High-voltage direct-hanging energy storage equipment and energy management processing method thereof

Abstract

The embodiment of the invention discloses high-voltage direct-hanging energy storage equipment and an energy management processing method thereof.The energy management processing method of the high-voltage direct-hanging energy storage equipment comprises the steps that working data of a plurality of subsystems and on-off signal data of a plurality of dry contacts are obtained, and the working data of the subsystems are from the subsystems; the plurality of dry contact on-off signal data are from the plurality of dry contacts; performing time mark alignment processing on the plurality of subsystem working data and the plurality of dry contact on-off signal data so as to unify the timestamps of the plurality of subsystem working data and the timestamps of the plurality of dry contact on-off signal data to the same time reference; and outputting the plurality of subsystem working data and the plurality of dry contact on-off signal data which are subjected to the time mark alignment processing to external equipment. According to the energy management processing method of the high-voltage direct-hanging energy storage equipment, the technical problem that the high-voltage direct-hanging energy storage equipment is inconvenient to manage due to data islanding of each subsystem in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage direct plug-in energy storage, and in particular to a high-voltage direct plug-in energy storage device and an energy management processing method thereof. BACKGROUND

[0002] The high-voltage direct plug-in energy storage technology is a kind of energy storage technology that directly connects the energy storage device to the high-voltage power system. It does not need to go through multiple voltage conversions, and omits the transformer step-up and step-down links, thereby reducing the loss in the energy conversion process and improving the efficiency of the system, and realizing efficient storage and release of electric energy.

[0003] In related technologies, with the continuous improvement of the complexity and installed capacity of the high-voltage direct plug-in energy storage device, the data islanding problem of each subsystem of the high-voltage direct plug-in energy storage device gradually becomes prominent. When the high-voltage direct plug-in energy storage device is in use, it is difficult to uniformly and efficiently manage the real-time running state of each subsystem, and it needs to rely heavily on manual monitoring.

[0004] It can be seen that the high-voltage direct plug-in energy storage device in the related technology has the technical problem of inconvenient management of the high-voltage direct plug-in energy storage device due to the data islanding of each subsystem. In view of the above problems, no effective solution has been proposed so far.

[0005] The above information disclosed in the background section is only used to enhance the understanding of the background of the technology described herein. Therefore, the background may contain some information that is not known to those skilled in the art as prior art. SUMMARY

[0006] The embodiments of the present application provide a high-voltage direct plug-in energy storage device and an energy management processing method thereof, to at least solve the technical problem of inconvenient management of the high-voltage direct plug-in energy storage device due to the data islanding of each subsystem in the related technology.

[0007] According to a first aspect of the embodiments of the present application, an energy management processing method of a high-voltage direct plug-in energy storage device is provided, comprising: acquiring a plurality of subsystem working data and a plurality of dry contact on-off signal data, the plurality of subsystem working data coming from a plurality of subsystems, and the plurality of dry contact on-off signal data coming from a plurality of dry contacts; performing time stamp alignment processing on the plurality of subsystem working data and the plurality of dry contact on-off signal data, to unify the time stamps of the plurality of subsystem working data and the time stamps of the plurality of dry contact on-off signal data to the same time reference; and outputting the plurality of subsystem working data and the plurality of dry contact on-off signal data that have undergone the time stamp alignment processing to an external device.

[0008] Further, the plurality of subsystems include at least one of: an energy storage converter, a battery energy management system, a water cooling system, an air conditioning system, a fire extinguishing system, and an alarm system; and / or the external device includes a human-computer interaction terminal and / or a central control room.

[0009] Further, the obtaining of the plurality of subsystem working data and the plurality of dry contact on-off signal data includes: repeatedly collecting the subsystem working data corresponding to each subsystem at a preset time period; and / or the obtaining of the plurality of subsystem working data and the plurality of dry contact on-off signal data includes: collecting the dry contact on-off signal data corresponding to each dry contact through an optoelectronic isolation circuit.

[0010] Further, the energy management processing method of the high-voltage direct-hanging energy storage device further includes: generating a control instruction based on the plurality of subsystem working data and the plurality of dry contact on-off signal data that have been time-aligned, using a preset logic or machine learning technology; and controlling the subsystem and / or the dry contact according to the control instruction.

[0011] Further, the energy management processing method of the high-voltage direct-hanging energy storage device includes: in the case of determining a dry contact fault, controlling the plurality of dry contacts to execute a preset action sequence, the execution priority of the preset action sequence being higher than that of a manual operation instruction; wherein the dry contact fault includes at least one of: an open circuit of a signal line, a ground short circuit, and a dry contact contact resistance greater than a preset resistance value.

[0012] Further, the plurality of subsystems include an energy storage converter, a battery energy management system, and an alarm system, and in the case of determining a fault of the energy storage converter and / or the battery energy management system, the energy management processing method of the high-voltage direct-hanging energy storage device includes at least one of: controlling the energy storage converter to shut down, and disconnecting a direct-current side contactor between the energy storage converter and the battery energy management system; controlling the alarm system to issue a fault alarm signal; and sending fault data to an external device, the fault data including running data of the high-voltage direct-hanging energy storage device within a preset time period before the fault and / or real-time running data of the high-voltage direct-hanging energy storage device.

[0013] Further, the plurality of subsystems include an energy storage converter, a battery energy management system, a fire extinguishing system, an alarm system, and an air conditioning system, and in the case of determining a fire accident, the energy management processing method of the high-voltage direct-hanging energy storage device includes at least one of: controlling the fire extinguishing system to start fire sprinkling, and disconnecting a direct-current side contactor between the energy storage converter and the battery energy management system; controlling the alarm system to issue a fire alarm signal; controlling the air conditioning system to supply air to a preset area, so that the air pressure in the preset area is higher than that in the surrounding area, to prevent smoke from the surrounding area from invading the preset area; and sending fire data to an external device, the fire data including fire evolution data and device action sequence data.

[0014] Further, the plurality of subsystems include an energy storage converter, a battery energy management system, and an air conditioning system, and the energy management processing method of the high-voltage direct-hanging energy storage device includes: acquiring a junction temperature of a power module of the energy storage converter and / or a cell temperature of the battery energy management system; and controlling a compressor frequency and / or an air volume of the air conditioning system, so that the junction temperature of the power module of the energy storage converter is in a first target temperature range and / or the cell temperature of the battery energy management system is in a second target temperature range.

[0015] According to a second aspect of the embodiments of the present application, a high-voltage direct-hanging energy storage device is also provided, which includes a central controller and a stored program, and the central controller executes the energy management processing method of the high-voltage direct-hanging energy storage device when running the program.

[0016] Further, the high-voltage direct-hanging energy storage device includes: a plurality of subsystems and a plurality of dry contacts; a switch connected in communication with the central controller; a multi-protocol communication module connected in communication with the switch and the plurality of subsystems; and a dry contact signal acquisition module connected in communication with the switch and the plurality of dry contacts; and an external communication module connected in communication with the switch, and configured to communicate with an external device.

[0017] The energy management processing method of the high-voltage direct-hanging energy storage device includes: acquiring a plurality of subsystem working data and a plurality of dry contact on-off signal data, the plurality of subsystem working data being from the plurality of subsystems, and the plurality of dry contact on-off signal data being from the plurality of dry contacts; performing time stamp alignment processing on the plurality of subsystem working data and the plurality of dry contact on-off signal data, so that the time stamps of the plurality of subsystem working data and the time stamps of the plurality of dry contact on-off signal data are unified to the same time reference; and outputting the plurality of subsystem working data and the plurality of dry contact on-off signal data subjected to the time stamp alignment processing to an external device. By collecting the plurality of subsystem working data and the plurality of dry contact on-off signal data, and performing time stamp alignment processing on the plurality of subsystem working data and the plurality of dry contact on-off signal data, the time stamps of the plurality of subsystem working data and the time stamps of the plurality of dry contact on-off signal data are unified to the same time reference, realizing the unification and availability of multi-source data. The correlation failure problem caused by the inconsistency of time references of different sources is avoided, and a complete data set with time unification is finally output, providing a reliable data basis for subsequent data analysis, event tracing, and state monitoring, thereby facilitating the management of the high-voltage direct-hanging energy storage device, and solving the technical problem of inconvenient management of the high-voltage direct-hanging energy storage device due to the data islanding of each subsystem in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings: Figure 1 A flowchart of an energy management processing method of a high-voltage direct-hanging energy storage device provided for an embodiment of the present application; Figure 2 A schematic diagram of a high-voltage direct-hanging energy storage device provided for an embodiment of the present application; Figure 3 A schematic diagram of an energy management system of a high-voltage direct-hanging energy storage device provided for an embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should fall within the protection scope of the present application.

[0020] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation portal for user to choose authorization or refusal. The terms "first", "second" and the like in the specification and claims and drawings of the present application are used to distinguish different objects, rather than to limit a specific order.

[0021] Figure 1 The energy management processing method of the high-voltage direct-hanging energy storage device according to the embodiment of the present application, as shown in Figure 1 includes the following steps: Step S102, acquiring a plurality of subsystem operating data and a plurality of dry contact on-off signal data, the plurality of subsystem operating data coming from a plurality of subsystems, and the plurality of dry contact on-off signal data coming from a plurality of dry contacts; Step S104, performing time scale alignment processing on the plurality of subsystem operating data and the plurality of dry contact on-off signal data, so as to unify the timestamps of the plurality of subsystem operating data and the timestamps of the plurality of dry contact on-off signal data to the same time reference; In step S106, the multiple subsystem working data and the multiple dry contact on-off signal data after the time stamp alignment processing are output to an external device.

[0022] The energy management processing method of the high-voltage direct-hanging energy storage device includes: acquiring multiple subsystem working data and multiple dry contact on-off signal data, the multiple subsystem working data being from multiple subsystems, and the multiple dry contact on-off signal data being from multiple dry contacts; performing time stamp alignment processing on the multiple subsystem working data and the multiple dry contact on-off signal data to unify the time stamps of the multiple subsystem working data and the time stamps of the multiple dry contact on-off signal data to the same time reference; and outputting the multiple subsystem working data and the multiple dry contact on-off signal data after the time stamp alignment processing to an external device. Through the acquisition of the multiple subsystem working data and the acquisition of the multiple dry contact on-off signal data, and the time stamp alignment processing on the multiple subsystem working data and the multiple dry contact on-off signal data, the time stamps of the multiple subsystem working data and the time stamps of the multiple dry contact on-off signal data are unified to the same time reference, realizing the unification and availability of multiple source data. The correlation failure problem caused by the inconsistency of time references of different sources is avoided, and finally a complete data set with time unification is output, providing a reliable data basis for subsequent data analysis, event tracing, and state monitoring, thereby facilitating the management of the high-voltage direct-hanging energy storage device, and solving the technical problem of inconvenient management of the high-voltage direct-hanging energy storage device due to the data islanding of each subsystem in the related art.

[0023] In actual implementation, the subsystem working data can be flexibly selected according to the specific type and management requirements of the subsystem. For example, the multiple subsystem working data and the multiple dry contact on-off signal data include: electrical operation data and dry contact control signals collected by a power conversion system (PCS), battery state information and dry contact control signals of a battery management system (BMS), temperature / flow data and pump valve dry contact signals of a thermal management water cooling system, working condition information and dry contact control signals of a high-voltage direct-hanging energy storage system air conditioner, alarm state information and linkage dry contact control signals of a fire protection system, alarm state information and linkage dry contact control signals of an alarm system, and other subsystem devices with communication interfaces / dry contacts.

[0024] In a specific embodiment, the plurality of subsystems include at least one of the following: an energy storage converter, a battery energy relationship system, a water cooling system, an air conditioning system, a fire fighting system, an alarm system; and / or, the external device includes a human-computer interaction terminal and / or a central control room, the human-computer interaction terminal facilitates on-site understanding of the working state of the high-voltage direct-hanging energy storage device and / or control thereof, and the central control room can remotely monitor the high-voltage direct-hanging energy storage device.

[0025] In the embodiment, the plurality of subsystem working data and the plurality of dry contact on-off signal data are acquired, including: repeatedly collecting the subsystem working data corresponding to each subsystem at a preset time period, for example, the central controller as a Modbus TCP master station, polling and collecting the data of each slave station at a period of ≤10 ms, and acquiring the plurality of subsystem working data and the plurality of dry contact on-off signal data from each slave station. The plurality of subsystem working data and the plurality of dry contact on-off signal data are acquired, including: collecting the dry contact on-off signal data corresponding to each dry contact through an optoelectronic isolation circuit. In the embodiment, in order to improve the safety of dry contact on-off signal data acquisition, an optoelectronic isolation circuit is used for signal data acquisition during the acquisition of the plurality of dry contact on-off signal data, for example, as a specific embodiment, a 2500V voltage-resistant optoelectronic isolation circuit is used to collect the dry contact on-off signal data.

[0026] In some preferred embodiments, the energy management processing method of the high-voltage direct-hanging energy storage device further includes: based on the plurality of subsystem working data and the plurality of dry contact on-off signal data processed through time scale alignment, generating a control instruction using a preset logic or machine learning technology; and controlling the subsystem and / or the dry contact according to the control instruction. The above-mentioned data processed through time scale alignment can accurately reflect the running state of the high-voltage direct-hanging energy storage device, and the control instruction determined based on these data can more accurately and efficiently control the high-voltage direct-hanging energy storage device, not only realizing the automatic control of the high-voltage direct-hanging energy storage device, but also being conducive to improving the control accuracy, so that the high-voltage direct-hanging energy storage device runs more stably.

[0027] As an optional embodiment, the energy management processing method for high-voltage direct-connected energy storage equipment includes: upon determining a dry contact fault, controlling multiple dry contacts to execute a preset action sequence, where the execution priority of the preset action sequence is higher than that of manual operation commands; wherein, the dry contact fault includes at least one of the following: open circuit of signal line, short circuit to ground, or contact resistance of dry contact exceeding a preset resistance value. For example, in a specific embodiment, the closed state of a normally closed (NC) contact is defined as the equipment operation signal, and the open state as the equipment shutdown signal. The open state of a normally open (NO) contact is defined as the equipment operation signal, and the closed state as the equipment shutdown signal. When an open circuit of signal line, short circuit to ground, or contact resistance > 10Ω is detected, the central controller is triggered to execute a safety failure action sequence (i.e., the aforementioned preset action sequence). The completion time of all safety failure actions is < 500ms, and their priority overrides that of manual operation commands. By controlling multiple dry contacts to execute a preset action sequence when a dry contact fault is detected, automated handling of dry contact faults can be achieved, enabling timely processing of dry contact faults and improving the operational safety of high-voltage direct-connected energy storage equipment.

[0028] In this embodiment, multiple subsystems include an energy storage converter, a battery energy management system, and an alarm system. When a fault is determined in the energy storage converter and / or the battery energy management system, the energy management processing method for the high-voltage direct-connected energy storage device includes at least one of the following: controlling the energy storage converter to shut down and disconnecting the DC-side contactor between the energy storage converter and the battery energy management system; controlling the alarm system to issue a fault alarm signal; and sending fault data to external devices. The fault data includes the operating data of the high-voltage direct-connected energy storage device within a preset time period before the fault and / or the real-time operating data of the high-voltage direct-connected energy storage device. This allows for rapid response to faults in the energy storage converter and / or the battery energy management system, automatically and promptly handling emergencies, and sending fault-related data to external devices for subsequent fault tracing, effectively improving the operational safety of the high-voltage direct-connected energy storage device.

[0029] For example, in one specific embodiment: When a fault is detected in the energy storage converter (PCS), the central controller performs three-level safety interlock actions: (1) Immediately stop the PCS operation: send an emergency stop command (response ≤ 50ms) and disconnect the DC side contactor; (2) Cut off the energy transmission path: disconnect the DC contactor between the BMS and the PCS and activate the battery cluster pre-charge resistor discharge circuit; (3) Trigger a full-domain safety alarm: start the sound and light alarm system (sound pressure ≥ 90dB@1m, flash frequency ≥ 2Hz); (4) Fault data tracing: extract the operation event sequence log 5 minutes before the fault and transmit it to the central control room through the remote fiber optic communication module. The data packet contains the fault code, real-time energy efficiency spectrum and protection action timestamp.

[0030] When the battery energy management system (BMS) fails, the central controller performs the following safety interlocking actions: (1) emergency shutdown control: sends an emergency shutdown instruction to the energy storage converter (PCS) (response time ≤ 50 ms) and cuts off the DC contactor between the BMS and the PCS; (2) global safety alarm: triggers the audible and light alarm system; (3) fault data tracing: real-time transmission of encrypted data packets to the central control room through the remote fiber communication module, the data packets containing millisecond-level timestamp operation event sequence and energy efficiency state snapshot.

[0031] In the present embodiment, the plurality of subsystems include an energy storage converter, a battery energy management system, a fire extinguishing system, an alarm system and an air conditioning system. In the case of determining that a fire accident occurs, the energy management processing method of the high-voltage direct-hanging energy storage device includes at least one of the following: controlling the fire extinguishing system to start the fire sprinkling, disconnecting the DC side contactor between the energy storage converter and the battery energy management system; controlling the alarm system to issue a fire alarm signal; controlling the air conditioning system to supply air to the preset area, so that the air pressure of the preset area is higher than that of the surrounding area, so as to prevent the smoke gas of the surrounding area from invading the preset area; sending fire data to an external device, the fire data including fire evolution data and device action sequence data.

[0032] For example, in a specific embodiment, when the battery energy management system (BMS) detects a fire, the central controller immediately executes the fire emergency response protocol: starts the global sprinkling of the fire extinguishing system (response time ≤ 100 ms), synchronously cuts off the DC contactor between the BMS and the PCS; triggers the audible and light alarm system and switches the air conditioning system to the positive pressure smoke prevention mode; extracts the thermal runaway characteristic parameters (including temperature gradient > 5℃ / s, smoke concentration > 15% obs / m and voltage drop record), and transmits the encrypted data packet with millisecond-level timestamp to the central control room in real time through the remote fiber communication module, the data packet containing the fire evolution map and the device action sequence log.

[0033] By using the above control method, the fire sprinkling can be started, the circuit can be disconnected, the alarm can be triggered, the positive pressure smoke prevention can be performed, and the fire related data can be sent to the external device in a timely manner when a fire accident occurs, thereby improving the fire response speed, achieving timely and efficient response to the fire accident, being beneficial to timely control of the fire, reducing the fire loss, and improving the operation safety of the high-voltage direct-hanging energy storage device.

[0034] As a preferred embodiment, the plurality of subsystems include an energy storage converter, a battery energy management system, and an air conditioning system, and the energy management processing method of the high-voltage direct-hanging energy storage device includes: acquiring the junction temperature of the energy storage converter power module and / or the cell temperature of the battery energy management system; controlling the compressor frequency and / or air volume of the air conditioning system, so that the junction temperature of the energy storage converter power module is in a first target temperature range and / or the cell temperature of the battery energy management system is in a second target temperature range. For example, in a specific embodiment, the central controller monitors the energy storage converter (PCS) power module junction temperature and the battery energy management system (BMS) cell temperature distribution in real time, dynamically adjusts the compressor frequency and air volume of the high-voltage direct-hanging energy storage system air conditioner based on the preset temperature gradient threshold (PCS≤85℃, BMS 20-30℃), so that the PCS power device junction temperature is stabilized at 75±5℃, and the BMS cell temperature is maintained at 25±3℃. The optimal working interval. In this way, the power module of the energy storage converter and / or the cell temperature of the battery energy management system can be ensured to be in a suitable temperature range, avoiding overheating and ensuring the working reliability of the energy storage converter and the battery energy management system.

[0035] The central controller aligns the electrical parameters of the energy storage converter (PCS), the health status of the battery management system (BMS), the temperature and flow data of the thermal management water cooling system, the air conditioning working condition information, the fire linkage signal and the alarm fault code with a millisecond level time tag (precision ≤1ms) and data fusion processing, to generate a panoramic monitoring instruction set; transmit to the remote central control room through the optical fiber communication module, and the central control room based on the permission hierarchical mechanism (L1-L3) real-time monitoring equipment running three-dimensional thermal map (refresh rate ≥5Hz), dynamically adjusting the charge and discharge power (range 0-1500kW±1%) and temperature setting value (±0.5℃); when receiving the SIL-3 level alarm of fire / overvoltage, remotely trigger the global spraying of the fire extinguishing system (response ≤100ms) and the sound and light alarm (sound pressure ≥100dB@1m).

[0036] In addition, the energy management processing method of the high-voltage direct-hanging energy storage device of the embodiment of the application further includes: constructing a time stamp fusion database based on the subsystem working data and dry contact on-off signal data after time tag alignment, and using a sliding window algorithm based on the same to perform device health degree evaluation (for example, SOH error ≤3%) and fault pre-diagnosis (for example, accuracy >92%), dynamically generating PCS power instructions, air conditioning frequency conversion signals and fire linkage strategies based on the device health evaluation results and fault diagnosis results (response period ≤10ms), while completing hierarchical verification and strategy feedback of central control room instructions through an encrypted channel, to realize full-link closed-loop control.

[0037] In an optional embodiment, the power conversion system (PCS) is connected through a communication link, real-time acquisition of grid-side AC voltage / current (accuracy ±0.5%), DC bus voltage (range 0-1500VDC) and power module junction temperature (±1℃) parameters, based on the preset peak clipping strategy dynamic control of charge and discharge power (response ≤10ms); through the hard-wired dry contact channel to perform start-stop timing control, emergency stop command, circuit breaker opening and closing and contactor on-off operation, while starting the alarm system, realizing the dual goals of grid load peak shaving and equipment safety interlocking. Through the communication link connection battery energy management system (Battery Management System, BMS), real-time acquisition of battery cluster voltage (±0.1%), single temperature (±0.5℃) and charge and discharge current (±1%), when the temperature gradient >5℃ / s or voltage mutation >10% is monitored, the third level safety interlocking is triggered immediately: the closed state of the normally closed (NC) contact is the equipment running signal, the DC contactor between BMS and PCS is cut off through the hard-wired dry contact, the audible and visual alarm system is activated, the fire global spraying is started, and the thermal runaway is controlled within a single battery cluster through millisecond fault blocking. Through the communication link, the cooling liquid inlet / outlet temperature (±0.5℃ accuracy) and circulation flow (±2% accuracy) of the thermal management water cooling system are obtained in real time, and based on the PID double closed loop algorithm, the frequency of the variable frequency water pump (range 5-100Hz) and the power of the PTC heater (0-20kW) are dynamically adjusted, the junction temperature of the power conversion system power module is controlled in the optimal interval of 75±5℃, and the battery cluster temperature is maintained at 25±3℃; When the temperature gradient >5℃ / s or the flow deviation >15% is detected, the water cooling system redundant pump switching (response ≤100ms) and BMS charging current limitation are triggered immediately to ensure safe operation of the equipment at-30℃ to +50℃ ambient temperature. Through the communication link, the high-voltage direct-hanging energy storage system air conditioner is obtained, the cabinet temperature and humidity distribution (±0.5℃ accuracy), compressor frequency (5-80Hz) and damper opening (0-100%) of the high-voltage direct-hanging energy storage system air conditioner are obtained in real time, and based on the double PID closed loop control algorithm, the compressor frequency (step ±0.5Hz) and the variable frequency fan speed (300-3000rpm) are dynamically adjusted, the power conversion system power module environment temperature is maintained at 40±3℃, and the battery cluster cabin temperature is controlled in the optimal temperature zone of 25±2℃; When the temperature deviation >5℃ or the humidity >80%RH is detected, the anti-condensation mode (warming rate ≥2℃ / min) is automatically started and the thermal management water cooling system compensation control (response ≤10s) is linked, ensuring efficient operation of the equipment in-30℃ to +50℃ extreme environment.Through the hard-wired dry contact (2500V opto-isolation) and the communication link dual-channel, the smoke concentration (precision ±5% obs / m), temperature gradient (±1℃ / s) and spray valve state of the fire protection system are acquired in real time. When the smoke >15% obs / m or the temperature gradient >8℃ / s is detected, the third level fire response (response time ≤200ms) is triggered immediately; the fault battery cluster DC contactor (breaking capacity ≥10kA@1500VDC) is cut off and the grounding protection is activated; the air conditioning is switched to the positive pressure smoke prevention mode (pressure difference ≥50Pa) and the smoke exhaust fan (air volume ≥3000m³ / h) is started; through the multi-level protection mechanism, the thermal runaway is suppressed within a single cluster range (spreading time window >30 minutes), which meets the requirements of UL 9540A thermal runaway propagation test. Through the hard-wired dry contact (2500V opto-isolation) and the communication link dual-channel connection alarm system, the status and fault code of the sound and light alarm are acquired in real time; when the emergency working condition (such as power grid fluctuation >10% or security intrusion) is triggered in the factory area, the central controller immediately executes the SIL-3 level instruction: starts / stops the PCS response time ≤50ms; adjusts the charge and discharge power (range 0-1500kW, precision ±1%); extracts the PCS emergency event log (including DC overvoltage, IGBT overheating code); transmits to the control center through the fiber ring network (time delay ≤4ms); activates the sound and light alarm (sound pressure ≥100dB@1m, red light flashing ≥3Hz); links the fire protection system to enter the pre-spraying mode (valve opening ≤100ms). Through the hard-wired dry contact channel (2500V opto-isolation) and the communication interface dual-redundancy architecture, it can be connected with multiple PCS and BMS, and the expansion subsystem equipment with communication / dry contact is connected; it supports ≥10 sets of PCS and BMS cluster parallel access, and the central controller implements time alignment (precision ±1ms) and sliding window fusion processing (window 5±0.5 seconds) based on the priority arbitration mechanism (period ≤5ms) for multi-source heterogeneous data, synchronously controls the PCS charge and discharge power (range 0-1500kW±1%) and the BMS charge and discharge current (0-1000A±0.5%), the processing capacity is ≥100Mbps, and it supports 1000 nodes / second of real-time refresh rate.The central controller integrates real-time operating parameters such as electrical parameters of the energy storage converter, health status of the battery management system, and thermal management temperature and current data using millisecond-level time-scale alignment (accuracy ≤1ms). These parameters are transmitted to the remote control room via an IEC 62443-3 certified fiber optic module (AES-256 encryption, bandwidth ≥1Gbps). The control room monitors the equipment status in real time based on a three-dimensional thermal map (refresh rate ≥5Hz), dynamically adjusting the charging and discharging power (0-1500kW±1%) and equipment start-up and shutdown sequence (time synchronization error ≤10ms). When a SIL-3 level alarm such as a fire or overvoltage is triggered, the fire protection system immediately activates full-area sprinkler (response ≤100ms, coverage density ≥6L / min·m²) and audible and visual alarms (sound pressure ≥100dB), reducing the risk of fault spread by 90%.

[0038] In addition, such as Figure 2 and Figure 3 As shown, an embodiment of the present invention also provides a high-voltage direct-connected energy storage device, which includes a central controller and a stored program. When the central controller runs the program, it executes the energy management processing method of the high-voltage direct-connected energy storage device described above.

[0039] Specifically, the high-voltage direct-connected energy storage device includes: multiple subsystems and multiple dry contacts; a switch, with the central controller communicating with the switch; a multi-protocol communication module, with the switch and multiple subsystems communicating with the multi-protocol communication module; a dry contact signal acquisition module, with the switch and multiple dry contacts communicating with the dry contact signal acquisition module; and an external communication module, which communicates with the switch and is used to communicate with external devices.

[0040] In this embodiment, the central controller, multi-protocol communication interface module, dry contact signal acquisition module, human-machine interface terminal, and remote fiber optic communication module are interconnected through an industrial-grade gigabit managed switch to form a star topology. The multi-protocol communication module uses industrial bus protocols for data transmission, such as, but not limited to, Modbus TCP, Modbus RTU, CAN, CANopen, and PROFINET protocols. The multi-protocol communication interface module is configured with a protocol adaptive conversion engine, achieving unified access to multiple standards through dynamic loading of the protocol stack. As a preferred embodiment, the energy management processing method for the high-voltage direct-connected energy storage device includes: during the acquisition of working data from multiple subsystems, receiving the working data from multiple subsystems based on a preset priority order. This priority arbitration mechanism ensures real-time communication of important data and guarantees the timeliness of important data acquisition.

[0041] In a specific embodiment, the above-mentioned data acquisition, time alignment and data output operations are performed using a central controller, which communicates using the Modbus TCP protocol, specifically, the central controller acts as a Modbus TCP master station to poll data from each slave station at a period of ≤10 ms, wherein the multi-protocol communication interface module uploads real-time operating parameters of the subsystem, and the dry contact signal acquisition module uploads on-off signal status.

[0042] As an optional embodiment, the external device includes a human-machine interaction terminal and / or a central control room. For example Figure 3 As shown, the human-machine interaction terminal can be a touch screen human-machine interface (HMI) or an industrial all-in-one PC. By setting an external communication module, after time alignment processing of the working data of multiple subsystems and the on-off signal data of multiple dry contacts, the multiple subsystem working data and the multiple dry contact on-off signal data after time alignment processing can be output to the external device through the external communication module. In this embodiment, the external communication module is an optical fiber communication module (for example, a security isolation gateway certified by IEC 62443-3-3). The central controller encapsulates the processed data set into a standardized communication frame and transmits it to the central control room through a remote optical fiber communication module, which can realize real-time monitoring and permission authentication control of the high-voltage direct-hanging energy storage device.

[0043] According to the above embodiments, it can be known that the energy management processing method of the high-voltage direct-hanging energy storage device of the embodiments of the present application at least has the following technical effects: The energy management processing method of the high-voltage direct-hanging energy storage device provided in the embodiments of the present application comprises: acquiring a plurality of subsystem working data and a plurality of dry contact on-off signal data, the plurality of subsystem working data being from a plurality of subsystems, and the plurality of dry contact on-off signal data being from a plurality of dry contacts; performing time stamp alignment processing on the plurality of subsystem working data and the plurality of dry contact on-off signal data, so as to unify the time stamps of the plurality of subsystem working data and the time stamps of the plurality of dry contact on-off signal data to the same time reference; and outputting the plurality of subsystem working data and the plurality of dry contact on-off signal data subjected to the time stamp alignment processing to an external device. By collecting the plurality of subsystem working data and the plurality of dry contact on-off signal data, and performing time stamp alignment processing on the plurality of subsystem working data and the plurality of dry contact on-off signal data, the time stamps of the plurality of subsystem working data and the time stamps of the plurality of dry contact on-off signal data are unified to the same time reference, thereby realizing the unification and availability of multi-source data. The correlation failure problem caused by the inconsistency of time references of different sources is avoided, and finally, a complete data set with time unification is output, thereby providing a reliable data basis for subsequent data analysis, event tracing and state monitoring, so as to facilitate the management of the high-voltage direct-hanging energy storage device, and solve the technical problem of inconvenient management of the high-voltage direct-hanging energy storage device caused by the data islanding of various subsystems in the related art.

[0044] The above-mentioned serial numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments. Moreover, the steps shown in the flowchart of the drawings can be executed in a computer system such as a group of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0045] In the above-mentioned embodiments of the present application, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0046] In the several embodiments provided in the present application, it should be understood that the disclosed technical contents can be implemented by other means. Among them, the device embodiments described above are only schematic, for example, the division of the units can be a logical function division, and in actual implementation, there can be another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed each other can be through some interface, indirect coupling or communication connection between units or modules, which can be electrical or other forms.

[0047] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0048] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0049] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical scheme of the present application or the part of the present application which contributes to the prior art or the whole or part of the technical scheme can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various program code storage media.

[0050] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. An energy management and processing method for a high-voltage direct-connected energy storage device, characterized in that, include: Acquire working data from multiple subsystems and on / off signal data from multiple dry contacts. The working data from multiple subsystems comes from multiple subsystems, and the on / off signal data from multiple dry contacts comes from multiple dry contacts. The working data of the multiple subsystems and the on / off signal data of the multiple dry contacts are time-stamp aligned to unify the timestamps of the working data of the multiple subsystems and the on / off signal data of the multiple dry contacts to the same time base. The time-aligned operating data of the multiple subsystems and the on / off signal data of the multiple dry contacts are output to external devices.

2. The energy management and processing method for high-voltage direct-connected energy storage equipment according to claim 1, characterized in that, The plurality of subsystems includes at least one of the following: energy storage converter, battery energy relationship system, water cooling system, air conditioning system, fire protection system, alarm system; and / or, The external equipment includes a human-computer interaction terminal and / or a central control room.

3. The energy management and processing method for high-voltage direct-connected energy storage equipment according to claim 1, characterized in that, Acquiring multiple subsystem operating data and multiple dry contact on / off signal data includes: repeatedly collecting the subsystem operating data corresponding to each subsystem at a preset time period; and / or, Acquiring multiple subsystem operating data and multiple dry contact on / off signal data includes: acquiring the dry contact on / off signal data corresponding to each dry contact through an opto-isolation circuit.

4. The energy management and processing method for a high-voltage direct-connected energy storage device according to any one of claims 1 to 3, characterized in that, Energy management methods for high-voltage direct-connected energy storage devices also include: Based on the time-aligned working data of the multiple subsystems and the on / off signal data of the multiple dry contacts, control commands are generated using preset logic or machine learning techniques. The subsystem and / or dry contact are controlled according to the control instructions.

5. The energy management and processing method for a high-voltage direct-connected energy storage device according to any one of claims 1 to 3, characterized in that, The energy management and processing method for the high-voltage direct-connected energy storage device includes: If a fault is determined in the dry contact, multiple dry contacts are controlled to execute a preset action sequence, the execution priority of which is higher than that of manual operation commands; The dry contact faults include at least one of the following: open circuit in the signal line, short circuit to ground, or dry contact resistance greater than a preset value.

6. The energy management and processing method for a high-voltage direct-connected energy storage device according to any one of claims 1 to 3, characterized in that, The multiple subsystems include an energy storage converter, a battery energy management system, and an alarm system. In the event that the energy storage converter and / or the battery energy management system is determined to be faulty, the energy management processing method for the high-voltage direct-connected energy storage equipment includes at least one of the following: Control the energy storage converter to shut down and disconnect the DC-side contactor between the energy storage converter and the battery energy management system; The alarm system is controlled to issue a fault alarm signal; The fault data is sent to the external device. The fault data includes the operating data of the high-voltage direct-connected energy storage device within a preset time period before the fault and / or the real-time operating data of the high-voltage direct-connected energy storage device.

7. The energy management and processing method for a high-voltage direct-connected energy storage device according to any one of claims 1 to 3, characterized in that, The multiple subsystems include an energy storage converter, a battery energy management system, a fire protection system, an alarm system, and an air conditioning system. In the event of a fire, the energy management process for the high-voltage direct-connected energy storage equipment includes at least one of the following: Control the fire protection system to start the fire sprinkler system and disconnect the DC side contactor between the energy storage converter and the battery energy management system; Control the alarm system to send a fire alarm signal; Control the air conditioning system to deliver air to a preset area, so that the air pressure in the preset area is higher than that in the surrounding areas, so as to prevent smoke from the surrounding areas from entering the preset area; Fire data is sent to the external device, including fire evolution data and device action sequence data.

8. The energy management and processing method for a high-voltage direct-connected energy storage device according to any one of claims 1 to 3, characterized in that, The multiple subsystems include an energy storage converter, a battery energy management system, and an air conditioning system. The energy management and processing method for the high-voltage direct-connected energy storage equipment includes: Obtain the junction temperature of the energy storage converter power module and / or the cell temperature of the battery energy management system; Control the compressor frequency and / or air volume of the air conditioning system to keep the junction temperature of the energy storage converter power module within a first target temperature range and / or keep the cell temperature of the battery energy management system within a second target temperature range.

9. A high-voltage direct-connected energy storage device, characterized in that, The high-voltage direct-connected energy storage device includes a central controller and a stored program. When the central controller runs the program, it executes the energy management processing method of the high-voltage direct-connected energy storage device according to any one of claims 1 to 8.

10. The high-voltage direct-connected energy storage device according to claim 9, characterized in that, The high-voltage direct-connected energy storage device includes: Multiple subsystems and multiple dry contacts; The central controller is communicatively connected to the switch. A multi-protocol communication module is provided, and the switch and multiple subsystems are all communicatively connected to the multi-protocol communication module. A dry contact signal acquisition module is provided, wherein the switch and the plurality of dry contacts are all communicatively connected to the dry contact signal acquisition module; An external communication module is provided, which is connected to the switch and is used to communicate with external devices.

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