronous adaptation with the external discharge output characteristics of the new energy vehicle.

6. A new energy outdoor integrated power supply central system according to claim 5, characterized in that: When the vehicle-side interaction unit fails to establish communication with the new energy vehicle BMS, the system automatically switches to the dynamic time-domain slicing fallback control mode. The vehicle-side interaction unit locks the AC frequency and zero-crossing point, and based on the transient power pulse time-domain distribution predicted by the audio semantic analysis unit, dynamically divides the single AC cycle into a pre-charge energy storage area, a dynamic feature mask area, and an energy backfill area. The start and end times and widths of the three intervals are adjusted in real time according to the transient pulse parameters, without fixed thresholds. In the pre-charge energy storage area, excess power is pre-retrieved and temporarily stored. In the dynamic feature mask area, the power extraction current is locked. In the energy backfill area, the recovered reverse electromotive force is backfilled into the energy storage array.

7. The new energy outdoor integrated power supply central system according to claim 1, characterized in that: The processing rules for full-time collaborative operation include: the transient power pulse prediction data continuously generated by the audio semantic analysis unit serves as the operating benchmark for the entire system link, coordinating the timing of the entire process of system impedance reconstruction, in-situ energy storage, vehicle synchronization, and energy allocation; the reverse electromotive force collection and control unit uses the excess energy stored in the in-situ voice coil as an auxiliary power source in the vehicle-side interaction unit's fallback control mode, reducing the frequent charging and discharging requirements of the internal energy storage array; the AC inverter control unit provides physical voltage support for vehicle characteristic synchronization adaptation and voice coil direct drive power supply by dynamically adjusting the impedance characteristics of the AC bus; the cross-load energy allocation unit automatically sets the power distribution weight between the main external discharge source of the new energy vehicle and the inductive energy secondary source of the voice coil, as well as the energy distribution weight between the audio drive circuit and the non-inductive load power supply branch, according to the current operating status of the system; when the power of the external new energy vehicle discharge interface drops to a preset level, the entire system link enters a low-power collaborative control mode, improving the participation of the in-situ voice coil energy storage and the utilization rate of inductive energy, maximizing the extension of the system's power supply range.

8. The new energy outdoor integrated power supply central system according to claim 1, characterized in that: The non-inductive load power supply branch includes at least one of the following: LED lighting branch, mobile phone charging branch, and portable device power supply branch; the vehicle-side interaction unit is compatible with the communication protocols and electrical specifications of the national standard, American standard, and European standard new energy vehicle external discharge interface, and is suitable for all passenger new energy vehicles with external discharge function.

9. A new energy outdoor integrated power supply central system according to claim 1, characterized in that: The system is also equipped with a scene mode management unit, which is used to respond to the mode switching command issued by the user via physical button or wireless application terminal, and switch between party mode, camping mode, karaoke mode and performance mode. After mode switching, the audio drive priority, lighting brightness, color temperature, color output strategy, external device power supply current limiting strategy, and energy-saving control parameters are adjusted synchronously to achieve linkage control between the audio system, lighting system, power management system, and external device power supply system. The scene mode management unit and the cross-load energy allocation unit work together to execute differentiated power allocation strategies in different scene modes. Specifically, in party mode, the allocation follows the rule of prioritizing audio load, followed by lighting load, and limiting the power supply to external devices. In camping mode, the allocation follows the rule of prioritizing audio load and basic lighting load, and limiting the power supply to external devices. In karaoke mode, the allocation follows the rule of prioritizing audio load and microphone load. In performance mode, the allocation follows the rule of prioritizing audio load and performance equipment load.

10. A new energy outdoor integrated power supply central system according to claim 1 or 9, characterized in that: The system also includes a data acquisition and adaptive adjustment unit, which is used to collect audio feature data, power demand data, environmental data, user operation behavior data and device status data, and adaptively adjust scene modes, lighting output parameters, external device power supply current limiting parameters, energy-saving mode trigger thresholds and low power protection strategies based on the collected data, so as to improve the linkage control accuracy and battery life under different outdoor use scenarios.

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